Investing Profile

Ian Hathaway

AdvisorVCInvestor
Partner at OpenAI
openai.comSan Francisco, California
Photo of Ian Hathaway, Partner at OpenAI

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OpenAI Network
74 CONNECTIONS
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OpenAI Partner
$100K - $5.0M
$1.5M
14
CompanyStageDateRound SizeTotal Raised
Adaptive Security
Series BDec 2025$81M
Series AApr 2025$55M
$140M
Co-investors: Zane Lackey (Andreessen Horowitz), Enrique Salem (Bain Capital Ventures)
Harvey
Series EOct 2025$59M
Series EJun 2025$300M
Series DFeb 2025$300M
Series CJul 2024$100M
Series BDec 2023$80M
SeedNov 2022$5M
$1.8B
Co-investors: Anas Biad (Sequoia Capital), Patrick Grady (Sequoia Capital), Sangeen Zeb (GV (Google Ventures)), Elad Gil (Think Colorado), Saurabh Gupta (DST Global), Kris Fredrickson (Verified Capital), Ilya Fushman (Kleiner Perkins), Brian Halligan (Longworth Ventures)
Endex
Series UnknownAug 2025$14M
$14M
Ambience Healthcare
Series CJul 2025$240M
Series BFeb 2024$70M
$320M
Co-investors: Julie Yoo (Andreessen Horowitz), Immad Akhund (Y Combinator), Mamoon Hamid (Kleiner Perkins), Vignesh Chandramouli (Oak HC/FT)
Speak
Series CDec 2024$78M
Series BNov 2022$27M
$150M
Co-investors: Josh Buckley (Buckley Ventures), Sven Strohband (Khosla Ventures), Jeff Weiner (Next Play Ventures), Arash Ferdowsi (Dropbox), Lachy Groom (Physical Intelligence), Justin Mateen (Unknown Ventures), Ben Quazzo (Accel-KKR), Gokul Rajaram (gokulrajaram.com), Paul Graham, Drew Houston
Anysphere (Cursor)
SeedJul 2023$8M
$2.4B
Co-investors: Joshua Kushner (Thrive Capital), Martin Casado (Andreessen Horowitz), Marco Mascorro (Andreessen Horowitz), Matt Bornstein (Andreessen Horowitz), Patrick Collison (Archipelagos, Institute of Marine Conservation), Arash Ferdowsi (Dropbox), Nat Friedman (Self-employed), Michael Fertik (Heroic Ventures)
Partner OpenAIPresent
Investor Haystack2017 - 2021
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