In February 2018, the governments of Mauritania and Senegal signed an Inter-Governmental Cooperation Agreement (‘‘ICA’’) which enables the development of the cross-border Tortue natural gas field to continue moving forward. (4) Our paying interest on development activities in the TEN fields is 19%. (5) Our paying interest on development activities in this discovery is 26.9%. Our participating interest as of December 31, 2017 is 30.0%. The WCTP partners transferred operatorship of the remaining portions of the WCTP Block, including the Akasa discovery, to Tullow effective February 1, 2018. Kosmos continues to assist Tullow with the transition process, which is expected to extend into the first half of 2018. (6) GNPC has the option to acquire additional paying interests in a commercial discovery on the WCTP Block and the DT Block of 2.5% and 5.0%, respectively. These interest percentages do not give effect to the exercise of such options. (7) SMHPM has the option to acquire up to an additional 4% paying interests in a commercial development. These interest percentages do not give effect to the exercise of such option. (8) PETROSEN has the option to acquire up to an additional 10% paying interests in a commercial development on the Saint Louis Offshore Profond and Cayar Offshore Profond blocks. The interest percentage does not give effect to the exercise of such option. (9) Kosmos owns a 50% interest in KTIPI which holds an 85% interest in the Ceiba Field and Okume Complex through its wholly-owned subsidiary, Kosmos-Trident Equatorial Guinea Inc. (‘‘KTEGI’’), representing a 40.375% net indirect interest to Kosmos. Kosmos and Trident provide operational management and support to KTEGI, who is operator of the Ceiba Field and Okume Complex. 14