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, --------------------------------------------------------------- 2000 1999 --------------------------- -------------------------- Basic Diluted Basic Diluted ---------- ---------- ---------- ---------- I. Shares Outstanding, Net of Treasury Stock Purchased and Options Exercised During the Period: Stock, net 6,718,884 6,718,884 7,639,287 7,639,287 Purchase of treasury stock (weighted) (38,480) (38,480) (511,548) (511,548) ---------- ---------- ---------- ---------- 6,680,404 6,680,404 7,127,739 7,127,739 II. Weighted Equivalent Shares: Assumed options and warrants exercised 219,229 120,093 ---------- ---------- ---------- ---------- III. Weighted Average Shares and Equivalent Shares 6,680,404 6,899,633 7,127,739 7,247,832 ========== ========== ========== ========== IV. Net Income $ 1,110 $ 1,110 $ 259 $ 259 ========== ========== ========== ========== V. Net Income Per Share $ .17 $ .16 $ .04 $ .04 ========== ========== ========== ========== -18-