Genmab — Earnings Release 2013

Dec 6, 2013

Company Announcement

-- Fourth pre-clinical milestone met in Lundbeck collaboration
-- €1.5 million milestone payment to Genmab

Copenhagen, Denmark; December 6, 2013 – Genmab A/S (OMX: GEN) announced today
it had reached an in vivo pre-clinical milestone in the collaboration with H.
Lundbeck A/S, triggering a €1.5 million payment (approximately DKK 11 million).
Under the collaboration with Lundbeck, Genmab creates novel human antibodies to
three central nervous system (CNS) targets identified by Lundbeck and Lundbeck
has access to Genmab’s antibody creation and development capabilities.

“This is the first in vivo milestone we’ve reached in our agreement with
Lundbeck and we remain pleased with the progress in the collaboration so far,”
said Jan van de Winkel, Ph.D., Chief Executive Officer of Genmab.

Under the terms of the collaboration, Genmab received an upfront payment of
€7.5 million in October 2010 (approximately DKK 56 million at the agreement
date). Lundbeck fully funds the development of the antibodies. If all
milestones in the agreement are achieved, the total value of the agreement to
Genmab would be approximately €38 million (approximately DKK 283 million at the
agreement date), plus single-digit royalties.

This milestone was not specifically included in our outlook for 2013; therefore
the achievement of this milestone will now put the revenue at the top end of
the guidance range.

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®), 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
www.genmab.com.

Contact:
Rachel Curtis Gravesen, Senior Vice President, Investor Relations &
Communications
T: +45 33 44 77 20; M: +45 25 12 62 60; E: r.gravesen@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
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 www.genmab.com. 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 A/S and its subsidiaries own the following trademarks: Genmab®; the
Y-shaped Genmab logo®; the DuoBody™ logo; HuMax®; HuMax-CD20®; DuoBody®,
HexaBodyTM and UniBody®. Arzerra® is a trademark of GlaxoSmithKline.

Company Announcement no. 53
CVR no. 2102 3884

Genmab A/S
Bredgade 34E
1260 Copenhagen K
Denmark