Exhibit 11.1 Castle Energy Corporation Statement of Computation of Earnings Per Share (Dollars in thousands, except per share amounts) (Unaudited) Six Months Ended March 31, ------------------------------------------------------- 1996 1995 -------------------------- ------------------------- Fully Fully Primary Diluted Primary Diluted ----------- ----------- ----------- ----------- I. Actual shares outstanding at September 30 6,693,646 6,693,646 7,627,646 7,627,646 Stock issued during the period: Stock, net (894,484) (894,484) Options exercised 1,648 1,648 II. Weighted Equivalent Shares: Assumed exercise of options and warrants 18,701 25,715 143,839 28,058 Assumed conversion of debenture 38,450 38,450 ----------- ----------- ----------- ----------- III. Weighted average shares and equivalent shares 6,712,347 6,719,361 6,917,099 6,801,318 =========== =========== =========== =========== IV. Net income: Net income before adjustment $ 10,628 $ 10,628 $ 14,120 $ 14,120 Assumed interest savings, net of tax, "as if," the convertible debenture had been exercised and debt had been retired utilizing proceeds of the exercise of options and warrants 6 6 ----------- ----------- ----------- ----------- Adjusted net income $ 10,628 $ 10,628 $ 14,126 $ 14,126 =========== =========== =========== =========== V. Net income per share $ 1.58 $ 1.58 $ 2.04 $ 2.08(A) =========== =========== =========== =========== (1) Fully diluted earnings per share is not presented as it is anti-dilutive.