Board of Directors
Stephen G. Dilly, MBBS, PhD, is the President and Chief Executive Officer and a member of Board of Directors of Sierra Oncology since June 2020. Previously, Dr. Stephen Dilly brings three decades of executive management experience in the biopharmaceutical industry. Most recently, Dr. Dilly served as CEO and Board Member of Aimmune Therapeutics. Dr. Dilly has served in executive roles at Genentech, Chiron and SmithKline Beecham and has been associated with the development and launch of many marketed drugs across multiple therapeutic areas. Dr. Dilly also currently serves on the Board of Directors of several private companies. He holds an MBBS from the University of London and a PhD in Cardiac Physiology from University of London.