Investor Presentaiton

Proven Basin Exploration - Equatorial Guinea KOSMOS ENERGY. Nearfield exploration in the proven, but underexplored Rio Muni basin includes lower risk, short- cycle time, high-value, tie-back exploration opportunities to the Ceiba /Okume facilities • Underexplored opportunity involves three primary Cretaceous fairways 50 km 40 miles - Infield/nearfield • ■ Campanian upper slope/channel play fairway and deeper, Santonian and Albian potential underlying the producing fields ■ Multiple leads/prospects identified. Step-out ■ Potential mid-late Cretaceous mid-slope channel systems downdip and along trend Standalone ■ Outboard lower slope play fairways Plan to acquire new 3D seismic this year ahead of high grading opportunity set for drilling starting in late 2019 Infield/Near-field Step-out exploration /BLOCK W Standalone EG-21 Okume Ceiba BLOCK S EQUATORIAL GUINEA Regional 3D seismic survey 17

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