Sana Biotechnology SANA

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 Therapeutics, Inc. (Juno), which was a public biopharmaceutical company during his tenure, from April 2014 until its acquisition by Celgene Corporation (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 Oncology, Inc. (Loxo), which was a public biopharmaceutical company during Dr. Harr's service as a director, until its acquisition by Eli Lilly and Company (Eli Lilly) in early 2019, and JW (Cayman) Therapeutics Co. Ltd (JW Therapeutics), a public cell therapy company in China that 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. Effective as of February 17, 202, Steven D. Harr, M.D., the Company's President and Chief Executive Officer, ceased serving as acting Principal Financial Officer.

Robert L. Rosiello has served as an Executive Partner at Flagship Pioneering (Flagship), which conceives, creates, resources, and develops first-in-category bioplatform companies, since 2018, where he focuses on building capability to help originate, manage, and grow Flagship's portfolio companies. Prior to Flagship, Mr. Rosiello held various positions at McKinsey & Company (McKinsey), a privately held management consulting firm, from 1984 to 2015, most recently serving as a Senior Partner, where he advised chief executive officers and boards of directors of leading healthcare, technology, and consumer companies and served as a member of McKinsey's Senior Partner Review Committee and Compensation Committee. From July 2015 to August 2016, Mr. Rosiello served as Executive Vice President and Chief Financial Officer at Valeant Pharmaceuticals International, Inc., where he led the finance, human resources, and information technology functions. Mr. Rosiello currently serves on the board of directors of Seres Therapeutics, Inc., a public biotechnology company. He also serves on the board of trustees of the Marine Biological Laboratory in Woods Hole and the New England Conservatory of Music. He previously served on the boards of directors of Axcella Health Inc., Evelo Biosciences, Inc., and Omega Therapeutics, Inc., each of which was a public biotechnology company during his service as a director, the Pew Research Center, a non-profit, privately held fact tank, and Inari Agriculture, Inc, a privately held agricultural biotechnology company, and on the board of trustees and Executive Committee of Catholic Charities of New York. Mr. Rosiello received his B.A. in Economics from the University of North Carolina, where he was a Morehead Scholar and graduated Phi Beta Kappa, his M.Sc. in Economics from the London School of Economics, and his M.B.A. from Harvard Business School.

Hans E. Bishop has served as Chairman and a member of our Board since October 2018. Mr. Bishop has more than 30 years of experience in the biotechnology industry. Mr. Bishop is a founder and has served as President and co-chair of the board of directors of Altos Labs, Inc. (Altos Labs), a privately held biotechnology company, since January 2022. Prior to Altos Labs, Mr. Bishop served as the Chief Executive Officer of GRAIL, Inc., a healthcare company, from June 2019 to October 2021, following its acquisition by Illumina, Inc. (Illumina), a public biotechnology company. Mr. Bishop founded Juno Therapeutics, Inc. (Juno) in July 2013 and served as its President and Chief Executive Officer until its acquisition by Celgene Corporation (Celgene) in March 2018. Prior to Juno, Mr. Bishop served as Executive in Residence at Warburg Pincus, a multinational private equity firm. Earlier in his career, Mr. Bishop served as Executive Vice President and Chief Operating Officer of Dendreon Corporation (Dendreon), which was a public biopharmaceutical company during his tenure. Prior to Dendreon, Mr. Bishop served as President of Specialty Medicine at Bayer Healthcare, a multinational pharmaceutical and life sciences company, and before that served as Senior Vice President of Global Commercial Operations and Vice President and General Manager of European Biopharmaceuticals at Chiron Corporation, which was a public multinational biotechnology company during his tenure. Mr. Bishop previously served on the boards of directors of Agilent Technologies, Inc., a public instrumentation manufacturing company, Celgene, which was a public biopharmaceutical company during his service as a director, JW (Cayman) Therapeutics Co. Ltd (JW Therapeutics), a public cell therapy company in China, and Lyell Immunopharma, Inc. (Lyell Immunopharma), a public cellular therapy company. Mr. Bishop received his B.A. in Chemistry from Brunel University in London.

Michelle Seitz, CFA has served as a member of our Board since November 2020. Ms. Seitz founded MeydenVest Partners, a private investment and strategic advisory firm, and has served as its Chief Executive Officer since September 2022. Ms. Seitz served at Russell Investments, a privately held global investment solutions provider, as Chief Executive Officer from September 2017 to October 2022, and as Chairman of the Board from January 2018 to September 2022. Prior to Russell Investments, Ms. Seitz held various positions at William Blair, a global investment banking and wealth management firm, from February 1996 to August 2017, most recently serving as the Chief Executive Officer of William Blair Investment Management, Chair and President of William Blair Funds, and as a member of the board of directors from June 2001 to August 2017. Ms. Seitz currently serves on the boards of directors of MetLife, Inc., a public global provider of insurance, annuities, and employee benefit programs, MSCI, Inc., a public financial services company, and the Fred Hutchinson Cancer Center, and on the Dean's Council at the Indiana University Kelley School of Business. Ms. Seitz previously served as a director of the Financial Accounting Foundation, which provides oversight of Financial Accounting Standards Board (FASB) and Governmental Accounting Standards Board, and as Co-Chair of Challenge Seattle, an alliance of chief executive officers of multinational companies within the Seattle region. Ms. Seitz received her B.S. in Accounting from the Indiana University Kelley School of Business and her Chartered Financial Analyst designation

Alise S. Reicin, M.D. has served as a member of our Board since December 2020. Dr. Reicin has served as President and Chief Executive Officer of Tectonic Therapeutic, Inc. (Tectonic), a public biotechnology company, since August 2020. Prior to Tectonic, she served as President, Global Clinical Development at Celgene, which was a public biopharmaceutical company, from November 2018 to December 2019. Prior to Celgene, she served as Head of Global Clinical Development at EMD Serono Inc. (EMD Serono), a privately held pharmaceutical company, from May 2015 to October 2018. Prior to EMD Serono, Dr. Reicin served as Vice President, Program and Pipeline Leadership, Oncology at Merck. Prior to Merck, she was a faculty member at Columbia Medical School and a physician and researcher at Columbia Presbyterian Hospital. Dr. Reicin currently serves on the boards of directors of Immatics N.V., a public biopharmaceutical company based in Germany, and Tectonic. Dr. Reicin previously served on the board of directors of Homology Medicines, Inc., which was a public biopharmaceutical company during Dr. Reicin's service as a director. Dr. Reicin received her M.D. from Harvard Medical School and her B.A. in Biochemistry from Barnard College of Columbia University.

Joshua H. Bilenker, M.D. has served as a member of our Board since November 2020. Dr. Bilenker is a co-founder of Treeline Biosciences, Inc. (Treeline), a privately held biopharmaceutical company, and has served as its Chief Executive Officer since April 2021. Prior to Treeline, he served as Chief Executive Officer of Loxo Oncology at Lilly, a research and development group of Eli Lilly and Company (Eli Lilly), from December 2019 to January 2021, and served as founding Chief Executive Officer of Loxo Oncology, Inc. (Loxo), which was a public biopharmaceutical company, from June 2013 until its acquisition by Eli Lilly in February 2019. Dr. Bilenker joined Aisling Capital LLC in April 2006 and served there in various capacities, including as an Operating Partner from November 2013 to December 2019. Previously, Dr. Bilenker served as a medical officer in the Office of Oncology Drug Products at the United States Food and Drug Administration from August 2004 to April 2006. Dr. Bilenker previously served on the boards of directors of several public companies, including Gossamer Bio, Loxo, ViewRay, Inc., a public medical technology and device company, T2 Biosystems, Inc., a public medical diagnostics company, and Roka Bioscience, Inc., a molecular diagnostics company that was public during Dr. Bilenker's service as a director. Dr. Bilenker also formerly served on the board of directors of the National Comprehensive Cancer Network Foundation and BioEnterprise. Dr. Bilenker trained at the University of Pennsylvania in internal medicine and medical oncology and earned board certification in these specialties. Dr. Bilenker received his M.D. from the Johns Hopkins School of Medicine and his A.B. in English from Princeton University.

Patrick Y. Yang, Ph.D. has served as a member of our Board since October 2018. Dr. Yang is a co-founder of and advisor to Acepodia, Inc. (Acepodia), a public clinical-stage biotechnology company based in Taiwan, and the Chairman of Taiwan Bio-Manufacturing Corporation (TBMC), a privately held biopharmaceutical manufacturing company. Since 2013, Dr. Yang has served as a biotechnology and biopharmaceutical industry consultant. From June 2020 to June 2025, Dr. Yang served as co-founder and Vice Chairman of National Resilience, Inc. (National Resilience), a privately held biomanufacturing technology company. Prior to National Resilience, Dr. Yang served as Executive Vice President at Juno from September 2017 to January 2019. From January 2010 to March 2013, Dr. Yang served as Executive Vice President and Global Head of Technical Operations at F. Hoffmann-La Roche Ltd. (Roche), a healthcare company, where he was responsible for the company's pharmaceutical process development, engineering, quality, technical regulatory, supply chain, and manufacturing plants. Before joining Roche, Dr. Yang served in roles of increasing responsibility at each of Genentech, Inc., a biotechnology company, Merck & Co., Inc. (Merck), a public pharmaceutical company, General Electric Company, a public industrial company, and Life Systems, Inc., a life science research and development company, during which time he developed significant experience with pharmaceuticals and biotechnology manufacturing, engineering, technology, and supply chain management. Dr. Yang currently serves on the board of directors of TBMC. Dr. Yang previously served on the boards of directors of Acepodia, Amyris, Inc., a public biotechnology company, Andeavor, Inc. (formerly Tesoro Corporation), a public independent petroleum refining and marketing company, Codexis, Inc., a public biotechnology company, PharmaEssentia Corp., a public biopharmaceutical company based in Taiwan, and Polaris Group, a public biotechnology company based in Taiwan. Dr. Yang received his Ph.D. in Engineering from The Ohio State University, his M.Sc. in Electrical Engineering from the University of Cincinnati, and his B.S. in Engineering from the National Chiaotung University in Taiwan.

Robert Nelsen has served as a member of our Board since October 2018. Mr. Nelsen is a co-founder and has served as Managing Director of ARCH Venture Partners, a venture capital firm focused on early-stage technology companies, since 1994, and has played a significant role in the early sourcing, financing, and development of more than 150 biopharmaceutical companies. Mr. Nelsen currently serves on the boards of directors of Hua Medicine, a public biotechnology company, where he serves as Chairman, and Prime Medicine, Inc., a public biotechnology company. Mr. Nelsen previously served on the boards of directors of several public biotechnology and biopharmaceutical companies, including Adolor Corporation, Agios Pharmaceuticals, Inc., Beam Therapeutics Inc. (Beam), Bellerophon Therapeutics, Inc., Brii Biosciences Limited, Denali Therapeutics, Inc., Fate Therapeutics, Inc., Gossamer Bio, Inc. (Gossamer Bio), Illumina, Juno, Karuna Therapeutics, Inc., KYTHERA Biopharmaceuticals, Inc., Lyell Immunopharma, NeurogesX, Inc., Revolution Healthcare Acquisition Corp., Sage Therapeutics, Inc., Sienna Biopharmaceuticals, Inc., Syros Pharmaceuticals, Inc., Unity Biotechnology, Inc., and Vir Biotechnology, Inc. He also previously served as a Trustee of the Fred Hutchinson Cancer Center and the Institute for Systems Biology, and as a director of the National Venture Capital Association. Mr. Nelsen received his M.B.A. from the University of Chicago Booth School of Business and his B.S. in Economics and Biology from the University of Puget Sound.

Richard Mulligan, Ph.D. has served as a member of our Board since November 2018 and as Vice-Chairman of our Board since April 2020. Dr. Mulligan served as a consultant to Sana from November 2018 until joining Sana as an employee in April 2020, where he served in various roles, most recently as Head of Sana Innovation Research, until March 2024. Dr. Mulligan is currently the Mallinckrodt Professor of Genetics, Emeritus, at Harvard Medical School (Harvard), and served as Visiting Scientist at the Koch Institute for Integrative Cancer Research at the Massachusetts Institute of Technology (MIT) from March 2017 to February 2021. From March 2017 to October 2018, Dr. Mulligan served as Portfolio Manager at Icahn Capital LP, an investment management firm, and from May 2013 to December 2016, he served as Founding Partner and Senior Managing Director of Sarissa Capital Management LP, a registered investment advisor. From 1996 to 2013, Dr. Mulligan served as the Mallinckrodt Professor of Genetics at Harvard and Director of the Harvard Gene Therapy Initiative. Prior to that, he served as Professor of Molecular Biology at MIT and a member of the Whitehead Institute for Biomedical Research. Dr. Mulligan currently serves on the boards of directors of Bausch Health Companies Inc., a public pharmaceutical company, and International Flavors and Fragrances Inc., a public specialty chemicals company. Dr. Mulligan previously served on the board of directors of Biogen Inc., a public biotechnology company. Dr. Mulligan's honors include the MacArthur Foundation Genius Prize, the Rhodes Memorial Award of the American Association for Cancer Research, the ASMB-Amgen Award, and the Nagai Foundation International Prize. Dr. Mulligan received his Ph.D. in Biochemistry from the Stanford University School of Medicine and his B.S. from MIT.

Dhavalkumar Patel, M.D., Ph.D. has served as our Executive Vice President, Chief Scientific Officer since August 2024 and, effective in March 2026, our Board designated Dr. Patel as an executive officer for purposes of Rule 3b-7 of the Exchange Act and as an officer as defined in Section 16 of the Exchange Act (Section 16 Officer). Prior to Sana, he served as Executive Vice President and Chief Scientific Officer of UCB SA/NV (UCB), a public multinational biopharmaceutical company, from October 2017 to June 2024. Prior to UCB, he spent 10 years at Novartis AG (Novartis), most recently as the Head of Research of the Novartis Institutes for BioMedical Research (NIBR) Europe. He was also an Entrepreneur in Residence at the Novartis Venture Fund. Prior to Novartis, Dr. Patel was an Eminent Professor of Medicine, Chief of Rheumatology, Allergy and Clinical Immunology, and Director of the Thurston Arthritis Research Center at the University of North Carolina at Chapel Hill. He also spent nine years at the Duke University School of Medicine, culminating in his position as the Chief of the Division of Allergy and Immunology. Dr. Patel received his Ph.D. in Microbiology and Immunology, his M.D., and his B.S. in Zoology/Animal Biology from Duke University, and is board certified in internal medicine, rheumatology, and allergy and immunology.

Susan Wyrick is Senior Vice President, Finance and Accounting at Sana Biotechnology. Prior to Sana, Susan served as Vice President, Controller at Juno Therapeutics, where she led the global accounting organization. During her time at Juno, she was a key contributor to the company's successful IPO, which raised over $300M. Prior to Juno, Susan held several senior leadership roles in finance and accounting at various publicly traded life science companies. Susan holds a BA in accounting from the University of Washington.

On February 17, 2026, the Company announced that Brian Piper, M.B.A., joined the Company as Executive Vice President, Chief Financial Officer on February 17, 2026 and in such capacity, will serve as the Company's Treasurer and Principal Financial Officer. Prior to joining the Company, Mr. Piper served as Chief Financial Officer of Scorpion Therapeutics, Inc. (Scorpion), a privately held biopharmaceutical company, from November 2021 to April 2025, and thereafter at Antares Therapeutics, Inc., a privately held biopharmaceutical company, until August 2025, following its spin-off from Scorpion. Prior to Scorpion, Mr. Piper served as Chief Financial Officer of Prelude Therapeutics Incorporated (Prelude), a biopharmaceutical company that completed its initial public offering during his tenure, from July 2019 to November 2021. Prior to Prelude, Mr. Piper served in roles of increasing responsibility, most recently as Chief Financial Officer and Corporate Secretary, at Aevi Genomic Medicine, Inc. (Aevi) (previously Medgenics, Inc.), a public biopharmaceutical company (later acquired by Cerecor, Inc.), from April 2014 to May 2019. Prior to Aevi, Mr. Piper served in finance, investor relations, and business development roles at Shire Pharmaceuticals plc, which was a public pharmaceutical company during his tenure (later acquired by Takeda Pharmaceutical Company Limited), for 12 years. Mr. Piper received his B.B.A. in Finance from the University of Notre Dame and his M.B.A. from the Robert H. Smith School of Business at the University of Maryland.