NK Rosneft� OAO (Oil Company Rosneft OJSC) is a Russia-based company engaged in exploration, development, production and sale of crude oil and gas, as well as refining, transportation and sale of petroleum products. The Company has three business segments. The exploration and production segment is engaged in field exploration and development, and production of crude oil and natural gas. The refining, marketing and distribution segment is engaged in processing crude oil and other hydrocarbons into petroleum products, as well as the purchase, sale and transportation of oil and oil products. It operates through 13 representative offices and one branch, located domestically and abroad, including China and United Arab Emirates, among others. As of December 31, 2011, the Company�s major shareholder was Rosneftegaz OAO with a stake of 75.16%. In March 2013, the Company acquired a 100% stake in TNK-BP Holding OAO. In April 2013, the Company consolidated a 100% stake in Elvary Neftegaz ZAO.