February 28, 2019

David Eatwell
Chief Financial Officer
Genmab A/S
Kalvebod Brygge 43
1560 Copenhagen V, Denmark

       Re: Genmab A/S
           Draft Registration Statement on Form F-1
           Submitted on February 5, 2019
           CIK No. 0001434265

Dear Mr. Eatwell:

       We have reviewed your draft registration statement and have the
following comments. In
some of our comments, we may ask you to provide us with information so we may
better
understand your disclosure.

       Please respond to this letter by providing the requested information and
either submitting
an amended draft registration statement or publicly filing your registration
statement on
EDGAR. If you do not believe our comments apply to your facts and circumstances
or do not
believe an amendment is appropriate, please tell us why in your response.

      After reviewing the information you provide in response to these comments
and your
amended draft registration statement or filed registration statement, we may
have additional
comments.

Draft Registration Statement on Form F-1

Prospectus Summary, page 1

1.     We note your references to "low double digit royalties," "royalties [in]
low double-digits,"
       and "royalties with rates in the double-digits" on pages 5, 97, 139,
150, and 152. Please
       revise your disclosure throughout the prospectus to narrow the royalty
range to no more
       than ten percentage points (for example between twenty and thirty
percent).
2.     Please define "stringent complete response" and explain how it differs
from complete
       response. In addition, please explain what you mean by "blockbuster
status."
 David Eatwell
FirstName LastNameDavid Eatwell
Genmab A/S
Comapany NameGenmab A/S
February 28, 2019
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Implications of Being an Emerging Growth Company and a Foreign Private Issuer,
page 10

3.       Please provide us with copies of all written communications, as
defined in Rule 405
         under the Securities Act, that you, or anyone authorized to do so on
your behalf, present
         to potential investors in reliance on Section 5(d) of the Securities
Act, whether or not they
         retain copies of the communications.
Risk Factors, page 16

4.       Please add risk factor disclosure addressing the risks to investors
posed by the arbitration,
         exclusive forum and jury trial waiver provisions contained in your
deposit agreement.
Use of Proceeds, page 70

5.       Please disclose the principal reasons for the offering, as you do not
disclose any specific
         plans for the proceeds. Please refer to Item 4.A of Form F-1 and Item
3.C of Form 20-F.
Key Components of Our Results and Related Trends , page 78

6.       Regarding your expectations for Arzerra net sales in the near future,
as set forth in the
         third full paragraph on page 79, please disclose whether you expect
them to decrease. In
         this regard, we note your disclosure about Novartis' ongoing
transition of Arzerra to
         limited availability in most jurisdictions. Please also update your
disclosure in the
         prospectus summary as necessary.
Management's Discussion and Analysis of Financial Condition and Results of
Operations
Research and Development Expenses, page 83

7.       We note that your table on page 84 shows third-party costs incurred
for research, contract
         manufacturing of your product candidates and clinical and regulatory
services, which also
         presents other costs and overhead consisting of third-party costs for
your pre-clinical stage
         programs, personnel, facilities and other indirect costs not directly
charged to
         development programs. Please disclose your research and development
expenses incurred
         to date similar to the presentation in this table.
Business
Griffin (MMY2004), page 118

8.       Please disclose what were the adverse and serious adverse events
referenced in the "safety
         data" subsection on page 119. In addition, please disclose all adverse
events in the
         MIRROR study on page 131.
MIRROR, page 131

9.       We note your reference here that "[i]maging showed that all subQ
ofatumumab doses
         demonstrated efficacy." As currently drafted, this statement could
imply that the FDA has
 David Eatwell
FirstName LastNameDavid Eatwell
Genmab A/S
Comapany NameGenmab A/S
February 28, 2019
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FirstName LastName
         approved, or will more easily approve, your product candidates. Please
revise throughout
         the prospectus to remove any implication that your product candidates
are more likely
         than others to receive FDA approval or explain to us why such
statements are appropriate
         given the stage of your product candidates.
Collaboration with Novartis, page 132

10.      We note your references to "decreasing global demand for Arzerra" on
page 133 and
         Novartis' decision to transition the commercial availability of the
drug to limited
         availability through manged access programs. Please disclose the
reasons for decreased
         global demand of the drug, if known.
Collaborations and Other Agreements for our Partnered Product Candidates, page
151

11.      Regarding the descriptions of the Immatics Research Collaboration and
Novo Nordisk
         DuoBody Collaboration on page 153, please disclose what the "tiered
royalties on net
         sales," or their ranges, are under the Immantics Research
Collaboration. Also, please
         disclose the maximum aggregate milestone payments under the Nordisk
DuoBody
         Collaboration.
Other Enabling Technologies
Medarex UltiMAb System License, page 154

12.      Please file the license agreement with Medarex as an exhibit to your
registration statement
         or tell us why you believe it is not required to be filed. In
addition, please disclose the
         aggregate milestone and royalty payments under this agreement.
Management
Compensation, page 185

13.      Please update the aggregate compensation for your officers and
directors for the fiscal
         year ended December 31, 2018.
Certain Senior Management Agreements , page 187

14.      Please either tell us why you believe you are not required to file the
senior management
         agreements as exhibits to the registration statement or file them as
exhibits. Please refer
         to Item 8.A of Form F-1 and Item 601(b)(10) of regulation S-K.
Jury Trial Waiver, page 219

15.      Please disclose here that the waiver of the right to a jury trial
contained in the deposit
         agreement is not intended to be deemed a waiver by any holder or
beneficial owner of
         ADSs of the company's or the depositary's compliance with the U.S.
federal securities
         laws and the rules and regulations promulgated thereunder. In
addition, please ensure that
         the filed deposit agreement provides that no disclaimer of liability
under the Securities Act
 David Eatwell
FirstName LastNameDavid Eatwell
Genmab A/S
Comapany NameGenmab A/S
February 28, 2019
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         or the Exchange Act is intended by any provision of the deposit
agreement. Finally,
         please ensure that the arbitration provision in the deposit agreement
provides that the
         provision does not preclude holders and beneficial owners from
pursuing claims under the
         Securities Act or the Exchange Act in federal courts.
Notes to the Consolidated Financial Statements
1.2 New Accounting Policies and Disclosures, page F-12

16.      With respect to your adoption of IFRS 15, you disclose that you will
recognize sales-
         based royalties and commercial sales-based milestones in the period to
which the sales
         relate based on estimates provided by collaborations partners, which
is consistent with
         your current accounting policies. However, on page F-14, you disclose
that your current
         accounting policy is to recognize revenue when third-party results are
available and are
         deemed to be reliable. Please tell us why you believe it is
appropriate to delay recognition
         until the sales information is received under paragraph B63 of IFRS
15.
Part II
Exhibit Index, page II-3

17.      Please either file the following agreements as exhibits to your
registration statement or tell
         us why you believe they are not required to be filed:
           agreement with BioNTech, which is discussed on page 78;
           collaboration agreement with Roche, which is discussed on page 152;
           agreement with Lundbeck, which is discussed on page 152; and
           direct license from Immunex Corporation, which is discussed on page
152.
18.      Please file a list of your subsidiaries as an exhibit to your
registration statement. Please
         refer to Item 601(b)(21) of Regulation S-K.
Signatures, page II-4

19.      Please revise the introductory language to the registrant's signature
block to add the
         certification required by Form F-1 that the registrant has reasonable
grounds to believe it
         meets all of the requirements for filing Form F-1.
 David Eatwell
Genmab A/S
February 28, 2019
Page 5

       You may contact Isaac Esquivel at (202) 551-3395 or Kate Tillan at (202)
551-3604 if
you have questions regarding comments on the financial statements and related
matters. Please
contact Tonya K. Aldave at (202) 551-3601 or Dietrich King at (202) 551-8071
with any other
questions.



                                                          Sincerely,
FirstName LastNameDavid Eatwell
                                                          Division of
Corporation Finance
Comapany NameGenmab A/S
                                                          Office of Healthcare
& Insurance
February 28, 2019 Page 5
cc:       Harald Halbhuber
FirstName LastName