Sirius XM Radio (SIRI) CEO Mel Karmazin will step down as CEO of the company on February 1,...

|About: Sirius XM Holdings Inc. (SIRI)|By:, SA News Editor

Sirius XM Radio (SIRI) CEO Mel Karmazin will step down as CEO of the company on February 1, 2013. The exec will also leave the Board of Directors at that time. SIRI -1.1% AH.