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, ------------------------------------------------------------------- 2003 2002 ------------------------------ --------------------------------- Basic Diluted Basic Diluted --------------- -------------- ---------------- ---------------- I. Shares Outstanding, Net of Treasury Stock Purchased and Options Exercised During the Period: Stock, net 6,592,884 6,592,884 6,632,884 6,632,884 Purchase of treasury stock (weighted) (3,508) (3,508) ----------- ----------- ----------- ----------- 6,592,884 6,592,884 6,629,376 6,629,376 II. Weighted Equivalent Shares: Assumed options and warrants exercised ----------- ----------- ----------- ----------- III. Weighted Average Shares and Equivalent Shares 6,592,884 6,592,884 6,629,376 6,629,376 =========== =========== =========== =========== IV. Net Income (Loss) ($ 2,001) ($ 2,001) ($ 1,844) ($ 1,844) =========== =========== =========== =========== V. Net Income (Loss) Per Share ($ .30) ($ .30) ($ .28) ($ .28) =========== =========== =========== =========== Exhibit 11.1 (2 of 2) Castle Energy Corporation Statement of Computation of Earnings Per Share (Dollars in thousands, except per share amounts) (Unaudited) Three Months Ended September 30, ------------------------------------------------------------------- 2003 2002 ------------------------------ --------------------------------- Basic Diluted Basic Diluted --------------- -------------- ---------------- ---------------- I. Shares Outstanding, Net of Treasury Stock Purchased and Options Exercised During the Period: Stock, net 6,592,884 6,592,884 6,632,884 6,632,884 Purchase of treasury stock (weighted) (13,912) (13,912) ----------- ----------- ----------- ----------- 6,592,884 6,592,884 6,618,972 6,618,972 II. Weighted Equivalent Shares: Assumed options and warrants exercised ----------- ----------- ----------- ----------- III. Weighted Average Shares and Equivalent Shares 6,592,884 6,592,884 6,618,972 6,618,972 =========== =========== =========== =========== IV. Net Income (Loss) ($ 862) ($ 862) ($ 1,620) ($ 1,620) =========== =========== =========== =========== V. Net Income (Loss) Per Share ($ .13) ($ .13) ($ .24) ($ .24) =========== =========== =========== ===========