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Mr. O’Kelley is the CEO of Scope3, a company he co-founded in December 2021 focused on decarbonization in media and advertising through end-to-end emissions measurement across the supply chain. In 2019 Mr. O’Kelley co-founded Waybridge, a supply-chain platform for commodities, and was its CEO until December 2021. Previously he was CEO of AppNexus, a company he co-founded in 2007 which was acquired by AT&T in 2018. From the acquisition date until February 2019 he served as a strategic advisor to assist with the integration of AppNexus into AT&T. Prior to AppNexus, for four years Mr. O’Kelley was Chief Technology Officer of Right Media, a digital advertising exchange acquired by Yahoo in 2007. Mr. O’Kelley serves on the board of Tech:NYC. He has been recognized in Crain’s “40 Under 40,” Adweek 50, and Silicon Alley 100 lists. In 2012 he was named as an “EY Entrepreneur of the Year” in the New York region. O’Kelley holds a Bachelor of Science in Engineering degree in Computer Science from Princeton University.