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Zach Coelius
Managing Partner at Coelius Capital
Early-stage venture investing through Coelius Capital
DealmakerSan Francisco, California, United States18+ years in industry
Last updated May 31, 2026 by the ATDb Editorial Team · Connections updated May 31, 2026
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
Employee / Integration Lead (Post-Acquisition)
Facebook (2015-2016)
Founder & CEO
Triggit (2006-2015)
Expertise
Programmatic AdvertisingReal-Time Bidding (RTB)Demand-Side Platforms (DSP)Angel InvestingAdTech InfrastructureMarketing Technology (MarTech)Customer Data PlatformsAttribution
Education
- University of California, Berkeley
Notable Achievements
- Founded Triggit, one of the first demand-side platforms and real-time bidding innovators in programmatic advertising
- Led Triggit to acquisition by Facebook in 2015
- Built a portfolio of dozens of AdTech and MarTech angel investments post-Facebook
- Recognized as an early pioneer in the programmatic advertising ecosystem
Speaking Topics
Programmatic Advertising and Real-Time BiddingAdTech Startup StrategyAngel Investing in AdTech and MarTechThe Evolution of Digital Advertising
Connections