Susan K. Barnes — Chief Financial Officer, Principal Accounting Officer and Executive Vice President at Pacific Biosciences of California

Ms. Susan K. Barnes has been the Chief Financial Officer of Pacific Biosciences of California, Inc. since February 2010, Executive Vice President since December 2010 and as its Principal Accounting Officer since April 15, 2015. Ms. Barnes served as Senior Vice President of Pacific Biosciences of California, Inc. from February 2010 to December 2010. She has nearly 30 years experience in senior financial management. She served as the Chief Financial Officer, Senior Vice President and Assistant Secretary of Intuitive Surgical Inc. from May 1997 to November 2005. Ms. Barnes also served as Principal Accounting Officer of Intuitive Surgical Inc. She started at Intuitive Surgical as its first full-time finance person during its early development stages. From 1994 to September 1996, she founded and served as Managing Director of the Private Equity Group of Jefferies and Company Inc., an investment bank. From January 1994 to January 1995, she founded and was Managing General Partner of Westwind Capital Partners, a private equity fund. From June 1991 to January 1994, She served as Chief Financial Officer and Managing Director of BLUM Capital Partners (formerly, Richard C. Blum & Associates). From September 1985 to June 1991, she served as Vice President and Chief Financial Officer of NeXT Computer Inc. Prior to forming NeXT with Steve Jobs, she served as Controller of the Macintosh Division at Apple Computer from 1981 to 1985. Ms. Barnes served as a Director of Northstar Neuroscience Inc., since February 2, 2006. She served as a Director of Advanced BioHealing, Inc. She served as a Director of RAE Systems Inc., from July 2004 to May 17, 2006. She is President of the Board of the Nueva School. She is a Member of the Board of Trustees of Bryn Mawr College. Ms. Barnes received a B.A. from Bryn Mawr College and an MBA from the Wharton School, University of Pennsylvania.