Investor Presentaiton

2012 Exploration Upside in Ghana Testing material unrisked potential to Kosmos Okure Wawa - DEEPWATER TANO (18.0%) - - Turonian-aged interval beneath Enyenra Stratigraphy intersected in Enyenra-2A Pmean 250 MMBoe + Results expected 4Q12 KOSMOS DEEPWATER TANO (18.0%) DWT Sapele Jubilee ENERGY. Mahogany Enyenra Tweneboa Wawa Discovery ― Oil and gas-condensate Enyenra ― Turonian-aged reservoirs - Separate accumulation from TEN fields Potential tie-in to TEN development Tweneboa DEEPWATER TANO (18.0%) Okure Sapele = Ntomme - - Downdip and analogous to Mahogany and Jubilee discoveries Pmean 75 MMBoe ~ Results expected early 2013 Investor Presentation 10 November 2012

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