Brian O'Kelley

Angel Investor · Brian O'Kelley

Brian O'Kelley is an active angel investor who primarily targets early-stage technology companies, focusing on enterprise software, artificial intelligence (AI), B2B SaaS, and ad tech sectors [2]. His portfolio includes notable companies such as Perplexity AI, Firsthand, Scope3, MediaMath, and Tapad, with individual check sizes ranging from 50,000 to $4 million in seed and pre-seed rounds [1][2…

Focus: Mr. Brian O'Kelley is a Co-Founder and serves as the Chief Executive Officer & Chairman at AppNexus. He is also an Angel Investor. He also serves as Advisor at Tribeca Venture Partners and ICX Media. As CEO of AppNexus, the world leader in real-time advertising technology, Brian and his team are building the company to be the lynchpin of the display advertising industry, offering a highly scalable ad technology platform upon which other companies build their advertising businesses. Widely considered a visionary in online advertising, Brian O'Kelley created the first successful ad exchange as CTO of Right Media (acquired by Yahoo! for $850MM in July 2007) before co-founding AppNexus. An innovator throughout his career, Brian was CEO of Netamorphosis, an early social networking and e-commerce site, co-founder of Cetova, a web-based reporting and analytics platform for enterprise financial systems, and EVP at LogicSpan, a consulting and technology integration firm specializing in real-tim
Location: New York, NY, United States

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