Exploration License Areas Operator (Participating Interest) Partners (Participating Interest) Cote D’Ivoire Block CI-526 . . . . . . . . . . Kosmos (45%)(1) BP (45%), PETROCI (10%) Block CI-602 . . . . . . . . . . Kosmos (45%)(1) BP (45%), PETROCI (10%) Block CI-603 . . . . . . . . . . Kosmos (45%)(1) BP (45%), PETROCI (10%) Block CI-707 . . . . . . . . . . Kosmos (45%)(1) BP (45%), PETROCI (10%) Block CI-708 . . . . . . . . . . Kosmos (45%)(1) BP (45%), PETROCI (10%) Equatorial Guinea Block EG-21 . . . . . . . . . . Kosmos (40%)(2) Trident (40%), GEPetrol (20%) Block S . . . . . . . . . . . . . . Kosmos (40%)(2) Trident (40%), GEPetrol (20%) Block W . . . . . . . . . . . . . Kosmos (40%)(2) Trident (40%), GEPetrol (20%) Mauritania Block C6 . . . . . . . . . . . . . BP (62%)(3) Kosmos (28%), SMHPM (10%) Block C8 . . . . . . . . . . . . . BP (62%)(3) Kosmos (28%), SMHPM (10%) Block C12 . . . . . . . . . . . . BP (62%)(3) Kosmos (28%), SMHPM (10%) Block C13 . . . . . . . . . . . . BP (62%)(3) Kosmos (28%), SMHPM (10%) Block C18 . . . . . . . . . . . . Total (45%)(3) Kosmos (15%), BP (15%), Tullow (15%), SMHPM (10%) Morocco Essaouira . . . . . . . . . . . . . Kosmos (75%) ONHYM (25%) Sao Tome and Principe(4) Block 5 . . . . . . . . . . . . . . Kosmos (45%) Galp (20%), Equator (20%), ANP (15%), Block 6 . . . . . . . . . . . . . . Galp (45%) Kosmos (45%), ANP (10%) Block 11 . . . . . . . . . . . . . Kosmos (65%) Galp (20%), ANP (15%) Block 12 . . . . . . . . . . . . . Kosmos (45%) Galp (20%), Equator (22.5%), ANP (12.5%), Senegal Cayar Offshore Profond . . BP (60%)(5) Kosmos (30%), PETROSEN (10%) Saint Louis Offshore Profond . . . . . . . . . . . . BP (60%)(5) Kosmos (30%), PETROSEN (10%) Suriname Block 42 . . . . . . . . . . . . . Kosmos (33%) Chevron (33%), Hess (33%) Block 45 . . . . . . . . . . . . . Kosmos (50%) Chevron (50%) (1) PETROCI has the option to acquire up to an additional 2% paying interests in a commercial development. The interest percentage does not give effect to the exercise of such option. (2) These agreements are fully executed, but are pending Presidential ratification. We presently have an 80% interest and are the operator in all three blocks, but pursuant to an agreement with Trident we expect to assign a 40% interest in the blocks to an affiliate of Trident after presidential ratification. The interest percentage gives effect to the 40% interest assignment to Trident. Should a commercial discovery be made, GEPetrol’s 20% carried interest will convert to a 20% participating interest for all development and production operations. (3) BP is the operator of record while Kosmos provides technical exploration operator services. Should a commercial discovery be made, SMHPM’s 10% carried interest is extinguished and SMHPM will have an option to acquire a participating interest in the discovery area between 10% and 14% (blocks C8, C12 and C13), 10% and 15% (Block C18) and 10% and 18% (Block C6). SMHPM will pay its portion of development and production costs in a commercial development on the blocks. The interest percentage does not give effect to the exercise of such option. 15