Exhibit Number Description of Document 10.61 Joinder Agreement to the Registration Rights Agreement, dated as of May 10, 2011, among Kosmos Energy Ltd. and the other parties signatory thereto (filed as Exhibit 10.33 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2012, and incorporated herein by reference). 10.62 Amendment No. 1 to the Registration Rights Agreement, dated as of February 8, 2013, among Kosmos Energy Ltd. and the other parties signatory thereto (filed as Exhibit 10.34 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2012, and incorporated herein by reference). Management Contracts/Compensatory Plans or Arrangements 10.63† Long Term Incentive Plan (filed as Exhibit 99.1 to the Company’s Registration Statement on Form S-8 filed May 16, 2011 (File No. 333-174234), and incorporated herein by reference). 10.64† Long Term Incentive Plan (amended and restated as of January 23, 2015) (filed as Exhibit 99 to the Company’s Registration Statement on Form S-8 filed October 2, 2015 (File No. 333-207259), and incorporated herein by reference). 10.65† Long Term Incentive Plan (amended and restated as of January 23, 2017) (filed as Exhibit 10.64 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, and incorporated herein by reference). 10.66† Annual Incentive Plan (filed as Exhibit 10.22 to the Company’s Registration Statement on Form S-1/A filed March 30, 2011 (File No. 333-171700), and incorporated herein by reference). 10.67† Form of Restricted Stock Award Agreement (Service-Vesting) (filed as Exhibit 10.50 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014, and incorporated herein by reference). 10.68† Form of Restricted Stock Award Agreement (Performance-Vesting) (filed as Exhibit 10.51 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014, and incorporated herein by reference). 10.69† Form of RSU Award Agreement (Service-Vesting) (filed as Exhibit 10.52 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014, and incorporated herein by reference). 10.70† Form of RSU Award Agreement (Performance-Vesting) (filed as Exhibit 10.13 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2015, and incorporated herein by reference). 10.71† Form of Directors RSU Award Agreement (Service-Vesting) (filed as Exhibit 10.54 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014, and incorporated herein by reference). 10.72† Offer Letter, dated November 2, 2014, between Kosmos Energy, LLC and Michael Anderson (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, and incorporated herein by reference). 10.73† Offer Letter, dated September 1, 2011, between Kosmos Energy, LLC and Jason Doughty (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014, and incorporated herein by reference). 172