Adrian Rawcliffe has served as a director since February 2017. Since September 2019, Mr. Rawcliffe has served as the Chief Executive Officer and on the board of directors of Adaptimmune Therapeutics plc. ( Adaptimmune ), a publicly traded clinical-stage biopharmaceutical company. Mr. Rawcliffe also serves on the board of directors of Adaptimmune Ltd., a privately-held company and subsidiary of Adaptimmune. From 2015 to September 2019, he served as Adaptimmune s Chief Financial Officer. Prior to joining Adaptimmune, Mr. Rawcliffe served in various roles at GlaxoSmithKline plc, including Senior Vice President Finance, North America Pharmaceuticals and Global Franchises from 2011 to 2015; Senior Vice President, Worldwide Business Development and R&D Finance from 2006 to 2011; Vice President, Worldwide Business Development Transactions and Ventures from 2003 to 2005; and Vice President, Deal Structuring from 2001 to 2003. From 2005 to 2006, Mr. Rawcliffe served as the President and Managing Partner of SR One Ltd. Mr. Rawcliffe began his career as a supervisor at Coopers & Lybrand (now PricewaterhouseCoopers) from 1993 to 1997. Mr. Rawcliffe received his B.Sc. in Natural Sciences from the University of Durham, England. Mr. Rawcliffe also received Chartered Accountancy training through The Institute of Chartered Accountants in England and Wales (ICAEW). We believe he is qualified to serve on our Board because of his global operating and business leadership experience working in the biopharmaceutical industry, his experience as a board member, board committee member, chief financial officer and chief executive officer of publicly-traded biotechnology companies, and his extensive operating and corporate development experience working in various roles at one of the world s largest global healthcare companies.