Michael Seibel

Partner · Y Combinator · San Francisco, United States

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Partner Emeritus at Y Combinator

Stages: Pre-seed, Series A, Seed
Sectors: AI, Health tech, Deep tech
Cheque size: €138k–€138k
Location: San Francisco, United States
Freshness: Verified today

Notable investments

Simple AISeed · $14M · 2026
Legion HealthSeed · $2.1M · 2026
FINNYSeries A · $17M · 2025
Reditus SpaceSeed · $7M · 2025
CuckooSeed · $2M · 2025
Mecha HealthSeed · $4M · 2025
FleetWorks TechnologySeries A · $17M · 2025
DianaHRSeed · $4M · 2025

Frequently co-invests with

Andre CharooiNovia CapitalArash FerdowsiBill TrenchardFirst Round CapitalDiana HuY CombinatorEmmett ShearGareth JefferiesRTP GlobalImmad AkhundY CombinatorJason WenkMatterscale VenturesJohn DiazStone Mountain VenturesJonathan EhrlichFoundation CapitalJustin KanGoat CapitalKevin MahaffeyLookout

Background

Partner EmeritusY Combinator2025–present
CEOIT CRUX Mobile Apps Solutions
Finance DirectorIT CRUX Mobile Apps Solutions
CEORobyn Frankel
Finance DirectorRobyn Frankel
PartnerY Combinator2014–2025
Part-time PartnerY Combinator2013–2014
CEOSocialcam2011–2014
CEOTop-Patents2011–2014
CEONewCo2011–2014
CEOSm4rt Predictive Systems2011–2014
CEOCenter for Rural Health Leadership2011–2014
CEOMinttown2011–2014
CEOMfume for US Senate 20062011–2014
CEOJustin.tv2006–2011
CEOTwitch2006–2011
Finance DirectorMfume for US Senate 20062005–2006
Finance DirectorTop-Patents2005–2006
Finance DirectorNewCo2005–2006
Finance DirectorSm4rt Predictive Systems2005–2006
Finance DirectorCenter for Rural Health Leadership2005–2006
Finance DirectorMinttown2005–2006

Michael Seibel's colleagues at Y Combinator

Every verified colleague at Y Combinator

One payment, no subscription - they all drop into your wallet.

Carolynn LevyPartner, Y Combinator

Jon LevyManaging Director, Y Combinator

Kirsty NathooPartner, Y Combinator

Brad FloraPartner, Y Combinator

Reshma KhilnaniPartner, Y Combinator

Garry TanPresident, Y Combinator

Immad AkhundUnknown, Y Combinator

Diana HuPartner, Y Combinator

Geoff RalstonPartner, Y Combinator

Ali RowghaniUnknown, Y Combinator

Ben HuhUnknown, Y Combinator

Harj TaggarManaging Partner, Y Combinator

Surbhi SarnaPartner, Y Combinator

Aaron EpsteinPartner, Y Combinator

Gustaf AlströmerPartner, Y Combinator

Nicolas DessaignePartner, Y Combinator

See all 17 at Y Combinator →

Related lists

AI investors Health tech investors Deep tech investors Pre-seed AI in United States Series A AI in United States Seed AI in United States

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