Ildar Shar is a co-founder of StackAdapt. He started the Toronto company in 2013 with Vitaly Pecherskiy, who is CEO, and Yang Han.
StackAdapt is a self-serve platform where marketers buy native, video and connected-TV ads in one place. It competes with large rivals such as The Trade Desk, Google and Amazon.
In 2022 Summit Partners invested $300m. In February 2025 Teachers' Venture Growth led a $235m round at a valuation near $2.5bn.
The company is privately held. Its total funding across the 2022 and 2025 rounds is over $535m.