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Our Leadership Team

Creating a better internet

Leading the charge to create a better internet

Our Executive Team

Brian O’Kelley

CEO and Co-Founder

Michael Rubenstein

President

Jonathan Hsu

Chief Financial Officer


Ryan Christensen

Chief Operating Officer





Catherine Williams

Chief Data Scientist


Ben John

Chief Technology Officer








Brandon Atkinson

Chief People Officer


Nithya Das

SVP, General Counsel


Kris Heinrichs

SVP, Finance


Eric Hoffert

SVP, Video Technology


Ron Lissack

SVP, Chief Architect


Patrick McCarthy

SVP, Product


Tom Shields

Chief Strategy Officer


Tim Smith

SVP, Technical Operations


Our Board of Directors

Elisabeth DeMarse

Chairman, CEO, and President, TheStreet, Inc.

Ed Gillis

Business Consultant and Private Investor

Brian Lesser

CEO, GroupM North America

Dave O’Hara

Chief Operating Officer, Microsoft Advertising

Brian O’Kelley

CEO and Co-Founder, AppNexus

Michael Rubenstein

President, AppNexus

Mike Tyrrell

Partner, Venrock

Dave Yuan

General Partner, Technology Crossover Ventures (TCV)

Robert Callahan

Chairman, Longueview