ENTWISLE ROBERT W 4

4 · WESTAMERICA BANCORPORATION · Filed Oct 26, 2004

Insider Transaction Report

Form 4

Period: 2004-10-25

WESTAMERICA BANCORPORATIONWABC

ENTWISLE ROBERT W

Exec. Officer Prim. Subsidiary

Transactions

Sale
Common Stock
2004-10-25$55.50/sh−1,000$55,500→ 0 total
Exercise/Conversion
Common Stock
2004-10-25$38.74/sh+1,000$38,740→ 1,000 total
Exercise/Conversion
Common Stock
2004-10-25$39.41/sh+1,480$58,321→ 1,480 total
Exercise/Conversion
Common Stock
2004-10-25$38.74/sh+320$12,397→ 320 total
Exercise/Conversion
Non-Qualified Stock Option (right to buy)
2004-10-25+1,000→ 12,480 total
Exercise: $38.74From: 2003-01-23Exp: 2012-01-23→ Common Stock (1,000 underlying)
Sale
Common Stock
2004-10-25$55.51/sh−1,480$82,155→ 0 total
Exercise/Conversion
Non-Qualified Stock Option (right to buy)
2004-10-25+1,000→ 18,680 total
Exercise: $38.74From: 2003-01-23Exp: 2012-01-23→ Common Stock (1,000 underlying)
Exercise/Conversion
Non-Qualified Stock Option (right to buy)
2004-10-25+2,200→ 16,480 total
Exercise: $38.74From: 2003-01-23Exp: 2012-01-23→ Common Stock (2,200 underlying)
Sale
Common Stock
2004-10-25$55.51/sh−320$17,763→ 0 total
Exercise/Conversion
Non-qualified Stock Option (right to buy)
2004-10-25+1,000→ 1,000 total
Exercise: $39.41From: 2002-01-25Exp: 2011-01-25→ Common Stock (1,000 underlying)
Exercise/Conversion
Common Stock
2004-10-25$38.74/sh+2,200$85,228→ 2,200 total
Sale
Common Stock
2004-10-25$55.00/sh−2,200$121,000→ 0 total
Exercise/Conversion
Non-Qualified Stock Optio (right to buy)
2004-10-25+320→ 12,160 total
Exercise: $38.74From: 2003-01-23Exp: 2012-01-23→ Common Stock (320 underlying)
Exercise/Conversion
Non-Qualified Stock Optio (right to buy)
2004-10-25+1,000→ 3,480 total
Exercise: $39.41From: 2002-01-25Exp: 2011-01-25→ Common Stock (1,000 underlying)
Exercise/Conversion
Non-Qualified Stock Option (right to buy)
2004-10-25+1,480→ 2,000 total
Exercise: $39.41From: 2002-01-25Exp: 2011-01-25→ Common Stock (1,480 underlying)

Holdings

Common Stock
(indirect: ESOP)
1,519.135
Common Stock
(indirect: By Trust)
3,174

Footnotes (2)

[F1]Includes holdings through 9/30/04 in Westamerica Bancorporation's Tax Deferred Savings/Retirement (ESOP) Plan.
[F2]Options vest ratably over three years beginning one year after grant date.

Documents

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