What check size does Brian O'Kelley write?

Brian O'Kelley typically writes checks of $5K – $50K.

Where did Brian O'Kelley go to school?

Brian O'Kelley studied at Princeton University (BSE, Computer Science).

Brian O'Kelley

Angel

Brooklyn, New York

Writes $5K – $50K checks · typically $25K

About

Brian O'Kelley is the co-founder and CEO of Scope3, a company building infrastructure for agentic advertising, and the architect of the Ad Context Protocol. He previously co-founded and led AppNexus through its $1.6B sale to AT&T in 2018, served as CTO of Right Media through its $850M acquisition by Yahoo in 2007, co-founded Waybridge, and sat on the board of LiveRamp; he holds 17 patents and was the original author of the open source Prebid Server project. O'Kelley holds a B.S.E. in Computer Science from Princeton University and lives in Brooklyn.

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

Online Advertising99Monetization47Yield Management33Analytics99Advertising98

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.

Network6

Amish JaniScout

Founder and Partner at FirstMark Capital

Andrei DuncaScout

Angel

Ariel ArrietaScout

General Partner at NXTP

David MartiranoScout

Managing Partner at PJC

Fred DestinScout

Founder at Stride VC

Kelly Perdew

Co-Founder and Managing General Partner at Moonshots Capital

Investors connected to Brian in public investor directories — a warm-intro map.

Frequently asked questions

Who is Brian O'Kelley?: Brian O'Kelley is the co-founder and CEO of Scope3, a company building infrastructure for agentic advertising, and the architect of the Ad Context Protocol. He previously co-founded and led AppNexus through its $1.6B sale to AT&T in 2018, served as CTO of Right Media through its $850M acquisition by Yahoo in 2007, co-founded Waybridge, and sat on the board of LiveRamp; he holds 17 patents and was the original author of the open source Prebid Server project. O'Kelley holds a B.S.E. in Computer Science from Princeton University and lives in Brooklyn.
What check size does Brian O'Kelley write?: Brian O'Kelley typically writes checks of $5K – $50K.
Where did Brian O'Kelley go to school?: Brian O'Kelley studied at Princeton University (BSE, Computer Science).