Kosmos Energy Ltd. Reports Impairment for the Fourth Quarter Ended December 31, 2023

Kosmos Energy Ltd. is a full cycle, deepwater, independent oil and gas exploration and production company focused along the offshore Atlantic Margins. Its key assets include production offshore Ghana, Equatorial Guinea and the United States Gulf of Mexico, as well as gas projects offshore Mauritania and Senegal. The Company has operations in four geographic reporting segments: Ghana, Equatorial Guinea, Mauritania/Senegal and the U.S. Gulf of Mexico. The West Cape Three Points and Deepwater Tano Blocks are located within the Tano Basin, offshore Ghana. This basin contains a petroleum system. The EG-01, EG-21, EG-24 and S blocks are located in the southern part of the Gulf of Guinea, in the Republic of Equatorial Guinea, west of the Rio Muni petroleum province. It covers approximately 7,500 square kilometers, and it has over 6,400 square kilometers of 3D seismic over the blocks. The C8 and BirAllah blocks are located on the western margin of the Mauritania Salt Basin offshore Mauritania.