An angel investor and operator angel based in San Francisco, California, United States, Sam Altman has 9 known investments: Boom Supersonic, Coco, Exowatt, Campus, Helion Energy, Arcadia Medicine, Preventive, NOYACK and Red Queen Bio.
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Investment focus
Contacts
Sam Altman portfolio companies (9)
- Boom Supersonic
- Coco
- Exowatt
- Campus
- Helion Energy
- Arcadia Medicine
- Preventive
- NOYACK
- Red Queen Bio
Affiliated funds' portfolios
CEO at OpenAI, whose known portfolio counts 9 companies
- Figure
- Harvey
- Chai Discovery
- Anysphere
- Physical Intelligence
- Vengo AI
- The Stargate Project
- AIGT
- Co Guard
Investor Profile
Founders in the listed sectors AI, Climate, Hardware and Healthcare, and focus areas Aerospace, Biotech, Clean Energy and Digital Health will recognize the pattern in this portfolio.
Sam Altman appears in Growth, Seed and Series A rounds across the known deals.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
Colleagues at OpenAI
Showing 20 of 36
David Yakobovitch
Investor
New York, United States
Fidji Simo
CEO, AGI Deployment
Palo Alto, United States
Bret Taylor
Investor
San Francisco, United States
Alexandre Berriche
Late Stage Investor
Paris, France
Boris Revsin
Investor
Boston, United States
James Zhong
Investor
Melbourne, Australia
Nate Gross
Health
San Francisco, United States
Tanooj Luthra
Investor
San Francisco, United States
Kristen Clifford
Corporate Development
San Francisco, United States
Jason Brenier
Investor
San Francisco, United States
Mahmoud Abdelsalam
Engineering Leadership
Seattle, United States
Susan Wang
Strategic Finance
San Francisco, United States
Ngan Nguyen
Managing Partner
United States
Ai Ha
Investor
San Francisco, United States
Nikola P.
Investor
Serbia
Angela Jimenez MD Mps
Investor
San Francisco, United States
Hari Srikanth
Investor
San Francisco, United States
Geoff Lewis
Investor
Los Angeles, United States
Colin M Evans
Venture Partner
San Francisco, United States
Chandra Shekar
Private Investor
United States
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Frequently asked questions
Who is Sam Altman?
Sam Altman is an angel investor and operator angel based in San Francisco, California, United States with 9 known investments on file, among them Boom Supersonic, Coco and Exowatt. The sections above list the sectors, stages and firms attached to that record.
What does Sam Altman invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include Aerospace, Biotech, Clean Energy and Digital Health. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Sam Altman invest at?
The known deals of Sam Altman include Growth, Seed and Series A rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Sam Altman listed at?
Sam Altman is listed as CEO at OpenAI. 36 other people in the database share a firm with Sam Altman.
How do I contact Sam Altman?
A LinkedIn page is on file for Sam Altman. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal