Investing Profile

Sam Altman

AngelInvestorFounder

Co-founder and CEO of OpenAI

blog.samaltman.comSan Francisco, California

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Networks Sam is a member of

Y Combinator Network

37 CONNECTIONS

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Current Investing Position

Angel

Investment Range

$100K - $5.0M

Sweet Spot

$1.5M

Investments On Record

165

Sam Altman is on these Sector & Stage Rankings

Games (Seed)Insurance (Seed)TransportationTech (Seed)EnergyTech (Seed)Web3/Blockchain (Seed)AI (Seed)Investors who invested in female founders Web3/Crypto (Seed)San Francisco Bay Area Angel, Scout, and Solo-Capitalists Generative Tech/AI (Seed)SaaS (Seed)

Sam Altman's Investments On Record (123)

Company	StageDateRound Size	Total Raised
Coco	Series BJun 2025$80M Series AAug 2021$36M	$120M
Co-investors: Jeff Kearl (Pelion Venture Partners), Paige Craig (Outlander Labs), Max Altman (Saga), Kevin Mahaffey (SNR), Dick Boyce (TPG), Sam Nazarian, Tom Steyer, Abe Burns
Exowatt	Series AApr 2025$35M SeedApr 2024$20M	$55M
Co-investors: Viviana Faga (Felicis Ventures), Katherine Boyle (Andreessen Horowitz), Aydin Senkut (Felicis Ventures), Jack Abraham (Atomic), Leonardo DiCaprio
Rescale	Series DApr 2025$120M Series CNov 2021$55M Series BJul 2018$32M Series UnknownJul 2015$6M SeedJan 2012	$270M
Co-investors: Nagraj Kashyap (Softbank Group), Ronald Conway Sr. (SV Angel), Ullas Naik (Streamlined Ventures), Peter Thiel (Founders Fund), Chris Dixon (Andreessen Horowitz), Lorenzo Thione (Gaingels), Ron Conway (SV Angel), Wei Guo (UpHonest Capital), Wolfgang Seibold (Hitachi Ventures), Garry Tan (Y Combinator), Dr. E. Bora Uygun (Bora&Sons), Raj Sandhu (Great Oaks Venture Capital), Peter Bordes (Trajectory Ventures), Shankar Chandran (Walden Catalyst Ventures), Richard Branson, Jeff Bezos, Paul Graham
Campus	Series BMar 2025$46M Series AMay 2023$29M	$100M
Co-investors: Joe Lonsdale (8VC), Trae Stephens (Founders Fund), Rob Hayes (First Round Capital), Ben Braverman (Saga), Thomson Nguyen (Saga), Max Altman (Saga), Lachy Groom (LGF), Elizabeth Weil (Scribble Ventures), Akshay Kothari, Jason Citron, Emil Michael, Dylan Field, Ron Pragides
Helion Energy	Series FJan 2025$430M Series ENov 2021$500M Series DSep 2020$40M SeedAug 2014$1M	$970M
Co-investors: Ravi Mhatre (Lightspeed Venture Partners), Dustin Moskovitz
Boom Supersonic	Series ADec 2024$100M Series BApr 2019$100M Series AMar 2017$33M SeedMar 2016$6M	$330M
Co-investors: Reid Hoffman (Greylock), Avichal Garg (Electric Capital), Josh Buckley (Buckley Ventures), Wei Guo (UpHonest Capital), Max Altman (Saga), Luigi Bajetti (LombardStreet Ventures), Zia Huque (Prime Movers Lab), Matthew Bellamy (Helium-3 Ventures), Eric Lefkofsky (Lightbank), Harshul Sanghi (American Express Ventures), Michael Marks (Celesta), Alexander Piskunov (KAAN Ventures), Jude Gomila (Jude Gomila Rolling Fund), Matt Bellamy, Sahin Boydas, Paul Graham, Alexander Gerko, Michael Moritz, Mattia Astori, Louis Beryl
GALY	Series BSep 2024$33M	$34M
Co-investors: Carmichael Roberts (Breakthrough Energy Ventures), Tim Draper (Draper Associates), Jamie Goldstein (Pillar VC)
Beacon AI	Series AAug 2024$15M SeedOct 2021$5M	$20M
Co-investors: Jackson Moses (Afore Capital), Jim Lockheed (JetBlue Technology Ventures), Greg Sands (Costanoa Ventures), Bradley C. Harrison (Scout Ventures), Zach Perret (Mischief Venture Capital), Lauren Farleigh (Mischief Venture Capital), Jai Malik (Countdown Capital)