Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Page 79 Page 80 Page 81 Page 82 Page 83 Page 84 Page 85 Page 86 Page 87 Page 88 Page 89 Page 90 Page 91 Page 92 Page 93 Page 94 Page 95 Page 96 Page 97 Page 98 Page 99 Page 100 Page 101 Page 102 Page 103 Page 104 Page 105 Page 106 Page 107 Page 108 Page 109 Page 110 Page 111 Page 112 Page 113 Page 114 Page 115 Page 116 Page 117 Page 118 Page 119 Page 120 Page 121 Page 122 Page 123 Page 124 Page 125 Page 126 Page 127 Page 128 Page 129 Page 130 Page 131 Page 132 Page 133 Page 134 Page 135 Page 136 Page 137 Page 138 Page 139 Page 140 Page 141 Page 142 Page 143 Page 144 Page 145 Page 146 Page 147 Page 148 Page 149 Page 150 Page 151 Page 152 Page 153 Page 154 Page 155 Page 156 Page 157 Page 158 Page 159 Page 160 Page 161 Page 162 Page 163 Page 164 Page 165 Page 166 Page 167 Page 168 Page 169 Page 170 Page 171 Page 172 Page 173 Page 174 Page 175 Page 176 Page 177 Page 178 Page 179 Page 180 Page 181 Page 182Gross and Net Undeveloped and Developed Acreage The following table sets forth certain information regarding the developed and undeveloped portions of our license areas as of December 31, 2016 for the countries in which we currently operate. Developed Area Undeveloped Area (Acres) (Acres) Total Area (Acres) Gross Net(1) Gross Net(1) Gross Net(1) (In thousands) Ghana Jubilee Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 7 — — 27 7 TEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 19 — — 111 19 West Cape Three Points(2) . . . . . . . . . . . . . . . . . — — 101 31 101 31 Deepwater Tano(2) . . . . . . . . . . . . . . . . . . . . . . . — — 27 4 27 4 Mauritania Block C6(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,063 957 1,063 957 Block C8(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 2,220 1,998 2,220 1,998 Block C12(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,273 1,146 1,273 1,146 Block C13(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,452 1,307 1,452 1,307 Morocco (including Western Sahara) Boujdour Maritime . . . . . . . . . . . . . . . . . . . . . . . — — 8,336 4,585 8,336 4,585 Essaouira . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 2,171 1,628 2,171 1,628 Sao Tome and Principe Block 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 703 316 703 316 Block 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,241 559 1,241 559 Block 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 2,209 1,436 2,209 1,436 Block 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,738 782 1,738 782 Senegal Cayar Offshore Profond(4) . . . . . . . . . . . . . . . . . — — 1,350 810 1,350 810 Saint Louis Offshore Profond(4) . . . . . . . . . . . . . — — 1,650 990 1,650 990 Suriname Block 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,526 509 1,526 509 Block 45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — — 1,267 633 1,267 633 Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 26 28,327 17,691 28,465 17,717 (1) Net acreage based on Kosmos’ participating interest, before the exercise of any options or back-in rights, except for our net acreage associated with the Jubilee field, the TEN fields and Mahogany and Teak discoveries in the WCTP Block, which are after the exercise of options or back-in rights. Our net acreage in Ghana may be affected by any redetermination of interests in the Jubilee Unit. (2) The Exploration Period of the WCTP petroleum contract and DT petroleum contract has expired. The undeveloped area reflected in the table above represents acreage within our discovery areas that were not subject to relinquishment on the expiry of the Exploration Period. (3) In January 2017, we closed a farm-out agreement covering our four license areas in Mauritania with BP. The net acres shown do not reflect the farm-out, as the agreement was not closed as of December 31, 2016. After completing the farm-out agreement, our estimated net acres in Block C6, Block C8, Block C12 and Block C13 are 298 thousand acres, 622 thousand acres, 356 thousand acres and 407 thousand acres, respectively. (4) In February 2017, we completed a Sale and Purchase Agreement with BP which resulted in BP acquiring a 49.99% interest in Kosmos BP Senegal Limited, which is a controlled affiliate of Kosmos in which we own a 50.01% interest . Kosmos BP Senegal Limited owns a 65% participating interest in the Cayar Offshore Profond and Saint Louis Offshore Profond blocks. This participating interest gives effect to the completion of our exercise in December 2016 of an option to increase our equity in each contract area from 60% to 65% in exchange for carrying Timis 28