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Mariann Byerwalter
Independent Director

Mariann Byerwalter has served as a member of our Board since May 2010, as Chairperson of our audit committee from November 2014 to February 2017, and as a member of our audit committee since May 2010. Ms. Byerwalter has been on the Board of Directors of SRI International since October 2001 and has served as Chairman of the Board of Directors of SRI International since January 2015. Ms. Byerwalter served as the Interim President and CEO of Stanford Health Care (formerly, Stanford Hospital and Clinics) from January 2016 to July 2016. Prior to this, Ms. Byerwalter served as Chairman of the Board of Directors of Stanford Health Care from 2006 to 2013. She currently serves on the board of directors of Pacific Life Insurance Company, Franklin Resources, Inc., Redwood Trust, Inc., the Burlington Capital Group, Stanford Health Care, and Stanford Children’s Health. Ms. Byerwalter is a Trustee Emerita of the Stanford University Board of Trustees, having served three terms as a Trustee between 1992 and 2012. Ms. Byerwalter was Chief Financial Officer and Vice President for Business Affairs of Stanford University from February 1996 through February 2001. Prior to this she was a partner and co-founder of America First Financial Corporation, which raised funds to purchase and turn-around failed savings and loans from the government. Before this she was Vice President for Strategic Planning and Corporate Development at BankAmerica Corporation, managing acquisitions and divestitures for BankAmerica. Ms. Byerwalter received an M.B.A. from Harvard Business School and a B.A. in Economics and Political Science/Public Policy from Stanford University. We believe Ms. Byerwalter possesses specific attributes that qualify her to serve as a member of our Board and to serve as Chairperson of our audit committee, including her experience as a company executive and her financial and accounting expertise with public companies.