Sebastien de Halleux
InvestorPartner at Graph Ventures
San Francisco, California
Writes $50K – $300K checks · typically $150K
Find your path to Sebastien
536 people in our graph share verified history with Sebastien — schools, employers, funds. One of them is your warm intro.
Alexandra FarmerunlockedSebastien: together at Field AI (2025)
×3Sebastien: together at Imperial College London
×3Sebastien: together at EA
Sebastien: together at Capricorn Investment Group
About
Sebastien de Halleux, serial entrepreneur-operator and co-founder of Playfish, Saildrone and Field AI, brings gaming, ocean-tech and robotics product experience and prioritizes product quality and user delight over monetization.
Invests in
AI & Machine LearningCrypto & Web3Deep TechDeveloper ToolsE-commerceEdTechEnterprise SoftwareFintechHardwareMarketplacesMedia & EntertainmentPropTechSaaS
Experience
- Graph VenturesFounding General Partnercurrent2010 — presentSan Francisco Bay Area
- MatchdayCo-Founder & Chief Gaming Officer2022 — 2025San Francisco, California, United States
- Field AICOO/Advisor2024 — 2025San Francisco Bay Area
- Capricorn Investment GroupEntrepreneur In Residence2021 — 2022Palo Alto, California, United States
- Saildrone IncCOO2015 — 2020San Francisco Bay Area
- The Aspen InstituteHenry Crown Fellow 20162016 — 2018Aspen, CO
- Younited S.A.Board Member2010 — 2017Brussels Metropolitan Area
- United World College - USATrustee2011 — 2017Montezuma, New Mexico
- Togetr IncFounder & CEO2012 — 2016San Francisco
- VittanaBoard Member2011 — 2014Greater Seattle Area
- SamasourceBoard Member2011 — 2013San Francisco Bay Area
- EAVP Bus Development & Strategic Partnerships, EAi2009 — 2011San Francisco Bay Area
- PlayfishChief Operating Officer & Co-Founder2007 — 2009San Francisco Bay Area
- NokiaStrategy and Business Development2007Helsinki, Finland
- Glu MobileStrategy & Operations2003 — 2007London
- Booz Allen HamiltonConsultant2000 — 2003London Area, United Kingdom
Skills & more
Strategy46Management26Early Stage InvestmentArtificial Intelligence (AI)Climate Tech2Big Data1Start-ups81Strategic Partnerships64Video Games19Social Games11Mobile Devices53Project Management13
+12 more
MonetizationOnline MarketingBusiness DevelopmentMobile GamesSocial NetworkingEntrepreneurshipNew Business DevelopmentMarketingBoard DevelopmentBoard RelationsNon-profit Board DevelopmentCorporate DevelopmentFrom Sebastien's professional profile.
Colleagues at Graph Ventures
Network3
Alexandra BrownScout
Investor at Graph Ventures
Bob SpinnerScout
Founding Partner at Jackson Square Ventures
Brian TruongScout
Partner at Graph Ventures
Investors connected to Sebastien in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Sebastien de Halleux?
- Sebastien de Halleux, serial entrepreneur-operator and co-founder of Playfish, Saildrone and Field AI, brings gaming, ocean-tech and robotics product experience and prioritizes product quality and user delight over monetization.
- Where does Sebastien de Halleux work?
- Sebastien de Halleux is Partner at Graph Ventures.
- What does Sebastien de Halleux invest in?
- Sebastien de Halleux invests in AI & Machine Learning, Crypto & Web3, Deep Tech, Developer Tools, E-commerce, EdTech, Enterprise Software, Fintech, Hardware, Marketplaces, Media & Entertainment, PropTech, SaaS.
- What check size does Sebastien de Halleux write?
- Sebastien de Halleux typically writes checks of $50K – $300K.
- Where did Sebastien de Halleux go to school?
- Sebastien de Halleux studied at Imperial College London (MEng (Hons), Civil & Environmental Engineering); Université catholique de Louvain (Undergraduate, Ingenieur Civil); UWC-USA (International Baccalaureate).
Same school
Also attended Imperial College London718
Deji SasegbonVP, Platform & Portfolio Operations at EchoVC PartnersMadison LenormandInvestor at DaphniLoubaba El AyoubiInvestor at NorthzoneGiovanni MariggiInvestor at MedicxiFrancois PrinslooInvestor at MedicxiBen PerryInvestor at Medicxi
+ 712 more
Also attended Université catholique de Louvain104
Iñigo López-HuertaCFO at Ysios CapitalCharles de LiedekerkeInvestor at Inventures Investment PartnersPaul VarassoPrincipal at Axeleo CapitalJérôme WittamerCo-founder and Managing Partner at Expon CapitalYves TrouveroyInvestment Partner at E-Capital Equity ManagementVincent BrichardVenture Partner at EQT Life Sciences
+ 98 more
Also attended UWC-USA6
Shared employers
Also worked at The Aspen Institute142
Toby CoppelCo-founder and Partner at Mosaic VenturesChandar LalPartner at Mosaic VenturesDavid Rosenthal, MDVenture Partner at AlleyCorpGary LauderFounder at Lauder PartnersJoshua BaerFounder & CEO at Capital FactorySamara Mejia HernandezFounding Partner at Chingona Ventures
+ 136 more
Also worked at EA135
Rajat TanejaInvestor at Foundation CapitalRobert TomkinsonSelf at Mucker CapitalBrian OsimiriInvestor at CapitalGGustav RydstedtAdvisor, Infrastructure Software at Verissimo VenturesShanti BergelManaging Director at TRANSCENDAndrew SheppardManaging Director at TRANSCEND
+ 129 more
Also worked at Nokia313
Nick FrosstCo-founder of CohereViswa SankaranarayananVenture Partner at Monta Vista CapitalAdamAdvisor at Clear VenturesSamir MatkiInvestor at DaphniTony NystenPartner at OpenOceanTimo AhopeltoSerial tech entrepreneur and early-stage investor running Lifeline Ventures
+ 307 more
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