1 Exhibit 11 SECURITY FIRST CORP. COMPUTATION OF EARNINGS PER SHARE Three months ended Nine months ended December 31, December 31, 1997 1996 (a) 1997 1996 (a) ------------------------------ ------------------------------ BASIC: Earnings: Net Income available to common shareholders $ 2,356,000 $2,040,000 $ 6,851,000 $4,260,000 ============================== ============================== Shares: Weighted average number of common shares outstanding 7,578,118 7,458,344 7,554,113 7,420,383 ============================== ============================== Basic earnings per share $ 0.31 $ 0.27 $ 0.91 $ 0.57 ============================== ============================== DILUTED: Earnings: Net Income available to common shareholders $ 2,356,000 $2,040,000 $ 6,851,000 $4,260,000 Adjustment for interest expense on convertible subordinated debentures net of tax 77,000 98,000 256,000 293,000 ------------------------------ ------------------------------ Net income applicable to diluted shares $ 2,433,000 $2,138,000 $ 7,107,000 $4,553,000 ============================== ============================== Shares: Weighted average number of common shares outstanding 7,578,118 7,458,344 7,554,113 7,420,383 Shares issuable from assumed exercise of stock options 220,545 128,265 196,185 133,580 Shares issuable from assumed conversion of convertible subordinated debentures 924,459 1,124,919 989,645 1,125,561 ------------------------------ ------------------------------ Adjusted weighted average shares 8,723,122 8,711,528 8,739,943 8,679,524 ============================== ============================== Diluted earnings per share $ 0.28 $ 0.25 $ 0.81 $ 0.52 ============================== ============================== <FN> (a) Adjusted to reflect the three-for-two stock split distributed on July 31, 1997, and the implementation of Statement of Financial Accounting Standards No. 128, "Earnings Per Share". 23