David B. Singer
David B. Singer has served as a member of our board of directors since September 2011. Since December 2004, Mr. Singer has held various positions at Maverick Capital, Ltd., an investment firm, including Managing Partner of Maverick Ventures since February 2015. From July 2013 to January 2017, Mr. Singer served as a health commissioner of the City of San Francisco and a member of the San Francisco General Hospital Joint Conference Committee. Since June 2010, Mr. Singer has served on the board of directors of Castlight Health, Inc., a publicly traded healthcare navigation company. From December 2006 to May 2013, he served on the board of directors of Pacific Biosciences of California, Inc. a publicly traded biotechnology company. Mr. Singer serves on the boards of several privately held healthcare companies. Mr. Singer earned a B.A. in History from Yale University and an M.B.A. from Stanford University. We believe Mr. Singer is qualified to serve on our board of directors because of his significant healthcare experience.