Douglas Miller has served as a member of our board of directors and member of our audit committee and compensation committee since July 2015. Mr. Miller has also served as a member of our nominating and governance committee since August 2016. Mr. Miller has been serving as a member of the board of directors of CareDx, a publicly traded molecular diagnostics company, since July 2016. He currently serves as chairman of the audit committee of CareDx. Mr. Miller also served as a member of the board of directors and as chairman of the audit committee of Procera Networks, a policy enforcement solutions company, from May 2013 to June 2015. Previously, Mr. Miller served as our chief financial officer from May 2006 to June 2012. From July 2005 to May 2006, Mr. Miller served as vice president and chief financial officer of Longboard, Inc., a privately held provider of telecommunications software. From October 1998 to July 2005, Mr. Miller held various management positions at Synplicity, Inc., a publicly traded electronic design automation company acquired by Synopsys, Inc., including senior vice president of finance and chief financial officer. Prior to that time, Mr. Miller also served as chief financial officer of 3DLabs, Inc., a publicly held graphics semiconductor company, and as a partner at Ernst & Young LLP, a professional services organization. Mr. Miller is a certified public accountant (inactive). He holds a B.S.C. in Accounting from Santa Clara University. Our nominating and governance committee believes that Mr. Miller's experience as a chief financial officer and board member of public companies gives him insight and perspective into how other boards function and enables him to be an effective board member. As our former chief financial officer, Mr. Miller has a unique understanding of our operations. These skills and experience are extremely valuable to our board of directors.