EXHIBIT 11.1 Statement Re: SFAS 128 Restated Quarterly Computation of Earning Per Share For Years 1997 and 1996 CULLEN/FROST BANKERS, INC. COMPUTATION OF EARNINGS PER COMMON SHARE Basic and Diluted (Unaudited) (dollars in thousands, except per share amounts) THREE MONTHS ENDED 1997 THREE MONTHS ENDED 1996 ----------------------------------------- ---------------------------------------- BASIC EARNINGS PER SHARE MAR 31 JUNE 30 SEPT 30 DEC 31 MAR 31 JUNE 30 SEPT 30 DEC 31 ======== ======== ======== ======== ======== ======== ======== ======= Net Income .................................. $ 15,063 $ 15,631 $ 16,146 $ 16,645 $ 13,075 $ 13,518 $ 13,985 $14,400 ======== ======== ======== ======== ======== ======== ======== ======= Weighted average number of common shares outstanding ............................... 22,499 22,483 22,261 22,235 22,421 22,433 22,450 22,471 ======== ======== ======== ======== ======== ======== ======== ======= Basic earnings per common share ............. $ 0.67 $ 0.70 $ 0.73 $ 0.75 $ 0.58 $ 0.60 $ 0.62 $ 0.64 THREE MONTHS ENDED 1997 THREE MONTHS ENDED 1996 ------------------------------------- ------------------------------------- DILUTED EARNINGS PER SHARE MAR 31 JUNE 30 SEPT 30 DEC 31 MAR 31 JUNE 30 SEPT 30 DEC 31 ======= ======= ======= ======= ======= ======= ======= ======= Net Income ........................................... $15,063 $15,631 $16,146 $16,645 $13,075 $13,518 $13,985 $14,400 ======= ======= ======= ======= ======= ======= ======= ======= Weighted average number of common shares outstanding . 22,499 22,483 22,261 22,235 22,421 22,433 22,450 22,471 Addition from assumed exercise of stock options ...... 594 624 717 807 408 427 467 533 ------- ------- ------- ------- ------- ------- ------- ------- Weighted average number of common shares outstanding, including dilutive effect of stock options............................................. 23,093 23,107 22,978 23,042 22,829 22,860 22,917 23,004 ======= ======= ======= ======= ======= ======= ======= ======= Diluted earnings per common share .................... $ 0.65 $ 0.68 $ 0.70 $ 0.72 $ 0.57 $ 0.59 $ 0.61 $ 0.63