Gregg H. Alton — Executive Vice President of Corporate & Medical Affairs at Gilead Sciences

Mr. Gregg H. Alton serves as an Executive Vice President of Corporate and Medical Affairs at Gilead Palo Alto, Inc. Mr. Alton has been an Executive Vice President of Corporate & Medical Affairs at Gilead Sciences, Inc. since August 03, 2009 and served as its Secretary. Mr. Alton served as Senior Vice President of Gilead Sciences, Inc. from July 2005 to August 03, 2009 and also served as its General Counsel from 2000 to August 03, 2009. He served as Vice President at Gilead Sciences, Inc. from 2001 to July 2005 and served as its Associate General Counsel from 1999 to 2001. From 2000 to 2009, Mr. Alton served various positions with Gilead, including General Counsel, Vice President and Senior Vice President. He joined Gilead in 1999. Mr. Alton served as an Attorney at the law firm of Cooley Godward LLP, where his practice focus was mergers and acquisitions, corporate partnerships and corporate finance transactions for healthcare and information technology companies. Mr. Alton served as the Chairman of the Board of BayBio. He serves as a Director of Collidion Inc. He serves as a Director BayBio. He serves as a Member of the Board of AIDS Healthcare Foundation. He serves as a Member of the advisory board of BIO Ventures for Global Health. He served as a Director of Eiger BioPharmaceuticals, Inc. until March 22, 2016. He served as an Independent Director at Sonoma Pharmaceuticals, Inc. (Oculus Innovative Sciences, Inc.) from January 16, 2008 to March 1, 2013. He served as a Non-Employee Director of Celladon Corporation since August 2013. He served as a Director of Bay Area Bioscience Association. Mr. Alton is a Treasurer and Director of the Biotechnology Industry Organization's General Counsel Committee and AIDS Healthcare Foundation. Mr. Alton holds a JD from Stanford Law School and a BA in Legal Studies from the University of California at Berkeley.