Tim Vanderhook

Tim Vanderhook is Co-Founder, Chairman, and Chief Executive Officer of Viant Technology (NASDAQ: DSP), the AI-powered programmatic advertising platform he co-founded with his brother Chris Vanderhook and took public in 2021.

Under Tim's leadership, Viant has become one of the fastest growing ad platforms in terms of revenue and market share growth, with more than 400 employees across eleven offices — and has evolved from a pioneering DSP into one of the most sophisticated and recognized platforms in the advertising technology landscape. Tim sets the strategic, financial, and product direction for the company, with a relentless focus on the kind of innovation that delivers measurable outcomes for advertisers.

Most recently, Tim architected the ViantAI platform, the industry's first fully autonomous advertising platform that unifies AI-driven planning, buying, optimization, and measurement into a single, seamless workflow. The platform has earned multiple industry honors for advancing advertiser efficiency and has positioned Viant at the forefront of the AI transformation reshaping modern marketing. Tim is also the author of foundational technology patents that helped establish digital advertising standards still in use across the industry today.

A serial entrepreneur with a proven track record of building category-defining businesses, Tim has raised private equity capital, executed numerous acquisitions, and co-founded XUMO, one of the largest ad-supported streaming services in the country, which was acquired by Comcast in 2020.

Tim is an avid sports fan and youth coach residing in Orange County, California with his wife Laura and their four children.