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Greg Brockman

InvestorUnicorn founder

Founder at OpenAI · Founding Engineer, then first CTO at Stripe

San Francisco, CA

Writes $100K – $5M checks · typically $1.5M

FoundedOpenAI$852B

30 Under 30 2018 · Enterprise Technology

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About

Greg Brockman co-founded OpenAI in 2015 and, as its President, is worth an estimated $25.5 billion on the company's $852 billion March 2026 valuation. A math-olympiad kid from Thompson, North Dakota (pop. ~1,000) who won silver at the 2006 International Chemistry Olympiad, he left Harvard, then MIT, to become one of Stripe's first engineers — its first CTO, scaling engineering from 5 to 205 people. At OpenAI he was CTO, then President, personally live-demoing GPT-4 on launch day; when the board fired Sam Altman in November 2023, Brockman quit within hours and returned with him five days later.

Likely emails· guessed from name + firm domain, not firm-published

Beyond investing

Founded
Brockman co-founded OpenAI in December 2015 alongside Sam Altman, Ilya Sutskever and others, initially operating from his living room. Left MIT in 2010 to become one of Stripe's first engineers, then its first CTO, scaling the team from 5 to 205.
Education
Studied at Harvard University Studied at Massachusetts Institute of Technology Studied at Red River High School Studied at University of North Dakota Attended Canada/USA Mathcamp three times (2003, 2005, 2007) — a math-camp kid before a startup kid.
Charities
Brockman made a $5.5 million donation to the nonprofit Friends of Big Bear Valley to help save a wildlife habitat for the eagles Jackie and Shadow.
Communities
Brockman helped found Leading the Future, a super PAC focused on AI deregulation, with Andreessen Horowitz co-founders Marc Andreessen and Ben Horowitz. Grew up in Thompson, North Dakota, population about a thousand. With his wife donated $5.5M to Friends of Big Bear Valley, the bald-eagle nest-cam nonprofit.
Awards
Brockman won a silver medal in the 2006 International Chemistry Olympiad. Brockman was the first finalist from North Dakota to participate in the Intel Science Talent Search since 1973.
Hobbies
As a high schooler Brockman attended Canada/USA Mathcamp in 2003, 2005, and 2007.
Family
Brockman married Anna Brockman in November 2019 at OpenAI's offices, with Ilya Sutskever officiating the wedding. Brockman was born in Thompson, North Dakota, to Ron Brockman and Ellen Feldman. Married Anna at the OpenAI office in November 2019, with co-founder Ilya Sutskever officiating.
More
Personally live-demoed GPT-4 in OpenAI's launch-day developer livestream on March 14, 2023.

Mentioned above: the Massachusetts Institute of Technology mafia → · the Stripe mafia →

From Greg's own website — common ground for a warm intro.

Founder at OpenAI

Intro paths

→

In turn, Greg can intro founders to OpenAI's investors below.

OpenAI's investors · 105

7BC Venture CapitalSan FranciscoA-Rod CorpMiamiA.Capital VenturesSan FranciscoA'Z AngelsLos GatosAdvent InternationalBoston · $1.1B checksAliya Capital PartnersMiamiAlpha FundsOdessaAlpha Wave GlobalMiamiAltimeter CapitalMenlo Park · $1M – $25M checks · since 2026Andreessen HorowitzMenlo Park · $500K – $50M checks · since 2026AntiSan Juan · $250K – $30M checksB Capital GroupSan Francisco · $10M – $50M checksBanca Investis — Family OfficeMilanBedrockLos Angeles · $5M – $30M checksBlackstonesince 2026boldstart venturesMiami · $1M – $3M checksBond Capital ManagementSan Francisco · $100K – $25M checksBright Pixel CapitalMaiaCats.vcVilnius · $200K – $500K checksCoatue ManagementNew York · $1M – $20M checks · since 2025Cosmic Venture PartnersAustin · $100K – $5M checksDragoneer Investment GroupSan Francisco · $100K – $5M checks · since 2025East Sunshine VenturesSilicon ValleyEastlink Capital PartnersMenlo Park · $100K – $5M checksElad GilSan Francisco · $100K – $10M checksEmerson Collective InvestingPalo Alto · $100K – $1M checksEverybody Ventures$100K checksExpedite VenturesBerlin · since 2024Felicis VenturesSan Francisco · $500K – $15M checksFirebolt Ventures Management Company, LlcPalo AltoFirestreak VenturesFounders FundSan Francisco · $500K – $5M checksFrontier VenturesCupertino · $100K – $5M checksGaldana VenturesBarcelonaGestio CapitalLondonGlynn Capital ManagementMenlo ParkGreylock PartnersSan Francisco · $100K – $10M checksGroveStreetNewtonHOF CapitalNew York · $500K – $10M checksICONIQSan FranciscoIneffable VenturesStamfordInsight PartnersNew York · $120M – $350M checks · since 2026K3 VenturesSingaporeK3V VenturesSingaporeKaleida CapitalSan DiegoKhosla VenturesMenlo Park · $100K – $20M checksKoru CapitalLakeside CapitalTampa · $100K – $250K checks · since 2024M12 (Microsoft's Venture Fund)Seattle · $100K – $10M checks · since 2019Madrona Venture GroupSeattle · $2M – $10M checksMarketX VenturesMastrySan FranciscoMaverick VenturesSan Francisco · $3M – $10M checksMech VenturesLas VegasMGXAbu Dhabi · since 2025Midlothian Angel NetworkMidlothianNearingpoint Venture Partners Inc.TorontoNext Legacy PartnersPortola ValleyNVIDIASanta Clara · since 2024Optic Capital$100K – $1M checksOptimist VenturesNew YorkOssian CapitalMiamiPegasus Tech VenturesSan JosePeter Thielsince 2015Redpoint VenturesWoodside · $100K – $10M checksRiverbend CapitalWashingtonRosecliff VenturesNew York City · $500K checksSam Altmansince 2015Sanctor CapitalNew YorkSequoia CapitalMenlo Park · $100K – $50M checks · since 2026SGH CapitalParisSoftBank GroupTokyo · since 2025SoftBank Vision FundLondonSoma CapitalSacramento · $100K – $300K checksSound VenturesSanta Monica · since 2026SparkLabs KoreaPalo AltoSpeedinvestVienna · $5M – $30M checksSquareOne CapitalMiamiStack CapitalTorontoStandard CapitalSan FranciscoStripesNew YorkSV AngelSan Francisco · $150K – $20M checksT. Rowe PriceBaltimore · since 2025TemasekSingapore · since 2026ThirdbaseNew YorkThomas JamesThrive CapitalNew York · $500K – $25M checks · since 2025Tiger Global ManagementNew York · $1M – $100M checks · since 2024Top Shelf Equity Funds CTouring CapitalSan FranciscoTPGSan Francisco · since 2026Type One VenturesLos Angeles · $100K – $5M checksUncorrelated VenturesLas VegasValkyrieSunnyvaleValkyrie Ventures Management, LlcPark CityVaranium Capital AdvisorsMumbaiVU Venture PartnersSan Francisco · $200K – $1M checksWAGMI VenturesWashington Harbour PartnersArlingtonWealthUnion$10K checksWinslow CapitalMinneapolis · since 2026Wisdom VenturesLos GatosXYZ Venture CapitalSan Francisco · $10K – $5M checksY CombinatorSan Francisco · $500K checksZ-FellowsNew York · $10K checks

Co-founders at OpenAI

SASam Altman
Sam AltmanFounder
EMElon Musk
Elon MuskFounder
ISIlya Sutskever
Ilya SutskeverFounder
WZWojciech Zaremba
Wojciech ZarembaFounder
JSJohn Schulman
John SchulmanFounder
AKAndrej Karpathy
Andrej KarpathyFounder
TBTrevor Blackwell
Trevor BlackwellFounder
VCVicki Cheung
Vicki CheungFounder

Founding Engineer, then first CTO at StripeYC S09

Intro paths

YC

Stripe went through Y Combinator (Summer 2009) — Greg is an executive there, so any YC alum in your network can reach them through the company's founders.

→

In turn, Greg can intro founders to Stripe's investors below.

Stripe's investors · 107

1435 CapitalSkillman500 GlobalPalo Alto · $150K checks · since 2014AdditionNew YorkAdvaita CapitalBostonAdventure FundBrooklynAglae VenturesParis · $108K – $5.4M checksAir Street CapitalSt. Peter Port · $500K – $10M checksAliya Capital PartnersMiamiAlkeon InnovationNew YorkAllianz XMunich · since 2021Altos VenturesBurlingame · $1M – $3M checksAlvenParisAmerican Express Ventures (Amex)Andreessen HorowitzMenlo Park · $500K – $50M checks · since 2026AtomicoLondonAxevil CapitalSan FranciscoBaillie GiffordEdinburgh · since 2021Base PartnersSão PauloBase10 PartnersSan Francisco · $100K – $5M checksBlue Owl CapitalNew YorkBond Capital ManagementSan Francisco · $100K – $25M checksBoxGroupNew York · $250K – $1M checksCapitalGSan Francisco · $75M – $100M checksCoatue ManagementNew York · $1M – $20M checksDesigner FundSan Francisco · $100K – $1M checksDria VenturesNew YorkDST GlobalGeorge Town, Grand CaymanElad GilSan Francisco · $100K – $10M checksEmerson Collective InvestingPalo Alto · $100K – $1M checksEntrée CapitalTel Aviv · $150K – $15M checksEQUIAMSan Francisco · $1M – $10M checksEthos VCSan Francisco · $250K – $3M checksFelicis VenturesSan Francisco · $500K – $15M checksFidelity InvestmentsBostonFirestreak VenturesFirstMark CapitalNew York · $500K – $8M checks · since 2024FJ LabsNew York · $100K – $3M checksFounders FundSan Francisco · $500K – $5M checks · since 2023Fourth RealmMenlo ParkG SquaredChicagoGaldana VenturesBarcelonaGeneral CatalystSan Francisco · $30M checks · since 2023GICSingapore · since 2023Glade Brook Capital PartnersGreenwichGlynn Capital ManagementMenlo ParkGolden Gate VenturesSingapore · $1M – $5M checksGoose Valley VenturesStockholm · $870K checksGreen Meadow VenturesWest Hollywood · $500K – $3M checksGreenoaksSan Francisco · $1M – $50M checksGroveStreetNewtonGV (Google Ventures)Mountain View · $250K – $50M checksHeavybitSan Francisco · $500K – $5M checksHomebrewBurlingame · $100K – $500K checksICONIQSan FranciscoImaginary Venture CapitalNew York · $1M – $10M checksIndex VenturesSan Francisco · $540K – $10.8M checks · since 2019Interplay Ventures Early Stage Management LlcNew York · $1M checksInvesdorBerlinInvestXVancouverIreland Strategic Investment FundDublinJuniperoMiamiKhosla VenturesMenlo Park · $100K – $20M checksKleiner PerkinsMenlo Park · $500K – $15M checksLa FamigliaBerlinLightspeed Venture PartnersMenlo Park · $1M – $5M checksLowercase CapitalJacksonMarketX VenturesMistletoeTokyoMoment Ventures, LlcPalo AltoMsd CapitalNew YorkNew Wavesince 2024Night CapitalCapitolaNotable CapitalSilicon Valley · $5M – $50M checksOptimist VenturesNew YorkParadigmSan Francisco · $1M – $100M checksPeter Thielsince 2011Practical Venture CapitalSilicon ValleyPreston-Werner VenturesSan Francisco Bay Area · $500K – $3M checksPrime VenturesAmsterdam · $5.4M – $16.2M checksQuest VenturesSingaporeRedpoint VenturesWoodside · $100K – $10M checksRibbit CapitalPalo Alto · $2M – $15M checksSam AltmanSciFi VCSan Francisco · $100K – $1M checksSeiho Investment WorksKyoto · $67K – $670K checksSequoia CapitalMenlo Park · $100K – $50M checks · since 2024Sherpalo VenturesMenlo ParkSignalFireSan Francisco · $250K – $15M checks · since 2024Silver Lake PartnersMenlo ParkSixth StreetSan Francisco · $50M – $2.5B checksSouth QuadSquare Peg CapitalSydneySquareOneBerlin · $378K – $3.8M checksSquareOne CapitalMiamiStandard CapitalSan FranciscoSV AngelSan Francisco · $150K – $20M checks · since 2011TemasekSingapore · since 2023The Players' ImpactThrive CapitalNew York · $500K – $25M checks · since 2026Tiger Global ManagementNew York · $1M – $100M checks · since 2018Union Square Ventures (USV)New York · $1M – $8M checksVentioneers CapitalOakvilleWAGMI VenturesWealthUnion$10K checksWonder VenturesLos Angeles · $100K – $1.5M checksXYZ Venture CapitalSan Francisco · $10K – $5M checksY CombinatorSan Francisco · $500K checks · since 2009

Co-founders at Stripe

JCJohn Collison
John CollisonFounder
PCPatrick Collison
Patrick CollisonFounder

Experience

  1. OpenAIPresident, Chairman, & Co-Foundercurrent2015 — present
  2. StripeCTO2010 — 2015

Investments

Per curated public sources.

Podcasts & interviews

featuring Greg Brockman

Greg Brockman on Astra and the Future of OpenAI

TBPN

OpenAI President Greg Brockman: Our Plan To Merge Chat And Agents

Alex Kantrowitz

OpenAI's Greg Brockman: Why Human Attention Is the New Bottleneck

Sequoia Capital

OpenAI President Greg Brockman on GPT-5.5 “Spud,” AI Model Moats, and Cybersecurity Risks

Alex Kantrowitz

OpenAI President Greg Brockman: AI Self-Improvement, The Superapp Bet, Path To AGI, Scaling Compute

Alex Kantrowitz

Greg Brockman on OpenAI's Road to AGI

Latent Space

3 more appearances

Network1

Andrej KiskaScout
Board Partner at Credo Ventures

Investors connected to Greg in public investor directories — a warm-intro map.

Frequently asked questions

Who is Greg Brockman?
Greg Brockman co-founded OpenAI in 2015 and, as its President, is worth an estimated $25.5 billion on the company's $852 billion March 2026 valuation. A math-olympiad kid from Thompson, North Dakota (pop. ~1,000) who won silver at the 2006 International Chemistry Olympiad, he left Harvard, then MIT, to become one of Stripe's first engineers — its first CTO, scaling engineering from 5 to 205 people. At OpenAI he was CTO, then President, personally live-demoing GPT-4 on launch day; when the board fired Sam Altman in November 2023, Brockman quit within hours and returned with him five days later.
Where does Greg Brockman work?
Greg Brockman is Founder of OpenAI and Founding Engineer, then first CTO at Stripe.
What check size does Greg Brockman write?
Greg Brockman typically writes checks of $100K – $5M.
What companies did Greg Brockman found?
Greg Brockman founded OpenAI.
What companies has Greg Brockman invested in?
Investments tracked here include Abacus, Algolia, Bright, Clara Labs, Cosmic, Deepnote, Doppler, Gigster, HiOperator, Human Interest, Hypermile, Jopwell, and 14 more.
Where did Greg Brockman go to school?
Greg Brockman studied at Massachusetts Institute of Technology (Computer Science); Harvard University (Mathematics and Computer Science).
What awards has Greg Brockman received?
Brockman won a silver medal in the 2006 International Chemistry Olympiad. Brockman was the first finalist from North Dakota to participate in the Intel Science Talent Search since 1973.
What podcasts and interviews feature Greg Brockman?
Tracked appearances include "Greg Brockman on Astra and the Future of OpenAI", "OpenAI President Greg Brockman: Our Plan To Merge Chat And Agents", "OpenAI's Greg Brockman: Why Human Attention Is the New Bottleneck", and 6 more.

Founder mafias

Same school

Shared employers