EXHIBIT XI Computation of Earnings Willis Lease Finance Corporation Computation of Earnings Per Share Three months ended Six months ended June 30, June 30, Income before extraordinary item 1997 1996 1997 1996 ----------------------------------- Primary Earnings: Income to common shares before extraordinary item $1,266 $ 731 $2,281 $1,568 Shares: Weighted average number of common shares outstanding 5,556 3,111 5,554 3,111 =================================== Primary earnings per common share before extraordinary item $ 0.23 $ 0.23 $ 0.41 $ 0.50 Assuming Full Dilution Earnings: Income before extraordinary item $1,266 $ 731 $2,281 $1,568 =================================== Shares: Weighted average number of common shares outstanding and common stock equivalents 5,556 3,111 5,554 3,111 =================================== Earnings per common share assuming full dilution $ 0.23 $ 0.23 $ 0.41 $ 0.50 =================================== Net income Primary Earnings: Net income to common shares: $1,266 $ 731 $4,289 $1,568 =================================== Shares: Weighted average number of common shares outstanding 5,556 3,111 5,554 3,111 =================================== Primary earnings per common share $ 0.23 $ 0.23 $ 0.77 $ 0.50 Assuming Full Dilution Earnings: Net income $1,266 $ 731 $4,289 $1,568 =================================== Shares: Weighted average number of common shares outstanding and common stock equivalents 5,556 3,111 5,554 3,111 =================================== Earnings per common share assuming full dilution $ 0.23 $ 0.23 $ 0.77 $ 0.50 ===================================