Brian O'Kelley

Investment Stage

Focus Areas

About Investor

Brian O'Kelley is an advertising-technology entrepreneur and the co-founder and chief executive of Scope3. He previously founded AppNexus and has spent much of his career building infrastructure for digital advertising. His current work connects adtech with sustainability, data infrastructure, measurement, and the decarbonization of digital media. Their background is particularly relevant to founders building AI, machine-learning, data, and infrastructure products. They bring perspective on the technical and commercial challenges involved in turning complex technology into products that customers can adopt at scale. Their experience can be useful around product strategy, technical differentiation, enterprise adoption, hiring, and building defensible data or platform advantages. For founders, that combination of technical fluency and company-building experience can provide valuable context as an emerging technology moves from experimentation to a scalable business.