David Lacey, M.D., has served as Chairman of our board of directors since August 2019, and as a member of our board of directors since April 2016. Dr. Lacey is a biopharmaceutical consultant at David L. Lacey LLC, where he advises academic institutions, biotechnology companies, and venture capital firms, a position he has held since July 2011. Dr. Lacey currently serves on the board of directors of Arcus Biosciences, Inc., Atreca, Inc., and Inbiomotion SL. From 1994 until his retirement in 2011, Dr. Lacey held various positions, including Senior Vice President of Discovery Research, at Amgen Inc. Dr. Lacey holds a B.A. in Biology from the University of Colorado, Denver and an M.D. from the University of Colorado School of Medicine.