Edward Owens has served as a director since 2013. Mr. Owens was previously partner, portfolio manager and global industry analyst with Wellington Management Company, LLP where he worked in investment management from 1974 to 2012. He was the portfolio manager of the Vanguard Health Care Fund for 28 years from its inception in May 1984 until his retirement from Wellington in December 2012. Mr. Owens serves on the board of directors of Stealth BioTherapeutics Corp. He has a B.S. in physics from the University of Virginia and an M.B.A. from Harvard Business School.