EXHIBIT 11 WEST ONE BANCORP COMPUTATION OF PER SHARE EARNINGS Dollars in thousands, except per share, for the year ended December 31, 1994 1993 1992 Primary earnings per share: Weighted average number of shares 35,355,863 32,803,044 29,923,980 Common stock equivalents computed under the treasury stock method using average market price. 455,701 488,938 419,416 Total 35,811,564 33,291,982 30,343,396 Fully diluted earnings per share: Weighted average number of shares 35,355,863 32,803,044 29,923,980 Common stock equivalents computed under the treasury stock method using the greater of ending or average market price. 456,047 505,788 514,844 Other potentially dilutive securities 2,684,569 2,687,450 2,687,450 TOTAL 38,496,479 35,996,282 33,126,274 Net income $103,171 $83,187 $63,372 Interest expense (net of tax) incurred for other potentially dilutive securities $ 2,315 $ 2,317 $ 2,353 Earnings per share: Primary $ 2.88 $ 2.50 $ 2.09 Fully diluted 2.74 2.38 1.98