TransGlobe Energy Corporation (TransGlobe) is an independent international upstream oil and gas company. TransGlobe is engaged in the exploration for and the development and production of crude oil and natural gas in Egypt and Yemen. It operates in two segments: the Arab Republic of Egypt and the Republic of Yemen. During the year ended December 31, 2011, its primary focuses had been on five concessions in Egypt (a 71.43% working interest in Nuqra Block 1, a 100% working interest in the West Gharib Concession, a 100% working interest in West Bakr Concession, and a 50% working interest in the East Ghazalat Concession. On December 29, 2011, it acquired 100% working interest in the West Bakr Concession agreement. On July 26, 2012, it acquired the shares of Cepsa Egypt SA B.V. (Cepsa Egypt), a wholly owned subsidiary of COMPANIA ESPANOLA DE PETROLEOS, S.A.U., which holds a 50% working interest in the South Alamein Concession.