Investor Presentaiton

Top Quartile Exploration Performance - Strategy and Execution KOSMOS ENERGY. Kosmos' exploration strategy is being executed with discipline, creating a balanced portfolio which has delivered top quartile success and provides a sustainable drilling program going forward • Strategy - Focus on south Atlantic margin, Cretaceous, deepwater petroleum systems Concentrated portfolio, rifle shot exploration drilling Execution - - Contrarian, technical ideas and countercyclical business initiatives provide first mover advantage Investment through low price cycle takes advantage of better access opportunity and deflated costs Large, operated positions in selected basins provide significant potential and enable exploration risk to be managed Results - Concentrated, balanced, exploration portfolio with a mix of proven, emerging and frontier basins Top quartile historical record of success in opening frontier basins (1 in 5 commercial discovery rate) Exploration drilling success and active new ventures ensure a sustainable, exploration drilling program 2-3 wells each year going forward (e.g. 2018 Suriname, 2019 Mauritania/Senegal, Sao Tome, and Equatorial Guinea) 1. Source: Wood Mackenzie 2. Source: Richmond Energy Partners, data include frontier, deepwater exploration wells drilled from 2013-2017 Kosmos vs. Industry Exploration Activity 30,000 500 20,000 E Sq. Km. 10,000 Wells Drilled 16 12 8 4 0 400 300 200 2015 Kosmos Gross 2016 2017 Acreage Additions Kosmos Seismic Acquired Industry Offshore Exploration Wells1 100 0 Frontier Deepwater Exploration Wells, Discoveries, Success Rates 2013-20172 Kosmos Offshore Exploration Wells 25% 20% 15% 10% 5% 0% Commercial Success Rate Companies Commercial Discoveries Gross Exploration Wells 16 Commercial Success Rate

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