SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Robinson David L

(Last) (First) (Middle)
WESTAMERICA BANCORPORATION
4550 MANGELS BLVD

(Street)
FAIRFIELD CA 94534

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
WESTAMERICA BANCORPORATION [ WABC ]
5. 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
3. Date of Earliest Transaction (Month/Day/Year)
04/25/2016
4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 04/25/2016 S 1,499 D $50.162 39.9196 D(1)
Common Stock 04/25/2016 M 3,333 A $45.93 3,372.9196 D(1)
Common Stock 04/25/2016 S 3,333 D $50.1879 39.9196 D(1)
Common Stock 04/25/2016 M 24,800 A $43.71 24,839.9196 D(1)
Common Stock 04/25/2016 S 24,800 D $50.1879 39.9196 D(1)
Common Stock 04/25/2016 M 8,867 A $42.695 8,906.9196 D(1)
Common Stock 04/25/2016 S 8,867 D $50.1879 39.9196 D(1)
Common Stock 04/26/2016 M 11,175 A $48.39 11,214.9196 D(1)
Common Stock 04/26/2016 S 11,175 D $50.2337 39.9196 D(1)
Common Stock 04/26/2016 M 23,286 A $47.13 23,325.9196 D(1)
Common Stock 04/26/2016 S 23,286 D $50.2337 39.9196 D(1)
Common Stock 04/26/2016 M 18,467 A $45.93 18,506.9196 D(1)
Common Stock 04/26/2016 S 18,467 D $50.2337 39.9196 D(1)
Common Stock 19,140 I Deferred
Common Stock 1,790.168 I Esop
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-qualified Stock Option (Right to Buy) $45.93 04/25/2016 M 3,333 01/26/2013(2) 01/26/2022 Common Stock 3,333 $0 18,467 D
Non-qualified Stock Option (Right to Buy) $43.71 04/25/2016 M 24,800 01/24/2014(2) 01/24/2023 Common Stock 24,800 $0 0 D
Non-qualified Stock Option (Right to Buy) $42.695 04/25/2016 M 8,867 01/22/2016(2) 01/22/2025 Common Stock 8,867 $0 17,733 D
Non-qualified Stock Option (Right to Buy) $48.39 04/26/2016 M 11,175 01/25/2008(2) 01/25/2017 Common Stock 11,175 $0 0 D
Non-qualified Stock Option (Right to Buy) $47.13 04/26/2016 M 23,286 01/24/2009(2) 01/24/2018 Common Stock 23,286 $0 0 D
Non-qualified Stock Option (Right to Buy) $45.93 04/26/2016 M 18,467 01/26/2013(2) 01/26/2022 Common Stock 18,467 $0 0 D
Explanation of Responses:
1. Includes shares from dividend reinvestment and from purchases through a stock purchase plan that are exempt through Rule 16b-3(c).
2. Options vest ratably over three years beginning one year from date of grant.
/s/ David L. Robinson 04/26/2016
** 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 4 (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).
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