Former NBC sales chief Marianne Gambelli is joining Horizon Media as executive vice president-Chief Investment Officer, succeeding long-time buying chief Aaron Cohen, who will move into a a
"senior advisory role" in the company reporting directly to President, CEO & Founder Bill Koenigsberg. Gambelli stepped down as president of sales for NBC last fall, following the consolidation of
NBCUniversal's broadcast and cable network ad sales under Linda Yaccarino.