Melvin Alan "Mel" Karmazin (born August 24, 1943) is an American executive. He co-founded and was the president of Infinity Broadcasting (formally known as CBS Radio now Entercom) and eventually became the president and CEO of CBS television . From 2004–2012, he was the CEO of Sirius Radio (re-branded Sirius XM Radio after XM merged with Sirius in 2008). In October 2012, Karmazin announced that he would be stepping down on February 1, 2013. Upon his departure, John C. Malone took over Karmazin's role at SiriusXM.