Investing Profile

Michael Seibel

VCInvestorAngel
Managing Director and Group Partner at Y Combinator
michaelseibel.comSan Francisco, California
Photo of Michael Seibel, Managing Director at Y Combinator

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Yale University Network
129 CONNECTIONS
Y Combinator Network
37 CONNECTIONS
Y Combinator Network
37 CONNECTIONS
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Y Combinator Managing Director
$150K - $150K
$150K
187
CompanyStageDateRound SizeTotal Raised
Recall.ai
Series BSep 2025$38M
$51M
Co-investors: Akriti Dokania (Ridge Ventures (Formerly known as IDG Ventures USA)), Siqi Chen, Eoghan McCabe
Kira
SeedAug 2025$7M
$28M
Co-investors: Carmen Chang (New Enterprise Associates (NEA)), Andrew Ng (AI Fund)
arketa
Series AJun 2025$15M
SeedDec 2022$8M
$23M
Co-investors: Hayley Barna (First Round Capital), Amy Fu (First Round Capital), Alexa von Tobel (Inspired Capital), Chris Brown (Inspired Capital), Patrick Yang (Amity Ventures), Lucy Deland (Inspired Capital), Allison Pickens (Allison Pickens Ventures, formerly The New Normal Fund), Chris Hulls
Axle Health
Series AMay 2025$10M
Pre SeedMar 2021$200K
$25M
Co-investors: Vivien Ho (Pear VC), Mar Hershenson (Pear VC), Carl Byers (F-Prime Capital Partners), Gustaf Alströmer (Y Combinator), Eric Ong (Lightbank), Nikhil Krishnan, Ralph Gootee
Arena
Series BApr 2025$30M
Series AAug 2022$32M
$78M
Co-investors: Murat Bicer (CRV), Peter Thiel (Founders Fund), Romero Rodrigues (Headline (formerly e.ventures)), Brian Rowen (Great Oaks Venture Capital), Colin Anderson (Friends & Family Capital), David Petraeus
Retrofit
Pre SeedMar 2025$500K
$12M
Co-investors: Jai Shekhawat (Chicago Ventures), Stuart Larkins (Chicago Ventures), Matt Ocko (DCVC (Data Collective)), Howard Lindzon (Social Leverage), Dan Malven (4490 Ventures), Brian Spaly (Brand Foundry Ventures)
Mesh
SeedMar 2025
$150M
Co-investors: Ruth Foxe Blader (Anthemis Group), Charlie Noyes (Paradigm), Ullas Naik (Streamlined Ventures), Anamitra Banerji (Afore Capital), Matt Ocko (DCVC (Data Collective)), Cindy Bi (CapitalX), Will Smith (Dreamers VC), Ramzi Rafih (No Label Ventures), Niall McEvoy (Elkstone), Kevin Mahaffey (SNR), Neeraj Arora (Venture Highway), Rajan Anandan (Peak XV Partners (formerly Sequoia Capital India & SEA)), Peter Bordes (Trajectory Ventures), Elaine Russell (Greycroft), Madhur Makkar (RTP Global), Hemant Bhardwaj (Taurus Ventures), Anne Dwane (Village Global), Amman Bhasin, Sumon Sadhu, Viral Bajaria, Munish Varma, Ilya Kondrashov, Immad Akhund, Gokul Rajaram, Ali Moiz, Arash Ferdowsi, Mike Giampapa, Sahin Boydas, Alison Engel
a0.dev
Pre SeedMar 2025$500K
$500K
Co-investors: Ryan Merket (Comal Ventures)
Partner Y Combinator2014 - Present
Part-time Partner Y Combinator2013 - 2014
CEO Socialcam2011 - 2014
CEO Justin.tv2006 - 2011
Finance Director Mfume for US Senate 20062005 - 2006
Yale University BA Political Science