Cumulus Media Inc is a radio broadcasting company combining high-quality local programming with iconic, nationally syndicated media, sports and entertainment brands to deliver premium content choices to its customers and radio stations affiliated with Westwood One network and numerous digital channels. Its segments include the Cumulus Radio Station Group and Westwood One. Cumulus Radio Station Group operates in the sale of broadcasting time to local, regional, and national advertisers. Westwood One operates through network advertising. The company's revenue is derived mainly from the sale of commercial airtime to local and national advertisers.