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Jack Altman raised a new $275M early-stage fund in a mere week

From TechCrunch

By Julie Bort

September 16, 2025

Jack Altman raised a new $275M early-stage fund in a mere week

Jack Altman raised a new $275M early-stage fund in a mere week

The Altman brothers sure have a knack for being venture capitalists. On Tuesday, this especially applied to Jack Altman, co-founder of $3 billion-valuation HR software startup Lattice and brother to OpenAI CEO Sam Altman.

Jack Altman just announced a second $275 million fund for his solo-run firm Alt Capital. And from start to finish, it took him a week, he told The Wall Street Journal.

His first fund, raised in early 2024, was $150 million, so this is a big step up. He used it to invest in about 20 early-stage companies, he said, including David AI (a YC-alum that does data sets for speech models) and unicorn restaurant software maker Owner.com.

Jack is, clearly, well-connected and has founder experience, although he left the CEO role at Lattice in 2024 (he remains chairman). Of course, Sam was famously president of Y Combinator and is still an active angel investor (but not an LP in this new fund, the WSJ reports). Meanwhile, brother Max Altman is a co-founder of Saga Ventures, which raised a $125 million fund of its own in 2024. 

View original article on techcrunch.com

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