Steven D. Harr, M.D. is a co-founder of Sana and has served as our President and Chief Executive Officer since September 2018 and as a member of our Board since October 2018. Prior to Sana, Dr. Harr served as Chief Financial Officer and Head of Corporate Development at Juno, which was a public biopharmaceutical company during his tenure, from April 2014 until its acquisition by Celgene in March 2018. At Juno, Dr. Harr was responsible for the overall financial and operational strategy of the company. Prior to Juno, Dr. Harr was Managing Director and Head of Biotechnology Investment Banking at Morgan Stanley, a public multinational investment bank and financial services company, and prior to his investment banking role was the Lead Biotech Research Analyst and Co-head of Global Healthcare Research at Morgan Stanley. Dr. Harr previously served as a member of the boards of directors of Loxo, which was a public biopharmaceutical company during Dr. Harr s service as a director, until its acquisition by Eli Lilly in early 2019, and JW Therapeutics, which he co-founded. Dr. Harr was a resident in internal medicine at the University of California, San Francisco. Dr. Harr received his M.D. from the Johns Hopkins University School of Medicine and his B.A. in Economics from the College of the Holy Cross. We believe Dr. Harr is qualified to serve on our Board because of his extensive management and leadership experience with biopharmaceutical and life sciences companies.