Investor Presentaiton

Kosmos: Stronger Portfolio, More Balanced Growth KOSMOS ENERGY. Leveraged the downturn to our advantage, built a balanced production, development and exploration portfolio 1. 2. 3. 4. - - - High-margin production assets delivering growth ~$40 operating cash margin at $60 Brent in 20181 Low-cost, competitively positioned Tortue gas project provides next phase of growth 15 Tcf resource base supports development of 10 mmtpa scheme On plateau, 10 mmtpa scheme would be expected to generate substantial, steady long-term annual cash flow $533mm BP development carry funds substantial portion of Kosmos share of initial phase (2.5 mmtpa), establishing infrastructure for full development and providing early cash flow 20 Tcf discovered resource base in Yakaar/Teranga adds potential for second hub Sustainable exploration program with balance of proven, emerging, and frontier basins offering multiple catalysts in 2018, 2019, and beyond (2-3 wells/year) Proven: Short cycle tie-back (Equatorial Guinea) Emerging: Prove up plays with follow on opportunity (Mauritania, Senegal, Suriname) Frontier: Capture significant position in petroleum system to fully explore (Sao Tome & Principe, Cote d'Ivoire) Strong balance sheet supports strategy execution Low leverage of less than 2.0x net debt / EBITDAX 1. Operating cash margin defined as Brent price less opex and cash taxes for Ghana and Equatorial Guinea 4

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