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Bristol Myers Squibb Names New EVP, Chief Medical Officer and Head of Development

Dr. Cristian Massacesi will oversee the company’s early-stage and late-stage product development across all therapeutic areas.

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By: Charlie Sternberg

Associate Editor

Bristol Myers Squibb has appointed Cristian Massacesi, M.D., as Executive Vice President, Chief Medical Officer, and Head of Development, effective August 1, 2025. In this role, Massacesi will oversee the company’s early-stage and late-stage product development across all therapeutic areas. Samit Hirawat, M.D., Bristol Myers Squibb’s Executive Vice President, Chief Medical Officer, and Head of Development for the past six years, is stepping down to pursue new professional opportunities. Hiraw...

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