EXHIBIT 11 OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2004 AND 2003 (Amounts in thousands, except per-share amounts) Three Months Ended Nine Months Ended September 30 September 30 ----------------------------------- ----------------------------------- 2004 2003 2004 2003 ================================================== =============== =============== =============== =============== BASIC EARNINGS PER SHARE Income after taxes $ 757,966 $ 445,689 $ 1,826,041 $ 1,213,127 Effect of repurchase of Trust Preferred Securities -- (22) -- (41) --------------- --------------- --------------- --------------- Income from continuing operations 757,966 445,667 1,826,041 1,213,086 Cumulative effect of changes in accounting principles, net -- 2 -- (68,428) --------------- --------------- --------------- --------------- Earnings applicable to common stock $ 757,966 $ 445,669 $ 1,826,041 $ 1,144,658 =============== =============== =============== =============== Basic shares Weighted average basic common shares outstanding 393,617 384,109 391,499 381,287 Issued, unvested restricted stock (14) (95) (14) (95) Vested, unissued restricted stock 863 330 863 330 Deferred shares 1,804 1,192 1,731 1,046 --------------- --------------- --------------- --------------- Basic shares outstanding 396,270 385,536 394,079 382,568 =============== =============== =============== =============== Basic earnings per share Income from continuing operations $ 1.91 $ 1.16 $ 4.63 $ 3.17 Cumulative effect of changes in accounting principles, net -- -- -- (.18) --------------- --------------- --------------- --------------- Basic earnings per common share $ 1.91 $ 1.16 $ 4.63 $ 2.99 =============== =============== =============== =============== DILUTED EARNINGS PER SHARE Earnings applicable to common stock $ 757,966 $ 445,669 $ 1,826,041 $ 1,144,658 =============== =============== =============== =============== Diluted shares Basic shares outstanding 396,270 385,536 394,079 382,568 Dilutive effect of exercise of options 5,628 4,403 4,661 3,585 outstanding Issued, unvested restricted shares 14 95 14 95 Deferred, restricted stock 1,340 1,096 1,017 761 --------------- --------------- --------------- --------------- Diluted shares 403,252 391,130 399,771 387,009 =============== =============== =============== =============== Diluted earnings per share Income from continuing operations $ 1.88 $ 1.14 $ 4.57 $ 3.14 Cumulative effect of changes in accounting principles, net -- -- -- (.18) --------------- --------------- --------------- --------------- Diluted earnings per common share $ 1.88 $ 1.14 $ 4.57 $ 2.96 ================================================== =============== =============== =============== =============== There were no antidilutive options for any of the periods presented above.