Brian O'Kelly
InvestorFounderAdvisor at BlackSheep Ventures · Founder at Appnexus · Founder at Scope3
Brooklyn, New York, United States
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158 people in our graph share verified history with Brian — schools, employers, funds. One of them is your warm intro.
About
Brian O'Kelley is the co-founder and CEO of Scope3, a company building infrastructure for agentic advertising, and architected the Ad Context Protocol (AdCP) for agent-executed advertising transactions. He previously co-founded and led AppNexus through its $1.6 billion sale to AT&T in 2018, served as CTO of Right Media through its $850 million acquisition by Yahoo in 2007, co-founded the supply chain technology company Waybridge, and sat on the board of LiveRamp. He holds 17 patents, authored the open source Prebid Server project, and earned a B.S.E. in Computer Science from Princeton University.
Founder at Appnexus
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Founder at Scope3
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Experience
- Scope3Co-Founder and CEOcurrent2022 — presentBrooklyn, NY
- WonderstruckExecutive Producercurrent2022 — presentBrooklyn, New York, United States
- WaybridgeCo-Founder and CEO2019 — 2021Greater New York City Area
- AppNexusStrategic Advisor to Xandr2018 — 2019Greater New York City Area
- AppNexusCo-founder and CEO2007 — 2018NYC
- Right MediaCTO2003 — 2007NYC
- CetovaExecutive Vice President2001 — 2003
- LogicSpanVice President1999 — 2001
Skills & more
- Certified Ethical Advertising Executive — Institute for Advertising Ethics
- edX Verified Certificate for Supply Chain Comprehensive Exam — edX
- Ethical Decision Making — Emtrain
- Preventing Workplace Harassment — Emtrain
From Brian's professional profile.
Colleagues at BlackSheep Ventures
Frequently asked questions
- Who is Brian O'Kelly?
- Brian O'Kelley is the co-founder and CEO of Scope3, a company building infrastructure for agentic advertising, and architected the Ad Context Protocol (AdCP) for agent-executed advertising transactions. He previously co-founded and led AppNexus through its $1.6 billion sale to AT&T in 2018, served as CTO of Right Media through its $850 million acquisition by Yahoo in 2007, co-founded the supply chain technology company Waybridge, and sat on the board of LiveRamp. He holds 17 patents, authored the open source Prebid Server project, and earned a B.S.E. in Computer Science from Princeton University.
- Where does Brian O'Kelly work?
- Brian O'Kelly is Founder of Appnexus and Advisor at BlackSheep Ventures and Founder at Scope3.
- What companies did Brian O'Kelly found?
- Brian O'Kelly founded Appnexus, Scope3.
- Where did Brian O'Kelly go to school?
- Brian O'Kelly studied at Princeton University (BSE, Computer Science).
Founder mafias
Appnexus mafia7
Also came through, then founded or led a company.
BlackSheep Ventures mafia4
Also came through, then founded or led a company.
Same school
Also attended Princeton University879
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Shared employers
Also worked at Scope33
Also worked at Waybridge1
Also worked at AppNexus19
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