Keith R. Leonard, M.B.A.

Mr. Leonard has served as a member of our board of directors since September 2005. Since August 2005, Mr. Leonard has served as president and chief executive officer of Kythera Biopharmaceuticals, a biopharmaceutical company. From October 1991 to November 2004, Mr. Leonard held various positions with Amgen, Inc., a biopharmaceutical company, and its affiliates, most recently as senior vice president and general manager of Amgen Europe. Mr. Leonard holds a master of business administration from The Anderson School of Management, University of California, Los Angeles, a master of science in mechanical engineering from University of California, Berkeley, a bachelor of arts in history from University of Maryland, College Park, and a bachelor of science in engineering from University of California, Los Angeles.