The Payments to Government data are reflective of direct payments made to government entities by Kosmos Energy - with the exception of payments reported for KTEGI as explained separately. These payments are categorized consistent with the Report on Payments to Governments Regulations 2014 (as amended in December 2015). These regulations enact domestic rules in line with Directive 2013/34/EU (the EU Accounting Directive (2013). Please see the footnotes below for further detail on the payments we made to our host country governments in 2018. 1.  Our project-level and receiving-entity level disclosures are available on our website at www.kosmosenergy.com/responsibility/transparency.php. 2.  Represents payments made directly to government for satisfaction of obligations per the Petroleum Agreements and/or Petroleum Sharing Contracts (PSCs), as applicable. In addition to the numbers above, Kosmos made payments to third party training providers and/or national oil company employees in accordance with training obligations per the PSCs totaling $33,000 for Morocco, $464,115 in Sao Tome and Principe, and $300,000 in Equatorial Guinea. 3.  Primarily local payroll-related taxes and withholding taxes on interest payments as well as property taxes paid on pipe and tangible goods inventory stored at various onshore locations in the United States. These values are exclusive of withholding taxes remitted on behalf of service providers. In addition to the numbers above, Kosmos made payments to Chef du Bureau de Recouvrement of $4.2 million representing W/H tax for services performed outside of Senegal but which were taxable in Senegal. 4. In addition to this, Kosmos Energy paid the UK government $450K in income tax payments during 2018. 5.  Primarily relates to donations made to the Ministry of Energy in Ghana and Staatsolie in Suriname and payment to Petroci in Cote d’Ivoire to acquire seismic data. 6.  Royalties are paid to the Government of Ghana in barrels of oil out of Kosmos’ working interest share of production. Based on the annual average of daily Brent prices in 2018 of $71.31, this is worth approximately $38.7 million. United States amounts above are determined based on actual sales price. 7.  In late 2017, through a joint venture with an affiliate of Trident Energy, Kosmos Energy acquired all of the equity interest of an entity subsequently renamed Kosmos-Trident Equatorial Guinea, Inc. (KTEGI), which holds an 85% paying interest in the Ceiba Field and Okume Complex assets in Equatorial Guinea (Block G). Figures in the table represent Kosmos Energy’s indirect 50% participating interest in KTEGI’s payments to the government during 2018. 8.  Royalties are paid to the Republic of Equatorial Guinea in barrels of oil out of Kosmos’ working interest share of production. Production entitlements are paid to the Republic of Equatorial Guinea in barrels of oil based on their participating interest. Production entitlements amounts disclosed above represent Kosmos’ participating share received by the Republic of Equatorial Guinea. Based on the annual average of daily Brent prices in 2018 of $71.31, the estimated value of royalties were approximately $53.7 million and the estimated value of production entitlements were valued at $69.1 million in Equatorial Guinea. ENVIRONMENT The Environment data presented in this report is for Kosmos operated assets only. Waste and air emissions are measured in tons, with greenhouse gas emissions measured in metric tons of CO2 equivalent. The data represents drilling rigs as well as seismic and support vessels. In 2018, Kosmos drilled exploration wells offshore Senegal and Suriname, conducted seismic surveys offshore Equatorial Guinea and Western Sahara, and completed a geophysical and geotechnical study offshore Morocco. 2018 Performance Data (continued) 64 65 Cote d'Ivoire Equatorial Guinea Ghana Mauritania Morocco São Tomé & Príncipe Senegal Suriname United States Income Taxes4 — — 44,629,000 — 1,000 — — — 881,000 Royalties (bbls)6 — — 542,877 — — — — — 596,041 Estimated Royalties ($s)6 — — 38,713,000 — — — — — 36,766,000 Dividends — — — — — — — — — Bonuses 3,758,000 6,000,000 — — — 4,118,000 — — 5,325,000 License Fees (Surface Rentals, Permitting Fees, etc) — 121,000 30,000 — — — — — 571,000 Envt, Capacity Building & Social Projects2 1,250,000 300,000 — 72,000 — — — — — Training2 750,000 458,000 175,000 — 63,000 184,000 — — — Taxes (Non-Income)3 — — 1,853,000 778,000 344,000 66,000 898,000 867,000 1,244,000 Other5 314,000 — 32,000 — — — — 25,000 — TOTAL 6,072,000 6,879,000 85,432,000 850,000 407,000 4,368,000 898,000 892,000 44,787,000 2018 Equatorial Guinea Morocco Senegal Suriname Western Sahara WASTE (TONS) Hazardous 60.25 111.34 164.65 1,182.15 116.64 Non-Hazardous 356.68 61.94 75.44 622.26 407.22 TOTAL 416.93 173.28 240.09 1,804.41 523.86 Recycled/Reused/Treated 37% 20% 42% 50% 24% AIR EMISSIONS (TONS) Carbon Dioxide (CO2) 74,022.86 1,735.20 40,810.36 116,489.39 57,214.87 Mono-Nitrogen Oxides (NOx) 1,374.04 32.21 757.54 2,162.51 1,062.06 Sulfur Dioxide (SOx) 92.52 2.17 51.02 145.69 71.53 Methane (CH4) 4.17 0.1 2.29 6.67 3.23 Volatile Organic Compounds (VOCS) 46.27 1.08 25.50 72.98 35.76 Greenhouse Gases (GHGS) 75,488.47 1,769.80 40,858.44 116,629.46 58,346.76 OTHER Fines and Penalties 0 0 0 0 0 Freshwater Use (m3 ) 1,260.00 225.00 5,987.80 16,300.00 352.00 Hydrocarbon or Non-Aqueous Drilling Fluid Spills 0 0 0 0 0 PAYMENTS TO GOVERNMENTS (USD)1 Kosmos Energy Ltd. has prepared the following consolidated report in respect of payments made to governments for the year ended 31 December 2018 in accordance with the Reports on Payments to Governments Regulations 2014 (2014/3209) as amended by the Reports on Payments to Governments (Amendment) Regulations 2015 (2015/1928) and DTR 4.3A of the Financial Conduct Authority’s Disclosure and Transparency Rules. 2016 2017 Mauritania Senegal Suriname Mauritania Senegal Suriname Morocco Western Sahara São Tomé & Príncipe WASTE (TONS) Hazardous 298.67 112.44 10.54 830.25 319.06 2.37 N/A N/A 144.13 Non-Hazardous 296.80 114.11 82.90 412.65 135.96 6.56 N/A N/A 862.31 TOTAL 595.47 226.55 93.44 1,242.90 455.02 8.93 N/A N/A 1,006.44 Recycled/Reused/Treated 54% 43% 10% 45% 62% 85% N/A N/A N/A AIR EMISSIONS (TONS) Carbon Dioxide (CO2) 51,893.95 20,815.17 20,530.75 118,930.15 54,458.17 8,113.02 20,881.64 15,498.28 111,361.28 Mono-Nitrogen Oxides (NOx) 964.32 387.47 381.10 2,207.86 1,010.78 150.60 387.62 287.68 2,067.15 Sulfur Dioxide (SOx) 64.80 25.96 25.66 148.67 68.11 10.15 26.10 19.38 139.20 Methane (CH4) 2.88 1.13 11.55 6.63 2.99 0.46 1.18 0.87 6.27 Volatile Organic Compounds (VOCS) 32.50 13.00 12.83 74.23 33.67 5.06 13.06 9.69 69.60 Greenhouse Gases (GHGS) 51,954.43 20,838.84 20,773.30 119,069.33 54,521.26 8,122.64 20,906.44 15,516.50 111,492.87 OTHER Fines and Penalties 0 0 0 0 0 0 0 0 0 Freshwater Use (m3 ) 1,728.00 3,082.00 3,744.00 26,799.25 6,159.20 N/A N/A N/A 7,012.00 Hydrocarbon or Non-Aqueous Drilling Fluid Spills 0 0 0 0 0 0 0 0 0 KTEGI (Equatorial Guinea)7 Production Entitlements (bbls)6 969,000 Estimated Production Entitlements ($s)6 69,099,0008 Income Taxes4 37,670,000 Royalties (bbls)6 753,000 Estimated Royalties ($s)6 53,696,0008 License Fees (Surface Rentals, Permitting Fees, etc) 25,000 Taxes (Non-Income)3 117,000 TOTAL 160,607,000 PAYMENTS TO GOVERNMENTS KTEGI (USD)1