Dennis G. PodlesakChairman of the Board of Directors

has served as chairman of our board of directors since December 2008. Since November 2007, Mr. Podlesak has served as a partner at Domain Associates, LLC, a life science-focused venture capital firm. While at Domain, Mr. Podlesak has been the founder and the Chief Executive Officer of a number of companies, including Calixa Therapeutics, Inc., a privately held biopharmaceutical company which was acquired by Cubist Pharmaceuticals, Inc. in December 2009. Mr. Podlesak was also the Executive Chairman of Corthera, Inc., a privately held biopharmaceutical company, which was acquired by Novartis AG in January 2010. Prior to joining Domain, from 2005 to 2007, Mr. Podlesak served as the Founder and Chief Executive Officer of Cerexa, Inc., a privately held biotechnology company, which became a wholly owned subsidiary of Forest Laboratories, Inc. after being acquired by Forest in January 2007. From 2004 to 2005, Mr. Podlesak served as the Chief Executive Officer of Peninsula Pharmaceuticals Inc., a privately held pharmaceutical company, and in June 2005, he led the sale of Peninsula to Ortho-McNeil Pharmaceutical, Inc., a subsidiary of Johnson & Johnson. Prior to joining Peninsula, Mr. Podlesak held various senior executive positions at Novartis AG, a publicly traded healthcare company, Allergan plc, a publicly traded healthcare company, and SmithKline Beecham (now GlaxoSmithKline plc, a publicly traded pharmaceutical company). Mr. Podlesak currently serves on the board of Tobira Therapeutics, Inc., a publicly traded biotechnology company, as well as on a number of private company boards. Until January 2015, Mr. Podlesak served on the board of Avanir Pharmaceuticals, Inc., a publicly traded biopharmaceutical company. Mr. Podlesak received a B.A. and an M.B.A. from Pepperdine University, and has completed postgraduate studies at the Wharton School, University of Pennsylvania.

Briggs W. Morrison, M.D.Chief Executive Officer and Director

Briggs W. Morrison, M.D. has served as our Chief Executive Officer since June 2015 and as a member of our board of directors since July 2015. Dr. Morrison currently serves as a managing director of MPM Capital, a healthcare-focused venture capital firm, since June 2015. Prior to joining us, he served as Executive Vice President, Global Medicines Development and Chief Medical Officer at AstraZeneca plc, a publicly traded company, from January 2012 to June 2015, leading the company’s global, late-stage development organization and serving as a member of the AstraZeneca senior executive team. He previously held a number of positions at Pfizer Inc., a publicly traded company, from 2007 to January 2012 that culminated in his appointment as Head, Medical Affairs, Safety and Regulatory Affairs for Pfizer’s human health business, and also served in roles of increasing responsibility at Merck Research Laboratories, a division of Merck & Co., Inc., from 1995 to 2007, ascending to the role of Vice President, Clinical Sciences, Oncology, responsible for clinical development of all novel anti-cancer drugs. Dr. Morrison was chairman of the board of TransCelerate BioPharma Inc., an industry-funded company charged with improving aspects of clinical trials, from 2014 to 2015, a member of the executive committee of the Clinical Trials Transformation Initiative (CTTI) sponsored by FDA, and is on the board of ACRES (Alliance for Clinical Research Excellence and Safety). Dr. Morrison received a B.S. in biology from Georgetown University and an M.D. from the University of Connecticut.

Henry ChenDirector

Henry Chen has served as a member of our board of directors since June 2015. Mr. Chen is the Managing Partner of Delos Capital Fund LP, a healthcare-focused venture capital fund. Prior to establishing Delos in 2014, Mr. Chen was a Partner and Co-Head of Asia at Permira Advisers LLP, a European private equity firm. Prior to joining Permira in 2008, Mr. Chen spent nine years in Investment Banking at Goldman Sachs & Co., where he was a Managing Director and co-headed the General Industrials Group, Asia (excluding Japan), which covered the consumer retail, healthcare, industrials and transportation sectors. Prior to that, Mr. Chen was a corporate finance lawyer with Davis Polk & Wardwell LLP in New York and Hong Kong. Mr. Chen received a B.A. and an M.A. from Harvard University and a J.D. from Harvard Law School.

Fabrice Egros, Ph.D.Director

Fabrice Egros, Ph.D. has served as a member of our board of directors since September 2013. Since October 2015, Dr. Egros has served as President, Asia Pacific and Japan of Lupin Limited, an Indian publicly traded pharmaceutical company. From November 2012 to September 2015, Dr. Egros served as the Deputy Chief Executive Officer/Chief Operating Officer of NovaMedica LLC, a privately held pharmaceutical company, and was its Chief Operating Officer and a member of its board of directors from July 2012 to September 2015. From February 2011 to July 2012, Dr. Egros served as the Chief Operating Officer of Xanodyne Pharmaceuticals, Inc., a privately held pharmaceutical company. From September 2009 to February 2011, he served as the Senior Vice President, Corporate Business Development and Strategy of UCB, S.A., a publicly traded biopharmaceutical company. From August 2006 to August 2009, Dr. Egros served as the President of UCB, Inc., a subsidiary of UCB, S.A., and from September 2003 to August 2006, he served as the President of UCB Japan Co. Ltd., a subsidiary of UCB, S.A. Prior to joining UCB, Dr. Egros held various management and executive positions at Parke-Davis, Warner Lambert Company, a privately held pharmaceutical company, and Sanofi, formerly known as Sanofi-Aventis, a publicly traded pharmaceutical company. Dr. Egros received a B.S. in Pharmacokinetics and Metabolism from Schiller International University and a Pharm.D. and Ph.D. in Pharmaceutical Sciences from Chatenay Malabry University, and has participated in the Advanced Management Program at Harvard University.

Luke Evnin, Ph.D.Director

Luke Evnin, Ph.D. has served as a member of our board of directors since May 2012. Dr. Evnin has served as a managing director at MPM Capital, a healthcare-focused venture capital firm, since he co-founded MPM’s asset management business in 1997. Prior to joining MPM, Dr. Evnin spent seven years at Accel Partners, a venture capital firm, including four years as general partner. Dr. Evnin currently serves on a number of private company boards, and has served as director of several public companies, including Enteromedics Inc, Epix Medical, Inc., Intercell AG, Metabasis Therapeutics, Inc. (acquired by Ligand Pharmaceuticals, Inc.), Oscient Pharmaceuticals Corp., Pacira Pharmaceuticals, Inc., Restore Medical, Inc. (acquired by Medtronic, Inc.), Sonic Innovations, Inc. and Signal Pharmaceuticals, Inc. (acquired by Celgene Corporation). Dr. Evnin received an A.B. in Molecular Biology from Princeton University and a Ph.D. in Biochemistry from the University of California, San Francisco.

Kim P. Kamdar, Ph.D.Director

Kim P. Kamdar, Ph.D. has served as a member of our board of directors since September 2006. Dr. Kamdar joined Domain Associates, LLC, a life science-focused venture capital firm, in January 2005 and has served as a partner at Domain since January 2011. Prior to joining Domain, Dr. Kamdar spent two years as a Kauffman Fellow with MPM Capital, Inc., a healthcare-focused venture capital firm. She also served as a research director at Novartis AG, a publicly traded healthcare company, and founded Aryzun Pharmaceuticals, Inc., a privately held biotechnology company. Dr. Kamdar currently serves as director of Neothetics, Inc, a publicly traded pharmaceutical company, and also serves on a number of private company boards. Dr. Kamdar received a B.A. from Northwestern University and a Ph.D. from Emory University.

Ivor Royston, M.D.Director

Ivor Royston, M.D. has served as a member of our board of directors since September 2013. In 1990, Dr. Royston founded Forward Ventures, a life science-focused venture capital firm, where he has served as a managing member. Prior to founding Forward Ventures, Dr. Royston spent 10 years as the founding President and Chief Executive Officer of the Sidney Kimmel Cancer Center, a non-profit organization, and 12 years on the faculty of the medical school and cancer center at the University of California, San Diego. Dr. Royston also co-founded IDEC Corporation, which merged with Biogen, Inc. to form Biogen Idec, Inc. (now Biogen, Inc.), a publicly traded biotechnology company, and Hybritech, Inc. which was acquired by Eli Lilly & Company, a publicly traded company. Dr. Royston has served on a number of public and private company boards, and is currently a member of the board of directors of Biocept, Inc., a publicly traded molecular cancer diagnostic company, and MMRGlobal, Inc., a publicly traded health record company. Dr. Royston received a B.A. in Human Biology and an M.D. from Johns Hopkins University, and has completed post-doctoral training in Internal Medicine and Medical Oncology at Stanford University.

Richard P. SheaDirector

Richard P. Shea has served as a member of our board of directors since January 2014. Since July 2007, Mr. Shea has served as Senior Vice President and Chief Financial Officer of Momenta Pharmaceuticals Inc., a publicly traded biotechnology company, and has been its Vice President and Chief Financial Officer since October 2003. Prior to joining Momenta, he served as Chief Operating Officer and Chief Financial Officer of Variagenics Inc., a publicly traded pharmacogenomics company, that was merged with Hyseq Pharmaceuticals Inc., and as Vice President, Finance of Genetics Institute, Inc., a publicly traded biotechnology company, which was acquired by Wyeth Pharmaceuticals, Inc., which was then acquired by Pfizer, Inc. Mr. Shea is a certified public accountant and received an A.B. from Princeton University and an M.B.A. from the Public Management Program at Boston University.

George W. Sledge Jr., M.D.Director

George W. Sledge Jr., M.D. has served as a member of our board of directors since January 2014. Since January 2013, Dr. Sledge has been Professor and Chief of Medical Oncology at Stanford University Medical Center. Dr. Sledge served as a Co-director of the breast cancer program at the Indiana University Simon Cancer Center from 1989 to 2012, and was a Professor of Medicine and Pathology at the Indiana University School of Medicine from 1994 to 2013. From 2010 to 2011, Dr. Sledge served as the President of the American Society of Clinical Oncology, a professional organization representing oncologists. Dr. Sledge is currently Associate Editor of JAMA Oncology, and has served as a member of the External Advisory Committee for The Cancer Genome Atlas project, chairman of the Breast Committee of the Eastern Cooperative Oncology Group, chairman of the Education Committee of the American Society of Clinical Oncology, a member of the Department of Defense Breast Cancer Research Program’s Integration Panel, and a member of the Food and Drug Administration’s Oncology Drug Advisory Committee, and the NCI’s Clinical Trials Advisory Committee. Dr. Sledge received a B.A. from the University of Wisconsin and an M.D. from Tulane University.