Exhibit 11
WESTAMERICA BANCORPORATION
Computation of Earnings Per Share on Common and
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Common Equivalent Shares and on Common Shares
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Assuming Full Dilution
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For the For the
three month six months
ended June 3 ended June 3
(In thousands, except per share data 2000 1999 2000 1999
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Weighted average number of common
shares outstanding - basic 36,220 39,046 36,423 39,337
Add exercise of options reduced by the
number of shares that could have been
purchased with the proceeds of such
exercise 493 628 463 634
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Weighted average number of common
shares outstanding - diluted 36,713 39,674 36,886 39,971
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Net income $19,667 $18,869 $38,893 $37,273
Basic earnings per share $0.54 $0.48 $1.07 $0.95
Diluted earnings per share $0.54 $0.48 $1.05 $0.93
