David W. Gryska has been a member of our Board since November 2010.From May 2012 until December 2012, Mr. Gryska served as Chief Operating Officer of Myrexis Inc., a biotechnology company.From December 2006 to October 2010, Mr. Gryska served as Senior Vice President and Chief Financial Officer of Celgene Corporation, a biopharmaceutical company.From October 2004 to December 2006, he was a principal at Strategic Consulting Group, where he provided strategic consulting to early-stage biotechnology companies.Prior to that time, Mr. Gryska held positions at Scios, Inc. and Cardiac Pathways Corporation and served as a partner at Ernst & Young LLP.Mr. Gryska currently serves as a member of the board of directors of Seattle Genetics, Inc.Mr. Gryska holds an M.B.A. from Golden Gate University and a B.A. in accounting and finance from Loyola University.