EXHIBIT 11 COMPUTATION OF EARNINGS PER SHARE EXHIBIT 11 FIRST FINANCIAL CORPORATION COMPUTATION OF EARNINGS PER SHARE For The For The Three Months Ended Year Ended December 31, December 31, ---------------------- ---------------------- 1995 1994 1995 1994 ------ ------ ------ ----- (In thousands, except per share data) PRIMARY EARNINGS PER SHARE Net income $19,059 $15,816 $63,984 $53,029 ======= ======= ======= ======= Shares: Weighted average common shares outstanding 29,638 29,036 29,431 28,926 Shares from assumed exercise of options (as determined by the treasury stock method) 755 855 754 929 ------- ------- ------- ------- Common and common equivalent shares 30,393 29,891 30,185 29,855 ======= ======= ======= ======= Primary Earnings Per Common Share $ .63 $ .53 $ 2.12 $ 1.78 ======= ======= ======= ======= FULLY DILUTED EARNINGS PER SHARE Net income $19,059 $15,816 $63,984 $53,029 ======= ======= ======= ======= Shares: Weighted average common shares outstanding 29,638 29,036 29,431 28,926 Shares from assumed exercise of options (as determined by the treasury stock method) 778 859 903 961 ------- ------- ------- ------- Common and common equivalent shares 30,416 29,895 30,334 29,887 ======= ======= ======= ======= Fully Diluted Earnings Per Common Share $ .63 $ .53 $ 2.11 $ 1.77 ======= ======= ======= ======= -1-