Investor Presentaiton

Rio Del Rey Petroleum System Cameroon - near-term drilling opportunity • Extension of a Proven Offshore Play - - Deepwater Tertiary trend onshore Analogous to >1BBoe Alba oil and natural gas condensate field offshore • Built Substantial Acreage Position - - 720 K gross acres 100% WI, operated by KOS • First Prospect to Spud Late 2012 • Multiple Follow-On Opportunities Oil Field KOSMOS ENERGY. Gas-Condensate Field Prospect CAMEROON NDIAN RIVER BLOCK (100%) Sipo FAKO NIGER DELTA BLOCK (100%) Miocene Deltaics Alba Sipo South Zafiro Bioko Island - 3 to 4 additional prospects TERTIARY PLAYS Miocene Turbidites 0.7 MM Gross Acres 60 km 30 miles Investor Presentation 13 November 2012

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