Berkshire Hathaway Inc. (Berkshire) is a holding company owning subsidiaries engaged in a number of diverse business activities. The Company is engaged in insurance businesses conducted on both a primary basis and a reinsurance basis. Berkshire also owns and operates a number of other businesses engaged in a variety of activities. On December 30, 2011, Medical Protective Corporation (MedPro) acquired 100% of the Princeton Insurance Company. During the year ended December 31, 2011, Acme Building Brands (Acme) acquired the assets of Jenkins Brick Company, the brick manufacturer in Alabama. In June 2012, Media General, Inc. sold 63 daily and weekly newspapers to World Media Enterprises, Inc., a subsidiary of Berkshire. In July 2012, Berkshire�s The Lubrizol Corporation acquired Lipotec SA. In May 2013, Berkshire Hathaway Inc acquired the remaining 20% stake in IMC International Metalworking Companies BV.