Overview
Brian O'Kelley is co-founder and CEO of Scope3, building infrastructure for agentic advertising[1][2]. O'Kelley previously served as co-founder and CEO of AppNexus from September 2007 to August 2018[7], a company that sold to AT&T for $1.6 billion in 2018[2]. Earlier, O'Kelley held the position of CTO at Right Media from August 2003 to July 2007[8], prior to that company's acquisition by Yahoo for $850 million in 2007[2]. O'Kelley also co-founded and served as CEO of Waybridge, a supply chain technology company, from July 2019 to December 2021[5]. O'Kelley holds a BSE in Computer Science from Princeton University[11].
Profile introduction
Brian O’Kelley is the CEO and co-founder of Scope3, building infrastructure for agentic advertising. Brian was the co-founder and CEO of AppNexus through its $1.6B sale to AT&T in 2018. He co-founded Waybridge, a supply chain technology company, and served as CTO of Right Media through its successful acquisition by Yahoo for $850M in 2007. He was on the board of LiveRamp leading up to its sale to Publicis for $2.2B in 2026. Brian architected the Ad Context Protocol (AdCP) to establish the technical foundations for agents to execute advertising transactions. He invented many of the key techno…
Career history
- Co-Founder and CEOJan 2022 to presentScope3
- Executive ProducerMar 2022 to presentWonderstruck
- Co-Founder and CEOJul 2019 to Dec 2021Waybridge
- Strategic Advisor to XandrAug 2018 to Feb 2019AppNexus
- Co-founder and CEOSep 2007 to Aug 2018AppNexus
- CTOAug 2003 to Jul 2007Right Media
- Executive Vice PresidentMay 2001 to Jan 2003Cetova
- Vice PresidentOct 1999 to Apr 2001LogicSpan
Education
BSE, Computer ScienceSep 1995 - Jun 1999Princeton University
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