EXHIBIT 11 Statement re: Computation of Earnings Per Share CULLEN/FROST BANKERS, INC. Computation of Earnings per Common Share Primary and Fully Diluted (Unaudited) (in thousands) December 31, ---------------------------- Primary Earnings per Share 1993 1992 1991 - ------------------------------------------------ -------- ------- ------- Income before extraordinary credit and cumulative effect of accounting change $ 38,797 $17,625 $ 205 Elimination of interest on 9.75% convertible subordinated debentures due 1996, net of tax 54 643 -------- ------- ------- Income applicable to common stock before extraordinary credit and cumulative effect of accounting change 38,851 18,268 205 Extraordinary credit 6,497 Cumulative effect of accounting change 8,439 ------- ------- ------- Net income applicable to common stock $47,290 $24,765 $ 205 ======= ======= ======= Weighted average shares outstanding 10,922 10,175 9,897 Addition from assumed exercise of stock options 189 284 178 Addition of assumed conversion of 9.75% convertible subordinated debentures due 1996 40 515 ------- ------- ------- Weighted average number of common shares outstanding 11,151 10,974 10,075 ======= ======= ======= Primary earnings per common share: Income before extraordinary credit and cumulative effect of accounting change $3.48 $1.66 $0.02 Net income 4.24 2.26 0.02 December 31, ---------------------------- Fully Diluted Earnings per Share 1993 1992 1991 - ------------------------------------------------ -------- ------- ------- Income before extraordinary credit and cumulative effect of accounting change $38,797 $17,625 $ 205 Elimination of interest on 9.75% convertible subordinated debentures due 1996, net of tax 54 643 ------- ------- ------ Income applicable to common stock before extraordinary credit and cumulative effect of accounting change 38,851 18,268 205 Extraordinary credit 6,497 Cumulative effect of accounting change 8,439 ------- ------- ------ Net income applicable to common stock $47,290 $24,765 $ 205 ======= ======= ====== Weighted average shares outstanding 10,922 10,175 9,897 Addition from assumed exercise of stock options 189 325 178 Addition of assumed conversion of 9.75% convertible subordinated debentures due 1996 40 515 ------- ------- ------ Weighted average number of common shares outstanding 11,151 11,015 10,075 ======= ======= ====== Fully diluted earnings per common share: Income before extraordinary credit and cumulative effect of accounting change $3.48 $1.66 $0.02 Net income 4.24 2.25 0.02