Michael A. Metzger is a Class I director who has served as our Chief Executive Officer since February 2022 and previously served as our President and Chief Operating Officer since May 2015 and has been a member of our Board since July 2019. Prior to joining us, Mr. Metzger was President and COO from December 2013 to October 2014 and President and Chief Executive Officer and a member of the board of directors of Regado Biosciences, Inc., a former publicly traded biotechnology company that merged with Tobira Therapeutics, Inc., from October 2014 to May 2015, where he oversaw the company s successful merger with Tobira Therapeutics, Inc. in 2015. Previously, Mr. Metzger served as Executive Vice President and Chief Operating Officer at Mersana Therapeutics, Inc., a then privately held biopharmaceutical company developing novel immunoconjugate therapies for cancer, from March 2011 to November 2013, and in senior business development positions including leading mergers and acquisitions at Forest Laboratories, LLC, which was acquired by Allergan plc, a publicly traded company, from 2006 to February 2011. Prior to Forest, Mr. Metzger served as Vice President Corporate Development at Onconova Therapeutics, Inc. and was a Managing Director at MESA Partners, Inc., a venture capital firm. Mr. Metzger currently serves on the board of directors of Pyxis Oncology, a publicly traded biotechnology company. He previously served on the board of directors of CTI Biopharma Corp., a publicly traded biopharmaceutical company. Mr. Metzger received a B.A. from George Washington University and an M.B.A. in Finance from the New York University Stern School of Business. We believe that Mr. Metzger s executive experience and his current and previous membership on the board of directors of other biotechnology companies qualify him to serve as a member of our Board.