WESTAMERICA BANCORPORATION
DEF 14A, 1997-03-18
NATIONAL COMMERCIAL BANKS
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                        SCHEDULE 14A INFORMATION
            PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE
                    SECURITIES EXCHANGE ACT OF 1934
                     (Amendment No. ______________)


Filed by the Registrant    /X/
Filed by a party other than the Registrant   / /

Check the appropriate box:
/ /  Preliminary proxy statement
/ /  Confidential, for use of the Commission only (as permitted by
     Rule 14a-6(e)(2))
/X/  Definitive proxy statement
/ /  Definitive additional materials
/ /  Soliciting material pursuant to Sec. 240.14a-11(c) or Sec. 240.14a-12

                           WESTAMERICA BANCORPORATION
            ------------------------------------------------
            (Name of Registrant as Specified in Its Charter)

                           WESTAMERICA BANCORPORATION
  ------------------------------------------------------------------------
  (Name of Person(s) Filing Proxy Statement, if other than the Registrant)


Payment of filing fee (Check the appropriate box):

/X/  No fee required.

/ /  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.


(1)  Title of each class of securities to which transactions applies:

- ----------------------------------------------------------------------------

(2)  Aggregate number of securities to which transactions applies:

- ----------------------------------------------------------------------------

(3)  Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing
fee is calculated and state how it was determined):

- ----------------------------------------------------------------------------

(4)  Proposed maximum aggregate value of transaction:

- ----------------------------------------------------------------------------

(5)  Total fee paid:

- ----------------------------------------------------------------------------

/ /  Fee paid previously with preliminary materials.
/ /  Check box if any part of the fee is offset as provided by Exchange Act
     Rule 0-11(a)(2) and identify the filing for which the offsetting fee
     was paid previously.  Identify the previous filing by registration
     statement number, or the Form or Schedule and the date of its filing.

(1)  Amount previously paid:

- ----------------------------------------------------------------------------

(2)  Form, Schedule or Registration Statement No.:

- ----------------------------------------------------------------------------

(3)  Filing party:

- ----------------------------------------------------------------------------

(4)  Date filed:

- ----------------------------------------------------------------------------

<PAGE>



[GRAPHIC OMITTED]          WESTAMERICA BANCORPORATION
                                1108 FIFTH AVENUE
                          SAN RAFAEL, CALIFORNIA 94901
                                 March 20, 1997

To Our Shareholders:

   The Annual Meeting of Shareholders of Westamerica Bancorporation will be held
at 7:30 P.M. ON TUESDAY,  APRIL 22, 1997, AT THE SHOWCASE THEATRE, MARIN CENTER,
SAN RAFAEL, CALIFORNIA, as stated in the formal notice accompanying this letter.
We hope you will plan to attend.

   At the Annual Meeting, the shareholders will be asked to elect directors,  to
approve the  selection of  independent  auditors  and to consider a  shareholder
proposal.

   Please  sign and return the  enclosed  proxy as  promptly as possible so that
your shares may be represented  at the Annual  Meeting.  If you attend,  you may
vote in person even though you previously returned your proxy.

   We look  forward to seeing you at the Annual  Meeting on  Tuesday,  April 22,
1997.


                                        Sincerely,

                                        /s/ DAVID L. PAYNE

                                        DAVID L. PAYNE
                                        Chairman of the Board,
                                        President and Chief Executive Officer



<PAGE>


                           WESTAMERICA BANCORPORATION
                                1108 FIFTH AVENUE
                          SAN RAFAEL, CALIFORNIA 94901

                              --------------------

            NOTICE OF ANNUAL MEETING OF SHAREHOLDERS--APRIL 22, 1997

To the Shareholders of WESTAMERICA BANCORPORATION:

   The Annual Meeting of Shareholders will be held at the SHOWCASE THEATRE,
MARIN CENTER, SAN RAFAEL, CALIFORNIA, ON TUESDAY, APRIL 22, 1997, AT 7:30
P.M. for the purpose of:

      1. Electing 11 directors;

      2. Approving the selection of independent auditors for 1997;

      3. Considering a shareholder proposal to change the method of compensating
   the members who serve on the Board of Directors; and

      4.  Transacting such other business as may properly come before the Annual
   Meeting.

   Shareholders  of record at the close of business on February  28,  1997,  are
entitled  to  notice of and to vote at the  Annual  Meeting  or any  adjournment
thereof.  You are cordially invited to attend the Annual Meeting.  If you do not
expect to be present,  please complete, sign and date the accompanying proxy and
mail it at once in the  enclosed  envelope.  No postage is  necessary  if mailed
within the United States.

   WESTAMERICA BANCORPORATION'S ANNUAL REPORT FOR THE FISCAL YEAR ENDED DECEMBER
31, 1996 IS ENCLOSED. THE ANNUAL REPORT CONTAINS FINANCIAL AND OTHER INFORMATION
ABOUT THE ACTIVITIES OF WESTAMERICA BANCORPORATION, BUT IT IS NOT TO BE DEEMED A
PART OF THE PROXY SOLICITING MATERIALS.


                                              BY ORDER OF THE BOARD OF
                                              DIRECTORS

                                              /s/ Mary Anne Bell

                                              Mary Anne Bell
                                              Assistant Corporate Secretary


Dated: March 20, 1997


- --------------------------------------------------------------------------------

                            YOUR VOTE IS IMPORTANT

YOU ARE URGED TO COMPLETE,  SIGN,  DATE AND  PROMPTLY  RETURN YOUR PROXY SO THAT
YOUR SHARES MAY BE VOTED IN ACCORDANCE WITH YOUR WISHES.

- --------------------------------------------------------------------------------

<PAGE>


                              TABLE OF CONTENTS

                                                                            PAGE
                                                                            ----
GENERAL ..................................................................... 1

ELECTION OF DIRECTORS ....................................................... 2

CERTAIN INFORMATION ABOUT THE BOARD OF DIRECTORS AND CERTAIN                 
 COMMITTEES OF THE BOARD .................................................... 3

EXECUTIVE OFFICERS .......................................................... 5

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS                               
 AND MANAGEMENT ............................................................. 5

EXECUTIVE COMPENSATION ...................................................... 8

OTHER ARRANGEMENTS .......................................................... 9

BOARD COMPENSATION COMMITTEE REPORT .........................................10

STOCK PERFORMANCE CHART .....................................................12

APPROVAL OF AUDITORS ........................................................12

SHAREHOLDER PROPOSAL ........................................................13

OTHER MATTERS ...............................................................14
                                                              

<PAGE>

                           WESTAMERICA BANCORPORATION
                                1108 FIFTH AVENUE
                          SAN RAFAEL, CALIFORNIA 94901

                              --------------------

                                 PROXY STATEMENT
                                 March 20, 1997

                              --------------------

                                     GENERAL

   This proxy  statement is furnished in  connection  with the  solicitation  of
proxies by the Westamerica Bancorporation (the "Corporation") Board of Directors
(the "Board") for use at the Annual Meeting of  Shareholders  to be held at 7:30
p.m.,  Tuesday,  April 22, 1997,  at the Showcase  Theatre,  Marin  Center,  San
Rafael,  California,  for the purposes set forth in the  accompanying  Notice of
Annual Meeting of Shareholders  (the "Meeting").  This proxy statement and proxy
were first mailed to shareholders on or about March 20, 1997.

   Voting Rights and Vote Required.  Shareholders of record of the Corporation's
common stock at the close of business on February 28, 1997, the record date, are
entitled  to  vote  at the  Meeting.  On  that  date,  9,444,222  shares  of the
Corporation's  common stock were outstanding.  The determination of shareholders
entitled  to vote at the  Meeting  and the  number  of votes  to which  they are
entitled  was made on the basis of the  Corporation's  records  as of the record
date.

   Each share is entitled to one vote,  except that with respect to the election
of directors,  a shareholder may cumulate votes as to candidates nominated prior
to voting if any  shareholder  gives  notice of intent to cumulate  votes at the
Meeting  prior  to the  voting.  If  any  shareholder  gives  such  notice,  all
shareholders  may cumulate their votes for nominees.  Under  cumulative  voting,
each share  carries as many votes as the number of directors to be elected,  and
the  shareholder  may cast all of such votes for a single  nominee or distribute
them in any manner among as many nominees as desired.

   In the election of directors, the 11 nominees receiving the highest number of
votes will be elected.  Approval of the  selection of the  independent  auditors
will require the  affirmative  vote of a majority of the shares  represented and
voting at the  Meeting.  Approval of the  shareholder  proposal  which  proposes
changing the method of  compensating  the members of the Board will also require
the affirmative  vote of a majority of the shares  represented and voting at the
Meeting.  Abstentions  will not  count as  votes  in  favor of the  election  of
directors or any of the other proposals.

   Quorum.  A majority  of the shares  entitled to vote,  represented  either in
person or by a properly executed proxy, will constitute a quorum at the Meeting.
Shares  which  abstain  from voting and "broker  non-votes"  (shares as to which
brokerage  firms have not received  voting  instructions  from their clients and
therefore do not have the  authority to vote the shares at the Meeting)  will be
counted for purposes of determining a quorum only.

   Voting of Proxies.  The shares  represented by all properly  executed proxies
received  in  time  for the  Meeting  will  be  voted  in  accordance  with  the
shareholders'  choices  specified  therein;  provided,  however,  that  where no
choices have been  specified,  the shares will be voted to approve the selection
of  KPMG  Peat  Marwick  LLP  as  independent  auditors  and to  disapprove  the
shareholder  proposal  to change the method of  compensating  the members of the
Board.  When  exercising  the powers  granted to proxy holders under the caption
"ELECTION OF DIRECTORS,"  the shares will be voted for the election of directors
in the manner described therein.

   The Board knows of no matters to be brought before the Meeting other than the
election of directors,  the selection of  independent  auditors for 1997 and the
consideration of a shareholder proposal. If, however, any other matters of which
the  Board  is not now  aware  are  properly  presented  for  action,  it is the
intention of the proxy  holders named in the enclosed form of proxy to vote such
proxy on such matters in accordance with their best business judgment.


                                       1
<PAGE>

   Revocability  of Proxy.  The delivery of the enclosed proxy does not preclude
the shareholder delivering the proxy from voting in person or changing the proxy
should  the  shareholder  so  desire.  The  proxy  may be  revoked  by a written
directive  to the  Corporation,  by  another  proxy  subsequently  executed  and
presented at the Meeting at any time prior to the actual voting or by attendance
and voting at the Meeting.

   Shareholder  Proposals.  Proposals  of  shareholders  to  be  considered  for
inclusion in the  Corporation's  annual proxy  statement  for next year's annual
meeting must be received at the  Corporation's  executive  offices at 1108 Fifth
Avenue, San Rafael, California 94901, no later than November 19, 1997.

                            ELECTION OF DIRECTORS

   Dr. Murray is retiring from the Board  effective March 27, 1997. As a result,
the number of directors of the Board to be elected at the Meeting to hold office
for the ensuing year and until their successors are elected and qualified is 11.
It is the  intention of the proxy  holders  named in the enclosed  proxy to vote
such proxies (except those containing contrary instructions) for the 11 nominees
named below.

   The Board  does not  anticipate  that any of the  nominees  will be unable to
serve as a director,  but if that should  occur  before the  Meeting,  the proxy
holders  reserve the right to substitute as nominee and vote for another  person
of their  choice in the place and stead of any nominee  unable to so serve.  The
proxy holders  reserve the right to cumulate votes for the election of directors
and cast all of such votes for any one or more of the nominees, to the exclusion
of the  others,  and in such  order  of  preference  as the  proxy  holders  may
determine in their discretion.

   Nominees.  The  nominees  for election to the office of director of the Board
are named and  certain  information  with  respect to them is given  below.  The
information  has been furnished to the  Corporation by the respective  nominees.
All of the nominees have engaged in their  indicated  principal  occupation  for
more than five years, unless otherwise indicated.


<TABLE>
<CAPTION>

                                                                                                 DIRECTOR
NAME OF NOMINEE                                   PRINCIPAL OCCUPATION                             SINCE
- ---------------                                   --------------------                             -----
<S>                                <C>                                                             <C>    
Etta Allen ....................    Mrs. Allen, born in 1929, is president and owner of Allen       1988
                                   Heating and Sheet Metal of Greenbrae.                           

Louis E. Bartolini ............    Mr. Bartolini, born in 1932, retired in 1988 as a vice          1991
                                   president and financial consultant with Merrill Lynch,          
                                   Pierce, Fenner & Smith, Inc.                                    

Charles I. Daniels, Jr. .......    Mr. Daniels, born in 1926, is president and owner of House      1989
                                   of Daniels, Inc., of Novato, a beverage distribution firm.      

Don Emerson ...................    Mr. Emerson, born in 1928, was president of Calso Company.      1979
                                   He presently devotes his time to personal investments.          

Arthur C. Latno, Jr. ..........    Mr. Latno, born in 1929, was an Executive Vice President        1985
                                   for Pacific Telesis Group (formerly Pacific Telephone Co.).     
                                   Mr. Latno retired from that company in November of 1992.        

Patrick D. Lynch ..............    Mr. Lynch, born in 1933, is a consultant and director for       1986
                                   several high technology firms.                                  

Catherine Cope MacMillan.......    Ms. MacMillan, born in 1947, is president and owner of The      1985
                                   Firehouse Restaurant in Sacramento.                             

Ronald A. Nelson ..............    Mr. Nelson, born in 1942, was vice president of Charles M.      1988
                                   Schulz Creative Associates, a general partner in various        
                                   Schulz partnerships and trustee for various Schulz trusts       
                                   and the Schulz foundation. He now devotes his time to           
                                   personal investments.                                           
                                                                                               

                                       2
<PAGE>

                                                                                                 DIRECTOR
NAME OF NOMINEE                                   PRINCIPAL OCCUPATION                             SINCE
- ---------------                                   --------------------                             -----
Carl R. Otto .................    Mr. Otto, born in 1946, is the President and Chief               1992
                                  Executive Officer of John F. Otto, Inc., a general               
                                  contracting firm in Sacramento.                                  

David L. Payne ...............    Mr. Payne, born in 1955, is the Chairman of the Board,           1984
                                  President and Chief Executive Officer of the Corporation.        
                                  Mr. Payne is President and Chief Executive Officer of            
                                  Gibson Printing and Publishing Company and Gibson Radio and      
                                  Publishing Company, which are newspaper, commercial              
                                  printing and real estate investment companies headquartered      
                                  in Vallejo.                                                      

Edward B. Sylvester  .........    Mr. Sylvester, born in 1936, is the owner of Sylvester           1979
                                  Engineering,  Inc., a civil  engineering  and planning           
                                  firm.                                                    
                                                                                                  
</TABLE>


                CERTAIN INFORMATION ABOUT THE BOARD OF DIRECTORS
                       AND CERTAIN COMMITTEES OF THE BOARD

   The Board held a total of 14 meetings during 1996. Every director attended at
least 75% of the  aggregate of: (i) the 14 Board  meetings;  and (ii) all of the
meetings of any Committee on which such director served.

   Committees of the Board. The Board has an Executive Committee, the members of
which are D. L. Payne,  Chairman,  D. Emerson, A. C. Latno, Jr., P. D. Lynch and
E. B.  Sylvester.  The Board  delegates to the Executive  Committee,  subject to
control  of the Board and  subject  to the  limitations  of  California  General
Corporation  Law, any powers and authority of the Board in the management of the
business  and  affairs  of the  Corporation.  The  Executive  Committee  held 12
meetings in 1996.

   The Board has an Audit  Committee,  the  members  of which are R. A.  Nelson,
Chairman,  E. Allen,  L. E.  Bartolini,  C. I. Daniels,  Jr. and C. R. Otto. The
Audit  Committee  reviews  with  the  Corporation's   independent  auditors  and
management the Corporation's  accounting principles,  policies and practices and
its  reporting  policies and  practices.  The Audit  Committee  reviews with the
independent auditors the plan and results of the auditing engagement and reviews
the scope and results of the  procedures  of the  Corporation's  internal  Audit
Department.  The Audit Committee conducts  investigations of the adequacy of the
Corporation's  internal  accounting  procedures  and reviews the results of such
investigations  with the Corporation's  internal audit staff and with the Board.
The Audit  Committee  reviews  the  reports of  examinations  conducted  by bank
regulatory authorities. The Audit Committee held five meetings in 1996.

   The Board has an Employee Benefits and Compensation Committee, the members of
which are P. D. Lynch,  Chairman,  E. Allen, D. Emerson, A. C. Latno, Jr., C. C.
MacMillan and R. A. Nelson.  The Employee  Benefits and  Compensation  Committee
administers and carries out the terms of the Corporation's employee stock option
plans as well as the tax  deferred  savings and  retirement  and  profit-sharing
plans.  The  Employee  Benefits  and  Compensation   Committee  administers  the
Corporation's  compensation programs and reviews and recommends to the Board the
compensation  level  for  the  executive  officers  of the  Corporation  and its
subsidiaries.  The Employee Benefits and Compensation Committee also reviews the
performance  of and  recommends  promotions  for the  executive  officers of the
Corporation. The Employee Benefits and Compensation Committee held five meetings
in 1996.

   The Board has a  Nominating  Committee  for the  election of  directors,  the
members of which are A. C. Latno, Jr., Chairman, L. E. Bartolini, C. I. Daniels,
Jr.,  D.  Emerson,  C. C.  MacMillan,  D. L.  Payne  and E.  B.  Sylvester.  The
Nominating Committee is responsible for reviewing the fees paid to directors for
attendance  at Board and  Committee  meetings  and making  recommendations  with
respect thereto. The Nominating Committee will consider shareholder  nominations
for  election to the Board  submitted  in  accordance  with  section 2.14 of the
Bylaws of the Corporation ("Section 2.14"). Section 2.14 requires that


                                       3
<PAGE>

nominations be submitted in writing to the Secretary (or Assistant Secretary) of
the Corporation  within not less than 14 days nor more than 50 days prior to the
annual meeting at which directors will be elected and that  nominations  contain
certain  specified   information   regarding  the  nominee  and  the  nominating
shareholder. The Nominating Committee held one meeting in 1996.

   The Board has a Loan and Investment Committee, the members of which are E. B.
Sylvester, Chairman, A. C. Latno, Jr., P. D. Lynch and C. C. MacMillan. The Loan
and Investment Committee is responsible for reviewing major loans and investment
policies and for monitoring the activities related to the Community Reinvestment
Act. The Loan and Investment Committee met 12 times in 1996.

   Directors'  Fees.  During 1996,  directors of the Corporation and Westamerica
Bank ("WAB")  received an annual  retainer of $14,000.  Each  director  received
$1,000 for each meeting of the Board that he or she attended, except that if the
director was a member of the Board of both the Corporation and a subsidiary bank
and both Boards met on the same day, the director  only received a single $1,000
fee for attending both meetings.

   During 1996,  nonemployee  directors received $500 for each Committee meeting
of the Board  attended.  The Chairman of each  Committee  received an additional
$250, for a total of $750, for each Committee meeting attended.  The Chairman of
the Board,  D. L. Payne,  is  compensated  as an employee and did not receive an
annual retainer or director's fees.

   Indebtedness of Directors and Management. Certain of the directors, executive
officers and their associates have had banking transactions with subsidiaries of
the  Corporation in the ordinary course of business.  All outstanding  loans and
commitments  included in such  transactions  were made on substantially the same
terms, including interest rates and collateral,  as those prevailing at the time
for  comparable  transactions  with other  persons,  did not involve more than a
normal risk of collectibility and did not present other unfavorable features.


                                       4
<PAGE>

<TABLE>
                               EXECUTIVE OFFICERS

   The executive  officers of the Corporation and Westamerica Bank ("WAB") serve
at the pleasure of the Board and are subject to annual  appointment by the Board
at its first  meeting  following  the  Annual  Meeting  of  Shareholders.  It is
anticipated that each of the executive officers listed below will be reappointed
to serve in such  capacities  at the first  meeting of the Board  following  the
Meeting.  The executive  officers  include  David L. Payne,  President and Chief
Executive  Officer,  about whom information is provided above, and the following
persons:

<CAPTION>
                                                                                               HELD
NAME OF EXECUTIVE                                  POSITION                                    SINCE
- -----------------                                  --------                                    -----
<S>                             <C>                                                             <C>
E. Joseph Bowler  ..........    Mr. Bowler, born in 1936, is Senior Vice President and          1980
                                Treasurer for the Corporation.                                  
                                                                                                
Robert W. Entwisle..........    Mr. Entwisle, born in 1947, is Senior Vice President in         1986
                                charge of the Banking Division of WAB.                          
                                                                                                
Evan N. Fricker.............    Mr. Fricker, born in 1938, is Vice President and General        1983
                                Auditor for the Corporation.                                    
                                                                                                
Charles L. Fritz ...........    Mr.  Fritz,  born in 1936,  is  Executive  Vice President       1988
                                and 1988 Chief Credit Officer of the Corporation.               
                                                                                                
Dennis R. Hansen ...........    Mr.  Hansen,  born in  1950,  is  Senior  Vice                  1978
                                President and 1978 Controller for the Corporation.              
                                                                                                
Thomas S. Lenz .............    Mr. Lenz, born in 1937, is Senior Vice President and            1989
                                Chief Credit Administrator of WAB.                              
                                                                                                
Hans T. Y. Tjian ...........    Mr. Tjian, born in 1939, is Senior Vice President and           1989
                                Manager of the Operations and Systems Administration            
                                Division of WAB.                                                

</TABLE>

                                                                               
                          SECURITY OWNERSHIP OF CERTAIN
                        BENEFICIAL OWNERS AND MANAGEMENT

   Security Ownership of Certain Beneficial Owners. To the best knowledge of the
Corporation,  as of  February  3, 1997,  no person or entity was the  beneficial
owner of more than 5% of the Corporation's  outstanding  shares. For the purpose
of this  disclosure  and the  disclosure  of ownership  of shares by  management
below,  shares are  considered to be  "beneficially"  owned if the person has or
shares  the  power to vote or direct  the  voting  of the  shares,  the power to
dispose  of or direct the  disposition  of the  shares,  or the right to acquire
beneficial ownership (as so defined) within 60 days of February 3, 1997.


                                       5
<PAGE>

<TABLE>

   Security Ownership of Directors and Management. The following table shows the
number of common shares and the  percentage  of the common  shares  beneficially
owned  (as  defined  above)  by each of the  current  directors,  by each of the
nominees for election to the office of director,  by the Chief Executive Officer
and the  five  other  most  highly  compensated  executive  officers  and by all
directors and executive officers of the Corporation as a group as of February 3,
1997.

<CAPTION>

                                                  AMOUNT AND NATURE OF BENEFICIAL OWNERSHIP
                                      ------------------------------------------------------------------
                                         SOLE          SHARED          RIGHT TO
                                      VOTING AND     VOTING AND     ACQUIRE WITHIN                        PERCENT OF
                                      INVESTMENT     INVESTMENT       60 DAYS OF                          SHARES OF
             NAME                       POWER          POWER       FEBRUARY 3, 1997(1)         TOTAL(2)    CLASS(3)
             ----                       -----          -----       -------------------         --------    --------
<S>                                    <C>              <C>              <C>                   <C>           <C>  
Etta Allen(4) .....................      3,555                                                   3,555         *
Louis Bartolini ...................        600                                                     600         *
Charles I. Daniels, Jr.  ..........        698                                                     698         *
Donald Emerson ....................     22,550                                                  22,550         *
Arthur C. Latno, Jr.(5)  ..........      1,047                                                   1,047         *
Patrick D. Lynch ..................        500                                                     500         *
Catherine C. MacMillan ............        500                                                     500         *
Dwight H. Murray, Jr. .............     59,964                                                  59,964         *
Ronald A. Nelson(6) ...............     12,000                                                  12,000         *
Carl R. Otto ......................      2,000                                                   2,000         *
David L. Payne(7) .................    197,997           3,642            95,866               297,505       3.12%
Edward B. Sylvester ...............     27,589                                                  27,589         *
James M. Barnes(8) ................     13,480           2,018            31,683                47,181         *
Robert W. Entwisle(9) .............      8,099           2,627            30,866                41,592         *
Hans T. Y. Tjian(10) ..............     19,924           3,931            31,150                55,005         *
Charles L. Fritz(11) ..............     16,610           3,890            23,350                43,850         *
E. Joseph Bowler ..................     29,879           9,786            15,916                55,581         *
All 20 Directors and Officers
 as a Group .......................    421,295          35,251           266,162               722,708       7.44%
                                                                                                       

<FN>
- ---------------
*    Indicates that the percentage of the outstanding shares  beneficially owned
     is less than one percent (1%).
 (1) During  1995,  the  Corporation  adopted  the  Westamerica   Bancorporation
     Deferral Plan which allows recipients of restricted  performance  shares to
     defer the receipt of such shares into succeeding years. Includes restricted
     performance  shares  vesting on March 31, 1997,  whether or not deferred by
     the executive into the Westamerica Bancorporation Deferral Plan.
 (2) Includes directors' qualifying shares. 
 (3) In calculating the percentage of ownership, all shares which the identified
     person or  persons  have the right to acquire by  exercise  of options  are
     deemed to be outstanding for the purpose of computing the percentage of the
     class owned by such person,  but are not deemed to be  outstanding  for the
     purpose of computing the percentage of the class owned by any other person.
 (4) Includes 3,450 shares held in a trust as to which Mrs. Allen is trustee.
 (5) Includes  400  shares  owned by Mr.  Latno's  wife,  as to which Mr.  Latno
     disclaims beneficial ownership.
 (6) Includes  2,000 shares held in trust,  as to which Mr. Nelson is co-trustee
     with sole voting and investment power.
 (7) Includes  176,279 shares owned by Gibson Radio and Publishing  Company,  of
     which Mr. Payne is President and Chief Executive  Officer,  as to which Mr.
     Payne disclaims beneficial ownership.
 (8) Mr. Barnes served as Executive Vice President and Chief  Financial  Officer
     of the Corporation until his resignation in November 1996.
(9)  Includes  7,589  shares  held in a  trust,  as to  which  Mr.  Entwisle  is
     co-trustee with sole voting and investment power.
(10) Held in a trust,  as to which Mr. Tjian is co-trustee  with sole voting and
     investment power.
(11) Includes  1,350 shares  owned by Mr.  Fritz's  wife,  as to which Mr. Fritz
     disclaims beneficial ownership.
</FN>
</TABLE>


                                       6
<PAGE>

             SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

   Section  16(a) of the  Securities  Exchange  Act of  1934,  as  amended  (the
"Exchange Act") requires the Corporation's  directors and executive officers and
persons who own more than 10% of a registered class of the Corporation's  equity
securities to file with the Securities and Exchange  Commission  (the "SEC") and
the National  Association of Securities Dealers initial reports of ownership and
reports of changes in ownership of Common Stock and other equity  securities  of
the  Corporation.  Officers,  directors  and greater than 10%  shareholders  are
required by the SEC to furnish the Corporation  with copies of all Section 16(a)
forms they file.

   To the  Corporation's  knowledge,  based  solely on a review of the copies of
such reports  furnished to the Corporation and written  representations  that no
other reports were required, during the fiscal year ended December 31, 1996, all
Section 16(a) filing requirements applicable to its officers,  directors and 10%
shareholders were complied with.

                                       7
<PAGE>

<TABLE>
                             EXECUTIVE COMPENSATION

   The following Summary  Compensation  Table sets forth the compensation of the
Corporation's Chief Executive Officer and the five other most highly compensated
executive  officers for services in all capacities to the  Corporation,  WAB and
other subsidiaries during 1996, 1995 and 1994:


                           SUMMARY COMPENSATION TABLE


<CAPTION>
                                                                                                     ALL OTHER
                                                                                                     COMPENSA-
                                           ANNUAL COMPENSATION           LONG-TERM COMPENSATION        TION(4)
                         --------------------------------------------  --------------------------    ---------
        NAME AND                                                       RESTRICTED     SECURITIES
       PRINCIPAL                                                         STOCK        UNDERLYING
        POSITION         YEAR        SALARY      BONUS(1)    OTHER(2)   AWARDS(3)     OPTIONS(3)
        --------         ----        ------      --------    --------   ---------     ----------
<S>                      <C>       <C>          <C>          <C>        <C>              <C>          <C>    
David L. Payne,          1996      $272,016     $260,000     $ 3,365    $351,900         31,550       $     0
CEO                      1995       272,016      232,800       3,174     281,400         24,600        12,291
                         1994       272,016      200,000       2,379     174,038         27,050         8,367
                                                                                     
James M. Barnes,         1996      $149,040     $      0     $12,920    $135,700(5)       9,450       $ 9,000
EVP & CFO(6)             1995       149,040      115,200      12,847     100,500          5,900         9,000
                         1994       149,040      102,400      12,777      60,775          6,450         3,750
                                                                                     
Robert W. Entwisle,      1996      $134,280     $ 66,200     $13,510    $121,900          8,500       $ 9,500
SVP                      1995       134,280       70,000      15,179      90,450          5,300        12,142
                         1994       134,280       62,600      15,937      55,250          5,850         6,369
                                                                                     
Hans T. Y. Tjian,        1996      $130,008     $ 68,200     $14,970    $110,400(5)       7,650       $ 8,892
SVP                      1995       130,008       66,800      15,405      82,075          4,800         9,000
                         1994       130,008       66,600      16,230      44,200          5,250         3,750
                                                                                     
Charles L. Fritz,        1996      $120,960     $ 60,200     $15,530    $110,400(5)       7,650       $ 9,000
EVP & CCO                1995       120,960       59,800      15,260      82,075          4,800         9,000
                         1994       120,960       57,800      15,004      49,725          5,250         3,750
                                                                                     
E. Joseph Bowler         1996      $ 98,160     $ 49,600     $14,054    $ 78,200(5)       4,150       $ 9,000
SVP & Treasurer          1995        98,160       48,500      13,597      67,000          2,900         9,000
                         1994        98,160       46,700      14,892      33,150          3,200         3,750
                                                                                       
<FN>
- ------------
(1)  Includes bonuses in the year in which they were earned.
(2)  Includes  monthly auto allowance for each  individual  excluding Mr. Payne,
     and the amount of any taxable  perquisites  and split dollar life insurance
     for Mr. Payne in 1996, 1995 and 1994.
(3)  The Corporation grants restricted performance shares and nonqualified stock
     options in the first quarter of each year based on corporate performance in
     the prior  calendar  year.  These  grants are reported in the year in which
     they  were  granted.  As with  all  outstanding  shares  of  common  stock,
     dividends are paid on vested restricted performance shares. At December 31,
     1996, these individuals held the following unvested restricted  performance
     shares with the following  fair market  values,  based on a price of $57.75
     per share: Payne (25,050 shares valued at $1,446,638); Barnes (9,950 shares
     valued at $574,613);  Entwisle  (8,950  shares  valued at $516,863);  Tjian
     (8,050 shares valued at $464,888); Fritz (8,050 shares valued at $464,888);
     and Bowler  (5,250 shares  valued at  $303,188).  The following  table sets
     forth  the  restricted  performance  share  grants  which  were made on the
     following dates to the named individuals:

                          JANUARY 26, 1994             JANUARY 25, 1995              JANUARY 24, 1996
                     MARKET PRICE: $28.06/SHARE   MARKET PRICE: $30.75/SHARE   MARKET PRICE: $46.375/SHARE
                     --------------------------   --------------------------   ---------------------------
                                                                       
      David L. Payne           9,350                        8,450                         7,250
      James M. Barnes          3,600                        3,300                         3,050
      Robert W. Entwisle       3,250                        2,950                         2,750
                                                                                      
      Hans T. Y. Tjian         2,950                        2,650                         2,450
      Charles L. Fritz         2,950                        2,650                         2,450
      E. Joseph Bowler         2,050                        1,850                         1,350
                                                                                      
(4)  Includes 1996 matching contributions made by the Corporation under the WABC
     Tax Deferred  Savings/Retirement  Plan ("ESOP") for the accounts of Messrs.
     Payne,   Barnes,   Entwisle,   Tjian,   Fritz  and  Bowler   of:   Payne-0;
     Barnes-$9,000;    Entwisle-$9,500;    Tjian-$8,892;    Fritz-$9,000;    and
     Bowler-$9,000.
(5)  Messrs.  Barnes,  Tjian,  Fritz and Bowler  deferred  the  receipt of their
     restricted stock awards into the Deferral Plan.
(6)  Mr. Barnes served as Executive Vice President and Chief  Financial  Officer
     of the Corporation until his resignation in November 1996.

</FN>
</TABLE>

                                       8
<PAGE>

<TABLE>

   The following  table describes  stock options and stock  appreciation  rights
("SARs") that were granted pursuant to the Westamerica Bancorporation 1995 Stock
Option Plan (the "1995 Stock Option Plan") to the Corporation's  Chief Executive
Officer and the five other most  highly  compensated  executive  officers in the
fiscal year ended  December 31,  1996.  All of these grants were made on January
24, 1996, based on achievement of 1995 corporate performance objectives.

                      OPTION/SAR GRANTS IN LAST FISCAL YEAR

<CAPTION>
                             NUMBER          PERCENT                         
                          OF SECURITIES      OF TOTAL                                             GRANT
                           UNDERLYING    OPTIONS GRANTED                                           DATE
                             OPTIONS     TO ALL EMPLOYEES      EXERCISE       EXPIRATION         PRESENT
       NAME                GRANTED(1)     IN FISCAL YEAR        PRICE            DATE             VALUE(2)
       ----                ----------     --------------        -----            ----             --------
<S>                          <C>               <C>             <C>             <C>              <C>     
David L. Payne ...........   31,550            19%             $46.375         01/24/2006       $324,334
James M. Barnes  .........    9,450             6               46.375         01/24/2006         97,146
Robert W. Entwisle........    8,500             5               46.375         01/24/2006         87,380
Hans T. Y. Tjian  ........    7,650             5               46.375         01/24/2006         78,642
Charles L. Fritz  ........    7,650             5               46.375         01/24/2006         78,642
E. Joseph Bowler  ........    4,150             3               46.375         01/24/2006         42,662
                                                                                           
<FN>
- -----------
(1)  All options are  nonqualified  stock  options  which vest over a three-year
     period:  1/3 one year after grant date, 2/3 two years after grant date, and
     fully three years from grant date. All options have an exercise price equal
     to  the  market  value  on the  date  of  grant.  The  terms  of all of the
     Corporation's   stock  option   plans   provide  that  options  may  become
     exercisable  in full in the event of a change of control as defined in each
     stock option plan.
(2)  A Black-Scholes option pricing model using standard assumptions,  including
     15% annual  divided  growth,  a risk-free  rate equal to the six-year  U.S.
     Treasury yield of 5.40%, volatility of 17% and a six-year maturity was used
     to derive the per share option value of $10.28.
</FN>
</TABLE>

<TABLE>

   The following  table sets forth the stock  options or SARs  exercised in 1996
and the December 31, 1996  unexercised  value of both vested and unvested  stock
options  and SARs for the  Corporation's  Chief  Executive  Officer and the five
other most highly compensated executive officers.


             AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND
                            DECEMBER 31, 1996 VALUES

<CAPTION>
                                                                             NUMBER OF SECURUTIES
                                                                            UNDERLYING UNEXERCISED           VALUE OF UNEXERCISED
                                                                               OPTIONS/SARS AT            IN-THE-MONEY OPTIONS/SARS
                                         SHARES                                DECEMBER 31, 1996            AT DECEMBER 31, 1996(1)
                                        ACQUIRED         VALUE          -----------------------------   ----------------------------
   NAME                                ON EXERCISE      REALIZED        EXERCISABLE     UNEXERCISABLE   EXERCISABLE    UNEXERCISABLE
   ----                                -----------      --------        -----------     -------------   -----------    -------------
<S>                                      <C>             <C>               <C>               <C>            <C>            <C>    
David L. Payne ...............             --         $     --             58,783           56,967       $1,968,681     $1,069,396
James M. Barnes ..............           15,548          448,775           20,816           15,534          735,924        277,545
Robert W. Entwisle ...........            6,975          166,356           21,066           13,984          744,848        250,001
Hans T. Y. Tjian .............             --               --             22,300           12,600          806,640        225,376
Charles L. Fritz .............             --               --             14,500           12,600          496,590        225,376
E. Joseph Bowler .............           11,662          318,480           10,449            7,151          361,180        131,103

<FN>
- -----------
(1)  Fair market value of the Corporation's Common Stock was $57.75 per share on
     December 31, 1996.
</FN>
</TABLE>

                               OTHER ARRANGEMENTS

CERTAIN EMPLOYMENT CONTRACTS

   WAB entered into employment agreements with Mr. Entwisle and Mr. Bowler, each
dated January 7, 1987.  The  agreements  of these  individuals  are  essentially
identical except for salary.  Mr.  Entwisle's annual base salary is $134,280 and
Mr. Bowler's is $98,160. The agreements are "evergreen" in the sense

                                       9
<PAGE>

that the term of the  agreement is  automatically  extended  for one  additional
month upon  completion of each additional  month of employment  unless WAB gives
Mr. Entwisle or Mr. Bowler one year's notice of intent to terminate.

   WAB may terminate each of these executive's employment without cause and each
of these  executives  may terminate his employment for "good reason," as defined
in the  agreements.  Under such  circumstances,  however,  Messrs.  Entwisle and
Bowler  each would be  entitled  to  severance  pay equal to the sum of: (i) one
times his base salary;  (ii) his maximum  bonus(es) had he remained employed one
additional year past the date of  termination;  and (iii) an amount equal to his
automobile allowance for the one year preceding the date of termination.

   The agreements with Messrs.  Entwisle and Bowler also provide for the payment
to the executive of  liquidated  damages upon  termination  of employment by WAB
without cause or termination by the executive for "good reason." Under the terms
of the agreements,  the amount of liquidated damages is reduced by any severance
pay received by the  executive and the executive is under a duty to mitigate his
damages.

   Hans T. Y. Tjian  accepted a position  with WAB as Senior Vice  President and
Manager of Operations and Systems  Administration under the terms set forth in a
letter  agreement dated April 14, 1989.  Under the terms of this agreement,  Mr.
Tjian is entitled to: (i) receive an annual  salary of $130,000;  (ii) receive a
car allowance of $1,000 per month;  (iii)  participate in WAB's  executive bonus
plan; (iv) participate in the Corporation's  stock option plan; and (v) vacation
leave. In addition,  Mr. Tjian is entitled to receive severance pay equal to his
annual base salary for one year if his position is  eliminated  as a result of a
change of control.

                     BOARD COMPENSATION COMMITTEE REPORT

   The  Board,   operating   through  its  Employee  Benefits  and  Compensation
Committee,  has  established  an executive  compensation  program and determines
annual  compensation  for  executives  based  on  performance.   This  executive
compensation  program and annual  evaluation  process  establishes a competitive
base  salary for each  executive  and offers  incentive  compensation  which can
provide  additional   compensation  if  established   performance  measures  are
achieved.  This additional  compensation can be in the form of short-term annual
cash  bonuses,  long-term  stock options and  long-term  restricted  performance
shares.

   As described in the Summary  Compensation  Table above,  each named executive
receives a monthly base salary, and is eligible to receive an annual cash bonus,
an annual grant of stock options and an annual grant of  restricted  performance
shares.  Corporate  performance  measures are established each year based on the
Corporation's  objectives.  The extent to which these  objectives  are  achieved
determines if and what size the annual option grants and restricted  performance
share grants will be.  Achievement  of these annual  performance  measures  also
determines between 55% and 80% of the annual cash bonus to be paid to each named
executive,  with the remaining 45% to 20%  determined by individual and division
performance.

   Corporate  performance  measures for 1996, which determined January 1997 cash
bonuses, option grants and restricted performance share grants were to:

   o  reach target levels of return on equity, return on assets and earnings per
      share;

   o  finish  construction  of a  new  facility  in  Fairfield,  California  and
      relocate  the  administrative  and  operations  departments  to  that  new
      facility;

   o  maintain credit quality measures at established levels;

   o  hold   noninterest   expenses   below  a  specified   level  and  maintain
      satisfactory audit results; and

   o  improve assets per employee and revenues per employee to specified levels.


                                       10
<PAGE>

   Corporate  performance  measures for 1995, which determined January 1996 cash
bonuses, option grants and restricted performance share grants were to:

   o  successfully  merge PV  Financial,  CapitolBank  Sacramento  and North Bay
      Bancorp into the Corporation;

   o  reach target levels of return on equity, return on assets and earnings per
      share;

   o  maintain credit quality measures at established levels;

   o  hold   noninterest   expenses   below  a  specified   level  and  maintain
      satisfactory audit results; and

   o  improve assets per employee and revenues per employee to specified levels.

   Additional  corporate  performance  objectives  for a  three-year  period are
established  by the Employee  Benefits and  Compensation  Committee to accompany
each grant of  restricted  performance  shares.  Whether  each grant vests three
years following the grant is determined by achievement of these  preestablished,
three-year performance objectives.

   The Chief Executive Officer's base salary in 1996 of $272,016 was established
at a level judged to be competitive with comparable positions at other financial
institutions.  The Chief Executive  Officer's $260,000 cash bonus earned in 1996
(included in the Summary Compensation Table listed above) and paid in January of
1997,  was related 80% to the  achievement  of the 1996  corporate  goals listed
above  and  20%  to  achievement  of  individual  management  goals.  Individual
management goals achieved in 1996 included  satisfactory results from regulatory
examinations,  satisfactory  internal  controls  and  satisfactory  progress  on
acquisitions.  Compared  to the 1996  corporate  objectives  listed  above,  the
Corporation:

   o  exceeded  its  targeted  profitability  objectives,  including  return  on
      equity, return on assets and earnings per share;

   o  successfully  completed the  construction  of a new facility in Fairfield,
      California and relocated the administrative and operations  departments to
      that new facility;

   o  improved credit quality measures to better than established levels;

   o  outperformed noninterest expense and control goals; and

   o  improved  efficiency  and  productivity  measures to better than  targeted
      levels.

   The Chief  Executive  Officer's  receipt,  pursuant to the 1995 Stock  Option
Plan,  of 31,550  nonqualified  stock options and 7,250  restricted  performance
shares  in  January  1996 was  related  to  achievement  of the  1995  corporate
performance  measures  listed above.  Compared to the 1995 corporate  objectives
listed above, the Corporation:

   o  successfully completed three mergers;

   o  exceeded its targeted profitability goals;

   o  improved credit quality measures to better than established levels;

   o  outperformed noninterest expense and control goals; and

   o  improved efficiency measures to better than targeted levels.

 Other

   In 1993, the Internal Revenue Code ("IRC") was amended to add section 162(m).
Section 162(m) places a limit of $1,000,000 on the amount of  compensation  that
may be deducted by the  Corporation  in any year with  respect to certain of the
Corporation's  highest paid  executives.  The Corporation  intends  generally to
qualify compensation paid to executive officers for deductibility under the IRC,
including section 162(m).

   The Employee Benefits and Compensation  Committee believes that the foregoing
compensation  programs and policies provide  competitive levels of compensation,
encourage long-term  performance and promote management  retention while further
aligning  shareholders'  and  managements'  interests in the  performance of the
Corporation and the Corporation's Common Stock.

   Members of the Employee Benefits and Compensation Committee as of January
25, 1997 are: Patrick D. Lynch, Chairman, Etta Allen, Don Emerson, Arthur C.
Latno, Jr., Catherine Cope MacMillan and Ronald A. Nelson.


                                       11
<PAGE>


                         STOCK PERFORMANCE CHART(1)

[The following  descriptive  data is supplied in accordance  with Rule 304(d) of
Regulation S-T]

                               1991     1992     1993     1994     1995     1996
                               ----     ----     ----     ----     ----     ----

Westamerica Bancorporation     100       122      144      160      238      323
Western Bank Monitor(2)        100       110      132      136      195      241
S&P 500 Index                  100       108      118      120      165      203



(1)  Assumes  $100  invested on December  31, 1991 in the  Corporation's  Common
     Stock,  the S&P 500 composite stock index and SNL Securities'  Western Bank
     Monitor index, with reinvestment of dividends.

(2)  Source:  SNL  Securities.  While the  source of the index of  Western  bank
     stocks  utilized  in last  year's  proxy  statement  has  discontinued  its
     preparation of such index,  the index  utilized  above  references the same
     comparison group of Western banks as in prior years.


                              APPROVAL OF AUDITORS

   The Board has selected KPMG Peat Marwick LLP as  independent  auditor for the
Corporation  for  the  1997  fiscal  year,   subject  to  the  approval  of  the
shareholders. KPMG Peat Marwick LLP has informed the Corporation that it has had
no  connection  during  the  past  three  years  with  the  Corporation  or  its
subsidiaries in the capacity of promoter, underwriter, voting trustee, director,
officer or employee.

   Representatives  of KPMG Peat Marwick LLP will be present at the Meeting with
the  opportunity  to make a statement  if they desire to do so and to respond to
appropriate questions.


                                       12
<PAGE>

                              SHAREHOLDER PROPOSAL

SHAREHOLDER'S PROPOSAL TO CHANGE METHOD OF COMPENSATING THE DIRECTORS OF THE
CORPORATION

   The  Corporation  has  been  advised  that  Mr.  Emil  Rossi,  P.O.  Box 249,
Boonville,  California  95415 intends to present a proposal at the Meeting.  Mr.
Rossi is the custodian of 400 shares of the Corporation's Common Stock held by a
minor  under the  Uniform  Gift to  Minors  Act.  The  proposal  and  supporting
statement submitted by Mr. Rossi are set forth below and have not been edited by
the Corporation. The Board opposes the proposal for the reasons stated below.

SHAREHOLDER PROPOSAL

   The  shareholders of WestAmerica  Corporation  request the Board of Directors
take the necessary steps to amend the company's  governing  instruments to adopt
the following:  

      Beginning on the 1998 WestAmerica  Corporation  fiscal year all members of
   the  Board of  Director's  total  compensation  will be  solely  in shares of
   WestAmerica  Corporation common stock each year. No other compensation of any
   kind will be paid.  Including,  the  elimination  of  retirement  benefits to
   directors, excluding existing contracts with directors.

SHAREHOLDER'S SUPPORTING STATEMENT

      For many years the Rossi family have been submitting for shareholder vote,
   at this corporation as well as other corporations, proposals aimed at putting
   management on the same playing field as the shareholders. This proposal would
   do just that.

      A few  corporations  have seen the  wisdom in paying  directors  solely in
   stock.  Most  notably,  Scott  Paper  (now  Kimberly  Clark)  and  Travelers.
   Ownership  in the  company is the  American  way. We feel that this method of
   compensation  should be welcomed by anyone who feels they have the ability to
   direct a major corporation's fortunes.

      The directors  would receive  shares each year.  If the  corporation  does
   well,  the  directors  will  make more  money in the value of the stock  they
   receive and the dividend  that usually rise with more  profits.  If things go
   bad,  they will be much more inclined to correct  things,  because it will be
   coming  directly  out of their  pockets.  Instead  of the way it is done now,
   where directors receive the same compensation for good or bad performance.

BOARD OF DIRECTORS' STATEMENT IN OPPOSITION TO SHAREHOLDER PROPOSAL

   The Board recommends that the shareholders vote AGAINST this proposal.

   The Board  shares the  proponent's  belief in the  desirability  of  director
ownership of stock in the  Corporation  and agrees that the  shareholders of the
Corporation  deserve a Board which is  accountable  to the  Corporation  and its
shareholders.  The  Board  believes,  however,  that the  Corporation's  current
compensation  package for its  directors  encourages  and  mandates  the type of
accountability  that the  shareholder  desires,  while providing the Corporation
with the flexibility to enable it to make a determination of the optimum form of
compensation  for  directors  necessary  in order to attract and retain the most
qualified individuals possible.

   The Board  believes  the  Stock  Performance  Chart on page 12 of this  Proxy
Statement  illustrates that the Board has  successfully  managed the Corporation
with the interests of the  shareholders  in mind.  Moreover,  well settled legal
standards  concerning  the  duties of  directors  to manage  the  affairs of the
Corporation  on a basis  believed  by  them,  in good  faith,  to be in the best
interests of the Corporation and its shareholders  already provide the framework
for the proper performance of each director's duties.

   The  Corporation's  directors include men and women who are leaders in a wide
range of business fields.  The experience and varied  perspectives they bring to
the Board's  deliberations  are  critical in making  informed,  reasoned  policy
decisions on the diverse and complex  issues with which the Board must deal.  In
order for the Corporation to attract and retain highly qualified  individuals to
serve on the Board, the Corporation believes it must provide compensation to its
directors commensurate with that which is provided by other public companies.


                                       13
<PAGE>

   In California, the majority of public corporations compensate their directors
with cash payments as well as other benefits. During 1996, each of the directors
of the  Corporation  received an annual retainer of $14,000.  In addition,  each
director  received $1,000 for each meeting of the Board that he or she attended.
Nonemployee  directors received $500 for each committee meeting attended and the
chairman  of each  committee  received  an  additional  $250 for each  committee
meeting attended.  As Chairman of the Board, David L. Payne is compensated as an
employee  and does  not  receive  any  annual  retainer  or  director's  fee for
attending Board or committee  meetings.  As an employee of the Corporation,  Mr.
Payne is entitled to receive certain retirement benefits; however, no retirement
benefits are paid to any of the nonemployee directors of the Corporation.

   The average  outside  director  spends  12-20 hours per month on  Corporation
matters (the hours vary  depending upon the number of committees a director is a
member of),  and travels 12 times  (meetings  are monthly) per year to Board and
committee meetings (the Board and the various committee meetings take place over
a two-day period).  Since the time a director spends on Corporation  matters and
travel is time away from that director's principal  occupation or business,  the
Corporation  compensates  its  directors in cash  payments just as a shareholder
would  expect to be  compensated  for  services  which he or she  provides  to a
business employing him or her.

   The Board  believes that the existing  compensation  package for directors is
fair and  appropriate  in  light  of the  obligations  and  responsibilities  of
corporate  directors.  The shareholder's  proposal would limit the Corporation's
ability to provide compensation to directors competitive with that paid by other
public corporations and would, as a result,  limit the Corporation's  ability to
attract  and  retain  highly  qualified  individuals  to serve as members of its
Board.

   THE BOARD THEREFORE RECOMMENDS A VOTE AGAINST THE ABOVE SHAREHOLDER PROPOSAL.


                                  OTHER MATTERS

   Management of the Corporation does not know of any matters to be presented at
the  Meeting  other than those  specifically  referred  to herein.  If any other
matters should properly come before the Meeting or any adjournment  thereof, the
persons named in the enclosed  proxy intend to vote thereon in  accordance  with
their best business judgment.

   For a matter to be  properly  brought  before the  Meeting by a  shareholder,
section 2.02 of the  Corporation's  Bylaws  ("Section  2.02")  provides that the
shareholder must deliver or mail a written notice to the Secretary (or Assistant
Secretary) of the  Corporation not less than 14 days nor more than 50 days prior
to the Meeting.  Section 2.02 also provides that the notice must set forth as to
each matter that the  shareholder  proposes to bring  before the Meeting a brief
description  of the  business  desired to be brought  before the Meeting and the
reasons for  conducting  such  business at the Meeting,  the name and  residence
address of the  shareholder  proposing such business,  the number of shares that
are owned by the  shareholder  and any material  interest of the  shareholder in
such business.

   The cost of the solicitation of proxies in the accompanying form,  including,
but not limited to, the cost of a proxy  solicitation firm, will be borne by the
Corporation.  The  Corporation  has retained the services of Corporate  Investor
Communications,  Inc. to assist in the  solicitation of proxies at a cost not to
exceed $4,000 plus  reasonable  out-of-pocket  expenses.  The  Corporation  will
reimburse  banks,  brokers and others  holding  stock in their names or names of
nominees or otherwise for reasonable  out-of-pocket expenses incurred in sending
proxies and proxy materials to the beneficial  owners of such stock. 

                                             BY ORDER OF THE BOARD OF 
                                             DIRECTORS

                                             /s/ Mary Anne Bell

                                             Mary Anne Bell
                                             Assistant Corporate Secretary


Dated: March 20, 1997


                                       14
<PAGE>



PROXY                     WESTAMERICA BANCORPORATION                       PROXY

                             VOTING INSTRUCTIONS 
       TO THE TRUSTEE SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF 
                          WESTAMERICA BANCORPORATION 

           FOR THE ANNUAL MEETING OF SHAREHOLDERS ON APRIL 22, 1997 

   The  undersigned  holder hereby  authorizes  and instructs the Trustee of the
Westamerica Bancorporation Tax Deferred Savings/Retirement Plan to represent and
vote,  as  designated   below,   all  shares  of  Common  Stock  of  Westamerica
Bancorporation  which the  undersigned  would be  entitled to vote at the Annual
Meeting of Shareholders of said corporation to be held at the Showcase  Theatre,
Marin Center, San Rafael, California at 7:30 p.m. on Tuesday, April 22, 1997 and
any postponement or adjournment thereof.

   These voting  instructions to the Trustee,  when properly  executed,  will be
voted as directed herein by the undersigned shareholder.  IF NO INSTRUCTIONS ARE
RECEIVED,  THE TRUSTEE WILL VOTE ALL OF THE SHARES FOR WHICH YOU ARE ENTITLED TO
PROVIDE  INSTRUCTION IN THE SAME PROPORTION AS SHARES FOR WHICH INSTRUCTIONS ARE
RECEIVED.  The Trustee may vote  according to its discretion on any other matter
which may properly come before the meeting.

      PLEASE MARK, SIGN, DATE AND MAIL THESE VOTING INSTRUCTIONS PROMPTLY,
                          USING THE ENCLOSED ENVELOPE.

                (Continued, and to be signed on the other side)

<PAGE>

                                                               [ X ] Please mark
                                                                      your votes
                                                                       as this

THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEM 1. 

                                                    WITHHOLD
                                            FOR      FOR ALL
Item 1--ELECTION OF DIRECTORS              [   ]      [   ]
        Etta Allen, Louis E. Bartolini, 
        Charles I. Daniels, Jr., Don 
        Emerson, Arthur C. Latno, Jr., 
        Patrick D. Lynch, Catherine C. MacMillan, Ronald A. Nelson, 
        Carl R. Otto, David L. Payne, Edward B. Sylvester 

WITHHELD FOR: (Write that nominee's name in the 
space provided below). 

- ----------------------------------------------------------------------------- 

                                                      
THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEM 2.  

                                                       FOR    AGAINST   ABSTAIN
Item 2--APPROVAL OF AUDITORS.                         [   ]    [   ]     [   ] 


THE BOARD OF DIRECTORS RECOMMENDS A VOTE AGAINST ITEM 3. 

                                                       FOR    AGAINST   ABSTAIN 
Item 3--SHAREHOLDER'S PROPOSAL CONCERNING CHANGING    [   ]    [   ]     [   ]  
        METHOD OF COMPENSATION FOR DIRECTORS.                  
      

                                     I PLAN TO ATTEND MEETING         [   ]
                                 If you check this box to the right 
                               an admission card will be sent to you. 


SIGNATURES(S)________________________________________       DATE________________
NOTE:  PLEASE SIGN AS NAME APPEARS  HEREON.  JOINT OWNERS SHOULD EACH SIGN. WHEN
SIGNING AS ATTORNEY, EXECUTOR,  ADMINISTRATOR,  TRUSTEE OR GUARDIAN, PLEASE GIVE
FULL TILE AS SUCH.
Receipt is acknowledged  of the Proxy Statement for the meeting.  Whether or not
you  expect to attend the  meeting,  you are urged to  execute  and return  this
Proxy, which may be revoked at any time prior to its use.

- --------------------------------------------------------------------------------
                              FOLD AND DETACH HERE

[GRAPHIC OMITTED]             WESTAMERICA BANCORPORATION

                                                                  March 20, 1997
Dear Participant:
 
   As  a   participant   in  the   Westamerica   Bancorporation   Tax   Deferred
Savings/Retirement Plan (the "Plan"), you have an interest in the Annual Meeting
of  Shareholders  of Westamerica  Bancorporation  which will be held on Tuesday,
April 22,  1997 (the  "Meeting").  You may direct the Trustee of the Plan how to
vote all full and fractional shares of Westamerica Bancorporation stock standing
to the credit of your individual  account(s) (from the  Supplemental  Retirement
Plan Account,  Employer Matching Contributions and Employee Contributions) as of
December 31, 1996, and your pro rata share of any unallocated shares held by the
Plan as of February 28, 1997.

   For your information,  we have enclosed a copy of the Proxy Statement and the
Annual  Report  supplied to  shareholders  of  Westamerica  Bancorporation.  The
enclosed  Proxy  Statement  describes  three  proposals  to be  voted  on by the
shareholders  of  Westamerica  Bancorporation  at  the  Meeting.  The  Board  of
Directors of Westamerica  Bancorporation recommends a vote FOR PROPOSALS 1 AND 2
and  AGAINST  PROPOSAL  3.  Please  instruct  the  Trustee  how to vote on these
proposals by indicating your selection on the above Proxy.

   If the Trustee  does not  receive  written  instructions  from you before the
close of  business on April 15,  1997,  it will vote all of the shares for which
you are entitled to provide  instruction  in the same  proportion  as shares for
which  instructions  are received.  Under the terms of the Plan, with respect to
fractional  shares in plan  accounts  (from  the  Supplemental  Retirement  Plan
Account,  Employer  Matching  Contributions  and  Employee  Contributions),  the
Trustee may pool the results of instructions  received from all  participants to
whom fractional shares have been allocated and vote such shares accordingly.

   The Trustee may also use its discretion in voting on any other business which
may properly be brought before the Meeting (or any adjournment thereof) that was
not specified in the Notice of Annual Meeting of  Shareholders.  Please instruct
the  Trustee how to vote your  shares.  A return  envelope is enclosed  for your
convenience.

                                        Sincerely yours, 

                                        /s/ Mary Anne Bell 

                                        Mary Anne Bell 
                                        Assistant Corporate Secretary 



<PAGE>

                                                                      


PROXY                     WESTAMERICA BANCORPORATION                       PROXY

             PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF
                           WESTAMERICA BANCORPORATION

            FOR THE ANNUAL MEETING OF SHAREHOLDERS ON APRIL 22, 1997

   The  undersigned  holder hereby  authorizes  A. Latno,  Jr., R. Nelson and E.
Sylvester,  each with full power of  substitution,  to  represent  and vote,  as
designated  on the  reverse  side,  all  shares of Common  Stock of  Westamerica
Bancorporation  which the  undersigned  would be  entitled to vote at the Annual
Meeting of Shareholders of said corporation to be held at the Showcase  Theatre,
Marin Center,  San Rafael,  California at 7:30 p.m. on Tuesday,  April 22, 1997,
upon the matters set forth on the reverse  side of this Proxy and  described  in
the  accompanying  Proxy  Statement and upon such other business as may properly
come before the meeting or any postponement or adjournment thereof.

   This Proxy, when properly  executed,  will be voted as directed herein by the
undersigned shareholder.  IF NO DIRECTION IS INDICATED, THIS PROXY WILL BE VOTED
FOR ALL NOMINEES, FOR ITEM 2 AND AGAINST ITEM 3.

              PLEASE MARK, SIGN, DATE AND MAIL THIS PROXY PROMPTLY,
                          USING THE ENCLOSED ENVELOPE.

- ------------------------------------
COMMENTS/ADDRESS CHANGE 



                (Continued, and to be signed on the other side)

<PAGE>

                                                               [ X ] Please mark
                                                                      your votes
                                                                       as this


THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEM 1. 

Item 1--ELECTION OF DIRECTORS               WITHHOLD 
Etta Allen, Louis E. Bartolini,     FOR      FOR ALL 
Charles I. Daniels, Jr., Don       [   ]      [   ]  
Emerson, Arthur C. Latno, Jr.,    
Patrick D. Lynch, Catherine C. MacMillan, Ronald A. Nelson, 
Carl R. Otto, David L. Payne, Edward B. Sylvester 

WITHHELD FOR: (Write that nominee's name in the 
space provided below). 

- ----------------------------------------------------------------------------- 


THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEM 2. 

                                                        FOR    AGAINST   ABSTAIN
Item 2--APPROVAL OF AUDITORS.                          [   ]    [   ]     [   ] 
                                                       

THE BOARD OF DIRECTORS RECOMMENDS A VOTE AGAINST ITEM 3. 

                                                        FOR    AGAINST   ABSTAIN
Item 3--SHAREHOLDER'S PROPOSAL CONCERNING CHANGING     [   ]    [   ]     [   ] 
        METHOD OF COMPENSATION FOR DIRECTORS.          
                                                        


                                     I PLAN TO ATTEND MEETING              [   ]
                                 If you check this box to the right 
                               an admission card will be sent to you. 

                                   Discontinue mailing Annual Report       [   ]
                                      subject to Proxy regulations.  

                                     I have made an address change         [   ]
                             or comment on the reverse side of this Proxy.



SIGNATURES(S)________________________________________       DATE________________
NOTE:  PLEASE SIGN AS NAME APPEARS  HEREON.  JOINT OWNERS SHOULD EACH SIGN. WHEN
SIGNING AS ATTORNEY, EXECUTOR,  ADMINISTRATOR,  TRUSTEE OR GUARDIAN, PLEASE GIVE
FULL TILE AS SUCH.
Receipt is acknowledged  of the Proxy Statement for the meeting.  Whether or not
you  expect to attend the  meeting,  you are urged to  execute  and return  this
Proxy, which may be revoked at any time prior to its use.

- --------------------------------------------------------------------------------
                              FOLD AND DETACH HERE

                       MEETING TICKET REQUEST INSTRUCTIONS

                           WESTAMERICA BANCORPORATION
                         ANNUAL MEETING OF SHAREHOLDERS

                       7:30 P.M., TUESDAY, APRIL 22, 1997

                       THE SHOWCASE THEATRE, MARIN CENTER
                             SAN RAFAEL, CALIFORNIA

You can avoid registration lines by obtaining tickets in advance. If you plan to
attend the Meeting, please mark the "I Plan to Attend Meeting" box on your Proxy
and return it in the  enclosed  pre-addressed  return  envelope  to  Westamerica
Bancorporation,  c/o ChaseMellon Shareholder Services, Proxy Processing,  Church
St. Station, P.O. Box 1520, New York, NY 10277-1520. You will be mailed a ticket
entitling admission for two people.

- --------------------------------------------------------------------------------

Because of seating limitations,  your ticket is valid for admission of up to two
people. If you desire additional tickets, please call Westamerica Bancorporation
at (415) 257-8026. 


                    DO NOT RETURN THIS CARD WITH YOUR PROXY

<PAGE>

- --------------------------------------------------------------------------------
                               SHAREHOLDER/GUEST
- --------------------------------------------------------------------------------

This is your  ticket  for  the  Westamerica  Bancorporation  Annual  Meeting  of
Shareholders, 7:30 P.M., Tuesday, April 22, 1997, at the Showcase Theatre, Marin
Center, San Rafael, California. With your ticket you can bypass the registration
process and go directly into the meeting.

Only  shareholders  of record as of February 28,  1997,  or their  proxies,  may
address the meeting.

Thank you for your interest in  Westamerica  Bancorporation.  We look forward to
seeing you on April 22nd.


                                   ADMITS TWO

Please indicate number attending ________

<PAGE>
                                 MEETING TICKET

WESTAMERICA BANCORPORATION
Attn: Corporate Secretary
1108 Fifth Avenue
San Rafael, CA 94901




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