# Jack Altman

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.

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.

Canonical: https://uniquebase.ai/people/jack-altman
Stable identifier: UB-P4250
Snapshot captured: 2026-10-22T00:48:04.883Z
English updated: 2026-10-22T00:59:15.669Z

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