Former Sanofi head Christopher A Viehbacher appointed as Biogen new President, CEO

Stelios Papadopoulos, Ph.D., Chairman of the Board of Biogen, said: "Chris is the rare pharma executive who has a keen understanding of the complexities involved in running a multibillion-dollar global pharma business as well as a deep appreciation for the value of innovation. It was the combination of these attributes that enabled him to turn around Sanofi and leave behind a much better company compared to the one he inherited. I look forward to Chris leading Biogen to the next chapter of its evolution and, on behalf of the board, I pledge our support to his effort."

Mr. Viehbacher said: "It is both an honor and an exciting opportunity to join the Biogen team. I greatly admire Biogen for its determination and resilience in pioneering important new medicines to address some of the most difficult and challenging conditions in healthcare. I am inspired by Biogen's mission and untapped potential and look forward to working with the dedicated Biogen team to build an even stronger company for the benefit of patients, stakeholders and investors."

Mr. Papadopoulos added, "I want to thank Michel for his significant contributions to Biogen and for his passionate commitment to our mission. He will be leaving Biogen with strong foundations for growth. We appreciate that Michel will remain employed by the company for a limited period of time to help ensure a smooth transition."

Mr. Vounatsos said, "It has been a privilege to lead this great company and work with so many outstanding people for nearly six years. With 30 clinical programs, 12 of which are in Phase 3 or filed, Biogen is at an important inflection point in CNS drug discovery and development. I am confident that Chris will be an excellent new leader of Biogen. With several potential breakthroughs in areas of high unmet needs on the horizon, I believe the best is yet to come for Biogen and its patients."