Michelle R. Griffin

Ms. Griffin has served on our Board of Directors since August 2018. Ms. Griffin currently serves as a member of the board of directors and chair of the audit committee for Acer Therapeutics, Inc (Nasdaq: ACER), Adaptive Biotechnologies Corp (Nasdaq: ADPT) and Chinook Therapeutics, Inc. (Nasdaq KDNY). She has also served on the board of directors and as audit committee chair for PhaseRx, Inc. (Nasdaq:PZRX) from 2016 to 2018, OncoGenex Pharmaceuticals Inc. (Nasdaq: OGXI) from 2008 to 2011, and Sonus Pharmaceuticals, Inc. (Nasdaq: SNUS) from 2004 to 2008. Ms. Griffin served as executive vice president, operations, and chief financial officer at OncoGenex from 2011 to 2013; served as acting chief executive, senior vice president and chief operating officer at Trubion Pharmaceuticals, Inc. (Nasdaq: TRBN) from 2009 until its acquisition in 2010 and as its chief financial officer from 2006 to 2009; and served as senior vice president and chief financial officer of Dendreon Corp. (Nasdaq: DNRN) from 2005 to 2006. Ms. Griffin began her career in the biopharmaceuticals industry in 1994 at Corixa Corp. (Nasdaq: CRXA) and served as its chief financial officer from its IPO in 1997 until 2005 when Corixa was acquired by GlaxoSmithKline plc. She received a post‐graduate certificate in accounting and an MBA from Seattle University, a B.S. in statistics and marketing from George Mason University and has passed the certified public accountant exam. Our Board of Directors believes that Ms. Griffin’s financial and accounting expertise and extensive executive experience qualifies her to serve on our Board of Directors.