Exxon Shares Continue Higher Following News Co. to Explore Offshore Liberia Block 13

Exxon Mobil Corporation

announced today that its Liberian affiliate has acquired from Canadian Overseas Petroleum (Bermuda) Ltd. (COPL) 80 percent interest in Liberia Block 13 (LB-13), comprising more than 625,000 acres (2,500 square kilometers) offshore Liberia in water depths ranging from 250 to 10,000 feet (75 to 3,000 meters). ExxonMobil Exploration and Production Liberia Limited and COPL received final approval of the transaction from the Liberia national legislature and Liberia President Ellen Johnson Sirleaf. The transaction closed on April 5, 2013. ExxonMobil is the operator of LB-13. COPL has 20 percent interest in LB-13.