Michael Seibel

Michael Seibel is the CEO of YC. He was the cofounder and CEO Justin.tv and Socialcam. Socialcam sold to Autodesk in 2012 and under the leadership of Emmett Shear, Justin.tv became Twitch.tv and sold to Amazon in 2014. Before getting into startups, he spent a year as the finance director for a US Senate campaign and in 2005, Michael graduated from Yale University with a BA in political science.


Users You Don’t Want

Michael Seibel, Y Combinator Partner, on users that hijack your product.

Product Development Cycle Fundamentals

Before Justin.tv grew into Twitch and Socialcam we spent years with a broken understanding of how to build product. We had meandering product meetings where we didn’t write…

How to Pitch Your Company

Michael Seibel on pitching your company to investors.

How to Email Early Stage Investors

Michael Seibel on communicating with investors.

The Real Product Market Fit

Michael Seibel on knowing when you’ve found product market fit and when to keep looking.

A Letter to College Students

I often talk to people who want to start startups in their late 20s and 30s, but can’t.

How to Split Equity Among Co-Founders

Founders often ask how they should split equity with their co-founders. When I search the web on this topic I often see horrible advice, typically advocating for significant…

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