13MAR201817230241 The following graph illustrates changes over the five-year period ended December 31, 2017, in cumulative total stockholder return on our common shares as measured against the cumulative total return of the S&P 500 Index and the Dow Jones U.S. Exploration & Production Index. The graph tracks the performance of a $100 investment in our common shares and in each index (with the reinvestment of all dividends). $250 $200 $225 $150 $175 $125 $100 $75 $50 $25 $0 2012 2013 2017 2016 2015 2014 Kosmos Energy Ltd. (KOS) Dow Jones U.S. Exploration & Production Index (DWCEXP) S&P 500 (SPX) December 31, 2012 2013 2014 2015 2016 2017 Kosmos Energy Ltd. (KOS) . . . . . . . . . . . $100.00 $ 90.53 $ 67.94 $ 42.11 $ 56.76 $ 55.47 S&P 500 (SPX) . . . . . . . . . . . . . . . . . . . . 100.00 132.37 150.48 152.55 170.78 208.05 Dow Jones U.S. Exploration & Production Index (DWCEXP) . . . . . . . . . . . . . . . . 100.00 131.17 114.81 87.02 109.40 109.70 Item 6. Selected Financial Data The following selected consolidated financial information set forth below as of and for the five years ended, December 31, 2017, should be read in conjunction with ‘‘Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations’’ and ‘‘Item 8. Financial Statements and Supplementary Data.’’ 75