Hans Peter Hasler

Hans Peter Hasler is our Chief Operating Officer and has served in that position since May 2008. Prior to that, Mr. Hasler had served as Executive Vice President, Global Neurology, Head of International since October 2007 and has managed our international business since 2003, serving as Senior Vice President, International Strategic Business Unit and as Executive Vice President, International of Biogen Inc. from July 2003 until the merger. He joined Biogen as Executive Vice President, Commercial Operations in August 2001. Prior to that, Mr. Hasler was at Wyeth, where he had served as Senior Vice President, Head of Global Strategic Marketing since 1998. He was also a member of the Wyeth Executive Committee and was chairman of the Commercial Council. From 1993 to 1998, Mr. Hasler served in a variety of senior management positions for Wyeth Pharmaceuticals, including Managing Director of Wyeth Group in Germany, General Manager of Wyeth in Switzerland and General Manager of Central Eastern Europe. Prior to joining Wyeth, Mr. Hasler served as the Head of Pharma Division at Abbott AG. Mr. Hasler is a member of the Board of Directors of Acino Holding AG and Santhera Pharmaceuticals.