b'KOSMOS ENERGY LTD.Supplemental Quarterly Financial Information (Unaudited)Quarter EndedMarch 31, June 30, September 30, December 31,(In thousands, except per share data)2018Revenues and other income . . . . . . . . . . . . . . . . . . $127,177 $ 215,473 $ 250,219 $ 309,500Costs and expenses . . . . . . . . . . . . . . . . . . . . . . . . 201,751 364,091 364,912 22,475Net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . (50,226) (103,273) (126,057) 185,565Net income (loss) per share:Basic(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (0.13) (0.26) (0.31) 0.44Diluted(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (0.13) (0.26) (0.31) 0.432017Revenues and other income . . . . . . . . . . . . . . . . . . $151,966 $ 146,524 $ 151,242 $ 187,104Costs and expenses . . . . . . . . . . . . . . . . . . . . . . . . 158,630 131,252 216,162 308,647Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (28,841) (8,467) (63,405) (122,079)Net loss per share:Basic(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (0.07) (0.02) (0.16) (0.31)Diluted(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (0.07) (0.02) (0.16) (0.31)(1) The sum of the quarterly earnings per share information may not add to the annual earnings pershare information as a result of rounding.157'