- Continued strong focus on cost control with improvement in first half operating loss and cash burn over 2010 - Improving 2011 guidance as result of DKK 25 million reduction in operating expenses - Announced HuMax-CD74™ antibody-drug conjugate program with Seattle Genetics - Decisive move to minimize future spending by winding down the zalutumumab program In order to read Genmab's Interim Report for the 6 months ended June 30, 2011 please see the attached file. Contact: Rachel Curtis Gravesen, Senior Vice President, Investor Relations & Communication T: +45 33 44 77 20 M: +45 25 12 62 60 E: r.gravesen@genmab.com www.genmab.com Company Announcement no. 24 CVR no. 2102 3884 Genmab A/S Bredgade 34 1260 Copenhagen K Denmark