Marianne Gambelli

Chief Investment Officer at Horizon Media

Marianne partners with Horizon Media’s senior leadership team to drive all offline media activation strategies. Her main priorities are to monetize client investments, seek out new and emerging technologies, develop new media research capabilities, and to develop multi-year and multi-platform media deals. Marianne also leads the creation of new revenue-generating media assets for the agency.

Prior to Horizon, Marianne spent twenty-two years at NBC Universal where she rose rapidly to head up all of NBC Universal’s advertising sales, marketing, strategic planning and multi-platform portfolio development. In this role, she led the strategic allocation of over $7 billion in media investments for NBCU. Marianne began her career on the agency side with Backer Spielvogel Bates and Grey Advertising.

Marianne is a highly recognized and respected industry leader and was recently included in Advertising Age’s List of 100 Most Influential Women in Advertising. A native New Yorker, she graduated from Pace University with a Bachelor of Business degree in Marketing. She currently lives in Westchester with her husband and their two children.