Brian O'Kelley
Brian O’Kelley is an angel investor and serial entrepreneur based in Brooklyn, New York, who previously served as co-founder and CEO of AppNexus, an ad tech firm acquired by AT&T for
.6 billion in 2018[2][13]. He currently leads Scope3, a sustainability startup decarbonizing digital advertising, and holds advisory roles at firms like Blacksheep Ventures and Armis[1][2]. His investment thesis ta…
- Stages: Seed
- Focus: General
- Location: New York, New York, United States
- Portfolio companies: 13
- Investments: 15
- Exits: 6
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