Major Shareholder Announcement

Major Shareholder Announcement

Company Announcement

  *Major shareholder announcement for Genmab A/S

COPENHAGEN, Denmark, Oct. 16, 2012 (GLOBE NEWSWIRE) -- Genmab A/S
(Copenhagen:GEN) announces under reference to Section 29 of the Danish
Securities Trading Act that Johnson & Johnson Development Corporation (JJDC)
has informed us that as of October 16, 2012 their ownership in Genmab A/S
consists of 5,400,000 shares, which amounts to 10.73% of the total shares in
the company. At the same time Hendrikus Hubertus Franciscus Stienstra has
informed us that as of October 16, 2012 his ownership in Genmab A/S (partly
through Mercurius Beleggingsmaatschappij B.V., Stimex Participatie
Maatschappij B.V., De Thermen Beheer B.V. and Mosam Onroerend Goed B.V.)
consists of 4,842,268 shares, which in total amounts to 9.63% of the total
shares in the company.

About Genmab A/S

Genmab is a publicly traded, international biotechnology company specializing
in the creation and development of differentiated human antibody therapeutics
for the treatment of cancer. Founded in 1999, the company's first marketed
antibody, ofatumumab (Arzerra(r)), was approved to treat chronic lymphocytic
leukemia in patients who are refractory to fludarabine and alemtuzumab after
less than eight years in development. Genmab's validated and next generation
antibody technologies are expected to provide a steady stream of future
product candidates. Partnering of innovative product candidates and
technologies is a key focus of Genmab's strategy and the company has alliances
with top tier pharmaceutical and biotechnology companies. For more
information visit


Rachel Curtis Gravesen, Senior Vice President, Investor Relations &
T: +45 33 44 77 20; M: +45 25 12 62 60; E:

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
pre-clinical 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 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 Genmab does not
undertake any obligation to update or revise forward looking statements in
this Company Announcement nor to confirm such statements in relation to actual
results, unless required by law.

Genmab^(r); the Y-shaped Genmab logo^(r); HuMax^(r); HuMax-CD20^(r);
DuoBody(tm)and UniBody^(r)are all trademarks of Genmab A/S. Arzerra^(r) is a
trademark of GlaxoSmithKline.

Company Announcement no. 26
CVR no. 2102 3884

Genmab A/S
Bredgade 34E
1260 Copenhagen K
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