Exhibit 11.1 Castle Energy Corporation Statement of Computation of Earnings Per Share (Dollars in thousands, except per share amounts) (Unaudited) Three Months Ended December 31, ---------------------------------------------------------------- 2001 2000 ---------------------------- -------------------------- Basic Diluted Basic Diluted ----------- ----------- ---------- ---------- I. Shares Outstanding, Net of Treasury Stock Purchased and Options Exercised During the Period: Stock, net 6,632,884 6,632,884 6,718,884 6,718,884 Purchase of treasury stock (weighted) (38,480) (38,480) ----------- ----------- ---------- ---------- 6,632,884 6,632,884 6,680,404 6,680,404 II. Weighted Equivalent Shares: Assumed options and warrants exercised 120,746 219,229 ----------- ----------- ---------- ---------- III. Weighted Average Shares and Equivalent Shares 6,632,884 6,753,630 6,680,404 6,899,633 =========== =========== ========== ========== IV. Net Income (Loss) ($ 272) ($ 272) $ 1,110 $ 1,110 =========== =========== ========== ========== V. Net Income (Loss) Per Share ($ .04) ($ .04) $ .17 $ .16 =========== =========== ========== ==========