Nat Kelner is Columbia Entrepreneurship’s Senior Associate Director specializing in new projects. He drove the successful launch of the Lab and oversees the high-level functioning of the SoHo facility. Nat plays a key role on the teaching team of Steve Blank’s Lean LaunchPad boot camp, Launching New Ventures, and the Greenhouse Accelerator at CBS. Nat conducts entrepreneurship office hours and works on the successful launch of our next big thing. Prior to Columbia, Nat co-founded the Vermont Venture Foundry and was lead programmer at an angel-backed startup.