Brian G. Atwood has served as a member of our board of directors since our inception and is the chair of the nominating and corporate governance committee and a member of the audit committee. Until December 2017, he was President and CEO as well as a co-founder of Cell Design Labs, Inc., a biotechnology company focused on developing human cell engineering technology for the treatment of multiple diseases, including cancer. In 1999, he co-founded and currently serves as a Managing Director for Versant Ventures, a healthcare-focused venture capital firm. Prior to founding Versant Ventures, Mr. Atwood served as a general partner of Brentwood Associates, a venture capital firm. Mr. Atwood also serves on the boards of several pharmaceutical and biotechnology companies, including Atreca, Inc. and PhaseRx, Inc. Mr. Atwood also served on the boards of Five Prime Therapeutics (NASDAQ: FPRX), Cadence Pharmaceuticals, Inc. (NASDAQ: CADX) acquired in 2014, Immune Design (NASDAQ: IMDZ), Veracyte (NASDAQ: VCYT), Helicos Biosciences (NASDAQ: HLCS), Pharmion Corporation (acquired in 2008), and Trius Therapeutics, Inc. (NASDAQ: TSRX) acquired in 2013. Mr. Atwood holds a B.S. in biological sciences from the University of California, Irvine, a M.S. in ecology from the University of California, Davis, and an M.B.A. from Harvard University.