EXHIBIT 11.1 (1 OF 2) CASTLE ENERGY CORPORATION STATEMENT OF COMPUTATION OF EARNINGS PER SHARE (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) (UNAUDITED) YEAR ENDED SEPTEMBER 30, ---------------------------------------------------------- 2004 2003 --------------------------- ---------------------------- BASIC DILUTED BASIC DILUTED ------------ ------------ ------------ ------------ I. Shares Outstanding, Net of Treasury 6,592,884 6,592,884 6,592,884 6,592,884 Stock purchased and options exercised during the period .............................. 82,654 82,654 ------------ ------------ ------------ ------------ Stock, net ...................................... 6,675,538 6,675,538 6,592,884 6,592,884 Purchase of treasury stock (weighted) ........... ------------ ------------ ------------ ------------ 6,675,538 6,675,538 6,952,884 6,952,884 II. Weighted Equivalent Shares: Assumed options and warrants exercised .......... 257,744 ------------ ------------ ------------ ------------ III. Weighted Average Shares and Equivalent Shares ..... 6,675,538 6,933,282 6,592,884 6,592,884 ============ ============ ============ ============ IV. Net Income (Loss) ................................. $ 13,620 $ 13,620 $ (2,001) $ (2,001) ============ ============ ============ ============ V. Net Income (Loss) Per Share ....................... $ 2.04 $ 1.96 $ (.30) $ (.30) ============ ============ ============ ============ EXHIBIT 11.1 (2 OF 2) CASTLE ENERGY CORPORATION STATEMENT OF COMPUTATION OF EARNINGS PER SHARE (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) (UNAUDITED) YEAR ENDED SEPTEMBER 30, ---------------------------------------------------------- 2004 2003 --------------------------- ---------------------------- BASIC DILUTED BASIC DILUTED ------------ ------------ ------------ ------------ I. Shares Outstanding, Net of Treasury 6,720,384 6,720,384 6,592,884 6,592,884 Stock purchased and options exercised during the period .............................. 22,800 22,800 ------------ ------------ ------------ ------------ Stock, net ...................................... 6,743,184 6,743,184 6,592,884 6,592,884 Purchase of treasury stock (weighted) ........... ------------ ------------ ------------ ------------ 6,743,184 6,743,184 6,592,884 6,592,884 II. Weighted Equivalent Shares: Assumed options and warrants exercised .......... 296,064 ------------ ------------ ------------ ------------ III. Weighted Average Shares and Equivalent Shares ..... 6,743,184 7,039,248 6,592,884 6,592,884 ============ ============ ============ ============ IV. Net Income (Loss) ................................. $ (13) $ (13) $ (2,001) $ (2,001) ============ ============ ============ ============ V. Net Income (Loss) Per Share ....................... $ (.00) $ (.00) $ (.30) $ (.30) ============ ============ ============ ============