UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



FORM 6-K


REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE MONTH OF JUNE 2024


COMMISSION FILE NUMBER 001-38976

Genmab A/S
(Exact name of Registrant as specified in its charter)

Carl Jacobsens Vej 30

2500 Valby

Denmark

+45 70 20 27 28
(Address of principal executive offices)


Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  Form 40-F 

This report on Form 6-K shall be deemed to be incorporated by reference in Genmab A/S’s registration statements on Form S-8 (File No. 333-232693, 333-253519, 333-262970 and 333-277273) and to be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.


SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

nthony

GENMAB A/S

BY:

/s/ Anthony Pagano

Name: Anthony Pagano

Title: Executive Vice President & Chief Financial Officer

DATE: June 18, 2024


EXHIBIT INDEX

O

Exhibit

Description of Exhibit

99.1

Company Announcement Dated June 18, 2024: Transactions in Connection with Share Buy-back Program

99.1(a)

Appendix Share buyback program – Specification for June 10 – June 14, 2024


Exhibit 99.1

Graphic

Transactions in Connection with Share Buy-back Program

Company Announcement

COPENHAGEN, Denmark; June 18, 2024 – Genmab A/S (Nasdaq: GMAB). On March 15, 2024, Genmab announced the initiation of a share buy-back program to repurchase up to DKK 3.5 billion worth of shares.

The share buy-back program is expected to be completed no later than December 16, 2024.

The following transactions were executed under the program from June 10, 2024, to June 14, 2024:

Trading Platform

No. of shares

Average price (DKK)

Total value (DKK)

Accumulated through

last announcement

1,050,646

 

2,096,961,044.49

June 10, 2024

XCSE

23,011

1,922.68

CEUX

14,098

1,922.98

AQEU

2,253

1,923.82

TQEX

2,049

1,923.69

Total

41,411

1,922.89

79,628,996.56

June 11, 2024

XCSE

21,124

1,899.59

CEUX

12,897

1,901.27

AQEU

1,864

1,901.34

TQEX

2,040

1,900.01

Total

37,925

1,900.27

72,067,773.88

June 12, 2024

XCSE

41,269

1,847.37

CEUX

15,924

1,846.80

AQEU

2,777

1,847.59

TQEX

2,424

1,846.85

Total

62,394

1,847.21

115,254,839.46

June 13, 2024

XCSE

43,221

1,836.45

CEUX

16,725

1,841.09

AQEU

2,860

1,838.18

TQEX

2,491

1,840.61

Total

65,297

1,837.87

120,007,508.39

June 14, 2024

XCSE

42,380

1,831.17

CEUX

16,687

1,828.05

AQEU

2,914

1,831.48

TQEX

2,431

1,822.13

Total

64,412

1,830.04

117,876,227.30

Total

271,439

504,835,345.59

Accumulated under the program

1,322,085

 

2,601,796,390.08

Details of each transaction are included as an appendix to this announcement.

Genmab A/S

Tel: +45 7020 2728

Company Announcement no. 44

Carl Jacobsens Vej 30

Fax: +45 7020 2729

Page 1/2

2500 Valby, Denmark

www.genmab.com

CVR no. 2102 3884

LEI Code 529900MTJPDPE4MHJ122


Graphic

Transactions in Connection with Share Buy-back Program

Following these transactions, Genmab holds 2,171,223 shares as treasury shares, corresponding to 3.28% of the total share capital and voting rights.

The share buy-back program is undertaken in accordance with Regulation (EU) No. 596/2014 (‘MAR’) and the Commission Delegated Regulation (EU) 2016/1052, also referred to as the “Safe Harbour Regulation.” Further details on the terms of the share buy-back program can be found in our company announcement no. 22 dated March 15, 2024.

About Genmab 
Genmab is an international biotechnology company with a core purpose of guiding its unstoppable team to strive toward improving the lives of patients with innovative and differentiated antibody therapeutics. For 25 years, its passionate, innovative and collaborative team has invented next-generation antibody technology platforms and leveraged translational, quantitative and data sciences, resulting in a proprietary pipeline including bispecific T-cell engagers, antibody-drug conjugates, next-generation immune checkpoint modulators and effector function-enhanced antibodies. By 2030, Genmab’s vision is to transform the lives of people with cancer and other serious diseases with knock-your-socks-off (KYSO®) antibody medicines. 

 

Established in 1999, Genmab is headquartered in Copenhagen, Denmark, with international presence across North America, Europe and Asia Pacific. For more information, please visit Genmab.com and follow us on LinkedIn and X.

Contact:
Marisol Peron, Senior Vice President, Global Communications & Corporate Affairs

T: +1 609 524 0065; E: mmp@genmab.com

Andrew Carlsen, Vice President, Head of Investor Relations

T: +45 3377 9558; E: acn@genmab.com


This Company Announcement contains forward looking statements. The words “believe,” “expect,” “anticipate,” “intend” and “plan” and similar expressions identify forward looking statements. Actual results or performance may differ materially from any future results or performance expressed or implied by such statements. The important factors that could cause our actual results or performance to differ materially include, among others, risks associated with preclinical and clinical development of products, uncertainties related to the outcome and conduct of clinical trials including unforeseen safety issues, uncertainties related to product manufacturing, the lack of market acceptance of our products, our inability to manage growth, the competitive environment in relation to our business area and markets, our inability to attract and retain suitably qualified personnel, the unenforceability or lack of protection of our patents and proprietary rights, our relationships with affiliated entities, changes and developments in technology which may render our products or technologies obsolete, and other factors. For a further discussion of these risks, please refer to the risk management sections in Genmab’s most recent financial reports, which are available on www.genmab.com and the risk factors included in Genmab’s most recent Annual Report on Form 20-F and other filings with the U.S. Securities and Exchange Commission (SEC), which are available at www.sec.gov. Genmab does not undertake any obligation to update or revise forward looking statements in this Company Announcement nor to confirm such statements to reflect subsequent events or circumstances after the date made or in relation to actual results, unless required by law.


Genmab A/S and/or its subsidiaries own the following trademarks: Genmab®; the Y-shaped Genmab logo®; Genmab in combination with the Y-shaped Genmab logo®; HuMax®; DuoBody®; HexaBody®; DuoHexaBody®, HexElect® and KYSO®.

Genmab A/S

Tel: +45 7020 2728

Company Announcement no. 44

Carl Jacobsens Vej 30

Fax: +45 7020 2729

Page 2/2

2500 Valby, Denmark

www.genmab.com

CVR no. 2102 3884

LEI Code 529900MTJPDPE4MHJ122


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Issuer

Date

Time CEST

Price (DKK)

Quantity

Venue

Genmab A/S

10/06/2024

9:10:44 AM

1,915.0000

16

AQEU

Genmab A/S

10/06/2024

9:10:44 AM

1,915.0000

10

AQEU

Genmab A/S

10/06/2024

9:10:44 AM

1,915.0000

39

AQEU

Genmab A/S

10/06/2024

9:10:44 AM

1,914.5000

32

XCSE

Genmab A/S

10/06/2024

9:10:44 AM

1,914.5000

34

XCSE

Genmab A/S

10/06/2024

9:18:22 AM

1,922.0000

37

XCSE

Genmab A/S

10/06/2024

9:18:22 AM

1,921.5000

37

XCSE

Genmab A/S

10/06/2024

9:18:22 AM

1,921.5000

38

CEUX

Genmab A/S

10/06/2024

9:19:16 AM

1,920.0000

32

XCSE

Genmab A/S

10/06/2024

9:19:16 AM

1,920.0000

40

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,919.5000

21

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,919.5000

59

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,920.0000

14

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,920.0000

21

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,919.5000

21

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,919.5000

21

XCSE

Genmab A/S

10/06/2024

9:23:17 AM

1,919.5000

10

XCSE

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

23

XCSE

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

38

XCSE

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

21

CEUX

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

3

AQEU

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

5

TQEX

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

37

XCSE

Genmab A/S

10/06/2024

9:25:30 AM

1,916.0000

15

XCSE

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

31

CEUX

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

5

TQEX

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

3

CEUX

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

2

CEUX

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

5

TQEX

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

23

XCSE

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

23

XCSE

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

28

XCSE

Genmab A/S

10/06/2024

9:31:57 AM

1,920.0000

19

CEUX

Genmab A/S

10/06/2024

9:45:24 AM

1,930.5000

8

AQEU

Genmab A/S

10/06/2024

9:45:27 AM

1,930.5000

42

AQEU

Genmab A/S

10/06/2024

9:45:27 AM

1,930.5000

42

AQEU

Genmab A/S

10/06/2024

9:45:27 AM

1,930.5000

42

AQEU

Genmab A/S

10/06/2024

9:45:27 AM

1,930.5000

10

AQEU

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

16

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

9

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

7

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

17

CEUX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

17

CEUX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

7

CEUX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

9

CEUX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

2

AQEU

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

2

AQEU

1


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

2

AQEU

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

5

TQEX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

5

TQEX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

3

TQEX

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

16

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

3

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

3

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

8

AQEU

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

1

AQEU

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

22

XCSE

Genmab A/S

10/06/2024

9:45:31 AM

1,929.5000

34

XCSE

Genmab A/S

10/06/2024

9:48:29 AM

1,930.0000

9

XCSE

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

9

XCSE

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

5

XCSE

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

15

XCSE

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

9

XCSE

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

14

XCSE

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

9:50:07 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

9:50:08 AM

1,931.0000

43

XCSE

Genmab A/S

10/06/2024

9:50:08 AM

1,931.0000

35

XCSE

Genmab A/S

10/06/2024

9:50:08 AM

1,931.0000

43

XCSE

Genmab A/S

10/06/2024

9:50:08 AM

1,931.0000

43

XCSE

Genmab A/S

10/06/2024

9:50:08 AM

1,931.0000

35

XCSE

Genmab A/S

10/06/2024

9:50:08 AM

1,931.0000

11

XCSE

Genmab A/S

10/06/2024

9:50:08 AM

1,930.0000

9

XCSE

Genmab A/S

10/06/2024

9:50:23 AM

1,931.0000

17

CEUX

Genmab A/S

10/06/2024

9:50:23 AM

1,931.0000

3

CEUX

Genmab A/S

10/06/2024

9:50:23 AM

1,931.0000

6

XCSE

Genmab A/S

10/06/2024

9:50:40 AM

1,931.0000

7

XCSE

Genmab A/S

10/06/2024

9:50:44 AM

1,931.0000

6

XCSE

Genmab A/S

10/06/2024

9:50:44 AM

1,931.0000

25

XCSE

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

34

CEUX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

16

CEUX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

7

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

28

CEUX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

44

CEUX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

44

CEUX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

7

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

7

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

7

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

7

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

6

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

6

TQEX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

6

TQEX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

6

TQEX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

6

TQEX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

48

XCSE

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

49

XCSE

2


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

48

XCSE

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

8

AQEU

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

8

TQEX

Genmab A/S

10/06/2024

9:51:24 AM

1,931.0000

3

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

35

CEUX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

6

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

27

CEUX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

7

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

48

XCSE

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

38

XCSE

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

16

CEUX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

27

CEUX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

6

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

6

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

6

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

2

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

7

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

7

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

10

CEUX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

1

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

5

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

1

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

6

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

7

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

1

TQEX

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

14

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

1

AQEU

Genmab A/S

10/06/2024

9:55:30 AM

1,931.0000

1

AQEU

Genmab A/S

10/06/2024

9:58:37 AM

1,931.0000

11

AQEU

Genmab A/S

10/06/2024

9:58:37 AM

1,931.0000

14

TQEX

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

5

XCSE

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

5

XCSE

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

5

XCSE

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

4

CEUX

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

6

CEUX

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

7

CEUX

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

9:59:30 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:00:04 AM

1,931.0000

78

AQEU

Genmab A/S

10/06/2024

10:00:15 AM

1,931.0000

1

AQEU

Genmab A/S

10/06/2024

10:00:15 AM

1,931.0000

10

XCSE

Genmab A/S

10/06/2024

10:01:07 AM

1,931.0000

56

XCSE

Genmab A/S

10/06/2024

10:01:07 AM

1,931.0000

14

XCSE

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

42

XCSE

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

3

XCSE

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

1

XCSE

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

41

XCSE

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

1

XCSE

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

6

XCSE

3


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

10:02:21 AM

1,931.0000

8

XCSE

Genmab A/S

10/06/2024

10:02:24 AM

1,931.0000

35

CEUX

Genmab A/S

10/06/2024

10:02:32 AM

1,930.5000

85

CEUX

Genmab A/S

10/06/2024

10:02:32 AM

1,930.5000

12

AQEU

Genmab A/S

10/06/2024

10:02:32 AM

1,930.5000

13

TQEX

Genmab A/S

10/06/2024

10:02:32 AM

1,930.5000

95

XCSE

Genmab A/S

10/06/2024

10:04:58 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:04:58 AM

1,930.0000

15

CEUX

Genmab A/S

10/06/2024

10:04:58 AM

1,930.0000

1

CEUX

Genmab A/S

10/06/2024

10:04:58 AM

1,930.0000

8

AQEU

Genmab A/S

10/06/2024

10:05:36 AM

1,930.0000

19

XCSE

Genmab A/S

10/06/2024

10:05:36 AM

1,930.0000

47

XCSE

Genmab A/S

10/06/2024

10:06:25 AM

1,930.0000

19

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

1

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

7

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

1

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

16

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

1

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

13

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

4

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

13

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

AQEU

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

1

AQEU

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

3

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

4


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

50

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

18

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

7

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

50

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

18

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

7

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

44

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

35

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

1

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

15

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

7

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

18

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

7

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

18

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

7

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

AQEU

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

AQEU

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

3

TQEX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

AQEU

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

1

AQEU

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

14

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

3

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

17

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

18

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

21

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

82

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

12

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

21

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

2

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

16

XCSE

Genmab A/S

10/06/2024

10:08:27 AM

1,930.0000

32

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

26

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

25

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

26

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

1

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

24

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

23

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

3

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

25

XCSE

5


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

19

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

25

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

1

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

25

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

3

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

23

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

3

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

2

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

23

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

13

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

25

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

17

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

21

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

17

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

21

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

7

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

5

TQEX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

5

TQEX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

14

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

1

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

3

CEUX

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

7

XCSE

Genmab A/S

10/06/2024

10:15:41 AM

1,928.0000

17

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

51

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

45

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

46

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

43

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

7

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

1

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

6

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

7

AQEU

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

1

AQEU

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

1

AQEU

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

7

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

5

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

7

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

5

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

7

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

5

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

1

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

62

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

7

CEUX

6


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

1

AQEU

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

5

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

1

CEUX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

2

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

5

TQEX

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

22

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

22

XCSE

Genmab A/S

10/06/2024

10:20:11 AM

1,928.5000

14

XCSE

Genmab A/S

10/06/2024

10:28:39 AM

1,930.5000

1

XCSE

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

83

XCSE

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

30

XCSE

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

35

CEUX

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

102

CEUX

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

10

CEUX

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

3

CEUX

Genmab A/S

10/06/2024

10:29:21 AM

1,930.5000

20

XCSE

Genmab A/S

10/06/2024

10:31:07 AM

1,930.5000

10

CEUX

Genmab A/S

10/06/2024

10:31:07 AM

1,930.5000

10

CEUX

Genmab A/S

10/06/2024

10:31:07 AM

1,930.5000

11

XCSE

Genmab A/S

10/06/2024

10:32:36 AM

1,930.5000

11

CEUX

Genmab A/S

10/06/2024

10:32:36 AM

1,930.5000

11

XCSE

Genmab A/S

10/06/2024

10:32:36 AM

1,930.5000

1

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

39

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

8

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

36

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

25

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

41

CEUX

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

23

CEUX

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

AQEU

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

AQEU

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

AQEU

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

TQEX

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

TQEX

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

TQEX

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

TQEX

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

6

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

1

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

23

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

14

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

37

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

27

XCSE

Genmab A/S

10/06/2024

10:33:53 AM

1,930.5000

35

XCSE

Genmab A/S

10/06/2024

10:33:56 AM

1,930.5000

7

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,928.5000

68

XCSE

Genmab A/S

10/06/2024

10:36:59 AM

1,928.5000

43

XCSE

7


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

10:36:59 AM

1,928.5000

109

XCSE

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

22

XCSE

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

XCSE

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

57

XCSE

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

143

XCSE

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

7

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

7

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

8

CEUX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

1

AQEU

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

40

AQEU

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

5

TQEX

Genmab A/S

10/06/2024

10:36:59 AM

1,930.0000

38

TQEX

Genmab A/S

10/06/2024

10:44:30 AM

1,928.0000

33

CEUX

Genmab A/S

10/06/2024

10:44:30 AM

1,928.0000

5

TQEX

Genmab A/S

10/06/2024

10:44:30 AM

1,928.0000

16

CEUX

Genmab A/S

10/06/2024

10:44:30 AM

1,928.0000

36

XCSE

Genmab A/S

10/06/2024

10:44:30 AM

1,928.0000

16

XCSE

Genmab A/S

10/06/2024

10:44:33 AM

1,928.0000

79

CEUX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

21

CEUX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

21

CEUX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

3

AQEU

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

6

XCSE

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

16

XCSE

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

22

XCSE

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

7

XCSE

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

6

CEUX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

15

CEUX

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

23

XCSE

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

26

XCSE

Genmab A/S

10/06/2024

10:44:40 AM

1,927.0000

7

XCSE

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

18

CEUX

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

18

CEUX

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

10

CEUX

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

2

AQEU

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

39

AQEU

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

38

TQEX

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

19

CEUX

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

19

CEUX

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

5

CEUX

8


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

39

AQEU

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

38

TQEX

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

18

XCSE

Genmab A/S

10/06/2024

10:45:49 AM

1,925.5000

31

XCSE

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

20

XCSE

Genmab A/S

10/06/2024

10:45:49 AM

1,926.0000

26

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

10

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

17

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

17

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

26

CEUX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

24

CEUX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

4

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

4

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

4

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

4

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

4

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

4

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

17

AQEU

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

2

TQEX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

10

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,918.5000

15

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,918.5000

21

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,918.5000

10

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,918.5000

51

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,918.5000

21

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,918.5000

9

XCSE

Genmab A/S

10/06/2024

10:53:46 AM

1,919.5000

16

CEUX

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

23

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

14

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

12

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

8

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

31

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

1

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

12

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

14

XCSE

Genmab A/S

10/06/2024

10:53:47 AM

1,918.5000

38

XCSE

Genmab A/S

10/06/2024

11:01:29 AM

1,920.5000

10

CEUX

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

18

CEUX

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

64

CEUX

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

1

CEUX

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

2

CEUX

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

1

CEUX

9


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

1

CEUX

Genmab A/S

10/06/2024

11:04:05 AM

1,921.0000

1

CEUX

Genmab A/S

10/06/2024

11:04:16 AM

1,922.0000

13

XCSE

Genmab A/S

10/06/2024

11:04:16 AM

1,922.0000

13

XCSE

Genmab A/S

10/06/2024

11:04:16 AM

1,922.0000

7

XCSE

Genmab A/S

10/06/2024

11:04:22 AM

1,922.0000

7

XCSE

Genmab A/S

10/06/2024

11:04:22 AM

1,922.0000

36

XCSE

Genmab A/S

10/06/2024

11:04:22 AM

1,922.0000

20

XCSE

Genmab A/S

10/06/2024

11:04:46 AM

1,922.0000

7

XCSE

Genmab A/S

10/06/2024

11:04:46 AM

1,922.0000

13

XCSE

Genmab A/S

10/06/2024

11:04:46 AM

1,922.0000

20

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,922.0000

7

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,922.0000

30

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

7

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

32

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

7

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

43

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

43

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

14

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

9

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

34

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

9

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

15

XCSE

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

37

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

2

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

9

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

1

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

29

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

10

CEUX

Genmab A/S

10/06/2024

11:05:15 AM

1,921.0000

16

CEUX

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

41

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

8

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

1

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

32

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

32

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

9

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,920.0000

31

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,919.5000

13

XCSE

Genmab A/S

10/06/2024

11:05:16 AM

1,919.5000

14

XCSE

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

49

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

43

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

6

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

6

CEUX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

30

CEUX

10


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

AQEU

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

AQEU

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

AQEU

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

AQEU

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

TQEX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

TQEX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

AQEU

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

1

AQEU

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

TQEX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

TQEX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

8

TQEX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

3

TQEX

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

57

XCSE

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

32

XCSE

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

25

XCSE

Genmab A/S

10/06/2024

11:10:42 AM

1,919.0000

45

XCSE

Genmab A/S

10/06/2024

11:10:42 AM

1,918.5000

63

XCSE

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

42

CEUX

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

12

CEUX

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

7

TQEX

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

46

XCSE

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

46

XCSE

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

26

XCSE

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

30

CEUX

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

15

CEUX

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

7

TQEX

Genmab A/S

10/06/2024

11:16:28 AM

1,917.0000

36

XCSE

Genmab A/S

10/06/2024

11:21:13 AM

1,915.5000

45

XCSE

Genmab A/S

10/06/2024

11:23:25 AM

1,917.0000

33

CEUX

Genmab A/S

10/06/2024

11:24:09 AM

1,917.0000

7

XCSE

Genmab A/S

10/06/2024

11:24:10 AM

1,917.0000

7

XCSE

Genmab A/S

10/06/2024

11:24:10 AM

1,917.0000

6

XCSE

Genmab A/S

10/06/2024

11:24:10 AM

1,917.0000

7

XCSE

Genmab A/S

10/06/2024

11:24:15 AM

1,917.0000

6

XCSE

Genmab A/S

10/06/2024

11:24:19 AM

1,917.0000

6

XCSE

Genmab A/S

10/06/2024

11:24:19 AM

1,917.0000

17

XCSE

Genmab A/S

10/06/2024

11:24:19 AM

1,917.0000

12

XCSE

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

18

CEUX

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

18

CEUX

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

7

CEUX

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

2

AQEU

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

5

TQEX

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

5

TQEX

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

18

XCSE

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

18

XCSE

Genmab A/S

10/06/2024

11:24:20 AM

1,916.0000

2

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

47

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

7

AQEU

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

7

TQEX

11


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

14

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

31

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

52

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

45

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.5000

20

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

17

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

47

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

TQEX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

12

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

17

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

17

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

17

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

2

AQEU

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

TQEX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

16

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

16

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

15

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

17

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

2

AQEU

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

TQEX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

TQEX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

10

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

3

CEUX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

3

AQEU

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

12

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

TQEX

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

12

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

5

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

7

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

10

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

7

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

14

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

1

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

12

XCSE

Genmab A/S

10/06/2024

11:25:43 AM

1,915.0000

39

XCSE

Genmab A/S

10/06/2024

11:32:27 AM

1,918.5000

18

XCSE

Genmab A/S

10/06/2024

11:32:27 AM

1,918.5000

34

XCSE

Genmab A/S

10/06/2024

11:35:41 AM

1,919.0000

14

AQEU

Genmab A/S

10/06/2024

11:36:26 AM

1,919.0000

15

CEUX

Genmab A/S

10/06/2024

11:36:26 AM

1,919.0000

4

CEUX

Genmab A/S

10/06/2024

11:36:42 AM

1,919.0000

20

XCSE

12


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

11:36:42 AM

1,919.0000

50

XCSE

Genmab A/S

10/06/2024

11:36:42 AM

1,919.0000

38

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.5000

10

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.5000

36

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

19

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

17

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

26

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

26

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

26

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

23

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

1

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

2

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

8

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

3

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

2

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

3

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,920.0000

23

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

2

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

18

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

27

CEUX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

9

CEUX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

20

CEUX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

20

CEUX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

20

CEUX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

17

CEUX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

20

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

15

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

20

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

1

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

6

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

47

XCSE

Genmab A/S

10/06/2024

11:38:25 AM

1,919.5000

19

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

37

CEUX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

37

CEUX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

3

CEUX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

6

AQEU

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

6

TQEX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

6

TQEX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

6

TQEX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

42

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

38

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

2

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

2

XCSE

13


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

14

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

30

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

3

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

30

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

33

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

14

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.0000

2

XCSE

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

25

CEUX

Genmab A/S

10/06/2024

11:42:31 AM

1,919.5000

35

CEUX

Genmab A/S

10/06/2024

11:46:36 AM

1,915.0000

43

XCSE

Genmab A/S

10/06/2024

11:46:36 AM

1,915.0000

42

XCSE

Genmab A/S

10/06/2024

11:46:36 AM

1,915.0000

82

XCSE

Genmab A/S

10/06/2024

11:46:36 AM

1,915.0000

40

XCSE

Genmab A/S

10/06/2024

11:46:36 AM

1,915.0000

38

XCSE

Genmab A/S

10/06/2024

11:53:04 AM

1,911.5000

72

XCSE

Genmab A/S

10/06/2024

11:53:04 AM

1,911.5000

72

XCSE

Genmab A/S

10/06/2024

11:53:04 AM

1,911.5000

2

XCSE

Genmab A/S

10/06/2024

11:57:06 AM

1,913.0000

13

XCSE

Genmab A/S

10/06/2024

11:57:16 AM

1,913.0000

13

XCSE

Genmab A/S

10/06/2024

11:57:16 AM

1,913.0000

7

XCSE

Genmab A/S

10/06/2024

11:57:36 AM

1,913.0000

7

XCSE

Genmab A/S

10/06/2024

11:57:36 AM

1,913.0000

25

XCSE

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

10

CEUX

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

36

CEUX

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

5

CEUX

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

8

AQEU

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

5

TQEX

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

2

TQEX

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

60

XCSE

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

48

XCSE

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

9

XCSE

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

38

XCSE

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

22

XCSE

Genmab A/S

10/06/2024

11:57:43 AM

1,912.0000

6

XCSE

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

43

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

43

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

43

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

6

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

5

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

3

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

1

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

14

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

14

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,918.0000

3

CEUX

Genmab A/S

10/06/2024

12:04:16 PM

1,917.5000

42

XCSE

Genmab A/S

10/06/2024

12:04:16 PM

1,917.5000

6

XCSE

Genmab A/S

10/06/2024

12:05:25 PM

1,917.5000

42

CEUX

Genmab A/S

10/06/2024

12:05:25 PM

1,917.5000

1

CEUX

Genmab A/S

10/06/2024

12:05:25 PM

1,917.5000

7

CEUX

14


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

12:06:18 PM

1,919.5000

15

XCSE

Genmab A/S

10/06/2024

12:06:18 PM

1,919.5000

13

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

18

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

20

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

37

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

18

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

20

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

7

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

7

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

4

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

3

AQEU

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

18

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

20

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

18

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

6

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

14

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

18

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

18

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

7

XCSE

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

12

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

4

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

1

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

15

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

1

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

1

CEUX

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

3

AQEU

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

3

AQEU

Genmab A/S

10/06/2024

12:07:46 PM

1,920.0000

32

XCSE

Genmab A/S

10/06/2024

12:12:48 PM

1,919.0000

32

CEUX

Genmab A/S

10/06/2024

12:12:48 PM

1,919.0000

17

CEUX

Genmab A/S

10/06/2024

12:12:48 PM

1,919.0000

22

CEUX

Genmab A/S

10/06/2024

12:12:58 PM

1,918.5000

49

XCSE

Genmab A/S

10/06/2024

12:12:58 PM

1,918.5000

49

XCSE

Genmab A/S

10/06/2024

12:16:13 PM

1,919.0000

9

CEUX

Genmab A/S

10/06/2024

12:16:13 PM

1,919.0000

16

CEUX

Genmab A/S

10/06/2024

12:16:13 PM

1,919.0000

1

CEUX

Genmab A/S

10/06/2024

12:16:13 PM

1,919.0000

10

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

8

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,918.5000

41

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,918.5000

84

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

14

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

21

XCSE

15


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

21

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

20

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

3

AQEU

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

5

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

8

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,918.5000

70

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

11

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

5

CEUX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

20

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

23

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,918.0000

7

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

47

XCSE

Genmab A/S

10/06/2024

12:18:48 PM

1,917.5000

7

XCSE

Genmab A/S

10/06/2024

12:26:59 PM

1,919.5000

17

CEUX

Genmab A/S

10/06/2024

12:26:59 PM

1,919.5000

1

TQEX

Genmab A/S

10/06/2024

12:26:59 PM

1,919.5000

21

XCSE

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

2

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

16

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

8

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

9

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

8

CEUX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

2

AQEU

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

1

AQEU

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

5

TQEX

16


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

5

TQEX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

5

TQEX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

5

TQEX

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

12

XCSE

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

6

XCSE

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

6

XCSE

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

3

XCSE

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

12

XCSE

Genmab A/S

10/06/2024

12:30:21 PM

1,920.0000

15

CEUX

Genmab A/S

10/06/2024

12:31:27 PM

1,920.0000

32

XCSE

Genmab A/S

10/06/2024

12:32:06 PM

1,920.0000

2

XCSE

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

22

XCSE

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

22

XCSE

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

22

XCSE

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

20

CEUX

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

14

CEUX

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

6

XCSE

Genmab A/S

10/06/2024

12:33:21 PM

1,921.5000

16

XCSE

Genmab A/S

10/06/2024

12:33:33 PM

1,922.5000

7

XCSE

Genmab A/S

10/06/2024

12:33:33 PM

1,922.5000

21

XCSE

Genmab A/S

10/06/2024

12:33:55 PM

1,922.5000

23

XCSE

Genmab A/S

10/06/2024

12:33:55 PM

1,922.5000

8

XCSE

Genmab A/S

10/06/2024

12:33:55 PM

1,922.5000

14

XCSE

Genmab A/S

10/06/2024

12:33:55 PM

1,922.5000

8

XCSE

Genmab A/S

10/06/2024

12:33:55 PM

1,922.5000

22

XCSE

Genmab A/S

10/06/2024

12:33:55 PM

1,922.5000

22

XCSE

Genmab A/S

10/06/2024

12:33:59 PM

1,923.0000

6

XCSE

Genmab A/S

10/06/2024

12:33:59 PM

1,923.0000

8

XCSE

Genmab A/S

10/06/2024

12:33:59 PM

1,923.0000

6

XCSE

Genmab A/S

10/06/2024

12:34:00 PM

1,923.0000

7

XCSE

Genmab A/S

10/06/2024

12:34:00 PM

1,923.0000

7

XCSE

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

33

XCSE

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

33

XCSE

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

13

XCSE

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

4

CEUX

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

11

CEUX

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

15

CEUX

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

8

CEUX

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

22

CEUX

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

7

CEUX

Genmab A/S

10/06/2024

12:34:08 PM

1,922.5000

4

XCSE

Genmab A/S

10/06/2024

12:34:58 PM

1,923.5000

23

XCSE

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

4

CEUX

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

10

AQEU

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

11

TQEX

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

10

XCSE

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

24

XCSE

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

8

XCSE

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

5

XCSE

17


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

12:36:54 PM

1,925.5000

6

XCSE

Genmab A/S

10/06/2024

12:37:15 PM

1,926.0000

36

CEUX

Genmab A/S

10/06/2024

12:37:15 PM

1,926.0000

2

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

7

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

90

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

5

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

5

TQEX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

5

TQEX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

5

TQEX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

21

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

17

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

17

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,925.0000

2

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.5000

40

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

7

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

3

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

7

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

2

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

2

AQEU

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

5

TQEX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

15

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

1

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

16

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

14

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

2

AQEU

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

5

TQEX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

4

XCSE

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

36

CEUX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

8

AQEU

18


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

8

TQEX

Genmab A/S

10/06/2024

12:37:30 PM

1,924.0000

17

CEUX

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

15

XCSE

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

12

XCSE

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

22

XCSE

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

12

XCSE

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

34

XCSE

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

10

XCSE

Genmab A/S

10/06/2024

12:39:37 PM

1,919.0000

11

XCSE

Genmab A/S

10/06/2024

12:45:21 PM

1,917.0000

43

XCSE

Genmab A/S

10/06/2024

12:45:21 PM

1,917.0000

8

XCSE

Genmab A/S

10/06/2024

12:48:27 PM

1,921.0000

66

XCSE

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

56

CEUX

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

9

TQEX

Genmab A/S

10/06/2024

12:48:27 PM

1,921.0000

59

CEUX

Genmab A/S

10/06/2024

12:48:27 PM

1,921.0000

9

AQEU

Genmab A/S

10/06/2024

12:48:27 PM

1,921.0000

9

TQEX

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

50

XCSE

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

13

XCSE

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

1

AQEU

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

1

TQEX

Genmab A/S

10/06/2024

12:48:27 PM

1,920.5000

6

TQEX

Genmab A/S

10/06/2024

12:48:27 PM

1,920.0000

48

CEUX

Genmab A/S

10/06/2024

12:53:16 PM

1,921.0000

7

XCSE

Genmab A/S

10/06/2024

12:53:16 PM

1,921.0000

23

XCSE

Genmab A/S

10/06/2024

12:53:41 PM

1,921.0000

10

CEUX

Genmab A/S

10/06/2024

12:53:41 PM

1,921.0000

3

CEUX

Genmab A/S

10/06/2024

12:53:41 PM

1,921.0000

10

TQEX

Genmab A/S

10/06/2024

12:53:41 PM

1,921.0000

7

XCSE

Genmab A/S

10/06/2024

12:53:41 PM

1,921.0000

9

XCSE

Genmab A/S

10/06/2024

12:54:24 PM

1,921.0000

6

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

30

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

28

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

30

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

22

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

30

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

13

XCSE

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

28

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

25

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

28

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

20

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

6

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

9

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

13

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

10

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

20

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

1

CEUX

Genmab A/S

10/06/2024

12:56:10 PM

1,921.5000

41

XCSE

19


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

12:57:41 PM

1,921.5000

4

XCSE

Genmab A/S

10/06/2024

12:57:41 PM

1,921.5000

68

XCSE

Genmab A/S

10/06/2024

12:57:41 PM

1,921.5000

8

CEUX

Genmab A/S

10/06/2024

12:57:41 PM

1,921.5000

57

CEUX

Genmab A/S

10/06/2024

12:57:41 PM

1,921.5000

10

AQEU

Genmab A/S

10/06/2024

12:57:41 PM

1,921.5000

10

TQEX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

22

CEUX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

16

CEUX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

6

CEUX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

24

XCSE

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

24

XCSE

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

22

CEUX

Genmab A/S

10/06/2024

1:00:20 PM

1,922.0000

6

CEUX

Genmab A/S

10/06/2024

1:00:20 PM

1,921.5000

40

XCSE

Genmab A/S

10/06/2024

1:00:20 PM

1,921.5000

40

XCSE

Genmab A/S

10/06/2024

1:00:20 PM

1,921.5000

40

XCSE

Genmab A/S

10/06/2024

1:00:20 PM

1,921.5000

6

XCSE

Genmab A/S

10/06/2024

1:07:14 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

1:07:14 PM

1,923.5000

23

XCSE

Genmab A/S

10/06/2024

1:07:14 PM

1,923.5000

23

XCSE

Genmab A/S

10/06/2024

1:07:14 PM

1,923.5000

23

XCSE

Genmab A/S

10/06/2024

1:07:14 PM

1,923.5000

20

XCSE

Genmab A/S

10/06/2024

1:07:15 PM

1,923.0000

41

XCSE

Genmab A/S

10/06/2024

1:07:15 PM

1,923.0000

41

XCSE

Genmab A/S

10/06/2024

1:07:15 PM

1,923.0000

17

XCSE

Genmab A/S

10/06/2024

1:09:19 PM

1,923.0000

38

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,923.0000

38

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.5000

72

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.5000

16

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.5000

22

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

23

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

23

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

23

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

23

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

20

XCSE

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

21

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

21

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

12

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

21

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

21

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

6

CEUX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

3

AQEU

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

5

TQEX

20


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

8

AQEU

Genmab A/S

10/06/2024

1:10:06 PM

1,922.0000

48

AQEU

Genmab A/S

10/06/2024

1:10:07 PM

1,921.0000

52

XCSE

Genmab A/S

10/06/2024

1:10:08 PM

1,921.0000

52

XCSE

Genmab A/S

10/06/2024

1:17:45 PM

1,923.0000

25

XCSE

Genmab A/S

10/06/2024

1:17:45 PM

1,923.0000

60

XCSE

Genmab A/S

10/06/2024

1:19:52 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:23:39 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:23:39 PM

1,923.5000

1

XCSE

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

9

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

9

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

7

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

9

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

6

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

5

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:25:41 PM

1,923.5000

7

XCSE

Genmab A/S

10/06/2024

1:25:41 PM

1,923.0000

6

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.0000

12

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.0000

2

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.0000

18

CEUX

Genmab A/S

10/06/2024

1:25:41 PM

1,923.0000

2

AQEU

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

20

CEUX

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

7

CEUX

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

2

AQEU

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

2

AQEU

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

2

AQEU

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

5

TQEX

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

5

TQEX

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

5

TQEX

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

20

XCSE

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

20

XCSE

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

20

XCSE

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

47

XCSE

Genmab A/S

10/06/2024

1:25:42 PM

1,923.0000

25

XCSE

Genmab A/S

10/06/2024

1:25:42 PM

1,923.5000

28

XCSE

Genmab A/S

10/06/2024

1:26:14 PM

1,923.5000

12

TQEX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

4

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

48

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

5

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

4

XCSE

21


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

52

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

16

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

5

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

66

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

19

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

9

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

4

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

5

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

35

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

2

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

10

CEUX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

10

CEUX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

4

CEUX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

10

CEUX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

7

XCSE

Genmab A/S

10/06/2024

1:29:04 PM

1,923.5000

2

XCSE

Genmab A/S

10/06/2024

1:30:02 PM

1,924.0000

9

CEUX

Genmab A/S

10/06/2024

1:30:02 PM

1,924.0000

14

TQEX

Genmab A/S

10/06/2024

1:30:02 PM

1,924.0000

11

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.0000

28

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.0000

5

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.0000

30

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

30

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

8

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

4

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

20

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.5000

15

XCSE

Genmab A/S

10/06/2024

1:31:47 PM

1,923.0000

58

CEUX

Genmab A/S

10/06/2024

1:31:47 PM

1,923.0000

8

AQEU

Genmab A/S

10/06/2024

1:31:47 PM

1,923.0000

9

TQEX

Genmab A/S

10/06/2024

1:33:11 PM

1,922.5000

32

XCSE

Genmab A/S

10/06/2024

1:33:11 PM

1,922.5000

5

TQEX

Genmab A/S

10/06/2024

1:35:28 PM

1,924.0000

3

AQEU

Genmab A/S

10/06/2024

1:35:39 PM

1,925.0000

1

TQEX

Genmab A/S

10/06/2024

1:35:39 PM

1,925.0000

9

XCSE

Genmab A/S

10/06/2024

1:35:39 PM

1,925.0000

14

XCSE

Genmab A/S

10/06/2024

1:36:25 PM

1,924.5000

27

XCSE

Genmab A/S

10/06/2024

1:36:25 PM

1,924.5000

64

XCSE

Genmab A/S

10/06/2024

1:36:46 PM

1,925.0000

33

XCSE

Genmab A/S

10/06/2024

1:36:46 PM

1,925.0000

6

XCSE

Genmab A/S

10/06/2024

1:38:12 PM

1,926.0000

25

XCSE

22


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

1:38:38 PM

1,926.0000

2

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

15

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

18

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

25

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

25

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

8

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

10

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

8

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

31

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

31

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

29

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

7

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

4

TQEX

23


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

3

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

3

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

2

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

12

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

20

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

2

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,926.0000

18

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

22

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

10

XCSE

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

20

CEUX

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

3

AQEU

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

1:40:46 PM

1,925.5000

12

XCSE

Genmab A/S

10/06/2024

1:45:56 PM

1,924.5000

10

AQEU

Genmab A/S

10/06/2024

1:45:56 PM

1,924.5000

7

AQEU

Genmab A/S

10/06/2024

1:45:56 PM

1,924.5000

10

TQEX

Genmab A/S

10/06/2024

1:45:56 PM

1,924.5000

9

TQEX

Genmab A/S

10/06/2024

1:46:07 PM

1,923.5000

22

XCSE

Genmab A/S

10/06/2024

1:46:32 PM

1,923.5000

35

XCSE

Genmab A/S

10/06/2024

1:47:13 PM

1,924.5000

13

CEUX

Genmab A/S

10/06/2024

1:47:13 PM

1,924.5000

8

CEUX

Genmab A/S

10/06/2024

1:47:13 PM

1,924.5000

9

CEUX

Genmab A/S

10/06/2024

1:47:13 PM

1,924.5000

4

CEUX

Genmab A/S

10/06/2024

1:47:13 PM

1,924.5000

1

CEUX

Genmab A/S

10/06/2024

1:47:13 PM

1,924.5000

3

AQEU

Genmab A/S

10/06/2024

1:47:24 PM

1,924.0000

37

XCSE

Genmab A/S

10/06/2024

1:47:24 PM

1,924.0000

28

XCSE

Genmab A/S

10/06/2024

1:49:19 PM

1,927.5000

70

XCSE

Genmab A/S

10/06/2024

1:49:40 PM

1,927.5000

10

XCSE

Genmab A/S

10/06/2024

1:49:40 PM

1,927.5000

23

XCSE

Genmab A/S

10/06/2024

1:50:13 PM

1,929.0000

40

CEUX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

31

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

9

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

9

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

37

CEUX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

37

CEUX

24


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

11

CEUX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

15

CEUX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

4

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

2

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

6

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

2

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

6

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

6

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

31

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

10

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

11

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

8

XCSE

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

6

TQEX

Genmab A/S

10/06/2024

1:50:19 PM

1,928.5000

11

CEUX

Genmab A/S

10/06/2024

1:53:55 PM

1,928.0000

5

TQEX

Genmab A/S

10/06/2024

1:53:55 PM

1,928.0000

22

XCSE

Genmab A/S

10/06/2024

1:54:30 PM

1,928.5000

4

CEUX

Genmab A/S

10/06/2024

1:54:30 PM

1,928.5000

1

AQEU

Genmab A/S

10/06/2024

1:54:30 PM

1,928.5000

34

AQEU

Genmab A/S

10/06/2024

1:54:41 PM

1,928.0000

6

XCSE

Genmab A/S

10/06/2024

1:54:41 PM

1,928.0000

16

XCSE

Genmab A/S

10/06/2024

1:54:41 PM

1,928.0000

21

CEUX

Genmab A/S

10/06/2024

1:54:41 PM

1,928.0000

5

TQEX

Genmab A/S

10/06/2024

1:54:59 PM

1,928.0000

8

XCSE

Genmab A/S

10/06/2024

1:55:33 PM

1,928.0000

14

XCSE

Genmab A/S

10/06/2024

1:55:33 PM

1,928.0000

13

XCSE

Genmab A/S

10/06/2024

1:55:33 PM

1,928.0000

3

TQEX

Genmab A/S

10/06/2024

1:56:12 PM

1,929.0000

11

CEUX

Genmab A/S

10/06/2024

1:56:12 PM

1,929.0000

3

CEUX

Genmab A/S

10/06/2024

1:56:54 PM

1,929.0000

4

AQEU

Genmab A/S

10/06/2024

1:56:54 PM

1,929.0000

1

AQEU

Genmab A/S

10/06/2024

2:00:18 PM

1,927.0000

2

XCSE

Genmab A/S

10/06/2024

2:00:19 PM

1,927.0000

28

XCSE

Genmab A/S

10/06/2024

2:00:19 PM

1,927.0000

18

XCSE

Genmab A/S

10/06/2024

2:00:19 PM

1,927.0000

5

XCSE

Genmab A/S

10/06/2024

2:00:19 PM

1,927.0000

43

XCSE

Genmab A/S

10/06/2024

2:04:02 PM

1,926.5000

29

XCSE

Genmab A/S

10/06/2024

2:04:02 PM

1,926.5000

19

XCSE

Genmab A/S

10/06/2024

2:04:02 PM

1,926.5000

29

XCSE

Genmab A/S

10/06/2024

2:04:02 PM

1,926.5000

29

XCSE

Genmab A/S

10/06/2024

2:04:02 PM

1,926.5000

29

XCSE

Genmab A/S

10/06/2024

2:04:02 PM

1,926.5000

12

XCSE

Genmab A/S

10/06/2024

2:04:27 PM

1,925.5000

2

XCSE

Genmab A/S

10/06/2024

2:04:27 PM

1,925.5000

47

XCSE

Genmab A/S

10/06/2024

2:12:56 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

2:12:57 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

21

XCSE

25


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

2

XCSE

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

17

XCSE

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

2

XCSE

Genmab A/S

10/06/2024

2:13:04 PM

1,926.5000

21

XCSE

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

24

CEUX

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

2

AQEU

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

4

AQEU

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

21

XCSE

Genmab A/S

10/06/2024

2:13:14 PM

1,926.5000

25

XCSE

Genmab A/S

10/06/2024

2:15:10 PM

1,927.0000

14

CEUX

Genmab A/S

10/06/2024

2:15:10 PM

1,927.5000

13

TQEX

Genmab A/S

10/06/2024

2:15:10 PM

1,927.5000

1

TQEX

Genmab A/S

10/06/2024

2:15:10 PM

1,927.5000

9

XCSE

Genmab A/S

10/06/2024

2:15:10 PM

1,927.5000

23

XCSE

Genmab A/S

10/06/2024

2:15:10 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:15:10 PM

1,927.5000

8

XCSE

Genmab A/S

10/06/2024

2:15:11 PM

1,927.5000

6

XCSE

Genmab A/S

10/06/2024

2:15:11 PM

1,927.5000

6

XCSE

Genmab A/S

10/06/2024

2:15:11 PM

1,927.5000

6

XCSE

Genmab A/S

10/06/2024

2:15:11 PM

1,927.5000

23

XCSE

Genmab A/S

10/06/2024

2:15:12 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:15:12 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:15:12 PM

1,927.5000

23

XCSE

Genmab A/S

10/06/2024

2:15:12 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:15:12 PM

1,927.5000

23

XCSE

Genmab A/S

10/06/2024

2:15:12 PM

1,927.5000

6

XCSE

Genmab A/S

10/06/2024

2:15:13 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:15:13 PM

1,927.5000

9

XCSE

Genmab A/S

10/06/2024

2:15:13 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

21

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

21

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

4

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

4

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

13

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

4

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

15

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

2

AQEU

26


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

21

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

21

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

13

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

21

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

21

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.5000

16

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

21

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

14

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

7

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

14

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

21

XCSE

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

21

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

11

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

5

CEUX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

13

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

2

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

4

AQEU

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

17

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

5

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

1

TQEX

Genmab A/S

10/06/2024

2:15:21 PM

1,926.0000

11

XCSE

Genmab A/S

10/06/2024

2:22:51 PM

1,925.5000

3

AQEU

Genmab A/S

10/06/2024

2:22:51 PM

1,925.5000

1

AQEU

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

72

XCSE

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

7

XCSE

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

7

XCSE

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

8

CEUX

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

8

CEUX

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

8

CEUX

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

8

CEUX

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

7

CEUX

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

2

TQEX

Genmab A/S

10/06/2024

2:24:04 PM

1,925.5000

8

CEUX

Genmab A/S

10/06/2024

2:24:51 PM

1,925.5000

15

CEUX

Genmab A/S

10/06/2024

2:24:51 PM

1,925.5000

4

CEUX

Genmab A/S

10/06/2024

2:24:51 PM

1,925.5000

11

XCSE

27


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:24:51 PM

1,925.5000

23

XCSE

Genmab A/S

10/06/2024

2:24:51 PM

1,925.5000

7

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

14

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

9

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

3

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

9

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

25

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

14

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

11

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

10

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

11

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

4

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

4

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

35

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

23

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

13

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

35

XCSE

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

36

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

4

CEUX

Genmab A/S

10/06/2024

2:26:45 PM

1,927.5000

10

XCSE

Genmab A/S

10/06/2024

2:28:55 PM

1,927.5000

15

CEUX

Genmab A/S

10/06/2024

2:28:55 PM

1,927.5000

4

CEUX

Genmab A/S

10/06/2024

2:28:55 PM

1,927.5000

1

XCSE

Genmab A/S

10/06/2024

2:28:55 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:28:55 PM

1,927.5000

9

XCSE

Genmab A/S

10/06/2024

2:29:23 PM

1,927.5000

11

CEUX

Genmab A/S

10/06/2024

2:29:23 PM

1,927.5000

4

CEUX

Genmab A/S

10/06/2024

2:29:23 PM

1,927.5000

20

XCSE

Genmab A/S

10/06/2024

2:29:23 PM

1,927.5000

3

XCSE

Genmab A/S

10/06/2024

2:30:02 PM

1,927.5000

12

CEUX

Genmab A/S

10/06/2024

2:30:02 PM

1,927.5000

2

TQEX

Genmab A/S

10/06/2024

2:30:02 PM

1,927.5000

7

XCSE

Genmab A/S

10/06/2024

2:30:02 PM

1,927.5000

17

XCSE

Genmab A/S

10/06/2024

2:30:30 PM

1,927.5000

19

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

3

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

20

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

9

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

17

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

1

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

3

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

CEUX

28


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

6

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

3

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

3

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

8

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

12

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:31:41 PM

1,926.5000

15

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,926.5000

3

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,926.5000

1

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,926.5000

3

XCSE

Genmab A/S

10/06/2024

2:31:41 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

2:34:09 PM

1,926.5000

2

XCSE

Genmab A/S

10/06/2024

2:34:48 PM

1,927.5000

11

AQEU

Genmab A/S

10/06/2024

2:34:48 PM

1,927.5000

1

AQEU

Genmab A/S

10/06/2024

2:34:48 PM

1,927.5000

38

XCSE

Genmab A/S

10/06/2024

2:35:12 PM

1,927.5000

8

AQEU

Genmab A/S

10/06/2024

2:35:12 PM

1,927.5000

30

XCSE

Genmab A/S

10/06/2024

2:35:22 PM

1,927.5000

11

CEUX

Genmab A/S

10/06/2024

2:35:22 PM

1,927.5000

27

CEUX

Genmab A/S

10/06/2024

2:35:48 PM

1,927.5000

3

CEUX

Genmab A/S

10/06/2024

2:35:48 PM

1,927.5000

1

CEUX

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

48

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

48

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

20

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

20

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

20

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

8

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

12

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

10

XCSE

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

24

CEUX

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

14

CEUX

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

43

CEUX

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

43

CEUX

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

50

CEUX

Genmab A/S

10/06/2024

2:36:22 PM

1,927.5000

11

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

7

TQEX

29


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

XCSE

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

XCSE

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

XCSE

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

CEUX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

2

AQEU

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

1

TQEX

Genmab A/S

10/06/2024

2:36:24 PM

1,927.0000

18

XCSE

Genmab A/S

10/06/2024

2:40:44 PM

1,925.5000

3

XCSE

Genmab A/S

10/06/2024

2:40:44 PM

1,925.5000

6

XCSE

Genmab A/S

10/06/2024

2:40:44 PM

1,925.5000

44

XCSE

Genmab A/S

10/06/2024

2:40:44 PM

1,925.5000

53

XCSE

Genmab A/S

10/06/2024

2:40:44 PM

1,925.5000

49

XCSE

Genmab A/S

10/06/2024

2:40:44 PM

1,925.5000

7

CEUX

Genmab A/S

10/06/2024

2:41:21 PM

1,925.5000

18

XCSE

Genmab A/S

10/06/2024

2:42:46 PM

1,925.5000

15

XCSE

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

24

XCSE

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

17

XCSE

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

50

CEUX

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

8

AQEU

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

1

AQEU

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

8

AQEU

Genmab A/S

10/06/2024

2:42:51 PM

1,925.5000

7

TQEX

Genmab A/S

10/06/2024

2:46:07 PM

1,927.5000

34

XCSE

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

97

XCSE

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

8

XCSE

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

44

XCSE

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

13

AQEU

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

1

AQEU

30


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

40

AQEU

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

13

TQEX

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

38

CEUX

Genmab A/S

10/06/2024

2:46:07 PM

1,927.0000

48

CEUX

Genmab A/S

10/06/2024

2:47:27 PM

1,925.5000

15

CEUX

Genmab A/S

10/06/2024

2:49:53 PM

1,927.0000

1

AQEU

Genmab A/S

10/06/2024

2:49:53 PM

1,927.0000

13

AQEU

Genmab A/S

10/06/2024

2:49:53 PM

1,927.0000

9

XCSE

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

66

XCSE

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

23

XCSE

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

31

XCSE

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

36

CEUX

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

8

AQEU

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

1

AQEU

Genmab A/S

10/06/2024

2:53:13 PM

1,927.0000

7

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

34

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

34

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

11

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

34

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

11

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

34

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

11

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

27

CEUX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

1

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

45

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

38

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

1

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

44

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

38

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

1

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

17

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

38

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

27

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

38

XCSE

31


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

38

XCSE

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

8

AQEU

Genmab A/S

10/06/2024

2:54:04 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

78

CEUX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

75

CEUX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

11

AQEU

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

11

AQEU

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

12

TQEX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

12

TQEX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

68

XCSE

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

18

XCSE

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

10

CEUX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

4

CEUX

Genmab A/S

10/06/2024

2:57:44 PM

1,926.0000

38

XCSE

Genmab A/S

10/06/2024

3:03:03 PM

1,926.5000

13

CEUX

Genmab A/S

10/06/2024

3:03:03 PM

1,926.5000

21

CEUX

Genmab A/S

10/06/2024

3:03:34 PM

1,926.5000

22

CEUX

Genmab A/S

10/06/2024

3:03:34 PM

1,926.5000

10

TQEX

Genmab A/S

10/06/2024

3:03:34 PM

1,926.5000

2

TQEX

Genmab A/S

10/06/2024

3:03:49 PM

1,926.5000

3

CEUX

Genmab A/S

10/06/2024

3:03:49 PM

1,926.5000

27

AQEU

Genmab A/S

10/06/2024

3:03:49 PM

1,926.5000

7

AQEU

Genmab A/S

10/06/2024

3:03:49 PM

1,926.5000

1

AQEU

Genmab A/S

10/06/2024

3:04:31 PM

1,927.0000

15

CEUX

Genmab A/S

10/06/2024

3:05:44 PM

1,927.0000

34

XCSE

Genmab A/S

10/06/2024

3:05:44 PM

1,927.0000

53

XCSE

Genmab A/S

10/06/2024

3:05:44 PM

1,927.0000

23

CEUX

Genmab A/S

10/06/2024

3:05:44 PM

1,927.0000

25

CEUX

Genmab A/S

10/06/2024

3:05:44 PM

1,927.0000

14

CEUX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

28

XCSE

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

66

XCSE

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

69

XCSE

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

27

CEUX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

27

CEUX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

5

CEUX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

4

AQEU

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

5

TQEX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

49

CEUX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

5

CEUX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

7

AQEU

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

8

TQEX

Genmab A/S

10/06/2024

3:07:16 PM

1,927.0000

5

AQEU

Genmab A/S

10/06/2024

3:09:50 PM

1,926.5000

41

CEUX

Genmab A/S

10/06/2024

3:09:50 PM

1,926.5000

56

CEUX

Genmab A/S

10/06/2024

3:09:50 PM

1,926.5000

44

XCSE

Genmab A/S

10/06/2024

3:09:50 PM

1,926.5000

57

XCSE

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

36

CEUX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

7

CEUX

32


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

9

AQEU

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

16

AQEU

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

10

TQEX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

1

TQEX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

16

CEUX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

9

AQEU

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

10

TQEX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

4

TQEX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

52

XCSE

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

18

XCSE

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

70

XCSE

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

17

XCSE

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

4

CEUX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

16

CEUX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

15

CEUX

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

7

AQEU

Genmab A/S

10/06/2024

3:11:13 PM

1,926.5000

10

TQEX

Genmab A/S

10/06/2024

3:11:15 PM

1,926.5000

50

XCSE

Genmab A/S

10/06/2024

3:11:15 PM

1,926.5000

7

XCSE

Genmab A/S

10/06/2024

3:11:15 PM

1,926.0000

129

XCSE

Genmab A/S

10/06/2024

3:11:15 PM

1,926.0000

38

XCSE

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

21

XCSE

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

7

XCSE

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

20

CEUX

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

7

CEUX

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

2

AQEU

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

1

AQEU

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

5

TQEX

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

5

TQEX

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

2

AQEU

Genmab A/S

10/06/2024

3:18:32 PM

1,925.0000

1

AQEU

Genmab A/S

10/06/2024

3:19:35 PM

1,925.5000

41

XCSE

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

41

XCSE

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

36

XCSE

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

16

XCSE

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

37

CEUX

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

22

CEUX

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

6

AQEU

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

1

AQEU

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

1

TQEX

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

2

TQEX

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

36

XCSE

Genmab A/S

10/06/2024

3:20:07 PM

1,925.5000

27

XCSE

Genmab A/S

10/06/2024

3:21:29 PM

1,925.0000

65

XCSE

Genmab A/S

10/06/2024

3:21:29 PM

1,925.0000

83

XCSE

Genmab A/S

10/06/2024

3:21:29 PM

1,925.0000

50

CEUX

Genmab A/S

10/06/2024

3:21:29 PM

1,925.0000

26

CEUX

33


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:21:29 PM

1,925.0000

11

AQEU

Genmab A/S

10/06/2024

3:21:29 PM

1,925.0000

11

TQEX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

2

AQEU

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

1

AQEU

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

20

XCSE

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

19

XCSE

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

20

CEUX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

18

CEUX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

18

CEUX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

5

TQEX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

5

TQEX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

5

TQEX

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

20

XCSE

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

19

XCSE

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

10

XCSE

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

13

XCSE

Genmab A/S

10/06/2024

3:21:30 PM

1,924.5000

23

XCSE

Genmab A/S

10/06/2024

3:28:08 PM

1,926.5000

15

CEUX

Genmab A/S

10/06/2024

3:28:08 PM

1,926.5000

4

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

44

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

20

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

22

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

2

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

19

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

2

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

28

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

13

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

6

AQEU

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

6

AQEU

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

41

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

13

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

1

TQEX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

5

TQEX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

1

TQEX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

6

TQEX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

28

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

22

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

6

CEUX

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

42

XCSE

Genmab A/S

10/06/2024

3:28:11 PM

1,926.5000

25

XCSE

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

17

CEUX

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

4

CEUX

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

13

CEUX

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

4

CEUX

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

17

XCSE

Genmab A/S

10/06/2024

3:29:09 PM

1,925.5000

8

XCSE

Genmab A/S

10/06/2024

3:29:10 PM

1,925.5000

17

XCSE

Genmab A/S

10/06/2024

3:29:10 PM

1,925.5000

17

CEUX

34


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:29:20 PM

1,925.5000

17

CEUX

Genmab A/S

10/06/2024

3:29:20 PM

1,925.5000

2

AQEU

Genmab A/S

10/06/2024

3:29:20 PM

1,925.5000

5

TQEX

Genmab A/S

10/06/2024

3:29:20 PM

1,925.5000

17

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

29

AQEU

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

9

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

40

AQEU

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

21

TQEX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

5

TQEX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

5

TQEX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

5

TQEX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

5

TQEX

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

17

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

5

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

14

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

57

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

16

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

5

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

12

CEUX

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

29

AQEU

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:01 PM

1,924.0000

2

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

1

XCSE

Genmab A/S

10/06/2024

3:30:01 PM

1,923.5000

2

CEUX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

17

XCSE

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

6

XCSE

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

15

CEUX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

15

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

CEUX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

15

CEUX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

6

CEUX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

35


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

2

AQEU

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

5

TQEX

Genmab A/S

10/06/2024

3:30:02 PM

1,923.5000

28

CEUX

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

34

CEUX

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

27

CEUX

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

5

AQEU

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

13

AQEU

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

5

TQEX

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

6

TQEX

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

37

XCSE

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

30

XCSE

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

41

TQEX

Genmab A/S

10/06/2024

3:36:12 PM

1,919.5000

14

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

21

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

21

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

21

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

20

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

21

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

21

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

18

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

3

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

3

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

18

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

8

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

11

XCSE

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

13

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

6

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

CEUX

36


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

19

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

5

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

2

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

4

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

5

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

8

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

1

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.5000

10

TQEX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

36

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

4

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

8

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

1

AQEU

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

5

CEUX

Genmab A/S

10/06/2024

3:37:27 PM

1,917.0000

22

XCSE

Genmab A/S

10/06/2024

3:37:30 PM

1,916.0000

20

CEUX

Genmab A/S

10/06/2024

3:37:30 PM

1,916.0000

9

CEUX

Genmab A/S

10/06/2024

3:37:30 PM

1,916.0000

10

CEUX

Genmab A/S

10/06/2024

3:37:30 PM

1,916.0000

1

AQEU

Genmab A/S

10/06/2024

3:37:30 PM

1,916.0000

1

AQEU

Genmab A/S

10/06/2024

3:43:28 PM

1,917.5000

8

CEUX

Genmab A/S

10/06/2024

3:43:28 PM

1,917.5000

1

CEUX

Genmab A/S

10/06/2024

3:43:28 PM

1,917.5000

8

CEUX

Genmab A/S

10/06/2024

3:43:28 PM

1,917.5000

40

XCSE

Genmab A/S

10/06/2024

3:43:28 PM

1,917.5000

20

CEUX

Genmab A/S

10/06/2024

3:43:28 PM

1,917.5000

17

CEUX

Genmab A/S

10/06/2024

3:43:49 PM

1,919.5000

5

CEUX

Genmab A/S

10/06/2024

3:44:32 PM

1,922.0000

1

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

31

XCSE

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

40

XCSE

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

31

XCSE

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

40

XCSE

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

28

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

28

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

20

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

4

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

15

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

2

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

2

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

15

TQEX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

1

CEUX

37


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

27

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

4

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

28

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

4

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

31

XCSE

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

17

XCSE

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

15

CEUX

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

4

AQEU

Genmab A/S

10/06/2024

3:44:37 PM

1,922.0000

31

XCSE

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

6

XCSE

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

25

XCSE

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

1

XCSE

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

4

XCSE

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

13

CEUX

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

17

CEUX

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

11

CEUX

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

9

CEUX

Genmab A/S

10/06/2024

3:44:38 PM

1,922.0000

24

CEUX

Genmab A/S

10/06/2024

3:46:46 PM

1,916.5000

19

CEUX

Genmab A/S

10/06/2024

3:46:46 PM

1,916.5000

2

AQEU

Genmab A/S

10/06/2024

3:46:46 PM

1,916.5000

8

AQEU

Genmab A/S

10/06/2024

3:46:46 PM

1,916.5000

5

TQEX

Genmab A/S

10/06/2024

3:46:46 PM

1,916.5000

20

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

34

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

5

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

5

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

6

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

38

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

4

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

34

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

38

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

38

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

27

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

34

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

34

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

5

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

15

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

6

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

23

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

23

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

34

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

28

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

5

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

3

AQEU

38


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

3

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

6

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

2

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

6

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

6

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

6

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,915.5000

5

TQEX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

23

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

16

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

4

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

20

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

25

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

21

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

25

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

22

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

22

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

22

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

22

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

22

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

3

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

19

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

3

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

10

XCSE

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

5

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

6

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

9

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

8

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.5000

1

AQEU

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

4

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

4

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

9

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

3

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

9

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

19

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

1

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

12

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

11

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

7

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

20

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

1

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

11

CEUX

Genmab A/S

10/06/2024

3:48:07 PM

1,914.0000

2

CEUX

Genmab A/S

10/06/2024

3:53:46 PM

1,914.5000

5

TQEX

Genmab A/S

10/06/2024

3:53:46 PM

1,914.5000

20

XCSE

Genmab A/S

10/06/2024

3:53:47 PM

1,914.5000

20

XCSE

Genmab A/S

10/06/2024

3:53:48 PM

1,914.5000

9

XCSE

39


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

22

XCSE

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

22

XCSE

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

17

XCSE

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

5

XCSE

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

5

XCSE

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

17

XCSE

Genmab A/S

10/06/2024

3:54:33 PM

1,916.0000

17

XCSE

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

8

CEUX

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

72

CEUX

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

11

AQEU

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

3

TQEX

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

9

TQEX

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

49

XCSE

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

22

XCSE

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

18

XCSE

Genmab A/S

10/06/2024

3:55:32 PM

1,917.5000

1

CEUX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

26

CEUX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

4

AQEU

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

28

XCSE

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

28

XCSE

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

2

XCSE

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

26

CEUX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

8

CEUX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

3

AQEU

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

8

XCSE

Genmab A/S

10/06/2024

3:57:05 PM

1,917.0000

36

CEUX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

4

CEUX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

8

AQEU

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

1

AQEU

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

4

TQEX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

3

TQEX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

1

TQEX

Genmab A/S

10/06/2024

3:57:05 PM

1,917.5000

10

AQEU

Genmab A/S

10/06/2024

3:57:54 PM

1,916.5000

31

XCSE

Genmab A/S

10/06/2024

3:57:54 PM

1,916.5000

5

TQEX

Genmab A/S

10/06/2024

3:59:01 PM

1,916.0000

29

CEUX

Genmab A/S

10/06/2024

3:59:01 PM

1,916.0000

2

CEUX

Genmab A/S

10/06/2024

3:59:01 PM

1,916.0000

3

TQEX

Genmab A/S

10/06/2024

3:59:01 PM

1,916.0000

35

XCSE

Genmab A/S

10/06/2024

3:59:01 PM

1,916.0000

11

XCSE

Genmab A/S

10/06/2024

3:59:27 PM

1,917.5000

9

CEUX

Genmab A/S

10/06/2024

3:59:27 PM

1,917.5000

4

CEUX

Genmab A/S

10/06/2024

3:59:57 PM

1,917.5000

9

XCSE

Genmab A/S

10/06/2024

3:59:57 PM

1,917.5000

10

CEUX

Genmab A/S

10/06/2024

3:59:57 PM

1,917.5000

8

CEUX

Genmab A/S

10/06/2024

3:59:57 PM

1,917.5000

1

AQEU

Genmab A/S

10/06/2024

3:59:57 PM

1,917.5000

8

AQEU

40


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

3:59:57 PM

1,917.5000

5

TQEX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

43

XCSE

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

7

CEUX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

31

CEUX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

38

CEUX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

29

CEUX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

6

AQEU

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

15

AQEU

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

6

AQEU

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

6

TQEX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

15

TQEX

Genmab A/S

10/06/2024

4:00:00 PM

1,918.0000

43

XCSE

Genmab A/S

10/06/2024

4:00:01 PM

1,918.0000

41

XCSE

Genmab A/S

10/06/2024

4:00:01 PM

1,918.0000

39

XCSE

Genmab A/S

10/06/2024

4:00:01 PM

1,918.0000

1

XCSE

Genmab A/S

10/06/2024

4:00:01 PM

1,918.0000

7

XCSE

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

6

CEUX

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

12

CEUX

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

50

CEUX

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

41

CEUX

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

15

AQEU

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

1

AQEU

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

9

TQEX

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

8

TQEX

Genmab A/S

10/06/2024

4:01:23 PM

1,915.5000

122

XCSE

Genmab A/S

10/06/2024

4:02:26 PM

1,916.0000

36

XCSE

Genmab A/S

10/06/2024

4:03:10 PM

1,917.0000

2

XCSE

Genmab A/S

10/06/2024

4:03:10 PM

1,917.0000

32

CEUX

Genmab A/S

10/06/2024

4:03:10 PM

1,917.0000

6

AQEU

Genmab A/S

10/06/2024

4:03:10 PM

1,917.0000

43

XCSE

Genmab A/S

10/06/2024

4:03:56 PM

1,917.5000

90

XCSE

Genmab A/S

10/06/2024

4:03:56 PM

1,917.5000

80

XCSE

Genmab A/S

10/06/2024

4:03:56 PM

1,917.5000

10

XCSE

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

53

XCSE

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

53

XCSE

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

53

XCSE

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

23

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

24

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

1

AQEU

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

53

XCSE

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

22

XCSE

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

24

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

23

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

6

AQEU

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

1

AQEU

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

22

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

25

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

25

CEUX

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

42

CEUX

41


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:05:11 PM

1,919.5000

35

CEUX

Genmab A/S

10/06/2024

4:07:01 PM

1,917.5000

50

CEUX

Genmab A/S

10/06/2024

4:07:01 PM

1,917.5000

55

CEUX

Genmab A/S

10/06/2024

4:07:01 PM

1,917.5000

15

AQEU

Genmab A/S

10/06/2024

4:07:01 PM

1,917.5000

16

TQEX

Genmab A/S

10/06/2024

4:07:01 PM

1,917.5000

99

XCSE

Genmab A/S

10/06/2024

4:07:01 PM

1,917.5000

17

XCSE

Genmab A/S

10/06/2024

4:09:42 PM

1,919.0000

13

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

17

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

2

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

14

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

90

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

16

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

1

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

17

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

17

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

12

CEUX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

1

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

1

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

15

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

1

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

5

TQEX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

18

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

118

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

18

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

12

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

6

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

18

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

6

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

8

XCSE

Genmab A/S

10/06/2024

4:09:51 PM

1,917.5000

8

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,917.5000

8

TQEX

Genmab A/S

10/06/2024

4:09:51 PM

1,917.5000

1

TQEX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

8

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

1

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

15

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

8

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

5

TQEX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

8

TQEX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

1

TQEX

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

8

AQEU

Genmab A/S

10/06/2024

4:09:51 PM

1,918.0000

5

XCSE

Genmab A/S

10/06/2024

4:11:42 PM

1,919.0000

9

XCSE

Genmab A/S

10/06/2024

4:11:42 PM

1,919.0000

9

CEUX

Genmab A/S

10/06/2024

4:11:42 PM

1,919.0000

5

TQEX

Genmab A/S

10/06/2024

4:11:42 PM

1,919.0000

9

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

9

CEUX

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

9

CEUX

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

1

AQEU

42


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

5

TQEX

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

4

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

5

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

9

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

18

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

9

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

8

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

9

CEUX

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

5

TQEX

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

14

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

24

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

24

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

24

XCSE

Genmab A/S

10/06/2024

4:11:48 PM

1,919.0000

11

XCSE

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

4

XCSE

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

6

XCSE

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

10

CEUX

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

5

TQEX

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

10

CEUX

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

5

TQEX

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

10

XCSE

Genmab A/S

10/06/2024

4:12:08 PM

1,918.5000

12

XCSE

Genmab A/S

10/06/2024

4:14:08 PM

1,918.0000

10

AQEU

Genmab A/S

10/06/2024

4:14:08 PM

1,918.0000

1

AQEU

Genmab A/S

10/06/2024

4:14:08 PM

1,918.0000

15

AQEU

Genmab A/S

10/06/2024

4:14:08 PM

1,918.0000

9

TQEX

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

5

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

36

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

19

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

19

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

41

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

41

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

54

CEUX

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

60

XCSE

Genmab A/S

10/06/2024

4:14:16 PM

1,917.0000

19

CEUX

Genmab A/S

10/06/2024

4:14:17 PM

1,917.0000

3

XCSE

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

35

CEUX

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

26

CEUX

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

8

AQEU

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

7

AQEU

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

1

AQEU

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

60

XCSE

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

8

XCSE

Genmab A/S

10/06/2024

4:14:19 PM

1,917.0000

25

XCSE

Genmab A/S

10/06/2024

4:16:18 PM

1,919.0000

26

XCSE

Genmab A/S

10/06/2024

4:16:18 PM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

4:17:38 PM

1,919.5000

1

CEUX

Genmab A/S

10/06/2024

4:17:38 PM

1,919.5000

10

CEUX

Genmab A/S

10/06/2024

4:17:38 PM

1,919.5000

11

XCSE

43


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:17:38 PM

1,919.5000

20

XCSE

Genmab A/S

10/06/2024

4:17:38 PM

1,919.5000

36

XCSE

Genmab A/S

10/06/2024

4:17:38 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

11

XCSE

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

20

XCSE

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

13

XCSE

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

11

XCSE

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

20

XCSE

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

23

XCSE

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

4:17:40 PM

1,919.5000

8

AQEU

Genmab A/S

10/06/2024

4:17:43 PM

1,919.5000

11

XCSE

Genmab A/S

10/06/2024

4:17:43 PM

1,919.5000

20

XCSE

Genmab A/S

10/06/2024

4:17:43 PM

1,919.5000

11

XCSE

Genmab A/S

10/06/2024

4:17:43 PM

1,919.5000

19

XCSE

Genmab A/S

10/06/2024

4:17:43 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:18:33 PM

1,919.0000

10

XCSE

Genmab A/S

10/06/2024

4:18:33 PM

1,919.0000

77

XCSE

Genmab A/S

10/06/2024

4:18:33 PM

1,919.0000

5

TQEX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

104

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

93

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

6

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

13

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

15

TQEX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

4

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

2

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

6

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

10

XCSE

44


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

15

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

6

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

12

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

1

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

5

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

13

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

6

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

3

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

18

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

22

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

11

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

10

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

14

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

10

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

21

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

8

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

1

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

10

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

7

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

25

XCSE

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

24

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

21

CEUX

Genmab A/S

10/06/2024

4:19:55 PM

1,919.5000

20

AQEU

Genmab A/S

10/06/2024

4:19:55 PM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

23

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

25

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

6

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

4

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

13

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

25

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

4

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

23

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

4

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

9

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

12

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

9

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

11

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

25

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

25

XCSE

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

8

CEUX

45


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

14

CEUX

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

17

CEUX

Genmab A/S

10/06/2024

4:19:56 PM

1,919.0000

5

XCSE

Genmab A/S

10/06/2024

4:24:43 PM

1,918.5000

134

XCSE

Genmab A/S

10/06/2024

4:24:43 PM

1,918.5000

59

CEUX

Genmab A/S

10/06/2024

4:24:43 PM

1,918.5000

9

TQEX

Genmab A/S

10/06/2024

4:24:44 PM

1,918.5000

89

XCSE

Genmab A/S

10/06/2024

4:27:13 PM

1,919.0000

54

XCSE

Genmab A/S

10/06/2024

4:27:13 PM

1,919.0000

53

XCSE

Genmab A/S

10/06/2024

4:27:13 PM

1,919.0000

2

CEUX

Genmab A/S

10/06/2024

4:27:13 PM

1,919.0000

5

CEUX

Genmab A/S

10/06/2024

4:27:13 PM

1,919.0000

8

CEUX

Genmab A/S

10/06/2024

4:28:51 PM

1,920.5000

37

TQEX

Genmab A/S

10/06/2024

4:29:05 PM

1,920.5000

35

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

29

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

30

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

50

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

4

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

54

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

10

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

54

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

8

AQEU

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

15

AQEU

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

8

AQEU

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

10

AQEU

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

59

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

29

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

54

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

27

CEUX

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

59

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

10

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

39

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

1

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

9

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

1

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

16

XCSE

Genmab A/S

10/06/2024

4:29:07 PM

1,920.0000

41

XCSE

Genmab A/S

10/06/2024

4:31:32 PM

1,919.5000

10

XCSE

Genmab A/S

10/06/2024

4:32:55 PM

1,922.0000

35

XCSE

Genmab A/S

10/06/2024

4:33:08 PM

1,922.0000

34

XCSE

Genmab A/S

10/06/2024

4:33:24 PM

1,921.5000

8

XCSE

Genmab A/S

10/06/2024

4:33:24 PM

1,922.0000

36

XCSE

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

35

CEUX

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

13

CEUX

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

5

TQEX

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

7

CEUX

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

9

CEUX

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

13

CEUX

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

22

XCSE

46


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

9

XCSE

Genmab A/S

10/06/2024

4:35:16 PM

1,922.0000

11

XCSE

Genmab A/S

10/06/2024

4:35:22 PM

1,922.0000

22

XCSE

Genmab A/S

10/06/2024

4:35:22 PM

1,922.0000

11

XCSE

Genmab A/S

10/06/2024

4:35:22 PM

1,922.0000

45

XCSE

Genmab A/S

10/06/2024

4:35:22 PM

1,922.0000

20

CEUX

Genmab A/S

10/06/2024

4:35:22 PM

1,922.0000

11

CEUX

Genmab A/S

10/06/2024

4:35:22 PM

1,922.0000

9

CEUX

Genmab A/S

10/06/2024

4:35:26 PM

1,922.0000

44

CEUX

Genmab A/S

10/06/2024

4:35:26 PM

1,922.0000

7

TQEX

Genmab A/S

10/06/2024

4:35:26 PM

1,922.0000

1

CEUX

Genmab A/S

10/06/2024

4:35:26 PM

1,922.0000

7

TQEX

Genmab A/S

10/06/2024

4:35:26 PM

1,922.0000

15

XCSE

Genmab A/S

10/06/2024

4:35:26 PM

1,922.0000

7

XCSE

Genmab A/S

10/06/2024

4:35:29 PM

1,922.0000

31

XCSE

Genmab A/S

10/06/2024

4:36:33 PM

1,922.5000

21

CEUX

Genmab A/S

10/06/2024

4:36:33 PM

1,922.5000

22

XCSE

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

44

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

44

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

44

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

7

AQEU

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

7

AQEU

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

21

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

23

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

44

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

5

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

31

CEUX

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

3

AQEU

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

3

AQEU

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

1

AQEU

Genmab A/S

10/06/2024

4:36:55 PM

1,923.5000

3

AQEU

Genmab A/S

10/06/2024

4:37:05 PM

1,923.5000

35

CEUX

Genmab A/S

10/06/2024

4:37:14 PM

1,923.5000

34

CEUX

Genmab A/S

10/06/2024

4:37:25 PM

1,923.5000

36

CEUX

Genmab A/S

10/06/2024

4:37:36 PM

1,923.5000

37

CEUX

Genmab A/S

10/06/2024

4:37:50 PM

1,923.5000

34

CEUX

Genmab A/S

10/06/2024

4:38:00 PM

1,924.0000

9

AQEU

Genmab A/S

10/06/2024

4:38:00 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

6

CEUX

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

6

CEUX

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

28

CEUX

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

11

CEUX

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

11

XCSE

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

11

XCSE

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

14

XCSE

Genmab A/S

10/06/2024

4:38:00 PM

1,923.5000

11

CEUX

Genmab A/S

10/06/2024

4:38:29 PM

1,923.5000

1

XCSE

Genmab A/S

10/06/2024

4:38:30 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

4:38:30 PM

1,924.0000

14

AQEU

47


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:38:34 PM

1,924.0000

8

AQEU

Genmab A/S

10/06/2024

4:38:34 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

4:38:34 PM

1,924.0000

15

AQEU

Genmab A/S

10/06/2024

4:38:46 PM

1,924.0000

8

AQEU

Genmab A/S

10/06/2024

4:38:46 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

4:38:53 PM

1,924.0000

1

AQEU

Genmab A/S

10/06/2024

4:38:58 PM

1,924.5000

8

TQEX

Genmab A/S

10/06/2024

4:38:58 PM

1,924.5000

7

TQEX

Genmab A/S

10/06/2024

4:38:58 PM

1,924.5000

1

TQEX

Genmab A/S

10/06/2024

4:39:05 PM

1,924.5000

8

TQEX

Genmab A/S

10/06/2024

4:39:05 PM

1,924.5000

7

TQEX

Genmab A/S

10/06/2024

4:39:05 PM

1,924.5000

1

TQEX

Genmab A/S

10/06/2024

4:39:11 PM

1,924.0000

64

CEUX

Genmab A/S

10/06/2024

4:39:11 PM

1,924.5000

3

TQEX

Genmab A/S

10/06/2024

4:39:11 PM

1,924.5000

1

TQEX

Genmab A/S

10/06/2024

4:39:21 PM

1,924.5000

36

CEUX

Genmab A/S

10/06/2024

4:39:24 PM

1,924.5000

34

CEUX

Genmab A/S

10/06/2024

4:39:42 PM

1,924.5000

36

XCSE

Genmab A/S

10/06/2024

4:39:45 PM

1,924.5000

34

XCSE

Genmab A/S

10/06/2024

4:40:02 PM

1,924.5000

37

XCSE

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

2

CEUX

Genmab A/S

10/06/2024

4:40:07 PM

1,924.5000

37

CEUX

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

30

CEUX

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

6

XCSE

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

9

XCSE

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

19

XCSE

Genmab A/S

10/06/2024

4:40:07 PM

1,924.0000

15

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

17

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

8

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

18

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

8

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

18

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

20

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

15

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

14

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

48


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

31

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

32

CEUX

Genmab A/S

10/06/2024

4:40:09 PM

1,924.0000

34

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

5

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

10

CEUX

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:31 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:33 PM

1,923.0000

2

CEUX

Genmab A/S

10/06/2024

4:44:33 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:33 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:33 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:34 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:34 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:34 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:34 PM

1,923.0000

8

CEUX

Genmab A/S

10/06/2024

4:44:34 PM

1,923.0000

11

XCSE

Genmab A/S

10/06/2024

4:44:38 PM

1,922.5000

67

XCSE

Genmab A/S

10/06/2024

4:44:38 PM

1,922.5000

60

CEUX

Genmab A/S

10/06/2024

4:44:38 PM

1,922.5000

67

XCSE

Genmab A/S

10/06/2024

4:44:46 PM

1,922.5000

67

XCSE

Genmab A/S

10/06/2024

4:44:46 PM

1,922.5000

40

XCSE

Genmab A/S

10/06/2024

4:44:46 PM

1,922.5000

60

CEUX

Genmab A/S

10/06/2024

4:44:46 PM

1,922.5000

9

AQEU

Genmab A/S

10/06/2024

4:44:46 PM

1,922.5000

19

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

32

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

71

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

63

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

12

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

39

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

71

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

63

XCSE

49


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

12

XCSE

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

32

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

18

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

39

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

11

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

1

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

64

CEUX

Genmab A/S

10/06/2024

4:47:10 PM

1,922.5000

57

CEUX

Genmab A/S

10/06/2024

4:47:27 PM

1,922.5000

12

XCSE

Genmab A/S

10/06/2024

4:47:27 PM

1,922.5000

66

XCSE

Genmab A/S

10/06/2024

4:47:27 PM

1,922.5000

27

XCSE

Genmab A/S

10/06/2024

4:48:42 PM

1,923.0000

50

XCSE

Genmab A/S

10/06/2024

4:48:42 PM

1,923.0000

46

CEUX

Genmab A/S

10/06/2024

4:48:42 PM

1,923.0000

46

CEUX

Genmab A/S

10/06/2024

4:48:42 PM

1,923.0000

14

XCSE

Genmab A/S

10/06/2024

4:49:20 PM

1,923.5000

1

AQEU

Genmab A/S

10/06/2024

4:49:20 PM

1,923.5000

6

AQEU

Genmab A/S

10/06/2024

4:49:20 PM

1,923.5000

8

AQEU

Genmab A/S

10/06/2024

4:49:20 PM

1,923.5000

1

TQEX

Genmab A/S

10/06/2024

4:49:20 PM

1,923.5000

21

TQEX

Genmab A/S

10/06/2024

4:49:24 PM

1,923.5000

8

AQEU

Genmab A/S

10/06/2024

4:49:24 PM

1,923.5000

1

AQEU

Genmab A/S

10/06/2024

4:49:24 PM

1,923.5000

11

TQEX

Genmab A/S

10/06/2024

4:49:24 PM

1,923.5000

1

TQEX

Genmab A/S

10/06/2024

4:49:31 PM

1,923.5000

36

CEUX

Genmab A/S

10/06/2024

4:49:31 PM

1,923.5000

3

CEUX

Genmab A/S

10/06/2024

4:49:36 PM

1,923.5000

1

AQEU

Genmab A/S

10/06/2024

4:49:36 PM

1,923.5000

1

TQEX

Genmab A/S

10/06/2024

4:49:36 PM

1,923.5000

31

XCSE

Genmab A/S

10/06/2024

4:49:43 PM

1,924.5000

36

CEUX

Genmab A/S

10/06/2024

4:49:43 PM

1,924.5000

14

CEUX

Genmab A/S

10/06/2024

4:49:43 PM

1,924.5000

3

CEUX

Genmab A/S

10/06/2024

4:49:43 PM

1,924.5000

6

CEUX

Genmab A/S

10/06/2024

4:49:43 PM

1,924.5000

2

CEUX

Genmab A/S

10/06/2024

4:49:48 PM

1,924.0000

35

CEUX

Genmab A/S

10/06/2024

4:49:55 PM

1,924.0000

31

CEUX

Genmab A/S

10/06/2024

4:49:55 PM

1,924.0000

4

CEUX

Genmab A/S

10/06/2024

4:49:58 PM

1,923.5000

18

CEUX

Genmab A/S

10/06/2024

4:49:58 PM

1,923.5000

18

XCSE

Genmab A/S

10/06/2024

4:49:58 PM

1,923.5000

56

XCSE

Genmab A/S

10/06/2024

4:49:58 PM

1,923.5000

49

CEUX

Genmab A/S

10/06/2024

4:50:03 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

4:50:06 PM

1,923.5000

49

XCSE

Genmab A/S

10/06/2024

4:50:06 PM

1,923.5000

67

CEUX

Genmab A/S

10/06/2024

4:50:11 PM

1,923.5000

25

XCSE

Genmab A/S

10/06/2024

4:50:22 PM

1,923.0000

18

XCSE

Genmab A/S

10/06/2024

4:50:29 PM

1,923.0000

18

XCSE

Genmab A/S

10/06/2024

4:51:00 PM

1,925.0000

30

CEUX

Genmab A/S

10/06/2024

4:51:00 PM

1,925.0000

3

CEUX

50


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:51:05 PM

1,925.0000

36

CEUX

Genmab A/S

10/06/2024

4:51:05 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,925.0000

36

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,925.0000

25

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,925.0000

11

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

20

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

XCSE

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

CEUX

Genmab A/S

10/06/2024

4:51:10 PM

1,924.5000

12

XCSE

Genmab A/S

10/06/2024

4:51:13 PM

1,924.5000

12

XCSE

Genmab A/S

10/06/2024

4:51:38 PM

1,925.0000

5

AQEU

Genmab A/S

10/06/2024

4:51:38 PM

1,925.0000

1

AQEU

Genmab A/S

10/06/2024

4:51:38 PM

1,925.0000

8

AQEU

Genmab A/S

10/06/2024

4:51:38 PM

1,925.0000

8

AQEU

Genmab A/S

10/06/2024

4:51:41 PM

1,925.0000

8

AQEU

Genmab A/S

10/06/2024

4:51:41 PM

1,925.0000

1

AQEU

Genmab A/S

10/06/2024

4:51:41 PM

1,925.0000

8

AQEU

Genmab A/S

10/06/2024

4:51:47 PM

1,925.0000

27

CEUX

Genmab A/S

10/06/2024

4:51:47 PM

1,925.0000

12

CEUX

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

36

CEUX

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

4

CEUX

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

8

CEUX

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

8

AQEU

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

1

AQEU

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

8

TQEX

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

1

TQEX

Genmab A/S

10/06/2024

4:51:51 PM

1,925.0000

2

XCSE

Genmab A/S

10/06/2024

4:51:56 PM

1,925.0000

34

CEUX

Genmab A/S

10/06/2024

4:52:16 PM

1,925.0000

74

CEUX

Genmab A/S

10/06/2024

4:52:30 PM

1,925.5000

3

CEUX

Genmab A/S

10/06/2024

4:53:25 PM

1,925.0000

4

XCSE

Genmab A/S

10/06/2024

4:53:33 PM

1,925.5000

10

CEUX

Genmab A/S

10/06/2024

4:53:53 PM

1,925.5000

48

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

11

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

10

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

35

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

19

XCSE

51


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

6

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

9

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

23

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

5

CEUX

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

5

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

25

XCSE

Genmab A/S

10/06/2024

4:54:00 PM

1,925.5000

16

CEUX

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

10

CEUX

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

4

CEUX

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

10

AQEU

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

1

AQEU

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

15

AQEU

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

10

XCSE

Genmab A/S

10/06/2024

4:54:22 PM

1,926.0000

3

TQEX

Genmab A/S

10/06/2024

4:54:23 PM

1,926.0000

18

XCSE

Genmab A/S

10/06/2024

4:54:23 PM

1,926.0000

18

CEUX

Genmab A/S

10/06/2024

4:54:31 PM

1,926.0000

83

CEUX

Genmab A/S

10/06/2024

4:54:31 PM

1,926.0000

19

CEUX

Genmab A/S

10/06/2024

4:54:31 PM

1,926.0000

11

CEUX

Genmab A/S

10/06/2024

4:54:31 PM

1,926.0000

44

XCSE

Genmab A/S

10/06/2024

4:54:31 PM

1,926.0000

5

XCSE

Genmab A/S

10/06/2024

4:54:31 PM

1,926.0000

10

XCSE

Genmab A/S

10/06/2024

4:54:32 PM

1,926.0000

1

CEUX

Genmab A/S

10/06/2024

4:54:32 PM

1,926.0000

1

CEUX

Genmab A/S

10/06/2024

4:54:48 PM

1,926.5000

11

CEUX

Genmab A/S

10/06/2024

4:54:48 PM

1,926.5000

1

CEUX

Genmab A/S

10/06/2024

4:54:48 PM

1,926.5000

1

CEUX

Genmab A/S

10/06/2024

4:54:48 PM

1,926.5000

3

CEUX

Genmab A/S

10/06/2024

4:54:52 PM

1,926.0000

19

XCSE

Genmab A/S

10/06/2024

4:54:52 PM

1,926.0000

23

XCSE

Genmab A/S

10/06/2024

4:54:52 PM

1,926.0000

15

XCSE

Genmab A/S

10/06/2024

4:54:52 PM

1,926.5000

1

AQEU

Genmab A/S

11/06/2024

9:00:05 AM

1,924.5000

47

XCSE

Genmab A/S

11/06/2024

9:00:05 AM

1,924.5000

43

XCSE

Genmab A/S

11/06/2024

9:00:05 AM

1,924.5000

72

XCSE

Genmab A/S

11/06/2024

9:00:05 AM

1,924.5000

67

XCSE

52


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

9:01:29 AM

1,922.0000

50

CEUX

Genmab A/S

11/06/2024

9:01:29 AM

1,922.0000

10

CEUX

Genmab A/S

11/06/2024

9:02:26 AM

1,920.0000

59

CEUX

Genmab A/S

11/06/2024

9:08:24 AM

1,922.0000

39

CEUX

Genmab A/S

11/06/2024

9:08:24 AM

1,922.0000

31

CEUX

Genmab A/S

11/06/2024

9:08:24 AM

1,922.0000

10

AQEU

Genmab A/S

11/06/2024

9:08:24 AM

1,922.0000

11

TQEX

Genmab A/S

11/06/2024

9:08:24 AM

1,922.0000

78

XCSE

Genmab A/S

11/06/2024

9:09:49 AM

1,917.5000

7

XCSE

Genmab A/S

11/06/2024

9:09:49 AM

1,917.5000

38

XCSE

Genmab A/S

11/06/2024

9:09:49 AM

1,917.5000

6

XCSE

Genmab A/S

11/06/2024

9:09:49 AM

1,917.5000

38

XCSE

Genmab A/S

11/06/2024

9:10:03 AM

1,915.5000

49

XCSE

Genmab A/S

11/06/2024

9:10:03 AM

1,915.5000

49

XCSE

Genmab A/S

11/06/2024

9:10:03 AM

1,915.5000

6

XCSE

Genmab A/S

11/06/2024

9:13:40 AM

1,916.0000

21

CEUX

Genmab A/S

11/06/2024

9:13:40 AM

1,916.0000

21

CEUX

Genmab A/S

11/06/2024

9:13:40 AM

1,916.0000

21

CEUX

Genmab A/S

11/06/2024

9:13:40 AM

1,916.0000

3

CEUX

Genmab A/S

11/06/2024

9:13:40 AM

1,916.0000

23

XCSE

Genmab A/S

11/06/2024

9:13:41 AM

1,916.0000

2

XCSE

Genmab A/S

11/06/2024

9:13:41 AM

1,916.0000

21

XCSE

Genmab A/S

11/06/2024

9:13:41 AM

1,916.0000

79

XCSE

Genmab A/S

11/06/2024

9:13:41 AM

1,916.0000

8

XCSE

Genmab A/S

11/06/2024

9:14:59 AM

1,912.5000

3

AQEU

Genmab A/S

11/06/2024

9:15:36 AM

1,912.5000

53

CEUX

Genmab A/S

11/06/2024

9:15:36 AM

1,912.5000

5

AQEU

Genmab A/S

11/06/2024

9:15:36 AM

1,912.5000

2

TQEX

Genmab A/S

11/06/2024

9:15:36 AM

1,912.5000

6

TQEX

Genmab A/S

11/06/2024

9:15:36 AM

1,912.5000

59

XCSE

Genmab A/S

11/06/2024

9:18:45 AM

1,916.0000

3

XCSE

Genmab A/S

11/06/2024

9:18:49 AM

1,916.0000

10

CEUX

Genmab A/S

11/06/2024

9:18:49 AM

1,916.5000

34

CEUX

Genmab A/S

11/06/2024

9:18:49 AM

1,916.0000

7

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

7

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

8

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

10

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

2

CEUX

Genmab A/S

11/06/2024

9:18:50 AM

1,916.0000

9

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,915.0000

51

XCSE

53


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

9:18:50 AM

1,915.0000

51

XCSE

Genmab A/S

11/06/2024

9:18:50 AM

1,915.0000

37

CEUX

Genmab A/S

11/06/2024

9:20:42 AM

1,918.5000

13

CEUX

Genmab A/S

11/06/2024

9:23:00 AM

1,922.0000

44

XCSE

Genmab A/S

11/06/2024

9:24:18 AM

1,922.5000

20

XCSE

Genmab A/S

11/06/2024

9:24:40 AM

1,922.5000

67

CEUX

Genmab A/S

11/06/2024

9:24:40 AM

1,922.5000

68

AQEU

Genmab A/S

11/06/2024

9:24:40 AM

1,922.0000

47

XCSE

Genmab A/S

11/06/2024

9:24:40 AM

1,922.0000

47

XCSE

Genmab A/S

11/06/2024

9:24:40 AM

1,922.0000

1

XCSE

Genmab A/S

11/06/2024

9:28:04 AM

1,923.0000

44

CEUX

Genmab A/S

11/06/2024

9:28:04 AM

1,923.0000

7

AQEU

Genmab A/S

11/06/2024

9:28:04 AM

1,923.0000

6

TQEX

Genmab A/S

11/06/2024

9:28:04 AM

1,923.0000

10

XCSE

Genmab A/S

11/06/2024

9:28:04 AM

1,923.0000

38

XCSE

Genmab A/S

11/06/2024

9:28:04 AM

1,922.0000

23

CEUX

Genmab A/S

11/06/2024

9:28:04 AM

1,922.0000

5

CEUX

Genmab A/S

11/06/2024

9:30:23 AM

1,920.0000

83

XCSE

Genmab A/S

11/06/2024

9:32:13 AM

1,920.0000

2

CEUX

Genmab A/S

11/06/2024

9:32:49 AM

1,920.0000

28

CEUX

Genmab A/S

11/06/2024

9:32:49 AM

1,920.0000

4

CEUX

Genmab A/S

11/06/2024

9:32:49 AM

1,920.0000

21

CEUX

Genmab A/S

11/06/2024

9:32:49 AM

1,920.0000

3

CEUX

Genmab A/S

11/06/2024

9:32:49 AM

1,920.0000

7

CEUX

Genmab A/S

11/06/2024

9:32:49 AM

1,920.0000

17

CEUX

Genmab A/S

11/06/2024

9:35:34 AM

1,922.0000

22

XCSE

Genmab A/S

11/06/2024

9:35:34 AM

1,922.0000

12

XCSE

Genmab A/S

11/06/2024

9:35:35 AM

1,920.5000

71

XCSE

Genmab A/S

11/06/2024

9:37:18 AM

1,923.0000

38

CEUX

Genmab A/S

11/06/2024

9:37:18 AM

1,923.0000

72

CEUX

Genmab A/S

11/06/2024

9:37:18 AM

1,923.0000

35

CEUX

Genmab A/S

11/06/2024

9:37:18 AM

1,922.5000

19

XCSE

Genmab A/S

11/06/2024

9:39:21 AM

1,922.5000

25

XCSE

Genmab A/S

11/06/2024

9:39:21 AM

1,922.5000

30

XCSE

Genmab A/S

11/06/2024

9:39:21 AM

1,922.5000

5

XCSE

Genmab A/S

11/06/2024

9:39:21 AM

1,922.5000

25

CEUX

Genmab A/S

11/06/2024

9:39:21 AM

1,922.5000

25

TQEX

Genmab A/S

11/06/2024

9:40:55 AM

1,922.0000

49

CEUX

Genmab A/S

11/06/2024

9:44:47 AM

1,923.5000

10

CEUX

Genmab A/S

11/06/2024

9:44:47 AM

1,923.5000

29

CEUX

Genmab A/S

11/06/2024

9:45:30 AM

1,922.5000

55

CEUX

Genmab A/S

11/06/2024

9:45:30 AM

1,922.5000

8

AQEU

Genmab A/S

11/06/2024

9:45:30 AM

1,922.5000

8

TQEX

Genmab A/S

11/06/2024

9:45:30 AM

1,922.5000

56

XCSE

Genmab A/S

11/06/2024

9:45:30 AM

1,922.5000

4

XCSE

Genmab A/S

11/06/2024

9:45:31 AM

1,922.0000

60

TQEX

Genmab A/S

11/06/2024

9:45:31 AM

1,922.0000

23

CEUX

Genmab A/S

11/06/2024

9:45:31 AM

1,922.0000

40

XCSE

Genmab A/S

11/06/2024

9:50:02 AM

1,919.5000

18

XCSE

54


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

9:50:02 AM

1,919.5000

22

XCSE

Genmab A/S

11/06/2024

9:50:43 AM

1,919.0000

23

XCSE

Genmab A/S

11/06/2024

9:50:43 AM

1,919.0000

21

XCSE

Genmab A/S

11/06/2024

9:51:29 AM

1,919.5000

59

XCSE

Genmab A/S

11/06/2024

9:51:29 AM

1,919.5000

29

XCSE

Genmab A/S

11/06/2024

9:51:29 AM

1,919.0000

1

CEUX

Genmab A/S

11/06/2024

9:51:29 AM

1,919.0000

85

CEUX

Genmab A/S

11/06/2024

9:51:29 AM

1,918.5000

29

XCSE

Genmab A/S

11/06/2024

9:51:33 AM

1,916.0000

35

XCSE

Genmab A/S

11/06/2024

9:51:33 AM

1,916.0000

52

XCSE

Genmab A/S

11/06/2024

9:57:02 AM

1,909.0000

55

CEUX

Genmab A/S

11/06/2024

9:57:02 AM

1,909.0000

12

CEUX

Genmab A/S

11/06/2024

9:57:02 AM

1,909.0000

4

CEUX

Genmab A/S

11/06/2024

9:57:02 AM

1,909.0000

8

AQEU

Genmab A/S

11/06/2024

9:57:02 AM

1,909.0000

2

AQEU

Genmab A/S

11/06/2024

9:57:02 AM

1,909.0000

5

CEUX

Genmab A/S

11/06/2024

9:57:02 AM

1,908.5000

37

CEUX

Genmab A/S

11/06/2024

9:57:02 AM

1,908.5000

54

XCSE

Genmab A/S

11/06/2024

9:57:02 AM

1,908.0000

41

AQEU

Genmab A/S

11/06/2024

9:57:02 AM

1,908.0000

6

AQEU

Genmab A/S

11/06/2024

10:03:18 AM

1,914.5000

21

CEUX

Genmab A/S

11/06/2024

10:03:18 AM

1,914.5000

22

CEUX

Genmab A/S

11/06/2024

10:03:18 AM

1,914.5000

6

AQEU

Genmab A/S

11/06/2024

10:03:18 AM

1,914.5000

7

TQEX

Genmab A/S

11/06/2024

10:03:18 AM

1,914.5000

48

XCSE

Genmab A/S

11/06/2024

10:03:18 AM

1,914.0000

13

AQEU

Genmab A/S

11/06/2024

10:03:18 AM

1,914.0000

10

AQEU

Genmab A/S

11/06/2024

10:05:39 AM

1,913.5000

21

CEUX

Genmab A/S

11/06/2024

10:05:39 AM

1,913.5000

13

CEUX

Genmab A/S

11/06/2024

10:05:40 AM

1,913.5000

25

XCSE

Genmab A/S

11/06/2024

10:06:20 AM

1,910.5000

36

CEUX

Genmab A/S

11/06/2024

10:06:20 AM

1,910.5000

8

AQEU

Genmab A/S

11/06/2024

10:08:32 AM

1,911.0000

58

CEUX

Genmab A/S

11/06/2024

10:10:59 AM

1,911.0000

36

CEUX

Genmab A/S

11/06/2024

10:10:59 AM

1,911.0000

10

CEUX

Genmab A/S

11/06/2024

10:10:59 AM

1,911.0000

8

TQEX

Genmab A/S

11/06/2024

10:11:27 AM

1,911.0000

3

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,911.0000

52

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,909.5000

42

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,909.5000

8

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,909.5000

18

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,910.0000

22

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,910.0000

25

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,909.5000

36

XCSE

Genmab A/S

11/06/2024

10:12:14 AM

1,908.5000

37

CEUX

Genmab A/S

11/06/2024

10:18:25 AM

1,913.0000

60

CEUX

Genmab A/S

11/06/2024

10:22:06 AM

1,912.0000

14

CEUX

Genmab A/S

11/06/2024

10:22:06 AM

1,912.0000

4

CEUX

Genmab A/S

11/06/2024

10:22:06 AM

1,912.0000

8

AQEU

55


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

10:22:06 AM

1,912.0000

8

TQEX

Genmab A/S

11/06/2024

10:22:09 AM

1,911.5000

4

CEUX

Genmab A/S

11/06/2024

10:23:19 AM

1,912.0000

10

CEUX

Genmab A/S

11/06/2024

10:23:19 AM

1,912.0000

20

TQEX

Genmab A/S

11/06/2024

10:23:19 AM

1,912.0000

23

CEUX

Genmab A/S

11/06/2024

10:23:19 AM

1,912.0000

15

TQEX

Genmab A/S

11/06/2024

10:23:42 AM

1,911.5000

52

XCSE

Genmab A/S

11/06/2024

10:23:43 AM

1,911.0000

52

CEUX

Genmab A/S

11/06/2024

10:23:43 AM

1,911.0000

3

CEUX

Genmab A/S

11/06/2024

10:27:52 AM

1,909.0000

33

TQEX

Genmab A/S

11/06/2024

10:28:41 AM

1,909.0000

2

AQEU

Genmab A/S

11/06/2024

10:28:41 AM

1,909.0000

36

XCSE

Genmab A/S

11/06/2024

10:29:59 AM

1,910.5000

9

XCSE

Genmab A/S

11/06/2024

10:29:59 AM

1,910.5000

3

XCSE

Genmab A/S

11/06/2024

10:29:59 AM

1,910.5000

14

XCSE

Genmab A/S

11/06/2024

10:30:17 AM

1,910.0000

23

CEUX

Genmab A/S

11/06/2024

10:30:17 AM

1,910.0000

46

CEUX

Genmab A/S

11/06/2024

10:30:17 AM

1,910.0000

4

AQEU

Genmab A/S

11/06/2024

10:30:17 AM

1,910.0000

6

AQEU

Genmab A/S

11/06/2024

10:30:17 AM

1,910.0000

38

XCSE

Genmab A/S

11/06/2024

10:30:17 AM

1,910.0000

76

XCSE

Genmab A/S

11/06/2024

10:32:28 AM

1,908.5000

29

XCSE

Genmab A/S

11/06/2024

10:32:28 AM

1,908.5000

1

XCSE

Genmab A/S

11/06/2024

10:32:28 AM

1,908.5000

9

XCSE

Genmab A/S

11/06/2024

10:32:28 AM

1,908.5000

72

AQEU

Genmab A/S

11/06/2024

10:38:09 AM

1,910.5000

24

CEUX

Genmab A/S

11/06/2024

10:38:09 AM

1,910.5000

24

CEUX

Genmab A/S

11/06/2024

10:38:09 AM

1,910.5000

1

CEUX

Genmab A/S

11/06/2024

10:38:50 AM

1,910.5000

24

CEUX

Genmab A/S

11/06/2024

10:40:41 AM

1,910.5000

39

XCSE

Genmab A/S

11/06/2024

10:40:55 AM

1,909.5000

30

CEUX

Genmab A/S

11/06/2024

10:40:55 AM

1,909.5000

30

CEUX

Genmab A/S

11/06/2024

10:40:55 AM

1,909.5000

10

CEUX

Genmab A/S

11/06/2024

10:43:49 AM

1,909.5000

9

CEUX

Genmab A/S

11/06/2024

10:43:49 AM

1,909.5000

6

CEUX

Genmab A/S

11/06/2024

10:44:09 AM

1,911.0000

22

XCSE

Genmab A/S

11/06/2024

10:44:09 AM

1,911.0000

10

XCSE

Genmab A/S

11/06/2024

10:44:30 AM

1,910.0000

10

XCSE

Genmab A/S

11/06/2024

10:46:34 AM

1,911.0000

39

CEUX

Genmab A/S

11/06/2024

10:46:34 AM

1,910.5000

26

XCSE

Genmab A/S

11/06/2024

10:46:34 AM

1,910.5000

31

XCSE

Genmab A/S

11/06/2024

10:46:52 AM

1,910.0000

68

CEUX

Genmab A/S

11/06/2024

10:47:32 AM

1,908.5000

71

XCSE

Genmab A/S

11/06/2024

10:47:32 AM

1,908.0000

67

CEUX

Genmab A/S

11/06/2024

10:47:32 AM

1,908.0000

29

AQEU

Genmab A/S

11/06/2024

10:47:32 AM

1,908.0000

9

AQEU

Genmab A/S

11/06/2024

10:47:32 AM

1,908.0000

30

AQEU

Genmab A/S

11/06/2024

10:50:14 AM

1,904.0000

72

XCSE

Genmab A/S

11/06/2024

10:50:14 AM

1,903.5000

68

CEUX

56


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

10:59:50 AM

1,906.5000

5

XCSE

Genmab A/S

11/06/2024

10:59:50 AM

1,906.5000

50

XCSE

Genmab A/S

11/06/2024

10:59:50 AM

1,906.5000

10

XCSE

Genmab A/S

11/06/2024

10:59:50 AM

1,906.5000

31

CEUX

Genmab A/S

11/06/2024

10:59:50 AM

1,906.5000

29

CEUX

Genmab A/S

11/06/2024

11:04:16 AM

1,908.5000

39

CEUX

Genmab A/S

11/06/2024

11:04:16 AM

1,908.0000

23

XCSE

Genmab A/S

11/06/2024

11:04:16 AM

1,908.0000

21

XCSE

Genmab A/S

11/06/2024

11:05:11 AM

1,908.0000

33

XCSE

Genmab A/S

11/06/2024

11:08:22 AM

1,912.0000

25

XCSE

Genmab A/S

11/06/2024

11:08:22 AM

1,912.0000

40

XCSE

Genmab A/S

11/06/2024

11:08:22 AM

1,912.0000

50

XCSE

Genmab A/S

11/06/2024

11:08:22 AM

1,912.0000

27

XCSE

Genmab A/S

11/06/2024

11:11:43 AM

1,913.0000

50

XCSE

Genmab A/S

11/06/2024

11:12:15 AM

1,913.0000

28

CEUX

Genmab A/S

11/06/2024

11:12:15 AM

1,913.0000

43

CEUX

Genmab A/S

11/06/2024

11:15:38 AM

1,909.0000

66

XCSE

Genmab A/S

11/06/2024

11:16:52 AM

1,909.0000

27

XCSE

Genmab A/S

11/06/2024

11:16:52 AM

1,909.0000

1

XCSE

Genmab A/S

11/06/2024

11:16:52 AM

1,909.0000

1

XCSE

Genmab A/S

11/06/2024

11:16:52 AM

1,909.0000

1

XCSE

Genmab A/S

11/06/2024

11:17:38 AM

1,908.0000

35

XCSE

Genmab A/S

11/06/2024

11:17:40 AM

1,906.5000

59

XCSE

Genmab A/S

11/06/2024

11:17:40 AM

1,907.0000

62

TQEX

Genmab A/S

11/06/2024

11:17:40 AM

1,906.0000

61

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

22

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

22

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

3

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

10

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

10

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

2

CEUX

Genmab A/S

11/06/2024

11:25:28 AM

1,906.0000

3

CEUX

Genmab A/S

11/06/2024

11:28:27 AM

1,912.0000

47

CEUX

Genmab A/S

11/06/2024

11:28:52 AM

1,910.5000

50

XCSE

Genmab A/S

11/06/2024

11:30:33 AM

1,909.5000

22

CEUX

Genmab A/S

11/06/2024

11:30:33 AM

1,909.5000

22

CEUX

Genmab A/S

11/06/2024

11:30:33 AM

1,909.5000

3

CEUX

Genmab A/S

11/06/2024

11:33:12 AM

1,910.5000

24

XCSE

Genmab A/S

11/06/2024

11:33:12 AM

1,910.5000

50

XCSE

Genmab A/S

11/06/2024

11:35:56 AM

1,909.0000

32

XCSE

Genmab A/S

11/06/2024

11:35:56 AM

1,909.0000

8

XCSE

Genmab A/S

11/06/2024

11:35:56 AM

1,909.0000

25

CEUX

Genmab A/S

11/06/2024

11:35:56 AM

1,909.0000

15

TQEX

Genmab A/S

11/06/2024

11:35:56 AM

1,909.0000

10

XCSE

Genmab A/S

11/06/2024

11:39:22 AM

1,908.0000

6

CEUX

Genmab A/S

11/06/2024

11:39:22 AM

1,908.0000

7

CEUX

Genmab A/S

11/06/2024

11:39:22 AM

1,908.0000

25

CEUX

Genmab A/S

11/06/2024

11:40:44 AM

1,908.0000

4

CEUX

Genmab A/S

11/06/2024

11:40:44 AM

1,908.0000

11

AQEU

57


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

11:40:44 AM

1,908.0000

12

AQEU

Genmab A/S

11/06/2024

11:42:03 AM

1,908.0000

35

XCSE

Genmab A/S

11/06/2024

11:42:03 AM

1,908.0000

34

XCSE

Genmab A/S

11/06/2024

11:43:42 AM

1,908.0000

18

CEUX

Genmab A/S

11/06/2024

11:43:42 AM

1,908.0000

53

CEUX

Genmab A/S

11/06/2024

11:45:23 AM

1,908.0000

11

CEUX

Genmab A/S

11/06/2024

11:45:23 AM

1,908.0000

49

CEUX

Genmab A/S

11/06/2024

11:48:28 AM

1,907.0000

27

TQEX

Genmab A/S

11/06/2024

11:48:28 AM

1,907.0000

35

TQEX

Genmab A/S

11/06/2024

11:48:28 AM

1,906.5000

17

CEUX

Genmab A/S

11/06/2024

11:48:28 AM

1,906.5000

42

CEUX

Genmab A/S

11/06/2024

11:48:28 AM

1,906.0000

62

CEUX

Genmab A/S

11/06/2024

11:53:15 AM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

11:53:15 AM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

11:53:15 AM

1,903.5000

2

XCSE

Genmab A/S

11/06/2024

11:53:17 AM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

11:57:00 AM

1,905.0000

22

CEUX

Genmab A/S

11/06/2024

11:57:00 AM

1,905.0000

5

CEUX

Genmab A/S

11/06/2024

11:57:00 AM

1,905.0000

12

CEUX

Genmab A/S

11/06/2024

11:57:14 AM

1,904.0000

38

TQEX

Genmab A/S

11/06/2024

11:57:14 AM

1,904.0000

20

TQEX

Genmab A/S

11/06/2024

11:57:14 AM

1,904.0000

55

XCSE

Genmab A/S

11/06/2024

11:59:54 AM

1,903.5000

61

XCSE

Genmab A/S

11/06/2024

11:59:54 AM

1,903.0000

60

CEUX

Genmab A/S

11/06/2024

11:59:54 AM

1,903.0000

59

CEUX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

3

CEUX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

7

TQEX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

6

TQEX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

50

XCSE

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

49

XCSE

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

41

CEUX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

7

CEUX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

1

CEUX

Genmab A/S

11/06/2024

12:06:48 PM

1,901.5000

8

TQEX

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

45

XCSE

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

3

XCSE

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

21

XCSE

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

27

XCSE

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

6

XCSE

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

1

XCSE

Genmab A/S

11/06/2024

12:09:26 PM

1,901.0000

3

XCSE

Genmab A/S

11/06/2024

12:09:34 PM

1,900.0000

49

XCSE

Genmab A/S

11/06/2024

12:09:34 PM

1,900.0000

50

XCSE

Genmab A/S

11/06/2024

12:09:34 PM

1,900.0000

8

XCSE

Genmab A/S

11/06/2024

12:09:34 PM

1,899.5000

40

XCSE

Genmab A/S

11/06/2024

12:09:34 PM

1,899.5000

71

XCSE

Genmab A/S

11/06/2024

12:09:34 PM

1,899.0000

44

CEUX

Genmab A/S

11/06/2024

12:15:21 PM

1,894.5000

11

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.5000

40

XCSE

58


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

12:15:21 PM

1,894.5000

51

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.5000

21

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.0000

20

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.0000

23

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.0000

43

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.0000

23

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,894.0000

19

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,893.5000

41

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,893.5000

3

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,893.5000

3

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,893.5000

41

XCSE

Genmab A/S

11/06/2024

12:15:21 PM

1,893.5000

30

XCSE

Genmab A/S

11/06/2024

12:22:47 PM

1,893.0000

26

XCSE

Genmab A/S

11/06/2024

12:22:47 PM

1,893.0000

26

XCSE

Genmab A/S

11/06/2024

12:22:47 PM

1,893.0000

26

XCSE

Genmab A/S

11/06/2024

12:22:47 PM

1,893.0000

17

XCSE

Genmab A/S

11/06/2024

12:22:47 PM

1,893.0000

24

XCSE

Genmab A/S

11/06/2024

12:22:50 PM

1,892.5000

31

XCSE

Genmab A/S

11/06/2024

12:22:50 PM

1,892.5000

9

XCSE

Genmab A/S

11/06/2024

12:22:50 PM

1,892.5000

40

XCSE

Genmab A/S

11/06/2024

12:27:13 PM

1,894.0000

95

XCSE

Genmab A/S

11/06/2024

12:27:13 PM

1,894.0000

85

CEUX

Genmab A/S

11/06/2024

12:27:13 PM

1,894.0000

13

TQEX

Genmab A/S

11/06/2024

12:27:13 PM

1,894.0000

12

AQEU

Genmab A/S

11/06/2024

12:30:11 PM

1,892.5000

2

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

5

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

16

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

21

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

14

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

7

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

2

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

19

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

14

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

7

XCSE

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

1

AQEU

Genmab A/S

11/06/2024

12:31:00 PM

1,894.0000

4

AQEU

Genmab A/S

11/06/2024

12:31:57 PM

1,893.5000

26

XCSE

Genmab A/S

11/06/2024

12:32:42 PM

1,892.5000

24

XCSE

Genmab A/S

11/06/2024

12:32:42 PM

1,892.5000

55

XCSE

Genmab A/S

11/06/2024

12:33:44 PM

1,891.5000

54

XCSE

Genmab A/S

11/06/2024

12:33:44 PM

1,891.5000

48

CEUX

Genmab A/S

11/06/2024

12:33:44 PM

1,891.5000

7

AQEU

Genmab A/S

11/06/2024

12:33:44 PM

1,891.5000

8

TQEX

Genmab A/S

11/06/2024

12:33:44 PM

1,891.0000

15

XCSE

Genmab A/S

11/06/2024

12:33:44 PM

1,891.0000

32

XCSE

Genmab A/S

11/06/2024

12:33:44 PM

1,891.0000

17

XCSE

Genmab A/S

11/06/2024

12:33:44 PM

1,891.0000

47

XCSE

Genmab A/S

11/06/2024

12:33:44 PM

1,891.0000

3

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.5000

15

XCSE

59


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

12:35:50 PM

1,890.5000

28

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.5000

28

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.5000

28

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.5000

15

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.5000

2

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.0000

46

XCSE

Genmab A/S

11/06/2024

12:35:50 PM

1,890.0000

69

XCSE

Genmab A/S

11/06/2024

12:42:57 PM

1,888.5000

85

XCSE

Genmab A/S

11/06/2024

12:45:15 PM

1,888.0000

30

XCSE

Genmab A/S

11/06/2024

12:45:15 PM

1,888.0000

16

XCSE

Genmab A/S

11/06/2024

12:45:15 PM

1,888.0000

16

XCSE

Genmab A/S

11/06/2024

12:45:54 PM

1,887.5000

40

CEUX

Genmab A/S

11/06/2024

12:45:54 PM

1,887.5000

11

CEUX

Genmab A/S

11/06/2024

12:45:54 PM

1,887.0000

42

XCSE

Genmab A/S

11/06/2024

12:45:54 PM

1,887.0000

62

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

55

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

21

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

1

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

1

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

24

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

29

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

21

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

20

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

5

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

21

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

21

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

21

XCSE

Genmab A/S

11/06/2024

12:49:30 PM

1,887.5000

2

CEUX

Genmab A/S

11/06/2024

12:53:42 PM

1,888.0000

1

XCSE

Genmab A/S

11/06/2024

12:53:42 PM

1,888.0000

57

XCSE

Genmab A/S

11/06/2024

12:53:42 PM

1,888.0000

51

CEUX

Genmab A/S

11/06/2024

12:53:42 PM

1,888.0000

9

TQEX

Genmab A/S

11/06/2024

12:56:47 PM

1,889.0000

6

CEUX

Genmab A/S

11/06/2024

12:56:47 PM

1,889.0000

19

CEUX

Genmab A/S

11/06/2024

12:56:47 PM

1,889.0000

10

TQEX

Genmab A/S

11/06/2024

12:56:47 PM

1,889.0000

1

TQEX

Genmab A/S

11/06/2024

12:57:27 PM

1,890.0000

9

TQEX

Genmab A/S

11/06/2024

12:57:45 PM

1,890.5000

1

XCSE

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

38

CEUX

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

38

CEUX

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

6

TQEX

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

6

TQEX

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

42

XCSE

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

1

CEUX

Genmab A/S

11/06/2024

12:57:45 PM

1,890.0000

42

XCSE

Genmab A/S

11/06/2024

1:00:23 PM

1,890.0000

33

XCSE

Genmab A/S

11/06/2024

1:01:48 PM

1,891.5000

40

XCSE

Genmab A/S

11/06/2024

1:02:20 PM

1,892.5000

6

XCSE

Genmab A/S

11/06/2024

1:02:26 PM

1,892.5000

8

XCSE

60


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

1:02:26 PM

1,892.5000

29

XCSE

Genmab A/S

11/06/2024

1:03:26 PM

1,892.5000

4

CEUX

Genmab A/S

11/06/2024

1:03:26 PM

1,892.5000

12

CEUX

Genmab A/S

11/06/2024

1:03:26 PM

1,892.5000

22

XCSE

Genmab A/S

11/06/2024

1:03:26 PM

1,892.5000

2

XCSE

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

50

CEUX

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

23

CEUX

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

11

AQEU

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

11

TQEX

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

24

XCSE

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

1

XCSE

Genmab A/S

11/06/2024

1:03:54 PM

1,891.5000

56

XCSE

Genmab A/S

11/06/2024

1:05:31 PM

1,890.5000

23

XCSE

Genmab A/S

11/06/2024

1:05:31 PM

1,890.5000

23

XCSE

Genmab A/S

11/06/2024

1:05:31 PM

1,890.5000

36

CEUX

Genmab A/S

11/06/2024

1:05:31 PM

1,890.5000

2

AQEU

Genmab A/S

11/06/2024

1:05:31 PM

1,890.5000

8

AQEU

Genmab A/S

11/06/2024

1:05:31 PM

1,890.0000

44

CEUX

Genmab A/S

11/06/2024

1:05:31 PM

1,890.0000

7

AQEU

Genmab A/S

11/06/2024

1:05:31 PM

1,890.0000

6

TQEX

Genmab A/S

11/06/2024

1:05:31 PM

1,890.0000

48

XCSE

Genmab A/S

11/06/2024

1:05:31 PM

1,890.0000

45

XCSE

Genmab A/S

11/06/2024

1:05:31 PM

1,890.0000

58

XCSE

Genmab A/S

11/06/2024

1:05:31 PM

1,890.5000

15

XCSE

Genmab A/S

11/06/2024

1:14:02 PM

1,891.0000

35

AQEU

Genmab A/S

11/06/2024

1:14:02 PM

1,891.5000

36

CEUX

Genmab A/S

11/06/2024

1:14:02 PM

1,891.0000

35

TQEX

Genmab A/S

11/06/2024

1:14:02 PM

1,891.0000

42

XCSE

Genmab A/S

11/06/2024

1:14:02 PM

1,891.0000

11

XCSE

Genmab A/S

11/06/2024

1:14:02 PM

1,891.0000

26

XCSE

Genmab A/S

11/06/2024

1:15:38 PM

1,893.5000

76

XCSE

Genmab A/S

11/06/2024

1:15:38 PM

1,893.5000

68

CEUX

Genmab A/S

11/06/2024

1:15:38 PM

1,893.5000

10

AQEU

Genmab A/S

11/06/2024

1:15:38 PM

1,893.5000

10

TQEX

Genmab A/S

11/06/2024

1:17:10 PM

1,892.0000

37

XCSE

Genmab A/S

11/06/2024

1:17:10 PM

1,892.0000

4

XCSE

Genmab A/S

11/06/2024

1:17:10 PM

1,892.0000

27

CEUX

Genmab A/S

11/06/2024

1:17:10 PM

1,892.0000

14

CEUX

Genmab A/S

11/06/2024

1:17:10 PM

1,892.0000

1

CEUX

Genmab A/S

11/06/2024

1:17:10 PM

1,892.0000

17

XCSE

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

21

XCSE

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

5

XCSE

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

1

CEUX

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

23

CEUX

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

2

AQEU

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

15

TQEX

Genmab A/S

11/06/2024

1:21:50 PM

1,891.5000

21

XCSE

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

44

CEUX

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

7

AQEU

61


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

53

TQEX

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

6

TQEX

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

13

XCSE

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

31

XCSE

Genmab A/S

11/06/2024

1:23:49 PM

1,893.0000

49

XCSE

Genmab A/S

11/06/2024

1:23:50 PM

1,892.5000

37

XCSE

Genmab A/S

11/06/2024

1:23:50 PM

1,892.5000

6

XCSE

Genmab A/S

11/06/2024

1:23:50 PM

1,892.5000

6

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,891.0000

5

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,891.0000

97

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,891.0000

92

CEUX

Genmab A/S

11/06/2024

1:27:22 PM

1,891.0000

13

AQEU

Genmab A/S

11/06/2024

1:27:22 PM

1,891.0000

14

TQEX

Genmab A/S

11/06/2024

1:27:22 PM

1,890.0000

29

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,890.0000

17

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,890.0000

47

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,890.0000

36

XCSE

Genmab A/S

11/06/2024

1:27:22 PM

1,890.0000

34

XCSE

Genmab A/S

11/06/2024

1:36:54 PM

1,889.0000

25

XCSE

Genmab A/S

11/06/2024

1:36:54 PM

1,889.0000

88

XCSE

Genmab A/S

11/06/2024

1:36:54 PM

1,889.0000

25

XCSE

Genmab A/S

11/06/2024

1:36:54 PM

1,889.0000

41

XCSE

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

46

XCSE

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

67

XCSE

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

41

CEUX

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

27

CEUX

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

33

CEUX

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

6

AQEU

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

9

AQEU

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

7

TQEX

Genmab A/S

11/06/2024

1:38:52 PM

1,891.5000

9

TQEX

Genmab A/S

11/06/2024

1:38:52 PM

1,891.0000

54

CEUX

Genmab A/S

11/06/2024

1:38:52 PM

1,891.0000

28

CEUX

Genmab A/S

11/06/2024

1:38:52 PM

1,890.5000

6

XCSE

Genmab A/S

11/06/2024

1:44:26 PM

1,892.0000

47

XCSE

Genmab A/S

11/06/2024

1:44:26 PM

1,892.0000

38

XCSE

Genmab A/S

11/06/2024

1:44:26 PM

1,892.0000

26

XCSE

Genmab A/S

11/06/2024

1:44:26 PM

1,892.0000

42

CEUX

Genmab A/S

11/06/2024

1:44:26 PM

1,892.0000

7

TQEX

Genmab A/S

11/06/2024

1:47:31 PM

1,892.5000

40

CEUX

Genmab A/S

11/06/2024

1:47:31 PM

1,892.5000

6

AQEU

Genmab A/S

11/06/2024

1:47:31 PM

1,892.5000

6

TQEX

Genmab A/S

11/06/2024

1:47:31 PM

1,892.5000

44

XCSE

Genmab A/S

11/06/2024

1:47:31 PM

1,891.5000

12

XCSE

Genmab A/S

11/06/2024

1:47:31 PM

1,891.5000

28

XCSE

Genmab A/S

11/06/2024

1:48:41 PM

1,891.5000

20

XCSE

Genmab A/S

11/06/2024

1:48:41 PM

1,891.5000

20

XCSE

Genmab A/S

11/06/2024

1:48:41 PM

1,891.5000

20

XCSE

Genmab A/S

11/06/2024

1:48:41 PM

1,891.5000

20

TQEX

62


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

1:48:41 PM

1,891.5000

20

TQEX

Genmab A/S

11/06/2024

1:48:41 PM

1,891.5000

20

TQEX

Genmab A/S

11/06/2024

1:49:07 PM

1,890.0000

27

XCSE

Genmab A/S

11/06/2024

1:52:29 PM

1,890.0000

23

XCSE

Genmab A/S

11/06/2024

1:52:29 PM

1,890.0000

17

XCSE

Genmab A/S

11/06/2024

1:52:29 PM

1,890.0000

22

XCSE

Genmab A/S

11/06/2024

1:52:29 PM

1,890.0000

22

XCSE

Genmab A/S

11/06/2024

1:52:29 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

1:52:29 PM

1,890.0000

1

TQEX

Genmab A/S

11/06/2024

1:54:33 PM

1,893.5000

36

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

43

XCSE

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

6

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

33

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

7

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

39

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

7

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

16

CEUX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

7

TQEX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

7

TQEX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

7

TQEX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

7

TQEX

Genmab A/S

11/06/2024

1:54:34 PM

1,893.0000

46

XCSE

Genmab A/S

11/06/2024

1:54:35 PM

1,893.0000

37

XCSE

Genmab A/S

11/06/2024

1:54:35 PM

1,893.0000

6

XCSE

Genmab A/S

11/06/2024

1:54:35 PM

1,893.0000

2

XCSE

Genmab A/S

11/06/2024

1:58:58 PM

1,892.5000

55

XCSE

Genmab A/S

11/06/2024

1:59:35 PM

1,892.0000

40

XCSE

Genmab A/S

11/06/2024

1:59:35 PM

1,892.0000

3

XCSE

Genmab A/S

11/06/2024

1:59:35 PM

1,892.0000

6

XCSE

Genmab A/S

11/06/2024

1:59:35 PM

1,892.0000

16

XCSE

Genmab A/S

11/06/2024

2:01:44 PM

1,892.5000

6

CEUX

Genmab A/S

11/06/2024

2:01:44 PM

1,892.5000

12

XCSE

Genmab A/S

11/06/2024

2:02:28 PM

1,893.5000

33

CEUX

Genmab A/S

11/06/2024

2:02:40 PM

1,893.5000

3

CEUX

Genmab A/S

11/06/2024

2:02:40 PM

1,893.5000

14

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

2

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

22

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

14

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

10

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

3

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

25

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

4

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

6

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

10

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

44

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

CEUX

63


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

6

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

6

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

1

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

22

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

13

XCSE

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

5

CEUX

Genmab A/S

11/06/2024

2:05:20 PM

1,895.0000

6

XCSE

Genmab A/S

11/06/2024

2:05:37 PM

1,894.0000

41

XCSE

Genmab A/S

11/06/2024

2:05:41 PM

1,894.0000

35

XCSE

Genmab A/S

11/06/2024

2:05:41 PM

1,894.0000

6

XCSE

Genmab A/S

11/06/2024

2:05:41 PM

1,894.0000

15

CEUX

Genmab A/S

11/06/2024

2:05:41 PM

1,894.0000

10

TQEX

Genmab A/S

11/06/2024

2:05:41 PM

1,894.0000

6

CEUX

Genmab A/S

11/06/2024

2:05:41 PM

1,894.0000

15

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

34

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

1

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

7

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

4

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

4

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

4

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

1

AQEU

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

5

TQEX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

5

TQEX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

5

TQEX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

1

AQEU

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

5

TQEX

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

21

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

18

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

4

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

22

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

22

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

7

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

7

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

7

XCSE

Genmab A/S

11/06/2024

2:10:22 PM

1,894.5000

8

XCSE

64


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:14:24 PM

1,894.5000

10

AQEU

Genmab A/S

11/06/2024

2:14:24 PM

1,894.5000

8

AQEU

Genmab A/S

11/06/2024

2:14:24 PM

1,894.5000

2

AQEU

Genmab A/S

11/06/2024

2:14:24 PM

1,894.5000

17

AQEU

Genmab A/S

11/06/2024

2:14:57 PM

1,894.5000

1

AQEU

Genmab A/S

11/06/2024

2:14:57 PM

1,894.5000

1

AQEU

Genmab A/S

11/06/2024

2:15:09 PM

1,895.5000

1

AQEU

Genmab A/S

11/06/2024

2:15:09 PM

1,895.5000

1

TQEX

Genmab A/S

11/06/2024

2:15:09 PM

1,895.5000

2

XCSE

Genmab A/S

11/06/2024

2:15:09 PM

1,895.5000

13

XCSE

Genmab A/S

11/06/2024

2:15:09 PM

1,895.5000

18

XCSE

Genmab A/S

11/06/2024

2:15:34 PM

1,895.5000

1

AQEU

Genmab A/S

11/06/2024

2:15:34 PM

1,895.5000

1

TQEX

Genmab A/S

11/06/2024

2:15:34 PM

1,895.5000

7

TQEX

Genmab A/S

11/06/2024

2:15:34 PM

1,895.5000

15

XCSE

Genmab A/S

11/06/2024

2:15:34 PM

1,895.5000

8

XCSE

Genmab A/S

11/06/2024

2:15:34 PM

1,895.5000

4

XCSE

Genmab A/S

11/06/2024

2:16:19 PM

1,895.5000

1

AQEU

Genmab A/S

11/06/2024

2:16:19 PM

1,895.5000

8

AQEU

Genmab A/S

11/06/2024

2:16:19 PM

1,895.5000

1

TQEX

Genmab A/S

11/06/2024

2:16:19 PM

1,895.5000

8

TQEX

Genmab A/S

11/06/2024

2:16:19 PM

1,895.5000

15

XCSE

Genmab A/S

11/06/2024

2:16:51 PM

1,895.5000

1

AQEU

Genmab A/S

11/06/2024

2:16:51 PM

1,895.5000

8

AQEU

Genmab A/S

11/06/2024

2:16:51 PM

1,895.5000

1

TQEX

Genmab A/S

11/06/2024

2:16:51 PM

1,895.5000

8

TQEX

Genmab A/S

11/06/2024

2:16:51 PM

1,895.5000

16

XCSE

Genmab A/S

11/06/2024

2:16:51 PM

1,895.5000

4

XCSE

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

4

CEUX

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

5

CEUX

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

1

AQEU

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

1

TQEX

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

3

TQEX

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

16

XCSE

Genmab A/S

11/06/2024

2:17:21 PM

1,895.0000

7

XCSE

Genmab A/S

11/06/2024

2:17:54 PM

1,894.5000

18

XCSE

Genmab A/S

11/06/2024

2:17:54 PM

1,894.5000

18

XCSE

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

20

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

14

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

6

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

8

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

6

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

14

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

1

AQEU

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

5

TQEX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

5

TQEX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

34

TQEX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

21

XCSE

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

21

XCSE

65


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

21

XCSE

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

21

XCSE

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

5

CEUX

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

2

AQEU

Genmab A/S

11/06/2024

2:18:14 PM

1,894.0000

1

TQEX

Genmab A/S

11/06/2024

2:18:23 PM

1,894.0000

48

XCSE

Genmab A/S

11/06/2024

2:20:19 PM

1,892.5000

51

CEUX

Genmab A/S

11/06/2024

2:20:19 PM

1,892.5000

8

AQEU

Genmab A/S

11/06/2024

2:20:19 PM

1,892.5000

8

TQEX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

8

CEUX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

5

TQEX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

5

TQEX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

3

TQEX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

8

XCSE

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

36

XCSE

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

8

CEUX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

8

CEUX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

8

CEUX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

8

CEUX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

6

CEUX

Genmab A/S

11/06/2024

2:22:24 PM

1,893.0000

14

XCSE

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

54

CEUX

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

19

CEUX

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

34

CEUX

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

8

AQEU

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

3

AQEU

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

8

TQEX

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

8

TQEX

Genmab A/S

11/06/2024

2:25:49 PM

1,893.5000

8

AQEU

Genmab A/S

11/06/2024

2:25:49 PM

1,893.5000

25

AQEU

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

60

XCSE

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

58

XCSE

Genmab A/S

11/06/2024

2:25:49 PM

1,892.5000

16

CEUX

Genmab A/S

11/06/2024

2:25:49 PM

1,892.5000

11

CEUX

Genmab A/S

11/06/2024

2:25:49 PM

1,892.5000

3

AQEU

Genmab A/S

11/06/2024

2:25:49 PM

1,892.5000

5

TQEX

Genmab A/S

11/06/2024

2:25:49 PM

1,893.0000

5

CEUX

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

41

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

33

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

1

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

7

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

7

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

17

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

17

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

7

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

30

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

4

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

38

XCSE

Genmab A/S

11/06/2024

2:25:50 PM

1,892.5000

16

XCSE

66


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:31:46 PM

1,892.0000

20

XCSE

Genmab A/S

11/06/2024

2:33:10 PM

1,894.5000

53

CEUX

Genmab A/S

11/06/2024

2:33:10 PM

1,894.5000

27

CEUX

Genmab A/S

11/06/2024

2:33:10 PM

1,894.5000

22

XCSE

Genmab A/S

11/06/2024

2:33:10 PM

1,894.5000

67

XCSE

Genmab A/S

11/06/2024

2:35:45 PM

1,894.5000

32

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

38

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

38

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

1

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

10

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

10

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

5

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

10

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

1

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

21

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

1

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

10

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

1

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

3

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

35

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

8

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

2

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

6

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

11

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

2:36:52 PM

1,893.5000

44

XCSE

Genmab A/S

11/06/2024

2:36:52 PM

1,893.5000

6

XCSE

Genmab A/S

11/06/2024

2:36:58 PM

1,893.5000

44

XCSE

Genmab A/S

11/06/2024

2:36:58 PM

1,893.5000

56

XCSE

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

19

XCSE

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

106

XCSE

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

18

CEUX

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

3

CEUX

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

1

AQEU

Genmab A/S

11/06/2024

2:37:12 PM

1,893.0000

5

TQEX

Genmab A/S

11/06/2024

2:38:33 PM

1,893.0000

19

XCSE

Genmab A/S

11/06/2024

2:38:33 PM

1,893.0000

32

XCSE

Genmab A/S

11/06/2024

2:39:22 PM

1,891.5000

18

CEUX

Genmab A/S

11/06/2024

2:40:48 PM

1,893.0000

29

XCSE

Genmab A/S

11/06/2024

2:40:48 PM

1,893.0000

182

XCSE

67


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:40:50 PM

1,893.0000

29

XCSE

Genmab A/S

11/06/2024

2:40:50 PM

1,893.0000

29

XCSE

Genmab A/S

11/06/2024

2:41:01 PM

1,893.0000

29

XCSE

Genmab A/S

11/06/2024

2:41:01 PM

1,893.0000

12

XCSE

Genmab A/S

11/06/2024

2:41:01 PM

1,893.0000

27

CEUX

Genmab A/S

11/06/2024

2:41:01 PM

1,893.0000

5

TQEX

Genmab A/S

11/06/2024

2:41:44 PM

1,894.0000

45

XCSE

Genmab A/S

11/06/2024

2:41:44 PM

1,894.0000

96

XCSE

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

16

CEUX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

16

CEUX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

2

AQEU

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

5

TQEX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

5

TQEX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

16

XCSE

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

16

CEUX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

6

CEUX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

5

TQEX

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

39

XCSE

Genmab A/S

11/06/2024

2:43:51 PM

1,894.0000

39

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

34

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

16

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

3

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

19

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

19

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

19

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

6

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

5

TQEX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,892.5000

21

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

20

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

50

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

5

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

1

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

5

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

8

XCSE

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

5

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

14

CEUX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

8

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

AQEU

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

8

TQEX

Genmab A/S

11/06/2024

2:45:24 PM

1,893.0000

2

TQEX

68


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:48:14 PM

1,892.0000

22

XCSE

Genmab A/S

11/06/2024

2:48:14 PM

1,892.0000

20

CEUX

Genmab A/S

11/06/2024

2:48:14 PM

1,892.0000

5

TQEX

Genmab A/S

11/06/2024

2:48:14 PM

1,892.0000

20

CEUX

Genmab A/S

11/06/2024

2:48:14 PM

1,892.0000

5

TQEX

Genmab A/S

11/06/2024

2:48:15 PM

1,892.0000

18

CEUX

Genmab A/S

11/06/2024

2:48:15 PM

1,892.0000

5

TQEX

Genmab A/S

11/06/2024

2:48:15 PM

1,892.0000

20

XCSE

Genmab A/S

11/06/2024

2:51:12 PM

1,892.5000

30

CEUX

Genmab A/S

11/06/2024

2:51:12 PM

1,892.5000

18

CEUX

Genmab A/S

11/06/2024

2:51:12 PM

1,892.5000

6

CEUX

Genmab A/S

11/06/2024

2:51:12 PM

1,892.5000

7

TQEX

Genmab A/S

11/06/2024

2:51:12 PM

1,892.5000

53

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

16

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

95

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

16

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

16

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

16

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

3

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

2

AQEU

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

14

AQEU

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

2

AQEU

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

21

AQEU

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

5

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

14

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

5

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

33

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

1

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

15

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

105

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

15

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

15

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

15

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

12

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

18

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

45

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,892.0000

17

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

17

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

17

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

12

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

11

CEUX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

2

AQEU

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

18

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

10

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

7

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

6

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

22

XCSE

69


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

13

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

5

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

34

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

11

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

9

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

3

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

35

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

36

XCSE

Genmab A/S

11/06/2024

2:52:51 PM

1,891.5000

3

XCSE

Genmab A/S

11/06/2024

2:57:42 PM

1,889.5000

20

XCSE

Genmab A/S

11/06/2024

2:57:42 PM

1,889.5000

20

CEUX

Genmab A/S

11/06/2024

2:57:42 PM

1,889.5000

11

XCSE

Genmab A/S

11/06/2024

3:00:31 PM

1,894.0000

12

XCSE

Genmab A/S

11/06/2024

3:00:31 PM

1,894.0000

12

CEUX

Genmab A/S

11/06/2024

3:03:34 PM

1,895.0000

2

CEUX

Genmab A/S

11/06/2024

3:03:34 PM

1,895.0000

2

CEUX

Genmab A/S

11/06/2024

3:03:34 PM

1,895.0000

1

XCSE

Genmab A/S

11/06/2024

3:03:34 PM

1,895.0000

22

CEUX

Genmab A/S

11/06/2024

3:03:34 PM

1,895.0000

23

XCSE

Genmab A/S

11/06/2024

3:03:51 PM

1,895.5000

6

XCSE

Genmab A/S

11/06/2024

3:03:51 PM

1,895.5000

36

XCSE

Genmab A/S

11/06/2024

3:03:51 PM

1,895.5000

8

XCSE

Genmab A/S

11/06/2024

3:03:51 PM

1,895.5000

10

XCSE

Genmab A/S

11/06/2024

3:03:51 PM

1,895.5000

36

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

22

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

5

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

5

TQEX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

23

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

23

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

23

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

5

TQEX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

17

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

1

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

21

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

2

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

1

CEUX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

1

AQEU

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

2

AQEU

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

5

TQEX

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

5

TQEX

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

8

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

8

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,894.5000

2

XCSE

Genmab A/S

11/06/2024

3:03:59 PM

1,895.0000

34

XCSE

70


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:05:12 PM

1,898.5000

25

XCSE

Genmab A/S

11/06/2024

3:05:12 PM

1,898.5000

9

XCSE

Genmab A/S

11/06/2024

3:05:35 PM

1,899.5000

18

XCSE

Genmab A/S

11/06/2024

3:05:35 PM

1,899.5000

21

XCSE

Genmab A/S

11/06/2024

3:05:56 PM

1,899.5000

20

XCSE

Genmab A/S

11/06/2024

3:05:56 PM

1,899.5000

18

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

7

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

3

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

8

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

3

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

8

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

3

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

3

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

3

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

CEUX

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

8

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

XCSE

Genmab A/S

11/06/2024

3:06:19 PM

1,899.0000

11

XCSE

Genmab A/S

11/06/2024

3:07:47 PM

1,899.0000

7

XCSE

Genmab A/S

11/06/2024

3:08:52 PM

1,900.0000

7

XCSE

Genmab A/S

11/06/2024

3:08:59 PM

1,900.0000

37

XCSE

Genmab A/S

11/06/2024

3:09:08 PM

1,900.0000

18

XCSE

Genmab A/S

11/06/2024

3:09:08 PM

1,900.0000

15

XCSE

Genmab A/S

11/06/2024

3:09:08 PM

1,900.0000

2

XCSE

Genmab A/S

11/06/2024

3:09:27 PM

1,900.0000

3

CEUX

Genmab A/S

11/06/2024

3:09:27 PM

1,900.0000

13

CEUX

Genmab A/S

11/06/2024

3:09:27 PM

1,900.0000

4

XCSE

Genmab A/S

11/06/2024

3:09:27 PM

1,900.0000

20

XCSE

Genmab A/S

11/06/2024

3:09:55 PM

1,900.0000

4

CEUX

Genmab A/S

11/06/2024

3:10:57 PM

1,900.0000

2

CEUX

Genmab A/S

11/06/2024

3:11:05 PM

1,899.5000

90

CEUX

Genmab A/S

11/06/2024

3:11:05 PM

1,899.5000

13

AQEU

Genmab A/S

11/06/2024

3:11:05 PM

1,899.5000

14

TQEX

Genmab A/S

11/06/2024

3:11:05 PM

1,899.5000

100

XCSE

Genmab A/S

11/06/2024

3:11:05 PM

1,899.0000

8

XCSE

71


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:11:05 PM

1,899.0000

1

XCSE

Genmab A/S

11/06/2024

3:11:05 PM

1,899.0000

12

XCSE

Genmab A/S

11/06/2024

3:11:05 PM

1,899.0000

1

XCSE

Genmab A/S

11/06/2024

3:11:05 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

21

XCSE

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

17

XCSE

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

21

CEUX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

21

CEUX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

13

CEUX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

2

AQEU

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

36

CEUX

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

8

XCSE

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

12

XCSE

Genmab A/S

11/06/2024

3:11:49 PM

1,899.0000

8

XCSE

Genmab A/S

11/06/2024

3:14:26 PM

1,900.5000

17

XCSE

Genmab A/S

11/06/2024

3:14:26 PM

1,900.5000

51

XCSE

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

37

XCSE

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

62

XCSE

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

55

CEUX

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

8

AQEU

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

5

AQEU

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

3

AQEU

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

5

AQEU

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

9

TQEX

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

9

TQEX

Genmab A/S

11/06/2024

3:15:00 PM

1,900.5000

43

XCSE

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

28

CEUX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

16

CEUX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

22

CEUX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

2

AQEU

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

22

CEUX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

5

AQEU

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

3

TQEX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

3

TQEX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

3

TQEX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

3

TQEX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

28

XCSE

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

16

XCSE

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

4

XCSE

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

16

XCSE

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

31

XCSE

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

25

CEUX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

16

CEUX

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

2

AQEU

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

8

AQEU

Genmab A/S

11/06/2024

3:16:43 PM

1,901.0000

16

TQEX

72


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:18:47 PM

1,900.0000

8

XCSE

Genmab A/S

11/06/2024

3:20:21 PM

1,903.5000

42

CEUX

Genmab A/S

11/06/2024

3:20:31 PM

1,904.0000

18

CEUX

Genmab A/S

11/06/2024

3:20:31 PM

1,904.0000

50

CEUX

Genmab A/S

11/06/2024

3:20:31 PM

1,904.0000

6

CEUX

Genmab A/S

11/06/2024

3:20:33 PM

1,903.5000

42

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

76

XCSE

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

76

XCSE

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

76

XCSE

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

6

XCSE

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

50

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

59

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

69

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

14

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

11

TQEX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

4

TQEX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

11

TQEX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

6

TQEX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.5000

12

XCSE

Genmab A/S

11/06/2024

3:20:46 PM

1,903.0000

17

XCSE

Genmab A/S

11/06/2024

3:20:46 PM

1,903.0000

3

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.0000

1

CEUX

Genmab A/S

11/06/2024

3:20:46 PM

1,903.0000

17

XCSE

Genmab A/S

11/06/2024

3:20:49 PM

1,903.0000

17

XCSE

Genmab A/S

11/06/2024

3:20:49 PM

1,903.0000

8

CEUX

Genmab A/S

11/06/2024

3:20:49 PM

1,903.0000

1

TQEX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

5

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

18

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

3

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

4

TQEX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

3

TQEX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

17

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

9

CEUX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

2

TQEX

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

3

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

14

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

14

XCSE

73


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

3

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

5

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,902.5000

23

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

36

XCSE

Genmab A/S

11/06/2024

3:20:52 PM

1,903.0000

9

XCSE

Genmab A/S

11/06/2024

3:28:25 PM

1,901.5000

20

XCSE

Genmab A/S

11/06/2024

3:28:25 PM

1,901.5000

23

XCSE

Genmab A/S

11/06/2024

3:28:25 PM

1,901.5000

38

CEUX

Genmab A/S

11/06/2024

3:28:25 PM

1,901.5000

38

CEUX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

7

XCSE

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

58

CEUX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

50

CEUX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

8

CEUX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

AQEU

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

AQEU

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

AQEU

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

TQEX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

TQEX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

3

TQEX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

TQEX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

3

TQEX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

50

XCSE

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

7

XCSE

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

29

XCSE

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

AQEU

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

9

TQEX

Genmab A/S

11/06/2024

3:29:22 PM

1,903.0000

63

XCSE

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

15

AQEU

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

15

AQEU

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

1

CEUX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

5

TQEX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

5

TQEX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

5

TQEX

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

XCSE

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

51

XCSE

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

19

XCSE

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

15

XCSE

Genmab A/S

11/06/2024

3:30:30 PM

1,903.0000

1

XCSE

Genmab A/S

11/06/2024

3:30:31 PM

1,903.0000

36

XCSE

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

18

CEUX

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

13

CEUX

74


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

6

AQEU

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

18

XCSE

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

17

XCSE

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

5

TQEX

Genmab A/S

11/06/2024

3:32:00 PM

1,903.0000

5

TQEX

Genmab A/S

11/06/2024

3:32:06 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

3:32:06 PM

1,902.0000

17

CEUX

Genmab A/S

11/06/2024

3:32:08 PM

1,902.0000

4

CEUX

Genmab A/S

11/06/2024

3:32:08 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:32:08 PM

1,902.0000

22

XCSE

Genmab A/S

11/06/2024

3:32:08 PM

1,902.0000

22

XCSE

Genmab A/S

11/06/2024

3:32:08 PM

1,902.0000

21

CEUX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

25

CEUX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

7

AQEU

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

14

AQEU

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

25

CEUX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

8

TQEX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

8

TQEX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

30

XCSE

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

25

XCSE

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

25

XCSE

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

20

XCSE

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

25

CEUX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

8

TQEX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

7

TQEX

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

20

XCSE

Genmab A/S

11/06/2024

3:35:21 PM

1,904.5000

30

XCSE

Genmab A/S

11/06/2024

3:35:21 PM

1,904.0000

2

AQEU

Genmab A/S

11/06/2024

3:35:29 PM

1,901.5000

18

XCSE

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

18

XCSE

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

36

XCSE

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

16

XCSE

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

18

CEUX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

18

CEUX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

2

CEUX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

15

CEUX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

2

AQEU

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

2

AQEU

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

5

TQEX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

5

TQEX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

4

TQEX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

2

XCSE

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

16

XCSE

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

36

CEUX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

5

TQEX

Genmab A/S

11/06/2024

3:35:30 PM

1,901.5000

9

CEUX

Genmab A/S

11/06/2024

3:35:31 PM

1,901.5000

15

CEUX

Genmab A/S

11/06/2024

3:35:31 PM

1,901.5000

19

CEUX

75


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:38:20 PM

1,902.0000

31

XCSE

Genmab A/S

11/06/2024

3:38:20 PM

1,902.0000

31

XCSE

Genmab A/S

11/06/2024

3:38:20 PM

1,902.0000

31

XCSE

Genmab A/S

11/06/2024

3:38:20 PM

1,902.0000

30

CEUX

Genmab A/S

11/06/2024

3:38:20 PM

1,902.0000

3

TQEX

Genmab A/S

11/06/2024

3:38:20 PM

1,902.0000

30

CEUX

Genmab A/S

11/06/2024

3:39:34 PM

1,902.5000

28

CEUX

Genmab A/S

11/06/2024

3:39:34 PM

1,902.5000

28

CEUX

Genmab A/S

11/06/2024

3:39:34 PM

1,902.5000

7

TQEX

Genmab A/S

11/06/2024

3:39:34 PM

1,902.5000

51

XCSE

Genmab A/S

11/06/2024

3:40:08 PM

1,903.5000

34

AQEU

Genmab A/S

11/06/2024

3:40:11 PM

1,903.0000

1

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

42

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

37

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

37

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

5

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

37

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

6

TQEX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

6

TQEX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

42

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

42

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

37

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

42

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

42

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

18

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

6

TQEX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

35

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

51

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

10

XCSE

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

4

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

16

CEUX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

1

AQEU

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

2

TQEX

Genmab A/S

11/06/2024

3:40:16 PM

1,902.5000

3

XCSE

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

13

CEUX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

36

CEUX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

39

CEUX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

7

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

4

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

7

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

6

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

7

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

4

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

7

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

10

CEUX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

8

TQEX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

8

TQEX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

55

XCSE

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

51

XCSE

76


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

35

XCSE

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

1

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

8

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

2

TQEX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

8

TQEX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

10

TQEX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

24

XCSE

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

1

AQEU

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

2

TQEX

Genmab A/S

11/06/2024

3:42:52 PM

1,903.0000

4

XCSE

Genmab A/S

11/06/2024

3:45:11 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

3:45:11 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

3:45:11 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

3:45:11 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

3:45:11 PM

1,903.5000

3

XCSE

Genmab A/S

11/06/2024

3:45:21 PM

1,903.5000

4

TQEX

Genmab A/S

11/06/2024

3:45:21 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

3:45:21 PM

1,903.5000

4

CEUX

Genmab A/S

11/06/2024

3:45:24 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

3:45:24 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

3:46:04 PM

1,903.0000

36

XCSE

Genmab A/S

11/06/2024

3:46:09 PM

1,903.0000

1

AQEU

Genmab A/S

11/06/2024

3:46:34 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

48

XCSE

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

40

XCSE

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

15

XCSE

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

6

AQEU

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

30

CEUX

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

13

CEUX

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

30

CEUX

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

6

AQEU

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

33

XCSE

Genmab A/S

11/06/2024

3:46:50 PM

1,905.0000

11

XCSE

Genmab A/S

11/06/2024

3:46:52 PM

1,905.0000

48

XCSE

Genmab A/S

11/06/2024

3:46:52 PM

1,905.0000

24

XCSE

Genmab A/S

11/06/2024

3:46:52 PM

1,905.0000

43

CEUX

Genmab A/S

11/06/2024

3:46:52 PM

1,905.0000

6

AQEU

Genmab A/S

11/06/2024

3:46:52 PM

1,905.0000

8

AQEU

Genmab A/S

11/06/2024

3:46:52 PM

1,905.0000

62

XCSE

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

70

XCSE

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

131

XCSE

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

64

CEUX

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

16

CEUX

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

9

AQEU

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

10

TQEX

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

153

XCSE

Genmab A/S

11/06/2024

3:47:40 PM

1,902.5000

16

XCSE

Genmab A/S

11/06/2024

3:47:41 PM

1,901.0000

2

XCSE

Genmab A/S

11/06/2024

3:48:54 PM

1,898.0000

37

XCSE

77


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

XCSE

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

XCSE

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

CEUX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

CEUX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

CEUX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

1

AQEU

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

13

AQEU

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

1

AQEU

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

1

AQEU

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

CEUX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

1

AQEU

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

1

TQEX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

XCSE

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

13

XCSE

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

9

XCSE

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

13

XCSE

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

4

TQEX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

8

CEUX

Genmab A/S

11/06/2024

3:51:22 PM

1,899.0000

5

TQEX

Genmab A/S

11/06/2024

3:52:22 PM

1,899.5000

5

AQEU

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

11

CEUX

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

29

XCSE

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

5

XCSE

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

5

XCSE

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

2

XCSE

Genmab A/S

11/06/2024

3:52:41 PM

1,901.0000

70

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

11

CEUX

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

11

CEUX

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

5

CEUX

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

12

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

3

XCSE

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

9

CEUX

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

2

CEUX

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

11

CEUX

Genmab A/S

11/06/2024

3:52:42 PM

1,901.0000

20

XCSE

Genmab A/S

11/06/2024

3:54:54 PM

1,901.0000

38

XCSE

Genmab A/S

11/06/2024

3:55:10 PM

1,901.0000

5

CEUX

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

37

CEUX

78


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

12

CEUX

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

6

AQEU

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

5

TQEX

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

8

XCSE

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

46

XCSE

Genmab A/S

11/06/2024

3:55:13 PM

1,901.0000

13

XCSE

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

2

CEUX

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:07 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:15 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

1

AQEU

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:16 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

CEUX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

4

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

4

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

79


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

9

CEUX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

2

XCSE

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

6

CEUX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

3

CEUX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

3

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

2

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

TQEX

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

1

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

8

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

15

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

23

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

23

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

5

AQEU

Genmab A/S

11/06/2024

3:56:17 PM

1,902.0000

13

AQEU

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

32

XCSE

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

31

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

7

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

6

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

6

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

AQEU

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

AQEU

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

2

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

6

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

19

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

19

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

AQEU

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

28

XCSE

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

4

XCSE

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

32

XCSE

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

2

XCSE

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

3

XCSE

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

AQEU

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

2

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

3

TQEX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

4

CEUX

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

15

CEUX

80


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

8

AQEU

Genmab A/S

11/06/2024

3:58:43 PM

1,902.0000

1

XCSE

Genmab A/S

11/06/2024

3:59:58 PM

1,903.5000

17

CEUX

Genmab A/S

11/06/2024

3:59:58 PM

1,903.5000

2

AQEU

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

17

CEUX

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

17

CEUX

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

17

CEUX

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

13

CEUX

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

2

AQEU

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

10

AQEU

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

3:59:59 PM

1,903.5000

29

TQEX

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

24

XCSE

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

24

XCSE

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

24

XCSE

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

24

XCSE

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

24

XCSE

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

24

XCSE

Genmab A/S

11/06/2024

4:00:22 PM

1,903.5000

12

XCSE

Genmab A/S

11/06/2024

4:01:53 PM

1,903.5000

33

TQEX

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

26

XCSE

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

78

XCSE

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

43

XCSE

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

51

CEUX

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

50

CEUX

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

32

CEUX

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

3

AQEU

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

16

AQEU

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

8

TQEX

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

2

TQEX

Genmab A/S

11/06/2024

4:01:55 PM

1,903.0000

10

TQEX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

1

CEUX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

1

CEUX

Genmab A/S

11/06/2024

4:03:04 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

9

XCSE

81


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

5

XCSE

Genmab A/S

11/06/2024

4:03:06 PM

1,903.5000

25

CEUX

Genmab A/S

11/06/2024

4:03:07 PM

1,903.5000

25

CEUX

Genmab A/S

11/06/2024

4:04:00 PM

1,903.0000

116

XCSE

Genmab A/S

11/06/2024

4:04:00 PM

1,903.0000

70

CEUX

Genmab A/S

11/06/2024

4:04:00 PM

1,903.0000

35

CEUX

Genmab A/S

11/06/2024

4:04:00 PM

1,903.0000

15

AQEU

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

1

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

15

AQEU

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

15

AQEU

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

11

TQEX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

4

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

15

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

1

CEUX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:05:21 PM

1,903.5000

3

XCSE

Genmab A/S

11/06/2024

4:05:22 PM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

4:05:22 PM

1,903.5000

1

XCSE

Genmab A/S

11/06/2024

4:05:22 PM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

4:05:22 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:07:03 PM

1,904.0000

5

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

6

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

2

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

4

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

TQEX

82


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

TQEX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

TQEX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

9

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

9

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

6

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

9

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

6

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

9

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

1

AQEU

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

TQEX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

TQEX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

8

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

3

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

8

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

12

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

8

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

8

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

7

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

CEUX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

5

TQEX

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

36

XCSE

Genmab A/S

11/06/2024

4:07:05 PM

1,904.0000

8

CEUX

Genmab A/S

11/06/2024

4:07:06 PM

1,904.0000

11

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

15

AQEU

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

3

TQEX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

4

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

5

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

2

TQEX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

6

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

2

TQEX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

1

TQEX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

9

XCSE

83


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

36

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

4

CEUX

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

8

AQEU

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

2

AQEU

Genmab A/S

11/06/2024

4:07:36 PM

1,903.5000

7

TQEX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

5

TQEX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

3

CEUX

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

16

XCSE

Genmab A/S

11/06/2024

4:09:09 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:11 PM

1,903.0000

9

CEUX

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

8

CEUX

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

1

AQEU

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

7

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

12

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

12

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

9

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

21

XCSE

Genmab A/S

11/06/2024

4:09:11 PM

1,903.5000

8

XCSE

Genmab A/S

11/06/2024

4:10:29 PM

1,903.0000

4

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

10

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

10

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

16

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

19

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

6

AQEU

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

6

TQEX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

6

TQEX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

2

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

37

XCSE

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

7

XCSE

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

1

XCSE

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

8

XCSE

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

11

XCSE

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

36

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

4

CEUX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

8

AQEU

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

2

AQEU

84


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

8

TQEX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

2

TQEX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

6

TQEX

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

1

AQEU

Genmab A/S

11/06/2024

4:10:37 PM

1,903.0000

1

TQEX

Genmab A/S

11/06/2024

4:10:37 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:10:37 PM

1,902.5000

6

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.5000

114

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

21

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

18

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

15

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.5000

98

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.5000

5

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.5000

15

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.5000

16

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

21

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

18

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

2

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

1

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

21

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

18

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

22

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

19

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

36

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

22

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

19

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

1

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

19

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

19

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

1

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

7

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

12

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

4

XCSE

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

10

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

15

CEUX

85


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

18

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

1

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

3

AQEU

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

5

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

8

TQEX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

13

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

23

CEUX

Genmab A/S

11/06/2024

4:11:37 PM

1,902.0000

4

AQEU

Genmab A/S

11/06/2024

4:12:17 PM

1,897.0000

37

XCSE

Genmab A/S

11/06/2024

4:12:17 PM

1,897.0000

10

XCSE

Genmab A/S

11/06/2024

4:12:18 PM

1,897.0000

47

XCSE

Genmab A/S

11/06/2024

4:12:18 PM

1,897.0000

47

XCSE

Genmab A/S

11/06/2024

4:12:18 PM

1,897.0000

27

XCSE

Genmab A/S

11/06/2024

4:16:28 PM

1,887.5000

20

CEUX

Genmab A/S

11/06/2024

4:16:28 PM

1,887.5000

20

CEUX

Genmab A/S

11/06/2024

4:16:28 PM

1,887.5000

4

CEUX

Genmab A/S

11/06/2024

4:16:28 PM

1,887.5000

5

TQEX

Genmab A/S

11/06/2024

4:16:28 PM

1,887.5000

20

XCSE

Genmab A/S

11/06/2024

4:17:50 PM

1,889.0000

23

XCSE

Genmab A/S

11/06/2024

4:17:50 PM

1,889.0000

23

XCSE

Genmab A/S

11/06/2024

4:17:50 PM

1,889.0000

14

XCSE

Genmab A/S

11/06/2024

4:17:50 PM

1,889.0000

9

XCSE

Genmab A/S

11/06/2024

4:17:51 PM

1,889.0000

23

XCSE

Genmab A/S

11/06/2024

4:17:51 PM

1,889.0000

22

XCSE

Genmab A/S

11/06/2024

4:18:55 PM

1,888.5000

50

CEUX

Genmab A/S

11/06/2024

4:18:55 PM

1,888.5000

40

CEUX

Genmab A/S

11/06/2024

4:18:55 PM

1,888.5000

13

AQEU

Genmab A/S

11/06/2024

4:18:55 PM

1,888.5000

14

TQEX

Genmab A/S

11/06/2024

4:18:55 PM

1,888.5000

100

XCSE

Genmab A/S

11/06/2024

4:19:50 PM

1,887.5000

2

AQEU

Genmab A/S

11/06/2024

4:19:52 PM

1,887.5000

2

XCSE

Genmab A/S

11/06/2024

4:20:04 PM

1,887.0000

56

XCSE

Genmab A/S

11/06/2024

4:20:04 PM

1,887.0000

33

XCSE

Genmab A/S

11/06/2024

4:20:04 PM

1,887.0000

81

CEUX

Genmab A/S

11/06/2024

4:20:04 PM

1,887.0000

12

AQEU

Genmab A/S

11/06/2024

4:20:04 PM

1,887.0000

12

TQEX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

89

CEUX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

22

CEUX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

22

CEUX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

3

CEUX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

15

CEUX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

13

AQEU

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

3

AQEU

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

3

AQEU

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

30

AQEU

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

5

TQEX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

5

TQEX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

25

TQEX

86


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

5

TQEX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

4

TQEX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

14

TQEX

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

99

XCSE

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

24

XCSE

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

12

XCSE

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

12

XCSE

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

12

XCSE

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

7

XCSE

Genmab A/S

11/06/2024

4:22:20 PM

1,888.0000

6

AQEU

Genmab A/S

11/06/2024

4:22:20 PM

1,887.0000

21

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

24

CEUX

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

3

AQEU

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

3

AQEU

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

3

AQEU

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

5

TQEX

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

13

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

11

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

11

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

11

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

2

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

9

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

24

XCSE

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

3

AQEU

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

5

TQEX

Genmab A/S

11/06/2024

4:25:19 PM

1,887.0000

5

TQEX

Genmab A/S

11/06/2024

4:26:18 PM

1,891.0000

4

TQEX

Genmab A/S

11/06/2024

4:26:18 PM

1,891.0000

8

TQEX

Genmab A/S

11/06/2024

4:26:21 PM

1,891.0000

10

TQEX

Genmab A/S

11/06/2024

4:26:21 PM

1,891.0000

8

TQEX

Genmab A/S

11/06/2024

4:26:21 PM

1,891.0000

2

TQEX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

1

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

87


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

10

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

9

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

11

XCSE

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

19

CEUX

Genmab A/S

11/06/2024

4:26:21 PM

1,890.0000

2

AQEU

Genmab A/S

11/06/2024

4:27:28 PM

1,890.0000

16

XCSE

Genmab A/S

11/06/2024

4:27:41 PM

1,891.5000

103

CEUX

Genmab A/S

11/06/2024

4:27:41 PM

1,891.5000

160

XCSE

Genmab A/S

11/06/2024

4:27:41 PM

1,891.5000

84

XCSE

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

5

XCSE

88


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:29:31 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:33 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:33 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:33 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

1

AQEU

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

1

AQEU

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

4

AQEU

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

7

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

1

AQEU

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

5

TQEX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

36

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

4

CEUX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

12

AQEU

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

2

AQEU

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

1

TQEX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

TQEX

Genmab A/S

11/06/2024

4:29:34 PM

1,891.5000

8

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

76

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.5000

36

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,896.0000

22

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,896.0000

36

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,896.0000

35

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,896.0000

23

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

76

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

24

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

40

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

12

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

35

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

19

CEUX

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

83

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

83

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

35

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

48

XCSE

Genmab A/S

11/06/2024

4:33:08 PM

1,895.0000

65

XCSE

Genmab A/S

11/06/2024

4:36:14 PM

1,894.0000

5

AQEU

Genmab A/S

11/06/2024

4:36:14 PM

1,894.0000

1

AQEU

Genmab A/S

11/06/2024

4:37:05 PM

1,895.0000

60

XCSE

89


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

55

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

55

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

5

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

20

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

20

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

15

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

1

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

60

XCSE

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

30

XCSE

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

30

XCSE

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

20

XCSE

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

35

XCSE

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

10

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

44

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

10

CEUX

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

5

XCSE

Genmab A/S

11/06/2024

4:37:08 PM

1,895.0000

35

XCSE

Genmab A/S

11/06/2024

4:37:14 PM

1,894.5000

120

XCSE

Genmab A/S

11/06/2024

4:37:14 PM

1,894.5000

9

TQEX

Genmab A/S

11/06/2024

4:37:14 PM

1,894.5000

18

CEUX

Genmab A/S

11/06/2024

4:37:14 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

4:37:14 PM

1,894.5000

10

CEUX

Genmab A/S

11/06/2024

4:37:14 PM

1,894.5000

19

CEUX

Genmab A/S

11/06/2024

4:37:18 PM

1,894.5000

1

CEUX

Genmab A/S

11/06/2024

4:37:18 PM

1,894.5000

8

AQEU

Genmab A/S

11/06/2024

4:37:18 PM

1,894.5000

64

XCSE

Genmab A/S

11/06/2024

4:38:17 PM

1,893.0000

14

TQEX

Genmab A/S

11/06/2024

4:38:17 PM

1,893.0000

39

XCSE

Genmab A/S

11/06/2024

4:38:17 PM

1,893.0000

41

XCSE

Genmab A/S

11/06/2024

4:40:32 PM

1,896.0000

1

AQEU

Genmab A/S

11/06/2024

4:40:34 PM

1,896.0000

33

XCSE

Genmab A/S

11/06/2024

4:41:01 PM

1,897.5000

48

CEUX

Genmab A/S

11/06/2024

4:41:01 PM

1,897.5000

4

CEUX

Genmab A/S

11/06/2024

4:41:01 PM

1,897.5000

44

CEUX

Genmab A/S

11/06/2024

4:41:01 PM

1,897.5000

18

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

10

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

90


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

10

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

10

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

10

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

10

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

8

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

2

AQEU

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:03 PM

1,897.0000

11

CEUX

Genmab A/S

11/06/2024

4:41:04 PM

1,897.0000

12

XCSE

Genmab A/S

11/06/2024

4:41:50 PM

1,896.5000

11

CEUX

Genmab A/S

11/06/2024

4:41:50 PM

1,896.5000

11

XCSE

Genmab A/S

11/06/2024

4:41:52 PM

1,896.5000

11

CEUX

Genmab A/S

11/06/2024

4:41:52 PM

1,896.5000

11

CEUX

Genmab A/S

11/06/2024

4:41:52 PM

1,896.5000

11

CEUX

Genmab A/S

11/06/2024

4:41:52 PM

1,896.5000

2

CEUX

Genmab A/S

11/06/2024

4:41:52 PM

1,896.5000

11

XCSE

Genmab A/S

11/06/2024

4:41:52 PM

1,896.5000

11

CEUX

Genmab A/S

11/06/2024

4:41:53 PM

1,896.5000

11

XCSE

Genmab A/S

11/06/2024

4:41:55 PM

1,896.5000

11

XCSE

Genmab A/S

11/06/2024

4:41:56 PM

1,896.5000

11

XCSE

91


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:42:20 PM

1,897.0000

8

CEUX

Genmab A/S

11/06/2024

4:42:20 PM

1,897.0000

10

CEUX

Genmab A/S

11/06/2024

4:42:20 PM

1,897.0000

10

CEUX

Genmab A/S

11/06/2024

4:42:25 PM

1,897.0000

5

XCSE

Genmab A/S

11/06/2024

4:42:28 PM

1,897.0000

10

CEUX

Genmab A/S

11/06/2024

4:42:28 PM

1,897.0000

20

CEUX

Genmab A/S

11/06/2024

4:42:35 PM

1,897.0000

71

XCSE

Genmab A/S

11/06/2024

4:43:10 PM

1,898.0000

6

AQEU

Genmab A/S

11/06/2024

4:43:10 PM

1,898.0000

4

AQEU

Genmab A/S

11/06/2024

4:43:10 PM

1,898.0000

4

XCSE

Genmab A/S

11/06/2024

4:43:10 PM

1,898.0000

6

XCSE

Genmab A/S

11/06/2024

4:44:18 PM

1,900.0000

40

XCSE

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

9

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

2

AQEU

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

12

AQEU

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

9

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

4

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

3

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

2

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

3

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

2

CEUX

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

2

AQEU

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:19 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:20 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:21 PM

1,899.5000

10

XCSE

Genmab A/S

11/06/2024

4:44:54 PM

1,902.0000

15

TQEX

Genmab A/S

11/06/2024

4:44:59 PM

1,902.5000

37

CEUX

Genmab A/S

11/06/2024

4:44:59 PM

1,902.0000

11

AQEU

Genmab A/S

11/06/2024

4:45:07 PM

1,902.5000

10

CEUX

Genmab A/S

11/06/2024

4:45:07 PM

1,902.5000

10

CEUX

Genmab A/S

11/06/2024

4:45:07 PM

1,902.5000

10

CEUX

Genmab A/S

11/06/2024

4:45:07 PM

1,902.5000

8

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

4

XCSE

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

3

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

74

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

11

AQEU

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

12

AQEU

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

28

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

28

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

10

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

81

XCSE

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

85

XCSE

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

75

XCSE

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

11

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

8

AQEU

92


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

42

CEUX

Genmab A/S

11/06/2024

4:45:12 PM

1,902.0000

25

CEUX

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

84

XCSE

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

75

CEUX

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

24

CEUX

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

51

CEUX

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

74

CEUX

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

22

CEUX

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

11

AQEU

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

11

AQEU

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

11

AQEU

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

9

AQEU

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

84

XCSE

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

26

XCSE

Genmab A/S

11/06/2024

4:45:35 PM

1,901.5000

80

XCSE

Genmab A/S

11/06/2024

4:47:17 PM

1,901.5000

33

CEUX

Genmab A/S

11/06/2024

4:47:17 PM

1,901.5000

37

XCSE

Genmab A/S

11/06/2024

4:47:17 PM

1,901.5000

134

XCSE

Genmab A/S

11/06/2024

4:47:46 PM

1,901.5000

25

XCSE

Genmab A/S

11/06/2024

4:47:46 PM

1,901.5000

11

TQEX

Genmab A/S

11/06/2024

4:47:46 PM

1,901.5000

53

XCSE

Genmab A/S

11/06/2024

4:48:41 PM

1,902.5000

34

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

96

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

52

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

5

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

8

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

12

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

14

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

14

TQEX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

93


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

37

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

11

XCSE

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

AQEU

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

24

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

24

CEUX

Genmab A/S

11/06/2024

4:48:58 PM

1,902.5000

2

CEUX

Genmab A/S

11/06/2024

4:49:24 PM

1,902.5000

23

XCSE

Genmab A/S

11/06/2024

4:50:05 PM

1,903.0000

11

CEUX

Genmab A/S

11/06/2024

4:50:05 PM

1,903.0000

11

XCSE

Genmab A/S

11/06/2024

4:50:06 PM

1,903.0000

11

XCSE

Genmab A/S

11/06/2024

4:50:07 PM

1,903.0000

11

XCSE

Genmab A/S

11/06/2024

4:50:07 PM

1,903.0000

11

CEUX

Genmab A/S

11/06/2024

4:50:07 PM

1,903.0000

2

AQEU

Genmab A/S

11/06/2024

4:50:07 PM

1,903.0000

15

AQEU

Genmab A/S

11/06/2024

4:50:08 PM

1,903.0000

11

XCSE

Genmab A/S

11/06/2024

4:50:09 PM

1,902.5000

1

XCSE

Genmab A/S

11/06/2024

4:50:09 PM

1,902.5000

44

XCSE

Genmab A/S

11/06/2024

4:50:13 PM

1,903.0000

14

XCSE

Genmab A/S

11/06/2024

4:50:13 PM

1,903.0000

14

XCSE

Genmab A/S

11/06/2024

4:50:17 PM

1,903.0000

14

XCSE

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

72

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

60

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

11

AQEU

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

12

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

11

XCSE

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

69

XCSE

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

11

XCSE

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

10

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

32

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

80

XCSE

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

36

CEUX

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

9

AQEU

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

2

AQEU

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

15

AQEU

Genmab A/S

11/06/2024

4:50:27 PM

1,903.5000

14

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

8

CEUX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

2

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

6

CEUX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

2

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

8

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

8

CEUX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

22

CEUX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

4

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

24

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

22

CEUX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

2

CEUX

94


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

34

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

1

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

41

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

24

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

45

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

13

CEUX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

4

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

3

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

35

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.0000

84

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

9

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

9

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

15

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

9

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

4

TQEX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

10

TQEX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

4

TQEX

Genmab A/S

11/06/2024

4:50:45 PM

1,900.0000

23

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

10

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

36

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

6

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

20

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

15

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

17

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

2

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

1

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

5

XCSE

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

2

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

9

AQEU

Genmab A/S

11/06/2024

4:50:45 PM

1,900.5000

46

XCSE

Genmab A/S

11/06/2024

4:50:48 PM

1,897.5000

50

XCSE

Genmab A/S

11/06/2024

4:51:57 PM

1,899.5000

24

CEUX

Genmab A/S

11/06/2024

4:53:12 PM

1,900.5000

11

CEUX

Genmab A/S

11/06/2024

4:53:12 PM

1,900.5000

12

XCSE

Genmab A/S

11/06/2024

4:53:12 PM

1,900.5000

12

XCSE

Genmab A/S

11/06/2024

4:53:12 PM

1,900.5000

11

CEUX

Genmab A/S

11/06/2024

4:53:12 PM

1,900.5000

12

XCSE

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

10

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

10

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

10

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

11

XCSE

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

11

XCSE

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

41

XCSE

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

10

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

10

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

2

AQEU

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

23

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

23

CEUX

Genmab A/S

11/06/2024

4:53:45 PM

1,900.5000

1

CEUX

95


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

26

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

20

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

5

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

1

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

1

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

5

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

6

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

26

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

26

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

32

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

10

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

26

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

24

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

16

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.5000

6

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

4

CEUX

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

25

XCSE

Genmab A/S

12/06/2024

9:00:42 AM

1,884.0000

8

XCSE

Genmab A/S

12/06/2024

9:00:43 AM

1,877.5000

17

CEUX

Genmab A/S

12/06/2024

9:00:43 AM

1,877.5000

18

XCSE

Genmab A/S

12/06/2024

9:00:46 AM

1,877.5000

18

XCSE

Genmab A/S

12/06/2024

9:00:46 AM

1,877.5000

25

XCSE

Genmab A/S

12/06/2024

9:00:46 AM

1,877.5000

17

CEUX

Genmab A/S

12/06/2024

9:00:46 AM

1,877.5000

5

TQEX

Genmab A/S

12/06/2024

9:00:51 AM

1,876.0000

19

XCSE

Genmab A/S

12/06/2024

9:00:51 AM

1,876.0000

44

XCSE

Genmab A/S

12/06/2024

9:01:11 AM

1,872.0000

44

XCSE

96


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:01:11 AM

1,872.0000

44

XCSE

Genmab A/S

12/06/2024

9:01:11 AM

1,872.0000

44

XCSE

Genmab A/S

12/06/2024

9:01:11 AM

1,872.0000

12

XCSE

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

24

XCSE

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

21

CEUX

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

4

AQEU

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

21

CEUX

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

1

AQEU

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

1

CEUX

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

3

AQEU

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

2

XCSE

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

49

AQEU

Genmab A/S

12/06/2024

9:01:37 AM

1,871.5000

5

AQEU

Genmab A/S

12/06/2024

9:01:47 AM

1,868.5000

33

XCSE

Genmab A/S

12/06/2024

9:01:47 AM

1,868.5000

10

XCSE

Genmab A/S

12/06/2024

9:01:48 AM

1,868.5000

19

XCSE

Genmab A/S

12/06/2024

9:01:48 AM

1,868.5000

15

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

18

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

18

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

17

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

1

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

17

CEUX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

17

CEUX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

2

AQEU

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

5

TQEX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

5

TQEX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

5

TQEX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

16

CEUX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

2

AQEU

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

5

TQEX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

5

TQEX

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

6

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

36

XCSE

Genmab A/S

12/06/2024

9:05:24 AM

1,863.0000

17

XCSE

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

19

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

19

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

18

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

2

AQEU

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

41

AQEU

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

5

TQEX

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

40

TQEX

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

56

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

21

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

21

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

4

CEUX

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

2

AQEU

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

41

AQEU

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

5

TQEX

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

40

TQEX

97


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

20

XCSE

Genmab A/S

12/06/2024

9:05:39 AM

1,860.5000

40

XCSE

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

21

XCSE

Genmab A/S

12/06/2024

9:05:39 AM

1,861.0000

29

XCSE

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

19

CEUX

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

46

CEUX

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

19

CEUX

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

5

CEUX

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

5

TQEX

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

40

TQEX

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

2

AQEU

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

41

AQEU

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

19

XCSE

Genmab A/S

12/06/2024

9:06:24 AM

1,853.5000

26

XCSE

Genmab A/S

12/06/2024

9:08:21 AM

1,857.5000

64

XCSE

Genmab A/S

12/06/2024

9:08:21 AM

1,857.5000

58

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

11

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

11

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

8

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

11

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

8

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

12

XCSE

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

11

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

8

CEUX

Genmab A/S

12/06/2024

9:09:05 AM

1,858.0000

5

CEUX

Genmab A/S

12/06/2024

9:09:06 AM

1,858.0000

23

CEUX

Genmab A/S

12/06/2024

9:09:15 AM

1,858.0000

110

XCSE

Genmab A/S

12/06/2024

9:09:15 AM

1,858.0000

8

XCSE

Genmab A/S

12/06/2024

9:09:38 AM

1,857.5000

47

XCSE

Genmab A/S

12/06/2024

9:09:38 AM

1,857.5000

2

XCSE

Genmab A/S

12/06/2024

9:10:07 AM

1,855.5000

60

XCSE

Genmab A/S

12/06/2024

9:10:07 AM

1,855.5000

54

CEUX

Genmab A/S

12/06/2024

9:10:07 AM

1,855.5000

8

AQEU

Genmab A/S

12/06/2024

9:10:07 AM

1,855.5000

8

TQEX

Genmab A/S

12/06/2024

9:10:07 AM

1,854.0000

3

XCSE

Genmab A/S

12/06/2024

9:10:07 AM

1,854.0000

47

XCSE

Genmab A/S

12/06/2024

9:10:07 AM

1,854.0000

50

XCSE

Genmab A/S

12/06/2024

9:10:07 AM

1,854.0000

25

XCSE

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

2

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

6

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

XCSE

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

6

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

2

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

CEUX

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

XCSE

98


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:12:01 AM

1,857.0000

12

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

5

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

7

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

59

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

12

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

12

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

12

CEUX

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

13

XCSE

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

65

XCSE

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

13

XCSE

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

10

XCSE

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

3

XCSE

Genmab A/S

12/06/2024

9:12:36 AM

1,857.5000

13

XCSE

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

40

XCSE

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

37

XCSE

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

36

CEUX

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

31

CEUX

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

4

CEUX

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

5

AQEU

Genmab A/S

12/06/2024

9:13:38 AM

1,860.0000

3

AQEU

Genmab A/S

12/06/2024

9:14:35 AM

1,862.0000

15

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

CEUX

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

CEUX

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

CEUX

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

8

XCSE

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

18

CEUX

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

10

CEUX

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

5

CEUX

Genmab A/S

12/06/2024

9:14:40 AM

1,862.5000

1

XCSE

Genmab A/S

12/06/2024

9:15:17 AM

1,862.0000

88

CEUX

Genmab A/S

12/06/2024

9:15:44 AM

1,861.5000

47

XCSE

Genmab A/S

12/06/2024

9:15:44 AM

1,861.5000

43

CEUX

Genmab A/S

12/06/2024

9:15:44 AM

1,861.5000

6

AQEU

Genmab A/S

12/06/2024

9:15:44 AM

1,861.5000

7

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,867.0000

70

CEUX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

38

CEUX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

99


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

8

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

38

CEUX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

38

CEUX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

38

CEUX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

10

CEUX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

42

XCSE

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

42

XCSE

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

42

XCSE

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

42

XCSE

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

12

XCSE

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:17:59 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:19:28 AM

1,868.0000

13

XCSE

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

30

XCSE

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

30

XCSE

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

30

XCSE

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

36

CEUX

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

3

CEUX

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

39

CEUX

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

14

CEUX

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

14

CEUX

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

6

AQEU

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

6

AQEU

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

6

AQEU

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

6

AQEU

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

18

AQEU

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

13

XCSE

Genmab A/S

12/06/2024

9:19:39 AM

1,868.0000

1

XCSE

Genmab A/S

12/06/2024

9:20:12 AM

1,865.0000

46

XCSE

Genmab A/S

12/06/2024

9:20:12 AM

1,865.0000

4

XCSE

Genmab A/S

12/06/2024

9:20:12 AM

1,864.5000

42

XCSE

Genmab A/S

12/06/2024

9:20:12 AM

1,865.0000

8

AQEU

Genmab A/S

12/06/2024

9:20:12 AM

1,865.0000

8

TQEX

Genmab A/S

12/06/2024

9:20:12 AM

1,865.0000

10

XCSE

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

33

CEUX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

33

CEUX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

3

CEUX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

5

TQEX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

5

TQEX

100


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

3

TQEX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

5

TQEX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

1

TQEX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

5

TQEX

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

35

XCSE

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

35

XCSE

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

4

XCSE

Genmab A/S

12/06/2024

9:21:46 AM

1,867.5000

20

CEUX

Genmab A/S

12/06/2024

9:22:06 AM

1,866.5000

43

XCSE

Genmab A/S

12/06/2024

9:22:06 AM

1,866.5000

38

CEUX

Genmab A/S

12/06/2024

9:22:06 AM

1,866.5000

6

AQEU

Genmab A/S

12/06/2024

9:22:06 AM

1,866.5000

6

TQEX

Genmab A/S

12/06/2024

9:22:25 AM

1,865.5000

43

XCSE

Genmab A/S

12/06/2024

9:22:25 AM

1,865.5000

74

XCSE

Genmab A/S

12/06/2024

9:23:24 AM

1,869.5000

1

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

29

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

66

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

26

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

26

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

26

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

4

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

22

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

50

CEUX

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

36

CEUX

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

12

AQEU

Genmab A/S

12/06/2024

9:25:19 AM

1,870.0000

14

TQEX

Genmab A/S

12/06/2024

9:25:19 AM

1,869.0000

3

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,869.0000

37

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,869.0000

40

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,869.0000

28

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,868.5000

27

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,868.5000

19

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,868.5000

10

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,868.5000

36

XCSE

Genmab A/S

12/06/2024

9:25:19 AM

1,868.5000

17

XCSE

Genmab A/S

12/06/2024

9:26:25 AM

1,867.0000

47

XCSE

Genmab A/S

12/06/2024

9:26:25 AM

1,867.0000

65

XCSE

Genmab A/S

12/06/2024

9:26:25 AM

1,867.5000

47

XCSE

Genmab A/S

12/06/2024

9:26:25 AM

1,867.5000

67

XCSE

Genmab A/S

12/06/2024

9:29:42 AM

1,865.0000

36

CEUX

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

3

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

93

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

18

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

3

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

46

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

3

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

3

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

15

XCSE

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

53

XCSE

101


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

40

CEUX

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

46

CEUX

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

12

AQEU

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

3

TQEX

Genmab A/S

12/06/2024

9:29:44 AM

1,864.0000

11

TQEX

Genmab A/S

12/06/2024

9:29:45 AM

1,862.0000

43

XCSE

Genmab A/S

12/06/2024

9:29:45 AM

1,862.0000

46

XCSE

Genmab A/S

12/06/2024

9:29:45 AM

1,862.0000

79

XCSE

Genmab A/S

12/06/2024

9:29:45 AM

1,862.0000

32

XCSE

Genmab A/S

12/06/2024

9:29:45 AM

1,862.0000

73

XCSE

Genmab A/S

12/06/2024

9:32:03 AM

1,858.0000

13

XCSE

Genmab A/S

12/06/2024

9:32:03 AM

1,858.0000

37

XCSE

Genmab A/S

12/06/2024

9:32:03 AM

1,858.0000

38

XCSE

Genmab A/S

12/06/2024

9:32:03 AM

1,858.0000

12

XCSE

Genmab A/S

12/06/2024

9:32:03 AM

1,858.0000

8

XCSE

Genmab A/S

12/06/2024

9:32:03 AM

1,858.0000

12

XCSE

Genmab A/S

12/06/2024

9:32:28 AM

1,857.0000

34

XCSE

Genmab A/S

12/06/2024

9:32:28 AM

1,857.0000

6

XCSE

Genmab A/S

12/06/2024

9:32:28 AM

1,856.0000

23

XCSE

Genmab A/S

12/06/2024

9:32:28 AM

1,856.0000

19

XCSE

Genmab A/S

12/06/2024

9:32:31 AM

1,856.0000

26

XCSE

Genmab A/S

12/06/2024

9:32:31 AM

1,856.0000

15

XCSE

Genmab A/S

12/06/2024

9:33:16 AM

1,856.5000

19

CEUX

Genmab A/S

12/06/2024

9:33:16 AM

1,856.5000

24

CEUX

Genmab A/S

12/06/2024

9:33:16 AM

1,856.5000

7

AQEU

Genmab A/S

12/06/2024

9:33:16 AM

1,856.5000

49

XCSE

Genmab A/S

12/06/2024

9:34:01 AM

1,855.5000

23

XCSE

Genmab A/S

12/06/2024

9:34:01 AM

1,855.5000

19

XCSE

Genmab A/S

12/06/2024

9:34:11 AM

1,855.5000

38

XCSE

Genmab A/S

12/06/2024

9:34:11 AM

1,855.5000

58

XCSE

Genmab A/S

12/06/2024

9:34:32 AM

1,855.5000

22

XCSE

Genmab A/S

12/06/2024

9:34:32 AM

1,855.5000

44

XCSE

Genmab A/S

12/06/2024

9:34:32 AM

1,854.5000

47

XCSE

Genmab A/S

12/06/2024

9:34:32 AM

1,854.5000

1

XCSE

Genmab A/S

12/06/2024

9:34:33 AM

1,854.5000

46

XCSE

Genmab A/S

12/06/2024

9:34:33 AM

1,854.5000

17

XCSE

Genmab A/S

12/06/2024

9:34:33 AM

1,854.5000

14

XCSE

Genmab A/S

12/06/2024

9:37:03 AM

1,856.5000

2

CEUX

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

70

XCSE

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

60

CEUX

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

48

CEUX

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

9

AQEU

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

9

AQEU

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

10

TQEX

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

9

AQEU

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

10

TQEX

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

41

XCSE

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

9

XCSE

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

36

CEUX

102


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:37:10 AM

1,856.5000

5

CEUX

Genmab A/S

12/06/2024

9:37:44 AM

1,858.5000

9

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

3

CEUX

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

16

CEUX

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

12

CEUX

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

21

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

12

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

21

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

12

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

13

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

29

XCSE

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

19

CEUX

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

9

CEUX

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

3

CEUX

Genmab A/S

12/06/2024

9:38:02 AM

1,860.5000

9

CEUX

Genmab A/S

12/06/2024

9:39:00 AM

1,863.0000

40

XCSE

Genmab A/S

12/06/2024

9:39:00 AM

1,863.0000

18

XCSE

Genmab A/S

12/06/2024

9:39:00 AM

1,863.0000

50

CEUX

Genmab A/S

12/06/2024

9:39:00 AM

1,863.0000

2

CEUX

Genmab A/S

12/06/2024

9:39:00 AM

1,863.0000

8

AQEU

Genmab A/S

12/06/2024

9:39:00 AM

1,863.0000

8

TQEX

Genmab A/S

12/06/2024

9:39:40 AM

1,863.5000

90

XCSE

Genmab A/S

12/06/2024

9:39:40 AM

1,863.5000

86

CEUX

Genmab A/S

12/06/2024

9:39:40 AM

1,863.5000

2

CEUX

Genmab A/S

12/06/2024

9:40:22 AM

1,861.5000

19

XCSE

Genmab A/S

12/06/2024

9:40:22 AM

1,861.5000

4

XCSE

Genmab A/S

12/06/2024

9:40:22 AM

1,861.5000

5

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,861.5000

18

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,861.5000

2

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,861.5000

23

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,861.5000

10

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.5000

44

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.5000

44

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.5000

7

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.0000

46

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.0000

14

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.0000

46

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.0000

4

XCSE

Genmab A/S

12/06/2024

9:40:23 AM

1,860.0000

3

XCSE

Genmab A/S

12/06/2024

9:42:10 AM

1,857.0000

19

CEUX

Genmab A/S

12/06/2024

9:42:10 AM

1,857.0000

10

CEUX

Genmab A/S

12/06/2024

9:42:20 AM

1,856.5000

46

CEUX

Genmab A/S

12/06/2024

9:42:20 AM

1,856.5000

7

TQEX

Genmab A/S

12/06/2024

9:42:20 AM

1,856.5000

51

XCSE

Genmab A/S

12/06/2024

9:43:05 AM

1,855.5000

19

CEUX

Genmab A/S

12/06/2024

9:43:33 AM

1,855.5000

2

XCSE

Genmab A/S

12/06/2024

9:44:55 AM

1,857.0000

8

TQEX

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

4

CEUX

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

6

AQEU

103


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

32

CEUX

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

4

CEUX

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

6

AQEU

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

5

TQEX

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

3

XCSE

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

37

XCSE

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

15

CEUX

Genmab A/S

12/06/2024

9:45:03 AM

1,857.0000

1

CEUX

Genmab A/S

12/06/2024

9:45:05 AM

1,857.0000

40

XCSE

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

40

XCSE

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

12

XCSE

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

20

CEUX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

5

TQEX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

36

CEUX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

9

CEUX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

6

AQEU

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

5

TQEX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

5

TQEX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

36

CEUX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

3

CEUX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

3

CEUX

Genmab A/S

12/06/2024

9:45:07 AM

1,857.0000

8

AQEU

Genmab A/S

12/06/2024

9:46:04 AM

1,855.5000

44

CEUX

Genmab A/S

12/06/2024

9:46:11 AM

1,855.0000

5

CEUX

Genmab A/S

12/06/2024

9:46:11 AM

1,855.0000

38

CEUX

Genmab A/S

12/06/2024

9:46:11 AM

1,855.0000

6

AQEU

Genmab A/S

12/06/2024

9:46:11 AM

1,855.0000

7

TQEX

Genmab A/S

12/06/2024

9:46:11 AM

1,855.0000

48

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

50

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

40

CEUX

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

5

CEUX

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

10

XCSE

Genmab A/S

12/06/2024

9:47:47 AM

1,854.0000

7

CEUX

Genmab A/S

12/06/2024

9:48:32 AM

1,855.5000

19

XCSE

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

18

CEUX

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

18

CEUX

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

7

CEUX

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

3

AQEU

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

15

XCSE

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

4

XCSE

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

19

XCSE

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

17

XCSE

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

7

CEUX

Genmab A/S

12/06/2024

9:49:07 AM

1,855.0000

40

CEUX

Genmab A/S

12/06/2024

9:50:25 AM

1,856.0000

126

CEUX

104


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

9:50:25 AM

1,856.0000

18

AQEU

Genmab A/S

12/06/2024

9:50:25 AM

1,856.0000

19

TQEX

Genmab A/S

12/06/2024

9:50:25 AM

1,856.0000

140

XCSE

Genmab A/S

12/06/2024

9:50:26 AM

1,855.0000

47

XCSE

Genmab A/S

12/06/2024

9:50:26 AM

1,855.0000

31

XCSE

Genmab A/S

12/06/2024

9:50:26 AM

1,855.0000

47

XCSE

Genmab A/S

12/06/2024

9:50:26 AM

1,855.0000

8

XCSE

Genmab A/S

12/06/2024

9:50:27 AM

1,854.5000

42

XCSE

Genmab A/S

12/06/2024

9:50:27 AM

1,854.5000

8

XCSE

Genmab A/S

12/06/2024

9:50:27 AM

1,854.5000

42

XCSE

Genmab A/S

12/06/2024

9:50:27 AM

1,854.5000

36

CEUX

Genmab A/S

12/06/2024

9:50:27 AM

1,854.5000

3

CEUX

Genmab A/S

12/06/2024

9:52:09 AM

1,847.5000

39

XCSE

Genmab A/S

12/06/2024

9:52:09 AM

1,847.5000

51

XCSE

Genmab A/S

12/06/2024

9:52:09 AM

1,847.5000

87

XCSE

Genmab A/S

12/06/2024

9:53:50 AM

1,848.0000

41

XCSE

Genmab A/S

12/06/2024

9:53:50 AM

1,848.0000

41

XCSE

Genmab A/S

12/06/2024

9:53:50 AM

1,848.0000

26

XCSE

Genmab A/S

12/06/2024

9:53:50 AM

1,848.0000

36

CEUX

Genmab A/S

12/06/2024

9:53:50 AM

1,848.0000

5

CEUX

Genmab A/S

12/06/2024

9:53:50 AM

1,848.0000

5

AQEU

Genmab A/S

12/06/2024

9:56:08 AM

1,850.5000

22

CEUX

Genmab A/S

12/06/2024

9:56:08 AM

1,850.5000

49

CEUX

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

49

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

16

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

20

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

10

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

14

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.5000

48

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.5000

116

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,850.5000

78

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

25

XCSE

Genmab A/S

12/06/2024

9:56:08 AM

1,849.0000

31

XCSE

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

16

CEUX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

5

TQEX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

16

XCSE

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

16

CEUX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

11

CEUX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

3

AQEU

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

5

TQEX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

5

TQEX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

16

XCSE

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

13

XCSE

Genmab A/S

12/06/2024

9:57:49 AM

1,844.0000

5

CEUX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.0000

56

CEUX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.0000

25

CEUX

Genmab A/S

12/06/2024

9:57:49 AM

1,844.5000

30

XCSE

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

7

XCSE

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

53

XCSE

105


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

17

XCSE

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

7

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

1

CEUX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

10:02:09 AM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

10:03:00 AM

1,842.0000

49

XCSE

Genmab A/S

12/06/2024

10:03:00 AM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

10:03:00 AM

1,842.0000

23

XCSE

Genmab A/S

12/06/2024

10:03:03 AM

1,842.0000

23

XCSE

Genmab A/S

12/06/2024

10:03:30 AM

1,842.5000

37

XCSE

Genmab A/S

12/06/2024

10:03:30 AM

1,842.5000

30

XCSE

Genmab A/S

12/06/2024

10:03:30 AM

1,842.5000

72

XCSE

Genmab A/S

12/06/2024

10:03:30 AM

1,842.5000

31

XCSE

Genmab A/S

12/06/2024

10:03:30 AM

1,842.5000

18

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,840.0000

20

CEUX

Genmab A/S

12/06/2024

10:04:54 AM

1,840.0000

29

CEUX

Genmab A/S

12/06/2024

10:04:54 AM

1,840.0000

7

AQEU

Genmab A/S

12/06/2024

10:04:54 AM

1,840.0000

8

TQEX

Genmab A/S

12/06/2024

10:04:54 AM

1,840.0000

55

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

23

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

29

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

29

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

10

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

13

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

10

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,839.0000

7

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,838.5000

48

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,838.5000

19

XCSE

Genmab A/S

12/06/2024

10:04:54 AM

1,838.5000

15

XCSE

Genmab A/S

12/06/2024

10:06:44 AM

1,837.0000

29

XCSE

Genmab A/S

12/06/2024

10:06:44 AM

1,837.0000

8

XCSE

Genmab A/S

12/06/2024

10:07:23 AM

1,837.5000

48

CEUX

Genmab A/S

12/06/2024

10:07:23 AM

1,837.5000

7

AQEU

Genmab A/S

12/06/2024

10:07:23 AM

1,837.5000

8

TQEX

Genmab A/S

12/06/2024

10:07:23 AM

1,837.5000

53

XCSE

Genmab A/S

12/06/2024

10:07:54 AM

1,837.0000

52

XCSE

Genmab A/S

12/06/2024

10:07:54 AM

1,837.0000

47

CEUX

Genmab A/S

12/06/2024

10:07:54 AM

1,837.0000

7

TQEX

Genmab A/S

12/06/2024

10:07:54 AM

1,837.0000

7

CEUX

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

50

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

28

XCSE

106


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

22

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

19

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

31

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

50

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

16

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

7

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

7

XCSE

Genmab A/S

12/06/2024

10:07:58 AM

1,834.5000

20

XCSE

Genmab A/S

12/06/2024

10:09:08 AM

1,838.0000

8

AQEU

Genmab A/S

12/06/2024

10:09:08 AM

1,838.0000

34

AQEU

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

51

XCSE

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

1

CEUX

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

1

CEUX

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

7

TQEX

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

10:12:09 AM

1,839.0000

1

TQEX

Genmab A/S

12/06/2024

10:12:27 AM

1,841.5000

19

CEUX

Genmab A/S

12/06/2024

10:12:27 AM

1,841.5000

1

CEUX

Genmab A/S

12/06/2024

10:12:27 AM

1,841.5000

5

TQEX

Genmab A/S

12/06/2024

10:12:27 AM

1,841.5000

5

TQEX

Genmab A/S

12/06/2024

10:12:27 AM

1,841.5000

1

TQEX

Genmab A/S

12/06/2024

10:12:55 AM

1,841.0000

58

CEUX

Genmab A/S

12/06/2024

10:12:55 AM

1,841.0000

9

AQEU

Genmab A/S

12/06/2024

10:12:55 AM

1,841.0000

9

TQEX

Genmab A/S

12/06/2024

10:12:55 AM

1,841.0000

64

XCSE

Genmab A/S

12/06/2024

10:12:55 AM

1,840.0000

34

XCSE

Genmab A/S

12/06/2024

10:12:55 AM

1,839.5000

1

XCSE

Genmab A/S

12/06/2024

10:12:55 AM

1,839.5000

46

XCSE

Genmab A/S

12/06/2024

10:12:55 AM

1,839.5000

47

XCSE

Genmab A/S

12/06/2024

10:12:55 AM

1,839.5000

1

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,842.0000

83

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,842.0000

75

CEUX

Genmab A/S

12/06/2024

10:15:32 AM

1,842.0000

11

AQEU

Genmab A/S

12/06/2024

10:15:32 AM

1,842.0000

11

TQEX

Genmab A/S

12/06/2024

10:15:32 AM

1,841.0000

49

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,841.0000

48

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,841.0000

1

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,841.0000

30

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

45

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

5

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

42

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

11

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

3

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

42

XCSE

Genmab A/S

12/06/2024

10:15:32 AM

1,840.5000

23

XCSE

Genmab A/S

12/06/2024

10:18:41 AM

1,841.0000

6

CEUX

Genmab A/S

12/06/2024

10:19:49 AM

1,842.5000

35

XCSE

107


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:20:07 AM

1,842.0000

22

CEUX

Genmab A/S

12/06/2024

10:20:15 AM

1,842.5000

38

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

9

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

5

TQEX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

5

TQEX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

41

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

8

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

1

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

9

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

2

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

5

TQEX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

6

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

1

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

2

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

7

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

3

CEUX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

5

TQEX

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

1

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

21

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

22

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

22

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

22

XCSE

Genmab A/S

12/06/2024

10:20:19 AM

1,841.0000

2

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

44

CEUX

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

48

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

45

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

13

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

32

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

9

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

1

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

1

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

9

XCSE

Genmab A/S

12/06/2024

10:22:31 AM

1,840.0000

13

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

13

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

1

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

8

XCSE

108


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

5

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

2

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

13

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

7

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

1

XCSE

Genmab A/S

12/06/2024

10:24:21 AM

1,839.0000

1

XCSE

Genmab A/S

12/06/2024

10:25:25 AM

1,839.0000

50

CEUX

Genmab A/S

12/06/2024

10:25:25 AM

1,839.0000

8

TQEX

Genmab A/S

12/06/2024

10:25:25 AM

1,839.0000

56

XCSE

Genmab A/S

12/06/2024

10:25:25 AM

1,839.0000

5

CEUX

Genmab A/S

12/06/2024

10:25:25 AM

1,839.0000

2

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

13

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

13

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

13

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

43

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

4

XCSE

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

13

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

2

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

1

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

10

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

3

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

11

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

2

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

13

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

2

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

30

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

30

CEUX

Genmab A/S

12/06/2024

10:27:17 AM

1,840.0000

18

CEUX

Genmab A/S

12/06/2024

10:29:52 AM

1,839.0000

74

XCSE

Genmab A/S

12/06/2024

10:29:52 AM

1,839.0000

10

AQEU

Genmab A/S

12/06/2024

10:29:52 AM

1,839.0000

66

CEUX

Genmab A/S

12/06/2024

10:29:52 AM

1,839.0000

10

TQEX

Genmab A/S

12/06/2024

10:30:00 AM

1,838.5000

43

CEUX

Genmab A/S

12/06/2024

10:31:29 AM

1,838.5000

20

XCSE

Genmab A/S

12/06/2024

10:32:15 AM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

10:32:18 AM

1,839.0000

1

AQEU

Genmab A/S

12/06/2024

10:32:23 AM

1,839.5000

20

AQEU

Genmab A/S

12/06/2024

10:32:27 AM

1,840.0000

34

XCSE

109


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

102

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

5

TQEX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

5

TQEX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

5

TQEX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

5

TQEX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

5

TQEX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

7

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

XCSE

110


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

10

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

1

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

3

TQEX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

8

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

6

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

16

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

9

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

16

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

25

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

25

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

25

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

25

CEUX

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

14

XCSE

Genmab A/S

12/06/2024

10:33:46 AM

1,842.0000

11

CEUX

Genmab A/S

12/06/2024

10:33:53 AM

1,838.5000

45

XCSE

Genmab A/S

12/06/2024

10:33:53 AM

1,838.5000

10

XCSE

Genmab A/S

12/06/2024

10:33:53 AM

1,838.5000

45

XCSE

Genmab A/S

12/06/2024

10:33:53 AM

1,838.5000

45

XCSE

Genmab A/S

12/06/2024

10:33:53 AM

1,838.5000

4

XCSE

Genmab A/S

12/06/2024

10:33:53 AM

1,838.5000

3

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.5000

65

CEUX

Genmab A/S

12/06/2024

10:39:10 AM

1,833.5000

9

AQEU

Genmab A/S

12/06/2024

10:39:10 AM

1,833.5000

10

TQEX

Genmab A/S

12/06/2024

10:39:10 AM

1,833.5000

30

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.5000

41

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

83

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

40

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

40

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

1

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

3

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

2

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

1

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

1

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

1

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

32

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

1

XCSE

Genmab A/S

12/06/2024

10:39:10 AM

1,833.0000

29

CEUX

Genmab A/S

12/06/2024

10:42:23 AM

1,829.0000

8

XCSE

Genmab A/S

12/06/2024

10:42:23 AM

1,829.0000

28

XCSE

Genmab A/S

12/06/2024

10:42:23 AM

1,829.0000

8

CEUX

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

8

CEUX

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

8

XCSE

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

8

XCSE

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

8

CEUX

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

8

CEUX

111


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:43:20 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

33

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

1

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

8

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

18

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

6

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

18

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

10

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

2

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

2

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

2

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

2

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

2

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

9

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

3

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

3

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.0000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

5

TQEX

Genmab A/S

12/06/2024

10:44:13 AM

1,834.5000

33

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

18

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

8

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

18

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

10

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.0000

22

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.0000

22

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.0000

14

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

9

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

2

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

36

CEUX

Genmab A/S

12/06/2024

10:44:13 AM

1,833.5000

1

AQEU

Genmab A/S

12/06/2024

10:44:13 AM

1,833.0000

20

CEUX

112


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:44:13 AM

1,833.0000

3

XCSE

Genmab A/S

12/06/2024

10:44:13 AM

1,833.0000

1

XCSE

Genmab A/S

12/06/2024

10:45:50 AM

1,833.0000

105

XCSE

Genmab A/S

12/06/2024

10:45:50 AM

1,833.0000

94

CEUX

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

19

XCSE

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

2

AQEU

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

19

CEUX

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

19

CEUX

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

19

CEUX

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

2

AQEU

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

5

TQEX

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

19

XCSE

Genmab A/S

12/06/2024

10:46:22 AM

1,833.0000

34

XCSE

Genmab A/S

12/06/2024

10:46:23 AM

1,833.0000

45

XCSE

Genmab A/S

12/06/2024

10:46:23 AM

1,833.0000

36

CEUX

Genmab A/S

12/06/2024

10:46:23 AM

1,833.0000

8

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

69

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

62

CEUX

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

9

AQEU

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

10

TQEX

Genmab A/S

12/06/2024

10:50:37 AM

1,830.5000

47

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,830.5000

4

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,830.5000

43

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,830.5000

1

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,830.5000

46

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,830.5000

9

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

8

AQEU

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

2

AQEU

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

9

TQEX

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

2

TQEX

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

15

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

50

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

2

AQEU

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

51

XCSE

Genmab A/S

12/06/2024

10:50:37 AM

1,831.0000

17

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,829.5000

45

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

52

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

42

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

45

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

7

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

38

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

4

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

18

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

34

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,830.0000

6

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,829.5000

1

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,829.5000

44

XCSE

Genmab A/S

12/06/2024

10:53:01 AM

1,829.5000

34

XCSE

Genmab A/S

12/06/2024

10:54:03 AM

1,827.5000

51

XCSE

113


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

10:54:03 AM

1,827.5000

24

XCSE

Genmab A/S

12/06/2024

10:54:03 AM

1,827.5000

27

XCSE

Genmab A/S

12/06/2024

10:57:01 AM

1,823.5000

33

XCSE

Genmab A/S

12/06/2024

10:57:01 AM

1,823.5000

12

XCSE

Genmab A/S

12/06/2024

10:57:01 AM

1,823.5000

6

XCSE

Genmab A/S

12/06/2024

10:57:05 AM

1,823.5000

45

XCSE

Genmab A/S

12/06/2024

10:57:05 AM

1,823.5000

19

XCSE

Genmab A/S

12/06/2024

10:59:18 AM

1,824.0000

146

XCSE

Genmab A/S

12/06/2024

10:59:18 AM

1,824.0000

114

CEUX

Genmab A/S

12/06/2024

10:59:18 AM

1,824.0000

17

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

20

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

20

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

3

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

21

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

21

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

1

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

5

TQEX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

8

TQEX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

4

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

5

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

1

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

2

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

41

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

2

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

43

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

1

XCSE

Genmab A/S

12/06/2024

11:00:11 AM

1,823.0000

26

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

25

CEUX

Genmab A/S

12/06/2024

11:00:11 AM

1,822.5000

18

XCSE

Genmab A/S

12/06/2024

11:03:54 AM

1,822.0000

37

XCSE

Genmab A/S

12/06/2024

11:03:54 AM

1,822.0000

13

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.5000

2

CEUX

Genmab A/S

12/06/2024

11:04:07 AM

1,821.5000

77

CEUX

Genmab A/S

12/06/2024

11:04:07 AM

1,821.0000

39

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.0000

11

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.5000

51

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.5000

52

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.5000

30

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.0000

1

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.0000

1

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.0000

48

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,821.0000

30

XCSE

Genmab A/S

12/06/2024

11:04:07 AM

1,820.5000

82

CEUX

Genmab A/S

12/06/2024

11:04:32 AM

1,814.0000

10

XCSE

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

12

XCSE

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

12

XCSE

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

12

XCSE

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

12

XCSE

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

XCSE

114


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

11

CEUX

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

11

CEUX

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

11

CEUX

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

4

CEUX

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

8

CEUX

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.5000

2

AQEU

Genmab A/S

12/06/2024

11:09:36 AM

1,823.0000

7

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,822.5000

41

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

1

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

41

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

48

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

42

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

6

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

42

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

37

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.5000

17

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

1

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

18

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

18

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

19

CEUX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

2

AQEU

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

9

AQEU

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

5

TQEX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

1

AQEU

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

19

CEUX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

1

XCSE

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

5

CEUX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

1

AQEU

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

15

AQEU

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

5

TQEX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

5

TQEX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

21

TQEX

115


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

5

TQEX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

19

TQEX

Genmab A/S

12/06/2024

11:09:47 AM

1,821.0000

8

TQEX

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

2

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

48

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

48

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

1

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

1

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

6

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

3

XCSE

Genmab A/S

12/06/2024

11:13:45 AM

1,822.0000

9

XCSE

Genmab A/S

12/06/2024

11:15:00 AM

1,820.5000

7

XCSE

Genmab A/S

12/06/2024

11:15:00 AM

1,820.5000

50

XCSE

Genmab A/S

12/06/2024

11:15:00 AM

1,820.5000

50

CEUX

Genmab A/S

12/06/2024

11:15:00 AM

1,820.5000

2

CEUX

Genmab A/S

12/06/2024

11:15:00 AM

1,820.5000

8

AQEU

Genmab A/S

12/06/2024

11:15:00 AM

1,820.5000

8

TQEX

Genmab A/S

12/06/2024

11:15:01 AM

1,819.5000

50

XCSE

Genmab A/S

12/06/2024

11:15:01 AM

1,819.5000

50

XCSE

Genmab A/S

12/06/2024

11:15:01 AM

1,819.5000

19

XCSE

Genmab A/S

12/06/2024

11:17:53 AM

1,819.5000

15

XCSE

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

39

CEUX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

2

CEUX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

27

CEUX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

6

AQEU

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

6

AQEU

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

6

TQEX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

1

TQEX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

6

TQEX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

10

XCSE

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

34

XCSE

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

4

XCSE

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

27

XCSE

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

16

CEUX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

23

CEUX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

5

CEUX

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

6

AQEU

Genmab A/S

12/06/2024

11:18:15 AM

1,820.0000

15

XCSE

Genmab A/S

12/06/2024

11:20:57 AM

1,822.0000

3

CEUX

Genmab A/S

12/06/2024

11:20:57 AM

1,822.0000

4

CEUX

Genmab A/S

12/06/2024

11:20:57 AM

1,822.0000

9

AQEU

Genmab A/S

12/06/2024

11:20:57 AM

1,822.0000

2

AQEU

Genmab A/S

12/06/2024

11:20:57 AM

1,822.0000

20

AQEU

Genmab A/S

12/06/2024

11:21:20 AM

1,822.0000

33

CEUX

Genmab A/S

12/06/2024

11:21:37 AM

1,822.0000

40

CEUX

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

50

XCSE

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

48

XCSE

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

45

CEUX

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

45

CEUX

116


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

1

CEUX

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

7

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

5

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

2

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

2

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

5

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

2

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

7

TQEX

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

7

TQEX

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

5

TQEX

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

9

AQEU

Genmab A/S

12/06/2024

11:21:37 AM

1,821.0000

38

CEUX

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

48

XCSE

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

30

XCSE

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

1

XCSE

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

1

XCSE

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

1

XCSE

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

43

CEUX

Genmab A/S

12/06/2024

11:21:38 AM

1,820.0000

19

XCSE

Genmab A/S

12/06/2024

11:21:39 AM

1,820.0000

43

CEUX

Genmab A/S

12/06/2024

11:25:04 AM

1,820.5000

19

XCSE

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

2

XCSE

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

1

XCSE

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

37

XCSE

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

1

XCSE

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

25

CEUX

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

6

CEUX

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

10

TQEX

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

2

TQEX

Genmab A/S

12/06/2024

11:25:09 AM

1,820.0000

10

XCSE

Genmab A/S

12/06/2024

11:27:56 AM

1,822.5000

35

CEUX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

41

CEUX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

27

CEUX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

7

CEUX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

27

CEUX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

13

CEUX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

6

AQEU

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

6

TQEX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

6

TQEX

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

44

XCSE

Genmab A/S

12/06/2024

11:27:56 AM

1,822.0000

44

XCSE

Genmab A/S

12/06/2024

11:27:56 AM

1,821.5000

37

XCSE

Genmab A/S

12/06/2024

11:27:56 AM

1,821.5000

34

XCSE

Genmab A/S

12/06/2024

11:30:18 AM

1,822.0000

55

CEUX

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

39

XCSE

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

4

XCSE

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

35

XCSE

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

117


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

5

AQEU

Genmab A/S

12/06/2024

11:30:47 AM

1,822.5000

3

AQEU

Genmab A/S

12/06/2024

11:31:05 AM

1,822.5000

23

XCSE

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

5

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

16

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

16

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

5

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

5

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

6

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

1

CEUX

Genmab A/S

12/06/2024

11:32:16 AM

1,822.5000

5

CEUX

Genmab A/S

12/06/2024

11:34:19 AM

1,828.5000

19

CEUX

Genmab A/S

12/06/2024

11:34:45 AM

1,830.0000

39

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

18

XCSE

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

17

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

17

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

17

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

17

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

14

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

5

TQEX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

5

TQEX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

7

TQEX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

2

AQEU

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

10

XCSE

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

17

CEUX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

2

AQEU

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

5

TQEX

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

8

XCSE

Genmab A/S

12/06/2024

11:34:46 AM

1,829.5000

2

XCSE

Genmab A/S

12/06/2024

11:34:48 AM

1,829.5000

18

XCSE

Genmab A/S

12/06/2024

11:34:56 AM

1,828.5000

54

XCSE

Genmab A/S

12/06/2024

11:34:56 AM

1,828.5000

49

CEUX

Genmab A/S

12/06/2024

11:34:56 AM

1,828.5000

7

AQEU

Genmab A/S

12/06/2024

11:34:56 AM

1,828.5000

8

TQEX

Genmab A/S

12/06/2024

11:36:06 AM

1,826.0000

47

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,826.0000

47

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,826.0000

18

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,826.5000

43

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,826.5000

43

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,826.5000

23

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

6

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

4

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

27

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

35

XCSE

118


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

24

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

18

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

18

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

24

XCSE

Genmab A/S

12/06/2024

11:36:06 AM

1,825.5000

18

XCSE

Genmab A/S

12/06/2024

11:40:44 AM

1,827.5000

58

XCSE

Genmab A/S

12/06/2024

11:40:44 AM

1,827.5000

52

CEUX

Genmab A/S

12/06/2024

11:40:44 AM

1,827.5000

9

TQEX

Genmab A/S

12/06/2024

11:43:22 AM

1,831.5000

18

XCSE

Genmab A/S

12/06/2024

11:43:53 AM

1,835.5000

11

CEUX

Genmab A/S

12/06/2024

11:43:53 AM

1,835.5000

8

CEUX

Genmab A/S

12/06/2024

11:43:53 AM

1,835.5000

19

CEUX

Genmab A/S

12/06/2024

11:44:02 AM

1,834.0000

89

CEUX

Genmab A/S

12/06/2024

11:44:02 AM

1,834.0000

13

AQEU

Genmab A/S

12/06/2024

11:44:02 AM

1,834.0000

4

TQEX

Genmab A/S

12/06/2024

11:44:02 AM

1,834.0000

9

TQEX

Genmab A/S

12/06/2024

11:44:02 AM

1,834.0000

98

XCSE

Genmab A/S

12/06/2024

11:44:02 AM

1,833.0000

46

XCSE

Genmab A/S

12/06/2024

11:44:02 AM

1,833.0000

46

XCSE

Genmab A/S

12/06/2024

11:44:02 AM

1,833.0000

46

XCSE

Genmab A/S

12/06/2024

11:44:02 AM

1,833.0000

29

XCSE

Genmab A/S

12/06/2024

11:44:02 AM

1,833.0000

16

CEUX

Genmab A/S

12/06/2024

11:45:54 AM

1,830.5000

24

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.5000

21

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.0000

47

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.0000

47

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.0000

3

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.5000

38

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.5000

35

XCSE

Genmab A/S

12/06/2024

11:45:54 AM

1,830.5000

31

XCSE

Genmab A/S

12/06/2024

11:50:09 AM

1,830.5000

22

CEUX

Genmab A/S

12/06/2024

11:50:09 AM

1,830.5000

22

CEUX

Genmab A/S

12/06/2024

11:50:09 AM

1,830.5000

7

AQEU

Genmab A/S

12/06/2024

11:50:09 AM

1,830.5000

7

TQEX

Genmab A/S

12/06/2024

11:50:09 AM

1,830.5000

8

AQEU

Genmab A/S

12/06/2024

11:50:09 AM

1,830.5000

36

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

7

TQEX

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

7

TQEX

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

48

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

47

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

7

AQEU

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

7

AQEU

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

52

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,832.0000

51

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

17

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

17

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

17

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

2

AQEU

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

5

TQEX

119


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

51

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

47

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

16

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

51

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

47

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

16

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

2

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

13

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

40

XCSE

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

10

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

8

CEUX

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

5

AQEU

Genmab A/S

12/06/2024

11:52:21 AM

1,829.0000

3

AQEU

Genmab A/S

12/06/2024

11:58:06 AM

1,830.0000

1

XCSE

Genmab A/S

12/06/2024

11:58:06 AM

1,830.0000

1

XCSE

Genmab A/S

12/06/2024

11:58:13 AM

1,830.0000

11

XCSE

Genmab A/S

12/06/2024

11:58:49 AM

1,830.0000

11

XCSE

Genmab A/S

12/06/2024

11:59:30 AM

1,831.5000

11

XCSE

Genmab A/S

12/06/2024

11:59:45 AM

1,831.5000

39

XCSE

Genmab A/S

12/06/2024

12:00:01 PM

1,830.5000

116

CEUX

Genmab A/S

12/06/2024

12:00:01 PM

1,830.5000

17

AQEU

Genmab A/S

12/06/2024

12:00:01 PM

1,830.5000

17

TQEX

Genmab A/S

12/06/2024

12:00:01 PM

1,830.5000

96

XCSE

Genmab A/S

12/06/2024

12:00:01 PM

1,830.5000

33

XCSE

Genmab A/S

12/06/2024

12:00:49 PM

1,828.5000

29

XCSE

Genmab A/S

12/06/2024

12:00:49 PM

1,828.5000

16

XCSE

Genmab A/S

12/06/2024

12:00:49 PM

1,828.5000

45

XCSE

Genmab A/S

12/06/2024

12:00:49 PM

1,828.5000

21

XCSE

Genmab A/S

12/06/2024

12:00:49 PM

1,828.5000

36

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

35

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

6

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

1

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

1

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

23

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

19

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

31

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

42

XCSE

Genmab A/S

12/06/2024

12:00:53 PM

1,827.0000

1

XCSE

Genmab A/S

12/06/2024

12:06:26 PM

1,829.5000

8

AQEU

Genmab A/S

12/06/2024

12:06:26 PM

1,829.5000

2

AQEU

Genmab A/S

12/06/2024

12:06:26 PM

1,829.5000

18

XCSE

Genmab A/S

12/06/2024

12:06:32 PM

1,828.5000

25

XCSE

Genmab A/S

12/06/2024

12:06:32 PM

1,828.5000

61

CEUX

Genmab A/S

12/06/2024

12:06:32 PM

1,828.5000

9

AQEU

Genmab A/S

12/06/2024

12:06:32 PM

1,828.5000

5

XCSE

Genmab A/S

12/06/2024

12:07:49 PM

1,835.0000

35

XCSE

Genmab A/S

12/06/2024

12:07:57 PM

1,834.5000

13

CEUX

Genmab A/S

12/06/2024

12:07:57 PM

1,834.5000

13

CEUX

Genmab A/S

12/06/2024

12:07:57 PM

1,834.5000

2

CEUX

120


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

12:07:57 PM

1,834.5000

11

XCSE

Genmab A/S

12/06/2024

12:07:57 PM

1,834.5000

2

XCSE

Genmab A/S

12/06/2024

12:07:57 PM

1,834.5000

11

XCSE

Genmab A/S

12/06/2024

12:07:58 PM

1,834.5000

13

CEUX

Genmab A/S

12/06/2024

12:07:58 PM

1,834.5000

13

CEUX

Genmab A/S

12/06/2024

12:07:58 PM

1,834.5000

2

XCSE

Genmab A/S

12/06/2024

12:08:06 PM

1,834.0000

48

XCSE

Genmab A/S

12/06/2024

12:08:09 PM

1,834.0000

19

XCSE

Genmab A/S

12/06/2024

12:08:09 PM

1,834.0000

61

CEUX

Genmab A/S

12/06/2024

12:08:09 PM

1,834.0000

9

AQEU

Genmab A/S

12/06/2024

12:10:20 PM

1,835.0000

17

XCSE

Genmab A/S

12/06/2024

12:10:20 PM

1,835.0000

7

XCSE

Genmab A/S

12/06/2024

12:10:38 PM

1,835.0000

39

XCSE

Genmab A/S

12/06/2024

12:11:04 PM

1,836.0000

17

XCSE

Genmab A/S

12/06/2024

12:11:04 PM

1,836.0000

18

XCSE

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

9

XCSE

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

10

CEUX

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

5

TQEX

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

5

TQEX

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

1

CEUX

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

9

XCSE

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

16

XCSE

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

9

CEUX

Genmab A/S

12/06/2024

12:11:22 PM

1,835.0000

5

TQEX

Genmab A/S

12/06/2024

12:11:27 PM

1,834.5000

9

XCSE

Genmab A/S

12/06/2024

12:11:27 PM

1,834.5000

5

TQEX

Genmab A/S

12/06/2024

12:11:27 PM

1,834.5000

1

XCSE

Genmab A/S

12/06/2024

12:12:21 PM

1,835.0000

36

CEUX

Genmab A/S

12/06/2024

12:12:47 PM

1,837.0000

10

XCSE

Genmab A/S

12/06/2024

12:12:47 PM

1,837.0000

5

XCSE

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

10

CEUX

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

11

XCSE

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

12

XCSE

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

11

XCSE

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

35

XCSE

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

11

XCSE

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

10

CEUX

Genmab A/S

12/06/2024

12:12:52 PM

1,836.5000

10

CEUX

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

47

XCSE

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

6

AQEU

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

42

CEUX

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

42

CEUX

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

23

CEUX

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

6

AQEU

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

6

AQEU

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

6

AQEU

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

6

AQEU

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

6

AQEU

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

47

XCSE

121


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

24

XCSE

Genmab A/S

12/06/2024

12:12:58 PM

1,836.0000

7

CEUX

Genmab A/S

12/06/2024

12:14:41 PM

1,836.0000

47

XCSE

Genmab A/S

12/06/2024

12:14:41 PM

1,836.0000

47

XCSE

Genmab A/S

12/06/2024

12:14:41 PM

1,836.0000

3

XCSE

Genmab A/S

12/06/2024

12:14:41 PM

1,836.0000

44

XCSE

Genmab A/S

12/06/2024

12:14:41 PM

1,836.0000

3

XCSE

Genmab A/S

12/06/2024

12:14:41 PM

1,836.0000

10

XCSE

Genmab A/S

12/06/2024

12:16:39 PM

1,834.0000

43

XCSE

Genmab A/S

12/06/2024

12:16:39 PM

1,834.0000

113

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

49

CEUX

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

49

CEUX

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

14

CEUX

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

10

CEUX

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

1

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

3

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

32

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

53

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

1

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

52

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,835.0000

29

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,833.5000

49

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,833.5000

49

XCSE

Genmab A/S

12/06/2024

12:20:43 PM

1,833.5000

23

XCSE

Genmab A/S

12/06/2024

12:25:24 PM

1,839.0000

39

XCSE

Genmab A/S

12/06/2024

12:25:47 PM

1,840.5000

38

XCSE

Genmab A/S

12/06/2024

12:25:54 PM

1,840.0000

67

XCSE

Genmab A/S

12/06/2024

12:25:54 PM

1,840.0000

67

XCSE

Genmab A/S

12/06/2024

12:25:54 PM

1,840.0000

18

XCSE

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

XCSE

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

XCSE

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

CEUX

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

CEUX

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

CEUX

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

CEUX

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

10

CEUX

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

2

AQEU

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

11

XCSE

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

26

XCSE

Genmab A/S

12/06/2024

12:27:30 PM

1,839.0000

25

CEUX

Genmab A/S

12/06/2024

12:29:55 PM

1,839.0000

23

XCSE

Genmab A/S

12/06/2024

12:29:55 PM

1,839.0000

97

XCSE

122


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

12:29:55 PM

1,839.0000

23

XCSE

Genmab A/S

12/06/2024

12:29:55 PM

1,839.0000

4

XCSE

Genmab A/S

12/06/2024

12:31:20 PM

1,838.0000

11

XCSE

Genmab A/S

12/06/2024

12:31:32 PM

1,838.0000

6

XCSE

Genmab A/S

12/06/2024

12:31:39 PM

1,838.0000

7

XCSE

Genmab A/S

12/06/2024

12:32:26 PM

1,839.0000

35

CEUX

Genmab A/S

12/06/2024

12:32:26 PM

1,839.0000

4

CEUX

Genmab A/S

12/06/2024

12:32:59 PM

1,839.0000

16

XCSE

Genmab A/S

12/06/2024

12:33:43 PM

1,839.5000

35

XCSE

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

45

CEUX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

45

CEUX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

1

CEUX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

7

AQEU

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

7

AQEU

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

7

AQEU

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

8

AQEU

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

7

TQEX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

7

TQEX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

2

TQEX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

7

TQEX

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

51

XCSE

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

46

XCSE

Genmab A/S

12/06/2024

12:33:44 PM

1,838.5000

21

XCSE

Genmab A/S

12/06/2024

12:33:44 PM

1,838.5000

21

XCSE

Genmab A/S

12/06/2024

12:33:44 PM

1,839.0000

36

CEUX

Genmab A/S

12/06/2024

12:36:59 PM

1,840.5000

62

XCSE

Genmab A/S

12/06/2024

12:36:59 PM

1,840.5000

9

CEUX

Genmab A/S

12/06/2024

12:37:02 PM

1,840.5000

10

XCSE

Genmab A/S

12/06/2024

12:37:02 PM

1,840.5000

45

XCSE

Genmab A/S

12/06/2024

12:38:46 PM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

12:40:05 PM

1,841.0000

34

XCSE

Genmab A/S

12/06/2024

12:40:05 PM

1,841.0000

24

CEUX

Genmab A/S

12/06/2024

12:40:28 PM

1,843.0000

5

XCSE

Genmab A/S

12/06/2024

12:40:38 PM

1,843.5000

9

XCSE

Genmab A/S

12/06/2024

12:41:24 PM

1,844.0000

51

XCSE

Genmab A/S

12/06/2024

12:41:24 PM

1,844.0000

51

XCSE

Genmab A/S

12/06/2024

12:41:24 PM

1,844.0000

9

XCSE

Genmab A/S

12/06/2024

12:41:24 PM

1,844.0000

9

XCSE

Genmab A/S

12/06/2024

12:41:24 PM

1,843.5000

21

TQEX

Genmab A/S

12/06/2024

12:41:24 PM

1,843.5000

151

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

44

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

15

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

8

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

19

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

37

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

7

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

42

XCSE

Genmab A/S

12/06/2024

12:42:02 PM

1,845.5000

14

XCSE

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

36

XCSE

123


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

17

XCSE

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

17

XCSE

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

36

XCSE

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

3

XCSE

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

14

XCSE

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

17

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

17

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

8

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

9

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

8

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

17

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

4

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

41

CEUX

Genmab A/S

12/06/2024

12:43:43 PM

1,843.0000

24

CEUX

Genmab A/S

12/06/2024

12:49:30 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:49:30 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

12:49:43 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:49:43 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

12:49:48 PM

1,842.0000

8

AQEU

Genmab A/S

12/06/2024

12:49:48 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:49:55 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:49:55 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

12:49:55 PM

1,842.0000

20

AQEU

Genmab A/S

12/06/2024

12:50:18 PM

1,842.0000

8

AQEU

Genmab A/S

12/06/2024

12:50:18 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:50:26 PM

1,842.0000

8

AQEU

Genmab A/S

12/06/2024

12:50:26 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:50:49 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:50:49 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

12:50:55 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

12:50:55 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:50:59 PM

1,842.0000

8

AQEU

Genmab A/S

12/06/2024

12:50:59 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:51:04 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

12:51:04 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:51:04 PM

1,842.0000

24

XCSE

Genmab A/S

12/06/2024

12:51:19 PM

1,842.0000

8

AQEU

Genmab A/S

12/06/2024

12:51:19 PM

1,842.0000

2

AQEU

Genmab A/S

12/06/2024

12:51:19 PM

1,842.0000

26

XCSE

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

42

XCSE

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

5

CEUX

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

32

CEUX

124


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

22

CEUX

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

37

CEUX

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

1

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

6

TQEX

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

42

XCSE

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

20

XCSE

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

2

AQEU

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

2

TQEX

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

11

XCSE

Genmab A/S

12/06/2024

12:51:30 PM

1,841.5000

24

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

8

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,840.5000

42

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,840.5000

42

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,840.5000

42

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,840.5000

42

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,840.5000

4

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

38

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

35

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

26

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

16

XCSE

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

3

AQEU

Genmab A/S

12/06/2024

12:52:41 PM

1,841.0000

1

AQEU

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

43

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

1

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

1

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,836.5000

20

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,836.5000

1

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,836.5000

1

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

43

XCSE

125


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

27

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

43

XCSE

Genmab A/S

12/06/2024

12:54:02 PM

1,837.0000

12

XCSE

Genmab A/S

12/06/2024

1:00:19 PM

1,842.0000

56

CEUX

Genmab A/S

12/06/2024

1:00:19 PM

1,842.0000

40

CEUX

Genmab A/S

12/06/2024

1:00:19 PM

1,842.0000

9

TQEX

Genmab A/S

12/06/2024

1:00:19 PM

1,842.0000

9

TQEX

Genmab A/S

12/06/2024

1:00:19 PM

1,842.0000

1

TQEX

Genmab A/S

12/06/2024

1:00:19 PM

1,842.0000

26

CEUX

Genmab A/S

12/06/2024

1:02:50 PM

1,842.0000

64

CEUX

Genmab A/S

12/06/2024

1:02:50 PM

1,842.0000

9

AQEU

Genmab A/S

12/06/2024

1:02:50 PM

1,842.0000

10

TQEX

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

22

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,842.0000

63

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,842.0000

7

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

22

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

22

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

22

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

22

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

22

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

1

XCSE

Genmab A/S

12/06/2024

1:02:50 PM

1,841.5000

17

XCSE

Genmab A/S

12/06/2024

1:07:04 PM

1,844.0000

33

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,845.0000

39

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,845.0000

27

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

61

CEUX

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

61

CEUX

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

67

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

67

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

67

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

3

XCSE

Genmab A/S

12/06/2024

1:07:55 PM

1,844.5000

61

CEUX

Genmab A/S

12/06/2024

1:07:58 PM

1,842.0000

29

XCSE

Genmab A/S

12/06/2024

1:07:58 PM

1,842.0000

8

XCSE

Genmab A/S

12/06/2024

1:13:21 PM

1,837.0000

21

XCSE

Genmab A/S

12/06/2024

1:13:21 PM

1,837.0000

21

XCSE

Genmab A/S

12/06/2024

1:14:25 PM

1,837.0000

46

XCSE

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

18

CEUX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

23

CEUX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

18

CEUX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

41

CEUX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

6

AQEU

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

6

AQEU

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

13

CEUX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

6

AQEU

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

6

AQEU

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

7

TQEX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

7

TQEX

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

46

XCSE

126


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

21

XCSE

Genmab A/S

12/06/2024

1:14:26 PM

1,837.0000

12

XCSE

Genmab A/S

12/06/2024

1:15:43 PM

1,838.0000

11

CEUX

Genmab A/S

12/06/2024

1:15:43 PM

1,838.0000

12

XCSE

Genmab A/S

12/06/2024

1:15:43 PM

1,838.0000

12

XCSE

Genmab A/S

12/06/2024

1:15:43 PM

1,838.0000

6

XCSE

Genmab A/S

12/06/2024

1:15:44 PM

1,838.0000

11

CEUX

Genmab A/S

12/06/2024

1:15:44 PM

1,838.0000

12

XCSE

Genmab A/S

12/06/2024

1:16:18 PM

1,838.0000

30

CEUX

Genmab A/S

12/06/2024

1:16:18 PM

1,838.0000

13

CEUX

Genmab A/S

12/06/2024

1:18:05 PM

1,840.0000

39

XCSE

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

9

CEUX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

1

AQEU

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

5

TQEX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

38

XCSE

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

8

XCSE

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

9

CEUX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

9

CEUX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

1

CEUX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

5

TQEX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

9

CEUX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

9

CEUX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

5

TQEX

Genmab A/S

12/06/2024

1:18:20 PM

1,839.5000

8

XCSE

Genmab A/S

12/06/2024

1:18:46 PM

1,839.5000

2

XCSE

Genmab A/S

12/06/2024

1:18:46 PM

1,839.5000

13

XCSE

Genmab A/S

12/06/2024

1:19:13 PM

1,839.5000

6

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

29

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

24

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

22

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

5

XCSE

Genmab A/S

12/06/2024

1:19:39 PM

1,839.0000

44

XCSE

Genmab A/S

12/06/2024

1:22:12 PM

1,838.5000

9

AQEU

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

8

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

8

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

1

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

4

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

4

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

8

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

8

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

5

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

1

AQEU

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

5

TQEX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

36

CEUX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

5

TQEX

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

7

XCSE

Genmab A/S

12/06/2024

1:22:29 PM

1,837.5000

42

XCSE

127


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

1:23:59 PM

1,841.5000

9

XCSE

Genmab A/S

12/06/2024

1:23:59 PM

1,841.5000

29

XCSE

Genmab A/S

12/06/2024

1:24:01 PM

1,841.0000

55

XCSE

Genmab A/S

12/06/2024

1:24:01 PM

1,841.0000

33

XCSE

Genmab A/S

12/06/2024

1:24:01 PM

1,841.0000

79

CEUX

Genmab A/S

12/06/2024

1:24:01 PM

1,841.0000

11

AQEU

Genmab A/S

12/06/2024

1:24:01 PM

1,841.0000

13

TQEX

Genmab A/S

12/06/2024

1:27:22 PM

1,840.0000

6

CEUX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

2

XCSE

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

80

XCSE

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

51

XCSE

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

67

CEUX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

45

CEUX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

20

CEUX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

11

AQEU

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

7

AQEU

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

7

AQEU

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

7

TQEX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

11

TQEX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

11

TQEX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

7

TQEX

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

21

XCSE

Genmab A/S

12/06/2024

1:28:01 PM

1,840.0000

7

TQEX

Genmab A/S

12/06/2024

1:28:02 PM

1,840.0000

42

XCSE

Genmab A/S

12/06/2024

1:32:46 PM

1,840.5000

46

XCSE

Genmab A/S

12/06/2024

1:32:55 PM

1,840.5000

46

XCSE

Genmab A/S

12/06/2024

1:32:55 PM

1,840.5000

24

XCSE

Genmab A/S

12/06/2024

1:33:03 PM

1,840.5000

5

CEUX

Genmab A/S

12/06/2024

1:33:06 PM

1,840.5000

24

XCSE

Genmab A/S

12/06/2024

1:33:06 PM

1,840.5000

4

XCSE

Genmab A/S

12/06/2024

1:33:16 PM

1,840.5000

19

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

52

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

23

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

23

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

29

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

23

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

23

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

1

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

29

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

17

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

6

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

17

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

27

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

8

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

46

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

27

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

46

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

4

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

46

CEUX

128


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

8

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

10

CEUX

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

7

AQEU

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

7

AQEU

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

7

AQEU

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

7

AQEU

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

7

AQEU

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

7

AQEU

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

6

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

26

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

3

XCSE

Genmab A/S

12/06/2024

1:34:14 PM

1,840.5000

1

CEUX

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

17

CEUX

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

5

TQEX

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

18

XCSE

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

34

XCSE

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

49

XCSE

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

18

XCSE

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

49

XCSE

Genmab A/S

12/06/2024

1:36:07 PM

1,839.0000

17

CEUX

Genmab A/S

12/06/2024

1:41:58 PM

1,841.0000

9

CEUX

Genmab A/S

12/06/2024

1:41:58 PM

1,841.0000

9

CEUX

Genmab A/S

12/06/2024

1:41:58 PM

1,841.0000

9

CEUX

Genmab A/S

12/06/2024

1:41:58 PM

1,841.0000

4

CEUX

Genmab A/S

12/06/2024

1:41:58 PM

1,841.0000

1

AQEU

Genmab A/S

12/06/2024

1:41:58 PM

1,841.0000

5

TQEX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

9

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

3

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

1

AQEU

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

5

TQEX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

36

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

8

AQEU

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

2

AQEU

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

16

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

7

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

23

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

23

CEUX

Genmab A/S

12/06/2024

1:42:23 PM

1,841.0000

5

CEUX

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

12

CEUX

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

21

CEUX

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

12

CEUX

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

33

CEUX

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

22

CEUX

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

5

AQEU

Genmab A/S

12/06/2024

1:43:21 PM

1,840.5000

36

XCSE

Genmab A/S

12/06/2024

1:43:59 PM

1,840.5000

14

CEUX

Genmab A/S

12/06/2024

1:44:02 PM

1,840.5000

3

XCSE

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

29

XCSE

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

7

XCSE

129


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

16

XCSE

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

97

XCSE

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

27

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

16

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

3

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

3

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

2

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

4

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

1

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

1

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

4

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

5

TQEX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

16

CEUX

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,839.5000

44

XCSE

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

8

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

2

AQEU

Genmab A/S

12/06/2024

1:44:40 PM

1,840.0000

10

CEUX

Genmab A/S

12/06/2024

1:44:52 PM

1,837.5000

40

XCSE

Genmab A/S

12/06/2024

1:49:55 PM

1,837.5000

6

TQEX

Genmab A/S

12/06/2024

1:49:55 PM

1,837.5000

37

CEUX

Genmab A/S

12/06/2024

1:49:55 PM

1,837.5000

6

TQEX

Genmab A/S

12/06/2024

1:49:55 PM

1,837.5000

6

TQEX

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

8

XCSE

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

8

XCSE

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

8

XCSE

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

7

XCSE

130


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

1

XCSE

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

1

XCSE

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

9

CEUX

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

9

CEUX

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

5

TQEX

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

5

TQEX

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

9

CEUX

Genmab A/S

12/06/2024

1:50:46 PM

1,837.0000

6

CEUX

Genmab A/S

12/06/2024

1:51:31 PM

1,838.0000

29

CEUX

Genmab A/S

12/06/2024

1:51:31 PM

1,838.0000

16

CEUX

Genmab A/S

12/06/2024

1:51:43 PM

1,837.0000

24

CEUX

Genmab A/S

12/06/2024

1:51:43 PM

1,837.0000

25

CEUX

Genmab A/S

12/06/2024

1:55:12 PM

1,844.5000

36

CEUX

Genmab A/S

12/06/2024

1:55:12 PM

1,844.5000

10

TQEX

Genmab A/S

12/06/2024

1:55:12 PM

1,845.0000

10

AQEU

Genmab A/S

12/06/2024

1:55:19 PM

1,844.5000

43

XCSE

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

31

CEUX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

31

CEUX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

16

CEUX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

4

CEUX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

3

AQEU

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

2

AQEU

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

2

AQEU

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

3

AQEU

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

2

AQEU

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

5

TQEX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

5

TQEX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

5

TQEX

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

33

XCSE

Genmab A/S

12/06/2024

1:55:19 PM

1,844.0000

33

XCSE

Genmab A/S

12/06/2024

1:55:40 PM

1,844.0000

10

XCSE

Genmab A/S

12/06/2024

1:55:40 PM

1,844.0000

64

XCSE

Genmab A/S

12/06/2024

1:55:40 PM

1,844.0000

11

XCSE

Genmab A/S

12/06/2024

1:56:40 PM

1,842.5000

18

XCSE

Genmab A/S

12/06/2024

1:56:40 PM

1,842.5000

6

XCSE

Genmab A/S

12/06/2024

1:56:47 PM

1,842.5000

24

XCSE

Genmab A/S

12/06/2024

1:56:53 PM

1,842.5000

24

XCSE

Genmab A/S

12/06/2024

1:56:53 PM

1,842.5000

19

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

5

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

15

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

20

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

20

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

20

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

20

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

5

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

20

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

3

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

2

AQEU

131


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

3

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

17

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

9

XCSE

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

42

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

4

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

1

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

1

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

23

CEUX

Genmab A/S

12/06/2024

1:58:08 PM

1,843.0000

17

CEUX

Genmab A/S

12/06/2024

1:59:46 PM

1,840.5000

24

CEUX

Genmab A/S

12/06/2024

1:59:46 PM

1,840.5000

38

XCSE

Genmab A/S

12/06/2024

1:59:46 PM

1,840.5000

38

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,843.0000

39

CEUX

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

13

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

50

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

12

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

50

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

12

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

12

XCSE

Genmab A/S

12/06/2024

2:02:04 PM

1,842.5000

8

XCSE

Genmab A/S

12/06/2024

2:03:45 PM

1,841.0000

23

CEUX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

23

CEUX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

15

CEUX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

15

CEUX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

23

CEUX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

6

AQEU

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

6

TQEX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

23

XCSE

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

20

XCSE

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

20

XCSE

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

23

XCSE

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

7

XCSE

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

9

CEUX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

6

TQEX

Genmab A/S

12/06/2024

2:04:29 PM

1,842.5000

70

TQEX

Genmab A/S

12/06/2024

2:05:25 PM

1,842.0000

30

CEUX

Genmab A/S

12/06/2024

2:05:54 PM

1,842.0000

48

CEUX

Genmab A/S

12/06/2024

2:05:54 PM

1,842.0000

52

XCSE

Genmab A/S

12/06/2024

2:05:54 PM

1,842.0000

14

CEUX

Genmab A/S

12/06/2024

2:09:33 PM

1,843.5000

9

CEUX

Genmab A/S

12/06/2024

2:09:33 PM

1,843.5000

8

XCSE

Genmab A/S

12/06/2024

2:09:52 PM

1,844.0000

11

XCSE

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

36

CEUX

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

6

AQEU

132


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

6

AQEU

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

4

AQEU

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

6

AQEU

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

6

AQEU

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

43

CEUX

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

43

CEUX

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

8

CEUX

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

10

CEUX

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

37

XCSE

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

47

XCSE

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

47

XCSE

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

37

XCSE

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

13

XCSE

Genmab A/S

12/06/2024

2:09:56 PM

1,843.5000

5

CEUX

Genmab A/S

12/06/2024

2:12:54 PM

1,842.0000

17

CEUX

Genmab A/S

12/06/2024

2:13:36 PM

1,843.5000

9

AQEU

Genmab A/S

12/06/2024

2:14:11 PM

1,842.0000

7

XCSE

Genmab A/S

12/06/2024

2:14:47 PM

1,843.5000

9

AQEU

Genmab A/S

12/06/2024

2:14:47 PM

1,843.5000

2

AQEU

Genmab A/S

12/06/2024

2:14:52 PM

1,843.5000

2

AQEU

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

31

XCSE

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

11

XCSE

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

31

XCSE

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

11

XCSE

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

28

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

11

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

28

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

11

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

19

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

1

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

31

XCSE

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

11

XCSE

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

27

CEUX

Genmab A/S

12/06/2024

2:16:36 PM

1,845.0000

11

CEUX

Genmab A/S

12/06/2024

2:16:52 PM

1,845.0000

31

XCSE

Genmab A/S

12/06/2024

2:16:52 PM

1,845.0000

19

XCSE

Genmab A/S

12/06/2024

2:18:08 PM

1,845.5000

7

XCSE

Genmab A/S

12/06/2024

2:18:08 PM

1,845.5000

16

XCSE

Genmab A/S

12/06/2024

2:18:08 PM

1,845.5000

21

CEUX

Genmab A/S

12/06/2024

2:18:08 PM

1,845.5000

9

CEUX

Genmab A/S

12/06/2024

2:18:37 PM

1,845.5000

23

XCSE

Genmab A/S

12/06/2024

2:18:37 PM

1,845.5000

3

XCSE

Genmab A/S

12/06/2024

2:18:37 PM

1,845.5000

21

CEUX

Genmab A/S

12/06/2024

2:18:37 PM

1,845.5000

3

CEUX

Genmab A/S

12/06/2024

2:18:38 PM

1,845.5000

10

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.5000

2

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.5000

9

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.5000

5

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.5000

23

XCSE

133


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:18:40 PM

1,845.5000

6

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

29

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

23

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

29

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

23

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

29

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

23

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

29

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

23

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

3

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

9

XCSE

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

27

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

27

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

11

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

27

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

18

CEUX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

5

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

5

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

5

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

5

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

5

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

TQEX

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

4

AQEU

Genmab A/S

12/06/2024

2:18:40 PM

1,845.0000

3

AQEU

Genmab A/S

12/06/2024

2:21:12 PM

1,842.0000

20

XCSE

Genmab A/S

12/06/2024

2:21:23 PM

1,842.0000

20

XCSE

Genmab A/S

12/06/2024

2:23:32 PM

1,844.0000

36

XCSE

Genmab A/S

12/06/2024

2:23:54 PM

1,844.0000

35

XCSE

Genmab A/S

12/06/2024

2:24:14 PM

1,844.0000

36

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

6

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

34

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

36

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

36

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

14

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

6

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

6

AQEU

134


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

6

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

4

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

15

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

14

CEUX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

6

AQEU

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

2

AQEU

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

6

AQEU

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

5

TQEX

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

39

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

1

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

1

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

27

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

12

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

12

XCSE

Genmab A/S

12/06/2024

2:24:24 PM

1,843.0000

41

XCSE

Genmab A/S

12/06/2024

2:25:16 PM

1,841.5000

36

XCSE

Genmab A/S

12/06/2024

2:28:38 PM

1,843.0000

4

TQEX

Genmab A/S

12/06/2024

2:28:58 PM

1,842.5000

8

XCSE

Genmab A/S

12/06/2024

2:28:58 PM

1,842.5000

5

TQEX

Genmab A/S

12/06/2024

2:29:07 PM

1,843.0000

35

XCSE

Genmab A/S

12/06/2024

2:30:02 PM

1,847.0000

52

XCSE

Genmab A/S

12/06/2024

2:30:02 PM

1,847.0000

3

XCSE

Genmab A/S

12/06/2024

2:30:02 PM

1,847.0000

4

XCSE

Genmab A/S

12/06/2024

2:30:02 PM

1,847.0000

48

XCSE

Genmab A/S

12/06/2024

2:30:02 PM

1,847.0000

4

XCSE

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

18

CEUX

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

1

CEUX

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

19

CEUX

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

19

CEUX

Genmab A/S

12/06/2024

2:30:18 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:20 PM

1,851.5000

19

CEUX

Genmab A/S

12/06/2024

2:30:20 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:20 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:20 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:20 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:20 PM

1,851.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

19

CEUX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

19

CEUX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

19

CEUX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

19

CEUX

135


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

9

CEUX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

20

XCSE

Genmab A/S

12/06/2024

2:30:52 PM

1,850.5000

12

XCSE

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

17

XCSE

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

75

XCSE

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

17

CEUX

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

8

CEUX

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

2

AQEU

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

8

AQEU

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

2

AQEU

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

5

TQEX

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

8

TQEX

Genmab A/S

12/06/2024

2:32:40 PM

1,849.5000

12

XCSE

Genmab A/S

12/06/2024

2:35:02 PM

1,849.5000

10

CEUX

Genmab A/S

12/06/2024

2:35:02 PM

1,849.5000

5

TQEX

Genmab A/S

12/06/2024

2:35:02 PM

1,849.5000

9

XCSE

Genmab A/S

12/06/2024

2:35:02 PM

1,849.5000

10

CEUX

Genmab A/S

12/06/2024

2:35:02 PM

1,849.5000

5

TQEX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

14

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

4

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

4

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

6

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

8

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

6

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

6

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

2

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

6

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

2

AQEU

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

TQEX

136


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

TQEX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

TQEX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

14

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

2

AQEU

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

2

AQEU

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

TQEX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

TQEX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

14

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

14

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

25

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

36

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

4

CEUX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

2

AQEU

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

TQEX

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

19

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

16

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

16

XCSE

Genmab A/S

12/06/2024

2:35:36 PM

1,849.0000

5

XCSE

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

1

AQEU

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

XCSE

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

XCSE

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

XCSE

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

XCSE

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

XCSE

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:36:04 PM

1,852.5000

10

CEUX

Genmab A/S

12/06/2024

2:37:53 PM

1,854.0000

12

XCSE

Genmab A/S

12/06/2024

2:37:53 PM

1,854.0000

12

XCSE

Genmab A/S

12/06/2024

2:37:53 PM

1,854.0000

50

XCSE

Genmab A/S

12/06/2024

2:37:53 PM

1,854.0000

1

CEUX

Genmab A/S

12/06/2024

2:37:53 PM

1,854.0000

10

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,853.0000

19

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,853.0000

28

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,853.0000

6

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,853.5000

49

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,853.5000

5

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,853.5000

3

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

7

XCSE

137


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

62

XCSE

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

4

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

3

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

7

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,853.0000

18

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,853.0000

18

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

2

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

6

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

15

TQEX

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

8

AQEU

Genmab A/S

12/06/2024

2:38:14 PM

1,854.0000

6

AQEU

Genmab A/S

12/06/2024

2:38:15 PM

1,853.0000

18

CEUX

Genmab A/S

12/06/2024

2:38:15 PM

1,853.0000

11

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

4

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

4

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

4

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

CEUX

138


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

38

AQEU

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

1

AQEU

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

4

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

1

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

4

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

5

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

5

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

5

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

3

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

2

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

1

CEUX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

2

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

3

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

15

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

12

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

5

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

10

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

9

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

6

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

9

XCSE

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

3

TQEX

Genmab A/S

12/06/2024

2:41:17 PM

1,851.0000

2

TQEX

Genmab A/S

12/06/2024

2:43:32 PM

1,849.0000

1

TQEX

Genmab A/S

12/06/2024

2:43:43 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:43:43 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:43:50 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:43:50 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:43:54 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:43:54 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:43:57 PM

1,851.0000

13

AQEU

Genmab A/S

12/06/2024

2:43:57 PM

1,851.0000

25

AQEU

Genmab A/S

12/06/2024

2:44:16 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:44:16 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:44:20 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:44:20 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:44:27 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:44:27 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:44:34 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:44:34 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:44:37 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:44:37 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:44:41 PM

1,851.0000

8

AQEU

Genmab A/S

12/06/2024

2:44:41 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

10

XCSE

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

9

CEUX

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

9

CEUX

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

9

CEUX

139


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

9

CEUX

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

2

AQEU

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

2

AQEU

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

2

AQEU

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

1

CEUX

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

8

CEUX

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

1

CEUX

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

10

XCSE

Genmab A/S

12/06/2024

2:44:43 PM

1,849.5000

10

XCSE

Genmab A/S

12/06/2024

2:45:25 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:45:29 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:45:56 PM

1,849.0000

12

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

14

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

50

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

26

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

4

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

4

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

5

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

3

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

5

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

3

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

5

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

3

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

2

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

7

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

2

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

3

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

5

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

5

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

18

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

4

TQEX

140


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

1

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

25

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

36

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

5

CEUX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

8

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

2

TQEX

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

15

XCSE

Genmab A/S

12/06/2024

2:46:18 PM

1,850.0000

1

CEUX

Genmab A/S

12/06/2024

2:50:09 PM

1,850.0000

27

CEUX

Genmab A/S

12/06/2024

2:50:09 PM

1,850.0000

10

CEUX

Genmab A/S

12/06/2024

2:51:05 PM

1,851.0000

4

CEUX

Genmab A/S

12/06/2024

2:51:05 PM

1,851.0000

9

CEUX

Genmab A/S

12/06/2024

2:51:11 PM

1,851.0000

13

CEUX

Genmab A/S

12/06/2024

2:51:48 PM

1,851.5000

14

CEUX

Genmab A/S

12/06/2024

2:52:10 PM

1,851.5000

1

CEUX

Genmab A/S

12/06/2024

2:52:10 PM

1,851.5000

68

CEUX

Genmab A/S

12/06/2024

2:52:10 PM

1,851.5000

11

TQEX

Genmab A/S

12/06/2024

2:52:10 PM

1,851.5000

11

TQEX

Genmab A/S

12/06/2024

2:52:19 PM

1,851.5000

35

CEUX

Genmab A/S

12/06/2024

2:52:24 PM

1,851.0000

16

CEUX

Genmab A/S

12/06/2024

2:52:24 PM

1,851.0000

6

TQEX

Genmab A/S

12/06/2024

2:52:54 PM

1,852.0000

14

XCSE

Genmab A/S

12/06/2024

2:52:54 PM

1,852.0000

24

XCSE

Genmab A/S

12/06/2024

2:52:54 PM

1,852.0000

1

XCSE

Genmab A/S

12/06/2024

2:52:59 PM

1,852.0000

36

XCSE

Genmab A/S

12/06/2024

2:53:20 PM

1,851.5000

33

XCSE

Genmab A/S

12/06/2024

2:53:36 PM

1,851.5000

37

XCSE

Genmab A/S

12/06/2024

2:55:13 PM

1,853.5000

47

XCSE

Genmab A/S

12/06/2024

2:55:13 PM

1,853.5000

47

XCSE

Genmab A/S

12/06/2024

2:55:13 PM

1,853.5000

47

XCSE

Genmab A/S

12/06/2024

2:55:13 PM

1,853.5000

9

XCSE

Genmab A/S

12/06/2024

2:55:13 PM

1,853.5000

35

XCSE

Genmab A/S

12/06/2024

2:55:22 PM

1,853.5000

34

XCSE

Genmab A/S

12/06/2024

2:55:40 PM

1,853.5000

17

XCSE

Genmab A/S

12/06/2024

2:55:40 PM

1,853.5000

19

XCSE

Genmab A/S

12/06/2024

2:56:04 PM

1,852.5000

11

CEUX

Genmab A/S

12/06/2024

2:56:04 PM

1,852.5000

9

CEUX

Genmab A/S

12/06/2024

2:56:04 PM

1,852.5000

12

XCSE

141


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

2:56:04 PM

1,852.5000

12

XCSE

Genmab A/S

12/06/2024

2:56:04 PM

1,852.5000

9

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,854.0000

36

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,854.0000

34

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

50

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

37

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

37

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

46

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

10

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

36

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

46

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

1

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

46

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

14

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

17

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

18

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

15

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

44

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

6

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

26

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

6

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

40

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

13

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

33

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

6

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

50

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

3

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

10

CEUX

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

50

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

9

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

41

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

50

XCSE

Genmab A/S

12/06/2024

2:57:31 PM

1,853.5000

25

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

7

XCSE

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

243

XCSE

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

5

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

1

AQEU

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

4

AQEU

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

2

TQEX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

142


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

7

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

7

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

33

TQEX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,853.0000

8

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,851.5000

25

XCSE

Genmab A/S

12/06/2024

3:02:40 PM

1,851.5000

23

CEUX

Genmab A/S

12/06/2024

3:02:40 PM

1,852.5000

13

XCSE

Genmab A/S

12/06/2024

3:02:40 PM

1,852.5000

32

XCSE

Genmab A/S

12/06/2024

3:04:55 PM

1,850.5000

20

XCSE

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

20

XCSE

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

20

XCSE

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

5

TQEX

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

19

CEUX

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

2

AQEU

Genmab A/S

12/06/2024

3:04:58 PM

1,850.5000

8

AQEU

Genmab A/S

12/06/2024

3:08:56 PM

1,851.0000

149

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,851.0000

114

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,851.0000

236

CEUX

Genmab A/S

12/06/2024

3:08:56 PM

1,851.0000

33

AQEU

Genmab A/S

12/06/2024

3:08:56 PM

1,851.0000

36

TQEX

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

22

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

32

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

22

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

10

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

12

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

5

CEUX

143


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Issuer

Date

Time CEST

Price (DKK)

Quantity

Venue

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

16

CEUX

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

46

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

46

XCSE

Genmab A/S

12/06/2024

3:08:56 PM

1,850.0000

18

XCSE

Genmab A/S

12/06/2024

3:09:00 PM

1,848.5000

5

XCSE

Genmab A/S

12/06/2024

3:09:00 PM

1,848.5000

41

XCSE

Genmab A/S

12/06/2024

3:09:00 PM

1,848.5000

46

XCSE

Genmab A/S

12/06/2024

3:09:00 PM

1,848.5000

38

XCSE

Genmab A/S

12/06/2024

3:14:40 PM

1,848.0000

10

AQEU

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

8

XCSE

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

64

XCSE

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

24

XCSE

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

88

XCSE

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

1

XCSE

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

53

CEUX

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

12

CEUX

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

9

AQEU

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

10

TQEX

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

24

XCSE

Genmab A/S

12/06/2024

3:16:22 PM

1,849.0000

27

XCSE

Genmab A/S

12/06/2024

3:17:59 PM

1,848.5000

24

XCSE

Genmab A/S

12/06/2024

3:18:14 PM

1,848.5000

24

XCSE

Genmab A/S

12/06/2024

3:19:36 PM

1,849.5000

38

CEUX

Genmab A/S

12/06/2024

3:20:00 PM

1,849.5000

31

CEUX

Genmab A/S

12/06/2024

3:20:00 PM

1,849.5000

9

CEUX

Genmab A/S

12/06/2024

3:20:17 PM

1,850.0000

34

XCSE

Genmab A/S

12/06/2024

3:21:18 PM

1,851.0000

18

XCSE

Genmab A/S

12/06/2024

3:21:18 PM

1,851.0000

18

XCSE

Genmab A/S

12/06/2024

3:21:18 PM

1,851.0000

18

XCSE

Genmab A/S

12/06/2024

3:21:18 PM

1,851.0000

18

XCSE

Genmab A/S

12/06/2024

3:21:18 PM

1,851.0000

18

XCSE

Genmab A/S

12/06/2024

3:21:18 PM

1,851.0000

4

XCSE

Genmab A/S

12/06/2024

3:21:20 PM

1,851.0000

14

XCSE

Genmab A/S

12/06/2024

3:21:20 PM

1,851.0000

18

XCSE

Genmab A/S

12/06/2024

3:21:21 PM

1,851.0000

8

XCSE

Genmab A/S

12/06/2024

3:21:22 PM

1,850.5000

61

XCSE

Genmab A/S

12/06/2024

3:22:12 PM

1,851.5000

36

XCSE

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

9

CEUX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

1

CEUX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

1

AQEU

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

1

AQEU

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

9

CEUX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

9

CEUX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

5

TQEX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

5

TQEX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

1

TQEX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

8

XCSE

1


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

3

XCSE

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

9

CEUX

Genmab A/S

12/06/2024

3:22:26 PM

1,851.0000

1

CEUX

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

32

CEUX

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

82

CEUX

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

51

CEUX

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

5

AQEU

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

6

AQEU

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

12

AQEU

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

26

TQEX

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

40

XCSE

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

33

XCSE

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

152

XCSE

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

28

XCSE

Genmab A/S

12/06/2024

3:23:21 PM

1,851.0000

12

XCSE

Genmab A/S

12/06/2024

3:23:22 PM

1,850.5000

19

CEUX

Genmab A/S

12/06/2024

3:25:26 PM

1,850.5000

31

XCSE

Genmab A/S

12/06/2024

3:25:26 PM

1,850.5000

13

XCSE

Genmab A/S

12/06/2024

3:27:27 PM

1,855.0000

42

XCSE

Genmab A/S

12/06/2024

3:27:27 PM

1,855.0000

26

XCSE

Genmab A/S

12/06/2024

3:27:37 PM

1,855.0000

12

CEUX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

50

CEUX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

62

CEUX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

3

CEUX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

9

AQEU

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

11

AQEU

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

9

TQEX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

28

TQEX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

8

TQEX

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

68

XCSE

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

2

XCSE

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

9

AQEU

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

4

AQEU

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

5

AQEU

Genmab A/S

12/06/2024

3:27:39 PM

1,855.0000

5

AQEU

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

XCSE

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

32

XCSE

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

35

XCSE

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

9

CEUX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

1

AQEU

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

2

AQEU

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

5

TQEX

2


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

15

TQEX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

13

TQEX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

2

TQEX

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

20

XCSE

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

4

XCSE

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

4

XCSE

Genmab A/S

12/06/2024

3:29:25 PM

1,854.0000

19

CEUX

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

19

CEUX

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

19

CEUX

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

20

XCSE

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

20

XCSE

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

20

XCSE

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

19

CEUX

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

17

CEUX

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

2

XCSE

Genmab A/S

12/06/2024

3:30:07 PM

1,855.5000

16

XCSE

Genmab A/S

12/06/2024

3:30:24 PM

1,853.0000

2

XCSE

Genmab A/S

12/06/2024

3:30:24 PM

1,853.0000

18

XCSE

Genmab A/S

12/06/2024

3:30:24 PM

1,853.0000

19

CEUX

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

17

CEUX

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

2

AQEU

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

2

AQEU

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

17

XCSE

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

17

XCSE

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

27

XCSE

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

17

XCSE

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

17

CEUX

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

2

AQEU

Genmab A/S

12/06/2024

3:31:29 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:31:31 PM

1,853.0000

17

CEUX

Genmab A/S

12/06/2024

3:31:31 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:31:31 PM

1,853.0000

17

XCSE

Genmab A/S

12/06/2024

3:31:31 PM

1,853.0000

17

CEUX

Genmab A/S

12/06/2024

3:31:31 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

22

XCSE

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

23

XCSE

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

50

XCSE

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

41

XCSE

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

50

XCSE

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

40

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

44

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

38

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

44

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

18

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

44

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

9

CEUX

3


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

23

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

10

CEUX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

7

AQEU

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

36

AQEU

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

7

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

7

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

15

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

7

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

5

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

4

TQEX

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

50

XCSE

Genmab A/S

12/06/2024

3:33:30 PM

1,855.0000

64

XCSE

Genmab A/S

12/06/2024

3:33:31 PM

1,854.5000

2

CEUX

Genmab A/S

12/06/2024

3:33:31 PM

1,854.5000

26

XCSE

Genmab A/S

12/06/2024

3:33:31 PM

1,854.5000

18

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

10

TQEX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

15

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

1

XCSE

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

7

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

1

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

8

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

4

CEUX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

5

TQEX

Genmab A/S

12/06/2024

3:36:10 PM

1,854.0000

3

TQEX

Genmab A/S

12/06/2024

3:36:12 PM

1,854.0000

21

XCSE

Genmab A/S

12/06/2024

3:36:12 PM

1,854.0000

83

XCSE

Genmab A/S

12/06/2024

3:36:12 PM

1,853.0000

20

XCSE

Genmab A/S

12/06/2024

3:36:12 PM

1,853.0000

20

XCSE

Genmab A/S

12/06/2024

3:36:12 PM

1,853.0000

18

CEUX

Genmab A/S

12/06/2024

3:36:12 PM

1,853.0000

18

CEUX

Genmab A/S

12/06/2024

3:36:12 PM

1,853.0000

20

XCSE

Genmab A/S

12/06/2024

3:36:12 PM

1,853.0000

15

CEUX

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

38

CEUX

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

10

CEUX

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

6

AQEU

4


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

41

XCSE

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

10

XCSE

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

36

CEUX

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

8

AQEU

Genmab A/S

12/06/2024

3:37:59 PM

1,853.0000

19

CEUX

Genmab A/S

12/06/2024

3:38:00 PM

1,853.0000

11

CEUX

Genmab A/S

12/06/2024

3:38:00 PM

1,853.0000

3

CEUX

Genmab A/S

12/06/2024

3:40:25 PM

1,853.0000

12

XCSE

Genmab A/S

12/06/2024

3:40:25 PM

1,853.0000

19

XCSE

Genmab A/S

12/06/2024

3:40:25 PM

1,853.0000

4

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

13

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

33

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

33

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

5

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

6

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

1

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

26

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

7

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

27

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

35

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

7

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

6

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

33

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

4

CEUX

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

40

XCSE

Genmab A/S

12/06/2024

3:40:51 PM

1,854.5000

17

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,854.0000

63

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,854.0000

34

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

13

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

7

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

7

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

19

CEUX

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

13

CEUX

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

6

CEUX

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

13

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

7

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

19

CEUX

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

20

XCSE

Genmab A/S

12/06/2024

3:42:03 PM

1,853.5000

19

CEUX

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

18

CEUX

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

2

AQEU

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

1

AQEU

5


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

5

TQEX

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

18

XCSE

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

39

XCSE

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

18

CEUX

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

2

AQEU

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

2

AQEU

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

5

TQEX

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

2

TQEX

Genmab A/S

12/06/2024

3:42:34 PM

1,854.5000

36

CEUX

Genmab A/S

12/06/2024

3:43:40 PM

1,855.5000

21

AQEU

Genmab A/S

12/06/2024

3:43:40 PM

1,855.5000

9

AQEU

Genmab A/S

12/06/2024

3:43:40 PM

1,855.5000

4

AQEU

Genmab A/S

12/06/2024

3:43:40 PM

1,855.5000

17

AQEU

Genmab A/S

12/06/2024

3:43:40 PM

1,855.5000

1

AQEU

Genmab A/S

12/06/2024

3:44:27 PM

1,855.5000

5

XCSE

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

48

XCSE

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

48

XCSE

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

2

XCSE

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

4

XCSE

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

32

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

3

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

7

AQEU

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

7

AQEU

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

9

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

3

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

10

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

34

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

7

CEUX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

6

TQEX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

6

TQEX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

3

TQEX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

6

TQEX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

5

XCSE

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

6

TQEX

Genmab A/S

12/06/2024

3:45:08 PM

1,856.0000

47

TQEX

Genmab A/S

12/06/2024

3:45:58 PM

1,855.5000

32

XCSE

Genmab A/S

12/06/2024

3:45:58 PM

1,855.5000

32

XCSE

Genmab A/S

12/06/2024

3:45:58 PM

1,855.5000

32

XCSE

Genmab A/S

12/06/2024

3:45:58 PM

1,855.5000

32

XCSE

Genmab A/S

12/06/2024

3:45:58 PM

1,855.5000

32

XCSE

Genmab A/S

12/06/2024

3:46:51 PM

1,854.5000

25

XCSE

Genmab A/S

12/06/2024

3:46:51 PM

1,854.5000

61

XCSE

Genmab A/S

12/06/2024

3:46:51 PM

1,854.5000

8

CEUX

Genmab A/S

12/06/2024

3:46:51 PM

1,854.5000

69

CEUX

Genmab A/S

12/06/2024

3:46:51 PM

1,854.5000

11

AQEU

Genmab A/S

12/06/2024

3:46:51 PM

1,854.5000

12

TQEX

Genmab A/S

12/06/2024

3:46:56 PM

1,853.5000

13

CEUX

Genmab A/S

12/06/2024

3:46:56 PM

1,853.5000

23

XCSE

Genmab A/S

12/06/2024

3:48:26 PM

1,854.5000

10

XCSE

6


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:48:26 PM

1,854.5000

10

XCSE

Genmab A/S

12/06/2024

3:48:26 PM

1,854.5000

10

CEUX

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

22

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

76

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

22

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

8

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

4

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

10

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

68

CEUX

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

10

AQEU

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

8

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

14

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

11

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

8

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

3

XCSE

Genmab A/S

12/06/2024

3:49:04 PM

1,854.5000

14

XCSE

Genmab A/S

12/06/2024

3:51:06 PM

1,855.0000

34

CEUX

Genmab A/S

12/06/2024

3:51:21 PM

1,855.0000

35

CEUX

Genmab A/S

12/06/2024

3:51:29 PM

1,855.0000

37

XCSE

Genmab A/S

12/06/2024

3:51:41 PM

1,855.0000

36

CEUX

Genmab A/S

12/06/2024

3:51:41 PM

1,855.0000

4

TQEX

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

42

CEUX

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

26

CEUX

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

133

CEUX

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

10

TQEX

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

76

XCSE

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

148

XCSE

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

10

CEUX

Genmab A/S

12/06/2024

3:51:43 PM

1,854.5000

19

CEUX

Genmab A/S

12/06/2024

3:53:29 PM

1,854.5000

107

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.5000

95

CEUX

Genmab A/S

12/06/2024

3:53:29 PM

1,854.5000

14

AQEU

Genmab A/S

12/06/2024

3:53:29 PM

1,854.5000

15

TQEX

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

4

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

12

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

9

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

12

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

21

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

9

XCSE

Genmab A/S

12/06/2024

3:53:29 PM

1,854.0000

16

XCSE

Genmab A/S

12/06/2024

3:53:34 PM

1,853.5000

41

XCSE

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

12

CEUX

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

10

CEUX

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

2

CEUX

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

6

CEUX

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

12

XCSE

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

12

XCSE

Genmab A/S

12/06/2024

3:55:21 PM

1,853.0000

3

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

7


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

1

AQEU

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

2

AQEU

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

1

AQEU

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

22

AQEU

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

8

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

1

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

6

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

5

TQEX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

21

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.5000

7

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

8

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

8

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

4

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

8

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

20

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

18

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

18

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

10

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

18

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

10

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

20

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

20

XCSE

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

7

CEUX

Genmab A/S

12/06/2024

3:55:54 PM

1,852.0000

2

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

8


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

1

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

2

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

8

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

32

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

16

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

2

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

2

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

16

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

15

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

15

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

18

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

XCSE

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

3

AQEU

Genmab A/S

12/06/2024

3:59:00 PM

1,852.0000

5

AQEU

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

19

XCSE

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

20

CEUX

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

20

CEUX

9


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

5

TQEX

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

9

CEUX

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

1

TQEX

Genmab A/S

12/06/2024

3:59:02 PM

1,851.0000

19

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

20

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

20

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

65

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

37

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

20

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

40

XCSE

Genmab A/S

12/06/2024

4:00:19 PM

1,850.0000

18

XCSE

Genmab A/S

12/06/2024

4:03:11 PM

1,854.0000

33

CEUX

Genmab A/S

12/06/2024

4:03:21 PM

1,854.0000

36

CEUX

Genmab A/S

12/06/2024

4:03:39 PM

1,854.5000

15

CEUX

Genmab A/S

12/06/2024

4:03:39 PM

1,854.5000

3

CEUX

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

59

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

25

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

84

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

25

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

59

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

21

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

18

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

66

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

18

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

5

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

61

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

5

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

26

XCSE

Genmab A/S

12/06/2024

4:03:42 PM

1,854.5000

58

XCSE

Genmab A/S

12/06/2024

4:03:43 PM

1,854.5000

27

XCSE

Genmab A/S

12/06/2024

4:03:43 PM

1,854.5000

48

XCSE

Genmab A/S

12/06/2024

4:05:09 PM

1,852.5000

46

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

13

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

5

TQEX

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

13

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

13

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

13

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

13

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

31

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

21

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

4

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

17

XCSE

Genmab A/S

12/06/2024

4:05:21 PM

1,853.0000

4

XCSE

Genmab A/S

12/06/2024

4:05:22 PM

1,853.0000

21

XCSE

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

3

AQEU

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

26

XCSE

10


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:51 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:52 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:52 PM

1,854.0000

26

XCSE

Genmab A/S

12/06/2024

4:06:52 PM

1,854.0000

23

XCSE

Genmab A/S

12/06/2024

4:06:52 PM

1,854.0000

3

XCSE

Genmab A/S

12/06/2024

4:06:52 PM

1,854.0000

31

XCSE

Genmab A/S

12/06/2024

4:07:35 PM

1,855.5000

43

XCSE

Genmab A/S

12/06/2024

4:07:35 PM

1,855.5000

6

XCSE

Genmab A/S

12/06/2024

4:08:23 PM

1,855.0000

179

XCSE

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

46

XCSE

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

48

XCSE

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

48

XCSE

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

34

XCSE

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

23

XCSE

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

12

AQEU

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

8

AQEU

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

12

AQEU

Genmab A/S

12/06/2024

4:09:01 PM

1,856.0000

11

AQEU

Genmab A/S

12/06/2024

4:10:11 PM

1,854.0000

3

AQEU

Genmab A/S

12/06/2024

4:10:11 PM

1,854.0000

10

XCSE

Genmab A/S

12/06/2024

4:10:38 PM

1,855.0000

27

AQEU

Genmab A/S

12/06/2024

4:10:38 PM

1,855.0000

211

XCSE

Genmab A/S

12/06/2024

4:10:57 PM

1,853.5000

37

XCSE

Genmab A/S

12/06/2024

4:12:04 PM

1,854.5000

12

AQEU

Genmab A/S

12/06/2024

4:12:04 PM

1,854.5000

12

AQEU

Genmab A/S

12/06/2024

4:12:04 PM

1,854.5000

15

AQEU

Genmab A/S

12/06/2024

4:12:04 PM

1,854.5000

92

XCSE

Genmab A/S

12/06/2024

4:12:04 PM

1,854.5000

74

XCSE

Genmab A/S

12/06/2024

4:12:04 PM

1,854.5000

4

XCSE

Genmab A/S

12/06/2024

4:12:52 PM

1,854.0000

66

XCSE

Genmab A/S

12/06/2024

4:12:52 PM

1,854.0000

143

XCSE

Genmab A/S

12/06/2024

4:13:18 PM

1,853.5000

1

XCSE

Genmab A/S

12/06/2024

4:13:20 PM

1,853.5000

71

XCSE

Genmab A/S

12/06/2024

4:13:21 PM

1,853.5000

72

XCSE

Genmab A/S

12/06/2024

4:15:47 PM

1,855.5000

40

CEUX

Genmab A/S

12/06/2024

4:16:00 PM

1,856.0000

8

TQEX

Genmab A/S

12/06/2024

4:16:00 PM

1,856.0000

23

XCSE

Genmab A/S

12/06/2024

4:16:00 PM

1,856.0000

2

XCSE

Genmab A/S

12/06/2024

4:16:12 PM

1,856.0000

2

AQEU

Genmab A/S

12/06/2024

4:16:12 PM

1,856.0000

8

AQEU

Genmab A/S

12/06/2024

4:16:12 PM

1,856.0000

23

XCSE

Genmab A/S

12/06/2024

4:16:12 PM

1,856.0000

2

XCSE

Genmab A/S

12/06/2024

4:16:21 PM

1,856.0000

15

AQEU

Genmab A/S

12/06/2024

4:16:21 PM

1,856.0000

2

AQEU

Genmab A/S

12/06/2024

4:16:21 PM

1,856.0000

8

TQEX

Genmab A/S

12/06/2024

4:16:21 PM

1,856.0000

2

TQEX

Genmab A/S

12/06/2024

4:16:21 PM

1,856.0000

7

TQEX

11


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:16:33 PM

1,856.0000

8

AQEU

Genmab A/S

12/06/2024

4:16:33 PM

1,856.0000

2

AQEU

Genmab A/S

12/06/2024

4:16:33 PM

1,856.0000

24

XCSE

Genmab A/S

12/06/2024

4:16:33 PM

1,856.0000

5

XCSE

Genmab A/S

12/06/2024

4:16:47 PM

1,856.0000

2

AQEU

Genmab A/S

12/06/2024

4:16:47 PM

1,856.0000

8

AQEU

Genmab A/S

12/06/2024

4:16:47 PM

1,856.0000

26

XCSE

Genmab A/S

12/06/2024

4:16:47 PM

1,856.0000

2

XCSE

Genmab A/S

12/06/2024

4:16:58 PM

1,856.0000

24

XCSE

Genmab A/S

12/06/2024

4:16:58 PM

1,856.0000

12

XCSE

Genmab A/S

12/06/2024

4:17:08 PM

1,856.0000

2

AQEU

Genmab A/S

12/06/2024

4:17:08 PM

1,856.0000

8

AQEU

Genmab A/S

12/06/2024

4:17:08 PM

1,856.0000

24

XCSE

Genmab A/S

12/06/2024

4:17:08 PM

1,856.0000

6

XCSE

Genmab A/S

12/06/2024

4:17:14 PM

1,856.0000

38

XCSE

Genmab A/S

12/06/2024

4:17:14 PM

1,856.0000

131

XCSE

Genmab A/S

12/06/2024

4:17:14 PM

1,856.0000

111

XCSE

Genmab A/S

12/06/2024

4:17:14 PM

1,856.0000

72

XCSE

Genmab A/S

12/06/2024

4:17:14 PM

1,856.0000

29

XCSE

Genmab A/S

12/06/2024

4:17:14 PM

1,856.0000

54

XCSE

Genmab A/S

12/06/2024

4:19:50 PM

1,857.0000

36

XCSE

Genmab A/S

12/06/2024

4:19:50 PM

1,857.5000

8

AQEU

Genmab A/S

12/06/2024

4:19:50 PM

1,857.5000

2

AQEU

Genmab A/S

12/06/2024

4:19:50 PM

1,857.5000

15

AQEU

Genmab A/S

12/06/2024

4:19:50 PM

1,857.5000

8

TQEX

Genmab A/S

12/06/2024

4:19:50 PM

1,857.5000

6

TQEX

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

33

TQEX

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

12

XCSE

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

32

XCSE

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

138

XCSE

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

41

XCSE

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

141

XCSE

Genmab A/S

12/06/2024

4:20:09 PM

1,857.5000

182

XCSE

Genmab A/S

12/06/2024

4:21:05 PM

1,855.0000

41

XCSE

Genmab A/S

12/06/2024

4:21:05 PM

1,855.0000

41

XCSE

Genmab A/S

12/06/2024

4:21:05 PM

1,855.0000

68

XCSE

Genmab A/S

12/06/2024

4:22:30 PM

1,855.5000

3

AQEU

Genmab A/S

12/06/2024

4:22:30 PM

1,855.5000

1

AQEU

Genmab A/S

12/06/2024

4:22:30 PM

1,855.5000

18

XCSE

Genmab A/S

12/06/2024

4:22:30 PM

1,855.5000

4

XCSE

Genmab A/S

12/06/2024

4:22:30 PM

1,855.5000

17

XCSE

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

1

AQEU

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

2

AQEU

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

36

AQEU

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

1

XCSE

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

80

XCSE

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

18

XCSE

Genmab A/S

12/06/2024

4:22:31 PM

1,855.5000

21

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

35

XCSE

12


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

17

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

32

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

37

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

27

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

17

XCSE

Genmab A/S

12/06/2024

4:24:31 PM

1,856.0000

4

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

6

AQEU

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

17

AQEU

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

6

AQEU

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

14

AQEU

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

42

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

19

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

23

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

27

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

1

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

41

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

1

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

19

XCSE

Genmab A/S

12/06/2024

4:25:32 PM

1,853.0000

13

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

5

AQEU

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

45

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

36

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

24

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

45

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

36

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

45

XCSE

Genmab A/S

12/06/2024

4:25:35 PM

1,851.5000

36

XCSE

Genmab A/S

12/06/2024

4:29:40 PM

1,852.5000

28

CEUX

Genmab A/S

12/06/2024

4:29:40 PM

1,852.5000

6

CEUX

Genmab A/S

12/06/2024

4:29:53 PM

1,852.5000

39

XCSE

Genmab A/S

12/06/2024

4:29:53 PM

1,852.5000

37

XCSE

Genmab A/S

12/06/2024

4:29:53 PM

1,852.5000

152

XCSE

Genmab A/S

12/06/2024

4:29:53 PM

1,852.5000

152

XCSE

Genmab A/S

12/06/2024

4:29:53 PM

1,852.5000

85

XCSE

Genmab A/S

12/06/2024

4:29:54 PM

1,852.5000

19

XCSE

Genmab A/S

12/06/2024

4:29:54 PM

1,852.5000

24

XCSE

Genmab A/S

12/06/2024

4:29:54 PM

1,852.5000

7

XCSE

Genmab A/S

12/06/2024

4:31:30 PM

1,854.5000

18

XCSE

Genmab A/S

12/06/2024

4:32:39 PM

1,857.5000

15

TQEX

Genmab A/S

12/06/2024

4:32:53 PM

1,856.5000

170

XCSE

Genmab A/S

12/06/2024

4:32:53 PM

1,856.5000

73

XCSE

Genmab A/S

12/06/2024

4:32:53 PM

1,856.5000

97

XCSE

Genmab A/S

12/06/2024

4:32:53 PM

1,856.5000

97

XCSE

13


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:32:53 PM

1,856.5000

11

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,855.0000

27

AQEU

Genmab A/S

12/06/2024

4:33:40 PM

1,855.0000

217

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,854.5000

19

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,854.5000

21

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,854.5000

40

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,854.5000

40

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,854.5000

2

XCSE

Genmab A/S

12/06/2024

4:33:40 PM

1,854.5000

40

XCSE

Genmab A/S

12/06/2024

4:33:41 PM

1,854.5000

30

XCSE

Genmab A/S

12/06/2024

4:33:41 PM

1,854.5000

10

XCSE

Genmab A/S

12/06/2024

4:33:41 PM

1,854.5000

10

XCSE

Genmab A/S

12/06/2024

4:33:41 PM

1,854.5000

30

XCSE

Genmab A/S

12/06/2024

4:33:42 PM

1,854.5000

16

XCSE

Genmab A/S

12/06/2024

4:36:03 PM

1,852.0000

30

XCSE

Genmab A/S

12/06/2024

4:36:03 PM

1,852.0000

57

XCSE

Genmab A/S

12/06/2024

4:36:45 PM

1,853.5000

20

XCSE

Genmab A/S

12/06/2024

4:36:46 PM

1,853.5000

18

XCSE

Genmab A/S

12/06/2024

4:36:46 PM

1,853.5000

3

AQEU

Genmab A/S

12/06/2024

4:36:46 PM

1,853.5000

9

AQEU

Genmab A/S

12/06/2024

4:36:46 PM

1,853.5000

2

XCSE

Genmab A/S

12/06/2024

4:36:46 PM

1,853.5000

5

XCSE

Genmab A/S

12/06/2024

4:36:46 PM

1,853.5000

20

XCSE

Genmab A/S

12/06/2024

4:37:26 PM

1,852.5000

355

XCSE

Genmab A/S

12/06/2024

4:37:26 PM

1,852.5000

81

XCSE

Genmab A/S

12/06/2024

4:37:26 PM

1,852.0000

26

XCSE

Genmab A/S

12/06/2024

4:37:26 PM

1,852.0000

16

XCSE

Genmab A/S

12/06/2024

4:37:26 PM

1,852.0000

7

XCSE

Genmab A/S

12/06/2024

4:37:26 PM

1,852.0000

16

XCSE

Genmab A/S

12/06/2024

4:37:27 PM

1,852.0000

19

XCSE

Genmab A/S

12/06/2024

4:37:27 PM

1,852.0000

6

AQEU

Genmab A/S

12/06/2024

4:37:27 PM

1,852.0000

42

XCSE

Genmab A/S

12/06/2024

4:39:03 PM

1,852.0000

14

AQEU

Genmab A/S

12/06/2024

4:39:03 PM

1,852.0000

110

XCSE

Genmab A/S

12/06/2024

4:39:33 PM

1,852.0000

19

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

25

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

41

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

5

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

25

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

25

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

3

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

22

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

3

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

37

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

35

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

25

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,852.0000

6

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

34

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

9

XCSE

14


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

3

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

1

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

39

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

4

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

43

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

2

XCSE

Genmab A/S

12/06/2024

4:40:23 PM

1,851.5000

1

XCSE

Genmab A/S

12/06/2024

4:43:24 PM

1,851.0000

19

CEUX

Genmab A/S

12/06/2024

4:43:24 PM

1,851.0000

15

AQEU

Genmab A/S

12/06/2024

4:43:24 PM

1,851.0000

4

TQEX

Genmab A/S

12/06/2024

4:43:31 PM

1,851.0000

23

CEUX

Genmab A/S

12/06/2024

4:43:31 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

4:43:31 PM

1,851.0000

15

AQEU

Genmab A/S

12/06/2024

4:43:39 PM

1,851.0000

2

AQEU

Genmab A/S

12/06/2024

4:43:39 PM

1,851.0000

20

AQEU

Genmab A/S

12/06/2024

4:43:39 PM

1,851.0000

15

AQEU

Genmab A/S

12/06/2024

4:43:39 PM

1,851.0000

3

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:41 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:42 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:42 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:42 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:42 PM

1,850.5000

37

XCSE

Genmab A/S

12/06/2024

4:43:42 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

35

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

35

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:43 PM

1,850.5000

35

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

37

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

37

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

19

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

2

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

19

XCSE

15


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

15

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

6

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

35

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

37

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

21

XCSE

Genmab A/S

12/06/2024

4:43:44 PM

1,850.5000

5

XCSE

Genmab A/S

12/06/2024

4:43:52 PM

1,848.0000

51

XCSE

Genmab A/S

12/06/2024

4:43:52 PM

1,848.0000

51

XCSE

Genmab A/S

12/06/2024

4:43:52 PM

1,848.0000

179

XCSE

Genmab A/S

12/06/2024

4:43:52 PM

1,848.0000

51

XCSE

Genmab A/S

12/06/2024

4:43:52 PM

1,848.0000

51

XCSE

Genmab A/S

12/06/2024

4:43:52 PM

1,848.0000

34

XCSE

Genmab A/S

12/06/2024

4:43:53 PM

1,847.5000

43

XCSE

Genmab A/S

12/06/2024

4:45:48 PM

1,848.5000

284

XCSE

Genmab A/S

12/06/2024

4:46:42 PM

1,850.0000

142

XCSE

Genmab A/S

12/06/2024

4:46:42 PM

1,850.0000

2

XCSE

Genmab A/S

12/06/2024

4:46:42 PM

1,850.0000

142

XCSE

Genmab A/S

12/06/2024

4:46:42 PM

1,850.0000

3

XCSE

Genmab A/S

12/06/2024

4:46:43 PM

1,849.0000

15

XCSE

Genmab A/S

12/06/2024

4:46:43 PM

1,849.0000

26

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

38

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

7

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

45

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

8

XCSE

Genmab A/S

12/06/2024

4:48:55 PM

1,850.0000

29

XCSE

Genmab A/S

12/06/2024

4:48:56 PM

1,850.0000

2

XCSE

Genmab A/S

12/06/2024

4:49:13 PM

1,849.5000

19

XCSE

Genmab A/S

12/06/2024

4:49:13 PM

1,849.5000

3

XCSE

Genmab A/S

12/06/2024

4:49:13 PM

1,849.5000

22

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

22

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

22

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

22

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

22

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

11

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

11

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

11

XCSE

Genmab A/S

12/06/2024

4:49:14 PM

1,849.5000

5

XCSE

Genmab A/S

12/06/2024

4:49:15 PM

1,849.5000

5

XCSE

16


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

12/06/2024

4:49:15 PM

1,849.0000

133

XCSE

Genmab A/S

12/06/2024

4:49:15 PM

1,849.0000

15

AQEU

Genmab A/S

12/06/2024

4:49:15 PM

1,849.0000

2

XCSE

Genmab A/S

12/06/2024

4:49:51 PM

1,848.5000

19

XCSE

Genmab A/S

12/06/2024

4:49:52 PM

1,848.5000

4

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

126

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

93

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

107

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

20

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

3

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

104

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

20

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

11

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

96

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

1

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

20

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

1

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

1

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

18

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

2

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

17

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

3

XCSE

Genmab A/S

12/06/2024

4:51:11 PM

1,848.0000

32

XCSE

Genmab A/S

12/06/2024

4:51:13 PM

1,847.0000

5

XCSE

Genmab A/S

12/06/2024

4:51:13 PM

1,847.0000

63

XCSE

Genmab A/S

12/06/2024

4:51:13 PM

1,847.0000

22

XCSE

Genmab A/S

12/06/2024

4:51:48 PM

1,848.0000

78

AQEU

Genmab A/S

12/06/2024

4:51:49 PM

1,847.5000

23

TQEX

Genmab A/S

12/06/2024

4:51:49 PM

1,847.5000

17

TQEX

Genmab A/S

12/06/2024

4:51:49 PM

1,847.5000

36

CEUX

Genmab A/S

12/06/2024

4:53:02 PM

1,847.0000

77

XCSE

Genmab A/S

12/06/2024

4:53:47 PM

1,847.0000

23

CEUX

Genmab A/S

12/06/2024

4:54:06 PM

1,848.0000

15

AQEU

Genmab A/S

12/06/2024

4:54:39 PM

1,847.5000

11

TQEX

Genmab A/S

12/06/2024

4:54:41 PM

1,847.5000

3

TQEX

Genmab A/S

12/06/2024

4:54:46 PM

1,847.5000

17

TQEX

Genmab A/S

12/06/2024

4:54:46 PM

1,847.5000

5

TQEX

Genmab A/S

12/06/2024

4:54:50 PM

1,847.5000

2

TQEX

Genmab A/S

12/06/2024

4:54:54 PM

1,847.5000

1

TQEX

Genmab A/S

12/06/2024

4:54:54 PM

1,847.5000

18

TQEX

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

44

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

46

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

29

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

15

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

46

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

44

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

17

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

29

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

12

XCSE

17


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

32

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

46

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

44

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

34

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

44

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

46

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

10

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

34

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

46

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

44

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

46

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

14

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

29

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

4

XCSE

Genmab A/S

13/06/2024

9:00:03 AM

1,839.5000

33

XCSE

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

21

XCSE

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

14

CEUX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

7

CEUX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

21

CEUX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

13

CEUX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

21

XCSE

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

18

XCSE

Genmab A/S

13/06/2024

9:02:01 AM

1,839.0000

31

XCSE

Genmab A/S

13/06/2024

9:03:05 AM

1,838.0000

31

XCSE

Genmab A/S

13/06/2024

9:03:05 AM

1,838.0000

31

XCSE

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

93

XCSE

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

41

XCSE

18


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

19

XCSE

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

83

CEUX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

38

CEUX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

18

CEUX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

12

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

6

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

3

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

3

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

3

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

6

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

12

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

6

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

4

AQEU

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

4

TQEX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

13

TQEX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

13

TQEX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

9:03:49 AM

1,838.0000

13

TQEX

Genmab A/S

13/06/2024

9:05:05 AM

1,837.0000

17

CEUX

Genmab A/S

13/06/2024

9:05:05 AM

1,837.0000

2

AQEU

Genmab A/S

13/06/2024

9:05:05 AM

1,837.0000

5

TQEX

Genmab A/S

13/06/2024

9:05:05 AM

1,837.0000

18

XCSE

Genmab A/S

13/06/2024

9:05:05 AM

1,837.0000

19

XCSE

Genmab A/S

13/06/2024

9:06:06 AM

1,836.5000

44

XCSE

Genmab A/S

13/06/2024

9:06:06 AM

1,836.5000

41

XCSE

Genmab A/S

13/06/2024

9:06:06 AM

1,836.5000

101

XCSE

Genmab A/S

13/06/2024

9:07:35 AM

1,837.0000

4

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

27

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

8

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

17

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

18

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

18

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

10

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

7

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

10

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

7

XCSE

19


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

28

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

7

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

7

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

35

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

6

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

32

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

11

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

35

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

36

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.5000

17

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

11

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

5

TQEX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

22

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

20

XCSE

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

8

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

2

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

19

CEUX

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

3

AQEU

Genmab A/S

13/06/2024

9:08:15 AM

1,837.0000

2

AQEU

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

18

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

22

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

43

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

16

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

17

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

20

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

20

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

3

AQEU

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

16

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

5

TQEX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

16

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

11

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

16

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

17

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

34

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

7

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

18

CEUX

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

9

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

1

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

42

XCSE

20


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

28

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

8

XCSE

Genmab A/S

13/06/2024

9:08:28 AM

1,834.5000

2

XCSE

Genmab A/S

13/06/2024

9:12:00 AM

1,832.0000

10

XCSE

Genmab A/S

13/06/2024

9:12:01 AM

1,832.0000

11

XCSE

Genmab A/S

13/06/2024

9:12:01 AM

1,832.0000

5

TQEX

Genmab A/S

13/06/2024

9:12:01 AM

1,832.0000

5

TQEX

Genmab A/S

13/06/2024

9:12:01 AM

1,832.0000

5

TQEX

Genmab A/S

13/06/2024

9:12:01 AM

1,832.0000

16

CEUX

Genmab A/S

13/06/2024

9:12:01 AM

1,832.0000

2

AQEU

Genmab A/S

13/06/2024

9:13:23 AM

1,830.5000

56

CEUX

Genmab A/S

13/06/2024

9:15:03 AM

1,833.5000

11

CEUX

Genmab A/S

13/06/2024

9:15:03 AM

1,833.5000

10

CEUX

Genmab A/S

13/06/2024

9:15:03 AM

1,833.5000

2

AQEU

Genmab A/S

13/06/2024

9:15:10 AM

1,834.5000

12

CEUX

Genmab A/S

13/06/2024

9:17:57 AM

1,838.5000

97

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

56

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

56

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

19

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

8

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

29

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

8

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

1

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

12

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

20

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

64

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

53

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

44

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

44

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

24

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

28

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

45

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

73

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

24

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

24

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

97

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

20

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

77

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,838.5000

62

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

20

CEUX

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

14

CEUX

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

20

CEUX

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

3

AQEU

21


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

22

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

22

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

20

XCSE

Genmab A/S

13/06/2024

9:17:58 AM

1,837.5000

3

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

3

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

2

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

3

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

1

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

2

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

2

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

12

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

2

AQEU

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

2

AQEU

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

9

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

34

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

18

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

18

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

18

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

14

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

22


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,837.5000

8

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,837.5000

8

XCSE

Genmab A/S

13/06/2024

9:21:08 AM

1,837.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

9

AQEU

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

17

AQEU

Genmab A/S

13/06/2024

9:21:08 AM

1,837.5000

8

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,837.5000

1

CEUX

Genmab A/S

13/06/2024

9:21:08 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

9:21:08 AM

1,838.0000

16

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,837.5000

95

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.5000

14

AQEU

Genmab A/S

13/06/2024

9:23:45 AM

1,837.5000

14

TQEX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.5000

106

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

21

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

21

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

25

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

6

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

15

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

15

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

1

AQEU

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

1

AQEU

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

1

AQEU

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

5

TQEX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

10

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

5

TQEX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

8

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

11

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

12

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

5

TQEX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

3

TQEX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

49

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,837.0000

18

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,836.5000

5

TQEX

Genmab A/S

13/06/2024

9:23:45 AM

1,836.5000

21

XCSE

Genmab A/S

13/06/2024

9:23:45 AM

1,836.5000

21

CEUX

Genmab A/S

13/06/2024

9:23:45 AM

1,836.5000

13

XCSE

Genmab A/S

13/06/2024

9:25:06 AM

1,837.0000

3

XCSE

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

12

CEUX

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

77

CEUX

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

14

CEUX

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

15

AQEU

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

16

TQEX

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

2

XCSE

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

57

XCSE

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

13

XCSE

Genmab A/S

13/06/2024

9:26:43 AM

1,836.5000

43

XCSE

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

10

CEUX

23


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

10

CEUX

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

1

AQEU

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

10

XCSE

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

10

XCSE

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

10

CEUX

Genmab A/S

13/06/2024

9:29:11 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:29:46 AM

1,839.5000

3

XCSE

Genmab A/S

13/06/2024

9:29:46 AM

1,839.5000

28

XCSE

Genmab A/S

13/06/2024

9:29:46 AM

1,839.5000

37

XCSE

Genmab A/S

13/06/2024

9:29:46 AM

1,839.5000

16

XCSE

Genmab A/S

13/06/2024

9:29:46 AM

1,839.5000

28

CEUX

Genmab A/S

13/06/2024

9:29:46 AM

1,839.5000

5

TQEX

Genmab A/S

13/06/2024

9:30:20 AM

1,841.5000

14

CEUX

Genmab A/S

13/06/2024

9:30:20 AM

1,841.5000

19

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

47

XCSE

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

47

XCSE

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

42

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

24

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

18

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

42

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

20

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

37

CEUX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

8

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

2

TQEX

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

47

XCSE

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

47

XCSE

Genmab A/S

13/06/2024

9:30:31 AM

1,841.0000

16

XCSE

Genmab A/S

13/06/2024

9:30:31 AM

1,840.5000

1

CEUX

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

20

XCSE

Genmab A/S

13/06/2024

9:30:36 AM

1,838.0000

3

CEUX

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

19

CEUX

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

19

CEUX

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

19

CEUX

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

1

CEUX

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

2

AQEU

24


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:30:36 AM

1,838.5000

5

TQEX

Genmab A/S

13/06/2024

9:33:10 AM

1,838.0000

11

XCSE

Genmab A/S

13/06/2024

9:34:01 AM

1,840.0000

36

CEUX

Genmab A/S

13/06/2024

9:34:11 AM

1,840.0000

36

XCSE

Genmab A/S

13/06/2024

9:34:21 AM

1,840.0000

37

CEUX

Genmab A/S

13/06/2024

9:34:57 AM

1,840.5000

5

CEUX

Genmab A/S

13/06/2024

9:34:57 AM

1,840.5000

13

CEUX

Genmab A/S

13/06/2024

9:34:57 AM

1,840.5000

4

TQEX

Genmab A/S

13/06/2024

9:34:57 AM

1,840.5000

12

CEUX

Genmab A/S

13/06/2024

9:35:00 AM

1,839.5000

66

XCSE

Genmab A/S

13/06/2024

9:35:00 AM

1,839.5000

66

XCSE

Genmab A/S

13/06/2024

9:35:00 AM

1,839.5000

59

CEUX

Genmab A/S

13/06/2024

9:35:00 AM

1,839.5000

9

TQEX

Genmab A/S

13/06/2024

9:35:00 AM

1,839.5000

59

CEUX

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

3

CEUX

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

6

CEUX

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

9

XCSE

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

7

XCSE

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

2

XCSE

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

2

XCSE

Genmab A/S

13/06/2024

9:35:06 AM

1,839.0000

9

CEUX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

40

XCSE

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

14

XCSE

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

55

XCSE

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

52

XCSE

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

60

XCSE

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

48

CEUX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

14

CEUX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

48

CEUX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

56

CEUX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

10

TQEX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

7

TQEX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

10

TQEX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

10

TQEX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

3

TQEX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

7

CEUX

Genmab A/S

13/06/2024

9:37:05 AM

1,840.0000

55

CEUX

Genmab A/S

13/06/2024

9:39:08 AM

1,841.0000

23

XCSE

Genmab A/S

13/06/2024

9:39:08 AM

1,841.0000

130

XCSE

Genmab A/S

13/06/2024

9:39:08 AM

1,841.0000

2

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

2

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

1

AQEU

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

1

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

XCSE

25


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

5

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

4

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

4

XCSE

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

8

AQEU

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

1

AQEU

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

9

TQEX

26


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

2

TQEX

Genmab A/S

13/06/2024

9:40:03 AM

1,841.0000

8

AQEU

Genmab A/S

13/06/2024

9:40:03 AM

1,840.5000

19

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

44

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

15

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

11

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

15

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

50

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

50

XCSE

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

62

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

50

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

12

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

38

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

33

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

9

AQEU

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

9

AQEU

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

9

AQEU

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

10

TQEX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

10

TQEX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

6

TQEX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

3

TQEX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

9

AQEU

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

7

AQEU

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

9

TQEX

Genmab A/S

13/06/2024

9:43:29 AM

1,840.5000

19

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,840.5000

19

CEUX

Genmab A/S

13/06/2024

9:43:29 AM

1,841.0000

31

XCSE

Genmab A/S

13/06/2024

9:45:28 AM

1,840.0000

1

XCSE

Genmab A/S

13/06/2024

9:47:49 AM

1,846.0000

48

XCSE

Genmab A/S

13/06/2024

9:47:49 AM

1,846.0000

30

XCSE

Genmab A/S

13/06/2024

9:47:49 AM

1,846.0000

24

XCSE

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

14

CEUX

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

11

CEUX

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

10

TQEX

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

7

TQEX

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

9

XCSE

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

11

XCSE

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

11

CEUX

Genmab A/S

13/06/2024

9:48:13 AM

1,846.5000

21

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

28

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

10

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

30

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

10

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

40

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

3

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

40

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

28

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

22

XCSE

27


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

28

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

45

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

17

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

27

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

35

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

15

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

62

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

15

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

17

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

AQEU

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

AQEU

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

AQEU

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

AQEU

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

7

AQEU

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

TQEX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

3

CEUX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

TQEX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

TQEX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

TQEX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

9

TQEX

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

15

XCSE

Genmab A/S

13/06/2024

9:48:38 AM

1,846.0000

8

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

50

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

58

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

58

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

58

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

58

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

20

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

13

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

AQEU

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

AQEU

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

AQEU

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

AQEU

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

8

AQEU

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

3

AQEU

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

9

TQEX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

9

TQEX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

9

TQEX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

9

TQEX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

9

TQEX

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

38

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

25

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

25

XCSE

28


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

38

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

16

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

12

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

19

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

19

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,843.5000

12

XCSE

Genmab A/S

13/06/2024

9:51:44 AM

1,842.5000

17

CEUX

Genmab A/S

13/06/2024

9:51:44 AM

1,842.5000

5

TQEX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

38

CEUX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

6

TQEX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

6

TQEX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

2

TQEX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

13

CEUX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

12

CEUX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

6

TQEX

Genmab A/S

13/06/2024

9:57:31 AM

1,846.0000

23

CEUX

Genmab A/S

13/06/2024

9:57:54 AM

1,846.0000

2

CEUX

Genmab A/S

13/06/2024

9:57:54 AM

1,846.0000

5

CEUX

Genmab A/S

13/06/2024

9:58:22 AM

1,846.0000

33

CEUX

Genmab A/S

13/06/2024

9:58:22 AM

1,846.0000

14

CEUX

Genmab A/S

13/06/2024

9:58:25 AM

1,846.0000

36

CEUX

Genmab A/S

13/06/2024

9:58:25 AM

1,846.0000

36

XCSE

Genmab A/S

13/06/2024

9:58:51 AM

1,846.0000

12

CEUX

Genmab A/S

13/06/2024

9:59:15 AM

1,846.0000

1

XCSE

Genmab A/S

13/06/2024

9:59:15 AM

1,846.0000

40

XCSE

Genmab A/S

13/06/2024

9:59:19 AM

1,846.0000

56

CEUX

Genmab A/S

13/06/2024

9:59:30 AM

1,846.0000

30

CEUX

Genmab A/S

13/06/2024

9:59:45 AM

1,846.0000

34

CEUX

Genmab A/S

13/06/2024

9:59:47 AM

1,846.0000

37

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

83

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

5

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

5

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

18

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

24

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

5

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

26

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

83

XCSE

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

75

CEUX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

11

CEUX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

11

CEUX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

12

TQEX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

53

CEUX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

12

TQEX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

12

TQEX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

4

TQEX

Genmab A/S

13/06/2024

10:00:03 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

10:00:04 AM

1,845.5000

50

XCSE

29


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:00:04 AM

1,845.5000

120

XCSE

Genmab A/S

13/06/2024

10:00:04 AM

1,845.5000

28

XCSE

Genmab A/S

13/06/2024

10:03:41 AM

1,842.0000

7

XCSE

Genmab A/S

13/06/2024

10:03:41 AM

1,842.0000

40

XCSE

Genmab A/S

13/06/2024

10:05:15 AM

1,844.0000

12

AQEU

Genmab A/S

13/06/2024

10:05:15 AM

1,844.0000

8

XCSE

Genmab A/S

13/06/2024

10:05:29 AM

1,843.5000

8

XCSE

Genmab A/S

13/06/2024

10:05:33 AM

1,844.0000

22

TQEX

Genmab A/S

13/06/2024

10:05:34 AM

1,844.0000

36

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

37

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

37

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

37

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

37

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

23

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

2

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

4

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

2

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

4

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

2

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

3

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

42

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

42

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

42

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

42

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

2

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,843.5000

19

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

14

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

20

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

20

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

6

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

20

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

5

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

15

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

15

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

9

XCSE

30


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

9

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

2

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

1

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

11

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

2

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

5

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

2

CEUX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

3

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

8

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

2

TQEX

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

37

XCSE

Genmab A/S

13/06/2024

10:05:39 AM

1,842.5000

10

CEUX

Genmab A/S

13/06/2024

10:05:40 AM

1,842.5000

7

CEUX

Genmab A/S

13/06/2024

10:09:18 AM

1,843.0000

8

XCSE

Genmab A/S

13/06/2024

10:10:57 AM

1,843.5000

33

CEUX

Genmab A/S

13/06/2024

10:10:57 AM

1,843.5000

1

CEUX

Genmab A/S

13/06/2024

10:11:11 AM

1,844.0000

3

AQEU

Genmab A/S

13/06/2024

10:11:11 AM

1,844.0000

1

AQEU

Genmab A/S

13/06/2024

10:11:11 AM

1,844.0000

35

AQEU

Genmab A/S

13/06/2024

10:11:28 AM

1,844.0000

34

XCSE

Genmab A/S

13/06/2024

10:11:48 AM

1,844.0000

38

XCSE

Genmab A/S

13/06/2024

10:12:34 AM

1,845.0000

6

CEUX

Genmab A/S

13/06/2024

10:12:34 AM

1,845.0000

20

CEUX

Genmab A/S

13/06/2024

10:12:34 AM

1,845.0000

2

CEUX

Genmab A/S

13/06/2024

10:12:52 AM

1,845.5000

18

CEUX

Genmab A/S

13/06/2024

10:12:52 AM

1,845.5000

2

CEUX

Genmab A/S

13/06/2024

10:12:52 AM

1,845.5000

12

AQEU

Genmab A/S

13/06/2024

10:12:52 AM

1,845.5000

11

TQEX

Genmab A/S

13/06/2024

10:12:52 AM

1,845.5000

14

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

58

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

30

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

28

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

1

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

11

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

28

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

19

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

8

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

1

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

1

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

19

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

1

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

36

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

4

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

46

XCSE

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

8

XCSE

31


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:13:21 AM

1,850.5000

46

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

53

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

5

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

53

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

5

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

53

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

27

XCSE

Genmab A/S

13/06/2024

10:13:22 AM

1,850.5000

31

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

2

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

56

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

58

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

58

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

26

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

32

XCSE

Genmab A/S

13/06/2024

10:13:24 AM

1,850.5000

58

XCSE

Genmab A/S

13/06/2024

10:18:03 AM

1,845.0000

48

XCSE

Genmab A/S

13/06/2024

10:18:03 AM

1,845.0000

43

CEUX

Genmab A/S

13/06/2024

10:18:03 AM

1,845.0000

7

TQEX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

19

XCSE

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

19

CEUX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

9

CEUX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

10

CEUX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

10

CEUX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

10:18:18 AM

1,844.5000

19

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

57

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

7

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

5

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

31

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

4

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

24

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

1

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

58

CEUX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

58

CEUX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

8

CEUX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

9

TQEX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

9

TQEX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

36

CEUX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

9

TQEX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

9

TQEX

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

6

XCSE

Genmab A/S

13/06/2024

10:20:18 AM

1,845.5000

16

CEUX

Genmab A/S

13/06/2024

10:20:29 AM

1,843.5000

5

TQEX

Genmab A/S

13/06/2024

10:23:24 AM

1,844.0000

33

CEUX

Genmab A/S

13/06/2024

10:23:36 AM

1,844.5000

8

XCSE

Genmab A/S

13/06/2024

10:23:36 AM

1,844.5000

8

XCSE

Genmab A/S

13/06/2024

10:23:36 AM

1,844.5000

1

XCSE

32


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

27

CEUX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

27

CEUX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

27

CEUX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

3

AQEU

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

37

XCSE

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

29

XCSE

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

23

XCSE

Genmab A/S

13/06/2024

10:23:39 AM

1,844.0000

15

CEUX

Genmab A/S

13/06/2024

10:24:49 AM

1,844.5000

14

XCSE

Genmab A/S

13/06/2024

10:24:49 AM

1,844.5000

8

XCSE

Genmab A/S

13/06/2024

10:24:49 AM

1,844.5000

1

XCSE

Genmab A/S

13/06/2024

10:24:49 AM

1,844.5000

20

CEUX

Genmab A/S

13/06/2024

10:24:49 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

10:25:04 AM

1,845.5000

38

CEUX

Genmab A/S

13/06/2024

10:26:27 AM

1,846.0000

34

CEUX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

8

CEUX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

28

CEUX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

25

CEUX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

5

CEUX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

16

CEUX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

20

TQEX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

1

TQEX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

8

TQEX

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

20

XCSE

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

25

XCSE

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

24

XCSE

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

9

XCSE

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

53

XCSE

Genmab A/S

13/06/2024

10:26:48 AM

1,846.0000

8

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

78

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

20

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

53

XCSE

33


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

1

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

1

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

35

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,848.0000

12

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

2

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

99

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

5

XCSE

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

51

CEUX

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

8

AQEU

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

8

TQEX

Genmab A/S

13/06/2024

10:29:10 AM

1,847.0000

57

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

20

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

4

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

22

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

22

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

1

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

21

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

18

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

6

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

22

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

3

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

6

CEUX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

3

AQEU

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

3

AQEU

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

34


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

3

TQEX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

24

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

7

XCSE

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:33:02 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

3

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

8

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

7

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

4

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

7

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

3

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

5

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

10

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

1

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

10

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

2

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

9

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

9

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

1

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

1

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

37

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

2

XCSE

35


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

11

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

1

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

10

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

10

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

1

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

3

XCSE

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

6

CEUX

Genmab A/S

13/06/2024

10:34:29 AM

1,842.0000

6

CEUX

Genmab A/S

13/06/2024

10:39:28 AM

1,842.5000

15

TQEX

Genmab A/S

13/06/2024

10:39:28 AM

1,842.5000

19

TQEX

Genmab A/S

13/06/2024

10:39:47 AM

1,842.5000

34

XCSE

Genmab A/S

13/06/2024

10:40:01 AM

1,842.5000

11

CEUX

Genmab A/S

13/06/2024

10:40:01 AM

1,842.5000

4

CEUX

Genmab A/S

13/06/2024

10:40:01 AM

1,842.5000

14

AQEU

Genmab A/S

13/06/2024

10:40:01 AM

1,842.5000

9

AQEU

Genmab A/S

13/06/2024

10:40:01 AM

1,842.5000

1

AQEU

Genmab A/S

13/06/2024

10:40:20 AM

1,842.5000

9

CEUX

Genmab A/S

13/06/2024

10:40:20 AM

1,842.5000

28

CEUX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

38

CEUX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

20

CEUX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

5

CEUX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

10

TQEX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

1

TQEX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

60

XCSE

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

60

XCSE

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

9

XCSE

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

45

CEUX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

52

CEUX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

8

TQEX

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

24

XCSE

Genmab A/S

13/06/2024

10:40:41 AM

1,842.5000

33

XCSE

Genmab A/S

13/06/2024

10:43:33 AM

1,841.5000

37

CEUX

Genmab A/S

13/06/2024

10:43:51 AM

1,841.0000

18

CEUX

Genmab A/S

13/06/2024

10:43:51 AM

1,841.0000

19

CEUX

Genmab A/S

13/06/2024

10:43:51 AM

1,841.0000

1

XCSE

Genmab A/S

13/06/2024

10:44:10 AM

1,842.0000

35

CEUX

Genmab A/S

13/06/2024

10:44:10 AM

1,842.0000

1

CEUX

Genmab A/S

13/06/2024

10:44:25 AM

1,841.5000

7

XCSE

Genmab A/S

13/06/2024

10:44:31 AM

1,841.5000

17

XCSE

Genmab A/S

13/06/2024

10:44:31 AM

1,841.5000

21

XCSE

Genmab A/S

13/06/2024

10:44:50 AM

1,842.0000

1

CEUX

Genmab A/S

13/06/2024

10:44:50 AM

1,842.0000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,842.0000

35

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

36


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

36

TQEX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

35

TQEX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

2

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

8

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

2

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

6

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

8

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

1

AQEU

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

35

XCSE

Genmab A/S

13/06/2024

10:45:04 AM

1,841.5000

13

XCSE

Genmab A/S

13/06/2024

10:46:44 AM

1,841.5000

8

CEUX

Genmab A/S

13/06/2024

10:46:44 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

10:47:50 AM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

11

CEUX

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

29

CEUX

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

81

CEUX

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

6

CEUX

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

4

CEUX

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

43

CEUX

Genmab A/S

13/06/2024

10:48:26 AM

1,843.5000

14

TQEX

Genmab A/S

13/06/2024

10:48:27 AM

1,843.5000

27

CEUX

Genmab A/S

13/06/2024

10:48:27 AM

1,843.5000

12

TQEX

Genmab A/S

13/06/2024

10:49:48 AM

1,844.5000

13

CEUX

Genmab A/S

13/06/2024

10:49:58 AM

1,846.5000

24

XCSE

Genmab A/S

13/06/2024

10:49:58 AM

1,846.5000

6

XCSE

Genmab A/S

13/06/2024

10:49:58 AM

1,846.5000

9

XCSE

Genmab A/S

13/06/2024

10:50:14 AM

1,846.5000

34

XCSE

Genmab A/S

13/06/2024

10:50:31 AM

1,846.5000

35

XCSE

Genmab A/S

13/06/2024

10:50:47 AM

1,846.5000

9

XCSE

Genmab A/S

13/06/2024

10:50:52 AM

1,846.5000

3

XCSE

Genmab A/S

13/06/2024

10:50:55 AM

1,846.5000

8

XCSE

Genmab A/S

13/06/2024

10:50:55 AM

1,846.5000

8

XCSE

Genmab A/S

13/06/2024

10:51:02 AM

1,846.5000

8

XCSE

Genmab A/S

13/06/2024

10:51:02 AM

1,846.5000

9

XCSE

Genmab A/S

13/06/2024

10:51:02 AM

1,846.5000

20

XCSE

Genmab A/S

13/06/2024

10:51:19 AM

1,846.5000

14

XCSE

Genmab A/S

13/06/2024

10:51:28 AM

1,846.5000

24

XCSE

37


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

10:51:40 AM

1,845.5000

39

XCSE

Genmab A/S

13/06/2024

10:51:40 AM

1,845.5000

213

XCSE

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

19

XCSE

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

92

XCSE

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

19

XCSE

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

35

XCSE

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

19

CEUX

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

5

TQEX

Genmab A/S

13/06/2024

10:51:41 AM

1,845.0000

45

XCSE

Genmab A/S

13/06/2024

10:51:42 AM

1,845.0000

22

XCSE

Genmab A/S

13/06/2024

10:51:42 AM

1,845.0000

23

XCSE

Genmab A/S

13/06/2024

10:51:42 AM

1,845.0000

16

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

19

CEUX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

19

CEUX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

12

CEUX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

19

CEUX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

AQEU

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

AQEU

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

6

TQEX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

18

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

50

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

18

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

58

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

18

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

20

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

3

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

18

CEUX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

AQEU

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

4

TQEX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

46

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

46

XCSE

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

8

TQEX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

TQEX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

41

CEUX

Genmab A/S

13/06/2024

10:51:45 AM

1,844.5000

2

CEUX

Genmab A/S

13/06/2024

11:00:05 AM

1,843.5000

11

XCSE

Genmab A/S

13/06/2024

11:00:05 AM

1,843.5000

2

XCSE

Genmab A/S

13/06/2024

11:00:05 AM

1,843.5000

13

CEUX

Genmab A/S

13/06/2024

11:00:05 AM

1,843.5000

13

CEUX

Genmab A/S

13/06/2024

11:00:05 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

11:00:05 AM

1,843.5000

13

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

CEUX

38


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

CEUX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

CEUX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

78

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

34

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

34

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

34

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

6

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

28

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

4

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

CEUX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

CEUX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

15

CEUX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

7

CEUX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

37

XCSE

Genmab A/S

13/06/2024

11:01:43 AM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

11:04:05 AM

1,844.5000

25

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

7

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

4

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

13

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

4

XCSE

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:06:51 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

9

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

1

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

39


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

4

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

5

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

5

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

10

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

11

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

5

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

6

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

5

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

35

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

17

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

1

XCSE

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

13

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

3

CEUX

40


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

16

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

3

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

5

CEUX

Genmab A/S

13/06/2024

11:07:20 AM

1,848.0000

7

CEUX

Genmab A/S

13/06/2024

11:10:07 AM

1,846.0000

22

XCSE

Genmab A/S

13/06/2024

11:12:18 AM

1,846.5000

20

AQEU

Genmab A/S

13/06/2024

11:12:30 AM

1,847.0000

12

TQEX

Genmab A/S

13/06/2024

11:12:30 AM

1,847.0000

8

TQEX

Genmab A/S

13/06/2024

11:12:30 AM

1,847.0000

14

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

17

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

3

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

17

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

14

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

3

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

17

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

11

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

2

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

3

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

2

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

5

TQEX

41


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

20

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

17

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

20

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.5000

10

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

17

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

50

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

21

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

21

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

3

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

3

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

3

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

3

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

21

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

3

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

16

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

28

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

1

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

39

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

37

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,845.0000

14

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

3

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

48

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.5000

12

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

CEUX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

20

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

14

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

6

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

36

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

11

XCSE

Genmab A/S

13/06/2024

11:14:26 AM

1,844.0000

47

XCSE

42


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:17:21 AM

1,839.0000

17

XCSE

Genmab A/S

13/06/2024

11:21:37 AM

1,842.0000

38

CEUX

Genmab A/S

13/06/2024

11:22:02 AM

1,842.0000

28

CEUX

Genmab A/S

13/06/2024

11:22:02 AM

1,842.0000

7

CEUX

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

37

CEUX

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

6

TQEX

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

6

TQEX

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

41

XCSE

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

70

XCSE

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

38

XCSE

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

35

CEUX

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

6

TQEX

Genmab A/S

13/06/2024

11:22:38 AM

1,842.0000

27

CEUX

Genmab A/S

13/06/2024

11:23:30 AM

1,841.5000

8

XCSE

Genmab A/S

13/06/2024

11:23:30 AM

1,841.5000

17

XCSE

Genmab A/S

13/06/2024

11:23:30 AM

1,841.5000

40

CEUX

Genmab A/S

13/06/2024

11:23:30 AM

1,841.5000

24

CEUX

Genmab A/S

13/06/2024

11:23:30 AM

1,841.5000

24

CEUX

Genmab A/S

13/06/2024

11:23:30 AM

1,841.5000

5

TQEX

Genmab A/S

13/06/2024

11:25:17 AM

1,841.5000

83

XCSE

Genmab A/S

13/06/2024

11:25:17 AM

1,841.5000

60

XCSE

Genmab A/S

13/06/2024

11:25:17 AM

1,841.5000

128

CEUX

Genmab A/S

13/06/2024

11:25:17 AM

1,841.5000

18

AQEU

Genmab A/S

13/06/2024

11:25:17 AM

1,841.5000

20

TQEX

Genmab A/S

13/06/2024

11:25:17 AM

1,841.0000

56

XCSE

Genmab A/S

13/06/2024

11:25:17 AM

1,841.0000

42

XCSE

Genmab A/S

13/06/2024

11:25:17 AM

1,841.0000

41

XCSE

Genmab A/S

13/06/2024

11:25:17 AM

1,841.0000

50

CEUX

Genmab A/S

13/06/2024

11:25:17 AM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

5

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

3

CEUX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

1

AQEU

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

8

AQEU

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

6

XCSE

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

3

XCSE

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

9

XCSE

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

9

XCSE

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

10

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

9

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

2

TQEX

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

22

CEUX

43


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:30:03 AM

1,840.0000

8

AQEU

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

14

CEUX

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

5

TQEX

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

14

CEUX

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

5

TQEX

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

5

TQEX

Genmab A/S

13/06/2024

11:31:44 AM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

11:31:45 AM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

11:32:56 AM

1,840.0000

12

AQEU

Genmab A/S

13/06/2024

11:33:06 AM

1,840.0000

20

AQEU

Genmab A/S

13/06/2024

11:33:06 AM

1,840.0000

2

XCSE

Genmab A/S

13/06/2024

11:33:06 AM

1,840.0000

11

XCSE

Genmab A/S

13/06/2024

11:33:06 AM

1,840.0000

5

XCSE

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

76

CEUX

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

11

AQEU

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

12

TQEX

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

46

XCSE

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

84

XCSE

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

46

XCSE

Genmab A/S

13/06/2024

11:33:24 AM

1,839.0000

32

XCSE

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

17

XCSE

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

17

CEUX

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

12

CEUX

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

2

AQEU

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

2

AQEU

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

2

AQEU

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

8

AQEU

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

17

XCSE

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

10

XCSE

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

8

AQEU

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

1

AQEU

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

41

XCSE

Genmab A/S

13/06/2024

11:33:25 AM

1,838.0000

20

XCSE

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

11

CEUX

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

10

CEUX

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

4

CEUX

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

10

CEUX

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

2

AQEU

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

11:33:26 AM

1,837.5000

21

XCSE

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

21

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

3

AQEU

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

22

XCSE

44


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

73

XCSE

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

22

XCSE

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

3

XCSE

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

21

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

21

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

8

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

13

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

8

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

3

AQEU

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

9

AQEU

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

14

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

1

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

25

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

3

AQEU

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

11

CEUX

Genmab A/S

13/06/2024

11:36:19 AM

1,835.0000

3

AQEU

Genmab A/S

13/06/2024

11:36:21 AM

1,834.0000

18

CEUX

Genmab A/S

13/06/2024

11:36:21 AM

1,834.0000

21

XCSE

Genmab A/S

13/06/2024

11:36:21 AM

1,834.0000

21

XCSE

Genmab A/S

13/06/2024

11:42:48 AM

1,836.5000

18

XCSE

Genmab A/S

13/06/2024

11:42:48 AM

1,836.5000

21

XCSE

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

10

CEUX

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

8

XCSE

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

2

XCSE

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

10

XCSE

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

10

XCSE

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

10

XCSE

Genmab A/S

13/06/2024

11:43:24 AM

1,835.5000

9

XCSE

Genmab A/S

13/06/2024

11:43:49 AM

1,836.0000

19

XCSE

Genmab A/S

13/06/2024

11:43:49 AM

1,836.0000

21

XCSE

Genmab A/S

13/06/2024

11:44:14 AM

1,836.0000

11

CEUX

Genmab A/S

13/06/2024

11:44:14 AM

1,836.0000

18

XCSE

Genmab A/S

13/06/2024

11:44:20 AM

1,836.0000

24

XCSE

Genmab A/S

13/06/2024

11:44:20 AM

1,836.0000

50

XCSE

Genmab A/S

13/06/2024

11:44:20 AM

1,836.0000

25

XCSE

Genmab A/S

13/06/2024

11:44:20 AM

1,836.0000

89

CEUX

Genmab A/S

13/06/2024

11:44:20 AM

1,836.0000

13

AQEU

Genmab A/S

13/06/2024

11:44:20 AM

1,836.0000

14

TQEX

Genmab A/S

13/06/2024

11:46:37 AM

1,835.5000

21

CEUX

Genmab A/S

13/06/2024

11:46:37 AM

1,835.5000

16

CEUX

Genmab A/S

13/06/2024

11:47:01 AM

1,835.5000

3

CEUX

Genmab A/S

13/06/2024

11:47:01 AM

1,835.5000

32

CEUX

45


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

24

CEUX

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

50

CEUX

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

13

CEUX

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

13

AQEU

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

13

TQEX

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

26

XCSE

Genmab A/S

13/06/2024

11:47:07 AM

1,834.5000

70

XCSE

Genmab A/S

13/06/2024

11:49:29 AM

1,835.0000

4

TQEX

Genmab A/S

13/06/2024

11:49:29 AM

1,835.0000

15

TQEX

Genmab A/S

13/06/2024

11:49:29 AM

1,835.0000

15

TQEX

Genmab A/S

13/06/2024

11:49:29 AM

1,835.0000

6

TQEX

Genmab A/S

13/06/2024

11:49:34 AM

1,834.0000

89

XCSE

Genmab A/S

13/06/2024

11:49:34 AM

1,834.0000

4

XCSE

Genmab A/S

13/06/2024

11:49:34 AM

1,834.0000

84

CEUX

Genmab A/S

13/06/2024

11:49:34 AM

1,834.0000

13

TQEX

Genmab A/S

13/06/2024

11:49:34 AM

1,834.0000

12

CEUX

Genmab A/S

13/06/2024

11:51:54 AM

1,835.0000

22

TQEX

Genmab A/S

13/06/2024

11:51:54 AM

1,835.0000

16

XCSE

Genmab A/S

13/06/2024

11:52:20 AM

1,836.0000

21

XCSE

Genmab A/S

13/06/2024

11:52:20 AM

1,836.0000

9

XCSE

Genmab A/S

13/06/2024

11:52:20 AM

1,836.0000

5

XCSE

Genmab A/S

13/06/2024

11:52:40 AM

1,836.0000

21

XCSE

Genmab A/S

13/06/2024

11:52:40 AM

1,836.0000

18

XCSE

Genmab A/S

13/06/2024

11:53:03 AM

1,836.0000

20

XCSE

Genmab A/S

13/06/2024

11:53:03 AM

1,836.0000

16

XCSE

Genmab A/S

13/06/2024

11:53:15 AM

1,835.0000

3

AQEU

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

49

XCSE

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

13

XCSE

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

7

XCSE

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

55

CEUX

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

3

CEUX

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

5

CEUX

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

5

AQEU

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

3

AQEU

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

9

TQEX

Genmab A/S

13/06/2024

11:53:26 AM

1,835.0000

9

TQEX

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

23

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

23

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

22

CEUX

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

5

TQEX

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

5

TQEX

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

11

CEUX

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

23

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

23

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

23

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

19

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

35

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

53

XCSE

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

53

XCSE

46


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

11:55:06 AM

1,836.0000

27

CEUX

Genmab A/S

13/06/2024

11:58:24 AM

1,836.0000

65

XCSE

Genmab A/S

13/06/2024

11:58:24 AM

1,836.0000

12

XCSE

Genmab A/S

13/06/2024

11:58:30 AM

1,835.5000

16

XCSE

Genmab A/S

13/06/2024

11:58:30 AM

1,835.5000

26

XCSE

Genmab A/S

13/06/2024

11:59:08 AM

1,836.0000

8

XCSE

Genmab A/S

13/06/2024

11:59:59 AM

1,836.5000

37

CEUX

Genmab A/S

13/06/2024

11:59:59 AM

1,836.0000

8

CEUX

Genmab A/S

13/06/2024

11:59:59 AM

1,836.0000

1

AQEU

Genmab A/S

13/06/2024

11:59:59 AM

1,836.0000

5

TQEX

Genmab A/S

13/06/2024

11:59:59 AM

1,836.0000

8

XCSE

Genmab A/S

13/06/2024

11:59:59 AM

1,836.0000

8

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

1

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

7

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

8

CEUX

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

5

TQEX

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

22

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

22

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

24

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

22

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

22

XCSE

Genmab A/S

13/06/2024

12:01:44 PM

1,836.5000

8

XCSE

Genmab A/S

13/06/2024

12:02:11 PM

1,836.0000

25

CEUX

Genmab A/S

13/06/2024

12:02:11 PM

1,836.0000

14

CEUX

Genmab A/S

13/06/2024

12:02:28 PM

1,836.5000

18

XCSE

Genmab A/S

13/06/2024

12:02:28 PM

1,836.5000

11

XCSE

Genmab A/S

13/06/2024

12:02:28 PM

1,836.5000

8

XCSE

Genmab A/S

13/06/2024

12:02:52 PM

1,836.5000

18

XCSE

Genmab A/S

13/06/2024

12:02:52 PM

1,836.5000

11

XCSE

Genmab A/S

13/06/2024

12:02:52 PM

1,836.5000

9

XCSE

Genmab A/S

13/06/2024

12:03:17 PM

1,836.5000

18

XCSE

Genmab A/S

13/06/2024

12:03:17 PM

1,836.5000

6

XCSE

Genmab A/S

13/06/2024

12:03:30 PM

1,836.5000

11

CEUX

Genmab A/S

13/06/2024

12:03:30 PM

1,836.5000

17

XCSE

Genmab A/S

13/06/2024

12:03:30 PM

1,836.5000

9

XCSE

Genmab A/S

13/06/2024

12:03:54 PM

1,836.5000

5

CEUX

Genmab A/S

13/06/2024

12:03:54 PM

1,836.5000

14

CEUX

Genmab A/S

13/06/2024

12:03:54 PM

1,836.5000

15

CEUX

Genmab A/S

13/06/2024

12:03:54 PM

1,836.5000

3

CEUX

Genmab A/S

13/06/2024

12:04:16 PM

1,836.5000

1

AQEU

Genmab A/S

13/06/2024

12:04:16 PM

1,836.5000

8

AQEU

Genmab A/S

13/06/2024

12:04:16 PM

1,836.5000

16

XCSE

Genmab A/S

13/06/2024

12:04:16 PM

1,836.5000

14

XCSE

Genmab A/S

13/06/2024

12:05:30 PM

1,836.5000

49

XCSE

Genmab A/S

13/06/2024

12:05:30 PM

1,836.5000

49

XCSE

Genmab A/S

13/06/2024

12:05:30 PM

1,836.5000

18

XCSE

Genmab A/S

13/06/2024

12:05:30 PM

1,836.5000

1

XCSE

Genmab A/S

13/06/2024

12:05:33 PM

1,836.0000

10

XCSE

Genmab A/S

13/06/2024

12:05:33 PM

1,836.0000

25

XCSE

47


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:06:19 PM

1,836.0000

10

CEUX

Genmab A/S

13/06/2024

12:06:19 PM

1,836.0000

11

CEUX

Genmab A/S

13/06/2024

12:06:19 PM

1,836.0000

14

CEUX

Genmab A/S

13/06/2024

12:06:19 PM

1,836.0000

1

CEUX

Genmab A/S

13/06/2024

12:06:38 PM

1,836.0000

31

CEUX

Genmab A/S

13/06/2024

12:06:38 PM

1,836.0000

3

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

31

CEUX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

31

CEUX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

15

CEUX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

19

CEUX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

9

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

4

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

1

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

4

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

34

XCSE

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

39

XCSE

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

33

XCSE

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

8

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

1

AQEU

Genmab A/S

13/06/2024

12:06:50 PM

1,835.5000

16

XCSE

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

7

XCSE

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

24

XCSE

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

8

CEUX

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

8

CEUX

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

5

TQEX

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

7

XCSE

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

31

XCSE

Genmab A/S

13/06/2024

12:08:29 PM

1,835.5000

21

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

21

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

3

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

21

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

21

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

19

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

2

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.5000

17

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

17

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

2

AQEU

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

18

XCSE

48


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

18

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

15

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

2

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

18

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

8

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

12

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

9

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

5

TQEX

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

42

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

42

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,835.0000

2

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

21

XCSE

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

20

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

20

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

2

AQEU

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

2

AQEU

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

5

TQEX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

5

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

6

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

9

CEUX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

2

AQEU

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

3

TQEX

Genmab A/S

13/06/2024

12:08:30 PM

1,834.5000

21

XCSE

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

44

XCSE

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

20

XCSE

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

39

CEUX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

11

CEUX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

9

CEUX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

20

CEUX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

12

CEUX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

6

AQEU

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

2

AQEU

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

2

AQEU

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

2

AQEU

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

5

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

6

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

5

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

5

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

6

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

5

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

6

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

5

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

5

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

20

XCSE

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

15

XCSE

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

10

TQEX

Genmab A/S

13/06/2024

12:10:01 PM

1,833.5000

30

TQEX

Genmab A/S

13/06/2024

12:19:25 PM

1,834.5000

63

XCSE

Genmab A/S

13/06/2024

12:19:25 PM

1,834.5000

63

XCSE

49


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:19:25 PM

1,834.5000

63

XCSE

Genmab A/S

13/06/2024

12:19:25 PM

1,834.5000

18

CEUX

Genmab A/S

13/06/2024

12:19:25 PM

1,834.5000

40

CEUX

Genmab A/S

13/06/2024

12:19:25 PM

1,834.5000

34

CEUX

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

23

XCSE

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

5

TQEX

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

23

XCSE

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

23

XCSE

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

59

XCSE

Genmab A/S

13/06/2024

12:19:46 PM

1,837.5000

52

XCSE

Genmab A/S

13/06/2024

12:19:50 PM

1,837.5000

12

XCSE

Genmab A/S

13/06/2024

12:19:50 PM

1,837.5000

40

XCSE

Genmab A/S

13/06/2024

12:19:50 PM

1,837.5000

23

XCSE

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

21

CEUX

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

9

CEUX

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

2

AQEU

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

7

AQEU

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

5

TQEX

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

5

TQEX

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

21

XCSE

Genmab A/S

13/06/2024

12:19:55 PM

1,834.5000

28

XCSE

Genmab A/S

13/06/2024

12:26:34 PM

1,835.0000

28

XCSE

Genmab A/S

13/06/2024

12:27:03 PM

1,835.5000

2

XCSE

Genmab A/S

13/06/2024

12:27:03 PM

1,835.5000

6

XCSE

Genmab A/S

13/06/2024

12:27:09 PM

1,835.5000

9

XCSE

Genmab A/S

13/06/2024

12:27:09 PM

1,835.5000

8

XCSE

Genmab A/S

13/06/2024

12:27:09 PM

1,835.5000

17

XCSE

Genmab A/S

13/06/2024

12:27:33 PM

1,835.5000

8

XCSE

Genmab A/S

13/06/2024

12:27:33 PM

1,835.5000

28

XCSE

Genmab A/S

13/06/2024

12:28:09 PM

1,835.5000

9

XCSE

Genmab A/S

13/06/2024

12:28:14 PM

1,835.5000

7

XCSE

Genmab A/S

13/06/2024

12:28:14 PM

1,835.5000

8

XCSE

Genmab A/S

13/06/2024

12:28:19 PM

1,834.5000

27

XCSE

Genmab A/S

13/06/2024

12:28:19 PM

1,834.5000

8

XCSE

Genmab A/S

13/06/2024

12:28:19 PM

1,834.5000

25

XCSE

Genmab A/S

13/06/2024

12:28:39 PM

1,834.5000

40

CEUX

Genmab A/S

13/06/2024

12:29:17 PM

1,835.5000

7

AQEU

Genmab A/S

13/06/2024

12:29:17 PM

1,835.5000

8

TQEX

Genmab A/S

13/06/2024

12:29:17 PM

1,835.5000

14

XCSE

Genmab A/S

13/06/2024

12:29:17 PM

1,835.5000

9

XCSE

Genmab A/S

13/06/2024

12:31:31 PM

1,836.5000

24

CEUX

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

18

XCSE

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

1

XCSE

50


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

18

XCSE

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

18

CEUX

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

5

TQEX

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

18

CEUX

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

7

CEUX

Genmab A/S

13/06/2024

12:32:27 PM

1,836.0000

2

AQEU

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

26

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

26

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

26

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

14

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

25

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

22

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

25

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

25

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

22

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

5

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

8

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

4

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

8

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

8

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

3

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

3

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

3

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

3

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

3

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

9

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

3

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

12

CEUX

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

2

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

24

XCSE

51


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

26

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

26

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

37

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

18

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

21

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

26

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

13

XCSE

Genmab A/S

13/06/2024

12:35:19 PM

1,839.5000

2

XCSE

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

13

CEUX

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

13

CEUX

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

11

XCSE

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

11

XCSE

Genmab A/S

13/06/2024

12:38:50 PM

1,840.0000

4

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

44

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

37

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

7

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

15

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

7

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

14

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

7

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

7

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

23

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

7

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

1

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

21

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

43

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

21

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

22

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

38

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

25

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.5000

14

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

26

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

8

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

48

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

20

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

21

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

13

CEUX

52


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

9

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

8

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

12

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

2

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

2

TQEX

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

22

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

22

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

14

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

12

CEUX

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

3

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

3

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

3

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

3

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

3

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

3

AQEU

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

23

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

22

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

23

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,839.0000

28

XCSE

Genmab A/S

13/06/2024

12:39:33 PM

1,838.5000

33

CEUX

Genmab A/S

13/06/2024

12:48:29 PM

1,837.5000

82

XCSE

Genmab A/S

13/06/2024

12:48:29 PM

1,837.5000

73

CEUX

Genmab A/S

13/06/2024

12:48:29 PM

1,837.5000

11

AQEU

Genmab A/S

13/06/2024

12:48:29 PM

1,837.5000

11

TQEX

Genmab A/S

13/06/2024

12:48:30 PM

1,837.0000

23

XCSE

Genmab A/S

13/06/2024

12:50:04 PM

1,838.0000

9

CEUX

Genmab A/S

13/06/2024

12:50:04 PM

1,838.0000

1

AQEU

Genmab A/S

13/06/2024

12:50:04 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

12:50:04 PM

1,838.0000

6

CEUX

Genmab A/S

13/06/2024

12:50:04 PM

1,838.0000

8

XCSE

Genmab A/S

13/06/2024

12:50:21 PM

1,838.0000

8

XCSE

Genmab A/S

13/06/2024

12:50:36 PM

1,838.0000

3

CEUX

Genmab A/S

13/06/2024

12:50:36 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

12:50:36 PM

1,838.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

35

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

35

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

37

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

35

XCSE

53


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

10

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

53

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

30

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

22

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

35

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

33

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

16

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

33

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

33

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

33

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

1

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

10

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

33

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

2

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

7

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

29

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

6

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

2

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

9

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

1

CEUX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

2

TQEX

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

8

XCSE

Genmab A/S

13/06/2024

12:55:10 PM

1,840.0000

38

XCSE

Genmab A/S

13/06/2024

1:00:42 PM

1,838.5000

39

AQEU

Genmab A/S

13/06/2024

1:00:49 PM

1,837.5000

45

XCSE

Genmab A/S

13/06/2024

1:01:51 PM

1,838.5000

19

CEUX

Genmab A/S

13/06/2024

1:01:58 PM

1,838.5000

11

CEUX

Genmab A/S

13/06/2024

1:01:58 PM

1,838.5000

12

CEUX

Genmab A/S

13/06/2024

1:02:01 PM

1,837.5000

32

XCSE

Genmab A/S

13/06/2024

1:02:01 PM

1,837.5000

28

XCSE

Genmab A/S

13/06/2024

1:02:59 PM

1,839.0000

8

TQEX

Genmab A/S

13/06/2024

1:02:59 PM

1,839.0000

10

TQEX

54


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

1:04:38 PM

1,839.0000

5

TQEX

Genmab A/S

13/06/2024

1:04:38 PM

1,839.0000

9

TQEX

Genmab A/S

13/06/2024

1:04:38 PM

1,839.0000

1

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

3

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

33

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

25

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

25

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

6

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

18

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

6

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

4

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

5

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

40

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

26

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

8

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

8

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

16

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

18

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

14

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

11

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

9

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

20

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

2

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

22

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

22

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

2

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

20

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

22

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

1

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

1

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

20

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

2

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

16

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

1

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

4

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

4

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

4

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

4

AQEU

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

3

AQEU

55


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

8

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

1

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

8

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

6

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

25

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

23

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

17

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

8

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

3

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

25

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

35

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

13

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

24

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

20

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

31

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

10

TQEX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

5

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

35

XCSE

Genmab A/S

13/06/2024

1:05:23 PM

1,837.5000

5

CEUX

Genmab A/S

13/06/2024

1:05:23 PM

1,838.0000

15

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

37

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

37

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

36

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

12

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

6

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

6

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

6

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

2

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

8

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

1

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

1

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

2

TQEX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

10

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

41

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

60

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

14

XCSE

56


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

1:12:25 PM

1,840.0000

17

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.0000

20

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.0000

37

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

56

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.0000

9

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

2

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

1

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

10

CEUX

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

23

AQEU

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

37

XCSE

Genmab A/S

13/06/2024

1:12:25 PM

1,839.5000

9

XCSE

Genmab A/S

13/06/2024

1:16:09 PM

1,839.0000

22

CEUX

Genmab A/S

13/06/2024

1:18:25 PM

1,839.0000

25

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

57

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

4

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

75

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

55

CEUX

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

68

CEUX

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

10

TQEX

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

9

AQEU

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

1

AQEU

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

1

AQEU

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

22

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

15

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

7

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

22

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

29

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

5

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

22

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,838.5000

3

XCSE

Genmab A/S

13/06/2024

1:18:42 PM

1,839.0000

22

XCSE

Genmab A/S

13/06/2024

1:24:42 PM

1,839.5000

31

TQEX

Genmab A/S

13/06/2024

1:24:42 PM

1,839.5000

7

TQEX

Genmab A/S

13/06/2024

1:25:09 PM

1,840.0000

17

AQEU

Genmab A/S

13/06/2024

1:25:09 PM

1,840.0000

8

AQEU

Genmab A/S

13/06/2024

1:25:09 PM

1,840.0000

2

AQEU

Genmab A/S

13/06/2024

1:25:55 PM

1,839.5000

20

TQEX

Genmab A/S

13/06/2024

1:25:55 PM

1,840.0000

9

TQEX

Genmab A/S

13/06/2024

1:25:55 PM

1,840.0000

8

TQEX

Genmab A/S

13/06/2024

1:25:55 PM

1,840.0000

2

TQEX

Genmab A/S

13/06/2024

1:25:55 PM

1,840.0000

9

XCSE

Genmab A/S

13/06/2024

1:25:55 PM

1,840.0000

16

XCSE

Genmab A/S

13/06/2024

1:25:55 PM

1,839.5000

4

XCSE

Genmab A/S

13/06/2024

1:25:55 PM

1,839.5000

39

XCSE

Genmab A/S

13/06/2024

1:25:55 PM

1,839.5000

12

XCSE

Genmab A/S

13/06/2024

1:25:55 PM

1,840.0000

4

AQEU

57


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

1:26:51 PM

1,840.0000

66

XCSE

Genmab A/S

13/06/2024

1:26:51 PM

1,840.0000

24

XCSE

Genmab A/S

13/06/2024

1:27:35 PM

1,840.0000

33

CEUX

Genmab A/S

13/06/2024

1:27:35 PM

1,840.0000

12

CEUX

Genmab A/S

13/06/2024

1:29:15 PM

1,840.0000

40

CEUX

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

16

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

16

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

13

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

14

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

13

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,841.0000

21

XCSE

Genmab A/S

13/06/2024

1:29:36 PM

1,840.0000

19

CEUX

Genmab A/S

13/06/2024

1:30:13 PM

1,840.5000

33

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

12

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

22

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

20

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

18

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

2

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

24

XCSE

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

20

CEUX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

5

TQEX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

3

CEUX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

10

CEUX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

5

TQEX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

7

CEUX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

2

AQEU

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

5

TQEX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

5

TQEX

Genmab A/S

13/06/2024

1:31:31 PM

1,840.5000

5

TQEX

Genmab A/S

13/06/2024

1:32:34 PM

1,840.5000

30

XCSE

Genmab A/S

13/06/2024

1:33:12 PM

1,840.0000

22

XCSE

Genmab A/S

13/06/2024

1:33:12 PM

1,840.0000

32

XCSE

Genmab A/S

13/06/2024

1:33:32 PM

1,841.0000

17

CEUX

Genmab A/S

13/06/2024

1:33:32 PM

1,841.0000

4

CEUX

Genmab A/S

13/06/2024

1:33:55 PM

1,840.0000

21

CEUX

Genmab A/S

13/06/2024

1:33:55 PM

1,840.0000

152

CEUX

Genmab A/S

13/06/2024

1:33:55 PM

1,840.0000

169

XCSE

Genmab A/S

13/06/2024

1:33:55 PM

1,840.0000

22

XCSE

Genmab A/S

13/06/2024

1:33:56 PM

1,840.0000

19

CEUX

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

2

CEUX

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

5

TQEX

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

22

XCSE

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

22

XCSE

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

2

XCSE

Genmab A/S

13/06/2024

1:34:04 PM

1,840.0000

14

CEUX

Genmab A/S

13/06/2024

1:35:52 PM

1,839.0000

11

XCSE

58


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

1:35:52 PM

1,839.0000

49

XCSE

Genmab A/S

13/06/2024

1:37:55 PM

1,839.0000

37

CEUX

Genmab A/S

13/06/2024

1:38:31 PM

1,839.0000

64

CEUX

Genmab A/S

13/06/2024

1:40:22 PM

1,840.5000

35

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

5

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

2

AQEU

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

XCSE

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

122

XCSE

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

1

XCSE

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

9

XCSE

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

XCSE

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

9

XCSE

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

10

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

22

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

22

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

22

CEUX

Genmab A/S

13/06/2024

1:41:06 PM

1,840.0000

16

CEUX

Genmab A/S

13/06/2024

1:44:42 PM

1,839.5000

7

CEUX

Genmab A/S

13/06/2024

1:44:42 PM

1,839.5000

13

CEUX

Genmab A/S

13/06/2024

1:44:42 PM

1,839.5000

4

AQEU

Genmab A/S

13/06/2024

1:45:29 PM

1,839.0000

49

XCSE

Genmab A/S

13/06/2024

1:45:29 PM

1,839.0000

44

CEUX

Genmab A/S

13/06/2024

1:47:14 PM

1,840.0000

11

TQEX

Genmab A/S

13/06/2024

1:47:14 PM

1,840.0000

6

TQEX

Genmab A/S

13/06/2024

1:47:14 PM

1,840.0000

36

TQEX

Genmab A/S

13/06/2024

1:47:14 PM

1,840.0000

8

TQEX

Genmab A/S

13/06/2024

1:47:28 PM

1,840.0000

19

TQEX

Genmab A/S

13/06/2024

1:47:28 PM

1,840.0000

1

TQEX

Genmab A/S

13/06/2024

1:47:41 PM

1,840.0000

1

TQEX

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

35

CEUX

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

35

CEUX

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

35

CEUX

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

18

CEUX

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

13

AQEU

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

39

XCSE

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

169

XCSE

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

6

XCSE

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

33

XCSE

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

35

CEUX

59


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

1:49:39 PM

1,839.0000

38

XCSE

Genmab A/S

13/06/2024

1:51:37 PM

1,839.5000

2

TQEX

Genmab A/S

13/06/2024

1:51:44 PM

1,839.5000

36

CEUX

Genmab A/S

13/06/2024

1:52:07 PM

1,839.5000

35

XCSE

Genmab A/S

13/06/2024

1:52:29 PM

1,839.5000

35

XCSE

Genmab A/S

13/06/2024

1:52:42 PM

1,839.5000

4

CEUX

Genmab A/S

13/06/2024

1:52:42 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

1:52:55 PM

1,839.5000

5

CEUX

Genmab A/S

13/06/2024

1:53:24 PM

1,839.5000

48

CEUX

Genmab A/S

13/06/2024

1:53:24 PM

1,839.5000

20

CEUX

Genmab A/S

13/06/2024

1:53:53 PM

1,839.5000

37

CEUX

Genmab A/S

13/06/2024

1:53:53 PM

1,839.0000

10

XCSE

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

33

CEUX

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

75

CEUX

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

15

CEUX

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

11

CEUX

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

8

AQEU

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

3

AQEU

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

52

CEUX

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

49

CEUX

Genmab A/S

13/06/2024

1:54:33 PM

1,839.5000

4

AQEU

Genmab A/S

13/06/2024

1:57:06 PM

1,840.0000

2

CEUX

Genmab A/S

13/06/2024

1:57:06 PM

1,840.0000

3

CEUX

Genmab A/S

13/06/2024

1:57:06 PM

1,840.0000

4

TQEX

Genmab A/S

13/06/2024

1:58:26 PM

1,840.5000

3

CEUX

Genmab A/S

13/06/2024

1:58:26 PM

1,840.5000

14

XCSE

Genmab A/S

13/06/2024

1:59:21 PM

1,840.5000

37

XCSE

Genmab A/S

13/06/2024

1:59:21 PM

1,840.5000

118

XCSE

Genmab A/S

13/06/2024

1:59:21 PM

1,840.5000

35

XCSE

Genmab A/S

13/06/2024

1:59:54 PM

1,841.0000

10

TQEX

Genmab A/S

13/06/2024

1:59:54 PM

1,841.0000

8

XCSE

Genmab A/S

13/06/2024

1:59:54 PM

1,841.0000

8

XCSE

Genmab A/S

13/06/2024

1:59:55 PM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

1:59:55 PM

1,841.0000

9

XCSE

Genmab A/S

13/06/2024

1:59:56 PM

1,841.0000

4

XCSE

Genmab A/S

13/06/2024

1:59:56 PM

1,841.0000

8

XCSE

Genmab A/S

13/06/2024

1:59:56 PM

1,841.0000

8

XCSE

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

8

AQEU

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

50

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

2

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

2

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

2

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

2

AQEU

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

12

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

30

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

6

CEUX

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

50

XCSE

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

7

XCSE

60


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

7

XCSE

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

6

AQEU

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

2

AQEU

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

23

XCSE

Genmab A/S

13/06/2024

2:01:18 PM

1,843.5000

16

XCSE

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

34

CEUX

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

37

XCSE

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

285

XCSE

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

3

XCSE

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

34

CEUX

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

17

CEUX

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

34

CEUX

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

34

CEUX

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

5

AQEU

Genmab A/S

13/06/2024

2:01:44 PM

1,843.5000

35

XCSE

Genmab A/S

13/06/2024

2:01:47 PM

1,843.5000

9

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.5000

28

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.5000

48

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.5000

11

AQEU

Genmab A/S

13/06/2024

2:03:49 PM

1,843.5000

84

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

21

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

29

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

14

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

21

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

17

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

26

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

12

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

21

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

5

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

20

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

20

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

5

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

3

AQEU

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

2

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

6

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

11

XCSE

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

20

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

3

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

8

CEUX

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

3

AQEU

Genmab A/S

13/06/2024

2:03:49 PM

1,843.0000

8

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

11

CEUX

61


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

6

CEUX

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

5

CEUX

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

6

CEUX

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

11

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

11

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

2

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

24

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

24

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

24

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,844.0000

12

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,843.5000

24

XCSE

Genmab A/S

13/06/2024

2:13:14 PM

1,843.5000

4

AQEU

Genmab A/S

13/06/2024

2:13:14 PM

1,843.5000

24

XCSE

Genmab A/S

13/06/2024

2:13:24 PM

1,843.0000

31

CEUX

Genmab A/S

13/06/2024

2:13:24 PM

1,843.0000

35

XCSE

Genmab A/S

13/06/2024

2:13:24 PM

1,843.0000

31

CEUX

Genmab A/S

13/06/2024

2:13:24 PM

1,843.0000

6

CEUX

Genmab A/S

13/06/2024

2:13:24 PM

1,843.0000

5

AQEU

Genmab A/S

13/06/2024

2:15:19 PM

1,843.5000

12

CEUX

Genmab A/S

13/06/2024

2:15:19 PM

1,843.5000

11

AQEU

Genmab A/S

13/06/2024

2:15:19 PM

1,843.5000

6

TQEX

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

8

CEUX

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

9

XCSE

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

11

XCSE

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:15:51 PM

1,844.0000

25

CEUX

Genmab A/S

13/06/2024

2:15:58 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:15:58 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

2:16:22 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:18:24 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:18:24 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:18:24 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:18:24 PM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

27

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

4

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

6

CEUX

62


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

4

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

5

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

8

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

10

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

1

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

2

AQEU

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

1

AQEU

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

1

CEUX

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

2

XCSE

Genmab A/S

13/06/2024

2:19:02 PM

1,844.0000

3

XCSE

Genmab A/S

13/06/2024

2:19:07 PM

1,844.0000

22

XCSE

Genmab A/S

13/06/2024

2:20:04 PM

1,844.0000

30

XCSE

Genmab A/S

13/06/2024

2:22:10 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:22:10 PM

1,844.0000

5

TQEX

Genmab A/S

13/06/2024

2:23:50 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:23:50 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:23:50 PM

1,844.0000

17

XCSE

Genmab A/S

13/06/2024

2:23:50 PM

1,844.0000

11

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

7

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

4

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

14

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

14

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

18

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

6

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

18

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

36

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

20

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

4

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

36

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

4

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

12

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

24

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

12

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

12

CEUX

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

3

AQEU

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

1

AQEU

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

3

AQEU

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

4

AQEU

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

5

AQEU

63


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

3

AQEU

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

18

XCSE

Genmab A/S

13/06/2024

2:24:05 PM

1,844.0000

39

XCSE

Genmab A/S

13/06/2024

2:24:09 PM

1,844.0000

4

CEUX

Genmab A/S

13/06/2024

2:24:09 PM

1,844.0000

24

CEUX

Genmab A/S

13/06/2024

2:24:52 PM

1,847.5000

40

TQEX

Genmab A/S

13/06/2024

2:24:52 PM

1,847.5000

40

TQEX

Genmab A/S

13/06/2024

2:24:52 PM

1,847.5000

19

TQEX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

28

CEUX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

28

CEUX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

7

CEUX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

28

CEUX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

4

AQEU

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

39

AQEU

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

30

XCSE

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

30

XCSE

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

30

XCSE

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

30

XCSE

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

28

CEUX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

7

CEUX

Genmab A/S

13/06/2024

2:25:04 PM

1,846.5000

11

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

29

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

15

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

49

XCSE

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

12

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

15

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

17

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

12

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

17

CEUX

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

7

AQEU

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

7

AQEU

Genmab A/S

13/06/2024

2:29:40 PM

1,846.0000

7

AQEU

Genmab A/S

13/06/2024

2:30:09 PM

1,847.5000

11

CEUX

Genmab A/S

13/06/2024

2:30:09 PM

1,847.5000

17

XCSE

Genmab A/S

13/06/2024

2:30:21 PM

1,847.5000

31

XCSE

Genmab A/S

13/06/2024

2:30:21 PM

1,847.5000

2

XCSE

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

4

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

6

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

64


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:30:24 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

3

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

6

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

6

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

9

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

7

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

5

XCSE

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

CEUX

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:31:10 PM

1,847.0000

12

XCSE

Genmab A/S

13/06/2024

2:32:29 PM

1,847.0000

11

XCSE

Genmab A/S

13/06/2024

2:32:29 PM

1,847.0000

11

CEUX

Genmab A/S

13/06/2024

2:32:29 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:32:29 PM

1,847.0000

2

AQEU

Genmab A/S

13/06/2024

2:32:29 PM

1,847.0000

11

XCSE

Genmab A/S

13/06/2024

2:33:52 PM

1,847.0000

11

XCSE

Genmab A/S

13/06/2024

2:33:52 PM

1,847.0000

10

CEUX

Genmab A/S

13/06/2024

2:33:52 PM

1,847.0000

9

XCSE

Genmab A/S

13/06/2024

2:34:45 PM

1,847.5000

19

XCSE

Genmab A/S

13/06/2024

2:35:40 PM

1,847.5000

2

XCSE

Genmab A/S

13/06/2024

2:35:58 PM

1,847.5000

13

XCSE

Genmab A/S

13/06/2024

2:35:58 PM

1,847.5000

52

XCSE

Genmab A/S

13/06/2024

2:35:58 PM

1,847.5000

23

XCSE

Genmab A/S

13/06/2024

2:35:58 PM

1,847.5000

47

CEUX

Genmab A/S

13/06/2024

2:35:58 PM

1,847.5000

22

CEUX

Genmab A/S

13/06/2024

2:35:58 PM

1,847.5000

18

CEUX

65


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:36:20 PM

1,847.5000

33

CEUX

Genmab A/S

13/06/2024

2:36:20 PM

1,847.5000

3

CEUX

Genmab A/S

13/06/2024

2:36:26 PM

1,847.0000

19

CEUX

Genmab A/S

13/06/2024

2:36:26 PM

1,847.0000

14

CEUX

Genmab A/S

13/06/2024

2:36:26 PM

1,847.0000

36

XCSE

Genmab A/S

13/06/2024

2:36:26 PM

1,847.0000

35

XCSE

Genmab A/S

13/06/2024

2:36:26 PM

1,847.0000

28

XCSE

Genmab A/S

13/06/2024

2:36:28 PM

1,847.0000

5

XCSE

Genmab A/S

13/06/2024

2:36:28 PM

1,847.0000

3

XCSE

Genmab A/S

13/06/2024

2:37:31 PM

1,847.0000

11

CEUX

Genmab A/S

13/06/2024

2:37:31 PM

1,847.0000

27

CEUX

Genmab A/S

13/06/2024

2:37:40 PM

1,846.0000

21

XCSE

Genmab A/S

13/06/2024

2:37:40 PM

1,846.0000

20

CEUX

Genmab A/S

13/06/2024

2:37:40 PM

1,846.0000

14

CEUX

Genmab A/S

13/06/2024

2:38:07 PM

1,847.0000

5

AQEU

Genmab A/S

13/06/2024

2:38:07 PM

1,847.0000

1

AQEU

Genmab A/S

13/06/2024

2:38:21 PM

1,847.0000

13

AQEU

Genmab A/S

13/06/2024

2:38:21 PM

1,847.0000

1

AQEU

Genmab A/S

13/06/2024

2:38:21 PM

1,847.0000

9

AQEU

Genmab A/S

13/06/2024

2:38:21 PM

1,847.0000

8

AQEU

Genmab A/S

13/06/2024

2:38:28 PM

1,847.0000

1

AQEU

Genmab A/S

13/06/2024

2:40:12 PM

1,847.0000

38

XCSE

Genmab A/S

13/06/2024

2:40:12 PM

1,847.0000

13

XCSE

Genmab A/S

13/06/2024

2:40:12 PM

1,847.0000

13

XCSE

Genmab A/S

13/06/2024

2:40:12 PM

1,847.0000

24

XCSE

Genmab A/S

13/06/2024

2:41:14 PM

1,847.0000

13

XCSE

Genmab A/S

13/06/2024

2:41:14 PM

1,847.0000

24

XCSE

Genmab A/S

13/06/2024

2:41:14 PM

1,847.0000

53

XCSE

Genmab A/S

13/06/2024

2:41:14 PM

1,847.0000

31

XCSE

Genmab A/S

13/06/2024

2:41:14 PM

1,847.0000

21

XCSE

Genmab A/S

13/06/2024

2:41:16 PM

1,847.0000

13

XCSE

Genmab A/S

13/06/2024

2:41:16 PM

1,847.0000

24

XCSE

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

21

XCSE

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

45

XCSE

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

30

XCSE

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

20

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

41

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

27

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

5

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

20

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

41

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

7

CEUX

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

3

AQEU

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

6

AQEU

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

4

AQEU

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

21

XCSE

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

45

XCSE

Genmab A/S

13/06/2024

2:42:14 PM

1,846.0000

30

XCSE

Genmab A/S

13/06/2024

2:42:15 PM

1,846.0000

3

AQEU

66


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:42:15 PM

1,846.0000

4

AQEU

Genmab A/S

13/06/2024

2:42:17 PM

1,846.0000

20

CEUX

Genmab A/S

13/06/2024

2:42:17 PM

1,846.0000

19

CEUX

Genmab A/S

13/06/2024

2:43:08 PM

1,846.0000

11

CEUX

Genmab A/S

13/06/2024

2:43:08 PM

1,846.0000

5

AQEU

Genmab A/S

13/06/2024

2:43:08 PM

1,846.0000

1

AQEU

Genmab A/S

13/06/2024

2:43:08 PM

1,846.0000

6

TQEX

Genmab A/S

13/06/2024

2:43:24 PM

1,846.0000

34

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

44

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

6

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

50

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

53

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

44

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

1

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

6

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

39

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

7

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

11

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

7

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

10

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

5

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

2

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

5

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

39

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

5

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

39

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

7

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

22

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

9

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

22

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

7

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

4

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

41

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

22

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

50

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

50

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

50

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

44

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

44

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

3

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

50

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

24

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

3

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

11

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.5000

1

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

38

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

25

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

102

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

35

CEUX

67


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

15

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

9

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

5

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

5

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

5

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

35

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

24

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

3

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

5

AQEU

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

35

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

6

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

35

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

6

CEUX

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

38

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

25

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

9

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

26

XCSE

Genmab A/S

13/06/2024

2:43:28 PM

1,845.0000

10

XCSE

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

21

CEUX

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

22

CEUX

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

4

AQEU

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

4

AQEU

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

8

XCSE

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

15

XCSE

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

1

XCSE

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

24

XCSE

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

11

CEUX

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

2:50:04 PM

1,841.0000

22

CEUX

Genmab A/S

13/06/2024

2:52:24 PM

1,840.5000

21

CEUX

Genmab A/S

13/06/2024

2:52:24 PM

1,840.5000

9

XCSE

Genmab A/S

13/06/2024

2:52:26 PM

1,840.5000

20

CEUX

Genmab A/S

13/06/2024

2:52:26 PM

1,840.5000

1

CEUX

Genmab A/S

13/06/2024

2:52:26 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

2:52:26 PM

1,840.5000

14

XCSE

Genmab A/S

13/06/2024

2:52:30 PM

1,840.5000

23

XCSE

Genmab A/S

13/06/2024

2:55:29 PM

1,842.0000

30

TQEX

Genmab A/S

13/06/2024

2:57:09 PM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

2:57:09 PM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

2:57:40 PM

1,842.0000

7

XCSE

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

2

AQEU

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

2

AQEU

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

XCSE

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

XCSE

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

1

CEUX

68


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

CEUX

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

2

AQEU

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

2

AQEU

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

XCSE

Genmab A/S

13/06/2024

2:58:24 PM

1,841.5000

11

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

33

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

9

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

38

CEUX

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

38

CEUX

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

10

CEUX

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

6

AQEU

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

25

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

17

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

42

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

7

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

24

XCSE

Genmab A/S

13/06/2024

2:59:58 PM

1,841.5000

47

XCSE

Genmab A/S

13/06/2024

2:59:59 PM

1,841.0000

20

CEUX

Genmab A/S

13/06/2024

2:59:59 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

2:59:59 PM

1,841.0000

21

XCSE

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

20

CEUX

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

21

XCSE

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

37

XCSE

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

21

XCSE

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

41

XCSE

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

20

CEUX

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

2

AQEU

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

3:00:14 PM

1,840.5000

3

AQEU

Genmab A/S

13/06/2024

3:01:01 PM

1,841.5000

38

CEUX

Genmab A/S

13/06/2024

3:01:02 PM

1,841.0000

18

CEUX

Genmab A/S

13/06/2024

3:01:02 PM

1,841.0000

12

CEUX

Genmab A/S

13/06/2024

3:01:02 PM

1,841.0000

10

XCSE

Genmab A/S

13/06/2024

3:01:02 PM

1,841.0000

28

CEUX

Genmab A/S

13/06/2024

3:01:02 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:01:02 PM

1,841.0000

3

XCSE

Genmab A/S

13/06/2024

3:01:05 PM

1,840.5000

27

CEUX

Genmab A/S

13/06/2024

3:01:51 PM

1,841.0000

5

AQEU

Genmab A/S

13/06/2024

3:01:51 PM

1,841.0000

13

AQEU

Genmab A/S

13/06/2024

3:01:51 PM

1,841.0000

8

AQEU

Genmab A/S

13/06/2024

3:01:51 PM

1,841.0000

2

AQEU

Genmab A/S

13/06/2024

3:02:02 PM

1,841.0000

14

AQEU

Genmab A/S

13/06/2024

3:02:02 PM

1,841.0000

8

AQEU

Genmab A/S

13/06/2024

3:02:02 PM

1,841.0000

1

AQEU

Genmab A/S

13/06/2024

3:02:12 PM

1,841.0000

17

AQEU

69


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:02:36 PM

1,841.0000

2

AQEU

Genmab A/S

13/06/2024

3:02:36 PM

1,841.0000

5

AQEU

Genmab A/S

13/06/2024

3:02:44 PM

1,841.0000

7

TQEX

Genmab A/S

13/06/2024

3:02:44 PM

1,841.0000

4

TQEX

Genmab A/S

13/06/2024

3:02:44 PM

1,841.0000

2

TQEX

Genmab A/S

13/06/2024

3:02:44 PM

1,841.0000

10

TQEX

Genmab A/S

13/06/2024

3:03:25 PM

1,840.5000

10

CEUX

Genmab A/S

13/06/2024

3:03:25 PM

1,840.5000

2

AQEU

Genmab A/S

13/06/2024

3:03:25 PM

1,840.5000

10

XCSE

Genmab A/S

13/06/2024

3:03:25 PM

1,840.5000

10

CEUX

Genmab A/S

13/06/2024

3:03:25 PM

1,840.5000

2

AQEU

Genmab A/S

13/06/2024

3:03:25 PM

1,840.5000

10

XCSE

Genmab A/S

13/06/2024

3:04:55 PM

1,841.0000

13

XCSE

Genmab A/S

13/06/2024

3:04:57 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:05:06 PM

1,841.5000

3

XCSE

Genmab A/S

13/06/2024

3:05:06 PM

1,841.5000

17

XCSE

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

21

CEUX

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

23

XCSE

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

21

CEUX

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

21

CEUX

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

13

XCSE

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

10

XCSE

Genmab A/S

13/06/2024

3:05:06 PM

1,841.0000

13

XCSE

Genmab A/S

13/06/2024

3:05:07 PM

1,841.0000

21

CEUX

Genmab A/S

13/06/2024

3:05:07 PM

1,841.0000

17

XCSE

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

19

CEUX

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

6

XCSE

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

3

XCSE

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

23

XCSE

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

5

XCSE

Genmab A/S

13/06/2024

3:05:12 PM

1,841.0000

31

CEUX

Genmab A/S

13/06/2024

3:05:15 PM

1,841.0000

5

CEUX

Genmab A/S

13/06/2024

3:05:15 PM

1,841.0000

13

CEUX

Genmab A/S

13/06/2024

3:05:15 PM

1,841.0000

9

AQEU

Genmab A/S

13/06/2024

3:05:15 PM

1,841.0000

11

AQEU

Genmab A/S

13/06/2024

3:05:29 PM

1,841.0000

2

CEUX

Genmab A/S

13/06/2024

3:05:29 PM

1,841.0000

4

CEUX

Genmab A/S

13/06/2024

3:05:29 PM

1,841.0000

16

CEUX

Genmab A/S

13/06/2024

3:05:40 PM

1,841.0000

5

CEUX

Genmab A/S

13/06/2024

3:06:22 PM

1,841.5000

6

AQEU

Genmab A/S

13/06/2024

3:06:23 PM

1,841.5000

36

CEUX

Genmab A/S

13/06/2024

3:06:23 PM

1,841.5000

6

AQEU

Genmab A/S

13/06/2024

3:06:23 PM

1,841.5000

26

CEUX

Genmab A/S

13/06/2024

3:06:23 PM

1,841.5000

6

AQEU

Genmab A/S

13/06/2024

3:06:23 PM

1,841.5000

25

AQEU

Genmab A/S

13/06/2024

3:06:33 PM

1,841.5000

40

CEUX

70


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

80

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

4

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

6

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

5

XCSE

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

11

XCSE

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

16

XCSE

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

10

XCSE

Genmab A/S

13/06/2024

3:06:50 PM

1,841.0000

14

CEUX

Genmab A/S

13/06/2024

3:06:51 PM

1,841.0000

9

CEUX

Genmab A/S

13/06/2024

3:06:51 PM

1,841.0000

5

CEUX

Genmab A/S

13/06/2024

3:06:51 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:06:51 PM

1,841.0000

6

XCSE

Genmab A/S

13/06/2024

3:06:51 PM

1,841.0000

46

XCSE

Genmab A/S

13/06/2024

3:09:13 PM

1,841.0000

40

CEUX

Genmab A/S

13/06/2024

3:09:13 PM

1,841.0000

6

AQEU

Genmab A/S

13/06/2024

3:09:13 PM

1,841.0000

10

XCSE

Genmab A/S

13/06/2024

3:10:08 PM

1,841.5000

86

XCSE

Genmab A/S

13/06/2024

3:12:12 PM

1,843.5000

10

CEUX

Genmab A/S

13/06/2024

3:12:12 PM

1,844.0000

19

CEUX

Genmab A/S

13/06/2024

3:12:12 PM

1,844.0000

16

CEUX

Genmab A/S

13/06/2024

3:12:12 PM

1,844.0000

5

CEUX

Genmab A/S

13/06/2024

3:12:12 PM

1,844.0000

8

AQEU

Genmab A/S

13/06/2024

3:12:12 PM

1,844.0000

1

AQEU

Genmab A/S

13/06/2024

3:12:13 PM

1,844.0000

11

CEUX

Genmab A/S

13/06/2024

3:12:13 PM

1,844.0000

16

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

24

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

29

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

7

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

2

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

7

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

16

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

9

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

71


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

38

CEUX

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

36

CEUX

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

6

AQEU

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

43

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

31

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

3

XCSE

Genmab A/S

13/06/2024

3:12:51 PM

1,844.0000

40

XCSE

Genmab A/S

13/06/2024

3:16:23 PM

1,842.5000

11

CEUX

Genmab A/S

13/06/2024

3:16:23 PM

1,842.5000

2

AQEU

Genmab A/S

13/06/2024

3:16:23 PM

1,842.5000

11

CEUX

Genmab A/S

13/06/2024

3:16:23 PM

1,842.5000

12

XCSE

Genmab A/S

13/06/2024

3:16:24 PM

1,842.5000

11

CEUX

Genmab A/S

13/06/2024

3:16:24 PM

1,842.5000

2

AQEU

Genmab A/S

13/06/2024

3:16:24 PM

1,842.5000

12

XCSE

Genmab A/S

13/06/2024

3:16:24 PM

1,842.5000

3

CEUX

Genmab A/S

13/06/2024

3:17:03 PM

1,843.0000

24

CEUX

Genmab A/S

13/06/2024

3:17:03 PM

1,843.0000

9

AQEU

Genmab A/S

13/06/2024

3:17:07 PM

1,843.0000

36

XCSE

Genmab A/S

13/06/2024

3:17:08 PM

1,843.0000

30

CEUX

Genmab A/S

13/06/2024

3:17:08 PM

1,843.0000

4

CEUX

Genmab A/S

13/06/2024

3:17:08 PM

1,843.0000

14

XCSE

Genmab A/S

13/06/2024

3:17:38 PM

1,843.5000

19

XCSE

Genmab A/S

13/06/2024

3:17:38 PM

1,843.5000

15

XCSE

Genmab A/S

13/06/2024

3:18:01 PM

1,843.5000

9

XCSE

Genmab A/S

13/06/2024

3:18:02 PM

1,843.0000

44

CEUX

Genmab A/S

13/06/2024

3:18:02 PM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

3:18:02 PM

1,843.0000

7

XCSE

Genmab A/S

13/06/2024

3:18:02 PM

1,843.0000

43

XCSE

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

44

CEUX

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

50

XCSE

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

44

CEUX

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

50

XCSE

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

11

XCSE

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

15

CEUX

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

7

AQEU

Genmab A/S

13/06/2024

3:18:04 PM

1,843.0000

1

CEUX

Genmab A/S

13/06/2024

3:18:11 PM

1,842.0000

7

XCSE

Genmab A/S

13/06/2024

3:18:11 PM

1,842.0000

14

XCSE

Genmab A/S

13/06/2024

3:18:11 PM

1,842.0000

34

XCSE

Genmab A/S

13/06/2024

3:18:11 PM

1,842.0000

19

CEUX

Genmab A/S

13/06/2024

3:18:15 PM

1,842.0000

21

XCSE

Genmab A/S

13/06/2024

3:19:43 PM

1,841.0000

11

CEUX

Genmab A/S

13/06/2024

3:19:43 PM

1,841.0000

2

AQEU

Genmab A/S

13/06/2024

3:19:43 PM

1,841.0000

12

XCSE

Genmab A/S

13/06/2024

3:20:21 PM

1,841.0000

30

CEUX

72


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:20:21 PM

1,841.0000

3

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

22

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

103

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

34

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

76

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

20

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

20

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

20

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

20

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

20

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

13

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

3

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,840.0000

40

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

30

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

30

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

10

CEUX

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

2

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,841.0000

38

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

21

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

15

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

50

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

15

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

141

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

5

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

16

AQEU

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

5

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,839.0000

2

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

3:20:22 PM

1,838.5000

45

XCSE

Genmab A/S

13/06/2024

3:20:23 PM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

3:20:23 PM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

3:20:24 PM

1,838.5000

41

XCSE

Genmab A/S

13/06/2024

3:20:24 PM

1,838.5000

18

XCSE

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

22

XCSE

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

39

XCSE

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

21

CEUX

Genmab A/S

13/06/2024

3:25:04 PM

1,837.5000

3

AQEU

Genmab A/S

13/06/2024

3:26:03 PM

1,836.5000

22

CEUX

Genmab A/S

13/06/2024

3:26:03 PM

1,836.5000

4

AQEU

Genmab A/S

13/06/2024

3:26:03 PM

1,836.5000

24

XCSE

Genmab A/S

13/06/2024

3:26:03 PM

1,836.5000

24

XCSE

73


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:26:05 PM

1,836.5000

22

CEUX

Genmab A/S

13/06/2024

3:26:05 PM

1,836.5000

17

XCSE

Genmab A/S

13/06/2024

3:26:05 PM

1,836.5000

15

CEUX

Genmab A/S

13/06/2024

3:26:05 PM

1,836.5000

27

XCSE

Genmab A/S

13/06/2024

3:26:05 PM

1,836.5000

12

XCSE

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

58

CEUX

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

48

CEUX

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

10

CEUX

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

5

CEUX

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

9

AQEU

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

9

AQEU

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

65

XCSE

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

28

XCSE

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

37

XCSE

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

4

XCSE

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

6

XCSE

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

5

CEUX

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

9

AQEU

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

9

AQEU

Genmab A/S

13/06/2024

3:30:01 PM

1,835.0000

7

AQEU

Genmab A/S

13/06/2024

3:30:04 PM

1,833.5000

10

XCSE

Genmab A/S

13/06/2024

3:32:47 PM

1,833.0000

5

XCSE

Genmab A/S

13/06/2024

3:33:18 PM

1,833.5000

127

AQEU

Genmab A/S

13/06/2024

3:33:18 PM

1,833.5000

37

AQEU

Genmab A/S

13/06/2024

3:33:19 PM

1,833.5000

47

AQEU

Genmab A/S

13/06/2024

3:33:32 PM

1,833.0000

30

CEUX

Genmab A/S

13/06/2024

3:33:32 PM

1,833.0000

43

CEUX

Genmab A/S

13/06/2024

3:33:32 PM

1,833.0000

11

AQEU

Genmab A/S

13/06/2024

3:33:32 PM

1,833.0000

82

XCSE

Genmab A/S

13/06/2024

3:33:35 PM

1,832.5000

40

XCSE

Genmab A/S

13/06/2024

3:33:35 PM

1,832.5000

40

XCSE

Genmab A/S

13/06/2024

3:33:35 PM

1,832.5000

40

XCSE

Genmab A/S

13/06/2024

3:36:18 PM

1,833.0000

1

AQEU

Genmab A/S

13/06/2024

3:36:25 PM

1,834.0000

16

XCSE

Genmab A/S

13/06/2024

3:36:25 PM

1,834.0000

20

XCSE

Genmab A/S

13/06/2024

3:36:36 PM

1,834.0000

20

XCSE

Genmab A/S

13/06/2024

3:36:36 PM

1,834.0000

18

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

101

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

116

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

101

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

63

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

12

AQEU

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

13

AQEU

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

13

AQEU

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

53

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

95

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

41

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

4

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,833.0000

4

AQEU

74


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:36:44 PM

1,832.5000

36

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,832.5000

10

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,832.5000

35

XCSE

Genmab A/S

13/06/2024

3:36:44 PM

1,832.5000

46

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

15

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

31

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

10

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

31

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

15

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

15

XCSE

Genmab A/S

13/06/2024

3:36:45 PM

1,832.5000

30

XCSE

Genmab A/S

13/06/2024

3:40:18 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:40:18 PM

1,832.5000

71

XCSE

Genmab A/S

13/06/2024

3:40:18 PM

1,832.5000

3

XCSE

Genmab A/S

13/06/2024

3:41:19 PM

1,832.5000

23

XCSE

Genmab A/S

13/06/2024

3:41:19 PM

1,832.5000

23

XCSE

Genmab A/S

13/06/2024

3:41:19 PM

1,832.5000

3

XCSE

Genmab A/S

13/06/2024

3:41:19 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

17

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

9

XCSE

Genmab A/S

13/06/2024

3:41:20 PM

1,832.5000

26

XCSE

Genmab A/S

13/06/2024

3:41:21 PM

1,832.0000

35

XCSE

Genmab A/S

13/06/2024

3:41:21 PM

1,832.0000

24

XCSE

Genmab A/S

13/06/2024

3:41:21 PM

1,832.0000

250

XCSE

Genmab A/S

13/06/2024

3:41:21 PM

1,832.0000

5

AQEU

Genmab A/S

13/06/2024

3:41:21 PM

1,832.0000

38

XCSE

Genmab A/S

13/06/2024

3:41:22 PM

1,831.5000

45

XCSE

Genmab A/S

13/06/2024

3:41:22 PM

1,831.5000

45

XCSE

Genmab A/S

13/06/2024

3:42:11 PM

1,829.0000

6

AQEU

Genmab A/S

13/06/2024

3:42:11 PM

1,829.0000

41

XCSE

Genmab A/S

13/06/2024

3:42:11 PM

1,829.0000

20

XCSE

Genmab A/S

13/06/2024

3:44:58 PM

1,828.5000

9

AQEU

Genmab A/S

13/06/2024

3:44:58 PM

1,828.5000

2

AQEU

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

56

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

39

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

1

AQEU

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

37

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

6

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

13

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

14

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

22

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

20

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

50

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

19

XCSE

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

39

XCSE

75


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:45:05 PM

1,828.5000

3

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

45

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

99

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

99

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

37

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

10

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

45

XCSE

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

18

AQEU

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

18

AQEU

Genmab A/S

13/06/2024

3:46:44 PM

1,828.0000

7

AQEU

Genmab A/S

13/06/2024

3:48:28 PM

1,829.5000

39

CEUX

Genmab A/S

13/06/2024

3:48:52 PM

1,830.0000

16

XCSE

Genmab A/S

13/06/2024

3:48:52 PM

1,830.0000

29

XCSE

Genmab A/S

13/06/2024

3:48:56 PM

1,830.5000

11

CEUX

Genmab A/S

13/06/2024

3:48:56 PM

1,830.5000

12

CEUX

Genmab A/S

13/06/2024

3:48:56 PM

1,830.5000

14

CEUX

Genmab A/S

13/06/2024

3:49:09 PM

1,830.5000

12

CEUX

Genmab A/S

13/06/2024

3:49:09 PM

1,830.5000

20

CEUX

Genmab A/S

13/06/2024

3:49:16 PM

1,830.0000

71

XCSE

Genmab A/S

13/06/2024

3:49:16 PM

1,830.0000

10

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

13

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

115

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

35

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

115

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

2

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

11

XCSE

Genmab A/S

13/06/2024

3:49:32 PM

1,829.5000

13

XCSE

Genmab A/S

13/06/2024

3:49:33 PM

1,829.5000

16

AQEU

Genmab A/S

13/06/2024

3:49:33 PM

1,829.5000

16

AQEU

Genmab A/S

13/06/2024

3:49:33 PM

1,829.5000

12

AQEU

Genmab A/S

13/06/2024

3:49:33 PM

1,829.5000

13

XCSE

Genmab A/S

13/06/2024

3:49:33 PM

1,829.5000

36

XCSE

Genmab A/S

13/06/2024

3:50:42 PM

1,830.0000

41

XCSE

Genmab A/S

13/06/2024

3:51:44 PM

1,830.5000

125

XCSE

Genmab A/S

13/06/2024

3:51:44 PM

1,830.5000

52

XCSE

Genmab A/S

13/06/2024

3:51:44 PM

1,830.5000

73

XCSE

Genmab A/S

13/06/2024

3:51:44 PM

1,830.5000

52

XCSE

Genmab A/S

13/06/2024

3:51:44 PM

1,830.5000

125

XCSE

Genmab A/S

13/06/2024

3:51:44 PM

1,830.5000

96

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

18

AQEU

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

15

AQEU

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

17

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

46

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

77

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

46

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

76

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

8

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

50

XCSE

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

14

XCSE

76


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

2

AQEU

Genmab A/S

13/06/2024

3:53:25 PM

1,829.0000

8

XCSE

Genmab A/S

13/06/2024

3:55:40 PM

1,827.5000

15

AQEU

Genmab A/S

13/06/2024

3:55:40 PM

1,827.5000

10

AQEU

Genmab A/S

13/06/2024

3:55:40 PM

1,827.5000

120

XCSE

Genmab A/S

13/06/2024

3:55:40 PM

1,827.5000

44

XCSE

Genmab A/S

13/06/2024

3:55:40 PM

1,827.5000

4

XCSE

Genmab A/S

13/06/2024

3:55:50 PM

1,827.0000

13

AQEU

Genmab A/S

13/06/2024

3:55:50 PM

1,827.0000

45

XCSE

Genmab A/S

13/06/2024

3:55:50 PM

1,827.0000

55

XCSE

Genmab A/S

13/06/2024

3:55:50 PM

1,826.5000

48

XCSE

Genmab A/S

13/06/2024

3:55:50 PM

1,826.5000

122

XCSE

Genmab A/S

13/06/2024

3:55:51 PM

1,826.5000

48

XCSE

Genmab A/S

13/06/2024

3:55:51 PM

1,826.5000

12

XCSE

Genmab A/S

13/06/2024

3:55:51 PM

1,826.5000

36

XCSE

Genmab A/S

13/06/2024

3:58:03 PM

1,827.0000

3

AQEU

Genmab A/S

13/06/2024

3:58:03 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

3:58:03 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

3:58:03 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

26

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

3

AQEU

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

16

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

21

XCSE

Genmab A/S

13/06/2024

3:58:13 PM

1,827.5000

19

XCSE

Genmab A/S

13/06/2024

3:59:16 PM

1,827.0000

3

AQEU

Genmab A/S

13/06/2024

3:59:16 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

3:59:16 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

3:59:16 PM

1,827.0000

2

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.5000

19

AQEU

Genmab A/S

13/06/2024

4:00:06 PM

1,829.5000

10

AQEU

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

48

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.5000

229

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

48

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

48

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

9

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

39

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

39

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

9

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

39

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

9

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

9

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,829.0000

14

XCSE

Genmab A/S

13/06/2024

4:00:06 PM

1,828.5000

41

XCSE

77


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

41

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

26

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

6

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

9

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

41

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

41

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

41

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

41

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

28

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

13

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.5000

1

XCSE

Genmab A/S

13/06/2024

4:00:07 PM

1,828.0000

49

XCSE

Genmab A/S

13/06/2024

4:00:08 PM

1,828.0000

49

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

10

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

6

AQEU

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

32

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

6

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

22

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

6

AQEU

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

20

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

113

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

6

AQEU

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

11

XCSE

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

9

AQEU

Genmab A/S

13/06/2024

4:01:16 PM

1,824.5000

2

AQEU

Genmab A/S

13/06/2024

4:05:22 PM

1,825.5000

111

XCSE

Genmab A/S

13/06/2024

4:05:22 PM

1,825.5000

150

XCSE

Genmab A/S

13/06/2024

4:05:22 PM

1,825.0000

10

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

8

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

145

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

104

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

23

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

23

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

3

AQEU

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

1

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

22

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

1

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

23

XCSE

Genmab A/S

13/06/2024

4:07:39 PM

1,828.0000

17

XCSE

Genmab A/S

13/06/2024

4:07:40 PM

1,828.0000

23

XCSE

Genmab A/S

13/06/2024

4:07:40 PM

1,828.0000

3

AQEU

Genmab A/S

13/06/2024

4:07:40 PM

1,828.0000

23

XCSE

Genmab A/S

13/06/2024

4:07:40 PM

1,828.0000

2

XCSE

Genmab A/S

13/06/2024

4:07:40 PM

1,828.0000

23

XCSE

Genmab A/S

13/06/2024

4:08:16 PM

1,828.0000

22

XCSE

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

23

XCSE

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

18

XCSE

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

12

AQEU

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

47

XCSE

78


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

47

XCSE

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

41

XCSE

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

5

XCSE

Genmab A/S

13/06/2024

4:08:49 PM

1,827.5000

31

AQEU

Genmab A/S

13/06/2024

4:10:29 PM

1,826.0000

5

XCSE

Genmab A/S

13/06/2024

4:10:29 PM

1,826.0000

19

XCSE

Genmab A/S

13/06/2024

4:11:24 PM

1,826.5000

8

CEUX

Genmab A/S

13/06/2024

4:11:47 PM

1,827.0000

24

XCSE

Genmab A/S

13/06/2024

4:11:49 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

4:11:49 PM

1,827.0000

21

XCSE

Genmab A/S

13/06/2024

4:11:49 PM

1,827.0000

9

XCSE

Genmab A/S

13/06/2024

4:11:50 PM

1,827.0000

6

AQEU

Genmab A/S

13/06/2024

4:11:50 PM

1,827.0000

8

AQEU

Genmab A/S

13/06/2024

4:11:50 PM

1,827.0000

2

XCSE

Genmab A/S

13/06/2024

4:11:57 PM

1,828.0000

13

XCSE

Genmab A/S

13/06/2024

4:11:57 PM

1,828.0000

16

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

40

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

52

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

93

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

7

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

71

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

71

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

74

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

10

XCSE

Genmab A/S

13/06/2024

4:12:12 PM

1,828.0000

33

XCSE

Genmab A/S

13/06/2024

4:12:13 PM

1,828.0000

7

XCSE

Genmab A/S

13/06/2024

4:13:15 PM

1,830.0000

21

XCSE

Genmab A/S

13/06/2024

4:13:15 PM

1,830.0000

21

XCSE

Genmab A/S

13/06/2024

4:13:15 PM

1,830.0000

10

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

11

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

11

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

10

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

1

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

10

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

11

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

21

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

21

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

21

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

21

XCSE

Genmab A/S

13/06/2024

4:13:16 PM

1,830.0000

19

XCSE

Genmab A/S

13/06/2024

4:13:17 PM

1,829.0000

5

XCSE

Genmab A/S

13/06/2024

4:14:00 PM

1,827.0000

25

XCSE

Genmab A/S

13/06/2024

4:14:00 PM

1,827.0000

14

XCSE

Genmab A/S

13/06/2024

4:14:00 PM

1,827.0000

11

XCSE

Genmab A/S

13/06/2024

4:14:01 PM

1,827.0000

25

XCSE

Genmab A/S

13/06/2024

4:14:25 PM

1,826.5000

9

XCSE

Genmab A/S

13/06/2024

4:14:25 PM

1,826.5000

44

XCSE

Genmab A/S

13/06/2024

4:14:54 PM

1,826.5000

1

XCSE

Genmab A/S

13/06/2024

4:15:30 PM

1,826.5000

50

XCSE

79


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:15:30 PM

1,826.5000

94

XCSE

Genmab A/S

13/06/2024

4:15:30 PM

1,826.5000

50

XCSE

Genmab A/S

13/06/2024

4:15:30 PM

1,826.5000

95

XCSE

Genmab A/S

13/06/2024

4:15:30 PM

1,826.5000

50

XCSE

Genmab A/S

13/06/2024

4:15:30 PM

1,826.5000

11

XCSE

Genmab A/S

13/06/2024

4:16:48 PM

1,827.5000

1

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

10

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

45

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

55

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

1

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

54

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

56

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

28

XCSE

Genmab A/S

13/06/2024

4:17:24 PM

1,827.5000

28

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

1

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

10

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

49

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

20

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

1

XCSE

Genmab A/S

13/06/2024

4:18:27 PM

1,828.0000

21

XCSE

Genmab A/S

13/06/2024

4:18:28 PM

1,827.5000

50

XCSE

Genmab A/S

13/06/2024

4:18:28 PM

1,827.5000

195

XCSE

Genmab A/S

13/06/2024

4:18:29 PM

1,827.0000

44

XCSE

Genmab A/S

13/06/2024

4:18:29 PM

1,827.0000

44

XCSE

Genmab A/S

13/06/2024

4:18:29 PM

1,827.0000

40

XCSE

Genmab A/S

13/06/2024

4:20:34 PM

1,827.0000

12

XCSE

Genmab A/S

13/06/2024

4:20:34 PM

1,827.0000

11

XCSE

Genmab A/S

13/06/2024

4:20:34 PM

1,827.0000

23

XCSE

Genmab A/S

13/06/2024

4:20:40 PM

1,829.5000

52

XCSE

Genmab A/S

13/06/2024

4:20:40 PM

1,829.5000

52

XCSE

Genmab A/S

13/06/2024

4:20:40 PM

1,829.5000

52

XCSE

Genmab A/S

13/06/2024

4:20:40 PM

1,829.5000

51

XCSE

Genmab A/S

13/06/2024

4:20:42 PM

1,829.0000

42

XCSE

Genmab A/S

13/06/2024

4:20:42 PM

1,829.0000

42

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

41

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

1

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

42

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

42

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

1

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

41

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

42

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

42

XCSE

Genmab A/S

13/06/2024

4:20:43 PM

1,829.0000

42

XCSE

80


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:23:57 PM

1,829.0000

9

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

200

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

24

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

24

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

24

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

24

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

24

XCSE

Genmab A/S

13/06/2024

4:24:36 PM

1,829.5000

4

XCSE

Genmab A/S

13/06/2024

4:26:08 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:08 PM

1,831.0000

1

XCSE

Genmab A/S

13/06/2024

4:26:08 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:09 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:09 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:09 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:09 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:09 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:09 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:10 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:10 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:10 PM

1,831.0000

21

XCSE

Genmab A/S

13/06/2024

4:26:10 PM

1,831.0000

14

XCSE

Genmab A/S

13/06/2024

4:26:52 PM

1,830.5000

40

CEUX

Genmab A/S

13/06/2024

4:26:52 PM

1,830.5000

165

XCSE

Genmab A/S

13/06/2024

4:26:52 PM

1,830.5000

39

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

23

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

17

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

28

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

23

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

5

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

6

AQEU

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

40

XCSE

Genmab A/S

13/06/2024

4:29:16 PM

1,830.0000

23

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

3

AQEU

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

19

AQEU

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

20

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

51

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

3

AQEU

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

3

AQEU

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

3

AQEU

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

20

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

47

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

1

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

20

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

27

XCSE

Genmab A/S

13/06/2024

4:29:26 PM

1,830.0000

12

XCSE

Genmab A/S

13/06/2024

4:30:08 PM

1,829.5000

19

XCSE

81


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:31:24 PM

1,830.0000

187

XCSE

Genmab A/S

13/06/2024

4:31:49 PM

1,830.5000

306

XCSE

Genmab A/S

13/06/2024

4:32:17 PM

1,830.0000

18

XCSE

Genmab A/S

13/06/2024

4:32:17 PM

1,830.0000

84

XCSE

Genmab A/S

13/06/2024

4:32:17 PM

1,830.0000

102

XCSE

Genmab A/S

13/06/2024

4:32:18 PM

1,830.0000

6

XCSE

Genmab A/S

13/06/2024

4:33:56 PM

1,829.5000

35

XCSE

Genmab A/S

13/06/2024

4:33:56 PM

1,829.5000

35

XCSE

Genmab A/S

13/06/2024

4:34:17 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:28 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:28 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:28 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:28 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:28 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:28 PM

1,829.5000

25

XCSE

Genmab A/S

13/06/2024

4:34:31 PM

1,829.5000

3

AQEU

Genmab A/S

13/06/2024

4:34:31 PM

1,829.5000

3

AQEU

Genmab A/S

13/06/2024

4:34:31 PM

1,829.5000

3

AQEU

Genmab A/S

13/06/2024

4:34:31 PM

1,829.5000

3

AQEU

Genmab A/S

13/06/2024

4:34:31 PM

1,829.5000

22

XCSE

Genmab A/S

13/06/2024

4:34:31 PM

1,829.5000

22

XCSE

Genmab A/S

13/06/2024

4:36:20 PM

1,829.5000

34

XCSE

Genmab A/S

13/06/2024

4:36:25 PM

1,829.5000

20

XCSE

Genmab A/S

13/06/2024

4:36:25 PM

1,829.5000

29

XCSE

Genmab A/S

13/06/2024

4:36:25 PM

1,829.5000

20

XCSE

Genmab A/S

13/06/2024

4:36:46 PM

1,831.0000

9

CEUX

Genmab A/S

13/06/2024

4:38:05 PM

1,830.5000

25

XCSE

Genmab A/S

13/06/2024

4:38:44 PM

1,831.0000

51

XCSE

Genmab A/S

13/06/2024

4:38:44 PM

1,831.0000

12

XCSE

Genmab A/S

13/06/2024

4:38:47 PM

1,831.5000

18

XCSE

Genmab A/S

13/06/2024

4:38:47 PM

1,831.5000

3

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

39

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

4

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

149

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

56

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

23

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

43

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

81

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

61

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

63

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

23

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

43

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

19

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

25

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

23

XCSE

Genmab A/S

13/06/2024

4:39:19 PM

1,831.5000

43

XCSE

Genmab A/S

13/06/2024

4:39:20 PM

1,831.5000

43

XCSE

Genmab A/S

13/06/2024

4:39:20 PM

1,831.5000

30

XCSE

Genmab A/S

13/06/2024

4:40:56 PM

1,831.5000

79

XCSE

82


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:40:56 PM

1,831.5000

79

XCSE

Genmab A/S

13/06/2024

4:40:56 PM

1,831.5000

79

XCSE

Genmab A/S

13/06/2024

4:40:56 PM

1,831.5000

15

XCSE

Genmab A/S

13/06/2024

4:40:56 PM

1,831.5000

64

XCSE

Genmab A/S

13/06/2024

4:41:11 PM

1,831.5000

79

XCSE

Genmab A/S

13/06/2024

4:41:11 PM

1,831.5000

74

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

48

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

1

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

108

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

48

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

60

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

108

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

48

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

19

XCSE

Genmab A/S

13/06/2024

4:41:47 PM

1,830.0000

7

XCSE

Genmab A/S

13/06/2024

4:41:55 PM

1,827.5000

44

XCSE

Genmab A/S

13/06/2024

4:41:55 PM

1,827.5000

44

XCSE

Genmab A/S

13/06/2024

4:43:17 PM

1,827.0000

11

XCSE

Genmab A/S

13/06/2024

4:43:33 PM

1,827.0000

3

XCSE

Genmab A/S

13/06/2024

4:43:48 PM

1,827.0000

30

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

132

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

19

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

5

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

63

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

50

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

1

XCSE

Genmab A/S

13/06/2024

4:44:30 PM

1,828.0000

13

XCSE

Genmab A/S

13/06/2024

4:45:11 PM

1,829.0000

22

XCSE

Genmab A/S

13/06/2024

4:45:13 PM

1,829.0000

22

XCSE

Genmab A/S

13/06/2024

4:45:13 PM

1,829.0000

22

XCSE

Genmab A/S

13/06/2024

4:45:15 PM

1,829.0000

22

XCSE

Genmab A/S

13/06/2024

4:45:16 PM

1,829.0000

10

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

57

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

10

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

2

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

25

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

6

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

19

XCSE

Genmab A/S

13/06/2024

4:45:20 PM

1,829.0000

6

XCSE

Genmab A/S

13/06/2024

4:45:21 PM

1,829.0000

9

XCSE

Genmab A/S

13/06/2024

4:45:21 PM

1,829.0000

16

XCSE

Genmab A/S

13/06/2024

4:46:28 PM

1,828.5000

277

XCSE

Genmab A/S

13/06/2024

4:46:28 PM

1,828.5000

345

XCSE

Genmab A/S

13/06/2024

4:46:28 PM

1,828.5000

5

XCSE

Genmab A/S

13/06/2024

4:46:28 PM

1,828.5000

35

XCSE

Genmab A/S

13/06/2024

4:46:28 PM

1,829.0000

78

XCSE

Genmab A/S

13/06/2024

4:46:29 PM

1,828.5000

41

XCSE

Genmab A/S

13/06/2024

4:46:29 PM

1,828.5000

233

XCSE

Genmab A/S

13/06/2024

4:46:29 PM

1,828.5000

3

XCSE

83


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:46:29 PM

1,828.5000

73

XCSE

Genmab A/S

13/06/2024

4:46:29 PM

1,828.5000

2

XCSE

Genmab A/S

13/06/2024

4:48:16 PM

1,829.0000

28

XCSE

Genmab A/S

13/06/2024

4:48:16 PM

1,829.0000

163

XCSE

Genmab A/S

13/06/2024

4:48:16 PM

1,829.0000

67

XCSE

Genmab A/S

13/06/2024

4:48:17 PM

1,829.0000

69

XCSE

Genmab A/S

13/06/2024

4:49:26 PM

1,829.0000

12

AQEU

Genmab A/S

13/06/2024

4:49:35 PM

1,829.0000

25

AQEU

Genmab A/S

13/06/2024

4:49:40 PM

1,829.0000

19

AQEU

Genmab A/S

13/06/2024

4:49:41 PM

1,829.0000

22

AQEU

Genmab A/S

13/06/2024

4:49:42 PM

1,829.0000

40

AQEU

Genmab A/S

13/06/2024

4:50:24 PM

1,830.5000

11

XCSE

Genmab A/S

13/06/2024

4:50:35 PM

1,830.5000

50

XCSE

Genmab A/S

13/06/2024

4:50:35 PM

1,830.5000

50

XCSE

Genmab A/S

13/06/2024

4:50:35 PM

1,830.5000

94

XCSE

Genmab A/S

13/06/2024

4:50:35 PM

1,830.5000

7

XCSE

Genmab A/S

13/06/2024

4:50:35 PM

1,830.5000

13

XCSE

Genmab A/S

13/06/2024

4:50:35 PM

1,830.5000

24

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

170

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

20

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

213

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

40

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

68

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

37

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

20

XCSE

Genmab A/S

13/06/2024

4:50:41 PM

1,830.5000

39

XCSE

Genmab A/S

13/06/2024

4:52:31 PM

1,831.0000

4

XCSE

Genmab A/S

13/06/2024

4:52:31 PM

1,831.0000

25

XCSE

Genmab A/S

13/06/2024

4:52:34 PM

1,831.0000

11

XCSE

Genmab A/S

13/06/2024

4:52:39 PM

1,831.0000

13

XCSE

Genmab A/S

13/06/2024

4:52:44 PM

1,831.0000

11

XCSE

Genmab A/S

13/06/2024

4:52:55 PM

1,830.5000

8

XCSE

Genmab A/S

13/06/2024

4:52:55 PM

1,830.5000

50

XCSE

Genmab A/S

13/06/2024

4:52:55 PM

1,830.5000

50

XCSE

Genmab A/S

13/06/2024

4:52:55 PM

1,830.5000

41

XCSE

Genmab A/S

13/06/2024

4:52:55 PM

1,830.5000

9

XCSE

Genmab A/S

13/06/2024

4:52:55 PM

1,830.5000

83

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

28

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

149

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

28

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

24

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

18

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

128

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

21

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

21

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

128

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

28

XCSE

Genmab A/S

13/06/2024

4:53:09 PM

1,830.5000

67

XCSE

Genmab A/S

13/06/2024

4:53:11 PM

1,829.5000

24

XCSE

84


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

13/06/2024

4:54:20 PM

1,829.0000

29

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

21

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

21

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

85

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

21

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

18

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

15

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

3

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

18

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

3

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

7

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

6

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

7

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

6

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

18

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

1

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

2

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

18

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

26

CEUX

Genmab A/S

14/06/2024

9:01:25 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

22

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

18

CEUX

85


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

13

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

12

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

3

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

14

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

5

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

3

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

19

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,824.0000

30

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

18

CEUX

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

44

XCSE

Genmab A/S

14/06/2024

9:01:26 AM

1,823.5000

44

XCSE

Genmab A/S

14/06/2024

9:01:27 AM

1,823.5000

13

XCSE

Genmab A/S

14/06/2024

9:01:44 AM

1,822.5000

12

CEUX

Genmab A/S

14/06/2024

9:04:28 AM

1,820.0000

4

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

86


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

14

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

24

XCSE

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,822.5000

2

TQEX

Genmab A/S

14/06/2024

9:05:02 AM

1,821.0000

2

AQEU

Genmab A/S

14/06/2024

9:05:02 AM

1,821.0000

20

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

AQEU

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

AQEU

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

5

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

AQEU

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

5

TQEX

87


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

10

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

7

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

2

CEUX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

4

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

1

TQEX

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

26

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

26

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

26

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

26

XCSE

Genmab A/S

14/06/2024

9:05:55 AM

1,822.5000

22

XCSE

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

9

XCSE

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

9

CEUX

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

9

CEUX

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

9

CEUX

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

9

CEUX

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

2

AQEU

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

2

AQEU

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

2

AQEU

Genmab A/S

14/06/2024

9:06:43 AM

1,825.5000

9

XCSE

Genmab A/S

14/06/2024

9:07:27 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:07:27 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:07:27 AM

1,824.5000

16

XCSE

Genmab A/S

14/06/2024

9:07:27 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:07:27 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:07:27 AM

1,824.5000

2

XCSE

Genmab A/S

14/06/2024

9:07:28 AM

1,824.5000

2

XCSE

Genmab A/S

14/06/2024

9:07:28 AM

1,824.5000

2

XCSE

Genmab A/S

14/06/2024

9:07:28 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:08:04 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:04 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

41

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

37

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

88


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

3

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

2

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

3

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

9

CEUX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

1

AQEU

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

2

TQEX

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

89

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

3

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

8

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

23

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

23

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

23

XCSE

Genmab A/S

14/06/2024

9:08:18 AM

1,824.0000

13

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

28

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

23

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

4

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

28

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

23

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

28

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

23

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

21

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

51

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

10

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

23

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

23

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

5

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

18

XCSE

89


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

23

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:10:02 AM

1,824.5000

2

AQEU

Genmab A/S

14/06/2024

9:10:02 AM

1,824.5000

11

CEUX

Genmab A/S

14/06/2024

9:10:02 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:10:02 AM

1,824.5000

20

XCSE

Genmab A/S

14/06/2024

9:10:02 AM

1,824.5000

20

CEUX

Genmab A/S

14/06/2024

9:10:59 AM

1,825.5000

9

XCSE

Genmab A/S

14/06/2024

9:10:59 AM

1,825.5000

10

CEUX

Genmab A/S

14/06/2024

9:10:59 AM

1,825.5000

5

TQEX

Genmab A/S

14/06/2024

9:12:15 AM

1,826.0000

38

AQEU

Genmab A/S

14/06/2024

9:12:26 AM

1,826.5000

35

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,826.5000

5

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

6

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

3

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

3

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

6

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

3

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

2

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

3

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

5

TQEX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

90


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

9

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

4

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

8

CEUX

Genmab A/S

14/06/2024

9:12:26 AM

1,824.0000

25

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,824.0000

23

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,824.5000

16

XCSE

Genmab A/S

14/06/2024

9:12:26 AM

1,825.0000

28

XCSE

Genmab A/S

14/06/2024

9:12:29 AM

1,824.0000

29

XCSE

Genmab A/S

14/06/2024

9:12:29 AM

1,824.0000

19

XCSE

Genmab A/S

14/06/2024

9:12:29 AM

1,824.0000

54

XCSE

Genmab A/S

14/06/2024

9:15:24 AM

1,825.5000

40

CEUX

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

35

CEUX

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

5

AQEU

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

6

TQEX

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

11

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

28

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

27

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

12

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

16

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

39

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

35

CEUX

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

19

XCSE

Genmab A/S

14/06/2024

9:15:32 AM

1,824.5000

17

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

15

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

9

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

6

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

9

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

6

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

9

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

6

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

15

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

23

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

36

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

15

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

20

XCSE

91


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

17

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

23

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

29

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

52

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

11

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

15

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

CEUX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

2

AQEU

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

5

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

12

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,826.0000

3

TQEX

Genmab A/S

14/06/2024

9:16:42 AM

1,825.0000

51

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,825.0000

41

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,825.0000

47

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,825.0000

51

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,825.5000

21

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,825.0000

5

XCSE

Genmab A/S

14/06/2024

9:16:42 AM

1,825.0000

47

XCSE

Genmab A/S

14/06/2024

9:19:11 AM

1,824.5000

60

CEUX

Genmab A/S

14/06/2024

9:19:11 AM

1,824.5000

5

AQEU

Genmab A/S

14/06/2024

9:19:11 AM

1,824.5000

58

TQEX

Genmab A/S

14/06/2024

9:19:11 AM

1,824.5000

9

TQEX

Genmab A/S

14/06/2024

9:19:11 AM

1,824.5000

67

XCSE

Genmab A/S

14/06/2024

9:19:11 AM

1,824.5000

4

CEUX

Genmab A/S

14/06/2024

9:20:01 AM

1,823.5000

62

XCSE

Genmab A/S

14/06/2024

9:20:01 AM

1,823.5000

57

XCSE

Genmab A/S

14/06/2024

9:20:01 AM

1,823.5000

5

XCSE

Genmab A/S

14/06/2024

9:20:01 AM

1,823.5000

14

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

3

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

6

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

7

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

7

CEUX

92


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

2

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

7

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

1

AQEU

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

2

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

7

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

2

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

7

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

1

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

1

CEUX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:22:07 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:23:22 AM

1,824.5000

8

XCSE

Genmab A/S

14/06/2024

9:23:22 AM

1,824.5000

16

XCSE

Genmab A/S

14/06/2024

9:23:22 AM

1,824.5000

5

XCSE

Genmab A/S

14/06/2024

9:24:07 AM

1,825.5000

36

XCSE

Genmab A/S

14/06/2024

9:24:20 AM

1,825.5000

37

XCSE

Genmab A/S

14/06/2024

9:24:28 AM

1,824.5000

24

XCSE

Genmab A/S

14/06/2024

9:24:28 AM

1,824.5000

23

CEUX

Genmab A/S

14/06/2024

9:24:28 AM

1,824.5000

3

CEUX

Genmab A/S

14/06/2024

9:24:28 AM

1,824.5000

12

CEUX

Genmab A/S

14/06/2024

9:24:28 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:28 AM

1,824.5000

11

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

23

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

23

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

23

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

9

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

3

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

3

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

24

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

7

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

7

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

17

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

17

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

7

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

9

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

21

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

21

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

2

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

18

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

32

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

12

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

18

XCSE

93


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

44

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

18

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

44

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

3

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

39

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

20

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

3

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

36

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.5000

21

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

48

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

17

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

16

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

1

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

17

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

2

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

2

AQEU

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

2

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

5

TQEX

Genmab A/S

14/06/2024

9:24:34 AM

1,824.0000

7

CEUX

Genmab A/S

14/06/2024

9:24:34 AM

1,823.0000

42

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

34

XCSE

Genmab A/S

14/06/2024

9:24:34 AM

1,823.5000

28

XCSE

Genmab A/S

14/06/2024

9:24:40 AM

1,821.5000

44

XCSE

Genmab A/S

14/06/2024

9:24:40 AM

1,821.5000

3

XCSE

Genmab A/S

14/06/2024

9:24:40 AM

1,821.5000

47

XCSE

Genmab A/S

14/06/2024

9:24:40 AM

1,821.5000

26

XCSE

Genmab A/S

14/06/2024

9:28:50 AM

1,820.0000

39

XCSE

Genmab A/S

14/06/2024

9:28:50 AM

1,820.0000

6

XCSE

Genmab A/S

14/06/2024

9:29:24 AM

1,822.0000

3

XCSE

Genmab A/S

14/06/2024

9:29:24 AM

1,822.0000

4

XCSE

Genmab A/S

14/06/2024

9:29:24 AM

1,822.0000

7

CEUX

Genmab A/S

14/06/2024

9:29:24 AM

1,822.0000

5

TQEX

Genmab A/S

14/06/2024

9:29:24 AM

1,822.0000

3

CEUX

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

47

XCSE

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

9

XCSE

94


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

9

XCSE

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

38

XCSE

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

33

XCSE

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

7

AQEU

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

7

AQEU

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

7

AQEU

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

7

AQEU

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

7

AQEU

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

7

AQEU

Genmab A/S

14/06/2024

9:29:46 AM

1,822.5000

1

XCSE

Genmab A/S

14/06/2024

9:30:26 AM

1,821.0000

80

XCSE

Genmab A/S

14/06/2024

9:30:26 AM

1,821.0000

12

TQEX

Genmab A/S

14/06/2024

9:30:26 AM

1,821.0000

71

CEUX

Genmab A/S

14/06/2024

9:30:27 AM

1,820.0000

2

CEUX

Genmab A/S

14/06/2024

9:30:27 AM

1,820.0000

2

AQEU

Genmab A/S

14/06/2024

9:30:27 AM

1,821.0000

10

CEUX

Genmab A/S

14/06/2024

9:32:10 AM

1,819.5000

30

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,820.5000

17

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

41

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

6

AQEU

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

7

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

22

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

33

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

18

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

6

AQEU

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

9

AQEU

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

7

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

9

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

13

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

22

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

18

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

62

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

22

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

20

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

10

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

12

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

10

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

10

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

17

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

2

AQEU

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

22

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

17

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

17

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

11

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

14

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

2

AQEU

95


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

1

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.5000

1

XCSE

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

36

CEUX

Genmab A/S

14/06/2024

9:33:23 AM

1,819.0000

6

TQEX

Genmab A/S

14/06/2024

9:33:25 AM

1,819.0000

36

TQEX

Genmab A/S

14/06/2024

9:33:25 AM

1,819.0000

15

TQEX

Genmab A/S

14/06/2024

9:33:25 AM

1,819.0000

4

TQEX

Genmab A/S

14/06/2024

9:36:43 AM

1,822.0000

35

CEUX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

35

XCSE

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

38

XCSE

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

5

XCSE

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

68

XCSE

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

73

XCSE

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

9

XCSE

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

TQEX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

TQEX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

19

TQEX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

TQEX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

9

TQEX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

38

CEUX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

38

CEUX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

3

CEUX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

35

CEUX

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

6

AQEU

Genmab A/S

14/06/2024

9:37:10 AM

1,822.0000

1

AQEU

Genmab A/S

14/06/2024

9:37:11 AM

1,820.0000

19

CEUX

Genmab A/S

14/06/2024

9:37:11 AM

1,820.0000

2

AQEU

Genmab A/S

14/06/2024

9:37:11 AM

1,820.0000

5

TQEX

Genmab A/S

14/06/2024

9:37:11 AM

1,820.0000

52

TQEX

Genmab A/S

14/06/2024

9:38:25 AM

1,822.0000

15

XCSE

Genmab A/S

14/06/2024

9:38:25 AM

1,822.0000

50

XCSE

Genmab A/S

14/06/2024

9:38:25 AM

1,822.0000

63

XCSE

Genmab A/S

14/06/2024

9:38:25 AM

1,822.0000

18

TQEX

Genmab A/S

14/06/2024

9:38:25 AM

1,822.0000

16

AQEU

Genmab A/S

14/06/2024

9:39:13 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

44

CEUX

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

3

CEUX

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

7

TQEX

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

44

XCSE

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

8

XCSE

96


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

43

XCSE

Genmab A/S

14/06/2024

9:39:42 AM

1,821.0000

14

CEUX

Genmab A/S

14/06/2024

9:40:05 AM

1,820.5000

25

CEUX

Genmab A/S

14/06/2024

9:40:59 AM

1,821.0000

22

CEUX

Genmab A/S

14/06/2024

9:40:59 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

6

AQEU

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

9

AQEU

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

31

XCSE

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

14

XCSE

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

34

CEUX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

41

CEUX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

34

CEUX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

34

CEUX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

7

CEUX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

1

AQEU

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:50 AM

1,823.5000

41

CEUX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

9

XCSE

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

6

XCSE

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

30

XCSE

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

40

CEUX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

5

AQEU

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

6

AQEU

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

6

TQEX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

45

XCSE

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

45

XCSE

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

9

AQEU

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

1

AQEU

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

8

TQEX

Genmab A/S

14/06/2024

9:42:51 AM

1,823.5000

1

AQEU

Genmab A/S

14/06/2024

9:43:41 AM

1,821.5000

18

CEUX

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

21

CEUX

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

1

CEUX

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

3

AQEU

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

13

AQEU

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

5

TQEX

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

40

TQEX

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

23

XCSE

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

36

XCSE

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

52

CEUX

Genmab A/S

14/06/2024

9:43:51 AM

1,820.0000

10

CEUX

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

19

CEUX

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

5

TQEX

97


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

12

XCSE

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

19

CEUX

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

8

XCSE

Genmab A/S

14/06/2024

9:43:52 AM

1,819.5000

67

XCSE

Genmab A/S

14/06/2024

9:43:53 AM

1,819.5000

16

CEUX

Genmab A/S

14/06/2024

9:43:54 AM

1,819.5000

18

XCSE

Genmab A/S

14/06/2024

9:44:14 AM

1,819.0000

9

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

20

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

21

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

20

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

21

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

12

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

6

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

12

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

6

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

6

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

21

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

21

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

36

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

30

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

48

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

17

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

49

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,819.0000

23

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

19

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

19

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

14

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

16

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

4

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

2

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

6

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

12

TQEX

98


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

11

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

7

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

18

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

18

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

21

XCSE

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

36

CEUX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

8

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

8

AQEU

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

8

TQEX

Genmab A/S

14/06/2024

9:45:45 AM

1,818.5000

8

AQEU

Genmab A/S

14/06/2024

9:45:46 AM

1,818.5000

33

XCSE

Genmab A/S

14/06/2024

9:45:46 AM

1,818.5000

2

XCSE

Genmab A/S

14/06/2024

9:45:46 AM

1,818.5000

3

XCSE

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

8

CEUX

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

8

CEUX

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

5

TQEX

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

5

TQEX

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

8

XCSE

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

2

XCSE

Genmab A/S

14/06/2024

9:52:13 AM

1,818.0000

8

XCSE

Genmab A/S

14/06/2024

9:53:40 AM

1,820.0000

18

XCSE

Genmab A/S

14/06/2024

9:53:50 AM

1,820.0000

24

XCSE

Genmab A/S

14/06/2024

9:53:50 AM

1,820.0000

2

XCSE

Genmab A/S

14/06/2024

9:53:50 AM

1,820.0000

2

XCSE

Genmab A/S

14/06/2024

9:53:50 AM

1,820.0000

24

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

50

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

26

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

18

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

29

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

18

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

2

CEUX

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

99


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

5

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

3

AQEU

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

32

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

22

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

37

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

32

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

22

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

7

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

54

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

32

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

22

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

32

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

22

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

32

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

9:54:52 AM

1,821.5000

10

XCSE

Genmab A/S

14/06/2024

9:58:23 AM

1,820.0000

120

CEUX

Genmab A/S

14/06/2024

9:58:28 AM

1,820.0000

7

AQEU

Genmab A/S

14/06/2024

9:58:28 AM

1,820.0000

18

TQEX

Genmab A/S

14/06/2024

9:58:28 AM

1,820.0000

133

XCSE

Genmab A/S

14/06/2024

9:58:28 AM

1,820.0000

10

CEUX

Genmab A/S

14/06/2024

9:59:47 AM

1,819.0000

54

CEUX

Genmab A/S

14/06/2024

9:59:47 AM

1,819.0000

8

AQEU

Genmab A/S

14/06/2024

9:59:47 AM

1,819.0000

9

TQEX

Genmab A/S

14/06/2024

9:59:47 AM

1,819.0000

61

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

21

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

21

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

20

CEUX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

20

CEUX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

19

CEUX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

4

TQEX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

1

TQEX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

7

TQEX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

21

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,818.5000

3

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,818.5000

17

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,818.5000

20

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,818.5000

17

XCSE

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

36

CEUX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

4

CEUX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

10

CEUX

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

10

TQEX

100


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:01:00 AM

1,819.5000

1

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

9

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

21

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

21

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

9

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

42

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

10

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

10

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

10

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

10

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

8

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

2

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

3

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

17

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

13

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

7

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,818.0000

1

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

21

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

3

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

17

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

20

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

7

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

9

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

24

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

7

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

2

AQEU

101


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

21

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

48

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

25

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.5000

5

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

21

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

8

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

36

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

10

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

11

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

48

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

36

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

1

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

2

CEUX

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

1

AQEU

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

6

XCSE

Genmab A/S

14/06/2024

10:01:49 AM

1,817.0000

40

CEUX

Genmab A/S

14/06/2024

10:09:15 AM

1,818.0000

8

TQEX

Genmab A/S

14/06/2024

10:09:15 AM

1,818.0000

26

TQEX

Genmab A/S

14/06/2024

10:09:25 AM

1,818.0000

15

CEUX

Genmab A/S

14/06/2024

10:09:25 AM

1,818.0000

13

TQEX

Genmab A/S

14/06/2024

10:09:25 AM

1,818.0000

8

XCSE

Genmab A/S

14/06/2024

10:09:43 AM

1,818.0000

20

AQEU

Genmab A/S

14/06/2024

10:09:43 AM

1,818.0000

20

XCSE

Genmab A/S

14/06/2024

10:10:00 AM

1,818.0000

6

TQEX

Genmab A/S

14/06/2024

10:10:05 AM

1,818.5000

39

CEUX

Genmab A/S

14/06/2024

10:10:13 AM

1,818.0000

46

XCSE

Genmab A/S

14/06/2024

10:11:47 AM

1,819.5000

36

CEUX

Genmab A/S

14/06/2024

10:11:47 AM

1,819.5000

2

CEUX

Genmab A/S

14/06/2024

10:12:20 AM

1,818.5000

1

XCSE

Genmab A/S

14/06/2024

10:12:20 AM

1,818.5000

69

XCSE

Genmab A/S

14/06/2024

10:12:52 AM

1,821.5000

15

CEUX

Genmab A/S

14/06/2024

10:12:52 AM

1,821.5000

7

XCSE

Genmab A/S

14/06/2024

10:12:52 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:12:58 AM

1,822.0000

22

XCSE

Genmab A/S

14/06/2024

10:12:58 AM

1,822.0000

50

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

17

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

3

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

16

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

10

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

16

CEUX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

2

AQEU

102


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

2

AQEU

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

2

AQEU

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

5

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

6

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

5

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

12

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

5

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

8

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

5

TQEX

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

6

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

14

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

6

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

20

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

12

XCSE

Genmab A/S

14/06/2024

10:13:08 AM

1,821.5000

37

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

4

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

1

AQEU

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

3

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

1

AQEU

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

6

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

1

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

6

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

103


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

1

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

1

AQEU

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

21

AQEU

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

1

AQEU

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

3

TQEX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

7

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

36

CEUX

Genmab A/S

14/06/2024

10:15:06 AM

1,821.0000

5

AQEU

Genmab A/S

14/06/2024

10:15:06 AM

1,819.5000

22

XCSE

Genmab A/S

14/06/2024

10:15:06 AM

1,819.5000

20

XCSE

Genmab A/S

14/06/2024

10:18:04 AM

1,823.5000

13

XCSE

Genmab A/S

14/06/2024

10:18:04 AM

1,823.5000

12

CEUX

Genmab A/S

14/06/2024

10:18:04 AM

1,823.5000

12

CEUX

Genmab A/S

14/06/2024

10:18:04 AM

1,823.5000

12

CEUX

Genmab A/S

14/06/2024

10:18:04 AM

1,823.5000

13

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,823.0000

76

CEUX

Genmab A/S

14/06/2024

10:19:08 AM

1,823.0000

11

AQEU

Genmab A/S

14/06/2024

10:19:08 AM

1,823.0000

12

TQEX

Genmab A/S

14/06/2024

10:19:08 AM

1,823.0000

84

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

21

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

21

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

2

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

17

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

20

CEUX

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

5

TQEX

104


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

2

XCSE

Genmab A/S

14/06/2024

10:19:08 AM

1,822.5000

21

XCSE

Genmab A/S

14/06/2024

10:21:07 AM

1,821.0000

18

CEUX

Genmab A/S

14/06/2024

10:21:07 AM

1,821.0000

2

TQEX

Genmab A/S

14/06/2024

10:21:07 AM

1,821.0000

3

TQEX

Genmab A/S

14/06/2024

10:21:07 AM

1,821.0000

18

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

18

CEUX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

3

CEUX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

18

CEUX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

1

CEUX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

2

AQEU

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

18

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

5

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

18

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

18

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

3

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

16

CEUX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

5

TQEX

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

37

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

25

XCSE

Genmab A/S

14/06/2024

10:21:46 AM

1,821.0000

11

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

10

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

38

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

38

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

43

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

43

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

1

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

6

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

6

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

3

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

6

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

6

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

1

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

4

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

17

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

4

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

6

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

7

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

17

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

16

XCSE

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

16

XCSE

105


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

17

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

8

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

1

AQEU

Genmab A/S

14/06/2024

10:22:49 AM

1,821.5000

6

TQEX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

17

CEUX

Genmab A/S

14/06/2024

10:22:49 AM

1,821.0000

16

XCSE

Genmab A/S

14/06/2024

10:24:17 AM

1,818.5000

21

XCSE

Genmab A/S

14/06/2024

10:26:21 AM

1,818.0000

40

CEUX

Genmab A/S

14/06/2024

10:26:21 AM

1,818.0000

6

AQEU

Genmab A/S

14/06/2024

10:26:21 AM

1,818.0000

6

TQEX

Genmab A/S

14/06/2024

10:26:21 AM

1,818.0000

44

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.5000

23

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.5000

55

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.5000

70

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.5000

10

AQEU

Genmab A/S

14/06/2024

10:26:46 AM

1,817.5000

11

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

18

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

18

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

2

AQEU

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

2

AQEU

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

13

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

35

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

18

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

18

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

13

XCSE

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

9

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

4

CEUX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

9

AQEU

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

8

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

1

TQEX

Genmab A/S

14/06/2024

10:26:46 AM

1,817.0000

35

XCSE

Genmab A/S

14/06/2024

10:26:48 AM

1,817.0000

8

CEUX

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

29

XCSE

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

27

CEUX

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

26

CEUX

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

28

XCSE

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

65

XCSE

Genmab A/S

14/06/2024

10:30:14 AM

1,817.0000

15

XCSE

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

19

CEUX

106


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

2

AQEU

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

3

AQEU

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

8

CEUX

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

106

XCSE

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

50

CEUX

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

9

AQEU

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

19

CEUX

Genmab A/S

14/06/2024

10:31:46 AM

1,817.0000

14

TQEX

Genmab A/S

14/06/2024

10:32:30 AM

1,816.5000

3

XCSE

Genmab A/S

14/06/2024

10:32:30 AM

1,816.5000

11

XCSE

Genmab A/S

14/06/2024

10:32:30 AM

1,816.5000

13

CEUX

Genmab A/S

14/06/2024

10:32:30 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

10:33:17 AM

1,817.0000

15

XCSE

Genmab A/S

14/06/2024

10:33:17 AM

1,817.0000

96

CEUX

Genmab A/S

14/06/2024

10:33:17 AM

1,817.0000

2

CEUX

Genmab A/S

14/06/2024

10:33:17 AM

1,817.0000

94

XCSE

Genmab A/S

14/06/2024

10:36:08 AM

1,817.5000

15

CEUX

Genmab A/S

14/06/2024

10:36:08 AM

1,817.5000

16

CEUX

Genmab A/S

14/06/2024

10:36:08 AM

1,817.5000

3

XCSE

Genmab A/S

14/06/2024

10:36:13 AM

1,816.5000

1

XCSE

Genmab A/S

14/06/2024

10:36:24 AM

1,816.5000

10

XCSE

Genmab A/S

14/06/2024

10:36:28 AM

1,817.5000

38

CEUX

Genmab A/S

14/06/2024

10:36:47 AM

1,817.5000

11

CEUX

Genmab A/S

14/06/2024

10:36:47 AM

1,817.5000

6

TQEX

Genmab A/S

14/06/2024

10:36:47 AM

1,817.5000

22

XCSE

Genmab A/S

14/06/2024

10:37:06 AM

1,817.5000

30

XCSE

Genmab A/S

14/06/2024

10:37:06 AM

1,817.5000

8

XCSE

Genmab A/S

14/06/2024

10:37:23 AM

1,817.5000

39

CEUX

Genmab A/S

14/06/2024

10:37:43 AM

1,817.5000

3

CEUX

Genmab A/S

14/06/2024

10:37:43 AM

1,817.5000

11

CEUX

Genmab A/S

14/06/2024

10:37:52 AM

1,817.5000

8

XCSE

Genmab A/S

14/06/2024

10:37:52 AM

1,817.5000

25

XCSE

Genmab A/S

14/06/2024

10:38:35 AM

1,818.5000

23

CEUX

Genmab A/S

14/06/2024

10:38:35 AM

1,818.5000

43

CEUX

Genmab A/S

14/06/2024

10:38:41 AM

1,818.5000

38

CEUX

Genmab A/S

14/06/2024

10:38:57 AM

1,819.0000

7

XCSE

Genmab A/S

14/06/2024

10:38:57 AM

1,819.0000

14

XCSE

Genmab A/S

14/06/2024

10:38:57 AM

1,819.0000

1

XCSE

Genmab A/S

14/06/2024

10:38:57 AM

1,819.0000

17

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

34

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

11

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

11

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

12

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

11

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

1

XCSE

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

12

CEUX

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:40:11 AM

1,819.5000

12

CEUX

Genmab A/S

14/06/2024

10:41:00 AM

1,820.0000

15

CEUX

107


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:41:00 AM

1,820.0000

21

CEUX

Genmab A/S

14/06/2024

10:41:11 AM

1,820.0000

21

CEUX

Genmab A/S

14/06/2024

10:41:11 AM

1,820.0000

3

CEUX

Genmab A/S

14/06/2024

10:41:11 AM

1,820.0000

6

XCSE

Genmab A/S

14/06/2024

10:41:11 AM

1,820.0000

5

XCSE

Genmab A/S

14/06/2024

10:41:34 AM

1,820.0000

38

XCSE

Genmab A/S

14/06/2024

10:41:54 AM

1,820.0000

3

CEUX

Genmab A/S

14/06/2024

10:41:54 AM

1,820.0000

25

CEUX

Genmab A/S

14/06/2024

10:41:54 AM

1,820.0000

7

XCSE

Genmab A/S

14/06/2024

10:42:08 AM

1,820.0000

16

CEUX

Genmab A/S

14/06/2024

10:42:08 AM

1,820.0000

3

CEUX

Genmab A/S

14/06/2024

10:42:08 AM

1,820.0000

14

XCSE

Genmab A/S

14/06/2024

10:42:26 AM

1,820.0000

12

CEUX

Genmab A/S

14/06/2024

10:42:26 AM

1,820.0000

24

CEUX

Genmab A/S

14/06/2024

10:42:42 AM

1,820.0000

12

CEUX

Genmab A/S

14/06/2024

10:42:42 AM

1,820.0000

6

CEUX

Genmab A/S

14/06/2024

10:42:42 AM

1,820.0000

9

CEUX

Genmab A/S

14/06/2024

10:42:42 AM

1,820.0000

6

XCSE

Genmab A/S

14/06/2024

10:42:42 AM

1,820.0000

4

XCSE

Genmab A/S

14/06/2024

10:42:58 AM

1,820.0000

11

CEUX

Genmab A/S

14/06/2024

10:42:58 AM

1,820.0000

3

CEUX

Genmab A/S

14/06/2024

10:42:58 AM

1,820.0000

25

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

6

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

3

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

3

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

2

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

108


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

2

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

9

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

6

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,819.5000

1

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

22

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

22

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

22

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

22

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

12

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

10

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

10

XCSE

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

3

AQEU

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

11

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

109


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

20

CEUX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

3

AQEU

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

10:43:06 AM

1,818.5000

12

XCSE

Genmab A/S

14/06/2024

10:43:07 AM

1,818.5000

1

TQEX

Genmab A/S

14/06/2024

10:43:11 AM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

10:48:02 AM

1,817.5000

92

CEUX

Genmab A/S

14/06/2024

10:48:02 AM

1,817.5000

14

TQEX

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

20

CEUX

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

20

CEUX

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

2

AQEU

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

20

XCSE

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

50

XCSE

Genmab A/S

14/06/2024

10:48:10 AM

1,816.5000

20

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.5000

78

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

26

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

24

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

16

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

40

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

2

AQEU

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

3

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

14

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

2

AQEU

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

2

AQEU

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

2

AQEU

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

5

TQEX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

3

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

7

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

7

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

9

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

23

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

23

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

4

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

1

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

15

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

18

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

17

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

17

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

9

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

2

AQEU

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

5

TQEX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

24

TQEX

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

40

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,814.5000

2

AQEU

Genmab A/S

14/06/2024

10:48:38 AM

1,815.0000

6

CEUX

Genmab A/S

14/06/2024

10:48:38 AM

1,814.5000

5

TQEX

110


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

10:48:38 AM

1,814.5000

21

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,814.5000

17

XCSE

Genmab A/S

14/06/2024

10:48:38 AM

1,814.5000

4

XCSE

Genmab A/S

14/06/2024

10:48:39 AM

1,814.5000

21

CEUX

Genmab A/S

14/06/2024

10:48:41 AM

1,814.5000

21

CEUX

Genmab A/S

14/06/2024

10:52:52 AM

1,813.0000

19

XCSE

Genmab A/S

14/06/2024

10:52:52 AM

1,813.0000

18

XCSE

Genmab A/S

14/06/2024

10:55:40 AM

1,814.5000

9

CEUX

Genmab A/S

14/06/2024

10:55:40 AM

1,814.5000

22

CEUX

Genmab A/S

14/06/2024

10:55:40 AM

1,814.5000

5

TQEX

Genmab A/S

14/06/2024

10:55:40 AM

1,814.5000

35

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

58

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

3

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

4

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

9

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

6

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

15

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

5

TQEX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

63

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.0000

19

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.0000

19

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

18

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

6

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

20

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

12

CEUX

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

8

XCSE

Genmab A/S

14/06/2024

10:56:43 AM

1,815.5000

7

CEUX

Genmab A/S

14/06/2024

10:56:44 AM

1,815.0000

18

CEUX

Genmab A/S

14/06/2024

10:56:44 AM

1,815.0000

5

TQEX

111


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

77

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

25

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

25

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

18

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

25

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

70

CEUX

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

10

AQEU

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

11

TQEX

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

22

CEUX

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

22

CEUX

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

9

CEUX

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

4

AQEU

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

4

AQEU

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

25

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

48

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,814.0000

7

XCSE

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

22

CEUX

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

22

CEUX

Genmab A/S

14/06/2024

11:00:30 AM

1,813.5000

22

CEUX

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

38

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

13

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

25

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

10

CEUX

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

4

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

4

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

4

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

4

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

38

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

13

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

25

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

38

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

13

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

25

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

24

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

25

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

25

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

19

XCSE

Genmab A/S

14/06/2024

11:00:31 AM

1,813.0000

8

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

8

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

1

AQEU

Genmab A/S

14/06/2024

11:00:31 AM

1,813.5000

3

AQEU

Genmab A/S

14/06/2024

11:06:27 AM

1,815.5000

84

CEUX

Genmab A/S

14/06/2024

11:06:27 AM

1,815.5000

13

TQEX

Genmab A/S

14/06/2024

11:06:27 AM

1,815.5000

69

XCSE

Genmab A/S

14/06/2024

11:06:27 AM

1,815.5000

24

XCSE

Genmab A/S

14/06/2024

11:06:27 AM

1,815.5000

12

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

18

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

20

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

18

CEUX

112


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

10

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

7

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

7

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

17

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

38

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

18

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

20

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

42

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

34

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

18

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

19

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

1

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

9

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

9

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

8

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

17

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

17

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

17

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

2

AQEU

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

5

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

36

CEUX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

8

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

10

TQEX

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

35

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.5000

14

XCSE

Genmab A/S

14/06/2024

11:07:02 AM

1,814.0000

26

XCSE

Genmab A/S

14/06/2024

11:15:01 AM

1,817.5000

26

XCSE

Genmab A/S

14/06/2024

11:15:01 AM

1,817.5000

60

XCSE

Genmab A/S

14/06/2024

11:15:01 AM

1,817.5000

74

XCSE

Genmab A/S

14/06/2024

11:16:06 AM

1,819.5000

34

XCSE

Genmab A/S

14/06/2024

11:16:26 AM

1,819.5000

37

XCSE

Genmab A/S

14/06/2024

11:16:50 AM

1,819.5000

5

XCSE

Genmab A/S

14/06/2024

11:16:50 AM

1,819.5000

32

XCSE

Genmab A/S

14/06/2024

11:16:50 AM

1,819.5000

3

XCSE

113


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

11:17:10 AM

1,818.5000

11

XCSE

Genmab A/S

14/06/2024

11:17:10 AM

1,818.5000

5

TQEX

Genmab A/S

14/06/2024

11:17:10 AM

1,818.5000

89

CEUX

Genmab A/S

14/06/2024

11:17:10 AM

1,818.5000

26

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

9

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

9

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

9

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

9

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

9

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

4

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

5

TQEX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

2

CEUX

Genmab A/S

14/06/2024

11:17:27 AM

1,819.0000

8

XCSE

Genmab A/S

14/06/2024

11:17:55 AM

1,818.5000

132

XCSE

Genmab A/S

14/06/2024

11:17:55 AM

1,818.5000

6

XCSE

Genmab A/S

14/06/2024

11:17:55 AM

1,818.5000

18

AQEU

Genmab A/S

14/06/2024

11:17:55 AM

1,818.5000

19

TQEX

Genmab A/S

14/06/2024

11:17:55 AM

1,818.5000

51

CEUX

Genmab A/S

14/06/2024

11:17:55 AM

1,818.5000

3

AQEU

Genmab A/S

14/06/2024

11:19:49 AM

1,818.0000

10

AQEU

Genmab A/S

14/06/2024

11:20:41 AM

1,818.0000

106

XCSE

Genmab A/S

14/06/2024

11:20:41 AM

1,818.0000

84

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,818.0000

88

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,818.0000

13

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,818.0000

13

TQEX

Genmab A/S

14/06/2024

11:20:44 AM

1,818.0000

97

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

18

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

18

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

12

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

18

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

18

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

9

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

2

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

5

TQEX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

36

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

25

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

14

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

25

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

2

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.5000

28

XCSE

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

22

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

114


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

22

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

17

CEUX

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

4

AQEU

Genmab A/S

14/06/2024

11:20:44 AM

1,817.0000

12

CEUX

Genmab A/S

14/06/2024

11:27:28 AM

1,815.5000

70

XCSE

Genmab A/S

14/06/2024

11:27:28 AM

1,815.5000

71

XCSE

Genmab A/S

14/06/2024

11:27:28 AM

1,815.5000

2

XCSE

Genmab A/S

14/06/2024

11:27:28 AM

1,815.5000

10

TQEX

Genmab A/S

14/06/2024

11:27:28 AM

1,815.5000

10

TQEX

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

60

CEUX

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

18

CEUX

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

43

CEUX

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

9

TQEX

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

9

TQEX

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

67

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

67

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

21

CEUX

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

19

CEUX

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

3

AQEU

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

3

AQEU

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

22

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

20

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

22

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

18

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

2

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,816.5000

2

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

9

XCSE

Genmab A/S

14/06/2024

11:29:20 AM

1,817.0000

9

XCSE

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

21

CEUX

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

21

CEUX

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

7

CEUX

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

3

AQEU

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

3

AQEU

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

5

TQEX

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

20

XCSE

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

8

XCSE

Genmab A/S

14/06/2024

11:29:25 AM

1,816.5000

2

XCSE

Genmab A/S

14/06/2024

11:33:47 AM

1,814.5000

65

XCSE

Genmab A/S

14/06/2024

11:33:47 AM

1,814.5000

10

XCSE

Genmab A/S

14/06/2024

11:34:09 AM

1,814.0000

27

XCSE

Genmab A/S

14/06/2024

11:34:09 AM

1,814.0000

17

XCSE

115


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

11:34:09 AM

1,814.0000

17

XCSE

Genmab A/S

14/06/2024

11:34:09 AM

1,814.0000

27

XCSE

Genmab A/S

14/06/2024

11:34:09 AM

1,814.0000

44

XCSE

Genmab A/S

14/06/2024

11:34:09 AM

1,814.0000

12

XCSE

Genmab A/S

14/06/2024

11:36:08 AM

1,814.0000

22

CEUX

Genmab A/S

14/06/2024

11:37:25 AM

1,814.0000

19

XCSE

Genmab A/S

14/06/2024

11:37:25 AM

1,814.0000

13

XCSE

Genmab A/S

14/06/2024

11:37:25 AM

1,814.0000

18

XCSE

Genmab A/S

14/06/2024

11:37:25 AM

1,814.0000

37

XCSE

Genmab A/S

14/06/2024

11:37:25 AM

1,814.0000

7

TQEX

Genmab A/S

14/06/2024

11:38:08 AM

1,814.0000

109

XCSE

Genmab A/S

14/06/2024

11:38:08 AM

1,814.0000

33

XCSE

Genmab A/S

14/06/2024

11:38:20 AM

1,814.0000

69

XCSE

Genmab A/S

14/06/2024

11:39:03 AM

1,814.5000

26

XCSE

Genmab A/S

14/06/2024

11:39:03 AM

1,814.5000

51

XCSE

Genmab A/S

14/06/2024

11:39:47 AM

1,814.5000

10

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

41

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

8

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

13

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

9

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

37

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

13

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

21

CEUX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

9

AQEU

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

9

AQEU

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

8

TQEX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

1

TQEX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

22

TQEX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

9

TQEX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

9

AQEU

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

9

AQEU

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

8

AQEU

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

6

TQEX

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

65

XCSE

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

48

XCSE

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

17

XCSE

Genmab A/S

14/06/2024

11:40:44 AM

1,814.5000

38

XCSE

Genmab A/S

14/06/2024

11:44:00 AM

1,812.5000

2

AQEU

Genmab A/S

14/06/2024

11:45:32 AM

1,813.0000

1

AQEU

Genmab A/S

14/06/2024

11:45:32 AM

1,813.0000

29

XCSE

Genmab A/S

14/06/2024

11:45:32 AM

1,813.0000

3

XCSE

Genmab A/S

14/06/2024

11:45:35 AM

1,812.5000

69

XCSE

Genmab A/S

14/06/2024

11:45:35 AM

1,812.5000

62

CEUX

Genmab A/S

14/06/2024

11:45:35 AM

1,812.5000

10

TQEX

Genmab A/S

14/06/2024

11:45:35 AM

1,812.5000

7

TQEX

Genmab A/S

14/06/2024

11:46:43 AM

1,813.5000

12

XCSE

Genmab A/S

14/06/2024

11:46:43 AM

1,813.5000

11

CEUX

Genmab A/S

14/06/2024

11:46:43 AM

1,813.5000

12

XCSE

Genmab A/S

14/06/2024

11:46:43 AM

1,813.5000

17

XCSE

116


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

11:46:43 AM

1,813.5000

12

XCSE

Genmab A/S

14/06/2024

11:47:27 AM

1,813.0000

50

XCSE

Genmab A/S

14/06/2024

11:47:27 AM

1,813.0000

20

XCSE

Genmab A/S

14/06/2024

11:47:27 AM

1,813.0000

25

XCSE

Genmab A/S

14/06/2024

11:47:27 AM

1,813.0000

15

XCSE

Genmab A/S

14/06/2024

11:47:27 AM

1,813.0000

20

XCSE

Genmab A/S

14/06/2024

11:47:28 AM

1,813.0000

20

XCSE

Genmab A/S

14/06/2024

11:47:28 AM

1,813.0000

17

XCSE

Genmab A/S

14/06/2024

11:47:28 AM

1,813.0000

20

XCSE

Genmab A/S

14/06/2024

11:47:28 AM

1,813.0000

20

XCSE

Genmab A/S

14/06/2024

11:47:31 AM

1,813.0000

20

XCSE

Genmab A/S

14/06/2024

11:47:31 AM

1,813.0000

16

XCSE

Genmab A/S

14/06/2024

11:49:47 AM

1,814.5000

13

XCSE

Genmab A/S

14/06/2024

11:50:07 AM

1,814.5000

10

XCSE

Genmab A/S

14/06/2024

11:50:07 AM

1,814.5000

1

TQEX

Genmab A/S

14/06/2024

11:50:07 AM

1,814.5000

10

CEUX

Genmab A/S

14/06/2024

11:50:41 AM

1,814.5000

10

CEUX

Genmab A/S

14/06/2024

11:52:09 AM

1,816.5000

30

CEUX

Genmab A/S

14/06/2024

11:52:09 AM

1,816.5000

14

XCSE

Genmab A/S

14/06/2024

11:52:09 AM

1,816.5000

30

XCSE

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

50

XCSE

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

106

XCSE

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

67

CEUX

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

9

CEUX

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

140

CEUX

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

20

AQEU

Genmab A/S

14/06/2024

11:52:14 AM

1,816.0000

21

TQEX

Genmab A/S

14/06/2024

11:57:28 AM

1,815.5000

3

CEUX

Genmab A/S

14/06/2024

11:57:42 AM

1,815.5000

1

XCSE

Genmab A/S

14/06/2024

11:57:42 AM

1,815.5000

75

XCSE

Genmab A/S

14/06/2024

11:57:42 AM

1,815.5000

31

XCSE

Genmab A/S

14/06/2024

11:57:42 AM

1,815.5000

30

XCSE

Genmab A/S

14/06/2024

11:58:32 AM

1,817.5000

28

CEUX

Genmab A/S

14/06/2024

11:59:15 AM

1,818.0000

25

XCSE

Genmab A/S

14/06/2024

11:59:15 AM

1,818.0000

20

XCSE

Genmab A/S

14/06/2024

11:59:15 AM

1,818.0000

6

XCSE

Genmab A/S

14/06/2024

12:00:41 PM

1,820.0000

30

XCSE

Genmab A/S

14/06/2024

12:00:41 PM

1,820.0000

4

XCSE

Genmab A/S

14/06/2024

12:00:41 PM

1,820.0000

25

XCSE

Genmab A/S

14/06/2024

12:00:41 PM

1,820.0000

32

XCSE

Genmab A/S

14/06/2024

12:00:46 PM

1,820.0000

42

XCSE

Genmab A/S

14/06/2024

12:00:46 PM

1,820.0000

42

XCSE

Genmab A/S

14/06/2024

12:00:46 PM

1,820.0000

42

XCSE

Genmab A/S

14/06/2024

12:00:46 PM

1,820.0000

10

XCSE

Genmab A/S

14/06/2024

12:01:04 PM

1,820.0000

37

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

77

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

33

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

31

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

5

AQEU

117


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

11

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

5

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

27

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

5

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

2

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

86

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

37

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.5000

32

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

51

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

44

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

51

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

44

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

13

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

44

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,819.0000

44

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

3

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

19

XCSE

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

15

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

3

AQEU

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

36

CEUX

Genmab A/S

14/06/2024

12:01:13 PM

1,818.5000

3

XCSE

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

22

XCSE

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

20

CEUX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

20

CEUX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

4

CEUX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

3

AQEU

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

22

XCSE

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

20

CEUX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

4

CEUX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

5

TQEX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

15

TQEX

Genmab A/S

14/06/2024

12:09:02 PM

1,817.0000

1

TQEX

Genmab A/S

14/06/2024

12:12:30 PM

1,817.0000

16

CEUX

Genmab A/S

14/06/2024

12:12:30 PM

1,817.0000

10

CEUX

Genmab A/S

14/06/2024

12:12:30 PM

1,817.0000

8

TQEX

Genmab A/S

14/06/2024

12:12:49 PM

1,817.0000

38

CEUX

Genmab A/S

14/06/2024

12:12:49 PM

1,817.0000

1

AQEU

Genmab A/S

14/06/2024

12:13:17 PM

1,817.0000

17

CEUX

118


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

12:13:17 PM

1,817.0000

14

CEUX

Genmab A/S

14/06/2024

12:13:17 PM

1,817.0000

4

XCSE

Genmab A/S

14/06/2024

12:13:36 PM

1,817.5000

12

XCSE

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

10

XCSE

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

3

XCSE

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

38

XCSE

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

12

CEUX

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

12

CEUX

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

12

CEUX

Genmab A/S

14/06/2024

12:14:02 PM

1,817.5000

13

XCSE

Genmab A/S

14/06/2024

12:15:45 PM

1,818.5000

18

CEUX

Genmab A/S

14/06/2024

12:16:25 PM

1,821.5000

41

CEUX

Genmab A/S

14/06/2024

12:16:25 PM

1,821.5000

41

CEUX

Genmab A/S

14/06/2024

12:18:31 PM

1,824.5000

17

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

30

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

8

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

142

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

50

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

13

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

38

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

38

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

36

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

32

TQEX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

25

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

4

CEUX

Genmab A/S

14/06/2024

12:18:44 PM

1,824.5000

14

CEUX

Genmab A/S

14/06/2024

12:19:12 PM

1,824.5000

150

CEUX

Genmab A/S

14/06/2024

12:19:12 PM

1,824.5000

26

AQEU

Genmab A/S

14/06/2024

12:19:12 PM

1,824.5000

31

CEUX

Genmab A/S

14/06/2024

12:19:12 PM

1,824.5000

28

TQEX

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

9

XCSE

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

10

CEUX

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

10

CEUX

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

10

CEUX

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

1

CEUX

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

5

TQEX

Genmab A/S

14/06/2024

12:21:54 PM

1,827.0000

8

TQEX

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

21

XCSE

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

21

XCSE

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

21

XCSE

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

21

CEUX

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

21

CEUX

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

19

CEUX

Genmab A/S

14/06/2024

12:22:40 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:23:39 PM

1,828.0000

27

XCSE

Genmab A/S

14/06/2024

12:23:39 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:23:39 PM

1,828.0000

8

TQEX

Genmab A/S

14/06/2024

12:24:31 PM

1,828.0000

10

XCSE

Genmab A/S

14/06/2024

12:24:31 PM

1,828.0000

48

XCSE

119


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

12:24:31 PM

1,828.0000

6

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

10

XCSE

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

9

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

9

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

9

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

7

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

9

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

2

AQEU

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

10

XCSE

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

36

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

16

CEUX

Genmab A/S

14/06/2024

12:25:18 PM

1,828.0000

9

AQEU

Genmab A/S

14/06/2024

12:25:56 PM

1,826.5000

19

XCSE

Genmab A/S

14/06/2024

12:25:59 PM

1,826.5000

19

XCSE

Genmab A/S

14/06/2024

12:25:59 PM

1,826.5000

5

CEUX

Genmab A/S

14/06/2024

12:25:59 PM

1,826.5000

2

AQEU

Genmab A/S

14/06/2024

12:25:59 PM

1,826.5000

17

AQEU

Genmab A/S

14/06/2024

12:25:59 PM

1,826.5000

1

CEUX

Genmab A/S

14/06/2024

12:26:00 PM

1,826.5000

14

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,827.5000

45

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,828.0000

49

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,827.5000

45

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,827.5000

25

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,828.0000

44

CEUX

Genmab A/S

14/06/2024

12:27:31 PM

1,828.0000

7

AQEU

Genmab A/S

14/06/2024

12:27:31 PM

1,828.0000

6

TQEX

Genmab A/S

14/06/2024

12:27:31 PM

1,827.0000

42

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,827.0000

6

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,827.0000

39

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,827.0000

23

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,826.5000

5

CEUX

Genmab A/S

14/06/2024

12:27:31 PM

1,826.5000

16

CEUX

Genmab A/S

14/06/2024

12:27:31 PM

1,826.5000

4

AQEU

Genmab A/S

14/06/2024

12:27:31 PM

1,826.5000

12

XCSE

Genmab A/S

14/06/2024

12:27:31 PM

1,826.5000

12

XCSE

Genmab A/S

14/06/2024

12:27:33 PM

1,826.5000

21

CEUX

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

30

XCSE

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

5

XCSE

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

25

XCSE

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

30

XCSE

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

31

CEUX

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

31

CEUX

Genmab A/S

14/06/2024

12:31:03 PM

1,827.5000

25

CEUX

Genmab A/S

14/06/2024

12:33:00 PM

1,827.5000

7

XCSE

Genmab A/S

14/06/2024

12:33:00 PM

1,827.5000

5

TQEX

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

8

CEUX

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

7

CEUX

120


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

1

AQEU

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

5

TQEX

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

4

TQEX

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

7

XCSE

Genmab A/S

14/06/2024

12:33:13 PM

1,827.5000

8

XCSE

Genmab A/S

14/06/2024

12:35:09 PM

1,828.5000

14

XCSE

Genmab A/S

14/06/2024

12:35:09 PM

1,828.5000

6

XCSE

Genmab A/S

14/06/2024

12:35:09 PM

1,828.5000

15

XCSE

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

1

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

50

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

17

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

34

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

4

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

55

XCSE

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

36

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

6

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

13

CEUX

Genmab A/S

14/06/2024

12:35:14 PM

1,828.0000

7

CEUX

Genmab A/S

14/06/2024

12:36:27 PM

1,827.5000

25

XCSE

Genmab A/S

14/06/2024

12:36:27 PM

1,827.5000

117

XCSE

Genmab A/S

14/06/2024

12:37:33 PM

1,827.0000

3

XCSE

Genmab A/S

14/06/2024

12:37:33 PM

1,827.0000

40

XCSE

Genmab A/S

14/06/2024

12:37:33 PM

1,827.0000

10

XCSE

Genmab A/S

14/06/2024

12:40:16 PM

1,828.0000

26

CEUX

Genmab A/S

14/06/2024

12:40:16 PM

1,828.0000

9

XCSE

Genmab A/S

14/06/2024

12:40:37 PM

1,828.0000

7

XCSE

Genmab A/S

14/06/2024

12:40:41 PM

1,828.5000

8

AQEU

Genmab A/S

14/06/2024

12:40:41 PM

1,828.5000

1

AQEU

Genmab A/S

14/06/2024

12:40:41 PM

1,828.5000

9

AQEU

Genmab A/S

14/06/2024

12:40:56 PM

1,828.5000

1

AQEU

Genmab A/S

14/06/2024

12:41:02 PM

1,828.5000

2

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

100

XCSE

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

34

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

90

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

22

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

22

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

16

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

6

CEUX

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

6

AQEU

Genmab A/S

14/06/2024

12:42:12 PM

1,828.5000

7

AQEU

Genmab A/S

14/06/2024

12:42:15 PM

1,827.0000

24

XCSE

Genmab A/S

14/06/2024

12:45:02 PM

1,829.0000

9

XCSE

Genmab A/S

14/06/2024

12:45:02 PM

1,829.0000

29

XCSE

Genmab A/S

14/06/2024

12:45:29 PM

1,829.0000

7

CEUX

Genmab A/S

14/06/2024

12:45:29 PM

1,829.0000

29

CEUX

Genmab A/S

14/06/2024

12:45:43 PM

1,828.5000

67

XCSE

Genmab A/S

14/06/2024

12:45:43 PM

1,828.5000

60

CEUX

Genmab A/S

14/06/2024

12:45:43 PM

1,828.5000

9

AQEU

Genmab A/S

14/06/2024

12:45:43 PM

1,828.5000

9

TQEX

121


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

9

CEUX

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

8

CEUX

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

3

CEUX

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

17

CEUX

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

3

AQEU

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

17

XCSE

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

4

XCSE

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

4

XCSE

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

4

XCSE

Genmab A/S

14/06/2024

12:45:43 PM

1,828.0000

17

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

9

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

2

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

11

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

31

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

13

CEUX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

13

CEUX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

6

CEUX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

13

CEUX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

1

AQEU

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

2

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

2

CEUX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

1

AQEU

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

5

TQEX

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

30

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

30

XCSE

Genmab A/S

14/06/2024

12:47:53 PM

1,828.0000

6

XCSE

Genmab A/S

14/06/2024

12:50:46 PM

1,828.0000

9

AQEU

Genmab A/S

14/06/2024

12:51:48 PM

1,830.5000

36

CEUX

Genmab A/S

14/06/2024

12:51:48 PM

1,830.5000

16

CEUX

Genmab A/S

14/06/2024

12:53:37 PM

1,830.5000

27

XCSE

Genmab A/S

14/06/2024

12:53:37 PM

1,830.5000

7

XCSE

Genmab A/S

14/06/2024

12:53:37 PM

1,830.5000

5

TQEX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

68

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

7

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

128

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

62

CEUX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

7

CEUX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

39

CEUX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

23

CEUX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

9

AQEU

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

1

AQEU

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

5

TQEX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

5

TQEX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

8

TQEX

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

4

XCSE

122


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

64

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

7

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

68

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

7

XCSE

Genmab A/S

14/06/2024

12:54:01 PM

1,833.0000

25

XCSE

Genmab A/S

14/06/2024

12:57:00 PM

1,833.0000

11

XCSE

Genmab A/S

14/06/2024

12:57:00 PM

1,833.0000

52

XCSE

Genmab A/S

14/06/2024

12:57:00 PM

1,833.0000

11

CEUX

Genmab A/S

14/06/2024

12:57:00 PM

1,833.0000

11

CEUX

Genmab A/S

14/06/2024

12:57:00 PM

1,833.0000

6

CEUX

Genmab A/S

14/06/2024

12:57:12 PM

1,832.5000

21

XCSE

Genmab A/S

14/06/2024

12:57:12 PM

1,832.5000

21

XCSE

Genmab A/S

14/06/2024

1:00:01 PM

1,833.5000

1

XCSE

Genmab A/S

14/06/2024

1:00:14 PM

1,834.0000

11

CEUX

Genmab A/S

14/06/2024

1:01:08 PM

1,834.0000

9

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

19

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

8

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

17

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

3

AQEU

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

1

AQEU

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

5

TQEX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

69

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

20

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

20

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

20

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

23

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

20

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

20

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

4

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

3

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

3

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

16

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

4

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

2

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

8

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

19

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

8

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

13

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

10

CEUX

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

35

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

42

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

12

XCSE

123


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

35

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

20

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

21

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

21

XCSE

Genmab A/S

14/06/2024

1:02:31 PM

1,834.0000

17

CEUX

Genmab A/S

14/06/2024

1:05:20 PM

1,833.5000

22

XCSE

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

8

XCSE

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

10

XCSE

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

9

CEUX

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

10

CEUX

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

3

CEUX

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

5

TQEX

Genmab A/S

14/06/2024

1:06:52 PM

1,834.5000

25

TQEX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

19

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

21

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

17

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

4

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

5

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

5

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

2

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

38

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

17

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

5

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

19

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

2

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

7

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

2

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

7

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

7

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

124


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

XCSE

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

12

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

5

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

1

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

36

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

10

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

3

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

1

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

27

CEUX

Genmab A/S

14/06/2024

1:09:10 PM

1,836.0000

25

CEUX

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

11

XCSE

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

1

XCSE

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

5

XCSE

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

11

CEUX

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

1

CEUX

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

5

XCSE

Genmab A/S

14/06/2024

1:15:43 PM

1,833.0000

10

CEUX

Genmab A/S

14/06/2024

1:17:01 PM

1,833.0000

2

CEUX

Genmab A/S

14/06/2024

1:17:01 PM

1,833.0000

90

XCSE

Genmab A/S

14/06/2024

1:17:01 PM

1,833.0000

16

CEUX

Genmab A/S

14/06/2024

1:20:16 PM

1,834.5000

41

XCSE

Genmab A/S

14/06/2024

1:20:16 PM

1,834.5000

14

XCSE

Genmab A/S

14/06/2024

1:20:16 PM

1,834.5000

25

XCSE

Genmab A/S

14/06/2024

1:20:16 PM

1,834.5000

36

CEUX

Genmab A/S

14/06/2024

1:20:16 PM

1,834.5000

14

CEUX

Genmab A/S

14/06/2024

1:20:16 PM

1,834.5000

27

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

22

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

8

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

3

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

10

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

13

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

21

CEUX

125


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

10

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

9

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

19

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

2

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

10

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

9

CEUX

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

3

AQEU

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

2

AQEU

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

2

AQEU

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

9

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

11

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

10

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

11

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

11

XCSE

Genmab A/S

14/06/2024

1:21:58 PM

1,837.0000

10

XCSE

Genmab A/S

14/06/2024

1:22:03 PM

1,836.5000

2

AQEU

Genmab A/S

14/06/2024

1:22:30 PM

1,837.0000

25

XCSE

Genmab A/S

14/06/2024

1:22:49 PM

1,837.0000

30

XCSE

Genmab A/S

14/06/2024

1:22:50 PM

1,836.5000

8

XCSE

Genmab A/S

14/06/2024

1:22:50 PM

1,837.0000

10

XCSE

Genmab A/S

14/06/2024

1:24:03 PM

1,837.5000

39

XCSE

Genmab A/S

14/06/2024

1:24:03 PM

1,837.5000

4

XCSE

Genmab A/S

14/06/2024

1:24:03 PM

1,837.5000

4

XCSE

Genmab A/S

14/06/2024

1:24:03 PM

1,837.5000

26

XCSE

Genmab A/S

14/06/2024

1:24:03 PM

1,837.5000

20

CEUX

Genmab A/S

14/06/2024

1:24:15 PM

1,837.5000

25

CEUX

Genmab A/S

14/06/2024

1:24:20 PM

1,837.5000

8

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

27

XCSE

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

7

XCSE

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

54

XCSE

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

2

XCSE

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

39

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

30

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

30

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

16

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

7

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

1

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

5

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,837.0000

2

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

7

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

6

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

11

CEUX

126


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

16

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

6

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

25

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

22

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

22

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

22

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

11

CEUX

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

3

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

3

AQEU

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

19

XCSE

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

4

XCSE

Genmab A/S

14/06/2024

1:24:32 PM

1,836.5000

52

XCSE

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

11

XCSE

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

10

CEUX

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

10

CEUX

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

4

CEUX

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

4

CEUX

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

4

CEUX

Genmab A/S

14/06/2024

1:28:43 PM

1,839.0000

2

CEUX

Genmab A/S

14/06/2024

1:28:47 PM

1,839.0000

10

CEUX

Genmab A/S

14/06/2024

1:28:47 PM

1,839.0000

11

XCSE

Genmab A/S

14/06/2024

1:28:47 PM

1,839.0000

11

XCSE

Genmab A/S

14/06/2024

1:28:52 PM

1,839.0000

10

CEUX

Genmab A/S

14/06/2024

1:28:52 PM

1,839.0000

11

XCSE

Genmab A/S

14/06/2024

1:31:19 PM

1,840.0000

5

CEUX

Genmab A/S

14/06/2024

1:31:19 PM

1,840.0000

11

AQEU

Genmab A/S

14/06/2024

1:31:19 PM

1,840.0000

8

TQEX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

XCSE

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

16

XCSE

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

3

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

14

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

17

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

4

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

4

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

4

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

9

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

2

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

13

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

3

CEUX

Genmab A/S

14/06/2024

1:31:56 PM

1,840.5000

1

XCSE

Genmab A/S

14/06/2024

1:32:05 PM

1,840.5000

19

XCSE

Genmab A/S

14/06/2024

1:32:29 PM

1,842.5000

21

XCSE

Genmab A/S

14/06/2024

1:32:29 PM

1,842.5000

21

XCSE

Genmab A/S

14/06/2024

1:32:29 PM

1,842.5000

21

XCSE

127


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:32:32 PM

1,841.5000

46

XCSE

Genmab A/S

14/06/2024

1:32:32 PM

1,841.5000

46

XCSE

Genmab A/S

14/06/2024

1:32:33 PM

1,841.5000

27

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

10

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

7

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

13

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

7

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

3

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

3

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

10

CEUX

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

10

CEUX

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

17

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

10

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

11

XCSE

Genmab A/S

14/06/2024

1:36:53 PM

1,842.0000

10

CEUX

Genmab A/S

14/06/2024

1:38:15 PM

1,842.0000

10

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

35

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

15

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

35

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

9

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

50

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

35

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

18

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

32

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

59

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

27

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

13

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

35

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

15

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

25

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

25

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

20

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

29

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

4

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

45

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

4

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

20

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

24

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

1

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

14

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

7

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

6

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

26

CEUX

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

7

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

7

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

7

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

7

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

7

AQEU

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

1

CEUX

128


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

11

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

6

XCSE

Genmab A/S

14/06/2024

1:39:00 PM

1,842.0000

20

XCSE

Genmab A/S

14/06/2024

1:44:44 PM

1,841.0000

7

AQEU

Genmab A/S

14/06/2024

1:44:44 PM

1,841.0000

20

AQEU

Genmab A/S

14/06/2024

1:44:44 PM

1,841.0000

10

TQEX

Genmab A/S

14/06/2024

1:44:44 PM

1,841.0000

2

XCSE

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

33

XCSE

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

65

XCSE

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

58

CEUX

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

3

CEUX

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

3

CEUX

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

1

AQEU

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

8

AQEU

Genmab A/S

14/06/2024

1:45:21 PM

1,841.0000

1

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

33

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

30

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

30

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

16

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

30

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

16

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

7

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

23

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

7

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

30

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

4

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

29

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

7

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

26

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

29

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

23

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

3

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

18

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

23

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

21

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

3

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

26

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

28

XCSE

129


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

28

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

5

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,840.5000

12

XCSE

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

22

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

20

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

15

CEUX

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

1:46:30 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

1:46:35 PM

1,839.5000

33

XCSE

Genmab A/S

14/06/2024

1:46:35 PM

1,839.5000

15

XCSE

Genmab A/S

14/06/2024

1:46:35 PM

1,839.5000

16

XCSE

Genmab A/S

14/06/2024

1:46:35 PM

1,839.5000

44

CEUX

Genmab A/S

14/06/2024

1:46:35 PM

1,839.5000

35

CEUX

Genmab A/S

14/06/2024

1:53:32 PM

1,839.0000

24

XCSE

Genmab A/S

14/06/2024

1:55:38 PM

1,839.5000

4

CEUX

Genmab A/S

14/06/2024

1:55:38 PM

1,839.5000

21

TQEX

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

19

XCSE

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

2

XCSE

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

10

XCSE

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

20

CEUX

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

9

CEUX

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

9

CEUX

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

9

CEUX

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

3

AQEU

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

2

AQEU

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

9

CEUX

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

21

XCSE

Genmab A/S

14/06/2024

1:55:43 PM

1,838.5000

10

XCSE

Genmab A/S

14/06/2024

1:55:46 PM

1,838.0000

40

XCSE

Genmab A/S

14/06/2024

1:57:33 PM

1,838.5000

3

CEUX

Genmab A/S

14/06/2024

1:57:33 PM

1,838.5000

3

CEUX

Genmab A/S

14/06/2024

1:57:33 PM

1,838.5000

32

CEUX

Genmab A/S

14/06/2024

1:57:54 PM

1,838.5000

8

CEUX

Genmab A/S

14/06/2024

1:57:54 PM

1,838.5000

19

CEUX

Genmab A/S

14/06/2024

1:57:54 PM

1,838.5000

8

AQEU

Genmab A/S

14/06/2024

1:58:14 PM

1,838.5000

19

CEUX

Genmab A/S

14/06/2024

1:58:14 PM

1,838.5000

4

CEUX

Genmab A/S

14/06/2024

1:58:14 PM

1,838.5000

13

XCSE

Genmab A/S

14/06/2024

1:58:41 PM

1,838.5000

6

CEUX

Genmab A/S

14/06/2024

1:58:41 PM

1,838.5000

14

CEUX

Genmab A/S

14/06/2024

1:58:41 PM

1,838.5000

6

XCSE

Genmab A/S

14/06/2024

1:58:41 PM

1,838.5000

6

XCSE

Genmab A/S

14/06/2024

1:58:57 PM

1,838.5000

36

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

39

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

9

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

22

XCSE

130


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

1

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

42

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

1

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

42

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

17

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

42

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

6

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

6

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

6

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

6

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

6

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

1

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

26

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

9

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

17

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

42

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

24

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

6

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

48

XCSE

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

21

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

21

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

21

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

10

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

11

CEUX

Genmab A/S

14/06/2024

1:59:03 PM

1,837.5000

4

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

9

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

1

AQEU

Genmab A/S

14/06/2024

1:59:03 PM

1,838.0000

3

AQEU

Genmab A/S

14/06/2024

2:05:49 PM

1,840.5000

52

XCSE

Genmab A/S

14/06/2024

2:05:49 PM

1,840.5000

24

XCSE

Genmab A/S

14/06/2024

2:05:56 PM

1,840.5000

12

XCSE

Genmab A/S

14/06/2024

2:05:56 PM

1,840.5000

60

XCSE

Genmab A/S

14/06/2024

2:06:11 PM

1,840.5000

10

CEUX

Genmab A/S

14/06/2024

2:06:11 PM

1,840.5000

1

CEUX

Genmab A/S

14/06/2024

2:06:11 PM

1,840.5000

8

TQEX

Genmab A/S

14/06/2024

2:06:11 PM

1,840.5000

1

TQEX

Genmab A/S

14/06/2024

2:06:11 PM

1,840.5000

16

TQEX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

4

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

7

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

7

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

4

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

11

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

4

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

11

CEUX

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

12

XCSE

Genmab A/S

14/06/2024

2:06:18 PM

1,840.0000

12

XCSE

Genmab A/S

14/06/2024

2:06:24 PM

1,840.0000

12

XCSE

Genmab A/S

14/06/2024

2:06:39 PM

1,840.0000

34

XCSE

Genmab A/S

14/06/2024

2:06:39 PM

1,840.0000

56

XCSE

131


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:06:39 PM

1,840.0000

22

CEUX

Genmab A/S

14/06/2024

2:06:39 PM

1,840.0000

9

CEUX

Genmab A/S

14/06/2024

2:06:39 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:06:39 PM

1,840.0000

89

XCSE

Genmab A/S

14/06/2024

2:07:21 PM

1,840.0000

39

XCSE

Genmab A/S

14/06/2024

2:07:21 PM

1,840.0000

45

XCSE

Genmab A/S

14/06/2024

2:07:21 PM

1,840.0000

118

XCSE

Genmab A/S

14/06/2024

2:07:23 PM

1,839.5000

20

CEUX

Genmab A/S

14/06/2024

2:07:23 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

36

CEUX

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

5

AQEU

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

29

CEUX

Genmab A/S

14/06/2024

2:10:55 PM

1,840.0000

19

CEUX

Genmab A/S

14/06/2024

2:11:01 PM

1,840.0000

15

CEUX

Genmab A/S

14/06/2024

2:11:02 PM

1,840.0000

47

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

20

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

20

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

12

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

20

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

5

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

20

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

12

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

20

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

12

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

20

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

16

CEUX

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:13:11 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:15:34 PM

1,840.0000

5

CEUX

Genmab A/S

14/06/2024

2:15:34 PM

1,840.0000

3

CEUX

Genmab A/S

14/06/2024

2:15:34 PM

1,840.0000

7

CEUX

Genmab A/S

14/06/2024

2:15:34 PM

1,840.0000

2

AQEU

Genmab A/S

14/06/2024

2:15:47 PM

1,840.5000

12

TQEX

Genmab A/S

14/06/2024

2:15:53 PM

1,840.5000

8

TQEX

Genmab A/S

14/06/2024

2:15:53 PM

1,840.5000

1

TQEX

Genmab A/S

14/06/2024

2:15:59 PM

1,840.5000

8

TQEX

Genmab A/S

14/06/2024

2:15:59 PM

1,840.5000

1

TQEX

132


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:16:07 PM

1,840.5000

1

TQEX

Genmab A/S

14/06/2024

2:16:18 PM

1,840.5000

8

TQEX

Genmab A/S

14/06/2024

2:16:18 PM

1,840.5000

1

TQEX

Genmab A/S

14/06/2024

2:16:27 PM

1,840.5000

2

CEUX

Genmab A/S

14/06/2024

2:16:56 PM

1,840.0000

11

XCSE

Genmab A/S

14/06/2024

2:16:56 PM

1,840.0000

63

XCSE

Genmab A/S

14/06/2024

2:16:56 PM

1,840.0000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

23

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

3

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

9

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

9

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

14

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

12

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

23

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

3

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

9

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

8

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

12

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

12

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

21

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

21

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

9

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

1

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

8

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

1

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

8

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

11

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

9

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

1

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

2

AQEU

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

9

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

3

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

3

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

3

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

6

XCSE

133


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

6

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

6

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

7

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

37

CEUX

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

25

XCSE

Genmab A/S

14/06/2024

2:19:36 PM

1,840.5000

4

CEUX

Genmab A/S

14/06/2024

2:19:39 PM

1,840.0000

57

CEUX

Genmab A/S

14/06/2024

2:19:39 PM

1,840.0000

8

AQEU

Genmab A/S

14/06/2024

2:19:39 PM

1,840.0000

14

CEUX

Genmab A/S

14/06/2024

2:19:46 PM

1,840.0000

15

XCSE

Genmab A/S

14/06/2024

2:19:46 PM

1,840.0000

98

XCSE

Genmab A/S

14/06/2024

2:19:46 PM

1,840.0000

2

AQEU

Genmab A/S

14/06/2024

2:22:39 PM

1,840.0000

12

CEUX

Genmab A/S

14/06/2024

2:22:39 PM

1,840.0000

9

CEUX

Genmab A/S

14/06/2024

2:23:20 PM

1,840.5000

20

AQEU

Genmab A/S

14/06/2024

2:23:20 PM

1,840.5000

20

AQEU

Genmab A/S

14/06/2024

2:23:21 PM

1,840.0000

22

XCSE

Genmab A/S

14/06/2024

2:23:21 PM

1,840.0000

7

XCSE

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

22

XCSE

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

39

XCSE

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

15

XCSE

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

21

CEUX

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

10

CEUX

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

3

AQEU

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

9

AQEU

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

18

CEUX

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

3

CEUX

Genmab A/S

14/06/2024

2:23:37 PM

1,840.0000

3

AQEU

Genmab A/S

14/06/2024

2:24:08 PM

1,840.0000

46

XCSE

Genmab A/S

14/06/2024

2:24:08 PM

1,840.0000

32

XCSE

Genmab A/S

14/06/2024

2:24:08 PM

1,840.0000

21

XCSE

Genmab A/S

14/06/2024

2:24:08 PM

1,840.0000

2

XCSE

Genmab A/S

14/06/2024

2:26:10 PM

1,840.0000

25

XCSE

Genmab A/S

14/06/2024

2:27:46 PM

1,840.5000

2

CEUX

Genmab A/S

14/06/2024

2:27:46 PM

1,840.5000

38

CEUX

Genmab A/S

14/06/2024

2:27:47 PM

1,841.0000

24

TQEX

Genmab A/S

14/06/2024

2:27:47 PM

1,841.0000

5

TQEX

Genmab A/S

14/06/2024

2:28:04 PM

1,841.0000

9

TQEX

Genmab A/S

14/06/2024

2:28:04 PM

1,841.0000

16

TQEX

Genmab A/S

14/06/2024

2:28:04 PM

1,841.0000

1

TQEX

Genmab A/S

14/06/2024

2:28:35 PM

1,841.0000

9

TQEX

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

25

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

1

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

23

CEUX

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

23

CEUX

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

9

CEUX

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

4

AQEU

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

23

CEUX

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

19

CEUX

134


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

3

AQEU

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

14

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

11

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

11

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

14

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

6

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,839.5000

25

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,839.5000

5

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,839.5000

25

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,839.5000

25

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,839.5000

6

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,839.5000

4

XCSE

Genmab A/S

14/06/2024

2:28:48 PM

1,840.0000

36

CEUX

Genmab A/S

14/06/2024

2:29:54 PM

1,839.5000

15

XCSE

Genmab A/S

14/06/2024

2:29:54 PM

1,839.5000

22

CEUX

Genmab A/S

14/06/2024

2:29:58 PM

1,839.5000

51

XCSE

Genmab A/S

14/06/2024

2:29:58 PM

1,839.5000

36

XCSE

Genmab A/S

14/06/2024

2:29:58 PM

1,839.5000

1

XCSE

Genmab A/S

14/06/2024

2:29:58 PM

1,839.5000

6

XCSE

Genmab A/S

14/06/2024

2:29:58 PM

1,839.5000

20

CEUX

Genmab A/S

14/06/2024

2:29:58 PM

1,839.5000

2

XCSE

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

3

AQEU

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

2

AQEU

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

1

AQEU

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

8

AQEU

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

14

XCSE

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

6

XCSE

Genmab A/S

14/06/2024

2:32:03 PM

1,840.0000

2

XCSE

Genmab A/S

14/06/2024

2:32:30 PM

1,839.5000

37

CEUX

Genmab A/S

14/06/2024

2:32:45 PM

1,839.5000

28

CEUX

Genmab A/S

14/06/2024

2:32:45 PM

1,839.5000

12

CEUX

Genmab A/S

14/06/2024

2:33:12 PM

1,839.5000

2

AQEU

Genmab A/S

14/06/2024

2:33:12 PM

1,839.5000

3

XCSE

Genmab A/S

14/06/2024

2:33:12 PM

1,839.5000

24

XCSE

Genmab A/S

14/06/2024

2:33:39 PM

1,839.0000

44

XCSE

Genmab A/S

14/06/2024

2:33:39 PM

1,839.5000

36

CEUX

Genmab A/S

14/06/2024

2:34:03 PM

1,839.5000

20

CEUX

Genmab A/S

14/06/2024

2:34:03 PM

1,839.5000

7

CEUX

Genmab A/S

14/06/2024

2:34:03 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

2:34:03 PM

1,839.5000

2

AQEU

Genmab A/S

14/06/2024

2:34:08 PM

1,839.5000

20

CEUX

Genmab A/S

14/06/2024

2:34:08 PM

1,839.5000

4

CEUX

Genmab A/S

14/06/2024

2:34:08 PM

1,839.5000

16

CEUX

Genmab A/S

14/06/2024

2:34:08 PM

1,839.5000

4

CEUX

Genmab A/S

14/06/2024

2:34:08 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

2:35:02 PM

1,839.5000

2

CEUX

Genmab A/S

14/06/2024

2:35:02 PM

1,839.5000

5

CEUX

Genmab A/S

14/06/2024

2:35:02 PM

1,839.5000

34

CEUX

Genmab A/S

14/06/2024

2:35:42 PM

1,839.5000

39

CEUX

135


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:35:43 PM

1,839.5000

3

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

7

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

50

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

27

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

5

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

42

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

10

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

15

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

12

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

8

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

49

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

22

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

6

CEUX

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

8

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

4

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

1

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

8

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

4

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

8

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

2

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

2

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

3

AQEU

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

63

XCSE

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

29

XCSE

Genmab A/S

14/06/2024

2:36:55 PM

1,840.0000

57

CEUX

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

132

XCSE

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

18

XCSE

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

57

XCSE

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

119

CEUX

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

68

CEUX

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

17

AQEU

Genmab A/S

14/06/2024

2:38:32 PM

1,840.0000

10

AQEU

Genmab A/S

14/06/2024

2:41:05 PM

1,840.0000

9

AQEU

Genmab A/S

14/06/2024

2:41:05 PM

1,840.0000

1

AQEU

Genmab A/S

14/06/2024

2:41:05 PM

1,840.0000

118

XCSE

Genmab A/S

14/06/2024

2:42:05 PM

1,839.5000

4

CEUX

Genmab A/S

14/06/2024

2:42:08 PM

1,839.5000

159

CEUX

Genmab A/S

14/06/2024

2:42:08 PM

1,839.5000

47

CEUX

Genmab A/S

14/06/2024

2:44:11 PM

1,840.5000

13

XCSE

Genmab A/S

14/06/2024

2:44:11 PM

1,840.5000

7

XCSE

Genmab A/S

14/06/2024

2:44:11 PM

1,840.5000

20

XCSE

Genmab A/S

14/06/2024

2:44:26 PM

1,841.0000

20

XCSE

Genmab A/S

14/06/2024

2:44:26 PM

1,841.0000

17

XCSE

Genmab A/S

14/06/2024

2:44:41 PM

1,840.5000

10

CEUX

Genmab A/S

14/06/2024

2:44:41 PM

1,840.5000

3

CEUX

Genmab A/S

14/06/2024

2:44:41 PM

1,840.5000

3

AQEU

Genmab A/S

14/06/2024

2:45:08 PM

1,841.0000

1

AQEU

Genmab A/S

14/06/2024

2:45:21 PM

1,840.5000

38

CEUX

Genmab A/S

14/06/2024

2:45:35 PM

1,842.0000

3

AQEU

136


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:45:38 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:38 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:38 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:38 PM

1,841.5000

1

CEUX

Genmab A/S

14/06/2024

2:45:38 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:44 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:44 PM

1,841.5000

2

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

13

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

13

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

2

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

11

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

13

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

2

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

2

AQEU

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

10

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

5

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

7

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

8

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

5

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

2

AQEU

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

15

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

11

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

32

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

22

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

22

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

4

CEUX

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

4

AQEU

Genmab A/S

14/06/2024

2:45:53 PM

1,841.5000

7

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

35

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

35

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

24

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

24

XCSE

137


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

20

XCSE

Genmab A/S

14/06/2024

2:45:53 PM

1,841.0000

3

XCSE

Genmab A/S

14/06/2024

2:45:55 PM

1,841.0000

3

CEUX

Genmab A/S

14/06/2024

2:50:10 PM

1,840.5000

39

CEUX

Genmab A/S

14/06/2024

2:50:19 PM

1,840.0000

5

CEUX

Genmab A/S

14/06/2024

2:50:19 PM

1,840.0000

8

CEUX

Genmab A/S

14/06/2024

2:50:19 PM

1,840.0000

7

XCSE

Genmab A/S

14/06/2024

2:50:19 PM

1,840.0000

102

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

69

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

69

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

8

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

16

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

45

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

20

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

48

CEUX

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

10

AQEU

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

10

AQEU

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

10

AQEU

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

77

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

31

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

16

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

30

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

16

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

30

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

46

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

1

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

26

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

24

XCSE

Genmab A/S

14/06/2024

2:51:09 PM

1,841.5000

9

XCSE

Genmab A/S

14/06/2024

2:51:10 PM

1,841.5000

10

AQEU

Genmab A/S

14/06/2024

2:51:10 PM

1,841.5000

3

AQEU

Genmab A/S

14/06/2024

2:54:27 PM

1,840.0000

5

CEUX

Genmab A/S

14/06/2024

2:54:27 PM

1,840.0000

4

CEUX

Genmab A/S

14/06/2024

2:54:27 PM

1,840.0000

5

CEUX

Genmab A/S

14/06/2024

2:55:00 PM

1,841.0000

127

XCSE

Genmab A/S

14/06/2024

2:55:00 PM

1,841.0000

33

CEUX

Genmab A/S

14/06/2024

2:55:00 PM

1,841.0000

24

CEUX

Genmab A/S

14/06/2024

2:55:00 PM

1,841.0000

9

CEUX

Genmab A/S

14/06/2024

2:55:00 PM

1,841.0000

49

CEUX

Genmab A/S

14/06/2024

2:55:46 PM

1,840.0000

6

XCSE

Genmab A/S

14/06/2024

2:55:46 PM

1,840.0000

32

XCSE

Genmab A/S

14/06/2024

2:55:46 PM

1,840.0000

17

XCSE

Genmab A/S

14/06/2024

2:55:46 PM

1,840.0000

19

CEUX

Genmab A/S

14/06/2024

3:01:02 PM

1,841.0000

2

AQEU

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

10

CEUX

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

22

CEUX

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

11

CEUX

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

22

CEUX

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

10

CEUX

138


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

5

CEUX

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

10

CEUX

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

24

XCSE

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

23

XCSE

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

73

XCSE

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

53

XCSE

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

45

XCSE

Genmab A/S

14/06/2024

3:01:55 PM

1,841.0000

39

XCSE

Genmab A/S

14/06/2024

3:01:56 PM

1,841.0000

30

CEUX

Genmab A/S

14/06/2024

3:01:56 PM

1,841.0000

3

CEUX

Genmab A/S

14/06/2024

3:01:56 PM

1,841.0000

8

XCSE

Genmab A/S

14/06/2024

3:01:56 PM

1,841.0000

24

XCSE

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

36

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

14

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

50

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

50

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

151

XCSE

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

21

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

69

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

3

CEUX

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

16

AQEU

Genmab A/S

14/06/2024

3:02:19 PM

1,841.0000

3

AQEU

Genmab A/S

14/06/2024

3:04:04 PM

1,839.5000

113

XCSE

Genmab A/S

14/06/2024

3:04:04 PM

1,839.5000

93

CEUX

Genmab A/S

14/06/2024

3:04:04 PM

1,839.5000

5

CEUX

Genmab A/S

14/06/2024

3:04:04 PM

1,839.5000

4

CEUX

Genmab A/S

14/06/2024

3:04:04 PM

1,839.5000

5

CEUX

Genmab A/S

14/06/2024

3:04:04 PM

1,839.5000

8

XCSE

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

12

XCSE

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

8

XCSE

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

12

CEUX

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

12

CEUX

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

12

CEUX

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

6

CEUX

Genmab A/S

14/06/2024

3:06:53 PM

1,844.0000

6

XCSE

Genmab A/S

14/06/2024

3:07:50 PM

1,847.0000

20

CEUX

Genmab A/S

14/06/2024

3:07:50 PM

1,847.0000

9

CEUX

Genmab A/S

14/06/2024

3:07:50 PM

1,847.0000

20

CEUX

Genmab A/S

14/06/2024

3:07:50 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:50 PM

1,847.0000

14

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

15

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

139


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

29

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

27

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

2

CEUX

Genmab A/S

14/06/2024

3:07:55 PM

1,847.0000

17

CEUX

Genmab A/S

14/06/2024

3:10:54 PM

1,844.5000

32

XCSE

Genmab A/S

14/06/2024

3:10:54 PM

1,844.5000

44

XCSE

Genmab A/S

14/06/2024

3:10:54 PM

1,844.5000

5

AQEU

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

140

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

36

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

135

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

130

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

10

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:12:26 PM

1,845.5000

28

XCSE

Genmab A/S

14/06/2024

3:17:05 PM

1,844.5000

75

XCSE

Genmab A/S

14/06/2024

3:17:05 PM

1,844.5000

179

XCSE

Genmab A/S

14/06/2024

3:17:05 PM

1,844.5000

23

AQEU

Genmab A/S

14/06/2024

3:17:05 PM

1,844.5000

13

AQEU

Genmab A/S

14/06/2024

3:17:05 PM

1,844.5000

32

AQEU

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

81

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

6

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

18

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

20

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

30

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

7

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,845.0000

7

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,845.0000

67

XCSE

Genmab A/S

14/06/2024

3:19:35 PM

1,844.5000

11

AQEU

Genmab A/S

14/06/2024

3:21:15 PM

1,844.5000

57

XCSE

Genmab A/S

14/06/2024

3:21:48 PM

1,845.0000

8

TQEX

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

8

AQEU

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

8

AQEU

Genmab A/S

14/06/2024

3:22:02 PM

1,845.0000

27

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,845.0000

9

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

57

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

14

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

40

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

17

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

33

XCSE

Genmab A/S

14/06/2024

3:22:02 PM

1,844.5000

4

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

2

AQEU

140


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

6

AQEU

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

8

AQEU

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

57

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

10

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

3

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

44

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

44

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

16

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

18

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

23

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

57

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

57

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

13

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,844.5000

39

XCSE

Genmab A/S

14/06/2024

3:22:31 PM

1,843.5000

6

AQEU

Genmab A/S

14/06/2024

3:22:31 PM

1,843.5000

5

AQEU

Genmab A/S

14/06/2024

3:27:22 PM

1,845.0000

15

AQEU

Genmab A/S

14/06/2024

3:27:22 PM

1,845.0000

8

AQEU

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

8

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

38

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

4

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

4

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

46

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

4

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

27

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

3

AQEU

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

8

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

42

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

8

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

35

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

4

AQEU

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

2

AQEU

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

50

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

27

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

35

XCSE

Genmab A/S

14/06/2024

3:27:24 PM

1,844.5000

37

XCSE

Genmab A/S

14/06/2024

3:30:01 PM

1,842.5000

5

AQEU

Genmab A/S

14/06/2024

3:30:01 PM

1,842.5000

5

AQEU

Genmab A/S

14/06/2024

3:30:01 PM

1,842.5000

5

AQEU

Genmab A/S

14/06/2024

3:30:09 PM

1,842.0000

40

XCSE

Genmab A/S

14/06/2024

3:32:21 PM

1,844.5000

10

XCSE

Genmab A/S

14/06/2024

3:32:21 PM

1,844.5000

8

XCSE

141


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:32:21 PM

1,844.5000

15

XCSE

Genmab A/S

14/06/2024

3:32:37 PM

1,845.5000

1

AQEU

Genmab A/S

14/06/2024

3:32:43 PM

1,845.5000

8

AQEU

Genmab A/S

14/06/2024

3:32:43 PM

1,845.5000

1

AQEU

Genmab A/S

14/06/2024

3:32:43 PM

1,845.5000

16

AQEU

Genmab A/S

14/06/2024

3:32:51 PM

1,845.5000

8

AQEU

Genmab A/S

14/06/2024

3:32:51 PM

1,845.5000

1

AQEU

Genmab A/S

14/06/2024

3:32:59 PM

1,845.5000

1

AQEU

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

44

XCSE

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

33

XCSE

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

64

XCSE

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

52

XCSE

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

77

XCSE

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

28

XCSE

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

6

AQEU

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

3

AQEU

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

1

AQEU

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

8

AQEU

Genmab A/S

14/06/2024

3:34:15 PM

1,844.5000

9

AQEU

Genmab A/S

14/06/2024

3:34:22 PM

1,844.5000

21

XCSE

Genmab A/S

14/06/2024

3:34:22 PM

1,844.5000

30

XCSE

Genmab A/S

14/06/2024

3:34:22 PM

1,844.5000

21

XCSE

Genmab A/S

14/06/2024

3:34:22 PM

1,844.5000

5

XCSE

Genmab A/S

14/06/2024

3:34:22 PM

1,844.5000

6

XCSE

Genmab A/S

14/06/2024

3:34:25 PM

1,844.5000

10

XCSE

Genmab A/S

14/06/2024

3:34:28 PM

1,844.0000

23

XCSE

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

13

AQEU

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

17

AQEU

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

13

AQEU

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

10

AQEU

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

100

XCSE

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

24

XCSE

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

76

XCSE

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

100

XCSE

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

100

XCSE

Genmab A/S

14/06/2024

3:35:08 PM

1,845.0000

24

XCSE

Genmab A/S

14/06/2024

3:37:59 PM

1,845.5000

1

XCSE

Genmab A/S

14/06/2024

3:37:59 PM

1,845.5000

16

XCSE

Genmab A/S

14/06/2024

3:37:59 PM

1,845.5000

23

XCSE

Genmab A/S

14/06/2024

3:38:18 PM

1,845.5000

13

XCSE

Genmab A/S

14/06/2024

3:40:39 PM

1,845.5000

1

XCSE

Genmab A/S

14/06/2024

3:40:43 PM

1,845.5000

15

XCSE

Genmab A/S

14/06/2024

3:40:44 PM

1,845.5000

5

AQEU

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

11

AQEU

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

10

XCSE

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

91

XCSE

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

5

XCSE

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

106

XCSE

142


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:40:45 PM

1,845.5000

1

AQEU

Genmab A/S

14/06/2024

3:42:05 PM

1,846.5000

107

XCSE

Genmab A/S

14/06/2024

3:42:05 PM

1,846.5000

16

XCSE

Genmab A/S

14/06/2024

3:42:05 PM

1,846.5000

91

XCSE

Genmab A/S

14/06/2024

3:42:05 PM

1,846.5000

91

XCSE

Genmab A/S

14/06/2024

3:42:05 PM

1,846.5000

16

XCSE

Genmab A/S

14/06/2024

3:43:11 PM

1,846.5000

95

XCSE

Genmab A/S

14/06/2024

3:43:11 PM

1,846.5000

110

XCSE

Genmab A/S

14/06/2024

3:43:11 PM

1,846.5000

133

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

12

AQEU

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

17

AQEU

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

78

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

110

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

133

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

11

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

99

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

89

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

110

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

17

AQEU

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

11

AQEU

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

4

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

106

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

110

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

110

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

31

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

37

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

73

XCSE

Genmab A/S

14/06/2024

3:43:12 PM

1,846.5000

41

XCSE

Genmab A/S

14/06/2024

3:47:57 PM

1,840.0000

4

AQEU

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

71

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

66

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

95

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

24

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

95

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

42

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

4

XCSE

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

14

AQEU

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

18

AQEU

Genmab A/S

14/06/2024

3:48:55 PM

1,840.0000

14

XCSE

Genmab A/S

14/06/2024

3:50:02 PM

1,839.0000

5

AQEU

Genmab A/S

14/06/2024

3:50:02 PM

1,839.0000

35

XCSE

Genmab A/S

14/06/2024

3:50:02 PM

1,839.0000

35

XCSE

Genmab A/S

14/06/2024

3:50:03 PM

1,839.0000

35

XCSE

Genmab A/S

14/06/2024

3:50:03 PM

1,839.0000

24

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

64

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

64

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

64

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

64

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

6

XCSE

143


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

2

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

7

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

2

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

46

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

31

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

5

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

10

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

5

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

6

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

1

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,839.0000

32

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

6

AQEU

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

14

XCSE

Genmab A/S

14/06/2024

3:52:00 PM

1,838.5000

20

XCSE

Genmab A/S

14/06/2024

3:53:09 PM

1,838.5000

23

XCSE

Genmab A/S

14/06/2024

3:53:12 PM

1,838.5000

23

XCSE

Genmab A/S

14/06/2024

3:53:12 PM

1,838.5000

23

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

124

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

8

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

150

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

57

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

133

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

22

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

7

AQEU

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

9

AQEU

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

3

AQEU

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

6

AQEU

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

4

XCSE

Genmab A/S

14/06/2024

3:54:07 PM

1,839.5000

9

XCSE

Genmab A/S

14/06/2024

3:54:08 PM

1,839.5000

1

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

14

AQEU

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

16

AQEU

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

108

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

5

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

103

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

5

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

7

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

101

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

2

XCSE

Genmab A/S

14/06/2024

3:57:00 PM

1,839.5000

84

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,839.5000

14

AQEU

Genmab A/S

14/06/2024

3:57:01 PM

1,839.5000

9

AQEU

Genmab A/S

14/06/2024

3:57:01 PM

1,839.5000

24

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,839.5000

54

XCSE

144


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

3:57:01 PM

1,839.0000

3

AQEU

Genmab A/S

14/06/2024

3:57:01 PM

1,839.0000

1

AQEU

Genmab A/S

14/06/2024

3:57:01 PM

1,839.5000

5

AQEU

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

19

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

14

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

3

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

43

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

43

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

76

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

43

XCSE

Genmab A/S

14/06/2024

3:57:01 PM

1,838.5000

43

XCSE

Genmab A/S

14/06/2024

4:01:52 PM

1,841.0000

36

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

4

AQEU

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

33

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

19

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

50

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

9

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

16

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

33

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

4

AQEU

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

25

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

21

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

4

AQEU

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

22

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

29

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,841.0000

6

AQEU

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

19

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

3

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

22

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

22

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

22

XCSE

Genmab A/S

14/06/2024

4:02:10 PM

1,840.5000

22

XCSE

Genmab A/S

14/06/2024

4:02:31 PM

1,839.5000

32

XCSE

Genmab A/S

14/06/2024

4:03:20 PM

1,838.0000

75

XCSE

Genmab A/S

14/06/2024

4:03:37 PM

1,838.0000

75

XCSE

Genmab A/S

14/06/2024

4:03:37 PM

1,838.0000

75

XCSE

Genmab A/S

14/06/2024

4:03:44 PM

1,838.0000

71

XCSE

Genmab A/S

14/06/2024

4:03:47 PM

1,838.0000

43

XCSE

Genmab A/S

14/06/2024

4:03:50 PM

1,837.5000

35

XCSE

Genmab A/S

14/06/2024

4:03:50 PM

1,837.5000

10

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

95

XCSE

145


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

6

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

89

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

6

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

31

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

12

AQEU

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

4

AQEU

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

12

AQEU

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

12

AQEU

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

64

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

40

XCSE

Genmab A/S

14/06/2024

4:05:10 PM

1,837.5000

3

AQEU

Genmab A/S

14/06/2024

4:05:11 PM

1,837.0000

50

XCSE

Genmab A/S

14/06/2024

4:07:24 PM

1,836.5000

18

XCSE

Genmab A/S

14/06/2024

4:07:24 PM

1,836.5000

18

XCSE

Genmab A/S

14/06/2024

4:07:24 PM

1,836.5000

3

AQEU

Genmab A/S

14/06/2024

4:07:24 PM

1,836.5000

4

XCSE

Genmab A/S

14/06/2024

4:07:56 PM

1,836.5000

23

XCSE

Genmab A/S

14/06/2024

4:07:59 PM

1,836.5000

23

XCSE

Genmab A/S

14/06/2024

4:08:33 PM

1,837.0000

4

AQEU

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

80

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

24

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

24

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

24

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

24

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

18

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

24

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

35

XCSE

Genmab A/S

14/06/2024

4:09:04 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

35

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

2

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

146


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

17

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

5

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

22

XCSE

Genmab A/S

14/06/2024

4:09:05 PM

1,837.5000

8

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

38

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

38

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

42

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

33

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

18

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

42

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

2

AQEU

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

42

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

175

XCSE

Genmab A/S

14/06/2024

4:09:07 PM

1,836.0000

42

XCSE

Genmab A/S

14/06/2024

4:09:09 PM

1,836.0000

25

XCSE

Genmab A/S

14/06/2024

4:12:25 PM

1,831.5000

35

XCSE

Genmab A/S

14/06/2024

4:12:25 PM

1,831.5000

12

XCSE

Genmab A/S

14/06/2024

4:12:25 PM

1,831.5000

9

XCSE

Genmab A/S

14/06/2024

4:13:18 PM

1,827.5000

6

AQEU

Genmab A/S

14/06/2024

4:13:18 PM

1,827.5000

37

AQEU

Genmab A/S

14/06/2024

4:13:18 PM

1,827.5000

42

XCSE

Genmab A/S

14/06/2024

4:13:18 PM

1,827.5000

211

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

5

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

15

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:28 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:29 PM

1,832.5000

15

XCSE

Genmab A/S

14/06/2024

4:15:29 PM

1,832.5000

5

XCSE

Genmab A/S

14/06/2024

4:15:30 PM

1,832.5000

20

XCSE

Genmab A/S

14/06/2024

4:15:30 PM

1,832.5000

15

XCSE

Genmab A/S

14/06/2024

4:15:30 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:30 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:30 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:15:30 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:17:55 PM

1,833.5000

10

AQEU

Genmab A/S

14/06/2024

4:17:55 PM

1,833.5000

20

AQEU

Genmab A/S

14/06/2024

4:17:55 PM

1,833.5000

4

AQEU

Genmab A/S

14/06/2024

4:18:06 PM

1,833.5000

8

AQEU

Genmab A/S

14/06/2024

4:18:21 PM

1,834.5000

24

XCSE

Genmab A/S

14/06/2024

4:18:21 PM

1,834.5000

66

XCSE

147


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:18:47 PM

1,835.0000

13

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

6

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

28

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

22

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

99

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

50

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

35

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

152

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

121

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

31

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

3

XCSE

Genmab A/S

14/06/2024

4:19:04 PM

1,834.5000

52

XCSE

Genmab A/S

14/06/2024

4:19:53 PM

1,833.0000

22

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

50

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

50

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

62

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

50

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

34

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

120

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

42

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

27

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

30

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

105

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

10

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

24

XCSE

Genmab A/S

14/06/2024

4:20:44 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:24:57 PM

1,833.5000

16

AQEU

Genmab A/S

14/06/2024

4:24:57 PM

1,833.5000

13

XCSE

Genmab A/S

14/06/2024

4:24:57 PM

1,833.5000

4

XCSE

Genmab A/S

14/06/2024

4:25:05 PM

1,833.0000

33

XCSE

Genmab A/S

14/06/2024

4:25:05 PM

1,833.0000

52

XCSE

Genmab A/S

14/06/2024

4:25:05 PM

1,833.0000

26

XCSE

Genmab A/S

14/06/2024

4:25:05 PM

1,833.0000

2

XCSE

Genmab A/S

14/06/2024

4:25:08 PM

1,832.5000

22

XCSE

Genmab A/S

14/06/2024

4:25:08 PM

1,832.5000

22

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

6

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

13

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

16

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

3

XCSE

148


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

16

XCSE

Genmab A/S

14/06/2024

4:25:45 PM

1,832.5000

3

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

38

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

16

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

3

AQEU

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

3

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

5

XCSE

Genmab A/S

14/06/2024

4:25:46 PM

1,832.5000

14

XCSE

Genmab A/S

14/06/2024

4:25:48 PM

1,832.5000

19

XCSE

Genmab A/S

14/06/2024

4:25:48 PM

1,832.5000

4

XCSE

Genmab A/S

14/06/2024

4:26:25 PM

1,831.0000

54

XCSE

Genmab A/S

14/06/2024

4:27:04 PM

1,832.5000

61

XCSE

Genmab A/S

14/06/2024

4:27:04 PM

1,832.5000

38

XCSE

Genmab A/S

14/06/2024

4:27:04 PM

1,832.5000

25

XCSE

Genmab A/S

14/06/2024

4:27:04 PM

1,832.5000

63

XCSE

Genmab A/S

14/06/2024

4:27:17 PM

1,832.0000

19

XCSE

Genmab A/S

14/06/2024

4:27:18 PM

1,832.0000

19

XCSE

Genmab A/S

14/06/2024

4:29:15 PM

1,833.5000

37

XCSE

Genmab A/S

14/06/2024

4:29:15 PM

1,833.5000

1

XCSE

Genmab A/S

14/06/2024

4:29:26 PM

1,833.5000

30

XCSE

Genmab A/S

14/06/2024

4:29:26 PM

1,833.5000

10

XCSE

Genmab A/S

14/06/2024

4:29:29 PM

1,833.0000

33

XCSE

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

13

AQEU

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

16

AQEU

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

102

XCSE

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

90

XCSE

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

43

XCSE

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

4

AQEU

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

9

AQEU

Genmab A/S

14/06/2024

4:29:41 PM

1,832.5000

1

AQEU

Genmab A/S

14/06/2024

4:29:42 PM

1,832.5000

82

XCSE

Genmab A/S

14/06/2024

4:30:25 PM

1,832.5000

97

XCSE

Genmab A/S

14/06/2024

4:30:25 PM

1,832.5000

30

XCSE

Genmab A/S

14/06/2024

4:30:25 PM

1,832.5000

9

XCSE

Genmab A/S

14/06/2024

4:30:25 PM

1,832.5000

78

XCSE

Genmab A/S

14/06/2024

4:30:25 PM

1,832.5000

13

AQEU

Genmab A/S

14/06/2024

4:30:25 PM

1,832.5000

15

AQEU

Genmab A/S

14/06/2024

4:31:21 PM

1,831.0000

112

XCSE

Genmab A/S

14/06/2024

4:31:21 PM

1,831.0000

21

XCSE

Genmab A/S

14/06/2024

4:31:21 PM

1,831.0000

16

XCSE

Genmab A/S

14/06/2024

4:31:21 PM

1,831.0000

21

XCSE

Genmab A/S

14/06/2024

4:32:03 PM

1,830.5000

57

XCSE

Genmab A/S

14/06/2024

4:32:33 PM

1,830.0000

75

XCSE

Genmab A/S

14/06/2024

4:34:30 PM

1,831.0000

37

AQEU

Genmab A/S

14/06/2024

4:34:40 PM

1,831.0000

16

AQEU

149


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:34:40 PM

1,831.0000

1

AQEU

Genmab A/S

14/06/2024

4:34:46 PM

1,831.0000

1

AQEU

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

138

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

46

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

46

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

46

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

2

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

35

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

92

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

17

XCSE

Genmab A/S

14/06/2024

4:35:37 PM

1,830.5000

33

XCSE

Genmab A/S

14/06/2024

4:36:51 PM

1,830.5000

50

XCSE

Genmab A/S

14/06/2024

4:36:51 PM

1,830.5000

39

XCSE

Genmab A/S

14/06/2024

4:36:51 PM

1,830.5000

225

XCSE

Genmab A/S

14/06/2024

4:36:51 PM

1,830.5000

136

XCSE

Genmab A/S

14/06/2024

4:36:51 PM

1,830.5000

136

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

42

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

126

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

20

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

22

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

37

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

42

XCSE

Genmab A/S

14/06/2024

4:37:33 PM

1,829.0000

54

XCSE

Genmab A/S

14/06/2024

4:37:34 PM

1,829.0000

18

XCSE

Genmab A/S

14/06/2024

4:37:34 PM

1,829.0000

24

XCSE

Genmab A/S

14/06/2024

4:38:49 PM

1,827.5000

42

XCSE

Genmab A/S

14/06/2024

4:38:49 PM

1,827.5000

184

XCSE

Genmab A/S

14/06/2024

4:38:49 PM

1,827.5000

42

XCSE

Genmab A/S

14/06/2024

4:38:49 PM

1,827.5000

17

XCSE

Genmab A/S

14/06/2024

4:41:56 PM

1,827.5000

146

XCSE

Genmab A/S

14/06/2024

4:41:56 PM

1,827.5000

17

XCSE

Genmab A/S

14/06/2024

4:41:56 PM

1,827.5000

33

XCSE

Genmab A/S

14/06/2024

4:41:56 PM

1,827.5000

17

XCSE

Genmab A/S

14/06/2024

4:41:56 PM

1,827.5000

17

XCSE

Genmab A/S

14/06/2024

4:42:55 PM

1,827.5000

21

XCSE

Genmab A/S

14/06/2024

4:42:58 PM

1,827.0000

30

AQEU

Genmab A/S

14/06/2024

4:42:58 PM

1,827.0000

239

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

14

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

50

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

115

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

115

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

64

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

100

XCSE

Genmab A/S

14/06/2024

4:44:00 PM

1,826.5000

79

XCSE

Genmab A/S

14/06/2024

4:45:13 PM

1,829.0000

12

XCSE

Genmab A/S

14/06/2024

4:45:28 PM

1,830.0000

33

XCSE

Genmab A/S

14/06/2024

4:45:28 PM

1,830.0000

33

XCSE

Genmab A/S

14/06/2024

4:45:28 PM

1,830.0000

17

XCSE

Genmab A/S

14/06/2024

4:45:28 PM

1,830.0000

33

XCSE

150


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:45:29 PM

1,830.0000

33

XCSE

Genmab A/S

14/06/2024

4:45:29 PM

1,830.0000

4

XCSE

Genmab A/S

14/06/2024

4:45:44 PM

1,829.5000

50

XCSE

Genmab A/S

14/06/2024

4:45:44 PM

1,829.5000

50

XCSE

Genmab A/S

14/06/2024

4:45:45 PM

1,829.5000

50

XCSE

Genmab A/S

14/06/2024

4:45:45 PM

1,829.5000

12

XCSE

Genmab A/S

14/06/2024

4:46:12 PM

1,829.5000

75

XCSE

Genmab A/S

14/06/2024

4:47:08 PM

1,832.5000

37

AQEU

Genmab A/S

14/06/2024

4:47:11 PM

1,832.5000

37

AQEU

Genmab A/S

14/06/2024

4:47:15 PM

1,832.5000

37

AQEU

Genmab A/S

14/06/2024

4:47:20 PM

1,832.5000

39

AQEU

Genmab A/S

14/06/2024

4:47:29 PM

1,832.5000

34

AQEU

Genmab A/S

14/06/2024

4:47:30 PM

1,832.5000

37

AQEU

Genmab A/S

14/06/2024

4:47:32 PM

1,832.0000

50

XCSE

Genmab A/S

14/06/2024

4:47:32 PM

1,832.0000

119

XCSE

Genmab A/S

14/06/2024

4:47:32 PM

1,832.0000

84

XCSE

Genmab A/S

14/06/2024

4:47:32 PM

1,832.0000

85

XCSE

Genmab A/S

14/06/2024

4:47:32 PM

1,832.0000

58

XCSE

Genmab A/S

14/06/2024

4:47:32 PM

1,832.0000

8

XCSE

Genmab A/S

14/06/2024

4:47:45 PM

1,831.5000

98

XCSE

Genmab A/S

14/06/2024

4:47:45 PM

1,831.5000

83

XCSE

Genmab A/S

14/06/2024

4:47:45 PM

1,831.5000

4

XCSE

Genmab A/S

14/06/2024

4:47:47 PM

1,831.5000

61

XCSE

Genmab A/S

14/06/2024

4:47:47 PM

1,831.5000

68

XCSE

Genmab A/S

14/06/2024

4:47:47 PM

1,831.5000

48

XCSE

Genmab A/S

14/06/2024

4:48:26 PM

1,831.0000

8

XCSE

Genmab A/S

14/06/2024

4:49:24 PM

1,832.0000

10

AQEU

Genmab A/S

14/06/2024

4:49:24 PM

1,832.0000

16

AQEU

Genmab A/S

14/06/2024

4:49:24 PM

1,832.0000

1

AQEU

Genmab A/S

14/06/2024

4:49:24 PM

1,832.0000

9

XCSE

Genmab A/S

14/06/2024

4:49:24 PM

1,831.0000

51

XCSE

Genmab A/S

14/06/2024

4:49:25 PM

1,831.0000

21

XCSE

Genmab A/S

14/06/2024

4:49:31 PM

1,831.0000

176

XCSE

Genmab A/S

14/06/2024

4:50:23 PM

1,831.0000

174

XCSE

Genmab A/S

14/06/2024

4:50:39 PM

1,831.5000

22

XCSE

Genmab A/S

14/06/2024

4:50:39 PM

1,831.5000

17

XCSE

Genmab A/S

14/06/2024

4:50:39 PM

1,831.5000

11

XCSE

Genmab A/S

14/06/2024

4:50:39 PM

1,831.5000

11

XCSE

Genmab A/S

14/06/2024

4:50:39 PM

1,831.5000

5

XCSE

Genmab A/S

14/06/2024

4:50:39 PM

1,831.5000

11

XCSE

Genmab A/S

14/06/2024

4:51:48 PM

1,831.5000

143

XCSE

Genmab A/S

14/06/2024

4:51:48 PM

1,831.5000

90

XCSE

Genmab A/S

14/06/2024

4:51:49 PM

1,831.5000

6

XCSE

Genmab A/S

14/06/2024

4:51:49 PM

1,831.5000

41

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,834.0000

22

AQEU

Genmab A/S

14/06/2024

4:54:05 PM

1,834.0000

159

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,834.0000

79

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,833.5000

24

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,833.5000

24

XCSE

151


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for June 10 – June 14, 2024

Graphic

Genmab A/S

14/06/2024

4:54:05 PM

1,833.5000

24

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,833.5000

18

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,833.5000

6

XCSE

Genmab A/S

14/06/2024

4:54:05 PM

1,833.5000

18

XCSE

Genmab A/S

14/06/2024

4:54:06 PM

1,833.5000

2

XCSE

Genmab A/S

14/06/2024

4:54:06 PM

1,833.5000

22

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

22

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

27

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

7

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

24

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

15

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

11

XCSE

Genmab A/S

14/06/2024

4:54:18 PM

1,834.0000

1

XCSE

152