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Michael Grissinger has served as a member of our board of directors since May 2022 and previously served on the board of directors of Atrin

Pharmaceuticals Inc. at the time of its acquisition by Aprea. Mr. Grissinger brings to Atrin extensive experiernce in business and corporate development,

finance, marketing and strategic planning in the pharmaceutical industry. He spent 22 years at Johnson & Johnson, holding positions of Vice President and Head, Worldwide Pharmaceutical Licensing as well as Vice President and Head of Worldwide Pharmaceutical Corporate Development and M&A. He has led transactions and teams across a broad span of deal types, geographies, and therapeutic areas. Prior to joining Johnson & Johnson, Mr. Grissinger spent 20 years in the healthcare industry with Ciba-Geigy and Smith Kline Beckman. Mr. Grissinger holds a B.S. in Chemistry from Juniata College and an M.B.A. from Temple University-Fox School of Business.