Michael Seibel is an Angel Investor with a distinguished career in technology and venture capital. See sector focus and contact routes.
Michael Seibel is an Angel Investor with a distinguished career in technology and venture capital. He served as a Partner Emeritus at Y Combinator, where he held the leadership position for the accelerator from 2016 to 2024. His extensive experience also includes significant board memberships, currently serving on the boards of Reddit, Dropbox, and Kalshi. Prior to his impactful tenure at Y Combinator, Seibel demonstrated his entrepreneurial prowess as a co-founder of two successful ventures: Justin.tv, which later evolved into Twitch, and Socialcam. Both of these companies achieved successful acquisitions, underscoring his ability to build and scale impactful technology businesses.
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