INDEX OF EXHIBITS Exhibit Number Description of Document Governing Documents 3.1 Certificate of Incorporation of the Company (filed as Exhibit 3.1 to the Company’s Registration Statement on Form S-1/A filed March 23, 2011 (File No. 333-171700), and incorporated herein by reference). 3.2 Memorandum of Association of the Company (filed as Exhibit 3.2 to the Company’s Registration Statement on Form S-1/A filed March 23, 2011 (File No. 333-171700), and incorporated herein by reference). 3.3 Bye-laws of the Company (filed as Exhibit 4 to the Company’s Registration Statement on Form 8-A filed May 6, 2011 (File No. 001-35167), and incorporated herein by reference). 4.1 Specimen share certificate (filed as Exhibit 4.1 to the Company’s Registration Statement on Form S-1/A filed April 25, 2011 (File No. 333-171700), and incorporated herein by reference). Operating Agreements Ghana 10.1 Petroleum Agreement in respect of West Cape Three Points Block Offshore Ghana dated July 22, 2004 among the GNPC, Kosmos Ghana and the E.O. Group (filed as Exhibit 10.1 to the Company’s Registration Statement on Form S-1/A filed March 3, 2011 (File No. 333-171700), and incorporated herein by reference). 10.2 Operating Agreement in respect of West Cape Three Points Block Offshore Ghana dated July 27, 2004 between Kosmos Ghana and E.O. Group (filed as Exhibit 10.2 to the Company’s Registration Statement on Form S-1/A filed March 3, 2011 (File No. 333-171700), and incorporated herein by reference). 10.3 Petroleum Agreement in respect of the Deepwater Tano Contract Area dated March 10, 2006 among GNPC, Tullow Ghana, Sabre and Kosmos Ghana (filed as Exhibit 10.3 to the Company’s Registration Statement on Form S-1/A filed March 3, 2011 (File No. 333-171700), and incorporated herein by reference). 10.4 Joint Operating Agreement in respect of the Deepwater Tano Contract Area, Offshore Ghana dated August 14, 2006, among Tullow Ghana, Sabre Oil and Gas Limited, and Kosmos Ghana (filed as Exhibit 10.4 to the Company’s Registration Statement on Form S-1/A filed March 3, 2011 (File No. 333-171700), and incorporated herein by reference). 10.5 Assignment Agreement in respect of the Deepwater Tano Block dated September 1, 2006, among Anadarko WCTP and Kosmos Ghana (filed as Exhibit 10.5 to the Company’s Registration Statement on Form S-1/A filed March 3, 2011 (File No. 333-171700), and incorporated herein by reference). 10.6 Unitization and Unit Operating Agreement covering the Jubilee Field Unit located offshore the Republic of Ghana dated July 13, 2009, among GNPC, Tullow, Kosmos Ghana, Anadarko WCTP, Sabre and E.O. Group (filed as Exhibit 10.6 to the Company’s Registration Statement on Form S-1/A filed March 3, 2011 (File No. 333-171700), and incorporated herein by reference). 165