Appnexus
AcquiredNew York, US · Delaware corporation · 3 known investors
Find your way into Appnexus
189 people in our graph share verified history with the Appnexus team — schools, employers, funds. One of them is your warm intro.
Roni Hiranandunlockedknows Brian O'Kelly · together at Scope3 (overlapped)
×2knows the team · via Appnexus
×9knows the team · via Princeton University
Founders & leadership
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Brian O'Kelleyin𝕏Co-founder and CEO2007–2018Brian O'Kelley is CEO and co-founder of Scope3, which builds infrastructure for agentic advertising. He previously co-founded and led AppNexus as CEO until its acquisition by AT&T in 2018, and earlier co-founded Waybridge and served as CTO of Right Media through its 2007 sale to Yahoo, holding a B.S.E. in Computer Science from Princeton.
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Nithya DasExecutive
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Jonathan HsuExecutive
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Michael RubensteinExecutive
Board
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David O'HaraBoard director
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Michael TyrrellBoard director
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David YuanBoard director
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Brian LesserBoard director
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Elisabeth DeMarseBoard director
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Edwin GillisBoard director
Investors · 3
Reported raises · per SEC filings
Form D private placements$122.7M disclosed across 2 rounds · 2014–2015
▶$62.7MraisedApr 2015 · 22 investors · Other TechnologyRule 506(b)
▶$62.7MraisedApr 2015 · 22 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- David O'HaraDirector
- Brian O'KelleyExecutive Officer, Director, Promoter
- Elisabeth DeMarseDirector
- Michael TyrrellDirector
- David YuanDirector
- Nithya DasExecutive Officer
- Edwin GillisDirector
- Jonathan HsuExecutive Officer
- Chip MeakemDirector
- Michael RubensteinExecutive Officer, Director
- Brian LesserDirector
- Offering amount
- $62.7M
- Amount sold
- $62.7M
- First sale
- Apr 2015
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$60MraisedAug 2014 · 11 investors · Other TechnologyRule 506(b)
▶$60MraisedAug 2014 · 11 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Nithya DasExecutive Officer
- David O'HaraDirector
- Chip MeakemDirector
- Edwin GillisDirector
- David YuanDirector
- Michael RubensteinExecutive Officer, Director
- Jonathan HsuExecutive Officer
- Michael TyrrellDirector
- Brian O'KelleyExecutive Officer, Director, Promoter
- Offering amount
- $100M
- Amount sold
- $60M
- Sales commissions
- $2.3M
- Placement agents
- J.P. Morgan Securities LLC
- First sale
- Aug 2014
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Founder mafia
The Appnexus mafia →6 people who came through Appnexus went on to found or lead other companies.
Wendy JohanssonHead of User ExperienceFounded Misaludhealth +2Samir ShergillManaging Director (JAPAC, LatAm) / VP ProductFounded Highbeam +1Eric BerryEarly employee in various rolesFounded Triple LiftKim StiefelSr. Account Executive - DSP partnersFounded RepeatScott SansovichProduct ManagerFounded Eden HealthEric BerryEarly employee in various rolesFounded Triple Lift
Frequently asked questions
- Who founded Appnexus?
- Appnexus was founded by Brian O'Kelley.
- Who are Appnexus's investors?
- Appnexus's investors include Milliways Ventures, Tribeca Venture Partners, Venrock.
- How much funding has Appnexus raised?
- Appnexus has disclosed $122.7M raised across 2 rounds.
- Where is Appnexus headquartered?
- Appnexus is headquartered in New York, US.






