Michael Narachi

President and Chief Executive Officer, Orexigen Therapeutics, Inc.

Mr. Narachi joined Ultragenyx as a board member in February 2015. Mr. Narachi currently serves as President and Chief Executive Officer and a director of Orexigen Therapeutics, Inc., a position he has held since March 2009. Previously, Mr. Narachi served as Chairman, Chief Executive Officer and President of Ren Pharmaceuticals, Inc., a private biotechnology company, from November 2006 to March 2009. From August 2002 to January 2008, Mr. Narachi served as chairman of the board of directors of Naryx Pharma, Inc., a private pharmaceutical company. Mr. Narachi joined Amgen in 1984 and held various senior positions throughout the organization over a 20 year career including: Vice President of Development and Representative Director for Amgen Japan; Head of Corporate Strategic Planning; Chief Operations Officer of Amgen BioPharma; and Vice President, Licensing and Business Development.  He served as General Manager of Amgen's Anemia Business from 1999 to 2003 until his retirement in 2004 as an officer and Vice President of Amgen, Inc. He currently serves as the chairman of the board of directors of Celladon Corporation, a publicly traded biotechnology company. Mr. Narachi received a B.S. in Biology and an M.A. degree in Biology and Genetics from the University of California at Davis. He received an M.B.A. from the Anderson Graduate School of Management at University of California, Los Angeles.

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