Investing Profile

Sam Altman

AngelInvestorFounder
Co-founder and CEO of OpenAI
blog.samaltman.comSan Francisco, California
Photo of Sam Altman, Angel
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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
158

Sam Altman is on these Sector & Stage Rankings

Sam Altman's Investments On Record (122)

CompanyStageDateRound SizeTotal Raised
Helion Energy
Series FJan 2025$430M
Series ENov 2021$500M
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: Josh Buckley (Buckley Ventures), Reid Hoffman (Greylock), Avichal Garg (Electric Capital), Wei Guo (UpHonest Capital), Michael Marks (Celesta), Zia Huque (Prime Movers Lab), Harshul Sanghi (American Express Ventures), Alexander Piskunov (KAAN Ventures), Luigi Bajetti (LombardStreet Ventures), Max Altman (Saga), Eric Lefkofsky (Lightbank), Jude Gomila (Jude Gomila Rolling Fund), Matthew Bellamy (Helium-3 Ventures), Mattia Astori, Matt Bellamy, Louis Beryl, Paul Graham, Michael Moritz, Alexander Gerko, Sahin Boydas
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), Jai Malik (Countdown Capital), Bradley C. Harrison (Scout Ventures), Lauren Farleigh (Mischief Venture Capital), Zach Perret (Mischief Venture Capital), Greg Sands (Costanoa Ventures), Jim Lockheed (JetBlue Technology Ventures)
Slope
Series UnknownJul 2024$15M
Series ASep 2023$30M
$77M
Co-investors: John Buttrick (Union Square Ventures), Darian Shirazi (Gradient Ventures), Marcelo Lima (monashees), Rebecca Kaden (Union Square Ventures), Donald Stalter (Global Founders Capital), Alex Bouaziz (Sarona Ventures), David Helgason (foobar.vc), Max Altman (Saga), Jared Friedman (Y Combinator), Surbhi Sarna (Y Combinator), Jack Altman (Alt Capital), Brad Flora (Y Combinator), Arash Ferdowsi, Mathilde Collin, William Hockey, Drew Houston, Eric Wu, Tim Griffin, Stanley Tang
ValueBase
SeedJun 2024$6M
Pre SeedFeb 2023$2M
$8M
Co-investors: Nat Friedman (C2 Investment), Erik Torenberg (Village Global), Julian Weisser (Kepler Operator’s Fund), Sahil Lavingia
APEX
SeedMay 2024$7M
$7M
Co-investors: Bogomil Balkansky (Sequoia Capital), Shardul Shah (Index Ventures), Min Teo (Ethereal Ventures)
Airchat
UndisclosedApr 2024

Sam Altman's Experience

President Y Combinator2016 - 2019