Sam Altman
Individual
San Francisco, United States · 40+ investments · 33 portfolio companies
Pre-Seed
Early Stage
Seed
Growth
Artificial Intelligence
Education
Healthcare
Biotech
Energy
Infrastructure
enterprise software
internet hardware
Climate Tech
Fintech
- Headquarters
- San Francisco, United States
- Website
- blog.samaltman.com
- Portfolio Companies
- 33
- Total Investments
- 40
- Last Investment
- May 2026
- Geographic Focus
- United States
Investment Thesis
Investing in AI, biotechnology, energy, and transformative technologies that will define the future, with concentration in companies solving the world's most important problems.
Sam Altman is an Individual based in San Francisco, United States. It has made 40 investments in Artificial Intelligence and Education, including Retro Biosciences, Boom Supersonic and Theorem.
Portfolio33
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Airlift
Co-investors24
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24 co-investors across 79 shared portfolio companies — who they back alongside, and how often they lead.
Venture Capital ×14 · Angel Investor ×6 · Corporate VC ×2 · 61 shared rounds
Investment History
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