Stephen Berenson

Managing Partner
Flagship Pioneering

Stephen Berenson is a managing partner at Flagship Pioneering and a member of the company's Resource Allocation and Management Committees. He is also responsible for Flagship's Capital Formation and Business Development functions. Stephen is chairman of the boards of Flagship-founded companies Cellarity and Seres Therapeutics (NASDAQ: MCRB) and is on the board of directors at Moderna (NASDAQ: MRNA) and Inari.

Stephen joined Flagship in June of 2017 after a 33-year career as an investment banker at J.P. Morgan. During that time, he worked across all major geographies, product areas and industry groups, and helped build the bank’s M&A, equities and technology investment banking businesses. During his last twelve years at J.P. Morgan, Stephen was vice chairman of investment banking and focused on providing high-touch strategic advice and complex transaction execution to leading companies across all industries globally. He was co-founder of J.P Morgan’s Global Strategic Advisory Council and co-founder of the firm’s Board Initiative. During Stephen’s leadership of the Board Initiative, more than 1,000 independent directors of public companies attended at least one of J.P. Morgan’s board events to discuss, debate and share best practices on the key issues they faced in the fulfillment of their duties.

Stephen graduated from MIT in 1982 with an S.B. in mathematics. He is a member of the Visiting Committee for MIT’s Department of Mathematics. He previously served on the board of trustees of Jacob’s Pillow and the Mahaiwe Performing Arts Center. He also previously served on the boards of directors of Flagship-founded companies CiBO Technologies and Repertoire Immune Medicines.


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