X0202 4 2007-10-25 0 0000311094 WESTAMERICA BANCORPORATION WABC 0001201513 PAYNE DAVID L 1 1 0 0 Chairman, President & CEO Common Stock 2007-10-25 4 M 0 100 32.7917 A 100 D Common Stock 2007-10-25 4 S 0 100 46.67 D 0 D Common Stock 2007-10-25 4 M 0 200 32.7917 A 200 D Common Stock 2007-10-25 4 S 0 200 46.62 D 0 D Common Stock 2007-10-25 4 M 0 300 32.7917 A 300 D Common Stock 2007-10-25 4 S 0 300 46.59 D 0 D Common Stock 2007-10-25 4 M 0 100 32.7917 A 100 D Common Stock 2007-10-25 4 S 0 100 46.58 D 0 D Common Stock 2007-10-25 4 M 0 100 32.7917 A 100 D Common Stock 2007-10-25 4 S 0 100 46.53 D 0 D Common Stock 2007-10-25 4 M 0 100 32.7917 A 100 D Common Stock 2007-10-25 4 S 0 100 46.52 D 0 D Common Stock 2007-10-25 4 M 0 1300 32.7917 A 1300 D Common Stock 2007-10-25 4 S 0 1300 46.49 D 0 D Common Stock 2007-10-25 4 M 0 107 32.7917 A 107 D Common Stock 2007-10-25 4 S 0 107 46.48 D 0 D Common Stock 2007-10-25 4 M 0 111 32.7917 A 111 D Common Stock 2007-10-25 4 S 0 111 46.47 D 0 D Common Stock 2007-10-25 4 M 0 189 32.7917 A 189 D Common Stock 2007-10-25 4 S 0 189 46.46 D 0 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 2200 0 D 1999-01-21 2008-01-21 Common Stock 2200 63084 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 2170 0 D 1999-01-21 2008-01-21 Common Stock 2170 60914 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 2400 0 D 1999-01-21 2008-01-21 Common Stock 2400 58514 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 100 0 D 1999-01-21 2008-01-21 Common Stock 100 58414 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 3000 0 D 1999-01-21 2008-01-21 Common Stock 3000 55414 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1998 0 D 1999-01-21 2008-01-21 Common Stock 1998 53416 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1997 0 D 1999-01-21 2008-01-21 Common Stock 1997 51419 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1935 0 D 1999-01-21 2008-01-21 Common Stock 1935 49484 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 2111 0 D 1999-01-21 2008-01-21 Common Stock 2111 47373 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 7313 0 D 1999-01-21 2008-01-21 Common Stock 7313 40060 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 3800 0 D 1999-01-21 2008-01-21 Common Stock 3800 36260 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1318 0 D 1999-01-21 2008-01-21 Common Stock 1318 34942 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1282 0 D 1999-01-21 2008-01-21 Common Stock 1282 33660 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 3716 0 D 1999-01-21 2008-01-21 Common Stock 3716 29944 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 2000 0 D 1999-01-21 2008-01-21 Common Stock 2000 27944 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1800 0 D 1999-01-21 2008-01-21 Common Stock 1800 26144 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 3600 0 D 1999-01-21 2008-01-21 Common Stock 3600 22544 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 3411 0 D 1999-01-21 2008-01-21 Common Stock 3411 19133 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 7794 0 D 1999-01-21 2008-01-21 Common Stock 7794 11339 D Non-Qualified Stock Option (right to buy) 32.7917 2007-10-25 4 M 0 1756 0 D 1999-01-21 2008-01-21 Common Stock 1756 9583 D Options vest ratably over three years beginning one year from date of grant. This is filing #4 of 9 filings for this date. /s/David L. Payne 2007-10-29