1 EXHIBIT 11.1 Computation of Earnings WILLIS LEASE FINANCE CORPORATION COMPUTATION OF EARNINGS PER SHARE Three months ended Nine months ended September 30, September 30, ------------------------- ------------------------- Income before extraordinary item 1997 1996 1997 1996 ---------- ---------- ---------- ---------- Primary Earnings: Income to common shares before extraordinary item $ 1,451 $ 434 $ 3,732 $ 2,001 Shares: Weighted average number of common shares outstanding 5,741 3,425 5,709 3,215 ========== ========== ========== ========== Primary earnings per common share before extraordinary item $ 0.25 $ 0.13 $ 0.65 $ 0.62 Assuming Full Dilution Earnings: Income before extraordinary item $ 1,451 $ 434 $ 3,732 $ 2,001 ========== ========== ========== ========== Shares: Weighted average number of common shares outstanding and common stock equivalents 5,741 3,425 5,709 3,215 ========== ========== ========== ========== Earnings per common share assuming full dilution $ 0.25 $ 0.13 $ 0.65 $ 0.62 ========== ========== ========== ========== Net income Primary Earnings: Net income to common shares: $ 1,451 $ 434 $ 5,740 $ 2,001 ========== ========== ========== ========== Shares: Weighted average number of common shares outstanding 5,741 3,425 5,709 3,215 ========== ========== ========== ========== Primary earnings per common share $ 0.25 $ 0.13 $ 1.01 $ 0.62 Assuming Full Dilution Earnings: Net income: $ 1,451 $ 434 $ 5,740 $ 2,001 ========== ========== ========== ========== Shares: Weighted average number of common shares outstanding and common stock equivalents 5,741 3,425 5,709 3,215 ========== ========== ========== ========== Earnings per common share assuming full dilution $ 0.25 $ 0.13 $ 1.01 $ 0.62 ========== ========== ========== ==========