Leadership

Michael Seibel Managing Director, Y Combinator ▶ The Opening Dear Mr. Seibel — You've helped build two companies that changed how people communicate (Justin.tv → Twitch, Socialcam)... Dear Mr. Seibel, You’ve helped build two companies that changed how people communicate (Justin.tv → Twitch, Socialcam). Then you spent years at Y Combinator helping hundreds of founders build theirs. You understand what it takes to go from idea to scale. We have the idea. We need someone who can build the machine. ...

Michael Seibel Managing Director, Y Combinator CROWN LETTER: MICHAEL SEIBEL CEO Candidate — Liana Banyan Corporation To: Michael Seibel From: Jonathan Jones, Founder Date: January 23, 2026 Re: Leading the cooperative that shouldn’t work (but does) Michael, You’ve spent your career finding founders who see what others miss and helping them build what others say can’t be built. I’m writing because I’ve spent nine years building something the startup world would call impossible — and it’s ready. ...