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Zach Coelius
Managing Partner at Coelius Capital
Early-stage venture investing through Coelius Capital
OperatorSan Francisco, California, United States15+ years in industry
Last updated Jun 11, 2026 by ATDb automated enrichment
Bio
Zach Coelius is Managing Partner at Coelius Capital, his current venture investment firm. He previously founded Triggit, one of the earliest demand-side platforms and a pioneer in real-time bidding and programmatic advertising, which was acquired by Facebook in 2015; following the acquisition, Coelius joined Facebook as an integration lead until 2016. He is recognized as a veteran operator and investor with deep roots in ad tech infrastructure.
Previous Roles
Integration Lead
Facebook (2015-2016)
Founder & CEO
Triggit (2005-2015)
Expertise
Programmatic AdvertisingReal-Time Bidding (RTB)Demand-Side Platforms (DSP)Ad Exchange InfrastructureVenture CapitalEarly-Stage InvestingAd Tech InfrastructurePerformance Marketing
Education
- BA, University of California, Berkeley
Notable Achievements
- Founded Triggit, one of the earliest demand-side platforms and a pioneer in real-time bidding technology
- Triggit acquired by Facebook in 2015, recognizing its programmatic advertising infrastructure
- Built Coelius Capital into an active early-stage venture fund with a focus on adtech and marketplace companies
- Recognized as one of the earliest operators to commercialize RTB at scale
Speaking Topics
Real-time bidding and programmatic advertising historyEarly-stage venture investingBuilding and scaling adtech startupsThe future of digital advertising infrastructure
Connections