Michelle Griffin has served on our board of directors since March 2019. Ms. Griffin previously served on the boards of directors of Acer Therapeutics, Inc., formerly a public pharmaceutical company, HTG Molecular Diagnostics, Inc., formerly a public commercial-stage life sciences company, Chinook Therapeutics, formerly a public clinical-stage biotechnology company, PhaseRx, Inc., formerly a public life sciences company, OncoGenex Pharmaceuticals Inc. (now Achieve Life Sciences, Inc.) and Sonus Pharmaceuticals, Inc. (now Achieve Life Sciences, Inc.), and she served as chair of the audit committee during her terms on the boards of directors of several of these companies. Ms. Griffin also served as Executive Vice President, Operations, and Chief Financial Officer at OncoGenex Pharmaceuticals, Inc. from January 2011 to April 2013, served as Acting Chief Executive, Senior Vice President and Chief Operating Officer at Trubion Pharmaceuticals, Inc. from November 2009 until its acquisition in October 2010 and as its Chief Financial Officer from January 2006 to November 2009; served as Senior Vice President and Chief Financial Officer of Dendreon Corp. from August 2005 to January 2006, and served as Chief Financial Officer of Corixa Corp from October 1997 until its acquisition in August 2005. Ms. Griffin holds a BS in marketing from George Mason University and an MBA from Seattle University. We believe Ms. Griffin is qualified to serve as a member of our board of directors based on our review of her extensive operational experience in the biotechnology industry and deep experience in public company financial matters.