Nat Friedman serves as Chief Executive Officer at GitHub. He is an Angel Investor. He drives the company's vision of a global community of developers building the future together. Nat is passionate about building products that delight developers, and is a long-time leader in the open source community. He has co-founded two companies: Xamarin in 2011, where he served as CEO through acquisition by Microsoft in 2016, and Ximian in 1999. He is also Co-Founder of AI Grant, the GNOME Foundation and Co-Founder and Chairman of California YIMBY.