Westwood One is an American radio network owned by Cumulus Media. The company syndicates talk, music, and sports programming. The company takes its name from an earlier network also named Westwood One, a company founded in 1978. The company was, at various times, managed by CBS Radio, the radio arm of CBS Corporation and Viacom. It was later purchased by the private equity firm The Gores Group before merging with Dial Global in 2011. In December 2013, Dial Global was, in turn, acquired by Cumulus Media. Prior to the sale's completion, Dial Global re-assumed the Westwood One name. After the completion of the purchase, Westwood One was merged into the Cumulus Media Networks division (the former ABC Radio Networks).