Overview
Jack Altman joined Benchmark as a General Partner in February 2026. He co-founded the HR-software company Lattice and previously ran his own AI-focused fund, Alt Capital (roughly $275M second fund), bringing that team and existing board seats to Benchmark. He is the brother of OpenAI CEO Sam Altman.
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Jack Altman joined Benchmark as a General Partner in February 2026. He co-founded the HR-software company Lattice and previously ran his own AI-focused fund, Alt Capital (roughly $275M second fund), bringing that team and existing board seats to Benchmark. He is the brother of OpenAI CEO Sam Altman.