Brian O’Kelley, Co-founder and CEO, AppNexus
It was 2012 when Brian O’Kelley made Crain’s list of 40 Under 40 (he’d actually still be eligible for the list today), having co-founded and built online ad exchange AppNexus into a world leader in real-time display advertising, offering a highly scalable ad technology platform upon which other companies build their ad businesses.
But never mind 40 Under 40. O’Kelley is also credited with having created the first lucrative ad exchange, as CTO for Right Media, which was acquired by Yahoo in 2007 for $850 million, at which point he himself became a millionaire – and he was under the age of 30.
O’Kelley is also an active investor in and early-stage advisor to dozens of adtech companies, including Invite Media (bought by Google), MediaMath, Media6Degrees and Solve Media.
Oh, and in case you missed it, AppNexus just raised a $60 Million Series E.
Fun fact: He used to be in a band.
Keep up with Brian:
Image credit: CC by IAB UK