Henry A. McKinnell Jr., Ph.D., Chairman

Director since October 1997

Henry A. McKinnell, Jr., age 76, is Chairman of the Board of Directors and Chairman of the Executive Committee and serves as a member of the Audit, Governance & Nominating and Compensation & Human Resources Committees of the Board of Directors. Dr. McKinnell served as the Chief Executive Officer of Optimer Pharmaceuticals, Inc. from February 2013 until October 31, 2013. He served as Chairman of the Board of Pfizer Inc., a pharmaceutical company, from May 2001 until his retirement in December 2006 and Chief Executive Officer from January 2001 to July 2006. He served as President of Pfizer Inc. from May 1999 to May 2001, and as President of Pfizer Pharmaceuticals Group from January 1997 to April 2001. Dr. McKinnell served as Chief Operating Officer of Pfizer Inc. from May 1999 to December 2000 and as Executive Vice President from 1992 to 1999. He served as the Chairman of the Accordia Global Health Foundation, is Chairman Emeritus of the Connecticut Science Center and is Life Director of the Japan Society. He currently serves as a director of ViewRay, Inc., Federal Street Acquisition Corp. and ChemoCentryx, Inc. He served as Chairman of Optimer Pharmaceuticals, Inc. until 2013 and Emmaus Life Sciences until 2015. He served as a director of Angiotech Pharmaceuticals, Inc. until 2011, Pfizer Inc. and ExxonMobil Corporation until 2007 and John Wiley & Sons until 2005.