Fox News Taps Horizon Media’s Marianne Gambelli as New Ad Sales Chief

She'll also oversee sales for Fox Business beginning May 22

One of 21st Century Fox’s two ad sales chief vacancy has been filled. Fox News has picked Marianne Gambelli, Horizon Media’s chief investment officer, to replace Paul Rittenberg, who announced last February he would be stepping down after more than two decades on the job. As president of advertising sales, she’ll oversee sales for Fox News Channel and Fox Business Network and start on May 22.