Mr. Nathaniel Turner is a Co-Founder & serves as the Chief Executive Officer at Flatiron. He serves as a Board Member at Sema4. He also serves as Executive Chairman at Collectors Universe. He oversees all initiatives across provider solutions, clinical oncology, business development, sales operations, legal and other corporate functions. Before co-founding Flatiron Health, Nat was co-founder and CEO of Invite Media, an advertising technology company based in NYC. Invite Media built the industry's first enterprise advertising platform for buying and optimizing online media in real-time. He also serves as a General Partner at Operator Partners. Invite Media was acquired by Google in 2010. Prior to Invite Media, Nat started numerous internet companies and also worked at Say Media and First Round Capital. An active angel investor, Nat has invested in over 30 technology startups throughout the country, including Bell Biosystems, Clover Health, Color Genomics, Doctor Evidence, Gravie, Notable Labs, Oscar and Quarter Health. Nat earned a Bachelor of Science degree cum laude in economics with concentrations in entrepreneurship and marketing from the Wharton School at the University of Pennsylvania. He also serves as Advisor at Great Oaks Venture Capital. He also serves as Advisory Board Member at Integrated CBD.