James Coffin is the founder of Sema4. Sema4 has raised $621M in total funding. Latest round: IPO. Backed by Casdin Capital, Corvex Management.
James Coffin is a genomics executive who served as President and Chief Operating Officer of Sema4 Holdings Corp. He later took leadership roles at GeneDx and Velsera, and public sources indicate he will be President and CEO of Velsera effective January 2026. His background is in life sciences and genomics operations.
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