Sam Altman

American entrepreneur and investor known for his work in the technology sector, including co-founding OpenAI.

Angel Investor Active San Francisco, United States Est. 1985
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Last updated 2026-07-20
Portfolio
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Rounds participated
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Rounds led
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About

Sam Altman is an American entrepreneur, investor, and programmer. He is best known as the CEO of OpenAI, an AI research and deployment company behind ChatGPT. He was previously the president of Y Combinator, a startup accelerator. Altman is also an active angel investor in various technology startups and nuclear energy companies.

Portfolio

No portfolio companies in this dataset yet.

Investment activity

1 portfolio exit on record.

Portfolio by sector

Cyber Security1

Q&A

What is Sam Altman's primary investment focus?
Sam Altman's investment activity, based on available data, shows a focus on the Cyber Security sector, with one portfolio company in this area.
Has Sam Altman had any notable exits recently?
Yes, Sam Altman had an exit in May 2025 with Apex Security, which was acquired by Tenable for $105M. Apex Security operates in the Cyber Security sector.
Can you name a key company in Sam Altman's portfolio?
A key company in Sam Altman's portfolio is Apex Security, which focuses on real-time detection, investigation, and response to cyberattacks targeting AI platforms.
What is the most recent investment activity for Sam Altman?
Sam Altman's most recent recorded investment activity was in May 2024, with one investment round completed during that month.
What kind of investor is Sam Altman?
Sam Altman is identified as an angel investor and is also the CEO of OpenAI.
What was the funding stage for Apex Security when Sam Altman invested?
Sam Altman participated in a Seed stage round for Apex Security.
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