Nominate a leader for the 2025 A100 by December 1, 2024.

Michael Seibel

Partner, Y Combinator & Co-Founder and Former CEO, Justin.tv and Socialcam

Michael Seibel is a partner a Y Combinator and CEO of the YC accelerator program. Previously, Michael was a co-founder and CEO of Justin.tv from 2007 – 2011 and the co-founder and CEO of Socialcam in 2012. During 2012, Socialcam participated in Y Combinator, raised angel financing, and sold to Autodesk Inc. for $60 million. In 2014 Justin.tv became Twitch Interactive and under the leadership of Emmett Shear and Kevin Lin sold to Amazon for $970 million. Before getting into tech, Michael spent a year as the finance director for a U.S. Senate campaign and graduated from Yale University with a bachelors degree in political science. Today he spends the large majority of his free time cooking, reading, traveling and going for long drives.