Company:  WESTAMERICA BANCORPORATIO ... (WABC)
Form Type:  4
Filing Date:  1/27/2012 
CIK:  0000311094 
Address:  1108 FIFTH AVE 
City, State, Zip:  SAN RAFAEL, California 94901 
Telephone:  (707) 863-6000 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$45.46   		Change: 
0.00 (0.00%)  
Trade Time: 
May 21   		Market Cap: 
$1.23B
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES
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