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Sumner M. Redstone serves as Chairman of the Board of both Viacom and CBS Corporation, roles he assumed after the separation of Viacom into two publicly traded companies, which occurred at the end of 2005. Mr. Redstone is the controlling shareholder of both companies. Prior to the separation, Mr. Redstone had served as Chairman of the Board of Viacom since June 1987 and Chief Executive Officer of Viacom since January 1996. He became Chairman of the Board of Viacom when National Amusements, Inc. acquired a controlling interest in the New York-based company. Mr. Redstone has been Chairman of the Board of National Amusements since 1986, and Chief Executive Officer of National Amusements since July 1967. He was President of National Amusements from July 1967 to December 1999. | 