Michel Vounatsos has been appointed chief executive officer of Biogen and member of the board of directors, effective January 6, 2017. Mr. Vounatsos previously served as executive vice president and chief commercial officer at Biogen. Mr. Vounatsos succeeds George A. Scangos, Ph.D., who has led the company since 2010 and had plans to step down once a successor was found. Mr. Vounatsos joined the company in April 2016 after 20 years with Merck, where he held leadership positions of increasing...