SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Robinson David L

(Last)

(First)

(Middle)

4550 MANGELS BLVD

(Street)

FAIRFIELD

94534

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
11/08/2007

3. Issuer Name and Ticker or Trading Symbol
WESTAMERICA BANCORPORATION [ WABC ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP/Banking Division Manager

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	98.1271	D
Common Stock	13,430	I	Deferred
Common Stock	56.45	I	ESOP
Common Stock	0.8419	I	by Daughter

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Non-Qualified Stock Option (right to buy)	01/25/2001⁽¹⁾	01/25/2010	Common Stock	18,300	$24	D
Non-Qualified Stock Option (right to buy)	01/28/2000⁽¹⁾	01/28/2009	Common Stock	2,700	$34.5625	D
Non-Qualified Stock Option (right to buy)	01/23/2003⁽¹⁾	01/23/2012	Common Stock	11,090	$38.74	D
Non-Qualified Stock Option (right to buy)	01/25/2002⁽¹⁾	01/25/2011	Common Stock	11,510	$39.4062	D
Non-Qualified Stock Option (right to buy)	01/23/2004⁽¹⁾	01/23/2013	Common Stock	10,820	$40.75	D
Non-Qualified Stock Option (right to buy)	01/25/2008⁽¹⁾	01/25/2017	Common Stock	11,175	$48.39	D
Non-Qualified Stock Option (right to buy)	01/22/2005⁽¹⁾	01/22/2014	Common Stock	8,790	$49.61	D
Non-Qualified Stock Option (right to buy)	01/26/2006⁽¹⁾	01/26/2015	Common Stock	9,000	$52.539	D
Non-Qualified Stock Option (right to buy)	01/26/2007⁽¹⁾	01/26/2016	Common Stock	11,449	$52.56	D

Explanation of Responses:

1. Options vest ratably over three years beginning one year from date of grant.

Remarks:

Exhibit List Exhibit 24 Power of Attorney

	by: Shirley Kolin, Attorney if Fact, for: David L. Robinson	11/14/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.