Investing Profile

Sam Altman

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

Signal uses Gmail to reveal intro paths. Email content is never read.

Sign in with Google →
Y Combinator Network
37 CONNECTIONS
cb
Angel
$100K - $5.0M
$1.5M
158
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: Avichal Garg (Electric Capital), Josh Buckley (Buckley Ventures), Reid Hoffman (Greylock), Wei Guo (UpHonest Capital), Michael Marks (Celesta), Zia Huque (Prime Movers Lab), Harshul Sanghi (American Express Ventures), Matthew Bellamy (Helium-3 Ventures), Alexander Piskunov (KAAN Ventures), Luigi Bajetti (LombardStreet Ventures), Max Altman (Saga), Jude Gomila (Jude Gomila Rolling Fund), Eric Lefkofsky (Lightbank), Louis Beryl, Mattia Astori, Matt Bellamy, Michael Moritz, Alexander Gerko, Sahin Boydas, Paul Graham
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), Greg Sands (Costanoa Ventures), Bradley C. Harrison (Scout Ventures), Jim Lockheed (JetBlue Technology Ventures), Lauren Farleigh (Mischief Venture Capital), Zach Perret (Mischief Venture Capital)
Slope
Series UnknownJul 2024$15M
Series ASep 2023$30M
$77M
Co-investors: Marcelo Lima (monashees), John Buttrick (Union Square Ventures), Darian Shirazi (Gradient Ventures), Rebecca Kaden (Union Square Ventures), Donald Stalter (Global Founders Capital), David Helgason (foobar.vc), Max Altman (Saga), Jared Friedman (Y Combinator), Brad Flora (Y Combinator), Alex Bouaziz (Sarona Ventures), Surbhi Sarna (Y Combinator), Jack Altman (Alt Capital), Drew Houston, Mathilde Collin, Arash Ferdowsi, Stanley Tang, Tim Griffin, Eric Wu, William Hockey
ValueBase
SeedJun 2024$6M
Pre SeedFeb 2023$2M
$8M
Co-investors: Erik Torenberg (Village Global), Julian Weisser (Kepler Operator’s Fund), Nat Friedman (C2 Investment), Sahil Lavingia
APEX
SeedMay 2024$7M
$7M
Co-investors: Shardul Shah (Index Ventures), Bogomil Balkansky (Sequoia Capital), Min Teo (Ethereal Ventures)
Airchat
UndisclosedApr 2024
President Y Combinator2016 - 2019