The people
What they build
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Working at StackAdapt
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On the TechTO stage
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About
Pecherskiy and Shar came up with StackAdapt while working at WPP in Toronto, frustrated by the ad-buying platforms they had to use, and recruited Yang Han — then building real-time trading technology at Bloomberg — as the third co-founder. The company's own account puts the launch in 2014 in Toronto. The platform sells against the complexity of programmatic buying: exchanges, audience segments, bid strategies and reporting stacks that disagree with each other, collapsed into a single buying workflow, with machine learning doing the targeting. In February 2025 the Ontario Teachers' Pension Plan invested US$235 million, a deal reported as preparation for an eventual public listing; Pecherskiy has since taken over as chief executive. StackAdapt demoed the product on TechTO's MarketingTO stage in October 2018, in a Demo of the Month slot presented by a StackAdapt employee identified in the archive only as Eli.
Backers
The Ontario Teachers' Pension Plan invested US$235 million in February 2025. The founders raised less than $5 million from three investors in the early years, per the Globe and Mail's account.
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Quick answers
What does StackAdapt do?
It is a programmatic ad buying platform. Marketers and agencies use it to plan, buy and measure campaigns across native, display, video, connected TV, digital out-of-home and audio from a single interface.
Who founded StackAdapt?
Ildar Shar, Vitaly Pecherskiy and Yang Han. Shar and Pecherskiy met at WPP in Toronto; Han joined from Bloomberg. Pecherskiy is now chief executive.
Who owns StackAdapt?
It remains private. The Ontario Teachers' Pension Plan invested US$235 million in February 2025, reported as a step toward a future public listing.
When did StackAdapt appear at TechTO?
October 2018, in the Demo of the Month slot at MarketingTO, where a StackAdapt employee walked through the buying workflow live.