SANTA BARBARA BANCORP
S-4, 1998-09-23
STATE COMMERCIAL BANKS
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   As filed with the Securities and Exchange Commission on September 23, 1998
                                                     Registration No. 333-______
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                 -----------------------------------------------
                                    Form S-4
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                -------------------------------------------------
                              SANTA BARBARA BANCORP
             (Exact name of registrant as specified in its charter)

<TABLE>
<CAPTION>
<S>                                                <C>                                    <C>  

                   California                                   6022                                   95-3673456
(State or other jurisdiction of incorporation or    (Primary Standard Industrial          (I.R.S. Employer Identification No.)
                 organization)                          Classification No.)
                                                         1021 Anacapa Street
                                                   Santa Barbara, California 93101
                                                           (805) 564-6298
     (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

                                                         Jay D. Smith, Esq.
                                                         1021 Anacapa Street
                                                   Santa Barbara, California 93101
                                                           (805) 564-6310
          (Name, address, including zip code, and telephone number, including area code, of agent for service)

                                                             Copies to:
                          CHARLES E. GREEF, ESQ.                                           JAMES E. TOPINKA, ESQ.
                           Jenkens & Gilchrist,                                         Preston Gates & Ellis, LLP
                        a Professional Corporation                                           One Maritime Plaza
                       1445 Ross Avenue, Suite 3200                                              Suite 2400
                            Dallas, Texas 75202                                       San Francisco, California  94111            
                               (214) 855-4500                                                  (415) 788-8822
</TABLE>

         Approximate  date of  commencement  of proposed sale to the public:  As
soon as practicable after the effective date of this Registration Statement.
         If the  Securities  being  registered on this Form are being offered in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box: [ ]
         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. [ ]
         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(d) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. [ ]
                                    
                              ---------------------

<TABLE>
<CAPTION>
<S>                                 <C>                  <C>                      <C>                    <C> 

                         CALCULATION OF REGISTRATION FEE

                                                           Proposed maximum        Proposed maximum
     Title of each class of              Amount to          offering price            aggregate              Amount of
   securities to be registered         be registered         per unit (2)           offering price       registration fee
- ---------------------------------  --------------------- ---------------------  ---------------------- ---------------------
Common Stock, no par value.......   9,345,000 shares(1)        $22.53              $210,505,000 (2)          $62,100
=================================  ===================== =====================  ====================== =====================
<FN>
(1)   Based upon the expected  maximum  number of shares of common  stock of the
      Registrant issuable to holders of common stock of Pacific Capital Bancorp,
      a California  corporation  ("Pacific"),  in the proposed merger of Pacific
      into the Registrant.
(2)   Estimated  solely for the purpose of calculating the  registration  fee in
      accordance with Rule 457 (c) and (f)(1) under the  Securities Act of 1933,
      as amended (the  "Securities  Act"),  based  upon the market  value  as of
      September 17, 1998 of all shares of Pacific common stock to be acquired by
      the Registrant in the transaction described herein.
</FN>
</TABLE>



     The Registrant  hereby amends this  Registration  Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a  further  amendment  that  specifically  states  that  this  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the Securities Act  of 1933 or  until the  Registration  Statement shall  become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.



<PAGE>



                             Pacific Capital Bancorp
                              307 South Main Street
                            Salinas, California 93901

                                                              November ___, 1998
TO THE SHAREHOLDERS OF
PACIFIC CAPITAL BANCORP:

         You are cordially  invited to attend a Special  Meeting of Shareholders
of Pacific  Capital  Bancorp  ("Pacific") to be held at Corral de Tierra Country
Club, 81 Corral de Tierra Road, Salinas, California, at ______ p.m., local time,
on ____________, December ___, 1998 (the "Pacific Meeting").

         At the Pacific  Meeting,  you will be asked to consider and vote upon a
proposal  to approve  and adopt an  Agreement  and Plan of  Reorganization  (the
"Reorganization  Agreement"),  dated as of July 20, 1998, by and between Pacific
and Santa  Barbara  Bancorp  ("SBB") and a related  Agreement and Plan of Merger
(the  "Merger   Agreement")   between   Pacific  and  SBB   (collectively,   the
"Agreements"),  and the  transactions  contemplated  thereby,  pursuant to which
Pacific will be merged with and into SBB, with SBB as the surviving  corporation
to be operated with the resulting name "Pacific Capital Bancorp" (the "Merger").
The  Merger  is  more  fully   described   in  the   accompanying   Joint  Proxy
Statement/Prospectus.  Copies of the  Agreements are attached to the Joint Proxy
Statement/Prospectus  as Appendix A and  Appendix B. No other  business  will be
transacted at the Pacific  Meeting other than matters  incidental to the conduct
of the Pacific Meeting.

         Under the California General Corporation Law, the approval and adoption
of the  Agreements  and  the  transactions  contemplated  thereby  requires  the
affirmative  vote of the  holders of a  majority  of the  outstanding  shares of
common stock of Pacific.  The proposed Merger is also subject to approval by the
shareholders  of SBB,  certain  regulatory  approvals  and  satisfaction  of the
conditions contained in the Reorganization Agreement.

         As a result of the Merger, each share of common stock, no par value, of
Pacific (the "Pacific  Common  Stock")  outstanding at the effective time of the
Merger (other than shares with respect to which dissenters' rights are perfected
in accordance  with the California  General  Corporation  Law) will be converted
into the right to  receive  1.935  shares of the  fully  paid and  nonassessable
common  stock,  no par value,  of SBB (the "SBB Common  Stock").  No  fractional
shares of SBB Common Stock will be issued in the Merger,  and, in lieu  thereof,
cash will be paid to Pacific  shareholders  in accordance  with the terms of the
Reorganization Agreement.

         The Board of Directors of Pacific has  carefully  considered  the terms
and conditions of the Agreements and the proposed  Merger with SBB. Van Kasper &
Company, Pacific's financial advisor, has delivered to the Board of Directors of
Pacific its opinion, dated as of ___________, 1998, that the terms of the Merger
are fair, from a financial point of view, to the shareholders of Pacific. A copy
of   this   opinion   is   attached   as   Appendix   E  to  the   Joint   Proxy
Statement/Prospectus.

         THE  BOARD  OF  DIRECTORS  OF  PACIFIC  HAS  UNANIMOUSLY  APPROVED  THE
AGREEMENTS AND THE TRANSACTIONS CONTEMPLATED THEREBY,  INCLUDING THE MERGER, AND
RECOMMENDS  THAT  THE  SHAREHOLDERS  VOTE  FOR  APPROVAL  AND  ADOPTION  OF  THE
AGREEMENTS AND THE TRANSACTIONS  CONTEMPLATED THEREBY,  INCLUDING THE MERGER, AT
THE PACIFIC MEETING.

         The  accompanying  Notice of Special Meeting of Shareholders  and Joint
Proxy Statement/Prospectus  describe the matters to be acted upon at the Pacific
Meeting.  Shareholders  are urged to review  carefully the attached  Joint Proxy
Statement/Prospectus,  which  describes  the  Merger and the  background  to the
transaction, including the Appendices thereto. The Board of Directors of Pacific
has fixed the close of  business  on  _________,  1998 as the  record  date (the
"Pacific Record Date") for the Pacific Meeting.  Accordingly,  only shareholders
of record on the Pacific  Record Date will be entitled to notice of, and to vote
at, the Pacific Meeting or any adjournments or postponements thereof.

         BECAUSE OF THE  SIGNIFICANCE OF THE  PROPOSED MERGER TO PACIFIC CAPITAL
BANCORP, YOUR PARTICIPATION  IN THE PACIFIC  MEETING, IN PERSON  OR BY PROXY, IS



<PAGE>



ESPECIALLY IMPORTANT. AN ABSTENTION OR FAILURE TO VOTE AT THE PACIFIC MEETING OR
FAILURE  TO SUBMIT A PROXY  WILL HAVE THE SAME  EFFECT AS A VOTE  "AGAINST"  THE
REORGANIZATION AGREEMENT.  ACCORDINGLY,  PLEASE SIGN, DATE AND MAIL THE ENCLOSED
PROXY  PROMPTLY IN THE  POSTAGE-PAID  ENVELOPE  THAT HAS BEEN  PROVIDED FOR YOUR
CONVENIENCE.  IF YOU ATTEND THE PACIFIC  MEETING,  YOU MAY VOTE IN PERSON IF YOU
WISH, EVEN IF YOU HAVE PREVIOUSLY RETURNED YOUR PROXY CARD.

         We look forward to seeing you at the Pacific Meeting.

                                                     Sincerely,



                                                     Clayton C. Larson
                                                     President




<PAGE>



                             Pacific Capital Bancorp
                              307 South Main Street
                            Salinas, California 93901

                    NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                        TO BE HELD ON DECEMBER ___, 1998

         NOTICE IS  HEREBY  GIVEN  that a Special  Meeting  of  Shareholders  of
Pacific  Capital  Bancorp  ("Pacific")  will be held at Corral de Tierra Country
Club, 81 Corral de Tierra Road,  Salinas,  California,  on __________,  December
___, 1998 at _____ p.m., local time, (the "Pacific Meeting"),  for the following
purpose,  which  is  more  fully  described  in  the  accompanying  Joint  Proxy
Statement/Prospectus:

          Approval of Merger.  To  consider  and vote upon a proposal to approve
          and adopt an Agreement and Plan of Reorganization (the "Reorganization
          Agreement"),  dated as of July 20,  1998,  by and between  Pacific and
          Santa Barbara  Bancorp  ("SBB"),  and a related  Agreement and Plan of
          Merger (the "Merger Agreement") between Pacific and SBB (collectively,
          the "Agreements") and the transactions  contemplated thereby, pursuant
          to which  Pacific  will be merged  with and into SBB,  with SBB as the
          surviving  corporation  (the  "Merger")  and with the  resulting  name
          "Pacific  Capital  Bancorp",   upon  the  terms  and  subject  to  the
          conditions set forth in the  Reorganization  Agreement,  as more fully
          described in the accompanying Joint Proxy Statement/Prospectus.

         A copy of the  Agreements  are attached as Appendix A and Appendix B to
the accompanying Joint Proxy Statement/Prospectus.

         No other business will be transacted at the Pacific  Meeting other than
matters incidental to the conduct of the Pacific Meeting.

         The  Pacific  Board of  Directors  has fixed the close of  business  on
_____________,  1998 (the  "Record  Date"),  as the record  date for the Pacific
Meeting.  Only holders of record of shares of Pacific common stock, no par value
per share (the "Pacific Common  Stock"),  at the close of business on the Record
Date are  entitled  to notice  of, and to vote at,  the  Pacific  Meeting or any
adjournment(s) thereof.  Approval of the Merger requires the affirmative vote of
the  holders of not less than a majority  of the  outstanding  shares of Pacific
Common Stock.

         In connection with the Merger,  shareholders of Pacific may be entitled
to exercise  dissenters'  rights and to receive  cash in an amount  equal to the
fair market value of their  shares of Pacific  Common Stock in lieu of receiving
the SBB  Common  Stock  in the  Merger  by  complying  with  certain  procedures
specified by California law. See "THE MERGER--Rights of Dissenting Shareholders"
in the accompanying Joint Proxy Statement/Prospectus.

         Your vote is  important  regardless  of the number of shares of Pacific
Common Stock you own.  Each  shareholder,  even though he or she may not plan to
attend the Pacific Meeting in person,  is requested to sign, date and return the
enclosed Proxy in the enclosed postage-paid  envelope. You may revoke your Proxy
at any time  prior to its  exercise.  Any  shareholder  present in person at the
Pacific Meeting or at any adjournment or postponements thereof may revoke his or
her Proxy and vote personally on each matter brought before the Pacific Meeting.

                                             By order of the Board of Directors,



                                            James L. Gattis
                                            Corporate Secretary
Salinas, California
November ___, 1998

                   PLEASE DATE AND SIGN THE ENCLOSED PROXY AND
            RETURN IT PROMPTLY IN THE ENCLOSED POSTAGE-PAID ENVELOPE.



<PAGE>



                              Santa Barbara Bancorp
                               1021 Anacapa Street
                         Santa Barbara, California 93101

                                                             November ____, 1998
TO THE SHAREHOLDERS OF
SANTA BARBARA BANCORP:

         You are cordially  invited to attend a Special  Meeting of Shareholders
of Santa Barbara Bancorp ("SBB") to be held at the Lobero Theater, 33 East Canon
Perdido,  Santa  Barbara,  California,  at 2:00 p.m.,  local  time,  on Tuesday,
December 15, 1998 (the "SBB Meeting").

         At the SBB  Meeting,  you will be asked to  consider  and vote upon the
following matters:

         1.  A  proposal  to  approve  and  adopt  an  Agreement   and  Plan  of
Reorganization (the "Reorganization  Agreement"),  dated as of July 20, 1998, by
and between SBB and Pacific Capital Bancorp  ("Pacific") and a related Agreement
and  Plan  of  Merger  (the   "Merger   Agreement")   between  SBB  and  Pacific
(collectively,  the "Agreements"),  and the transactions  contemplated  thereby,
pursuant  to which  Pacific  will be merged  with and into SBB,  with SBB as the
surviving  corporation to be operated with the resulting  name "Pacific  Capital
Bancorp" (the "Merger").  The Merger is more fully described in the accompanying
Joint Proxy  Statement/Prospectus.  Copies of the Agreements are attached to the
Join Proxy Statement/Prospectus as Appendix A and Appendix B.

         2.  A proposal to approve an amendment to the Bylaws of SBB to increase
the range of the size of the Board of Directors  from (i) a minimum of seven (7)
persons  and a maximum of  thirteen  (13)  persons to (ii) a minimum of nine (9)
persons  and a maximum  of  seventeen  (17)  persons,  with the exact  number of
directors  within the foregoing range to be determined by the Board of Directors
(the "Bylaw Amendment").

         3.  A proposal to approve an amendment to the Articles of Incorporation
of SBB to eliminate cumulative voting in the election of directors (the "Article
Amendment").

         No other  business  will be  transacted  at the SBB Meeting  other than
matters incidental to the conduct of the SBB Meeting.

         Under the California General Corporation Law, the approval and adoption
of the  Agreements  and the  transactions  contemplated  thereby,  including the
Merger  (Proposal 1), requires the affirmative vote of the holders of a majority
of the  outstanding  shares of common stock of SBB. The proposed  Merger is also
subject to approval by the shareholders of Pacific, certain regulatory approvals
and satisfaction of the conditions  contained in the  Reorganization  Agreement.
Approval  of the  Bylaw  Amendment  (Proposal  2) and  approval  of the  Article
Amendment  (Proposal  3)  requires  the  affirmative  vote of the  holders  of a
majority  of  the  outstanding   shares  of  SBB  Common  Stock.  More  detailed
information  about the Bylaw Amendment and the Article  Amendment is included in
the attached Joint Proxy Statement/Prospectus.

         As a result of the Merger, each share of common stock, no par value, of
Pacific (the "Pacific  Common  Stock")  outstanding at the effective time of the
Merger (other than shares with respect to which dissenters' rights are perfected
in accordance  with the California  General  Corporation  Law) will be converted
into the right to  receive  1.935  shares of the  fully  paid and  nonassessable
common  stock,  no par value,  of SBB (the "SBB Common  Stock").  No  fractional
shares of SBB Common Stock will be issued in the Merger,  and, in lieu  thereof,
cash will be paid to Pacific  shareholders  in accordance  with the terms of the
Reorganization  Agreement.  Based on the  number of shares of SBB  Common  Stock
outstanding as of the record date for the SBB Meeting,  the shares of SBB Common
Stock to be issued to the  shareholders  of Pacific in the Merger will represent
approximately ____% of the shares of SBB Common Stock outstanding  following the
Merger.

         The Board of Directors of SBB has  carefully  considered  the terms and
conditions of the  Agreements  and the proposed  Merger with  Pacific.  The Bank
Advisory  Group,  Inc., as financial  advisor to SBB, has delivered its opinion,
dated as of __________, 1998, to the Board of Directors of SBB that the terms of
the Merger are fair, from a financial point of view, to the shareholders of SBB.
A  copy  of  this  opinion  is  attached  as  Appendix  F  to  the  Joint  Proxy
Statement/Prospectus.




<PAGE>



         THE BOARD OF DIRECTORS OF SBB HAS  UNANIMOUSLY  APPROVED THE AGREEMENTS
AND THE TRANSACTIONS CONTEMPLATED THEREBY,  INCLUDING THE MERGER, AND RECOMMENDS
THAT THE  SHAREHOLDERS  VOTE FOR APPROVAL AND ADOPTION OF THE AGREEMENTS AND THE
TRANSACTIONS CONTEMPLATED THEREBY,  INCLUDING THE MERGER, AT THE SBB MEETING. IN
ADDITION,  THE BOARD OF DIRECTORS OF SBB  APPROVED THE BYLAW  AMENDMENT  AND THE
ARTICLE  AMENDMENT AND RECOMMENDS  THAT THE  SHAREHOLDERS  VOTE FOR APPROVAL AND
ADOPTION OF EACH OF THE BYLAW AMENDMENT AND THE ARTICLE AMENDMENT.

         The  accompanying  Notice of Special Meeting of Shareholders  and Joint
Proxy Statement/Prospectus  describe each of the matters to be acted upon at the
SBB Meeting. Shareholders are urged to review carefully the attached Joint Proxy
Statement/Prospectus,  which  describes  the  Merger and the  background  to the
transaction, including the Appendices thereto. The Board of Directors of SBB has
fixed the close of  business  on  _________,  1998 as the record  date (the "SBB
Record Date") for the SBB Meeting.  Accordingly,  only shareholders of record on
the SBB  Record  Date will be  entitled  to notice  of,  and to vote at, the SBB
Meeting or any adjournments or postponements thereof.

         BECAUSE OF THE  SIGNIFICANCE  OF THE PROPOSED  MERGER TO SANTA  BARBARA
BANCORP,  YOUR  PARTICIPATION  IN THE SBB  MEETING,  IN PERSON  OR BY PROXY,  IS
ESPECIALLY  IMPORTANT.  AN  ABSTENTION  OR FAILURE TO VOTE AT THE SBB MEETING OR
FAILURE  TO SUBMIT A PROXY  WILL HAVE THE SAME  EFFECT AS A VOTE  "AGAINST"  THE
REORGANIZATION AGREEMENT.  ACCORDINGLY,  PLEASE SIGN, DATE AND MAIL THE ENCLOSED
PROXY  PROMPTLY IN THE  POSTAGE-PAID  ENVELOPE  THAT HAS BEEN  PROVIDED FOR YOUR
CONVENIENCE.  IF YOU ATTEND THE SBB MEETING, YOU MAY VOTE IN PERSON IF YOU WISH,
EVEN IF YOU HAVE PREVIOUSLY RETURNED YOUR PROXY CARD.

         We look forward to seeing you at the SBB Meeting.

         Sincerely,



Donald M. Anderson           David W. Spainhour          William S. Thomas, Jr.
Chairman of the Board        President and Chief         Vice Chairman and
                             Executive Officer           Chief Operating Officer

Santa Barbara, California
November ___, 1998




<PAGE>




                              Santa Barbara Bancorp
                               1021 Anacapa Street
                         Santa Barbara, California 93101

                    NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                         TO BE HELD ON DECEMBER 15, 1998

         NOTICE IS HEREBY GIVEN that a Special  Meeting of Shareholders of Santa
Barbara  Bancorp  ("SBB")  will be held at the  Lobero  Theater,  33 East  Canon
Perdido, Santa Barbara,  California, on Tuesday, December 15, 1998 at 2:00 p.m.,
local time, (the "SBB Meeting"),  for the following  purposes,  each of which is
more fully described in the accompanying Joint Proxy Statement/Prospectus:

     1. Approval of Merger.  To consider and vote upon a proposal to approve and
     adopt  an  Agreement  and  Plan  of  Reorganization  (the   "Reorganization
     Agreement"),  dated as of July 20,  1998,  by and  between  SBB and Pacific
     Capital  Bancorp  ("Pacific"),  and a related  Agreement and Plan of Merger
     (the  "Merger  Agreement")  between  SBB  and  Pacific  (collectively,  the
     "Agreements") and the transactions  contemplated thereby, pursuant to which
     Pacific  will be  merged  with and  into  SBB,  with  SBB as the  surviving
     corporation  (the  "Merger") and with the resulting  name "Pacific  Capital
     Bancorp",  upon the terms and  subject to the  conditions  set forth in the
     Reorganization Agreement, as more fully described in the accompanying Joint
     Proxy  Statement/Prospectus.  A copy  of the  Agreements  are  attached  as
     Appendix  A and  Appendix  B to the  accompanying  Joint  Proxy  Statement/
     Prospectus.

     2. Amendment to Bylaws.  To consider and vote upon a proposal to approve an
     amendment  to the  Bylaws of SBB to  increase  the range of the size of the
     Board of Directors from (i) a minimum of seven (7) persons and a maximum of
     thirteen  (13)  persons to (ii) a minimum of nine (9) persons and a maximum
     of seventeen  (17) persons,  with the exact number of directors  within the
     foregoing range to be determined by the Board of Directors.

     3.  Amendment  to Articles of  Incorporation.  To consider  and vote upon a
     proposal to approve an amendment to the Articles of Incorporation of SBB to
     eliminate cumulative voting with respect to the election of directors.

         No other  business  will be  transacted  at the SBB Meeting  other than
matters incidental to the conduct of the SBB Meeting.

         The SBB  Board  of  Directors  has  fixed  the  close  of  business  on
_____________, 1998 (the "Record Date"), as the record date for the SBB Meeting.
Only  holders  of record of shares of SBB common  stock,  no par value per share
(the "SBB  Common  Stock"),  at the close of  business  on the  Record  Date are
entitled  to notice of, and to vote at,  the SBB  Meeting or any  adjournment(s)
thereof. Approval of the each of the matters to be voted upon at the SBB Meeting
requires the affirmative  vote of the holders of not less than a majority of the
outstanding shares of SBB Common Stock.

         In connection  with the Merger,  shareholders of SBB may be entitled to
exercise  dissenters'  rights and to receive cash in an amount equal to the fair
market  value of their  shares of SBB Common  Stock by  complying  with  certain
procedures  specified by California law. See "THE MERGER -- Rights of Dissenting
Shareholders" in the accompanying Joint Proxy Statement/Prospectus.

         Your vote is important regardless of the number of shares of SBB Common
Stock you own.  Each  shareholder,  even though he or she may not plan to attend
the SBB Meeting in person,  is requested  to sign,  date and return the enclosed
Proxy in the enclosed  postage-paid  envelope.  You may revoke your Proxy at any
time prior to its exercise. Any shareholder present in person at the SBB Meeting
or at any adjournment or  postponements  thereof may revoke his or her Proxy and
vote personally on each matter brought before the SBB Meeting.

                                             By order of the Board of Directors,



                                             Jay D. Smith
                                             Corporate Secretary
Santa Barbara, California
November ___, 1998

                   PLEASE DATE AND SIGN THE ENCLOSED PROXY AND
            RETURN IT PROMPTLY IN THE ENCLOSED POSTAGE-PAID ENVELOPE.



<PAGE>




                                   PROSPECTUS
                                       OF
                              Santa Barbara Bancorp
                                 --------------
[Santa Barbara                                                  [Pacific Capital
Bancorp Logo]                 JOINT PROXY STATEMENT                Bancorp Logo]
                                       FOR
                              Santa Barbara Bancorp
         Special Meeting of Shareholders to be held on December 15, 1998
                                       AND
                             Pacific Capital Bancorp
         Special Meeting of Shareholders to be held on December __, 1998

         This   Joint   Proxy    Statement/Prospectus    (the    "Joint    Proxy
Statement/Prospectus")  of  Santa  Barbara  Bancorp,  a  California  corporation
("SBB"), and Pacific Capital Bancorp, a California corporation  ("Pacific"),  is
being  furnished  to  holders of the  shares of common  stock,  no par value per
share, of SBB (the "SBB Common  Stock"),  and to holders of the shares of common
stock,  no par value per share,  of Pacific (the  "Pacific  Common  Stock"),  in
connection  with the  solicitation  of Proxies by the Board of  Directors of SBB
(the "SBB Board") for use at the Special  Meeting of  Shareholders  of SBB to be
held at the Lobero Theater, 33 East Canon Perdido, Santa Barbara, California, on
Tuesday,  December 15, 1998 at 2:00 p.m., local time, and at any adjournments or
postponements  thereof (the "SBB Meeting"),  and the  solicitation of Proxies by
the Board of Directors of Pacific (the  "Pacific  Board") for use at the Special
Meeting of  Shareholders of Pacific to be held at Corral de Tierra Country Club,
81 Corral de Tierra Road, Salinas, California, on __________, December ___, 1998
at ______ p.m.,  local time, and at any  adjournments or  postponements  thereof
(the "Pacific Meeting").

         At the meetings  referred to above, the shareholders of SBB and Pacific
will  consider  and vote upon a proposal to approve and adopt an  Agreement  and
Plan  of  Reorganization,  dated  as  of  July  20,  1998  (the  "Reorganization
Agreement"),  by and between SBB and Pacific and a related Agreement and Plan of
Merger by and between SBB and Pacific  (the "Merger  Agreement")  (collectively,
the Reorganization  Agreement and the Merger Agreement are referred to herein as
the  "Agreements"),  and the  transactions  contemplated  thereby  as more fully
described  herein.  Copies of the  Agreements  are  attached to this Joint Proxy
Statement/Prospectus  as Appendix A and Appendix B. The  Agreements  provide for
the merger of Pacific with and into SBB (the  "Merger"),  with SBB continuing as
the  surviving  corporation  in the Merger (the  "Surviving  Corporation").  The
Agreements  also  provide  that the  Articles of  Incorporation  of SBB shall be
amended  to change its name such that the  Surviving  Corporation  will  operate
under  the  name  "Pacific  Capital  Bancorp".  Pursuant  to  the  terms  of the
Agreements,  upon consummation of the Merger, each share of Pacific Common Stock
outstanding at the Effective Time (as defined  herein) of the Merger (other than
shares with respect to which  dissenters'  rights have been  perfected)  will be
converted  into 1.935  shares (the  "Exchange  Ratio") of SBB Common  Stock.  No
fractional  shares of SBB shall be issued in the Merger,  and, in lieu  thereof,
cash will be paid to shareholders of Pacific in accordance with the terms of the
Agreements. The shares of common stock of the Surviving Corporation to be issued
to Pacific  shareholders  in  connection  with the Merger  will  continue  to be
referred to herein as "SBB Common Stock",  and the aggregate  amount of all such
consideration to be received by shareholders of Pacific upon consummation of the
Merger is referred to herein as the "Merger Consideration."

         This Joint Proxy  Statement/Prospectus  and the accompanying  letter to
shareholders,  Notice of Special  Meeting  and Proxy are first  being  mailed to
shareholders of SBB and Pacific on or about November ___, 1998.

         See "RISK FACTORS" on page 17 for a discussion of certain  factors that
should be considered by holders of SBB Common Stock and Pacific Common Stock.

THE SECURITIES TO BE ISSUED IN THE MERGER PURSUANT TO THIS JOINT PROXY STATEMENT
/PROSPECTUS HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE
    COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES AND
       EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON
          THE ACCURACY OR ADEQUACY OF THIS JOINT STATEMENT/PROSPECTUS.
            ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

    THE SECURITIES OFFERED HEREBY ARE NOT SAVINGS ACCOUNTS, DEPOSITS OR OTHER
       OBLIGATIONS OF ANY BANK OR NON-BANK SUBSIDIARY AND ARE NOT INSURED
                BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE
                BANK INSURANCE FUND OR ANY OTHER FEDERAL OR STATE
                              GOVERNMENTAL AGENCY.
                                -----------------
    The date of this Joint Proxy Statement/Prospectus is November ___, 1998.

                                                        (continued on next page)


                                        1

<PAGE>



         SBB  Common  Stock and  Pacific  Common  Stock are quoted on the Nasdaq
National Market  ("Nasdaq") under the respective  symbols "SABB" and "PABN." The
closing sales price of SBB Common Stock and Pacific  Common Stock as reported on
Nasdaq was $32.25 and $49.00,  respectively,  on July 17, 1998 (the last trading
day prior to  public  announcement  of the  Merger),  and  $______  and  $_____,
respectively, on November __, 1998 (the last practicable trading date before the
printing of this Joint Proxy Statement/Prospectus).

         At the SBB Special Meeting,  the shareholders of SBB will also be asked
to consider and vote on the following two additional proposals:  (a) To consider
and vote  upon a  proposal  to  approve  an  amendment  to the  Bylaws of SBB to
increase  the range of the size of the SBB Board from (i) a minimum of seven (7)
persons  and a maximum of  thirteen  (13)  persons to (ii) a minimum of nine (9)
persons  and a maximum  of  seventeen  (17)  persons,  with the exact  number of
directors  within the foregoing range to be determined by the SBB Board; and (b)
To consider  and vote upon a proposal to approve an amendment to the Articles of
Incorporation of SBB to eliminate cumulative voting with respect to the election
of directors.

THE  ABOVE  MATTERS  ARE  DISCUSSED  IN  DETAIL  IN  THIS JOINT PROXY STATEMENT/
PROSPECTUS.  THE PROPOSED  MERGER  IS A  COMPLEX  TRANSACTION.  SHAREHOLDERS ARE
STRONGLY URGED  TO READ  AND CONSIDER  CAREFULLY  THIS  JOINT  PROXY  STATEMENT/
PROSPECTUS IN ITS ENTIRETY.

         This Joint Proxy  Statement/  Prospectus  does not cover any resales of
Common Stock of the  Surviving  Corporation  to be received by  shareholders  of
Pacific upon consummation of the Merger, and no person is authorized to make use
of this Joint Proxy Statement/Prospectus in connection with any such resale.

         No  person  is  authorized  to give  any  information  or to  make  any
representations    other   than   those    contained   in   this   Joint   Proxy
Statement/Prospectus  or incorporated by reference herein and, if given or made,
such other information or representations must not be relied upon as having been
authorized  by SBB or Pacific.  This Joint Proxy  Statement/Prospectus  does not
constitute an offer to sell, or a solicitation  of an offer to buy, any security
other than the securities covered by this Joint Proxy  Statement/Prospectus,  or
the solicitation of a proxy to or from any person in any  jurisdiction  where it
is  unlawful  to  make  such  offer  or   solicitation  of  an  offer  or  proxy
solicitation.  Neither the delivery of this Joint Proxy Statement/Prospectus nor
any  distribution of securities made hereunder shall,  under any  circumstances,
create any implication  that there has been no change in the  information  about
SBB or Pacific contained in this Joint Proxy Statement/Prospectus since the date
hereof.


                                        2

<PAGE>


<TABLE>
<CAPTION>
<S>                                                                                                            <C> 

                                                 TABLE OF CONTENTS
                                                                                                               Page
                                                                                                               ----


AVAILABLE INFORMATION............................................................................................iv

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING INFORMATION......................................................iv

INFORMATION INCORPORATED BY REFERENCE.............................................................................v

SUMMARY  .........................................................................................................1
         The Companies............................................................................................1
         The Special Meetings.....................................................................................2
         Risk Factors.............................................................................................4
         Merger   ................................................................................................4
         The Reorganization Agreement.............................................................................7
         Mutual Stock Option Agreements...........................................................................9
         Management and Operations after Merger..................................................................10
         Comparison of Shareholder Rights........................................................................10
         Comparative Stock Prices................................................................................11
         SELECTED COMPARATIVE PER SHARE DATA.....................................................................13
         SELECTED CONSOLIDATED FINANCIAL DATA....................................................................14

RISK FACTORS.....................................................................................................17
         Prospects of the Surviving Corporation After the Merger.................................................17
         Market Trading and Liquidity; Possible Volatility of Prices.............................................17
         Credit Risk.............................................................................................18
         Interest Rate Risk......................................................................................18
         Impact of Year 2000.....................................................................................18
         Competition.............................................................................................18
         Government Regulation and Monetary Policy...............................................................19
         Common Stock Dividends..................................................................................19
         Economic Conditions and Geographic Concentration........................................................19

THE SBB MEETING..................................................................................................19
         Date, Time and Place....................................................................................19
         Matters to be Considered................................................................................19
         Record Date.............................................................................................22
         Quorum, Voting and Revocation of Proxies................................................................22
         Vote Required to Approve the Merger.....................................................................23
         Vote Required to Approve the Bylaw Amendment............................................................23
         Vote Required to Approve the Article Amendment..........................................................23

THE PACIFIC MEETING..............................................................................................24
         Date, Time and Place....................................................................................24
         Matters to be Considered................................................................................24
         Record Date.............................................................................................24
         Quorum, Voting and Revocation of Proxies................................................................24
         Vote Required...........................................................................................25

INFORMATION ABOUT THE PARTIES....................................................................................25
         SBB      ...............................................................................................25
         Security Ownership of Principal Shareholders and Management of SBB......................................26
         Pacific  ...............................................................................................28
         Security Ownership of Management of Pacific.............................................................28




                                                         i

<PAGE>



THE MERGER.......................................................................................................30
         General  ...............................................................................................30
         Structure of the Merger.................................................................................31
         Merger Consideration....................................................................................31
         Background of the Merger................................................................................31
         Reasons for the Merger; Recommendation of the SBB Board.................................................33
         Reasons for the Merger; Recommendation of the Pacific Board.............................................33
         Opinion of Financial Advisors...........................................................................34
         Exchange of Stock Certificates; Fractional Shares.......................................................44
         Share Adjustments.......................................................................................45
         Effective Date..........................................................................................45
         Regulatory Approvals....................................................................................45
         Representations and Warranties..........................................................................47
         Conduct of Business Pending the Merger and Certain Other Agreements.....................................47
         Certain Conditions to Consummation of the Merger........................................................49
         Termination of the Reorganization Agreement.............................................................51
         Effect of Merger on Employee Benefit and Stock Option Plans.............................................53
         Interests of Certain Persons in the Merger..............................................................53
         Management and Operations After the Merger..............................................................56
         Accounting Treatment....................................................................................59
         Rights of Dissenting Shareholders.......................................................................61
         Waiver and Amendment....................................................................................64
         Expenses and Fees.......................................................................................64
         Dividends...............................................................................................64
         Nasdaq Listing..........................................................................................64
         Resale of SBB Common Stock..............................................................................64
         Mutual Stock Option Agreements..........................................................................65

PRO FORMA FINANCIAL DATA.........................................................................................67

DESCRIPTION OF SBB CAPITAL STOCK.................................................................................71
         General  ...............................................................................................71
         Voting Rights...........................................................................................71
         Nomination of Directors.................................................................................71
         Dividend Rights.........................................................................................71
         Preemptive Rights.......................................................................................72
         Liquidation Rights......................................................................................72
         Assessment and Redemption...............................................................................72
         Restriction on Ownership................................................................................72

COMPARISON OF SHAREHOLDER RIGHTS.................................................................................72
         General  ...............................................................................................72
         Authorized Capital Stock................................................................................72
         Shareholder Matters.....................................................................................73
         Directors...............................................................................................74
         Amendment of Articles of Incorporation and Bylaws.......................................................74
         Fair Price Provision....................................................................................75
         Anti-Takeover Provisions................................................................................75

LEGAL OPINION....................................................................................................76

EXPERTS  ........................................................................................................76
         Independent Public Accountants for SBB..................................................................76
         Independent Auditors for Pacific........................................................................76

SOLICITATION OF PROXIES..........................................................................................76



                                                        ii

<PAGE>



SHAREHOLDER PROPOSALS............................................................................................76

OTHER BUSINESS...................................................................................................77

</TABLE>


                                                    APPENDICES


APPENDIX A AGREEMENT AND PLAN OF REORGANIZATION
APPENDIX B AGREEMENT AND PLAN OF MERGER
APPENDIX C SANTA BARBARA BANCORP STOCK OPTION AGREEMENT
APPENDIX D PACIFIC CAPITAL BANCORP STOCK OPTION AGREEMENT
APPENDIX E FAIRNESS OPINION OF VAN KASPER & COMPANY
APPENDIX F FAIRNESS OPINION OF THE BANK ADVISORY GROUP, INC.
APPENDIX G DISSENTERS' RIGHTS UNDER THE CALIFORNIA GENERAL CORPORATION LAW


                                                        iii

<PAGE>



                              AVAILABLE INFORMATION


         SBB and Pacific are each subject to the  informational  requirements of
the  Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),  and in
accordance  therewith file reports,  proxy statements and other information with
the Securities and Exchange Commission (the "Commission").  Such reports,  proxy
statements and other  information as filed with the Commission are available for
inspection  and copying at the public  reference  facilities  maintained  by the
Commission at Room 1024,  Judiciary Plaza, 450 Fifth Street,  N.W.,  Washington,
D.C. 20549,  and at the  Commission's  Regional Offices located at the Northwest
Atrium Center, 500 West Madison Street, Suite 1400, Chicago,  Illinois 60661 and
at Seven World Trade Center, New York, New York 10048.  Copies of such documents
may also be obtained  from the Public  Reference  Section of the  Commission  at
Judiciary Plaza, 450 Fifth Street, N.W.,  Washington,  D.C. 20549, at prescribed
rates.  The  Commission  also  maintains  a  site  on  the  World  Wide  Web  at
http://www.sec.gov  that contains reports,  proxy and information statements and
other  information  filed  electronically  with the  Commission,  including such
information filed by SBB and Pacific.  SBB Common Stock and Pacific Common Stock
are quoted on Nasdaq under the respective  symbols  "SABB" and "PABN."  Reports,
proxy  statements and other  information  concerning SBB and Pacific may also be
inspected  at the offices of the National  Association  of  Securities  Dealers,
Inc., 1735 K Street, N.W., Washington, D.C. 20006.

         SBB has filed a Registration  Statement  (together with all amendments,
schedules and exhibits thereto,  the "Registration  Statement") on Form S-4 (No.
333-_____) under the Securities Act of 1933, as amended (the "Securities  Act"),
with the  Commission  covering  the shares of SBB  Common  Stock to be issued in
connection  with the Merger.  As permitted by the rules and  regulations  of the
Commission,  this Joint Proxy  Statement/Prospectus  omits certain  information,
exhibits  and  undertakings  contained  in  the  Registration   Statement.   The
Registration  Statement is  available  for  inspection  and copying as set forth
above. Statements contained in this Joint Proxy Statement/Prospectus,  or in any
document incorporated in this Joint Proxy  Statement/Prospectus by reference, as
to the contents of any contract or other document  referred to herein or therein
are not necessarily complete, and in each instance reference is made to the copy
of such  contract  or other  document  filed as an exhibit  to the  Registration
Statement,  each  such  statement  being  qualified  in  all  respects  by  such
reference.

         This  Joint  Proxy  Statement/Prospectus  constitutes  both  the  proxy
statement of SBB and Pacific  relating to the  solicitation of proxies for their
use at their respective special meetings and the Prospectus filed as part of the
Registration Statement.  This Joint Proxy  Statement/Prospectus  and the related
proxies and other materials are first being provided to the  shareholders of SBB
and Pacific on or about November ___, 1998.

         All information contained in this Joint Proxy Statement/Prospectus with
respect to SBB has been  supplied by SBB,  and all  information  with respect to
Pacific  has been  supplied by Pacific.  Neither  SBB nor Pacific  warrants  the
accuracy or completeness of information  relating to the other party.  SBB makes
no  representation  as to the accuracy or completeness of any Pacific  documents
filed by Pacific with the Commission pursuant to the Exchange Act.


           CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING INFORMATION

         CERTAIN INFORMATION CONTAINED IN THIS JOINT PROXY STATEMENT/PROSPECTUS,
INCLUDING  INFORMATION  INCORPORATED BY REFERENCE HEREIN,  CONSTITUTES "FORWARD-
LOOKING  STATEMENTS" WITHIN THE MEANING OF SECTION 27A OF THE SECURITIES ACT AND
SECTION 21E OF THE EXCHANGE ACT,  WHICH CAN BE IDENTIFIED BY THE USE OF FORWARD-
LOOKING TERMINOLOGY SUCH AS "MAY," "WILL," "EXPECT,"  "ANTICIPATE,"  "ESTIMATE,"
OR "CONTINUE" OR THE NEGATIVE THEREOF OR OTHER VARIATIONS  THEREON OR COMPARABLE
TERMINOLOGY.  CERTAIN  STATEMENTS  CONTAINED  IN  THIS  JOINT  PROXY  STATEMENT/
PROSPECTUS  CONSTITUTE  CAUTIONARY  STATEMENTS  IDENTIFYING  IMPORTANT  FACTORS,
INCLUDING CERTAIN RISKS AND UNCERTAINTIES,  WITH RESPECT TO SUCH FORWARD-LOOKING
STATEMENTS  THAT COULD  CAUSE  ACTUAL  RESULTS TO DIFFER  MATERIALLY  FROM THOSE
REFLECTED IN SUCH FORWARD-LOOKING STATEMENTS.


                                       iv

<PAGE>
                      INFORMATION INCORPORATED BY REFERENCE

         This  Joint  Proxy   Statement/Prospectus   incorporates  documents  by
reference which are not presented  herein or delivered  herewith.  Copies of any
such documents, other than exhibits thereto, are available without charge to any
person,   including   any   beneficial   owner,   to  whom  this   Joint   Proxy
Statement/Prospectus is delivered upon written or oral request to the following:

SBB Documents                                Pacific Documents
- -------------                                -----------------
Santa Barbara Bancorp                        Pacific Capital Bancorp
1021 Anacapa Street                          307 South Main Street
Santa Barbara, California 93101-2036         Salinas, California  93901
Attention:   Don Lafler                      Attention:   Dennis DeCius
Phone:  (805) 564-6312                       Phone:  (831) 757-4900
Fax:  (805) 564-6293                         Fax:  (831) 757-5061

         In order to ensure timely delivery of such documents, a request must be
received no later than December __, 1998.

         The following SBB documents are  incorporated by reference herein (File
         No. 0-11113):

          1.   SBB's Annual Report on Form 10-K for the year ended  December 31,
               1997.

          2.   SBB's Quarterly Reports on Form 10-Q for the quarters ended March
               31, 1998 and June 30, 1998.

          3.   SBB's Current Report on Form 8-K dated March 5, 1998.

          4.   The  description  of the SBB  Common  Stock  set  forth  in SBB's
               Registration  Statement on Form 8-A  (Registration  No.  0-11113)
               filed  under  the  Exchange  Act,  and any  amendment  or  report
               subsequently  filed  with  the  Commission  for  the  purpose  of
               updating such description.

         Such  incorporation  by  reference  will not be deemed to  specifically
incorporate  by  reference  the  information  referred to in Item  402(a)(8)  of
Regulation S-K.

         The following Pacific  documents are incorporated  by  reference herein
         (File No. 0-13528):

          1.   Pacific's  Annual Report on Form 10-K for the year ended December
               31, 1997.

          2.   Pacific's  Quarterly  Reports on Form 10-Q for the quarters ended
               March 31, and June 30, 1998.

          3.   The  description  of  the  Pacific  Common  Stock  set  forth  in
               Pacific's  Registration  Statement on Form S-18 (Registration No.
               2-87513)  filed under the  Securities  Act, and any  amendment or
               report  subsequently filed with the Commission for the purpose of
               updating such description.

         Such  incorporation  by  reference  will not be deemed to  specifically
incorporate  by  reference  the  information  referred to in Item  402(a)(8)  of
Regulation S-K.

         Pacific's  Annual  Report on Form 10-K for the year ended  December 31,
1997,  incorporated by reference specific portions of Pacific's Annual Report to
Shareholders  for that year (the "Pacific Annual Report to  Shareholders"),  but
does  not   incorporate   other   portions  of  the  Pacific  Annual  Report  to
Shareholders.  Only the portions of the Pacific  Annual  Report to  Shareholders
captioned "Selected Financial Information", "Consolidated Financial Statements",
"Notes to Consolidated  Financial  Statements",  "Independent Auditors' Report",
"Management's  Discussion  and  Analysis",  and "Pacific  Capital  Bancorp Stock
Activity" are incorporated  herein.  Other portions of the Pacific Annual Report
to  Shareholders  are  not  incorporated   herein  and  are  not  part  of  this
Registration Statement.

         All documents filed with the Commission by SBB and Pacific  pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of
effectiveness  of  the   Registration   Statement  of  which  this  Joint  Proxy
Statement/Prospectus  forms a part and prior to the date of the SBB  Meeting and
the Pacific Meeting are incorporated herein by reference and such documents will
be deemed to be a part  hereof  from the date of filing of such  documents.  Any
statement  contained in this Joint Proxy  Statement/Prospectus  or in a document
incorporated or deemed to be incorporated by reference  herein will be deemed to
be modified or superseded for purposes of this Joint Proxy  Statement/Prospectus
to the extent that a  statement  contained  herein or in any other  subsequently
filed document that also is or is deemed to be incorporated by reference  herein
modifies or supersedes such  statement.  Any statement so modified or superseded
will not be deemed, except as so modified or superseded, to constitute a part of
this Joint Proxy Statement/Prospectus.
                                        v
<PAGE>



                                     SUMMARY

         The  following is a summary of certain  significant  matters  discussed
elsewhere or incorporated by reference in this Joint Proxy Statement/Prospectus.
This summary is qualified in its entirety by, and should be read in  conjunction
with,  the more detailed  information  appearing  elsewhere or  incorporated  by
reference in this Joint Proxy  Statement/Prospectus,  and the Appendices  hereto
and in documents incorporated herein by reference.

The Companies

         SBB

         SBB  is  a  California  corporation  headquartered  in  Santa  Barbara,
California, and a bank holding company registered under the Bank Holding Company
Act of 1956,  as amended (the "BHC Act").  SBB was  incorporated  on December 7,
1981.  Santa  Barbara  Bank  &  Trust  ("SBB&T"),  SBB's  wholly  owned  banking
subsidiary,  is a California banking  corporation and member bank of the Federal
Reserve System.  SBB&T is a full service  commercial bank serving the California
communities of Buellton, Camarillo,  Carpinteria,  Fillmore, Goleta, Lompoc, Los
Olivos,  Montecito,  Oxnard, Santa Barbara,  Santa Maria, Santa Paula,  Solvang,
Vandenberg  Village,  Ventura and  surrounding  communities in Santa Barbara and
Ventura  counties from 27 locations.  SBB also owns  Sanbarco  Mortgage  Company
which engages in the business of mortgage  brokering  services and the servicing
of brokered  loans.  Other than the  ownership  of SBB&T and  Sanbarco  Mortgage
Company, SBB is not engaged in any significant business activities.

         At June 30, 1998, SBB had consolidated  assets of  approximately  $1.62
billion,  deposits of approximately  $1.43 billion and  shareholders'  equity of
approximately  $127.84  million.  SBB Common Stock is quoted on Nasdaq under the
symbol  "SABB." SBB's  principal  executive  offices are located at 1021 Anacapa
Street in Santa Barbara, California 93101-2036, and its telephone number at this
location is (805) 564-6298.

         See "PARTIES -- SBB."

         Pacific

         Pacific  is  a  California   corporation   headquartered   in  Salinas,
California, and a bank holding company registered under the BHC Act. Pacific was
incorporated  on January 26, 1983.  Pacific owns all of the capital stock of two
banking subsidiaries: First National Bank of Central California ("First National
Bank") and South Valley National Bank ("South Valley").  First National Bank and
South  Valley  are  full  service   commercial   banks  serving  the  California
communities of Carmel, Gilroy,  Hollister,  Monterey,  Morgan Hill, Salinas, San
Juan Bautista,  Soledad,  Watsonville,  and surrounding communities in Monterey,
San Benito, Santa Clara and Santa Cruz Counties from ten (10) locations. Pacific
does not engage in any significant  business activities other than the ownership
of First National Bank of Central  California and South Valley National Bank and
the ownership of one other wholly owned  subsidiary,  Pacific  Capital  Services
Corporation.  Pacific Capital Services  Corporation has no active  operations at
this time.

         On August 4,  1998,  First  National  Bank and  South  Valley  filed an
application  with the Office of the  Comptroller  of the Currency (the "OCC") to
merge South Valley with and into First  National Bank under the charter of First
National  Bank (the  "Affiliate  Merger").  Upon  consummation  of the Affiliate
Merger, which is expected to be completed during the fourth quarter of 1998, all
of the offices of South  Valley  will be operated as branches of First  National
Bank under the name of South Valley  National Bank. No assurance can be given as
to whether or when the  Affiliate  Merger will be  completed.  Completion of the
Affiliate  Merger is not a condition to completion of the transaction  described
in this Joint Proxy Statement/Prospectus.

         At June 30,  1998,  Pacific had  consolidated  assets of  approximately
$815.56  million,  deposits of approximately  $730.33 million and  shareholders'
equity of  approximately  $76.06 million.  The Pacific Common Stock is quoted on
Nasdaq  under the symbol  "PABN."  Pacific's  principal  executive  offices  are
located at 307 South Main Street in Salinas, California 93901, and its telephone
number at this location is (408) 757-4900.

         See "PARTIES -- Pacific."



                                        1

<PAGE>



The Special Meetings

         Date, Time and Place of Special Meetings

         SBB. The SBB Meeting is scheduled to be held at the Lobero Theater,  33
East Canon Perdido,  Santa  Barbara,  California,  at 2:00 p.m.,  local time, on
Tuesday, December 15, 1998.

         SEE "THE SBB MEETING -- Date, Time and Place."

         Pacific.  The Pacific  Meeting is scheduled to be held at the Corral de
Tierra Country Club, 81 Corral de Tierra Road,  Salinas,  California,  at ______
p.m., local time, on __________, December ___, 1998.

         See "THE PACIFIC MEETING -- Date, Time and Place."

         Matters to be Considered

         SBB. The purpose of the SBB Meeting is to: (a) consider and vote upon a
proposal to approve and adopt the  Agreements  and the Merger;  (b) consider and
vote upon a proposal  to approve an  amendment  to the Bylaws of SBB to increase
the range of the size of the Board of Directors  from (i) a minimum of seven (7)
persons  and a maximum of  thirteen  (13)  persons to (ii) a minimum of nine (9)
persons  and a maximum  of  seventeen  (17)  persons,  with the exact  number of
directors  within the  foregoing  range to be  determined  by the SBB Board (the
"Bylaw  Amendment");  and (c)  consider  and vote upon a proposal  to approve an
amendment to the Articles of Incorporation of SBB to eliminate cumulative voting
with respect to the election of directors (the "Article Amendment").

         See "THE SBB MEETING -- Matters to be Considered."

         Pacific.  The purpose of the Pacific  Meeting is consider and vote upon
a proposal to approve and adopt the Agreements and the Merger.

         See "THE PACIFIC MEETING -- Matters to be Considered."

         Record Date; Stock Entitled to Vote

         SBB.  Only  holders  of  record  of SBB  Common  Stock at the  close of
business  on  ___________,  1998 (the "SBB  Record  Date")  will be  entitled to
receive  notice of, and to vote at, the SBB  Meeting  and any  postponements  or
adjournments thereof.

         See "THE SBB MEETING -- Record Date."

         Pacific. Only holders of record of Pacific Common Stock at the close of
business on  ____________,  1998 (the "Pacific Record Date") will be entitled to
receive notice of, and to vote at, the Pacific Meeting and any  postponements or
adjournments thereof.

         See "THE PACIFIC MEETING -- Record Date."

         Vote Required; Quorum

         SBB. The affirmative  vote of the holders of at least a majority of the
total number of  outstanding  shares of SBB Common Stock entitled to vote at the
SBB Meeting is required to approve (a) the  Agreements  and the Merger,  (b) the
Bylaw  Amendment,  and (c) the Article  Amendment.  Each holder of shares of SBB
Common Stock outstanding on the SBB Record Date will be entitled to one vote for
each share held of record upon each matter properly submitted at the SBB Meeting
and any  postponement  or adjournment  thereof.  A majority of all shares of SBB
Common Stock entitled to vote, represented in person or by proxy,  constitutes a
quorum.  Abstentions 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) are each  included in the
calculation  of the  number of shares  present  for  determination  of a quorum;
however,  they are not counted as votes in favor of the matters to be considered
at the SBB Meeting.



                                        2

<PAGE>



         See "THE SBB MEETING -- Quorum, Voting and Revocation of Proxies",  "--
Vote  Required to Approve the  Merger",  "-- Vote  Required to Approve the Bylaw
Amendment", and "-- Vote Required to Approve the Article Amendment."

         Pacific.  The affirmative vote of the holders of at least a majority of
the total number of outstanding  shares of Pacific Common Stock entitled to vote
at the Pacific  Meeting is required  to approve the  Agreements  and the Merger.
Each holder of shares of Pacific Common Stock  outstanding on the Pacific Record
Date will be entitled to one vote for each share held of record upon each matter
properly  submitted at the Pacific  Meeting and any  postponement or adjournment
thereof.  A majority  of all shares of Pacific  Common  Stock  entitled to vote,
represented in person or by proxy, constitutes a quorum. Abstentions 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) are each included in the calculation of the number of
shares present for determination of a quorum;  however,  they are not counted as
votes in favor of the Agreements and the Merger.

         See "THE PACIFIC  MEETING -- Quorum,  Voting and Revocation of Proxies"
and "-- Vote Required."

         Revocation of Proxies

         The  presence  of a  shareholder  of  either  SBB  or  Pacific  at  the
respective SBB Meeting or Pacific Meeting (or at any postponement or adjournment
thereof) will not automatically  revoke such  shareholder's  proxy.  However,  a
shareholder may revoke a proxy at any time prior to its exercise by (a) delivery
to the  Secretary  of SBB or Pacific,  as  appropriate,  of a written  notice of
revocation prior to or at the relevant meeting (or, if such meeting is adjourned
or  postponed,  prior to or at the time the  adjourned or  postponed  meeting is
actually held); (b) submission of a duly executed proxy bearing a later date; or
(c)  attending  the  relevant  meeting  (or,  if such  meeting is  adjourned  or
postponed, by attending the adjourned or postponed meeting) and voting in person
thereat.

         In the case of a shareholder of SBB, any written revocation of proxy or
other  related  communications  should be addressed  to Jay D. Smith,  Corporate
Secretary, Santa Barbara Bancorp, 1021 Anacapa Street, Santa Barbara, California
93101. In the case of a shareholder of Pacific,  any written revocation of proxy
or other  related  communications  should  be  addressed  to  James  L.  Gattis,
Corporate Secretary,  Pacific Capital Bancorp,  307 South Main Street,  Salinas,
California 93901.

         See "THE SBB MEETING -- Quorum,  Voting and  Revocation of Proxies" and
"THE PACIFIC MEETING --Quorum, Voting and Revocation of Proxies."

         Security Ownership of Management

         SBB. As of the SBB Record Date, the directors and executive officers of
SBB beneficially  held, in the aggregate,  the ability to direct the voting with
respect to _______ shares of SBB Common Stock, comprising approximately ____% of
the  voting  power of the SBB  Common  Stock  outstanding.  Such  directors  and
executive  officers  of SBB have  informed  SBB that they  intend to vote  their
shares  of SBB  Common  Stock in  favor  of (i)  approval  and  adoption  of the
Agreements  and the  Merger,  (ii)  approval of the Bylaw  Amendment,  and (iii)
approval of the Article Amendment.

         See "INFORMATION  ABOUT THE PARTIES -- Security  Ownership of Principal
Shareholders and Management of SBB."

         Pacific.  As of the Pacific  Record Date,  the  directors and executive
officers of Pacific  beneficially held, in the aggregate,  the ability to direct
the voting with respect to _______  shares of Pacific  Common Stock,  comprising
approximately ____% of the voting power of the Pacific Common Stock outstanding.
Such directors and executive officers of Pacific have informed Pacific that they
intend to vote their  shares of Pacific  Common  Stock in favor of approval  and
adoption of the Agreements and the Merger.

         See "INFORMATION ABOUT  THE PARTIES -- Security Ownership of Management
of Pacific."



                                        3

<PAGE>



Risk Factors

         In  deciding  whether to vote for  approval of the  Agreements  and the
Merger,  holders of SBB Common Stock and Pacific  Common Stock should  carefully
consider certain risk factors associated with the Merger.

         See  "RISK  FACTORS"   beginning  on  page  17   of  this  Joint  Proxy
Statement/Prospectus.

Merger

         Effects of Merger

         On the  Effective  Date (defined  herein),  Pacific will merge with and
into SBB. SBB will be the surviving  corporation in the Merger and will continue
its corporate  existence  under  California law with the resulting name "Pacific
Capital  Bancorp." The Agreements  provide that the Articles of Incorporation of
SBB  shall  be  amended  to  change  the name of SBB  such  that  the  Surviving
Corporation will operate under the name "Pacific Capital  Bancorp." The separate
corporate  existence  of Pacific  will cease at the  Effective  Time (as defined
herein) of the Merger.

         Upon the Merger becoming effective,  each share of Pacific Common Stock
issued and  outstanding at the Effective Time (other than shares which have been
voted  against  approval  of the  Merger and with  respect to which  dissenters'
rights shall have been perfected in accordance with Chapter 13 of the California
General  Corporation Law (the "GCL")) will be converted  automatically  into the
right to receive shares of SBB Common Stock as herein described.

         Subject to the terms and conditions  contained in the Agreements,  as a
result of the Merger each share of Pacific  Common Stock will be converted  into
the right to receive 1.935 shares  (defined  herein as the "Exchange  Ratio") of
SBB Common Stock.  No fractional  shares of SBB Common Stock will be issued and,
in lieu thereof,  holders of fractional shares of Pacific Common Stock who would
otherwise be entitled to a fractional  share interest in SBB Common Stock (after
taking into account all shares of Pacific Common Stock held by such holder) will
be paid an amount of cash equal to the product of such fractional share interest
and the average of the closing bid and asked price of a share of Pacific  Common
Stock as  reported  on Nasdaq on the  business  day  immediately  preceding  the
Effective  Date.  See "THE  MERGER  --  Structure  of the  Merger",  "--  Merger
Consideration",  "--  Exchange  of Stock  Certificates;  Fractional  Shares." In
addition,   pursuant  to  the  terms  of  the  Agreements  all  outstanding  and
unexercised  options to purchase  shares of Pacific  Common Stock  granted under
various stock option plans maintained by Pacific will be assumed by SBB and will
be converted  automatically  at the Effective Date into, and will become,  stock
options to purchase  shares of Common Stock of the  Surviving  Corporation.  See
"THE MERGER -- Effect of Merger on Employee  Benefit and Stock  Option  Plans --
Stock Option Plans."

         For information on how shareholders of Pacific will be able to exchange
certificates  representing  shares of  Pacific  Common  Stock  for  certificates
representing  Surviving Corporation Common Stock, see "THE MERGER -- Exchange of
Stock Certificates; Fractional Shares."

         Effective Date

         The Merger will become effective on the date (the "Effective Date") and
at the time  (the  "Effective  Time")  that the  Merger  Agreement  and  related
documents  are filed  with the  California  Secretary  of State.  Subject to the
satisfaction  of  conditions  specified  in the  Reorganization  Agreement,  the
parties  expect the Merger to become  effective  on or about  December 31, 1998,
although there can be no assurance as to whether or when the Merger will occur.

         See  "THE  MERGER  --  Effective  Date"  and "-- Certain  Conditions to
Consummation of the Merger."

         Value of Merger

         As of November ___,  1998,  based on the Exchange Ratio and the average
of the closing bid and asked price of SBB Common Stock as reported on Nasdaq for
that date,  the  Merger  had a per share  value of $______ to holders of Pacific
Common Stock, and the approximate total value of the Merger Consideration to the
shareholders  of Pacific was $______  million.  Because  the  Exchange  Ratio is
fixed, the market value of the Merger Consideration as stated above may increase
or decrease during the pendency of the transaction depending on the market price
of SBB Common Stock.



                                        4

<PAGE>



         Based upon (i) the ____________  shares of SBB Common Stock outstanding
on the SBB Record Date,  (ii) the _________  shares of SBB Common Stock reserved
for  issuance  upon the  exercise of stock  options to acquire SBB Common  Stock
outstanding on the SBB Record Date,  (iii) the ________ shares of Pacific Common
Stock  outstanding  on the Pacific  Record Date (as  defined  herein),  (iv) the
________  shares of Pacific Common Stock reserved for issuance upon the exercise
of stock  options to acquire  Pacific  Common Stock  outstanding  on the Pacific
Record Date, and assuming (i) the exercise of all outstanding options to acquire
shares of SBB Common Stock and Pacific  Common  Stock,  and (ii) no  dissenters'
rights are perfected by any  shareholder of either SBB and Pacific,  shares held
by SBB and Pacific  shareholders  after consummation of the Merger are estimated
to represent  approximately ______ percent and _____ percent,  respectively,  of
the Surviving  Corporation.  Without  giving effect to the exercise of any stock
options  to acquire  shares of SBB  Common  Stock and  Pacific  Common  Stock as
assumed above, shares held by SBB and Pacific shareholders after consummation of
the Merger are estimated to represent  approximately _______ percent and _______
percent,  respectively,  of the Surviving Corporation.  See "MERGER -- Effect of
Merger on Employee Benefit and Stock Option Plans."

         Reasons for Merger and Recommendation of Boards of Directors

         The SBB Board and the Pacific Board have each unanimously  approved the
Agreements and the transactions contemplated thereby,  including the Merger. The
Board of  Directors  of each of SBB and Pacific  believe that the Merger and the
transactions  contemplated  by the  Agreements  are in the best interests of the
shareholders  of each of SBB and Pacific and recommend a vote "FOR" approval and
adoption of the  Agreements  and the  Merger.  The  conclusions  of the Board of
Directors  of SBB and Pacific with respect to the Merger are based upon a number
of factors  more fully  described  herein,  including  the  receipt of  fairness
opinions from their respective financial advisors.

         See "THE  MERGER --  Background  of the  Merger",  "--  Reasons for the
Merger;   Recommendation   of  the  SBB  Board",   "--Reasons  for  the  Merger;
Recommendation of the Pacific Board" and "-- Opinion of Financial Advisors."

         In  addition,  the SBB Board  also  recommends  a vote  "FOR" the Bylaw
Amendment and the Article Amendment.

         Opinions of Financial Advisors

         SBB.  The Bank  Advisory  Group,  Inc.  ("Advisory"),  SBB's  financial
advisor, has rendered its written opinion,  dated as of _____________,  1998, to
the SBB Board to the effect that,  as of such date,  the terms of the Merger are
fair to the  shareholders  of SBB from a  financial  point of view.  The written
opinion of Advisory (the "Advisory  Fairness Opinion") is attached to this Joint
Proxy  Statement/Prospectus as Appendix F and should be read by the shareholders
of SBB in its entirety.

         See "THE MERGER -- Opinion of  Financial  Advisors -- SBB",  which also
contains a discussion of the fees to be paid to Advisory.


         Pacific.  Van  Kasper & Company  ("Van  Kasper"),  Pacific's  financial
advisor, has rendered its written opinion,  dated as of _____________,  1998, to
the Pacific Board to the effect that, as of such date,  the terms of the Merger,
including  the Exchange  Ratio and the  conversion  of shares of Pacific  Common
Stock into shares of SBB Common Stock,  are fair to the  shareholders of Pacific
from a  financial  point of view.  The  written  opinion of Van Kasper (the "Van
Kasper Fairness  Opinion") is attached to this Joint Proxy  Statement/Prospectus
as Appendix E and should be read by the shareholders of Pacific in its entirety.

         See "THE MERGER -- Opinion of  Financial  Advisors --  Pacific",  which
also contains a discussion of the fees to be paid to Van Kasper.

         Regulatory Approvals

         The Merger is subject to prior  approval by the Board of  Governors  of
the Federal Reserve System (the "Federal  Reserve Board") under Section 3 of the
BHC Act. SBB  submitted  an  application  seeking  approval of the Merger to the
Federal Reserve Board on September ___, 1998, and such application is pending.

         See "THE MERGER -- Regulatory  Approvals" and "-- Certain Conditions to
Consummation of the Merger."


                                        5

<PAGE>



         Accounting Treatment

         The Merger is  expected  to qualify as a  "pooling  of  interests"  for
accounting and financial reporting purposes.  The receipt of (i) an opinion from
KPMG Peat Marwick LLP, the  independent  public  accountants of Pacific,  to the
effect  that  Pacific  qualifies  as an entity that may be a party to a business
combination  for which the  "pooling  of  interests"  method  of  accounting  is
available,  and (ii) an opinion from Arthur Andersen LLP, the independent public
accountants  of SBB,  confirming  that the Merger will  qualify for  "pooling of
interests"  accounting,  is a condition to SBB's and  Pacific's  obligations  to
consummate  the Merger.  If such  condition  is not met,  the Merger will not be
consummated unless the condition is waived by SBB and Pacific. As of the date of
this Joint Proxy  Statement/Prospectus,  SBB and  Pacific  are not aware,  after
consultation  with  their  respective  independent  public  accountants,  of any
existing  facts or  circumstances  which would preclude such opinions from being
issued by KPMG Peat Marwick LLP and Arthur Andersen LLP.

         See "THE MERGER -- Accounting  Treatment" and "-- Certain Conditions to
Consummation of the Merger."

         Certain Federal Income Tax Considerations

         The Merger is intended to be a tax-free  reorganization so that no gain
or loss  would be  recognized  by SBB or  Pacific,  and no gain or loss would be
recognized by shareholders of Pacific Common Stock,  except with respect to cash
received for any fractional  shares and except for any cash payments which might
be received by shareholders properly exercising dissenters' rights. Consummation
of the Merger is  conditioned  upon  receipt by SBB and Pacific of an opinion of
Jenkens &  Gilchrist,  a  Professional  Corporation,  to the effect that (i) the
Merger will constitute a reorganization  within the meaning of Section 368(a) of
the Internal Revenue Code of 1986, as amended (the "Code"); (ii) no gain or loss
will be recognized  for federal income tax purposes by holders of Pacific Common
Stock who  receive  shares of SBB  Common  Stock in the  Merger  (other  than in
respect of any cash received in lieu of fractional share interests in SBB Common
Stock);  (iii)  the  basis  of  shares  of  SBB  Common  Stock  received  by the
shareholders  of  Pacific  will be the same as the basis of  shares  of  Pacific
Common Stock  exchanged  therefor;  and (iv) the holding period of the shares of
SBB Common Stock received by such  shareholders  will include the holding period
of the shares of Pacific Common Stock exchanged  therefor,  provided such shares
were held as capital assets as of the Effective Date.

         Any holder of Pacific Common Stock who perfects his or her dissenters's
appraisal rights and receives cash will recognize taxable gain or loss.

         THE  FOREGOING  IS A GENERAL  SUMMARY  OF ALL OF THE  MATERIAL  FEDERAL
INCOME TAX CONSEQUENCES OF THE MERGER TO SHAREHOLDERS OF PACIFIC, WITHOUT REGARD
TO THE PARTICULAR FACTS AND  CIRCUMSTANCES OF EACH  SHAREHOLDERS'  TAX SITUATION
AND  STATUS.  BECAUSE  CERTAIN  TAX  CONSEQUENCES  MAY VARY  DEPENDING  UPON THE
PARTICULAR   CIRCUMSTANCES   OF  EACH   SHAREHOLDER,   IT  IS  RECOMMENDED  THAT
SHAREHOLDERS  OF PACIFIC COMMON STOCK CONSULT THEIR OWN TAX ADVISORS  CONCERNING
THE FEDERAL (AND ANY STATE, LOCAL AND FOREIGN) TAX CONSEQUENCES OF THE MERGER IN
THEIR PARTICULAR CIRCUMSTANCES.

         See "THE  MERGER - Federal  Income Tax  Consequences"  and "--  Certain
Conditions to Consummation of the Merger."

         Interests of Certain Persons in the Merger

         Certain  members of  management of each of SBB and Pacific and of their
respective Boards have certain interests in the transactions contemplated by the
Agreements that are in addition to their interests  generally as shareholders of
SBB and Pacific, as the case may be. For example, certain executive officers and
directors  of Pacific  will  become  executive  officers  and  directors  of the
Surviving Corporation following consummation of the Merger. These interests also
include "change-in-control" payments to be made to certain executive officers of
Pacific  upon  consummation  of the  Merger  pursuant  to the terms of  existing
Amended and Restated  Executive  Salary  Continuation  Benefits  Agreements  and
employment  contracts.  In addition,  these  interests  include,  among  others,
provisions in the Reorganization  Agreement relating to directors' and officers'
liability insurance, participation in benefit plans of the Surviving Corporation
following the Merger, and the conversion of options to acquire shares of Pacific
Common Stock into options to acquire shares of SBB Common Stock.



                                        6

<PAGE>



         The SBB Board and the Pacific  Board were aware of these  interests and
considered  them,  among other  matters,  in approving  the  Agreements  and the
transactions contemplated thereby.

         See "THE MERGER --  Interests of Certain  Persons in the  Merger",  "--
Conduct of Business  Pending the Merger and Certain  Other  Agreements"  and "--
Management and Operations After the Merger."

         Rights of Dissenting Shareholders

         In connection with the Merger,  the shareholders of SBB and Pacific may
be entitled to dissenters' rights under Chapter 13 of the GCL, the text of which
is attached to this Joint Proxy  Statement/Prospectus as Appendix G. Because SBB
Common  Stock  and  Pacific  Common  Stock  are  each  listed  on  Nasdaq,  such
dissenters'  rights  will  be  available  to  shareholders  of  each  respective
corporation only if the holders of five percent (5%) or more of SBB Common Stock
or Pacific Common Stock, respectively,  make written demand upon such respective
corporation for the purchase of dissenting  shares in accordance with Chapter 13
of the GCL. If this condition is satisfied,  in order to be entitled to exercise
dissenters' rights, a notice must be sent by the shareholder and received by SBB
or  Pacific,  as the case may be, on or before  the date of the SBB  Meeting  or
Pacific  Meeting,  respectively,  and any such shareholder must vote AGAINST the
approval of the Agreements and the Merger.  Failure to send such notice and vote
against  the Merger will  result in a waiver of such  shareholder's  dissenters'
rights.

         See "THE MERGER -- Rights of Dissenting Shareholders" and Appendix G.

The Reorganization Agreement

         Conduct of Business Pending the Merger and Certain Other Agreements

         The parties have agreed to use their respective best efforts to perform
and fulfill all of their  respective  conditions and obligations to be performed
or fulfilled  pursuant to the terms of the Reorganization  Agreement,  including
obtaining  all  consents  and  approvals  from third  parties,  and to cause the
consummation  of the Merger in accordance  with the terms of the  Reorganization
Agreement at the earliest  practicable time. In addition,  each party has agreed
to, and will use its respective best efforts to cause its directors and officers
to, use all commercially reasonable efforts to consummate the Merger in a manner
that will qualify the Merger for "pooling of  interests"  accounting  treatment.
See "THE MERGER --  Accounting  Treatment."  The parties have also agreed to use
their  respective  best efforts to have each of its directors vote, or caused to
be voted,  all shares of SBB Common Stock or Pacific  Common Stock,  as the case
may be, beneficially owned by them in favor of the Merger.

         In addition,  during the pendency of the transactions described in this
Joint Proxy  Statement/Prospectus,  SBB and Pacific  have each agreed to, and as
applicable to cause their respective  subsidiaries  to, among other things,  (i)
operate only in the  ordinary  course of business  and  consistent  with prudent
banking  practices;  (ii) use all  reasonable  efforts to preserve  its business
organization  intact and to retain present  customers,  depositors and employees
and to maintain its assets in good  operating  condition  and repair  (except as
required  by  prudent  business  practices);  (iii)  perform  obligations  under
contracts,  leases and documents relating to or affecting its assets, properties
and business  (except such  obligations  as may be  reasonably  disputed);  (iv)
maintain  insurance  policies  now in effect or renewals  thereof;  (v) file all
reports  required  to be filed with  governmental  authorities  and  observe and
conform to applicable laws, rules and regulations (except as may be contested in
good faith by  appropriate  proceedings);  (v) timely  file tax  returns and pay
taxes and assessments that become due and payable (except as may be contested in
good faith by appropriate proceedings);  (vi) withhold appropriate payroll taxes
and to pay the same to proper tax receiving officers;  and (vii) account for all
transactions  and prepare  financial  statements  in accordance  with  generally
accepted   accounting   principles   (unless  otherwise  subject  to  regulatory
accounting principles).

         Each  party has also  agreed to refrain  from  taking  certain  actions
during the pendency of the Merger, without the prior consent of the other party,
including,  among  others,  (i)  taking  any action  that  would  reasonably  be
anticipated to result in a Material Adverse Change (as defined below), (ii) take
any action that would cause or permit the representations and warranties made by
such  party to be  inaccurate  at the time  when the  parties  meet to  exchange
closing  documents and certificates and determine  whether all of the conditions
to  consummation of the Merger have been met (the  "Closing");  (iii) change the
articles of  incorporation  or bylaws (except with respect to SBB) or authorized
capital stock, (iv) grant any new stock options or accelerate the vesting of any
existing stock options, except as provided in the Reorganization  Agreement, (v)
accelerate  the vesting of pension or other  benefits in favor of any employees,
(vi) acquire any capital stock or other  equity securities or acquire any equity


                                        7

<PAGE>
or ownership  interest in any bank,  corporation,  partnership  or other entity,
(vii)  mortgage,  pledge or  subject to lien or  charge,  or grant any  security
interest  or any  other  encumbrance  or  restriction  on  any of its  property,
business or assets,  except in the ordinary  course of business  and  consistent
with  prudent  banking  practices,  (viii)  sell,  transfer,  lease to others or
otherwise  dispose  of any of its  assets or cancel  or  compromise  any debt or
claim, or waive or release any right or claim of material  value,  except in the
ordinary  course of business and  consistent  with past  practices  and safe and
sound  banking  practices,  or (ix) make any change in any  accounting  methods,
principles  or material  practices,  except as required  by  generally  accepted
accounting principles.

         As used in the  Reorganization  Agreement,  the term "Material  Adverse
Change" means any material adverse change  (excluding the occurrence of expenses
in connection with the Merger) since December 31, 1997 in the business,  results
of  operations,   condition  (financial  or  otherwise),   assets,   properties,
liabilities (absolute, accrued, contingent or otherwise), reserves of Pacific or
SBB, as the case may be, and their respective subsidiaries taken as a whole, and
specifically includes,  without limitation,  with respect to Pacific, any change
that reduces the tangible shareholders' equity of Pacific below $70,000,000, or,
with respect to SBB, any change that reduces the tangible  shareholders'  equity
of SBB below $118,000,000.

         Conditions to the Merger

         Each  party's  obligation  to  effect  the  Merger  is  subject  to the
fulfillment or waiver, if legally permissible, of certain conditions prior to or
at the Closing including, among others: (i) the accuracy in all material respect
of representations and warranties of each party to the Reorganization Agreement;
(ii) the performance or compliance in all material  respect with all agreements,
terms, covenants and conditions required by the Reorganization Agreement;  (iii)
approval of the  Agreements and the Merger by the holders of at least a majority
of the SBB Common Stock and the Pacific  Common Stock  entitled to vote thereon,
and the approval of the Bylaw Amendment by the holders of at least a majority of
the SBB Common Stock entitled to vote thereon; (iv) the receipt of all approvals
or  consents  of the  transactions  contemplated  by  the  Agreements  from  all
necessary  governmental agencies,  authorities and third parties,  including the
Commission and the Federal  Reserve  Board,  and the expiration of all statutory
waiting periods with respect to such  approvals;  (v) the absence of any action,
statute,  rule,  regulation or order,  including  the entry of a preliminary  or
permanent  injunction,  that  would  make the  Reorganization  Agreement  or the
agreements  and   transactions   contemplated   thereby   illegal,   invalid  or
unenforceable or would otherwise impose material limits on the ability of either
party to consummate the Merger;  (vi) the delivery by each party to the other of
the closing  deliveries  identified in the Reorganization  Agreement;  (vii) the
receipt  by each  party of an  unqualified  written  opinion  of its  respective
investment  advisor to the effect that the Merger is fair to the shareholders of
such party  from a  financial  point of view;  (viii)  receipt of an  accounting
opinion to the effect  that the Merger  qualifies  for  "pooling  of  interests"
accounting treatment; (ix) the Registration Statement, of which this Joint Proxy
Statement/Prospectus  forms  a part,  shall  have  become  effective  under  the
Securities Act, no stop order  suspending the  effectiveness of the Registration
Statement  shall be in effect or proceeding  for that purpose  pending before or
threatened  by the  Commission,  and all state  securities  permits or approvals
required by applicable state securities laws to consummate the Merger shall have
been  received and remain in effect;  (x) receipt of a legal  opinion on certain
tax  aspects  of the  Merger;  (xi)  the  holders  of not  more  than a  certain
percentage (not to exceed 9.9%) of the issued and outstanding  shares of Pacific
Common  Stock shall have  demanded or be entitled to demand  payment of the fair
value of their shares as dissenting  shareholders under applicable provisions of
the GCL,  such  that the  receipt  of cash  pursuant  to the  exercise  of their
appraisal rights, when combined with all other cash transactions  required to be
considered under generally accepted accounting  principles,  would result in the
Merger not qualifying for "pooling of interests" accounting treatment; (xii) all
accounting and tax  treatment,  entries and  adjustments in connection  with the
transactions  contemplated by the  Reorganization  Agreement shall be reasonably
satisfactory to each party,  and neither party shall have received  notification
from any  proper  regulatory  authority  that such  party's  accounting  and tax
treatment,  entries  and  adjustments  used in  connection  with the  Merger are
improper;  and (xiii)  the  occurrence  of no  Material  Adverse  Changes in the
business of SBB or Pacific since December 31, 1997.

         The  obligation  of Pacific to effect the Merger is further  subject to
the  condition  that SBB shall have taken all  actions  necessary  to effect the
Bylaw  Amendment.  See "THE SBB MEETING -- Matters to be Considered -- The Bylaw
Amendment."

         The  obligation  of SBB to effect the Merger is further  subject to the
condition  that SBB shall have received from Pacific,  at least 31 days prior to
the date on which the Closing takes place (such date being referred to herein as
the "Closing Date"),  the signed letters from each  "affiliate" of Pacific.  See
"THE MERGER -- Resale of SBB Common Stock."

                                        8
<PAGE>



         See "THE MERGER -- Certain Conditions to Consummation of the Merger."

         Termination of Reorganization Agreement

         The  Reorganization  Agreement  may  be  terminated,   and  the  Merger
abandoned,  prior to the Effective Date,  either before or after approval by the
shareholders of SBB and Pacific, upon the occurrence of various events and under
certain  circumstances,  including (i) by the mutual consent of SBB and Pacific;
(ii) by either party in the event of the failure of the respective  shareholders
to approve  the  Merger;  (iii) by either  party upon the  failure to obtain any
approval,  consent  or waiver of a  governmental  authority  required  to permit
consummation of the transactions  contemplated by the Reorganization  Agreement;
and (iv) by Pacific in the event that  shares of SBB Common  Stock  trade  below
certain  price levels prior to the Effective  Date.  In addition,  under certain
circumstances,  a fee of  $7,650,000,  plus  certain  costs and  expenses not to
exceed  $250,000,  may be  payable  by SBB or  Pacific  to the other  party upon
termination of the Reorganization Agreement.

         See "THE MERGER -- Termination of the Reorganization Agreement."

Mutual Stock Option Agreements

         As an  inducement  to SBB to enter into the  Reorganization  Agreement,
Pacific and SBB entered into the Pacific Stock Option Agreement,  dated July 20,
1998, (the "Pacific Stock Option Agreement"),  pursuant to which Pacific granted
SBB an  irrevocable  option to purchase from Pacific  878,269  shares of Pacific
Common Stock (subject to adjustment, but in no event to exceed 19.5% of the then
outstanding shares of Pacific Common Stock), at a price of $58.00 per share (the
"Pacific Option"). A copy of the Pacific Stock Option Agreement is included with
the Joint Proxy Statement/Prospectus as Appendix D and is incorporated herein by
reference.  The exercise price was determined through negotiations,  taking into
account the  recently  prevailing  price range of Pacific  Common Stock prior to
announcement  of the Merger.  SBB may exercise the Pacific  Option only upon the
occurrence of certain limited and specifically  defined events described therein
(none of which has  occurred as of the date  hereof).  Such  events  include the
authorization  of Pacific to effect a merger with any entity  other than SBB. At
the request of the holder of the Pacific  Option,  under certain  circumstances,
Pacific is obligated to  repurchase,  pursuant to a formula price set out in the
Pacific  Stock Option  Agreement,  the Pacific  Option and any shares of Pacific
Common Stock purchased upon the exercise of the Pacific Option and  beneficially
owned by such holder at that time.

         As an inducement to Pacific to enter into the Reorganization Agreement,
SBB and Pacific  entered  into the SBB Stock  Option  Agreement,  dated July 20,
1998,  (the "SBB Stock Option  Agreement",  and together  with the Pacific Stock
Option Agreement, the "Stock Option Agreements"),  pursuant to which SBB granted
Pacific an irrevocable option to purchase from SBB up to 3,002,505 shares of SBB
Common Stock (subject to adjustment, but in no event to exceed 19.5% of the then
outstanding  shares of SBB  Common  Stock),  at a price of $30.00 per share (the
"SBB  Option").  A copy of the SBB Stock Option  Agreement is included  with the
Joint Proxy  Statement/Prospectus  as Appendix C and is  incorporated  herein by
reference.  The exercise price was determined through negotiations,  taking into
account  the  recently  prevailing  price  range of SBB  Common  Stock  prior to
announcement  of the Merger.  Pacific may  exercise the SBB Option only upon the
occurrence of certain limited and specifically  defined events described therein
(none of which has occurred as of the date hereof). At the request of the holder
of the SBB Option, under certain circumstances,  SBB is obligated to repurchase,
pursuant to a formula price set out in the SBB Stock Option  Agreement,  the SBB
Option and any shares of SBB Common Stock purchased upon the exercise of the SBB
Option and beneficially owned by such holder at that time.

         The  purchase  of any shares of Pacific  Common  Stock  pursuant to the
Pacific  Stock  Option  Agreement,  or the  purchase of any shares of SBB Common
Stock pursuant to the SBB Stock Option Agreement,  is subject to compliance with
applicable law, including receipt of any necessary approvals under the BHC Act.

         The Stock Option  Agreements  are  intended to increase the  likelihood
that the Merger will be  consummated  in accordance  with the terms set forth in
the Agreements by discouraging  persons who might now, or prior to the Effective
Date, be interested in acquiring all of or a significant interest in the capital
stock of Pacific or SBB from considering or proposing such an acquisition.

         In the event  that the  shareholders  of either  Pacific or SBB fail to
approve the Merger, either SBB or Pacific may terminate the Agreements. See "THE
MERGER -- Termination of the Reorganization Agreement." If such termination


                                        9

<PAGE>



occurs prior to the  occurrence of a Purchase  Event or a  Preliminary  Purchase
Event (as such terms are  defined  in the Stock  Option  Agreements),  the Stock
Option Agreements will automatically terminate at such time.

         See "THE MERGER -- Mutual Stock Option Agreements"

Management and Operations after Merger

         As  of the  Effective Date, and  assuming that the  Bylaw Amendment has
been approved by  the shareholders of  SBB at the  SBB  Meeting,  the  Board  of
Directors of the  Surviving Corporation will  consist of fifteen (15) directors;
eleven (11) of  whom represent all  of the current directors of SBB and four (4)
of whom are current members of the  Pacific Board.  Pursuant to the terms of the
Merger Agreement,  the four  representatives of  Pacific to  be appointed to the
Board of Directors of the Surviving Corporation will be: D. Vernon Horton; Roger
C. Knopf; Clayton C. Larson; and William H. Pope. Each of Messrs. Horton, Knopf,
Larson and Pope  currently serves on  the Pacific Board.  Mr. Horton is also the
Chairman of Pacific, and Mr. Larson is the President of Pacific.

         The executive officers of the Surviving Corporation will consist of the
current executive officers of SBB plus Messrs.  Horton and Larson, who will each
be  appointed  to serve  as a Vice  Chairman  of the  Surviving  Corporation.  A
complete  listing of the directors and officers of the Surviving  Corporation is
included as Schedule One to the Merger  Agreement,  attached to this Joint Proxy
Statement/Prospectus as Appendix B.

         It is anticipated  that the management and operation of SBB and Pacific
will be integrated  after the Merger,  and,  except as provided above, it is not
anticipated  that the  management  of SBB will be  affected  as a result  of the
Merger.  Following the Merger,  it is  anticipated  that each of SBB&T and First
National Bank (as the continuing bank in the Affiliate  Merger) will continue to
operate as separate subsidiaries of the Surviving Corporation.  Nevertheless, it
is  anticipated  that certain  duplicative  operations of these  entities may be
consolidated.

         The Merger is  expected to generate  certain  cost  savings and revenue
enhancements for the Surviving Corporation.  The total after-tax impact of these
cost savings is estimated to be  $2,670,000  for the first full year of combined
operations,  or approximately  $0.10 per diluted share, on a pro forma basis. In
addition to cost savings, it is anticipated that the Surviving  Corporation will
experience certain revenue  enhancements through the introduction of an expanded
array  of  products  and  services  in  the  markets   served  by  the  combined
organization.

         One-time  charges  associated  with the  Merger,  including  investment
banking fees, legal and other professional fees,  change-in-control payments and
contract termination fees, are anticipated to be between $7.5 and $8 million and
will likely be taken in the fourth  quarter of 1998,  the same  quarter that the
Merger is expected to close.

         The Surviving Corporation will have its corporate headquarters in Santa
Barbara, California and will operate under the name "Pacific Capital Bancorp."

         See "THE MERGER -- Management  and  Operations  After the Merger",  "--
Interests of Certain Persons in the Merger" and "PRO FORMA FINANCIAL DATA."

Comparison of Shareholder Rights

         The rights of shareholders of Pacific Common Stock and SBB Common Stock
differ in certain  respects.  The rights of shareholders of Pacific Common Stock
currently  are  determined  by  reference  to the  GCL,  Pacific's  Articles  of
Incorporation  and Pacific's  Bylaws.  At the Effective  Time,  shareholders  of
Pacific will become shareholders of the Surviving Corporation, and, accordingly,
the rights of such  shareholders  will  thereafter be determined and governed by
reference to the Articles of Incorporation, Bylaws and other corporate documents
of SBB. The material  differences  between the rights of shareholders of Pacific
Common  Stock  and SBB  Common  Stock  include  (i) the  procedures  for  taking
shareholder action by written consent and without a meeting; (ii) the procedures
for  nominating a person for election as a director;  (iii) the  procedures  for
shareholders  to submit  proposals,  other  than  nominations  for  election  as
directors,  for action by the shareholders at any meeting of  shareholders;  and
(iv) the  shareholder  vote  required for certain  amendments to the articles of
incorporation.

         See "DESCRIPTION OF SBB  CAPITAL STOCK" and  "COMPARISON OF SHAREHOLDER
RIGHTS."



                                       10

<PAGE>



         In  addition, if  the holders of  SBB Common Stock  approve the Article
Amendment,  another  difference  between the rights of holders of Pacific Common
Stock and SBB Common  Stock will be that holders of SBB Common Stock will not be
permitted to cumulate their votes in the election of directors.  The GCL permits
a California  corporation that is a listed  corporation  (i.e., one whose shares
are listed on Nasdaq (and have at least 800  shareholders) or the New York Stock
Exchange or the American Stock Exchange) to amend its articles of  incorporation
to eliminate cumulative voting. Because SBB Common Stock is quoted on Nasdaq and
SBB has at  least  800  shareholders  of  record,  SBB  qualifies  as a  "listed
corporation" under the GCL. Accordingly,  with the approval of a majority of the
outstanding  shares of SBB Common Stock,  SBB's Articles of Incorporation may be
amended to eliminate the ability to cumulate votes in the election of directors.
If the Article  Amendment is approved and the Merger is consummated,  holders of
Pacific  Common Stock who exchange their stock for SBB Common Stock as described
herein  will no  longer  have the right to  cumulate  votes in the  election  of
directors.  Holders of Pacific Common Stock currently have the right to cumulate
their votes in the election of directors.

         See "THE SBB MEETING--Matters to be Considered--The Article Amendment."

Comparative Stock Prices

         Shares of SBB Common  Stock are traded in the  over-the-counter  market
and are listed on Nasdaq under the symbol "SABB." Shares of Pacific Common Stock
are also traded in the  over-the-counter  market and are listed on Nasdaq  under
the symbol  "PABN." The following  table sets forth the high and low sale prices
of SBB Common  Stock and  Pacific  Common  Stock for the periods  indicated,  as
reported on Nasdaq.  Per share  prices have been  restated,  as  applicable,  to
reflect all stock splits and stock dividends during the periods presented.
<TABLE>
<CAPTION>
<S>                                                  <C>         <C>             <C>            <C>


                                                     SBB Common Stock            Pacific Common Stock
                                                ----------------------------------------------------------------

                                                     High          Low           High           Low
                                                ----------------------------------------------------------------


1996       First Quarter.......................      $ 12.67     $  9.88         $ 28.09        $ 24.05
           Second Quarter......................        13.50       11.69           27.63          25.47
           Third Quarter.......................        13.94       12.63           26.67          24.77
           Fourth Quarter......................        14.07       12.63           27.63          25.38

1997       First Quarter.......................      $ 16.00     $ 13.82         $ 27.62        $ 23.10
           Second Quarter......................        23.25       14.94           33.93          27.02
           Third Quarter.......................        24.19       19.63           33.10          30.60
           Fourth Quarter......................        24.50       22.75           42.25          32.74

1998       First Quarter.......................      $ 27.88     $ 22.13         $ 43.25        $ 40.00
           Second Quarter......................        34.00       25.50           48.75          42.00
           Third Quarter.......................      -------     -------         -------        -------
           Fourth Quarter......................      -------     -------         -------        -------
             (through November __, 1998)
</TABLE>

         On July 17, 1998, the last trading day prior to public  announcement of
the  proposed  Merger,  the closing  sale prices of SBB Common Stock and Pacific
Common Stock, as reported on Nasdaq, were $32.25 per share and $49.00 per share,
respectively.  On November ____, 1998, the latest practicable trading day before
the printing of this Joint Proxy  Statement/Prospectus,  the closing sale prices
of SBB Common  Stock and Pacific  Common  Stock,  as  reported  on Nasdaq,  were
$______ per share and $_______ per share, respectively.











                                       11

<PAGE>



         The following  table sets forth the closing price of the Pacific Common
Stock and the  equivalent  per share price of SBB Common Stock giving  effect to
the  Merger  on July  17,  1998  (the  last  trading  day  prior  to the  public
announcement  of the  proposed  Merger)  and  November  ___,  1998  (the  latest
practicable   trading   day   before   the   printing   of  this   Joint   Proxy
Statement/Prospectus):

<TABLE>
<CAPTION>
<S>                                                       <C>                <C>                <C>
                                                                        Closing Sales Price
                                                                                               Pro Forma
                                                               SBB            Pacific         Equivalent
                                                          Common Stock     Common Stock      Per Share(1)
                                                          ------------     ------------      ------------
Market value per share:
   July 17, 1998...................................          $ 32.25         $ 49.00            $ 62.40
   November ____, 1998.............................          $______         $______            $______

- -------------
<FN>

(1)      Equivalent  market value per share of Pacific  Common Stock  represents
         the closing sales price of the SBB Common Stock on each specified date,
         multiplied by the Exchange Ratio of 1.935.
</FN>
</TABLE>

         Shareholders  are advised to obtain current  market  quotations for the
SBB Common Stock and Pacific  Common Stock.  No assurance can be given as to the
market price of the Pacific  Common Stock on the  Effective  Date, or of the SBB
Common Stock after the  Effective  Date.  As of the SBB Record Date,  there were
approximately _____ holders of record of SBB Common Stock, and as of the Pacific
Record Date, there were approximately  _____ holders of record of Pacific Common
Stock.  Upon  consummation  of the  Merger,  it is  expected  that there will be
approximately  _____  holders  of  record  of  Common  Stock  of  the  Surviving
Corporation.


                                       12

<PAGE>



                       SELECTED COMPARATIVE PER SHARE DATA
                                   (unaudited)

         The following summary presents  comparative  historical,  pro forma and
pro forma  equivalent  unaudited  per share data for both SBB and  Pacific.  The
unaudited  information  set  forth  in the  following  tables  reflects  certain
comparative per common share data related to income per share and book value per
share  (i) on a  historical  basis  for SBB  and  Pacific;  (ii) on a pro  forma
combined  basis per  share of SBB  Common  Stock  assuming  consummation  of the
Merger; and (iii) on an equivalent pro forma basis per SBB Common Stock assuming
consummation of the Merger. Per share amounts have been restated, as applicable,
to reflect all stock splits and stock  dividends  during the periods  presented.
SBB pro forma amounts represent the pro forma results of the combined companies,
and Pacific's  equivalent pro forma amounts are computed by multiplying  the pro
forma amounts by a factor of 1.935,  to reflect the Exchange Ratio (which equals
1.935 shares of SBB Common Stock for each share of Pacific Common Stock).

         The pro forma amounts assume the Merger had been  effective  during the
periods  presented  and has been  accounted for under the "pooling of interests"
method of  accounting.  For a description  of "pooling of interests"  accounting
with respect to the Merger, see "MERGER -- Accounting Treatment."

         The  information  shown below  should be read in  conjunction  with the
consolidated  historical financial statements of SBB and Pacific,  including the
respective  notes  thereto,  incorporated  by  reference  in  this  Joint  Proxy
Statement/Prospectus,  and the unaudited financial statements included elsewhere
in this Joint  Proxy  Statement/Prospectus.  See  "INFORMATION  INCORPORATED  BY
REFERENCE" and "PRO FORMA FINANCIAL  DATA." The pro forma financial  information
below  is  presented  for  comparative  purposes  only  and is  not  necessarily
indicative  of the combined  financial  position or results of  operations  that
would have been realized had the Merger been  consummated  during the periods or
as of the dates for which such pro forma financial information is presented.

<TABLE>
<CAPTION>
<S>                                                    <C>            <C>          <C>           <C>          <C>

                                                            Six Months Ended
                                                                June 30,                   Year Ended December 31,         
                                                       --------------------------- ----------------------------------------


                                                           1998          1997         1997          1996         1995     
                                                       --------------------------------------------------------------------
Net Income per Common Share:
Historical
   SBB...............................................  $   0.90       $  0.72      $  1.29       $  1.00       $  0.67
   Pacific...........................................      1.26          1.11         2.28          1.36          1.50
Pro forma combined per SBB share.....................      0.81          0.67         1.25          0.90          0.71
Equivalent pro forma per Pacific share...............      1.57          1.29         2.42          1.73          1.37

Dividends per Common Share:
Historical
   SBB...............................................  $   0.30       $  0.23      $  0.49       $  0.36       $  0.28
   Pacific...........................................      0.40          0.33         0.66          0.60          0.53
Pro forma combined per SBB share(1)..................      0.30          0.23         0.49          0.36          0.28
Equivalent pro forma per Pacific share...............      0.58          0.45         0.95          0.70          0.54

Book Value per Common Share (period end):
Historical
   SBB...............................................  $   8.31       $  7.53      $  7.75       $  7.09       $  6.58
   Pacific...........................................     17.60         16.47        16.90         15.59         15.54
Pro forma combined per SBB share.....................      8.59          7.87         8.10          7.42          7.06
Equivalent pro forma per Pacific share...............     16.61         15.22        15.67         14.36         13.65

- -----------------
<FN>

(1) SBB's pro forma dividends per share represent historical dividends per share
paid by SBB.
</FN>
</TABLE>


                                       13

<PAGE>



                      SELECTED CONSOLIDATED FINANCIAL DATA

         The following tables present selected consolidated historical financial
data for each of SBB and Pacific as of and for each of the periods indicated and
unaudited  pro forma  combined  amounts  reflecting  the  Merger.  The pro forma
amounts assume the Merger had been effective during the periods  presented.  The
data presented are derived from the consolidated financial statements of SBB and
Pacific and should be read in conjunction with the more detailed information and
financial   statements   incorporated   by   reference   in  this  Joint   Proxy
Statement/Prospectus.  Per share amounts have been restated,  as applicable,  to
reflect all stock splits and stock dividends during the periods  presented.  The
data should also be read in conjunction  with the unaudited pro forma  financial
statements  included  elsewhere in this Joint Proxy  Statement  Prospectus.  See
"INFORMATION INCORPORATED BY REFERENCE" and "PRO FORMA FINANCIAL DATA."
<TABLE>
<CAPTION>
<S>                             <C>           <C>            <C>           <C>            <C>            <C>           <C>

                                               SANTA BARBARA BANCORP
                                              SELECTED FINANCIAL DATA
                                                    (unaudited)



                                   Six Months Ended       
                                       June 30,                                     Year End December 31,
                             ----------------------------- ------------------------------------------------------------------------

                                  1998          1997      -    1997          1996      -    1995      -    1994          1993      
                             ------------------------------------------------------------------------------------------------------
                                                       (dollar amounts in thousands, except per share data)
SUMMARIZED INCOME
STATEMENT:
   Net Interest Income......    $    44,071   $    $38,037   $    71,730   $    54,529    $    48,605    $    49,933   $    46,071
   Provision for Loan Losses          6,243          6,406         6,980         4,264          9,924          6,257         6,150
   Noninterest Income.......         18,106         12,919        25,144        18,942         17,688         13,084        14,102
   Noninterest Expense......         34,184         27,842        60,105        46,589         41,969         39,291        37,336
   Income Tax Expense.......          7,693          5,572         9,653         6,953          3,985          4,518         4,377
   Cumulative Effect of
      Accounting Changes(1).             --             --            --            --             --             --           620
   Net Income...............         14,057         11,136        20,136        15,665         10,415         12,951        12,930

PER COMMON SHARE
DATA:
   Net Income...............    $      0.90   $       0.72   $      1.29   $      1.00    $      0.67    $      0.83   $      0.83
   Dividends Declared             
      Per Share.............           0.30           0.23          0.49          0.36           0.28           0.26          0.24
   Shareholders' Equity 
      (period end)..........           8.31           7.53          7.75          7.09           6.58           6.11          5.48

FINANCIAL POSITION AT
PERIOD END:
   Loans, Net of Unearned
       Income...............    $   938,299   $    788,808    $  881,548   $   684,167    $   558,801    $   499,431   $   464,230
   Total Assets.............      1,618,935     1,428,014      1,592,386     1,301,320      1,212,361      1,067,616       979,143
   Deposits.................      1,433,618     1,232,781      1,404,155     1,113,083      1,054,020        956,717       866,253
   Long-Term Debt...........         33,000        43,000         38,000        38,000             --             --            --
   Shareholders' Equity.....        127,844       114,676        118,166       107,593        100,997         93,960        85,991

SELECTED FINANCIAL
RATIOS:
   Return on Average
   Assets(2)................           1.73%         1.60%          1.40%         1.32%          0.96%          1.27%         1.34%
   Return on Average
      Common Equity(2)......          22.57%        19.83%         17.56%        14.92%         10.60%         14.33%        15.41%
   Return on Average Total
      Equity(2).............          22.57%        19.83%         17.56%        14.92%         10.60%         14.33%        15.41%
   Net Interest Margin......           5.72%         5.71%          5.22%         4.83%          4.76%          5.20%         5.13%
   Nonperforming Assets as
      % of Total Loans and
      Foreclosed Property...           1.01%         1.12%          1.12%         1.47%          1.99%          1.69%         1.60%
   Nonperforming Loans as
      % of Total Loans......           0.99%         1.12%          1.12%         1.23%          1.68%          1.52%         0.86%
   Loan Reserve as % of
      Loans.................           2.49%         2.43%          2.40%         2.42%          2.21%          2.59%         2.17%
   Net Charge-Offs as % of
      Average Loans(2)......           0.44%         0.48%          0.40%         0.01%          1.96%          0.71%         1.15%
   Earnings to Fixed Charges
      Excluding Interest
        Expense on Deposits.           3.88%         3.24%          2.98%        10.22%          7.77%         10.70%        11.75%
      Including Interest
        Expense on Deposits.           1.75%         1.64%          1.55%         1.64%          1.42%          1.68%         1.72%
   Equity to Assets.........           7.90%         8.03%          7.42%         8.27%          8.33%          8.80%         8.78%
   Tangible Equity to 
      Tangible Assets.......           6.94%         7.40%          6.41%         8.26%          8.33%          8.80%         8.78%
   Tier 1 Risk-Based Capital          10.22%        11.58%         10.00%        15.20%         16.42%         17.88%        16.59%
   Total Risk-Based Capital.          11.48%        12.84%         11.30%        16.50%         17.67%         19.14%        17.84%
- ------------------
<FN>

(1)   As of January 1, 1993, SBB recorded the cumulative effect of the change in accounting for income taxes to comply with
      Statement of Financial Accounting Standards No. 109, "Accounting for Income Taxes."

(2) Ratios for interim periods have been annualized.
</FN>
</TABLE>


                                       14

<PAGE>

<TABLE>
<CAPTION>
<S>                             <C>           <C>            <C>           <C>            <C>            <C>           <C>

                                               PACIFIC CAPITAL BANCORP
                                               SELECTED FINANCIAL DATA
                                                    (unaudited)



                                   Six Months Ended       
                                       June 30,                                     Year End December 31,
                             ----------------------------- ------------------------------------------------------------------------

                                  1998          1997      -    1997          1996      -    1995      -    1994          1993      
                             ------------------------------------------------------------------------------------------------------
                                                       (dollar amounts in thousands, except per share data)
SUMMARIZED INCOME
STATEMENT:
   Net Interest Income......    $    19,273   $    $17,030   $    35,830   $    30,639    $    27,707    $    24,956   $    21,583
   Provision for Loan Losses...         690            570         1,520           685            527            479         1,278
   Noninterest Income..........       1,844          1,604         3,356         3,160          2,983          2,871         3,031
   Noninterest Expense.........      10,998          9,924        20,884        22,727         19,352         17,345        16,445
   Income Tax Expense..........       3,774          3,217         6,635         4,348          4,200          3,778         2,426
   Cumulative Effect of 
      Account Changes (1)......          --             --            --            --             --             --           549
   Net Income..................       5,655          4,923        10,147         6,039          6,611          6,225         5,014

PER COMMON SHARE DATA:
   Net Income per Diluted Share       $1.26          $1.11         $2.28         $1.36          $1.50          $1.44         $1.15
   Dividends Declared per Share        0.40           0.33          0.66          0.60           0.53           0.40          0.30
   Shareholders' Equity (period
       end)....................       17.60          16.47         16.90         15.59          15.54          14.60         13.83

FINANCIAL POSITION AT PERIOD
END:
   Loans, Net of Unearned Income   $438,602       $414,018      $419,293      $388,728       $300,895       $290,352      $265,903
   Total Assets................     815,560        680,011       764,719       619,439        530,852        487,749       436,958
   Deposits....................     730,325        607,594       683,398       547,182        465,508        427,870       382,475
   Long-Term Debt..............          --             --            --            --             --             --            --
   Shareholders' Equity........      76,064         67,412        72,558        63,646         60,533         55,002        50,039

SELECTED FINANCIAL RATIOS:
   Return on Average Assets(2).       1.46%          1.55%         1.50%         1.06%          1.33%          1.35%         1.16%
   Return on Average Common
       Equity(2)...............      15.04%         14.98%        14.84%         9.57%         11.36%         11.81%        10.40%
   Return on Average Total
       Equity(2)...............      15.04%         14.98%        14.84%         9.57%         11.36%         11.81%        10.40%
   Net Interest Margin.........       5.50%          6.00%         5.80%         6.10%          6.30%          6.10%         5.59%
   Nonperforming Assets as % of
       Total Loans and
       Foreclosed Property.....       0.49%          0.80%         0.81%         0.91%          1.97%          2.19%         2.05%
   Nonperforming Loans as % of
      Total Loans (net of
      unearned income).........       0.22%          0.44%         0.57%         0.48%          1.08%          1.43%         1.13%
   Loan Reserve as % of
      Loans....................       1.04%          0.98%         1.02%         0.94%          1.23%          1.30%         1.41%
   Net Charge-Offs as % of
      Average Loans(2).........       0.19%          0.05%         0.23%         0.22%          0.20%          0.17%         0.39%
   Earnings to Fixed Charges
      Excluding Interest Expense
      on Deposits..............      21.68%         19.54%        20.11%        14.05%         16.53%         12.81%         9.73%
      Including Interest Expense
         on Deposits...........       1.89%          1.97%         2.47%         1.74%          1.93%          2.13%         1.82%
   Equity to Assets............       9.33%          9.91%         9.49%        10.27%         11.40%         11.28%        11.45%
   Tangible Equity to Tangible
      Assets...................       9.08%          9.87%         9.21%        10.23%         11.34%         11.28%        11.45%
   Tier 1 Risk-Based Capital...      13.35%         13.89%        13.58%        13.91%         16.63%         16.40%        16.52%
   Total Risk-Based Capital....      14.18%         14.73%        14.43%        14.71%         17.66%         17.52%        17.74%

- ----------------
<FN>

(1)   As of January 1,  1993,  Pacific  recorded  the  cumulative  effect of the
      change  in  accounting  for  income  taxes to  comply  with  Statement  of
      Financial Accounting Standards No. 109, "Accounting for Income Taxes."

(2) Ratios for interim periods have been annualized.
</FN>
</TABLE>


                                       15

<PAGE>
<TABLE>
<CAPTION>
<S>                             <C>           <C>            <C>           <C>            <C>            <C>           <C>
                                     SANTA BARBARA BANCORP AND PACIFIC CAPITAL BANCORP

                                        PRO FORMA COMBINED SELECTED FINANCIAL DATA
                                                        (unaudited)

                                   Six Months Ended       
                                       June 30,                                     Year End December 31,
                             ----------------------------- ------------------------------------------------------------------------

                                   1998              1997          1997          1996        1995          1994          1993      
                             ------------------------------------------------------------------------------------------------------
                                                       (dollar amounts in thousands, except per share data)
SUMMARIZED INCOME
STATEMENT:
   Net Interest Income......    $    63,344   $     55,067   $   107,560   $    85,168    $    76,312    $    74,889   $    67,654
   Provision for Loan Losses          6,933          6,976         8,500         4,949         10,451          6,736         7,428
   Noninterest Income.......         19,950         14,523        28,500        22,102         20,671         15,955        17,133
   Noninterest Expense......         45,182         37,766        80,989        69,316         61,321         56,636        53,781
   Income Tax Expense.......         11,467          8,789        16,288        11,301          8,185          8,296         6,803
   Cumulative Effect of
      Accounting Changes(1).             --             --            --            --             --             --         1,169
   Net Income...............         19,712         16,059        30,283        21,704         17,026         19,176        17,944

PER COMMON SHARE DATA:
   Net Income per Diluted
      Share.................          $0.81          $0.67         $1.25         $0.90          $0.71          $0.82         $0.74
   Dividends Declared(2)....           0.30           0.23          0.49          0.36           0.28           0.26          0.24
   Shareholders' Equity
       (period end).........           8.59           7.87          8.10          7.42           7.06           6.57          6.13

FINANCIAL POSITION AT
PERIOD END:
   Loans, Net of Unearned
       Income...............    $ 1,376,901   $  1,202,826   $ 1,300,841   $ 1,072,895    $   859,696    $   789,783   $   730,133
   Total Assets.............      2,434,495      2,108,025     2,357,105     1,920,759      1,743,213      1,555,365     1,416,101
   Deposits.................      2,163,943      1,840,375     2,087,553     1,660,265      1,519,528      1,385,587     1,248,728
   Long-Term Debt...........         33,000         43,000        38,000        38,000             --             --            --
   Shareholders' Equity.....        203,908        182,088       190,724       171,239        161,530        148,962       136,030

SELECTED FINANCIAL RATIOS:
   Return on Average Assets(3)        1.64%          1.59%         1.43%         1.23%          1.08%          1.30%         1.29%
   Return on Average Common
      Equity(3).............         19.74%         18.04%        16.55%        12.91%         10.88%         13.40%        13.59%
   Return on Average Total
      Equity(3).............         19.74%         18.04%        16.55%        12.91%         10.88%         13.40%        13.59%
   Net Interest Margin......          5.63%          5.78%         5.41%         5.21%          5.23%          5.45%         5.27%
   Nonperforming Assets as %
      of Total Loans and
      Foreclosed Property...          0.84%          1.01%         1.02%         1.27%          1.98%          1.88%         1.76%
   Nonperforming Loans as %
      of Total Loans........          0.74%          0.89%         0.93%         0.96%          1.46%          1.49%         0.96%
   Loan Reserve as % of  
      Loans.................          2.02%          1.93%         1.95%         1.89%          1.87%          2.11%         1.89%
   Net Charge-Offs as % of
      Loans(3)..............          0.66%          0.66%         0.34%         0.08%          1.34%          0.51%         0.88%
   Earnings to Fixed Charges
      Excluding Interest
         Expense on Deposits          4.89%          4.15%         3.92%        11.16%          9.93%         11.37%        11.07%
   Including Interest Expense
         on Deposits........          1.79%          1.72%         1.64%         1.67%          1.55%          1.79%         1.75%
   Equity to Assets.........          8.38%          8.64%         8.09%         8.92%          9.27%          9.58%         9.61%
   Tangible Equity to Tangible
      Assets................          7.66%          8.20%         7.32%         8.89%          9.25%          9.58%         9.61%
   Tier 1 Risk-Based Capital         11.27%         12.38%        11.23%        14.70%         16.49%         17.31%        16.56%
   Total Risk-Based Capital.         12.39%         13.50%        12.35%        15.78%         17.67%         18.52%        17.80%

- ----------------
<FN>
(1)  Includes cumulative effect of FAS No. 109 adoption in 1993.

(2)  Pro forma dividends per share represent historical dividends per share paid
     by SBB.

(3) Ratios for interim periods have been annualized.
</FN>
</TABLE>
                                       16
<PAGE>



                                  RISK FACTORS

         This  Joint   Proxy   Statement/Prospectus   contains   forward-looking
statements  that involve risks and  uncertainties.  The Surviving  Corporation's
actual  results  could  differ from those  articulated  in such  forward-looking
statements as a result of a variety of factors, including those set forth in the
following  risk factors and elsewhere in this Joint Proxy  Statement/Prospectus.
The following  discussion  of certain risk factors or investment  considerations
should be carefully  considered  in  evaluating  the Merger,  in addition to the
risks and other information  described elsewhere or incorporated by reference in
this Joint Proxy Statement/Prospectus.

Prospects of the Surviving Corporation After the Merger

         Ability to Integrate the Operations of SBB and Pacific

         The  earnings,  financial  condition  and  prospects  of the  Surviving
Corporation  after  the  Merger  will  depend  in part on a number  of  factors,
including,  without limitation,  management's ability to successfully  integrate
the  operations  and  management of SBB and Pacific and to continue to implement
the community banking  philosophy shared by each  organization.  There can be no
assurance  the  management  of  the  Surviving   Corporation  will  be  able  to
effectively  and  profitably  integrate the operations and management of SBB and
Pacific. In addition,  there can be no assurance that the Surviving  Corporation
will be able to realize fully the potential  revenue  enhancement  expected as a
result of the Merger.  Further,  there can be no  assurance  that the  Surviving
Corporation  will be able to fully  realize any of the  potential  cost  savings
expected  as  a  result  of  SBB  and  Pacific  and  their  respective   banking
subsidiaries being able to share  administrative  and other resources.  See "PRO
FORMA FINANCIAL DATA." Finally,  there can be no assurance that any cost savings
which may be realized  will not be offset by losses in revenues or other charges
to earnings.

         Because  the  markets  in which  SBB and  Pacific  operate  are  highly
competitive  and because of the inherent  uncertainties  associated with merging
two companies,  there can be no assurance that the Surviving Corporation will be
able to realize fully the operating  efficiencies currently expected as a result
of the Merger and the consolidating of the administrative  operations of the two
companies or that such operating efficiencies will be realized in the time frame
currently anticipated.

         Performance of Combined Loan Portfolios

         The  performance and prospects of the Surviving  Corporation  after the
Merger also will be dependent to a significant  extent on the performance of the
loan portfolios of SBB and Pacific and ultimately on the financial  condition of
SBB's and Pacific's borrowers and other customers.  The existing loan portfolios
of SBB and Pacific  differ to some extent in the types of borrowers,  industries
and  credits   represented.   In  addition,   there  are   differences   in  the
documentation, classifications, credit ratings and management of the portfolios.
As a result,  the Surviving  Corporation's  overall loan  portfolio  will have a
different  risk profile than the loan  portfolio of either SBB or Pacific before
the Merger.  The  performance  of the combined  loan  portfolio may be adversely
affected if any one of these factors is different than currently anticipated. In
addition,  to the extent that present customers are not retained by the combined
company or additional  expenses are incurred in retaining  them,  there could be
adverse  effects on future  results of operations  of the Surviving  Corporation
following the Merger.

Market Trading and Liquidity; Possible Volatility of Prices

         SBB Common Stock  and Pacific  Common  Stock are  each  designated  for
quotation  on Nasdaq  (as will the  shares  of Common  Stock to be issued in the
Merger)  and  there  is a  trading  market  for  such  shares.  There  can be no
assurance,  however, that an active trading market for shares of common stock of
the Surviving  Corporation will continue after the Merger,  or that shareholders
of the  Surviving  Corporation  will be  able  to  resell  their  securities  or
otherwise  liquidate their investment without delay, if at all, or impact on the
sales price.

         There  can be no  assurance  as to the  market  value of the  shares of
common stock of the Surviving  Corporation after the Merger,  which value may be
affected  by such  factors as  quarter-to-quarter  variations  in the  Surviving
Corporation's  results of operations,  news  announcements or changes in general
market or industry conditions. In addition, the Surviving Corporation may pursue
acquisitions  of  other  financial  institutions  from  time to time  when  such
acquisitions  are believed by the Surviving  Corporation to enhance  shareholder
value or satisfy other  strategic objectives.  Such acquisitions,  if any, could


                                       17

<PAGE>



be  accomplished  by the  issuance of  additional  shares of common stock of the
Surviving  Corporation or other  securities  convertible into or exercisable for
such shares, which may have a dilutive effect.

Credit Risk

         A significant source of risk for financial institutions such as SBB and
Pacific  arises  from the  possibility  that losses  will be  sustained  because
borrowers, guarantors and related parties may fail to perform in accordance with
the terms of their loans.  SBB and Pacific have adopted  underwriting and credit
monitoring  procedures  and credit  policies,  including the  establishment  and
review of the  allowance  for  credit  losses,  that each  company's  respective
management  believes are  appropriate  to minimize  this risk by  assessing  the
likelihood of  nonperformance,  tracking loan  performance and  diversifying the
respective  credit  portfolios.  There can be no  assurance  that actual  losses
incurred  will not  exceed the amount of the  allowance  or require  substantial
additional provisions to the allowance.  Such policies and procedures,  however,
may not prevent  unexpected  losses that could  materially  adversely affect the
respective companies' results of operations.

Interest Rate Risk

         It  is   expected   that  the   Surviving   Corporation,   through  its
subsidiaries, will continue to realize income primarily from the differential or
"spread"   between  the  interest   earned  on  loans,   securities   and  other
interest-earning  assets,  and interest paid on deposits,  borrowings  and other
interest-bearing   liabilities.   Net  interest  spreads  are  affected  by  the
difference   between   the   maturities   and   repricing   characteristics   of
interest-earning  assets and  interest-bearing  liabilities.  In addition,  loan
volume and yields are  affected by market  interest  rates on loans,  and rising
interest  rates   generally  are   associated   with  a  lower  volume  of  loan
originations.  There  can  be no  assurance  that  the  Surviving  Corporation's
interest rate risk will be minimized or eliminated.  In addition, an increase in
the general level of interest rates may adversely  affect the ability of certain
borrowers  to  pay  the  interest  on,  and  principal  of,  their  obligations.
Accordingly,  changes  in levels  of  market  interest  rates  could  materially
adversely affect the Surviving Corporation's net interest spread, asset quality,
loan origination volume and overall results of operation.

Impact of Year 2000

         The  "Year  2000"  issue  refers  to the  phenomenon  whereby  computer
programs,  having been written  using two digits  rather than four to define the
applicable  year, may  erroneously  recognize a date using "00" as the year 1900
rather  than the year 2000.  This  error  could  potentially  result in a system
failure or miscalculations causing disruptions of operations,  including,  among
other things, a temporary inability to process transactions or engage in similar
normal business activities.

         As part of its Year 2000  compliance  program,  SBB has  reviewed  and,
where  appropriate,  updated  its  mission  critical  systems  to  mitigate  the
possibility  of  system  interruption  or  failure  as a result of the Year 2000
issue. To a degree, SBB relies on outside software vendors and suppliers for the
operation of its computer systems. SBB has initiated formal  communications with
these parties to determine  the extent to which SBB's systems are  vulnerable to
those third parties' failure to remedy their own Year 2000 issues. While SBB has
taken  action  to  identify  and  correct  known  deficiencies  in its  computer
operating systems,  if necessary  modifications and conversions are not made, or
are not completed  timely,  the Year 2000 issue could have a material  impact on
the operations of SBB.

Competition

         The banking and financial  services  business in California  generally,
and in SBB's and Pacific's market areas specifically, is highly competitive with
respect to both loans and deposits. The increasingly  competitive environment is
a result  primarily of changes in regulation,  changes in technology and product
delivery  systems and the  accelerating  pace of  consolidation  among financial
services  providers.  SBB and Pacific presently compete for loans,  deposits and
customers for financial  services with other commercial banks,  savings and loan
associations,  securities and brokerage companies, mortgage companies, insurance
companies,  finance  companies,  money  market  funds,  credit  unions and other
non-bank financial service providers.  Many of these competitors are much larger
in total assets and  capitalization,  have greater access to capital markets and
offer a broader array of financial services than SBB or Pacific. There can be no
assurance that the Surviving  Corporation will be able to compete effectively in
the market currently served by SBB and Pacific, and the results of operations of
the Surviving Corporation could be adversely affected if circumstances affecting
the nature or level of competition change.


                                       18

<PAGE>



Government Regulation and Monetary Policy

         The  banking  industry  is  subject  to  extensive  federal  and  state
supervision  and  regulation.  Such  regulation  limits the manner in which SBB,
Pacific and their  respective  banking  subsidiaries  conduct their  businesses,
undertake new investments and activities and obtain  financing.  This regulation
is designed  primarily  for the  protection of the deposit  insurance  funds and
consumers,  and not for benefit the  holders of SBB's or  Pacific's  securities.
Financial institution regulation has been the subject of significant legislation
in recent years,  and may be the subject of further  significant  legislation in
the future,  none of which is in the control of SBB or Pacific.  Significant new
laws or changes in, or repeals of,  existing  laws may cause SBB's or  Pacific's
results to differ materially.  Further, federal monetary policy, particularly as
implemented  through the Federal  Reserve System,  significantly  affects credit
conditions for financial institutions,  primarily through open market operations
in United States  government  securities,  the discount rate for bank borrowings
and bank reserve requirements.  Any material change in these conditions would be
likely to have a material  impact on SBB's and Pacific's  respective  results of
operations.

Common Stock Dividends

         Each of SBB and Pacific  currently  declare  and pay regular  quarterly
dividends  with  respect  to the SBB  Common  Stock and  Pacific  Common  Stock,
respectively. Declarations or payments of dividends by the Board of Directors of
the  Surviving  Corporation  in the future will depend upon a number of factors,
including   capital   requirements,   regulatory   limitations,   the  Surviving
Corporation's financial condition and results of operations and general economic
conditions. No assurance can be given that any dividends will be declared or, if
declared,  what the amount of dividends will be or whether such dividends,  once
declared, will continue.

Economic Conditions and Geographic Concentration

         The operations of SBB and Pacific are located in Central California and
concentrated  primarily in Monterey,  Santa Barbara, Santa Clara, San Benito and
Ventura  Counties.  As a result  of this  geographic  concentration,  SBB's  and
Pacific's  results depend largely upon economic  conditions in these areas.  Any
deterioration in economic conditions in these market areas could have a material
adverse impact on the quality of the Surviving  Corporation's loan portfolio and
the demand for its  products  and  services  and,  accordingly,  its  results of
operations. See "INFORMATION ABOUT THE PARTIES -- SBB", and "-- Pacific."


                                 THE SBB MEETING

Date, Time and Place

         This  Joint   Proxy   Statement/Prospectus   is  being   furnished   to
shareholders  of SBB in connection  with the  solicitation of proxies by the SBB
Board  for  use at the  SBB  Meeting,  and at any  adjournment  or  postponement
thereof.  The SBB  Meeting  will be held at the  Lobero  Theater,  33 East Canon
Perdido,  Santa  Barbara,  California,  at 2:00 p.m.,  local  time,  on Tuesday,
December 15, 1998.

         The date on which this Joint Proxy  Statement/Prospectus is first being
sent to shareholders of SBB is November ___, 1998.

Matters to be Considered

         The SBB Meeting will be held for the purpose of considering  and voting
upon a proposal to approve and adopt the Reorganization Agreement and the Merger
Agreement  and  the  consummation  of  the  transactions  contemplated  thereby,
including the Merger and amending the Articles of Incorporation of SBB to change
the  name  of the  Surviving  Corporation  to  "Pacific  Capital  Bancorp"  upon
consummation of the Merger (the "Name Change"). See "THE MERGER."

         Shareholders  of SBB will also be asked to  consider  and vote upon two
additional  proposals:  (a) to  consider  and vote upon a proposal to approve an
amendment  to the Bylaws of SBB to  increase  the range of the number of persons
who may serve as directors  of SBB from a maximum of thirteen  (13) persons to a
maximum of seventeen (17) persons (defined herein as the "Bylaw Amendment"); and
(b) to consider and vote upon a proposal to approve an amendment to the Articles
of  Incorporation  of SBB to  eliminate  cumulative  voting with  respect to the
election of directors  (defined herein as  the "Article Amendment").  Additional


                                       19

<PAGE>



information  with  respect  to  each of the  Bylaw  Amendment  and  the  Article
Amendment is provided below.

         Management  of SBB knows of no  matters  to be  brought  before the SBB
Meeting  other  than  those  referred  to above.  If any other  business  should
properly  come before the SBB Meeting,  the persons named in the proxy will vote
in accordance with their best judgment.

         The Bylaw Amendment

         At the SBB  Meeting,  holders  of SBB  Common  Stock  will be  asked to
consider  and act upon a proposal to amend SBB's Bylaws to increase the range of
the size of the SBB Board from a minimum of seven (7) and a maximum of  thirteen
(13) to a minimum of nine (9) and a maximum of  seventeen  (17),  with the exact
number of  directors  within the  foregoing  range to be  determined  by the SBB
Board.  Following  the  adoption  of the Bylaw  Amendment,  the exact  number of
Directors will be established at fifteen (15). See "THE  MERGER--Management  and
Operations After the Merger." As is the practice under current provisions of the
Bylaws of SBB, the SBB Board will continue to have the ability to vary the exact
number of Directors  within the foregoing range without  additional  shareholder
approval.

         Reason for the Bylaw Amendment. The Bylaw Amendment will permit the SBB
Board to increase the size of the SBB Board (currently  comprised of 11 persons)
to  accommodate  the four (4)  director  representatives  of Pacific who will be
appointed to the Board of Directors upon consummation of the Merger.  Currently,
the Bylaws of SBB provide that the maximum  number of  directors  who may sit on
the SBB Board is thirteen (13) persons.  Thus,  under the current  provisions of
the SBB Bylaws,  the  eleven-person  SBB Board may be  increased by only two (2)
additional  persons  before the maximum  range is achieved.  Accordingly,  it is
necessary to increase the range of the size of the SBB Board to accommodate  the
appointment  of at least four  additional  directors  upon  consummation  of the
Merger.

         It is important to note that it is a condition to  consummation  of the
Merger that the Bylaw  Amendment be approved by the  shareholders  of SBB at the
SBB Meeting in order that the four (4) director  representatives  of Pacific may
be  appointed  to the  Board of  Directors  of the  Surviving  Corporation  upon
consummation of the Merger. Accordingly, if the Bylaw Amendment is not approved,
Pacific would not be obligated to  consummate  the Merger under the terms of the
Reorganization Agreement.

         Text of the Proposed Bylaw Amendment. The Bylaws of SBB are proposed to
be amended by restating Section 3.2.1 thereof to read as follows:

         "Authorized  Number.  The number of directors  who may be authorized to
serve on the Board of  Directors of the  Corporation  shall be no less than nine
(9) nor more than seventeen (17).  Until a different number within the foregoing
limits is specified  in an  amendment to this Section  3.2.1 duly adopted by the
Board of Directors or the shareholders, the exact number of authorized directors
shall be fifteen (15)."

         The Article Amendment

         At the SBB  Meeting,  holders  of SBB  Common  Stock  will be  asked to
consider and vote upon a proposal to amend the Articles of  Incorporation of SBB
to eliminate  the ability of  shareholders  to cumulate  votes in elections  for
directors. Shareholders of SBB are presently entitled to cumulate their votes in
elections for directors. With cumulative voting, each shareholder is entitled to
cast a number of votes equal to the number of directors to be elected multiplied
by the number of shares held in the shareholder's  name on the record date. This
total number of votes may be cast for one nominee or may be distributed among as
many candidates as the shareholder  desires. The candidates (up to the number of
directors to be elected) receiving the highest number of votes are elected.

         The GCL permits a California corporation that is a "listed corporation"
(i.e.,   one  whose  shares  are  listed  on  Nasdaq  (and  have  at  least  800
shareholders)  or the New York Stock Exchange or the American Stock Exchange) to
amend its articles of incorporation  and bylaws to eliminate  cumulative  voting
for the election of directors.  The  legislation  containing  this provision was
sponsored by the Business Law Section of the State Bar of California  and became
effective on January 1, 1990.  Prior to the  legislation,  cumulative  voting in
electing directors was mandatory for California  corporations upon proper notice
by any shareholder.  By permitting  shareholders of California corporations with
widely  traded  securities  to  eliminate  cumulative  voting  and  provide  for


                                       20

<PAGE>



conventional  voting  in  electing  directors,  the GCL  substantially  conforms
California  corporate law with the corporate  laws of a majority of other states
(including Delaware,  Illinois,  Michigan, Missouri, New Jersey, New York, Ohio,
Pennsylvania and Texas), which either provide that cumulative voting is optional
or make no provisions  for  cumulative  voting at all. Only a small  minority of
states still require that shareholders be permitted to invoke cumulative voting.

         Because  SBB Common  Stock is quoted on Nasdaq and  because  SBB has at
least 800  shareholders  of record,  SBB  qualifies  as a "listed  corporation."
Accordingly,  with the  approval of the  shareholders  of SBB,  the  Articles of
Incorporation  of SBB may be amended to eliminate the ability to cumulate  votes
in the election of directors.

         For the reasons discussed below, the SBB Board believes that cumulative
voting  is  not  an  appropriate   method  of  corporate   governance  for  SBB.
Accordingly,  the SBB  Board  has  adopted  and is  submitting  for  shareholder
approval an amendment to SBB's Articles of Incorporation  (defined herein as the
"Article  Amendment"),  which, if approved by the shareholders,  would eliminate
cumulative  voting  upon  filing  with  the  California  Secretary  of  State an
amendment  to the  Articles of  Incorporation  of SBB to include the text of the
Article  Amendment as set forth herein.  If the Article Amendment is approved by
shareholders of SBB at the SBB Meeting,  the directors of SBB will be elected by
conventional  voting  commencing with the next Annual Meeting of Shareholders of
SBB.

         A description of cumulative  and  conventional  voting  together with a
summary of the reasons for the Board's  recommendation  of the proposed  Article
Amendment  and certain  other  considerations  concerning  the proposed  Article
Amendment  are set forth below.  In addition,  the text of the proposed  Article
Amendment is set forth below.

         Cumulative  Voting and Conventional  Voting.  Cumulative  voting in the
election  of  directors  may  currently  be  invoked by any  shareholder  of SBB
complying with statutory notice requirements.  Under cumulative voting,  holders
of shares of SBB Common  Stock are entitled to a number of votes per share equal
to the  number of  directors  to be  elected  and all  directors  are voted upon
simultaneously.  Holders  of  shares  may cast all of their  votes  for a single
director candidate or distribute them among two or more director candidates.

         As a consequence  of cumulative  voting,  shareholders  representing  a
relatively  small number of the voting shares may have the power to nominate and
elect one or more directors.  For example, if fifteen (15) directors (the number
of  directors  who will  comprise  the SBB Board  assuming  consummation  of the
Merger) are to be elected at an annual meeting of shareholders, a shareholder or
group of  shareholders  holding less than 7% of the voting shares could nominate
and elect one director by  cumulating  and casting their fifteen votes per share
only for their single  candidate.  This is so even if shareholders  holding over
93% of the voting shares are opposed to the election of that  candidate and cast
their vote to elect fifteen other director candidates.

         With conventional voting, however, a director nominee cannot be elected
without  relatively wide  shareholder  support,  as shareholders are entitled to
cast only one vote per  share for any  director  candidate.  Consequently,  with
conventional voting, the only director candidates who could be elected are those
who receive  support from  shareholders  holding the  greatest  number of voting
shares and shareholders holding a majority of the voting shares would be able to
elect all of the directors.

         Reasons for the Proposed Article Amendment. The SBB Board believes that
approval of the proposed  Article  Amendment is in the best interests of SBB and
its shareholders.  It believes that conventional voting in electing directors is
desirable  because  it  assures  that the only  persons  who will be  elected as
directors  of SBB are  those  who are  supported  by  shareholders  holding  the
greatest number of voting shares.  The SBB Board believes that every director of
a publicly-held  corporation  should represent the interests of all shareholders
rather than any specific shareholder or group of shareholders.  It believes that
directors  elected by a minority  shareholder or group of  shareholders  through
cumulative  voting are likely to be partisans of the  particular  interest group
who elected them rather than representatives of a majority of shareholders. Such
partisanship  could disrupt the  management of SBB and prevent it from operating
in the most  effective  manner.  Further,  the  election of  directors  who view
themselves as representing or answerable to a particular  minority  constituency
could  introduce  an element of  discord on the board of  directors,  impair the
ability  of  the  directors  to  work   effectively  and  discourage   qualified
independent individuals from serving as directors. By providing for conventional
voting in electing  directors,  approval of the proposed Article  Amendment will
help ensure that each director acts in the best  interests of all  shareholders.
Approval of the proposed  amendment should also discourage  election contests by
individuals  who are  likely  to  receive  support  only from the  holders  of a
relatively small number of voting shares and, as a result,  reduce the attendant
costs of annual meetings.


                                       21

<PAGE>



         Other Effects. The SBB Board believes the proposed Article Amendment is
in the best  interests  of  shareholders  and should be  approved.  Shareholders
should, however,  carefully consider certain effects of the proposal in deciding
whether or not to approve the proposed Article Amendment.

         Approval of the Article Amendment may render more difficult any attempt
by a holder or group of holders of a significant  number of voting  shares,  but
less than a majority,  to change or influence the management or policies of SBB.
In addition, under certain circumstances,  the proposed Article Amendment, along
with other  measures  that may be viewed as having  anti-takeover  effects,  may
discourage an unfriendly  acquisition or business combination involving SBB that
a  shareholder  might  consider  to  be in  such  shareholder's  best  interest,
including an unfriendly acquisition or business combination that might result in
a premium  over the market  price for the shares  held by the  shareholder.  For
example, the proposed Article Amendment may discourage the accumulation of large
minority  shareholdings  (as a prelude to an unfriendly  acquisition or business
combination  proposal  or  otherwise)  by  persons  who  would not  effect  that
acquisition without being assured of representation on the board of directors.

         Nevertheless,   the  SBB  Board  believes  that  the  proposed  Article
Amendment and  subsequent  election of directors by at least a majority of votes
cast  non-cumulatively by shareholders will best enable the SBB Board to act for
the benefit of SBB and all of its shareholders.

         It is important to note that the proposed  Article  Amendment is not in
response to any attempt to acquire  control of SBB, nor is SBB aware of any such
attempt.  In addition,  it is important to note that, unlike with respect to the
Bylaw  Amendment,  approval  of the  Article  Amendment  is not a  condition  to
consummation of the Merger.

         Text of Proposed  Article  Amendment.  The Articles of Incorporation of
SBB are proposed to be amended by adding  thereto a new Article  Seventh,  which
shall read as set forth below:

                  "SEVENTH.  ELIMINATION OF CUMULATIVE VOTING.

                  No holder of any  class of stock of the  Corporation  shall be
                  entitled to cumulate votes at any election of directors of the
                  Corporation."

Record Date

         The SBB Board has fixed the close of business on ____________,  1998 as
the SBB Record Date. Only the holders of record of the outstanding shares of SBB
Common  Stock on the SBB Record  Date will be entitled to notice of, and to vote
at the SBB Meeting.  On the SBB Record Date there were ___________ shares of SBB
Common Stock issued and outstanding and entitled to vote at the SBB Meeting.  No
shares of SBB  Common  Stock can be voted at the SBB  Meeting  unless the record
holder is present in person or represented by proxy at the SBB Meeting.

Quorum, Voting and Revocation of Proxies

         Proxies  for  use  at  the  SBB  Meeting  accompany  this  Joint  Proxy
Statement/Prospectus.  A  shareholder  may use his or her  proxy if he or she is
unable to attend  the SBB  Meeting  in person or wishes to have his or her share
voted by proxy  even if he or she does  attend  the SBB  Meeting.  Shares of SBB
Common Stock  represented by a proxy properly  signed and returned to SBB at, or
prior to, the SBB Meeting, unless subsequently revoked, will be voted at the SBB
Meeting in  accordance  with the  instructions  thereon.  If a proxy is properly
signed and returned and the manner of voting is not indicated on the proxy,  any
shares of SBB  Common  Stock  represented  by such  proxy  will be voted FOR the
matters  to be  considered  at the SBB  Meeting.  The grant of a proxy will also
confer  discretionary  authority  on the  persons  named in the proxy to vote on
matters incident to the conduct of the SBB Meeting, including any adjournment or
postponement thereof; provided,  however, that no proxy which is voted "against"
the  proposal to approve and adopt the Merger will be voted in favor of any such
adjournment or postponement.

         The  presence,  in person or by proxy,  of a majority of the issued and
outstanding  shares of SBB Common Stock  entitled to vote on the SBB Record Date
is  necessary to  constitute  a quorum at the SBB Meeting.  SBB intends to count
shares of SBB Common Stock  present in person at the SBB Meeting but not voting,
and  shares  of SBB  Common  Stock for which it has  received  proxies  but with
respect to which holders of shares have  abstained or which  constitute  "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


                                       22

<PAGE>



the shares at the  meeting),  as  present at the SBB  Meeting  for  purposes  of
determining the presence or absence of a quorum for the transaction of business.

         Each share of SBB Common  Stock is  entitled to one vote on each matter
to be voted upon at the SBB Meeting.  Since the affirmative  vote of the holders
of a majority  of the  outstanding  shares of SBB Common  Stock is  required  to
approve the matters to be considered at the SBB Meeting,  non-voting  shares and
abstentions will have the effect of a vote "against" such matters.  In addition,
brokers who hold shares of SBB Common Stock in street name for customers who are
the beneficial  owners of such shares are prohibited from giving a proxy to vote
shares held for such  customers with respect to the matters to be considered and
voted upon at the SBB Meeting without specific  instructions from such customers
(so-called  "broker  non-votes").  The  failure  of such  customers  to  provide
specific  instructions with respect to their shares of SBB Common Stock to their
broker will have the effect of a vote "against" such matters.

         If a quorum is not obtained at the SBB Meeting,  or fewer shares of SBB
Common Stock are voted in favor of the Agreements and the Merger than the number
required for approval of the Agreements and the Merger,  it is expected that the
SBB  Meeting  will be  postponed  or  adjourned  for  the  purpose  of  allowing
additional time for obtaining additional proxies or votes, and at any subsequent
reconvening of the SBB Meeting,  all proxies will be voted in the same manner as
such proxies would have been voted at the original  convening of the SBB Meeting
(except for any  proxies  which have  theretofore  effectively  been  revoked or
withdrawn).

         Any proxy  given  pursuant to this  solicitation  may be revoked by the
grantor at any time prior to the voting  thereof on the matters to be considered
at the SBB Meeting by filing with the Secretary of SBB a written revocation or a
duly executed proxy bearing a later date. All written  notices of revocation and
other  communications  with  respect  to  revocation  of SBB  proxies  should be
addressed  to  Santa  Barbara  Bancorp,  1021  Anacapa  Street,  Santa  Barbara,
California 93101,  Attention:  Corporate Secretary. A holder of SBB Common Stock
who  previously  signed  and  returned  a proxy and who elects to attend the SBB
Meeting and vote in person may  withdraw  his or her proxy at any time before it
is exercised by giving notice of such  revocation to the Secretary of SBB at the
SBB  Meeting  and  voting  in person  by  ballot  at the SBB  Meeting;  however,
attendance at the SBB Meeting will not in and of itself  constitute a revocation
of the proxy. In addition, shareholders whose shares of SBB Common Stock are not
registered in their own name will need additional  documentation from the record
holder of such shares to vote personally at the SBB Meeting.

Vote Required to Approve the Merger

         The affirmative  vote of the holders of a majority of the shares of SBB
Common Stock outstanding and entitled to vote at the SBB Meeting is necessary to
approve and adopt the Reorganization  Agreement and the Merger Agreement and the
transactions  contemplated  thereby,  including  the Merger and the Name Change.
Approval of the  Reorganization  Agreement  by holders of SBB Common  Stock is a
condition to consummation of the Merger.

         THE SBB BOARD  HAS UNANIMOUSLY APPROVED  THE AGREEMENTS AND  THE MERGER
AND RECOMMENDS THAT SHAREHOLDERS OF  SBB VOTE "FOR" APPROVAL AND ADOPTION OF THE
AGREEMENTS AND THE TRANSACTIONS CONTEMPLATED THEREBY.

Vote Required to Approve the Bylaw Amendment

         In  accordance  with the  Bylaws of SBB,  the  affirmative  vote of the
holders of a majority of the shares of SBB Common Stock outstanding and entitled
to vote at the SBB Meeting is necessary to approve the Bylaw Amendment. Approval
of the  Bylaw  Amendment  by  holders  of SBB  Common  Stock is a  condition  to
consummation of the Merger.

         THE  SBB  BOARD  HAS  UNANIMOUSLY  APPROVED  THE  BYLAW  AMENDMENT  AND
RECOMMENDS THAT SHAREHOLDERS  OF SBB VOTE  "FOR" APPROVAL  AND  ADOPTION OF  THE
BYLAW AMENDMENT.

Vote Required to Approve the Article Amendment

         The affirmative  vote of the holders of a majority of the shares of SBB
Common Stock outstanding and entitled to vote at the SBB Meeting is necessary to
approve the Article  Amendment.  Approval of the Article Amendment by holders of
SBB Common Stock is not a condition to consummation of the Merger.



                                       23

<PAGE>



         THE SBB BOARD HAS APPROVED THE ARTICLE  AMENDMENT AND  RECOMMENDS  THAT
SHAREHOLDERS OF SBB VOTE "FOR" APPROVAL AND ADOPTION OF THE ARTICLE AMENDMENT.


                               THE PACIFIC MEETING

Date, Time and Place

         This  Joint   Proxy   Statement/Prospectus   is  being   furnished   to
shareholders  of Pacific in connection  with the  solicitation of proxies by the
Pacific  Board  for  use at the  Pacific  Meeting,  and  at any  adjournment  or
postponement  thereof.  The  Pacific  Meeting  will be held at  Corral de Tierra
Country Club, 81 Corral de Tierra Road, Salinas,  California,  at ________ p.m.,
local time, on _____________, December ___, 1998.

         The date on which this Joint Proxy  Statement/Prospectus is first being
sent to shareholders of Pacific is November ___, 1998.

Matters to be Considered

         The Pacific  Meeting  will be held for the purpose of  considering  and
voting upon a proposal to approve and adopt the Reorganization Agreement and the
Merger Agreement and the consummation of the transactions  contemplated thereby,
including the Merger.

         Management  of Pacific  knows of no  matters  to be brought  before the
Pacific  Meeting  other than those  referred  to herein.  If any other  business
should properly come before the Pacific Meeting,  the persons named in the proxy
will vote in accordance with their best judgment.

Record Date

         The Pacific Board has fixed the close of business on ____________, 1998
as the Pacific Record Date. Only the holders of record of the outstanding shares
of Pacific  Common  Stock on the Pacific  Record Date will be entitled to notice
of, and to vote at the Pacific  Meeting.  On the Pacific  Record Date there were
___________  shares of Pacific Common Stock issued and  outstanding and entitled
to vote at the Pacific  Meeting.  No shares of Pacific Common Stock can be voted
at the  Pacific  Meeting  unless  the  record  holder  is  present  in person or
represented by proxy at the Pacific Meeting.

Quorum, Voting and Revocation of Proxies

         Proxies  for use at the  Pacific  Meeting  accompany  this Joint  Proxy
Statement/Prospectus.  A  shareholder  may use his or her  proxy if he or she is
unable  to attend  the  Pacific  Meeting  in person or wishes to have his or her
shares voted by proxy even if he or she does attend the Pacific Meeting.  Shares
of Pacific Common Stock  represented by a proxy properly  signed and returned to
Pacific at, or prior to, the Pacific Meeting,  unless subsequently revoked, will
be voted at the Pacific Meeting in accordance with the instructions  thereon. If
a proxy is  properly  signed  and  returned  and the  manner  of  voting  is not
indicated on the proxy,  any shares of Pacific Common Stock  represented by such
proxy will be voted FOR the  approval  and  adoption of the  Agreements  and the
transactions  contemplated  thereby.  The  grant  of a proxy  will  also  confer
discretionary  authority  on the  persons  named in the proxy to vote on matters
incident  to the  conduct  of the SBB  Meeting,  including  any  adjournment  or
postponement thereof; provided,  however, that no proxy which is voted "against"
the  proposal to approve and adopt the Merger will be voted in favor of any such
adjournment or postponement.

         The  presence,  in person or by proxy,  of a majority of the issued and
outstanding  shares of Pacific  Common  Stock  entitled  to vote on the  Pacific
Record Date is necessary to constitute a quorum at the Pacific Meeting.  Pacific
intends to count shares of Pacific Common Stock present in person at the Pacific
Meeting  but not  voting,  and shares of Pacific  Common  Stock for which it has
received  proxies but with respect to which holders of shares have  abstained or
which constitute "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),  as present at the Pacific Meeting
for  purposes  of  determining  the  presence  or  absence  of a quorum  for the
transaction of business.



                                       24

<PAGE>



         Each  share of Pacific  Common  Stock is  entitled  to one vote on each
matter to be voted upon at the Pacific Meeting.  Since the affirmative vote of a
majority  of the  outstanding  shares of Pacific  Common  Stock is  required  to
approve the Merger,  non-voting shares and abstentions will have the effect of a
vote  "against"  such matters.  In addition,  brokers who hold shares of Pacific
Common Stock in street name for customers who are the beneficial  owners of such
shares are prohibited from giving a proxy to vote shares held for such customers
with  respect to the  matters  to be  considered  and voted upon at the  Pacific
Meeting  without  specific  instructions  from such customers (so called "broker
non-votes").  The failure of such customers to provide specific instruction with
respect to their  shares of Pacific  Common  Stock to their broker will have the
effect of a vote "against" such matters.

         If a quorum is not obtained at the Pacific Meeting,  or fewer shares of
Pacific  Common Stock are voted in favor of the  Agreements  and the Merger than
the number  required  for  approval  of the  Agreements  and the  Merger,  it is
expected that the Pacific Meeting will be postponed or adjourned for the purpose
of allowing  additional time for obtaining  additional  proxies or votes, and at
any subsequent  reconvening of the Pacific Meeting, all proxies will be voted in
the same manner as such proxies would have been voted at the original  convening
of  the  Pacific  Meeting  (except  for  any  proxies  which  have   theretofore
effectively been revoked or withdrawn).

         Any proxy  given  pursuant to this  solicitation  may be revoked by the
grantor at any time prior to the voting  thereof on the matters to be considered
at the  Pacific  Meeting  by  filing  with the  Secretary  of  Pacific a written
revocation or a duly executed proxy bearing a later date. All written notices of
revocation  and other  communications  with  respect  to  revocation  of Pacific
proxies should be addressed to Pacific Capital  Bancorp,  307 South Main Street,
Salinas,  California 93901, Attention:  Corporate Secretary. A holder of Pacific
Common Stock who previously signed and returned a proxy and who elects to attend
the Pacific Meeting and vote in person may withdraw his or her proxy at any time
before it is exercised by giving  notice of such  revocation to the Secretary of
Pacific at the  Pacific  Meeting  and voting in person by ballot at the  Pacific
Meeting;  however,  attendance at the Pacific  Meeting will not in and of itself
constitute a revocation of the proxy. In addition,  shareholders whose shares of
Pacific Common Stock are not  registered in their own name will need  additional
documentation  from the record  holder of such shares to vote  personally at the
Pacific Meeting.

Vote Required

         The  affirmative  vote of the  holders of a  majority  of the shares of
Pacific Common Stock  outstanding and entitled to vote at the Pacific Meeting is
necessary  to  approve  and adopt the  Reorganization  Agreement  and the Merger
Agreement and the transactions  contemplated thereby,  including the Merger. The
approval of the Reorganization Agreement by holders of Pacific Common Stock is a
condition to consummation of the Merger.

         THE PACIFIC  BOARD HAS  UNANIMOUSLY  APPROVED  THE  AGREEMENTS  AND THE
MERGER AND  RECOMMENDS  THAT  SHAREHOLDERS  OF PACIFIC  VOTE "FOR"  APPROVAL AND
ADOPTION OF THE AGREEMENTS AND THE TRANSACTIONS CONTEMPLATED THEREBY.


                          INFORMATION ABOUT THE PARTIES

SBB

         SBB is a California corporation incorporated in 1981 and a bank holding
company  registered  under  the BHC Act.  SBB is the  holding  company  and sole
shareholder  of SBB&T and Sanbarco  Mortgage  Corporation.  SBB&T was originally
chartered in 1960 as Santa Barbara National Bank. In 1979, the bank converted to
a California  state bank  charter and changed its name to "Santa  Barbara Bank &
Trust".  In 1995,  SBB&T  became a member of the Federal  Reserve  System and is
presently subject to examination and regulation by the Federal Reserve Board and
the  Commissioner  of Financial  Institutions  of the State of  California.  The
deposits of SBB&T are insured by the FDIC to the fullest  extent  authorized  by
law. Sanbarco Mortgage Company (formerly known as SBBT Service  Corporation),  a
California corporation, was formed in 1988 and is primarily involved in mortgage
brokering services and the servicing of brokered loans.

         SBB&T offers a full range of commercial banking services to households,
professionals,  and small- to  medium-sized  businesses.  These include  various
commercial,  real estate and consumer loan,  leasing and deposit  products.  The
bank offers other services including  electronic fund transfers and safe deposit
boxes to both individuals and businesses. In addition,  services such as lockbox
payment servicing, foreign exchange,  letters of credit, and cash management are


                                       25

<PAGE>



offered to business  customers.  SBB&T also offers trust and investment services
to  individuals  and  businesses.  These include  acting as trustee or agent for
living and  testamentary  trusts,  employee  benefit trusts,  and profit sharing
plans.  Investment management and advisory services are also provided.

         SBB&T operates from 27 locations serving the California  communities of
Buellton,  Camarillo,   Carpinteria,   Fillmore,  Goleta,  Lompoc,  Los  Olivos,
Montecito,  Oxnard, Santa Barbara, Santa Maria, Santa Paula, Solvang, Vandenberg
Village,  Ventura  and  surrounding  communities  in Santa  Barbara  and Ventura
counties.

         SBB does not engage in any significant  business  activities other than
the ownership of SBB&T and Sanbarco Mortgage  Corporation.  As a registered bank
holding  company,  SBB is subject to  supervision  and regulation by the Federal
Reserve Board.

         At June 30, 1998, SBB had consolidated  assets of  approximately  $1.62
billion,  deposits of approximately  $1.43 billion and shareholders's  equity of
$127.84  million.  As of June 30, 1998,  SBB and its  subsidiaries  employed 704
full-time  equivalent  employees.  The  principal  executive  offices of SBB are
located  at 1021  Anacapa  Street,  Santa  Barbara,  California  93101,  and its
telephone number is (805) 564-6298.

         Additional  information  regarding SBB and its subsidiaries is included
in  the  SBB  documents  incorporated  by  reference  herein.  See  "INFORMATION
INCORPORATED BY REFERENCE."

Security Ownership of Principal Shareholders and Management of SBB

         As of the SBB Record Date, _____ shares of SBB Common Stock were issued
and  outstanding  and entitled to vote at the SBB Meeting.  As of such date, the
directors and executive  officers of SBB  beneficially  owned, in the aggregate,
_____ shares of SBB Common Stock, comprising  approximately _____% of the voting
power of the SBB Common Stock outstanding.

         The  following  table  sets  forth  information  as of  July  31,  1998
pertaining to the beneficial  ownership of the SBB Common Stock by persons known
to SBB to own five percent  (5%) or more of such stock,  current  directors  and
executive  officers of SBB, and all directors and executive officers of SBB as a
group. The information contained herein has been obtained from SBB's records and
from information  furnished  directly by the individual or entity to SBB. Unless
otherwise indicated,  each director and executive officer listed below possesses
sole voting  power and sole  investment  power.  All of the shares  shown in the
following table are owned both of record and  beneficially,  except as indicated
in the notes to the table. All addresses of directors and executive officers are
in care of SBB at 1021 Anacapa Street, Santa Barbara, California, 93101.

<TABLE>
<CAPTION>
<S>                                     <C>                           <C>                       <C> 


                                                              Amount and Nature   
                                                                of Beneficial           Percent of  
           Beneficial Owner                Office               Ownership (1)            Class (2)
- ------------------------------------------------------------------------------------------------------
Santa Barbara Bank and Trust,                                      1,418,103              9.21%
   Trustee of the Santa Barbara
   Bank and Trust Employee Stock
   Ownership Trust
   1021 Anacapa Street
   Santa Barbara, CA 93101

David Abts                              EVP                           81,559(3)               *
Donald M. Anderson                      Chairman                     525,674(4)           3.41%
Frank H. Barranco, M.D.                 Director                      38,720(5)               *
Donald Barry                            EVP                           34,790(6)               *
Edward E. Birch                         Director                      39,405(7)               *
Terrill F. Cox                          Director                       5,000(8)               *
Richard M. Davis                        Director                      44,350(9)               *
Anthony Guntermann                      Director                      71,917(10)              *
Dale E. Hanst                           Director                     108,985(11)              *
Donald Lafler                           Sr. VP and                    40,858(12)              *
                                        CFO

                                       26
<PAGE>
                                                              Amount and Nature   
                                                                of Beneficial           Percent of  
           Beneficial Owner                Office               Ownership (1)            Class (2)
- ------------------------------------------------------------------------------------------------------
John J. McGrath                         Sr. VP and                   107,086(13)              *
                                        CCO
Harry B. Powell                         Director                      38,576(14)              *
Jay D. Smith                            Sr. VP, General              206,355(15)          1.34%
                                        Counsel and
                                        Corporate
                                        Secretary
David W. Spainhour                      President, CEO               461,328(16)          2.99%
                                        and Director
Cathy Steinke                           Sr. VP                        21,066(17)              *
William S. Thomas, Jr.                  Vice Chairman,                95,714(18)              *
                                        COO and
                                        Director
Susan Trescher                          Director                      13,108(19)              *
Kent M. Vining                          Sr. VP                        55,648(20)              *
                                                                   1,990,139(21)         12.67%
All directors and executive officers
   as a group (18 persons)
<FN>
- ---------------
*    Owns less than 1%.
(1)  Includes all shares  beneficially  owned,  whether  directly or indirectly,
     together with known  associates.  Also  includes any shares owned,  whether
     jointly or as  community  property,  with a spouse and shares  allocated to
     executive  officers  under the Santa Barbara Bank and Trust  Employee Stock
     Ownership  Plan.  Also  includes any stock  acquirable by exercise of stock
     options exercisable within 60 days following July 31, 1998.  All share data
     are stated as of July 31, 1998.
(2)  Percentages are stated to include  exercisable  stock options accounted for
     in the column  listing  "Amount and Nature of  Beneficial  Ownership."  See
     Footnote (1) above.
(3)  Includes  25,225  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable  stock  options  and  7,760  shares  in  Individual  Retirement
     Account.
(4)  Includes  12,778  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(5)  Includes   2,600  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(6)  Includes   4,000  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(7)  Includes  24,083  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(8)  Includes   4,000  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(9)  Includes   2,600  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable  stock  options and  17,150,  shares in  Individual  Retirement
     Account.
(10) Includes  24,083  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(11) Includes  35,695  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(12) Includes  15,251  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(13) Includes   3,000  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable  stock  options  and  1,088  shares  in  Individual  Retirement
     Account.
(14) Includes  11,172  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(15) Includes  14,130  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(16) Includes   6,001  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(17) Includes  49,969  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(18) Includes  85,600  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(19) Includes 1,322 shares in Individual Retirement Account.
(20) Includes  12,000  shares  which  may  be  acquired  upon  the  exercise  of
     exercisable stock options.
(21) Includes  310,704  shares  which  may be  acquired  upon  the  exercise  of
     exercisable  stock options.  Actual share ownership as of July 31, 1998, by
     the directors and executive officers was 1,679,435.
</FN>
</TABLE>
         It is currently  expected that each such director and executive officer
of SBB will vote the shares of SBB Common Stock beneficially owned by him or her
in favor of the matters to be considered at the SBB Meeting. In addition,  as of
the SBB Record Date,  Pacific's  directors and executive  officers  beneficially
owned  _______  shares,  or less than ____%,  of the  outstanding  shares of SBB
Common  Stock,  all of which they  intend to vote in favor of the  matters to be
considered at the SBB Meeting.
                                       27
<PAGE>



Pacific

         Pacific is a  California  corporation  incorporated  in 1983 and a bank
holding company registered under the BHC Act. Pacific's headquarters are located
in Salinas, California.  Pacific's principal wholly owned subsidiaries are First
National Bank of Central  California  (formerly  known as First National Bank of
Monterey  County) ("First  National"),  which  commenced  operations on April 2,
1984,  and  South  Valley  National  Bank  ("South  Valley"),   which  commenced
operations  on April 21,  1982.  On November 20, 1996,  Pacific  acquired  South
Valley Bancorporation and its banking subsidiary, South Valley, headquartered in
Morgan Hill, California,  in a merger transaction accounted for as a "pooling of
interests." The primary  federal  regulator for each of First National and South
Valley is the OCC. The  deposits of First  National and South Valley are insured
by the FDIC to the extent permitted by law.

         Each of First National and South Valley is a commercial  bank providing
a wide range of commercial banking services to individuals,  professionals,  and
small- and  medium-sized  businesses.  These  services  include those  typically
offered by commercial  banks,  such as: checking,  interest checking and savings
accounts,  travelers  checks,  safe deposit boxes,  collection  services,  night
depository  facilities  and wire and telephone  transfers.  In addition to these
deposit  services,  First National and South Valley also provide a full array of
loan products including commercial,  real estate and consumer loans as well as a
variety of  government  assisted  loan  programs  such as SBA or Rural  Economic
Community Development Service guaranteed loans.  Professional firms, individuals
and businesses form the core of these banks' customer and deposit bases. Neither
First National nor South Valley offer trust services.

         First National operates from six locations  serving Monterey,  Salinas,
Carmel,  Watsonville,  and surrounding areas in Monterey and Santa Cruz Counties
in California. South Valley operates from four locations and serves Morgan Hill,
Gilroy,  Hollister,  San Juan Bautista, and surrounding areas in Santa Clara and
San Benito Counties in California.

         On August 4,  1998,  First  National  Bank and  South  Valley  filed an
application with the OCC to merge South Valley with and into First National Bank
under the  charter of First  National  Bank  (defined  herein as the  "Affiliate
Merger").  Upon  consummation of the Affiliate  Merger,  which is expected to be
completed  during the fourth quarter of 1998, all of the offices of South Valley
will be  operated as  branches  of First  National  Bank under the name of South
Valley  National  Bank.  No  assurance  can be given as to  whether  or when the
Affiliate Merger will be completed.  Completion of the Affiliate Merger is not a
condition  to  completion  of the  transaction  described  in this  Joint  Proxy
Statement/Prospectus.

         Pacific  does not  engage in any  business  activities  other  than the
ownership  of First  National  and South  Valley and the  ownership of one other
wholly owned  subsidiary,  Pacific Capital  Services  Corporation,  a California
corporation.
 Pacific Capital  Services  Corporation  was  incorporated on April 22, 1985, to
arrange and broker  residential,  commercial  and  construction  loans and other
extensions of credit and is currently an inactive  corporation.  As a registered
bank holding  company,  Pacific is subject to supervision  and regulation by the
Federal Reserve Board.

         At June 30,  1998,  Pacific had  consolidated  assets of  approximately
$815.56 million,  deposits of approximately  $730.33 million and  shareholders's
equity of $76.064  million.  As of June 30, 1998,  Pacific and its  subsidiaries
employed 288 full-time equivalent employees.  The principal executive offices of
Pacific are located at 307 South Main Street, Salinas, California 93901, and its
telephone number is (408) 757-4900.

         Additional  information  regarding  Pacific  and  its  subsidiaries  is
included  in  the  Pacific  documents  incorporated  by  reference  herein.  See
"INFORMATION INCORPORATED BY REFERENCE."

Security Ownership of Management of Pacific

         As of the Pacific  Record Date,  _____  shares of Pacific  Common Stock
were issued and outstanding and entitled to vote at the Pacific  Meeting.  As of
such date, the directors and executive officers of Pacific  beneficially  owned,
in the aggregate, _____ shares of Pacific Common Stock, comprising approximately
_____% of the voting power of the Pacific Common Stock outstanding.

         The  following  table  sets  forth  information  as of  July  31,  1998
pertaining to the  beneficial  ownership of the Pacific  Common Stock by current
directors  and  executive  officers of Pacific,  and all directors and executive
officers of Pacific as a group.  As of July 31, 1998, no person known to Pacific
owned more than five percent (5%) of the  outstanding  shares.  The  information
contained  herein has been obtained from Pacific's  records and from information
furnished directly by  the individual or  entity to Pacific.   Unless  otherwise


                                       28

<PAGE>
indicated,  each  director and executive  officer  listed below  possesses  sole
voting power and sole investment power. All of the shares shown in the following
table are owned  both of record and  beneficially,  except as  indicated  in the
notes to the table.  All addresses of directors  and  executive  officers are in
care of Pacific at 307 South Main Street, Salinas, California, 93901.

<TABLE>
<CAPTION>
<S>                                     <C>                           <C>                       <C> 
                                                                 Amount and Nature   
                                                                   of Beneficial           Percent of  
           Beneficial Owner     Office                             Ownership (1)            Class (2)
- ------------------------------------------------------------------------------------------------------

Charles E. Bancroft             Director                              37,688(3)                  *
Dennis A. DeCius                EVP and CFO                           26,814(4)                  *
Gene DiCicco                    Director                              39,775(3) (5)              *
Dale R. Diederick               EVP & Loan                             7,911(6)                  *
                                   Administrator
Lewis L. Fenton                 Director                              45,256(3) (7)          1.00%
Gerald T. Fry                   Director                              35,670(3) (8)              *
James L. Gattis                 Director, Secretary                   43,719(3)                  *
Eugene R. Guglielmo             Director                              55,873(9)              1.24%
Stanley R. Haynes               Director                              39,879(3) (10)             *
D. Vernon Horton                Director, Chairman                    83,077(11)             1.84%
Hubert W. Hudson                Director                              52,347(12)             1.16%
William J. Keller               Director                              45,135(13)             1.00%
Roger C. Knopf                  Director                             130,618(14)             2.90%
Clayton C. Larson               Director, President                   93,031(15)             2.07%
William S. McAfee               Director                              66,385(3) (16)         1.47%
William H. Pope                 Director                              49,963(3) (17)         1.11%
Mary Lou Rawitser               Director                              17,337(18)                 *
William K. Sambrailo            Director                              56,797(19)             1.26%
Robert B. Sheppard              Director                              51,608(3) (20)         1.15%
                                                                     978,883                21.73%
All directors and executive
   officers as a group
   (19 persons)
<FN>
- ---------------
*    Owns less than 1%.
(1)  All shares are calculated on the basis of the number of current shares held
     plus  shares  subject to options  that are  currently  exercisable  or will
     become exercisable within sixty (60) days following July 31, 1998.
(2)  All  percentages  are  calculated  on the  basis of the  number  of  shares
     outstanding  as of July 31,  1998 plus shares  subject to options  that are
     currently  exercisable  or will become  exercisable  within sixty (60) days
     after July 31, 1998.
(3)  Includes  7,031 shares  subject to presently  exercisable  options  granted
     under  Pacific's  1992  Directors'  Stock  Option  Plan and  22,654  shares
     issuable upon exercise of options granted under Pacific's 1994 Stock Option
     Plan.
(4)  Includes  5,024 shares  allocated as of December 31, 1997,  to Mr.  DeCius'
     account  pursuant to Pacific's  Employee  Stock  Ownership  Plan, and 2,169
     shares held in the 1991 Pacific  Capital Bancorp  Irrevocable  Nonqualified
     Deferred  Compensation  Trust, FBO Dennis A. DeCius and 717 shares acquired
     under  Pacific's  401(k) Profit Sharing Plan.  Also includes 16,834 held in
     the name of the 1994 DeCius  Revocable  Trust,  1,057  shares held by Smith
     Barney in an IRA for the benefit of Mr.  DeCius and 1,013 shares held in an
     IRA by Smith Barney for the benefit of his wife.
(5)  Includes 2,786 shares held by DiCicco  Centers,  a partnership of which Mr.
     DiCicco is a general partner.
(6)  Includes 3,023 shares allocated as of December 31, 1997 to Mr.  Diederick's
     account pursuant to Pacific's Employee Stock Ownership Plan.
(7)  Includes 26,279 shares held in the name of the Lewis L. Fenton Living Trust
     and 18,977 shares held in an IRA by Wells Fargo Bank for the benefit of Mr.
     Fenton.
(8)  Includes  2,980 shares held by Dean Witter in an IRA for the benefit of Mr.
     Fry.
(9)  Includes  10,500 shares subject to presently  exercisable  options  granted
     under Pacific's 1994 Stock Option Plan. Also includes 27,840 shares held in
     the name of Emilio  Guglielmo  Winery  Inc.,  of which Mr.  Guglielmo  is a
     shareholder,   director  and  executive  officer,  3,616  shares  owned  by
     Guglielmo Winery,  Inc. Profit Sharing Plan and 250 shares held in the name
     of Mr. Guglielmo's children and grandchild.
(10) Includes  35,754 shares held in the name of Stanley Haynes Living Trust and
     1,185 shares owned by Cinderella Showcase,  Inc., a corporation  controlled
     by Mr. Haynes. Also includes 2,459 shares held by Dean Witter in an IRA for
     the  benefit  of Mr.  Haynes  and 481  shares  owned by Mr.  Haynes and his
     daughter as joint tenants.
(11) Includes  7,208 shares  allocated  as of December 31, 1997 to Mr.  Horton's
     account pursuant to Pacific's  Employee Stock Ownership Plan and 674 shares
     held in the 1991 Pacific Capital Bancorp Irrevocable Nonqualified Deferred

                                       29
<PAGE>
     Compensation  Trust,  FBO D. Vernon  Horton.  Includes 2,127 shares held by
     Smith Barney in an IRA for the benefit of Mr. Horton and 72,598 shares held
     in the name of D. Vernon  Horton and Joyce Marie  Horton  Revocable  Trust.
     Also  includes 470 shares held in the Jeffrey L. Meeks and Debra Burk Meeks
     Irrevocable Trust FBO Mallory Mae Meeks of which Mr. Horton is Trustee.
(12) Includes  52,347  shares held in the name of Hubert W. Hudson & Patricia A.
     Hudson Revocable Trust.
(13) Includes  10,500 shares subject to presently  exercisable  options  granted
     under Pacific's 1994 Stock Option Plan. Also includes 7,907 held by Charles
     Schwab & Co.,  Inc. in an IRA for the benefit of Dr. Keller and 14,574 held
     in the name of William James Keller & Clara Downs Keller Trust.
(14) Includes  10,500 shares subject to presently  exercisable  options  granted
     under  Pacific's 1994 Stock Option Plan.  Also includes  26,658 held by the
     Knopf  Construction  Co.  Retirement Plan and 2,782 held in the name of Mr.
     Knopf's children.
(15) Includes  7,082 shares  allocated  as of December 31, 1997 to Mr.  Larson's
     account  pursuant to  Pacific's  Employee  Stock  Ownership  Plan and 6,851
     shares held in the 1991 Pacific  Capital Bancorp  Irrevocable  Nonqualified
     Deferred Compensation Trust, FBO of Clayton C. Larson. Also includes 70,604
     held in the name of the  Clayton C.  Larson  and  Sharon Joy Larson  Family
     Trust,  7,663 shares held by First Trust & Co. in an IRA for the benefit of
     Mr. Larson,  636 shares held in an IRA by First Trust & Co. for the benefit
     of his wife and 195 shares held in the name of Mr.  Larson's  children with
     Mrs. Larson as custodian.
(16) Includes  31,691  held by Paine  Webber  in an IRA for the  benefit  of Dr.
     McAfee.
(17) Includes  14,135  shares  held by W.H.  Pope,  Inc.,  as to which Mr.  Pope
     exercises  sole voting and  investment  control,  2,930  shares held by the
     William H. Pope Family  Trust and 1,088 held in an IRA by Charles  Schwab &
     Co.,  Inc.  for the benefit of Mr.  Pope.  Also  includes  2,125 shares FBO
     Jennifer Gudrun Church of which Mr. Pope is Trustee.
(18) Includes  2,500 shares  subject to presently  exercisable  options  granted
     under Pacific's 1994 Stock Option Plan.
(19) Includes  22,277  shares  held in the name of William K.  Sambrailo  Trust,
     10,824  shares  held in name of the  Charles  Sambrailo  Paper  Co.  Profit
     Sharing  Trust over when Mr.  Sambrailo  exercises  voting  and  investment
     control,  21,499  shares  held in the  name  of the  William  K.  Sambrailo
     Community  Property Trust, 141 shares held by Mr. Sambrailo and Clarence J.
     Ferrari, Jr., Co-Trustees of the Charles P. Sambrailo,  Jr., QTIP Trust and
     2,056  shares held by Paul E.  Crabb,  Trustee,  The  William K.  Sambrailo
     Grandchildren's Trust I, II and III.
(20) Includes  21,923  shares held by The Bank of  California  in an IRA for the
     benefit of Mr. Sheppard.
</FN>
</TABLE>

         It is currently  expected that each such director and executive officer
of Pacific will vote the shares of Pacific  Common Stock  beneficially  owned by
him or her in favor of the matters to be considered at the Pacific  Meeting.  As
of the Pacific Record Date, subsidiaries of Pacific did not beneficially own any
outstanding  shares of Pacific  Common  Stock.  As of the Pacific  Record  Date,
directors and executive officers of SBB beneficially owned 2,713 shares, or less
than 1.0%, of the outstanding  shares of Pacific Common Stock, all of which they
intend to vote in favor of the matters to be considered at the Pacific Meeting.

                                   THE MERGER

         The following is a brief summary of certain aspects of the Merger. This
summary  does not purport to be complete  and is  qualified  in its  entirety by
reference to the  Reorganization  Agreement and the Merger Agreement,  copies of
which are  attached to this Joint Proxy  Statement/Prospectus  as Appendix A and
Appendix B, respectively, and are incorporated herein by reference. Shareholders
of SBB and Pacific are urged to read the Agreements carefully.

General

         The  SBB  Board  and  the  Pacific   Board  have  each   approved   the
Reorganization Agreement and the Merger Agreement,  which provide for the Merger
of SBB and Pacific,  with SBB as the surviving corporation in the Merger, and an
amendment to the Articles of  Incorporation of SBB to provide that the Surviving
Corporation  will operate under the resulting  name  "Pacific  Capital  Bancorp"
(defined  herein as the "Name  Change").  At the Effective  Time,  each share of
Pacific Common Stock (excluding shares held by Pacific, SBB, or their respective
subsidiaries,  in each case other than shares held in a fiduciary capacity or as
a result of debts  previously  contracted,  and  excluding  all  shares  held by
shareholders who perfect their dissenters' rights) issued and outstanding at the
Effective  Date will be converted  into 1.935 shares of SBB Common  Stock.  Each
share of SBB  Common  Stock  issued  and  outstanding  immediately  prior to the
Effective  Time will remain  issued and  outstanding  after the Merger as Common
Stock of the Surviving Corporation. See "THE MERGER -- Merger Consideration."

         The SBB Board and the Pacific  Board each believe that the terms of the
Reorganization  Agreement  and the Merger  Agreement are in the best interest of
the  parties  and  their   respective   shareholders  and  recommends  that  the
shareholders  of  each  of SBB  and  Pacific  vote  to  approve  and  adopt  the
Reorganization Agreement and  the Merger Agreement  and the consummation  of the

                                       30
<PAGE>



transactions contemplated thereby, including the Merger and the Name Change. The
conclusions  of the Board of  Directors  of SBB and Pacific  with respect to the
Merger are based upon a number of factors more fully described herein, including
the receipt of fairness opinions from their respective financial advisors.

Structure of the Merger

         The Reorganization Agreement provides that, subject to the satisfaction
or waiver  (where  permissible)  of the  conditions  set forth therein (see "THE
MERGER -- Certain  Conditions to  Consummation of the Merger") and in accordance
with the GCL, at the Effective  Time,  Pacific will merge with and into SBB. SBB
will be the surviving  corporation in the Merger and will continue its corporate
existence under the name "Pacific Capital  Bancorp".  At the Effective Time, the
separate  corporate  existence  of  Pacific  will  terminate.  The  Articles  of
Incorporation  of SBB,  as  amended  pursuant  to the  Merger  Agreement  and as
otherwise in effect at the Effective Date, will be the Articles of Incorporation
of the Surviving  Corporation,  and the Bylaws of SBB, as amended to reflect the
Bylaw  Amendment and as otherwise in effect at the Effective  Date,  will be the
Bylaws of the combined company.

Merger Consideration

         At the Effective Time of the Merger, each share of Pacific Common Stock
outstanding,  other than  shares  held by SBB or  Pacific  or any  wholly  owned
subsidiary  thereof  (except,  in  both  cases,  for  shares  held  directly  or
indirectly in trust accounts, managed accounts and the like or otherwise held in
a fiduciary,  custodial or similar capacity that are beneficially owned by third
parties ("Trust Account  Shares") or in respect of a debt previously  contracted
("DPC  Shares")),  will be  converted  into the right to  receive  1.935  shares
(defined  herein as the  "Exchange  Ratio") of SBB  Common  Stock.  Because  the
Exchange  Ratio is fixed and  because  the market  price of SBB Common  Stock is
subject to fluctuation, the value of the shares of SBB Common Stock that holders
of Pacific  Common  Stock will  receive in the Merger may  increase  or decrease
prior to and following the Merger. Pacific's obligation to consummate the Merger
is, however,  subject to, among other things, the average of the average closing
bid and asked price of a share of SBB Common Stock as reported on Nasdaq for the
twenty (20) business day period  immediately  preceding the fifth (5th) business
day prior to the  Closing  Date (the "SBB  Average  Price")  being not less than
$22.95.  If the SBB Average  Price shall be less than $22.95 and the parties are
unable in good faith to renegotiate the Exchange Ratio within three (3) business
days after  determination  of the SBB Average Price,  then Pacific may terminate
the Reorganization  Agreement. The market prices of SBB Common Stock and Pacific
Common  Stock as of a recent  date are set forth on the cover page of this Joint
Proxy Statement/Prospectus. Shareholders of Pacific are advised to obtain recent
market  quotations for SBB Common Stock and Pacific  Common Stock.  No assurance
can be given as to the market price of SBB Common Stock or Pacific  Common Stock
immediately prior to the Effective Date, or as to the market price of SBB Common
Stock on or after the Effective Date.

         Each  outstanding  share of Pacific  Common  Stock  owned by SBB or its
wholly owned  subsidiaries or Pacific or its wholly owned  subsidiaries  (except
for Trust Account  Shares and DPC Shares) will be canceled at the Effective Time
and will cease to exist, and no SBB Common Stock or other  consideration will be
delivered  in  exchange  therefor.   Shares  of  SBB  Common  Stock  issued  and
outstanding  immediately  prior to the  Effective  Time will  remain  issued and
outstanding immediately after the Merger.

         The merger consideration,  including the Exchange Ratio, was determined
through negotiations between management of SBB and Pacific,  taking into account
the relative value of SBB Common Stock and Pacific Common Stock. Each of SBB and
Pacific  were  advised  with  respect to such  negotiations  by their  financial
advisors,  The Bank Advisory Group,  Inc. (defined herein as "Advisory") and Van
Kasper & Company (defined herein as Van Kasper), respectively.

         Immediately following the Merger,  shareholders of SBB and Pacific will
own approximately ____% and _____%, respectively, of the then outstanding shares
of Common  Stock of the  Surviving  Corporation  (without  giving  effect to the
exercise of the Pacific Stock Options).

Background of the Merger

         The SBB Board has focused on the  Central  Coast of  California  as the
geographic area for expansion and creation of a strong community bank franchise.
In 1995,  SBB&T, the principal  subsidiary of SBB,  expanded from Southern Santa
Barbara County to West Ventura  County by opening three de novo offices.  During
1997, SBB&T acquired  two community  banks  in cash  transactions:  First Valley


                                       31

<PAGE>



Bank,  located in North Santa Barbara  County,  and Citizens State Bank of Santa
Paula,  located in  Ventura  County,  thereby  expanding  the bank's  geographic
coverage on the Central Coast.

         The SBB Board has recognized that growth through  acquisition can be an
effective  means of  leveraging  capital and  offering  the bank's  products and
services over a larger geographic market that has similar characteristics to the
communities  currently  served.  In  addition,  the SBB Board  believes  that an
expansion strategy within the Central Coast increases  long-term value for SBB's
shareholders by building a more geographically  diversified  organization with a
growing  customer  base and  business  volume.  The growing  base  provides  the
opportunity to enhance revenue by cross- selling products while at the same time
pursuing and  implementing the rapidly  evolving  technological  advances in the
financial  services  industry on a more cost  competitive  basis as expenses are
spread  over a larger  organization.  The SBB  Board  has  discussed  in  annual
planning  retreats the possibility of a strategic  combination with a compatible
bank or bank holding  company  serving the Central  Coast as a means by which to
effect this expansion strategy.

         Mr. Donald Anderson, Chairman of the Board of SBB, Mr. David Spainhour,
President of SBB,  Mr. Vernon Horton,  Chairman of the Board of Pacific, and Mr.
Clayton Larson, President  of  Pacific, are  well  acquainted  with  each  other
through their association at banking industry meetings for many years.

         In April 1998,  Mr.  Spainhour  contacted  Mr.  Larson to inquire as to
Pacific's  interest  in  initiating  discussions  that  might lead to a business
combination involving SBB and Pacific. Mr. Larson expressed interest in pursuing
the subject and a meeting was  arranged  for April 30,  1998,  at which  Messrs.
Larson, Spainhour,  Horton, Anderson and Mr. William S. Thomas, Jr., President &
Chief Executive  Officer of SBB&T, were to attend. It was agreed at that meeting
to assign key officers of both  organizations the task of identifying  potential
cost  savings  to be  achieved  in a  business  combination  involving  the  two
organizations.  Information was developed and exchanged during the month of May,
and both organizations consulted with outside legal and financial advisors.

         At a  special  meeting  of the SBB  Board  held on  June 9,  1998,  Mr.
Spainhour and other members of the senior  management  team of SBB presented the
proposed  terms  for  a  possible  business   combination  with  Pacific.   This
presentation  included  information  about Pacific and its financial  condition,
performance,  markets and  management,  reasons for the proposed  merger and its
benefits to SBB,  plans for on-site due diligence  and the proposed  addition of
four Pacific  directors  to the SBB Board upon  completion  of the  transaction.
Following  this  presentation,  the SBB Board  adopted a resolution  authorizing
representatives  of SBB to negotiate with  representatives  of Pacific regarding
the principal terms of a proposed business  combination.  These discussions were
initially  concluded by June 10, 1998 so that  representatives  of Pacific could
discuss the proposed terms with the Executive Committee of the Pacific Board and
prepare for a presentation  before a special meeting of the Pacific Board during
the week of June 15, 1998.

         In addition to the discussions with SBB, Pacific had received a written
expression of interest from one  institution  and an oral expression of interest
from another. The Pacific Board met on June 18, 1998 to evaluate in detail SBB's
and the other two  institutions'  proposals to acquire  Pacific.  In addition to
price,  the  Pacific  Board  was  concerned  that  the  stock  of one of the two
institutions  (other than SBB) was trading at very high  multiples of book value
and  earnings  and that the  institution  was at that time  proceeding  with the
acquisition of another bank of significant size. The Pacific Board was concerned
regarding the ability of the institution to effectively integrate and digest the
new acquisition.  With the other  institution,  the Pacific Board considered the
price  compared to that  offered by SBB,  cultural  differences  between the two
organizations and the impact on customers and employees of Pacific.  Thus, after
reviewing  SBB's proposal along with two other  proposals in  consultation  with
their  outside  advisors,  the Pacific  Board agreed to accept SBB's terms for a
business  combination,  subject to  development  of a definitive  agreement  and
satisfactory  completion of mutual due diligence.  The Pacific Board  authorized
management to proceed to negotiate a definitive agreement with SBB.

         Following  the  Pacific  Board  meeting,  legal  counsel  for  SBB  was
instructed to begin work on  preparation  of a definitive  agreement and to work
with Pacific's legal counsel to resolve any legal issues.  It was also agreed by
the parties to begin due diligence prior to signing any definitive agreement.

         On June 19, 1998, an annual planning  retreat of the SBB Board was held
and SBB's  financial  advisors  reviewed the financial  analysis of the proposed
transaction  with Pacific.  The SBB Board  discussed the financial and strategic
implication  of  this  acquisition  in  relation  to the  company's  long  range
strategic plan. The  SBB Board was  also  provided with  updated  information on


                                       32

<PAGE>



developments in the banking industry and discussed  various recent  acquisitions
and trends in the banking industry.

         At a regular  meeting of the SBB Board held on June 23,  1998,  the SBB
Board  passed a  resolution  authorizing  certain  officers of SBB to execute an
Agreement  and  Plan  of   Reorganization   by  and  between  SBB  and  Pacific,
substantially  providing for, among other things, the merger of Pacific with and
into SBB.

         On June 24, 1998,  Messrs.  Spainhour and Thomas, on behalf of SBB, and
Messrs. Horton and Larson, on behalf of Pacific, met with key staff members from
their respective organizations to begin integration planning.

         On July 14, 1998,  the Pacific  Board  received an  unsolicited  second
letter from one of the two prior  prospective  acquirors  to propose  again that
Pacific consider a combination with it. Upon receipt of the letter, a meeting of
the Pacific Executive Committee was convened  telephonically on July 16, 1998 to
discuss the second letter. The Executive Committee discussed and re-affirmed the
Pacific Board's concern regarding a proposed  combination with this institution,
including  among  other  things,  the price  compared  to that  offered  by SBB,
compatibility  of  management  of the two  organizations,  cultural  differences
between the two organizations and the probable impact on customers and employees
of Pacific.  The Executive Committee decided to decline the institutions's offer
and to proceed to negotiate a definitive agreement with SBB.

         During the  remainder of June and first week of July,  preliminary  due
diligence and drafting of the definitive  agreement was  completed.  The Pacific
Board met on July 20, 1998 to discuss the finalized draft of the  Reorganization
Agreement and the proposed Stock Option  Agreements.  Van Kasper orally rendered
to the Pacific Board a fairness  opinion to the effect that the financial  terms
of the  Merger  as set  forth in the  Reorganization  Agreement  was fair from a
financial  point of view to the  shareholders  of  Pacific.  The  Reorganization
Agreement was signed on July 20, 1998, and the parties  immediately issued press
releases announcing the proposed merger.

Reasons for the Merger; Recommendation of the SBB Board

         In reaching its  conclusion to approve the  Agreements  and the Merger,
the SBB Board  considered  numerous  factors,  including the following:  (i) the
creation of additional  value for shareholders of SBB, which is likely to result
from the acquisition of operations from Pacific,  and the resulting cost savings
and revenue  enhancements of the combined  companies which SBB could not achieve
over the existing asset base and geographic  markets it currently  serves;  (ii)
the  similarity of the Pacific  markets to those markets  already served by SBB,
which will allow for the extension of existing market communication and branding
strategies without significant revisions;  (iii) the similar cultures of the two
banking organizations which will facilitate not only the post-merger integration
of the two companies,  but will also create an atmosphere of  partnership  among
the sister banks in the multi-community bank holding company structure; (iv) the
fairness opinion of SBB's financial advisor that the exchange ratio is fair from
a financial point of view to the  shareholders  of SBB; in this regard,  the SBB
Board considered the percentage  ownership  offered to Pacific  shareholders and
the  relationship of that percentage to the future growth of earnings and equity
over and  above  the  anticipated  growth  of  earnings  and  equity of SBB on a
stand-alone  basis;  (v)  the  SBB  Board's  review  of  the  provisions  of the
Agreements  and  related  documents;  and (vi) the impact of this  Merger on the
existing  operations  of SBB and its  impact on SBB's  ability  to  continue  to
fulfill the promise of its corporate mission, vision and values.

         When  considering  these  factors,  the SBB  Board did not  assign  any
relative or specific weights to the factors considered.  However,  the SBB Board
discussed and considered these factors in determining  whether or not to approve
the  proposed  Merger.  The SBB Board  viewed  all of these  factors  as a whole
without  weighing  individual  factors in reaching its conclusion to approve the
Agreements and the Merger.

         FOR THE REASONS SET FORTH ABOVE, THE SBB BOARD HAS UNANIMOUSLY APPROVED
THE AGREEMENTS AND THE MERGER AND RECOMMENDS THAT SHAREHOLDERS OF SBB VOTE "FOR"
APPROVAL  AND  ADOPTION  OF THE  AGREEMENTS  AND THE  TRANSACTIONS  CONTEMPLATED
THEREBY.

Reasons for the Merger; Recommendation of the Pacific Board

         In reaching its  conclusion to approve the  Agreements  and the Merger,
the Pacific Board considered numerous factors,  including the following: (i) the
creation of additional value for  shareholders of Pacific which additional value


                                       33

<PAGE>



results  from certain cost savings and  potential  revenue  enhancements  of the
combined  companies  and which  cannot be  achieved  if  Pacific  were to remain
independent;  (ii) the similar, but not overlapping,  markets of each of Pacific
and SBB and the fact that each company is familiar with the other's  market such
that a  combined  entity  would be a  stronger  competitor  in their  respective
markets;  (iii) the similar cultures of the two banking organizations which will
facilitate,   among  other  things,  the  post-Merger  integration  of  the  two
companies;  (iv) the Van Kasper Fairness Opinion that the Exchange Ratio is fair
from a financial point of view to the  shareholders of Pacific;  in this regard,
the Pacific  Board  considered  the  premium  represented  by the  consideration
offered to  shareholders  of Pacific in  relation to the book value per share of
Pacific  Common Stock;  (v) the Pacific  Board's review of the provisions of the
Agreements and related  documents with Van Kasper and Pacific's  legal advisors;
(vi) the fact that the  Merger  will be  tax-deferred  for  federal  income  tax
purposes to the holders of Pacific  Common  Stock (other than in respect to cash
paid in lieu of fractional shares and for dissenter's rights);  (vii) the market
liquidity  and  dividend  history of SBB  Common  Stock;  (viii) the  historical
financial  performance and future  prospects of SBB, the current and prospective
economic and regulatory  environment,  burdens and constraints affecting banking
for banking  services;  and (ix) the probable  impact of the Merger on customers
and employees and the communities served by Pacific.

         When  considering  these factors,  the Pacific Board did not assign any
relative or specific  weights to the factors  considered.  However,  the Pacific
Board  discussed and considered  these factors in determining  whether or not to
approve the proposed Merger.  The Pacific Board viewed all of these factors as a
whole without weighing  individual factors in reaching its conclusion to approve
the Agreements and the Merger.

         FOR THE REASONS SET FORTH  ABOVE,  THE  PACIFIC  BOARD HAS  UNANIMOUSLY
APPROVED THE  AGREEMENTS  AND THE MERGER AND  RECOMMENDS  THAT  SHAREHOLDERS  OF
PACIFIC VOTE "FOR" APPROVAL AND ADOPTION OF THE AGREEMENTS AND THE  TRANSACTIONS
CONTEMPLATED THEREBY.

Opinion of Financial Advisors

         SBB

         The Bank Advisory  Group,  Inc.  (defined  herein as  "Advisory")  is a
recognized  investment  banking  firm  regularly  engaged  in the  valuation  of
financial  institutions  and their  securities  in  connection  with mergers and
acquisitions,  and in  valuations  for  estate,  corporate  and  other  business
purposes.  Since  August  1990,  and prior to its  retention  for this  specific
assignment, Advisory has served as a financial advisor to SBB under the terms of
a retainer agreement (the "Retainer Agreement").  Services routinely provided to
SBB by Advisory under the Retainer  Agreement  include,  but are not limited to:
(i)  meeting  with the SBB  Board,  on an as needed  basis,  for the  purpose of
discussing current trends in the bank merger and acquisition arena together with
SBB's ongoing bank acquisition efforts;  reviewing state and national peer group
data  as  it  relates  to  SBB's  most   recent   financial   performance,   and
reviewing/discussing other relevant issues as needed; and, (ii) providing merger
and acquisition support services,  generally analytical and financial in nature,
together  with  limited   negotiating   support   services  in  connection  with
preliminarily  reviewing  target bank  opportunities,  as they are identified by
SBB. From time-to-time,  SBB has required merger & acquisition advisory services
above and beyond the scope of the services routinely provided under the Retainer
Agreement.  Therefore,  on occasion,  Advisory  has  provided SBB with  specific
financial  advisory  services,  as  required  by SBB,  including  more  specific
negotiating support services and more detailed financial analyses.

         Pursuant  to an  engagement  letter  dated  August 7, 1998,  signed and
executed  by  SBB  on  August  12,  1998,  SBB  engaged  Advisory  to  act as an
independent  financial  advisor to the SBB Board in  connection  with the Merger
and,  subject  to  Advisory's  final  due  diligence  investigation,  to issue a
fairness  opinion letter,  for disclosure to shareholders of SBB.  Specifically,
based on  Advisory's  reputation  and  qualifications  in  evaluating  financial
institutions,  the SBB Board  requested that Advisory render advice and analysis
in  connection  with the  Merger,  and to provide an opinion  with regard to the
fairness  --from the  perspective of the  shareholders of SBB Common Stock -- of
the financial terms of the Merger.

         Based on all factors  that  Advisory  deemed  relevant and assuming the
accuracy and  completeness of the  information  and data provided,  Advisory has
rendered a written  opinion,  dated  ___________,  1998 (the "Advisory  Fairness
Opinion"),  to the  effect  that the  terms of the  Merger,  including,  without
limitation,  the Exchange Ratio and the consequential pro forma ownership in the
Surviving  Company of the  shareholders  of SBB Common Stock,  are fair,  from a
financial point of view, to the shareholders of SBB Common Stock.



                                       34

<PAGE>



         No limitations were imposed by the SBB Board of Directors upon Advisory
with respect to the investigations  made or procedures followed in rendering the
Advisory  Fairness Opinion.  Advisory does not, and its officers,  directors and
shareholders do not, own any shares of SBB Common Stock or Pacific Common Stock;
nor does  Advisory  make a market  in the  stock of SBB,  Pacific,  or any other
publicly-traded security, financial or otherwise.

         The full  text of the  Advisory  Fairness  Opinion,  which  sets  forth
certain  assumptions  made,  matters  considered,   and  limits  on  the  review
undertaken by Advisory,  is attached hereto as Appendix F. SBB  shareholders are
urged to read the  Advisory  Fairness  Opinion  in its  entirety.  The  Advisory
Fairness  Opinion,  addressed  to the SBB Board of  Directors,  covers  only the
fairness of the financial  terms of the Merger,  from a financial point of view,
to the  shareholders of SBB Common Stock.  The financial terms include,  but are
not limited to, the Exchange Ratio and the  consequential pro forma ownership in
the Surviving  Company of the  shareholders  of SBB Common  Stock.  The Advisory
Fairness  Opinion does not constitute an endorsement of the Merger,  and it does
not represent a recommendation to any SBB shareholder as to how such shareholder
should vote  regarding the Merger.  Advisory was not asked to consider,  and the
Advisory Fairness Opinion does not address,  the relative merits of the proposed
Merger as compared to alternative  business  strategies that might exist for SBB
or the  effect  of any  other  transaction(s)  in which  SBB  might  engage.  In
furnishing  the Advisory  Fairness  Opinion,  Advisory does not purport to be an
expert  with  respect to the  Registration  Statement  of which this Joint Proxy
Statement/Prospectus is part within the meaning of the term "experts" as used in
the Securities Act and the rules and  regulations  promulgated  thereunder,  nor
does Advisory purport that its opinion  constitutes a report or valuation within
the meaning of Section 11 of the  Securities  Act. The summary of the procedures
and analysis  performed and assumptions  used by Advisory set forth in the Joint
Proxy Statement/Prospectus is qualified in its entirety by reference to the text
of the Advisory Fairness Opinion.

         Summary of  Preliminary  Analyses.  As it relates  to  Pacific,  and in
conjunction  with the Retainer  Agreement,  SBB contacted  Advisory during April
1998 with the  request  that  Advisory  prepare a  preliminary  merger  analysis
reflecting  Pacific  merging with and into SBB assuming an unspecified  range of
exchange ratios (the "April 1998 Analysis").  Specifically,  Advisory  developed
stand-alone  financial  projections for both SBB and Pacific,  then analyzed the
changes  in  the  amount  of  earnings,   book  value  and  indicated  dividends
attributable  to one share of SBB Common  Stock  before the  proposed  merger to
those attributable to SBB Common Stock as a result of the proposed merger at the
then assumed exchange ratios ("Pro Forma Impact  Analysis").  Advisory  provided
the April 1998 Analysis to SBB shortly after SBB's initial request. In early May
1998, SBB offered comments and input with regard to the April 1998 Analysis, and
requested that Advisory  analyze certain effects of the potential  merger of SBB
and Pacific,  assuming exchange ratios, among others, ranging between 1.80:1 and
2.10:1 (the "Early-May  1998  Analysis").  The Early-May 1998 Analysis,  for the
purpose  of  computing  the  Pro  Forma  Impact   Analysis,   assumed   one-time
merger-related transactions costs together with ongoing merger-related operating
costs  savings  ("Merger  Costs/Savings")   estimated,  with  consultation  from
Advisory, by the management of SBB.

         In  late  May  1998,  as a  result  of  SBB's  conversations  with  the
management  and staff of  Pacific,  SBB  provided  Advisory  with  revised  data
regarding more specific  anticipated Merger Costs/Savings that might result from
SBB's potential merger with Pacific.  In turn,  Advisory  prepared a preliminary
merger  analysis  reflecting  Pacific  merging  with and into SBB assuming a new
range of exchange  ratios (the "Late-May 1998  Analysis").  In its Late-May 1998
Analysis,  Advisory prepared Pro Forma Impact Analyses assuming exchange ratios,
among others,  ranging  between 1.75:1 and 2.05:1,  and assuming the revised and
more detailed Merger Costs/Savings. The Pro Forma Impact Analyses were updated a
number of times  throughout  the month of June  1998,  giving  consideration  to
alternative  exchange  ratios and  evaluating  the  potential  merger of SBB and
Pacific on a  fully-diluted  perspective  by basing the assumed number of common
shares  outstanding  for both SBB and Pacific under the  presumption  that stock
option holders at SBB and Pacific had exercised,  prior to the Effective Date of
the Merger, 100% of all stock options outstanding.

         Finally,  on July  16,  1998,  Advisory  prepared  a Pro  Forma  Impact
Analysis  reflecting  both the 1.935 Exchange Ratio and the then current revised
projections  regarding  anticipated Merger  Costs/Savings that might result from
SBB's  proposed  merger with Pacific (the "July 1998  Analysis").  The July 1998
Analysis and the  corresponding  Pro Forma Impact  Analysis  suggested  that for
1998, the projected year of closing,  SBB's earnings per share would be impacted
downward by 22.59%,  primarily  reflective  of the  one-time  transaction  costs
associated with consummating the Merger; thereafter, however, SBB's earnings per
share reflected annual  appreciation  ranging between 3.33% and 8.37% during the
period 1999-2009.  Furthermore, the July 1998 Analysis suggested that SBB's book
value per share  would  reflect  appreciation  ranging  between  0.45% and 5.85%
during the period 1999-2009. The July 1998 Analysis further assumed no change in
SBB's dividends per share on a post-Merger basis.


                                       35

<PAGE>
         Summary of Procedures & Analysis Related to Advisory  Fairness Opinion.
Regarding SBB, the Advisory  Fairness Opinion is based upon, among other things,
a review of: (i) audited consolidated  financial  statements,  on form 10-K, for
the year's ended  December 31, 1997,  1996, and 1995;  (ii) quarterly  financial
statements,  on Form 10-Q, for the 1997 and 1996 calendar quarters,  and for the
first two calendar quarters of 1998; (iii) consolidated financial statements, on
form F.R. Y-9C,  for the years ended December 31, 1997,  1996, and 1995, and for
the  six-month  period  ended June 30, 1998,  as filed with the Federal  Reserve
System;  (iv)  internally-generated  financial  statements  for the  eight-month
period ending August 31, 1998; (v) selected  equity research  reports  regarding
SBB prepared by various analysts who cover the financial institutions sector for
market makers of SBB Common Stock; (vi) certain internal  financial analyses and
forecasts for SBB prepared by the  management of SBB,  including  projections of
future  performance;  (vii) certain  other  summary  materials and analyses with
respect to SBB's loan  portfolio,  securities  portfolio,  deposit  base,  fixed
assets, and operations including, but not limited to: (a) schedules of loans and
other  assets  identified  by  management  as  deserving  special  attention  or
monitoring  given the  characteristics  of the loan/asset and the local economy,
(b) analyses concerning the adequacy of the loan loss reserve,  (c) schedules of
"other  real  estate  owned,"  including  current  carrying  values  and  recent
appraisals,  and (d)  schedules of  securities,  detailing  book values,  market
values, and lengths to maturity; (viii) certain  publicly-available  information
concerning  the trading of, and the trading  market for, SBB Common Stock;  (ix)
the  condition of the  commercial  banking  industry,  as indicated in financial
reports filed with various Federal bank regulatory  authorities by all federally
insured commercial banks; and, (x) such other information -- including financial
studies,  analyses,  investigations,  and economic  and market  criteria -- that
Advisory deemed relevant.

         Regarding  Pacific,  the Advisory Fairness Opinion is based upon, among
other things, a review of: (i) audited  consolidated  financial  statements,  on
Form 10-K, for the years ended December 31, 1997, 1996, and 1995; (ii) quarterly
financial statements, on Form 10-Q, for the 1997 and 1996 calendar quarters, and
for the  first two  calendar  quarters  of 1998;  (iii)  consolidated  financial
statements,  on form F.R. Y-9C, for the years ended December 31, 1997, 1996, and
1995,  and for the  six-month  period  ended  June 30,  1998,  as filed with the
Federal Reserve System; (iv)  internally-generated  financial statements for the
eight-month  period ending August 31, 1998; (v) selected equity research reports
regarding   Pacific  prepared  by  various  analysts  who  cover  the  financial
institutions  sector for market  makers of Pacific  Common  Stock;  (vi) certain
internal financial analyses and forecasts for Pacific prepared  individually and
collectively  by the  management of SBB and Pacific,  including  projections  of
future  performance;  (vii) certain  other  summary  materials and analyses with
respect to Pacific's loan portfolio,  securities portfolio,  deposit base, fixed
assets, and operations including, but not limited to: (a) schedules of loans and
other  assets  identified  by  management  as  deserving  special  attention  or
monitoring  given the  characteristics  of the loan/asset and the local economy,
(b) analyses concerning the adequacy of the loan loss reserve,  (c) schedules of
"other  real  estate  owned,"  including  current  carrying  values  and  recent
appraisals,  and (d)  schedules of  securities,  detailing  book values,  market
values, and lengths to maturity; (viii) certain  publicly-available  information
concerning  the trading of, and the trading  market for,  Pacific  Common Stock;
(ix) the condition of the commercial banking industry, as indicated in financial
reports  filed  with  various  Federal  bank   regulatory   authorities  by  all
federally-insured commercial banks; and, (x) such other information -- including
financial studies, analyses, investigations, and economic and market criteria --
that Advisory deemed relevant.

         Additionally,  the Advisory Fairness Opinion is based upon, among other
things,  a review  of:  (i) the  Reorganization  Agreement,  and any  amendments
thereto,  that sets forth, among other items, the terms,  conditions to closing,
pending  litigation  against  both  SBB and  Pacific,  and  representations  and
warranties  of SBB and Pacific  with respect to the  proposed  Merger;  (ii) the
Joint Proxy  Statement/Prospectus,  in draft form; (iii) the financial terms and
price levels,  to the extent  publicly-available,  of selected  recent  business
combinations  of  companies  in  the  banking   industry  that  Advisory  deemed
comparable,  either  in whole or in part,  to the  Merger --  together  with the
financial  performance  and  condition of such banking  organizations;  (iv) the
price-to-equity  multiples,  price-to-earnings  multiples and trading volumes of
banking  organizations  based  in  the  United  States  -- and  specifically  in
California  -- that  have  publicly-traded  common  stocks,  together  with  the
financial performance and condition of such banking organizations, compared with
the price-to- equity multiples,  price-to-earnings multiples and trading volumes
for both SBB  Common  Stock  and  Pacific  Common  Stock;  and,  (v) such  other
information  --  including  financial  studies,  analyses,  investigations,  and
economic and market criteria -- that Advisory deemed relevant.

         In connection with its review, Advisory has relied upon the information
provided   by  the   management   of  both  SBB  and   Pacific,   or   otherwise
publicly-available  and reviewed by Advisory,  as being complete and accurate in
all material respects.  Advisory met with the management of both SBB and Pacific
for the purpose of discussing the relevant information that has been provided to
Advisory.
                                       36
<PAGE>
         Advisory has not  verified,  through  independent  inspection or direct
examination,  the  specific  assets  or  liabilities  of SBB,  Pacific  or their
subsidiary  banks.  Advisory has assumed that there has been no material changes
in the assets, financial condition, results of operations, or business prospects
of SBB  and  Pacific  since  the  date of the  last  financial  statements  made
available  to  Advisory.  Advisory  is not an expert in the  evaluation  of loan
portfolios  for purposes of assessing the adequacy of the  allowances for losses
with  respect  thereto,  and Advisory  assumed,  with SBB's  consent,  that such
allowances  for each of SBB and Pacific are in the  aggregate  adequate to cover
such losses. In addition,  Advisory did not assume  responsibility for reviewing
any individual credit files, or for making an independent evaluation,  appraisal
or  physical  inspection  of any of the  assets or  liabilities  (contingent  or
otherwise)  of  SBB or  Pacific,  nor  was  Advisory  furnished  with  any  such
appraisals.  Finally,  Advisory's  opinion was based on  economic,  monetary and
market and other  conditions  in effect as of the date of the Advisory  Fairness
Opinion.  Accordingly,  although  subsequent  developments may affect Advisory's
opinion,  Advisory has not assumed any obligation to update,  revise or reaffirm
such opinion.

         Advisory  relied on the advice of legal  counsel to SBB as to all legal
matters  with  respect  to SBB,  Pacific,  the  Merger  and  the  Reorganization
Agreement.  Advisory did not discuss with the independent accountants for either
SBB or Pacific any financial reporting matters with respect to SBB, Pacific, the
Merger or the  Reorganization  Agreement.  SBB informed  Advisory,  and Advisory
assumed,  that the Merger  would be recorded as a "pooling of  interests"  under
generally accepted accounting principles. Advisory assumed that the Merger would
be  consummated  in a manner that complies in all respects  with the  applicable
provisions  of the  Securities  Act, the  Exchange Act and all other  applicable
federal and state statutes, rules and regulations.

         With respect to the financial forecasts for SBB provided to Advisory by
SBB's  management,  the  financial  forecasts  for Pacific  derived by SBB, with
consultation  from  Advisory  and  management  of  Pacific,  and  the  forecasts
regarding  the impact of cost  savings on the  Surviving  Corporation,  Advisory
assumed for purposes of its opinion, and with SBB's consent,  that the forecasts
were reasonably prepared on bases reflecting the best available estimates at the
time of preparation as to the future  financial  performance of SBB, Pacific and
the Surviving Corporation,  and that they provided a reasonable basis upon which
Advisory could form its opinion.

         Set forth below is a brief  summary of the analyses used by Advisory in
drawings conclusions in connection with the Advisory Fairness Opinion.

         Analysis of Selected Merger Transactions.  Advisory maintains a sizable
database  of  information  pertaining  to the prices  paid for U.S.  banks.  The
database includes transactions  involving banking  organizations  throughout the
United States, and provides  comparable  pricing and financial  performance data
for banking organizations acquired in the United States since 1989. Advisory has
the capability of sorting the records by year or  combinations of years to yield
transactions involving similar banks.  Similarities might include banks within a
specific asset size range,  banks within a specific state or geographic  region,
banks that generate a return on average assets ("ROA") within a specified range,
banks that have an  equity-assets  ratio within a certain  range,  or banks that
sold for a  specific  form of  consideration  (cash or  stock).  The  ability to
produce  specific  groups  of  comparable  banks  facilitates   making  a  valid
comparative purchase price analysis.

         In deriving the comparable  pricing  analyses,  as described  below, it
should be recognized that no other single company or transaction is identical to
Pacific  or the  Merger.  Accordingly,  an  examination  of the  results  of the
following comparative analysis is not mathematical;  rather, it involves complex
considerations and judgments  concerning  differences in financial and operating
characteristics  of the companies as well as other factors that could affect the
public  trading value and the announced  acquisition  prices of the companies to
which Pacific and the Merger are being compared.

         Price Multiples and Price Indices.  Advisory considered the transaction
values for  profitable  banking  organizations  with total  assets  between $500
million and $1 billion acquired in the United States during 1997 and thus far in
1998,  with 100% common stock as the form of  consideration,  and for which both
price  data and  related  financial  information  are  publicly  available  (the
"National Bank  Mergers").  Advisory  compared the average of those  transaction
values, and the corresponding  average of the financial  characteristics for the
National Bank Mergers,  in relation to the  transaction  value  attributable  to
Pacific in connection with the Merger.  The comparative  analysis  revealed that
the  merger of Pacific  with SBB yields a  transaction  value for  Pacific  that
results in a  price-equity  index  [(purchase  price / equity) x (equity / total
assets)] of 32.84, an index 25.6% higher than the 26.15 average for the National
Bank Mergers.  Likewise, the price-earnings index [(purchase price / earnings) x
(earnings / average  assets)] for Pacific  equals  35.83,  an index 29.1% higher
than the 27.75 average for the National Bank Mergers.

                                       37
<PAGE>



         The equity  ratio for  Pacific  (as  measured  by the  equity-to-assets
ratio)  as of June 30,  1998  equals  9.31%,  a ratio 53 basis  points  and 6.0%
greater than the average  equity ratio of 8.78% for the National  Bank  Mergers.
Furthermore, the 12-month trailing ROA for Pacific equals 1.46%, a ratio that is
29 basis points and 24.8% greater than the average ROA of 1.17% for the National
Bank Mergers;  and, the 12-month  trailing  return on average equity ("ROE") for
Pacific equals 15.19%,  a ratio that is 193 basis points and 14.56% greater than
the  average  ROE  of  13.26%  for  the  National  Bank  Mergers.   When  giving
consideration to the superior financial  condition and performance of Pacific in
relation the National Bank Mergers,  the analysis  suggests that the transaction
value  for  Pacific,  as  measured  by the price  indices  described  above,  is
reasonable and defensible  when compared with the price indices for the National
Bank Mergers.  The table set forth below summarizes this  comparative  analysis,
and highlights the Pacific transaction.


<TABLE>
<CAPTION>
<S>                        <C>      <C>         <C>      <C>        <C>         <C>       <C>        <C>         <C>       <C>
     
                                                                                           Price Multiples      Price Indices    
                                                                                        ------------------------------------------
                        # of     Assets   Equity-to-
                       Banks      $(MM)     Assets       ROA        ROE    Total Price   Equity    Earnings   Equity    Earnings
                       -----     ------   ----------     ---        ---    -----------   ------    --------   ------    --------
Pacific*                     1       $816       9.31%     1.46%     15.19%      $268.0     3.53x      24.53x     32.84      35.83
National Bank Mergers       28       $649       8.78%     1.17%     13.26%      $169.6     2.98x      23.76x     26.15      27.75
- --------------
<FN>

*        Total price for Pacific  based on the issuance of  8,309,670  shares of
         SBB Common Stock,  and a $32.25  closing price per share as of July 17,
         1998.  Financial data for Pacific is as of June 30, 1998, with earnings
         based on 12-month trailing earnings.
</FN>
</TABLE>

         Common Stock Indexed Price  Multiples.  Advisory  also  considered  the
transaction  values for  profitable  banking  organizations  with  total  assets
between  $500 million and $2 billion  acquired in the United  States since 1994,
with 100% common  stock as the form of  consideration,  and for which both price
data and related  financial  information  are publicly  available (the "National
Peer Group");  however, for the National Peer Group, Advisory compared the price
multiples  calculated  for each  transaction  value at the date of  announcement
relative to the market  price  multiples  for the common  stock of the  relevant
acquiror  at  the  month-end   prior  to   announcement   date  ("Indexed  Price
Multiples").  Advisory then compared the average of the Indexed Price  Multiples
for the National Peer Group,  segmented by year of announcement,  in relation to
the Indexed Price Multiples  computed for the transaction value  attributable to
Pacific,  using the market price  multiple for SBB Common  Stock,  in connection
with the Merger.  This  comparative  analysis reveals that the merger of Pacific
with  SBB  yields  a   transaction   value  for  Pacific   that   results  in  a
price-to-equity  multiple of 3.53x, versus a 2.93x average for the National Peer
Group  thus far in 1998  (excluding  the  Merger)  and a 2.82x  average  for the
National Peer Group in 1997. However, when the 3.53x price-to-equity transaction
multiple  for the  Merger is  compared  relative  to the  3.88x  price-to-equity
multiple for SBB Common Stock, the transaction value equates to an Indexed Price
Multiple of 90.98,  versus a 99.32  average for the National Peer Group thus far
in 1998  (excluding the Merger) and a 107.18 average for the National Peer Group
in 1997. The  comparative  analysis also reveals that the merger of Pacific with
SBB yields a transaction  value for Pacific that results in a  price-to-earnings
multiple of 24.53x, versus a 26.13x average for the National Peer Group thus far
in 1998  (excluding the Merger) and a 21.79x average for the National Peer Group
in 1997. However, when the 24.53x price-to-earnings transaction multiple for the
Merger is compared  relative to the 21.94x  price-  to-equity  multiple  for SBB
Common Stock,  the  transaction  value  equates to an Indexed Price  Multiple of
111.80,  compared with an average of 111.86 for the National Peer Group thus far
in 1998  (excluding  the Merger) and an average of 116.63 for the National  Peer
Group in 1997.

         When giving  consideration  to the  superior  financial  condition  and
performance  of Pacific in relation the  National  Peer Group and when viewed in
terms of the Indexed Price Multiples described above, the analysis suggests that
the transaction  value for Pacific is reasonable and  defensible.  The table set
forth below summarizes the Indexed Price  Multiples,  and highlights the Pacific
transaction.


                                       38

<PAGE>
<TABLE>
<CAPTION>
<S>                          <C>    <C>         <C>       <C>        <C>        <C>       <C>         <C>       <C>        <C>

                                                                   Transaction Price       Acquiror Stock       Indexed Price
                                                                       Multiples       -     Multiples           Multiples** 
                                                                 -----------------------------------------------------------------
                           # of     Assets   Equity-to-
                           ----     ------   ----------
                          Banks      $(MM)     Assets      ROA      Equity     Earnings   Equity     Earnings   Equity    Earnings
                          -----      -----     ------      ---      ------     --------   ------     --------   ------    --------
Pacific*                     1       $816       9.31%     1.46%      3.53x      24.53x     3.88x      21.94x     90.98     111.80
National Peer Group - 1998  14       $837       9.38%     1.09%      2.93x      26.13x     2.95x      23.36x     99.32     111.86
National Peer Group - 1997  17       $800       8.85%     1.22%      2.82x      21.79x     2.63x      18.68x    107.18     116.63
National Peer Group - 1996  12       $934       9.12%     1.33%      2.31x      16.84x     1.93x      13.00x    119.84     129.55
National Peer Group - 1995  10     $1,157       8.99%     1.22%      1.90x      14.61x     1.66x      11.36x    114.52     128.55
National Peer Group - 1994  11       $883       8.52%     0.98%      2.03x      18.70x     1.64x      10.67x    123.53     175.23

<FN>
- --------------
*        Total price for Pacific  based on the issuance of  8,309,670  shares of
         SBB Common Stock,  and a $32.25  closing price per share as of July 17,
         1998.  Financial data for Pacific is as of June 30, 1998, with earnings
         based on 12-month trailing earnings.

**       Transaction Price Multiples as % of Acquiror Stock Multiples.
</FN>
</TABLE>

         Contribution  Analysis.  Advisory  analyzed the contribution of each of
SBB and Pacific to, among other things,  total tangible  common equity,  assets,
latest 12 months'  net income,  gross  loans and core  deposits of the pro forma
combined  companies  at or for the period  ended June 30,  1998.  This  analysis
showed,  among other things, that based on pro forma combined balance sheets for
SBB and  Pacific at June 30,  1998,  Pacific  would have  contributed  39.88% of
tangible  common equity,  33.50% of assets,  31.85% of total loans and 33.75% of
total deposits.  Pro forma income statements for the latest 12 months ended June
30, 1998 indicated that Pacific would have contributed  32.06% of the net income
of the pro forma  Surviving  Corporation  (before  the  inclusion  of any Merger
Costs/Savings).  Based upon the 1.935 Exchange Ratio and the resulting  issuance
of 8,364,399  additional shares of SBB Common Stock,  current holders of Pacific
Common  Stock  would  own  approximately  35.22% of SBB on a  post-Merger  basis
(without  giving  effect to the exercise of the Pacific Stock Options or options
to acquire shares of SBB Common Stock).

         Pro  Forma  Impact  Analysis.  Advisory  prepared  a Pro  Forma  Impact
Analysis  reflecting the 1.935 Exchange Ratio and the current estimate of Merger
Costs/Savings, as provided by SBB, that are projected to result from the Merger.
This Pro Forma Impact  Analysis  suggests that for 1998,  the projected  year of
closing,  SBB's  earnings  per  share  will  be  impacted  downward  by  _____%,
reflective of the one-time  transaction  costs associated with  consummating the
Merger;   thereafter,   however,   SBB's   earnings  per  share  reflect  annual
appreciation  ranging  between  _____% and _____%  during the period  1999-2009.
Furthermore,  the Pro Forma Impact  Analysis  suggests that SBB's book value per
share will reflect  appreciation  ranging  between  _____% and _____% during the
period  1999-2009.  The Pro Forma  Impact  Analysis  assumes  no change in SBB's
dividends per share on a post-Merger basis.

         The  summary  set  forth  above  does  not  purport  to  be a  complete
description of the analyses  performed by Advisory.  Advisory  believes that its
analyses and the summary set forth above must be  considered as a whole and that
selecting  a portion  of its  analyses  and  factors,  without  considering  all
analyses and factors,  would create an incomplete view of the process underlying
the analyses  used by Advisory.  In  addition,  Advisory may have given  various
analyses more or less weight than other  analyses,  and may have deemed  various
assumptions more or less probable than other assumptions,  so that the ranges of
valuations  resulting from any particular analysis described above should not be
taken to be  Advisory's  view of the actual value of Pacific or of the Surviving
Corporation.  The fact that any specific  analysis  has been  referred to in the
summary  above is not meant to indicate  that such  analysis  was given  greater
weight than any other analysis.

         In performing  its analyses,  Advisory made numerous  assumptions  with
respect to industry  performance,  general business and economic  conditions and
other matters, many of which are beyond the control of both SBB and Pacific. The
analyses  performed by Advisory are not necessarily  indicative of actual values
or actual future results, which may be significantly more or less favorable than
suggested by such  analyses.  Such analyses  were  prepared in  connection  with
Advisory's  determination  of the fairness of the financial terms of the Merger,
from a financial point  of view, to the  shareholders of SBB Common  Stock.  The

                                       39
<PAGE>



analyses  do not  purport to be  appraisals  or to reflect the prices at which a
company might  actually be sold or the prices at which any  securities may trade
at the  present  time or any  time in the  future.  The  forecasts  utilized  by
Advisory  in  certain  of its  analyses  are  based on  numerous  variables  and
assumptions which are inherently  unpredictable and,  therefore,  not certain to
become reality. Accordingly,  actual results could vary significantly from those
contemplated  in such  forecasts.  Advisory is of the belief that its review of,
among other things,  the aforementioned  items,  provides a reasonable basis for
the issuance of the Advisory  Fairness  Opinion,  recognizing  that  Advisory is
issuing an informed professional opinion -- not a certification of value.

         Pacific

         Pacific Capital  retained Van Kasper & Company  (defined herein as "Van
Kasper")  to render  financial  advisory  and  investment  banking  services  in
connection with the proposed merger of Pacific with SBB. Van Kasper has rendered
a written  opinion (the "Van Kasper  Fairness  Opinion") to the Pacific Board to
the  effect  that  the  financial  terms  of  the  Merger  as set  forth  in the
Reorganization Agreement,  including the Exchange Ratio, are fair to the holders
of Pacific  Common Stock from a financial  point of view.  No  limitations  were
imposed by the Pacific Board upon Van Kasper with respect to the  investigations
made or procedures followed in rendering the Van Kasper Fairness Opinion.

         The text of the Van Kasper  Fairness  Opinion,  dated as of __________,
1998, which set forth certain assumptions made, matters considered and limits on
the review  undertaken by Van Kasper,  is attached hereto as Appendix E. Pacific
shareholders  are  urged  to read  the  Fairness  Opinion  in its  entirety.  In
furnishing such Fairness Opinion, Van Kasper does not admit that it is an expert
with  respect  to  the   Registration   Statement  of  which  this  Joint  Proxy
Statement/Prospectus is part within the meaning of the term "experts" as used in
the Securities Act and the rules and regulations promulgated thereunder nor does
it admit that its opinion  constitutes a report or valuation  within the meaning
of section 11 of the Securities  Act. The summary of the procedures and analysis
performed,  and  assumptions  used by Van Kasper  set forth in this Joint  Proxy
Statement/Prospectus  is  qualified  in its entirety by reference to the text of
such Van Kasper Fairness Opinion. The Van Kasper Fairness Opinion is directed to
the Pacific  Board and is directed only to the  consideration  to be received by
holders  of  Pacific  Common  Stock in the  Merger  and does  not  constitute  a
recommendation to any Pacific shareholder as to how such shareholder should vote
at the Pacific Meeting.

         In arriving at its opinion, Van Kasper has reviewed and analyzed, among
other things, the following: (i) the Agreements; (ii) certain publicly available
financial and other data with respect to SBB and Pacific, including consolidated
financial  statements  for recent  years and interim  periods to June 30,  1998;
(iii)  certain  other  publicly   available   financial  and  other  information
concerning  Pacific and SBB and the  trading  markets  for the  publicly  traded
securities of Pacific and SBB; (iv) publicly  available  information  concerning
other banks and holding companies,  the trading markets for their securities and
the nature and terms of certain other merger  transactions  Van Kasper  believed
relevant to its inquiry; and (v) evaluations and analyses prepared and presented
to the Pacific Board or a committee  thereof in connection with the Merger.  Van
Kasper  has held  discussions  with  senior  management  of  Pacific  and of SBB
concerning their past and current operations, financial condition and prospects.

         Van Kasper  reviewed  with the senior  management  of Pacific  earnings
projections  for Pacific as a stand-alone  entity,  assuming the Merger does not
occur.  Van Kasper also reviewed  earnings  projections for SBB as a stand alone
entity,  assuming  the  Merger  does not  occur as well as  securities  industry
consensus  estimates of projected  earnings per share from published sources for
SBB as a stand-alone entity. Van Kasper also reviewed with the senior management
of Pacific  the  projected  operating  cost  savings  expected  by the  combined
companies  to be  achieved  in each  year  resulting  from the  Merger.  Certain
financial  projections  for the  combined  companies  and for Pacific and SBB as
stand-alone  entities  were  derived  by Van  Kasper  based  partially  upon the
projections  described  above, as well as Van Kasper's own assessment of general
economic, market and financial conditions.

         Van Kasper took into account its assessment of general economic, market
and financial  conditions and its experience in other  transactions,  as well as
its experience in securities valuation and its knowledge of the banking industry
generally.  Van Kasper  considered such financial and other factors as it deemed
appropriate  under  the  circumstances.  The Van  Kasper  Fairness  Opinion  was
necessarily based upon conditions as they existed and could only be evaluated on
the date thereof and the  information  made  available to Van Kasper through the
date thereof.

         In  conducting  its review and in arriving  at the Van Kasper  Fairness
Opinion, Van Kasper relied upon and assumed the accuracy and completeness of the
financial and other information provided to it or publicly available and did not


                                       40

<PAGE>
attempt independently to verify the same. Van Kasper relied on advice of counsel
and independent accountants as to all legal and financial reporting matters with
respect to SBB, Pacific,  the Merger and the Agreements.  Van Kasper relied upon
the management of Pacific and SBB as to the  reasonableness of the financial and
operating  forecasts,  projections  and projected  operating  cost savings.  Van
Kasper  also  assumed,  without  independent  verification,  that the  aggregate
allowances  for loan  losses for  Pacific  and SBB were  adequate  to cover such
losses.  Van Kasper did not make or obtain any  evaluations or appraisals of the
property  of Pacific or SBB,  nor did Van Kasper  examine  any  individual  loan
credit files. The Van Kasper Fairness Opinion is limited to the fairness, from a
financial point of view, to the shareholders of Pacific of the  consideration to
be  received  by the  holders of Pacific  Common  Stock in the Merger  which was
determined by arms length negotiations and does not address Pacific's underlying
decision to proceed with the Merger.

         In connection  with  rendering the Van Kasper  Fairness  Opinion to the
Pacific  Board,  Van Kasper  performed  certain  financial  analyses,  which are
summarized  below. The summary set forth below does not purport to be a complete
description  of the  presentation  by Van Kasper to the Pacific  Board or of the
analyses  performed by Van Kasper. Van Kasper believes that its analysis must be
considered  as a whole and that  selecting  portions  of such  analyses  and the
factors considered therein,  without considering all factors and analyses, could
create an incomplete  view of the analysis and the processes  underlying the Van
Kasper  Fairness  Opinion.  The  preparation of a fairness  opinion is a complex
process  involving  subjective  judgments and is not necessarily  susceptible to
partial  analysis  or summary  description.  In its  analysis,  Van Kasper  made
numerous assumptions with respect to industry performance, business and economic
conditions,  and other matters,  many of which are beyond the control of Pacific
and SBB. Any estimates  contained in Van Kasper's  analyses are not  necessarily
indicative of future results or values,  which may be significantly more or less
favorable than such  estimates.  Estimates of values of companies do not purport
to be appraisals or necessarily  reflect the prices at which  companies or their
securities may actually be sold. None of the financial analyses performed by Van
Kasper was assigned a greater significance by Van Kasper than any other.

         Neither  Pacific  nor  SBB  publicly  discloses   internal   management
financial  forecasts  and  projections  of the type  provided  to Van  Kasper in
connection  with  its  review  of  the  proposed  Merger.   Such  forecasts  and
projections  were  not  prepared  with a view  towards  public  disclosure.  The
forecasts,  projections,  and projected  operating cost savings  prepared by Van
Kasper were based on numerous  variables  and  assumptions  that are  inherently
uncertain,  including,  without limitation,  factors related to general economic
and market conditions. Accordingly, actual results could vary significantly from
those set forth in such forecasts and projections.

         Set forth below is a brief  summary of the  analysis  performed  by Van
Kasper in  reaching  the Van Kasper  Fairness  Opinion.  Van Kasper  assumed for
purposes of its opinion  that the Merger will be  accounted  for as a pooling of
interests transaction under generally accepted accounting principles. Van Kasper
used an Exchange Ratio of 1.935 shares of SBB Common Stock at time of closing or
$62.40 per share, based upon the July 17, 1998 closing price of $32.25 per share
of SBB Common Stock.  The analysis also focuses on core  financial and operating
projections and statistics that are not specifically  adjusted for non-recurring
charges, unless otherwise stated.

         Pro Forma Merger and  Contribution  Analysis.  Van Kasper  analyzed the
changes  in  the  amount  of  earnings,   book  value  and  indicated  dividends
attributable  to one share of Pacific  Common  Stock  before the Merger to those
attributable  to one share of Pacific  Common  Stock as a result of the proposed
Merger. The following  assumptions regarding earnings and dividends underlie the
pro forma results. The analysis assumes a dividend pay-out ratio consistent with
SBB's recent  historical  dividend  pay-out ratio. The analysis further assumes,
unless  otherwise  stated,  Merger-related  operating  cost  savings to be fully
realized  during  1999 and  assumes  the Merger is  completed  during the fourth
quarter of 1998. These projected operating cost savings represent  approximately
6% of the combined companies' projected non-interest expense on a pre-tax basis.
This level of projected  operating  cost savings,  expressed as a percent of the
combined  companies'  projected  non-interest  expense, is within a range of the
level of operating  cost  savings,  expressed  as a  percentage  of the combined
companies'  non-interest  expense,  achieved in similar transactions reviewed by
Van Kasper.  Van Kasper performed pro forma merger analyses  assuming the stated
earnings projections and the Merger-related projected operating cost savings. In
addition,  Van Kasper  analyzed  certain pro forma merger  scenarios in order to
assess the impact on Pacific of some levels of volatility in SBB's and Pacific's
projected  earnings  as well  as  volatility  of the  levels  of  Merger-related
projected  operating cost savings.  The impact on Pacific of volatility in SBB's
earnings was shown by calculating  pro forma results  assuming SBB's earnings as
projected,  as well as 75% and 125% of  SBB's  projected  earnings.  In order to
measure the impact on Pacific of  volatility  of  Pacific's  earnings to the pro
forma results, Van Kasper also examined the earnings impact on Pacific resulting
at  those  levels  of SBB  earnings  if  Pacific  achieved  75% and  125% of its
projected  earnings.  The  impact  on  Pacific  of  volatility  in the  level of
Merger-related  projected  operating  cost  savings was shown by calculating pro

                                       41
<PAGE>



forma results  assuming  cost savings as  projected,  as well as 125% and 75% of
projected  cost  savings.  Van Kasper  analyzed the changes in earnings and book
value for the years 1999,  2000 and 2001 resulting from various  combinations of
the  stand-alone and pro forma  projected  earnings and cost savings  volatility
assumptions  described  above.  The  analyses  showed that for the year 1999 the
change in earnings per share ranged from 15.77% to 29.05% and the change in book
value per share ranged from -9.91% to -10.93%. For the year 2000 the increase in
earnings per share ranged from 15.25% to 37.60% and the change in book value per
share ranged from -6.23% to -8.89%. For the year 2001 the change in earnings per
share ranged from 14.74% to 46.71% and the change in book value per share ranged
from -1.66% to -6.60%.

         Analysis of Other Merger  Transactions.  Van Kasper analyzed other 1998
bank merger and  acquisition  transactions  where the  announced  deal value was
greater than $100 million and less than $500 million. The transactions  analyzed
were:  First American  Corporation and Pioneer  Bancshares,  a private  investor
group and  East-West  Bank,  Mercantile  Bancorp  and First  Financial  Bancorp,
BancFirst  Corp.  and AmQuest  Financial  Corp.,  Old Kent  Financial  and First
Evergreen Corp, Western Bancorp and Bank of Los Angeles,  Mercantile Bancorp and
Financial Services Corporation of the Mid-West,  Union Planters Corp. and AMBANC
Corp., St Paul Bancorp and Beverly Bancorp, Union Planters Corp and Transflorida
Bank,  First  Security Corp and  California  State Bank,  SouthTrust  Corp.  and
American Banks of Florida,  Cullen/Frost  Bankers,  Inc. and Overton Bancshares,
Premier  Bancshares  and Button  Gwinnett  Financial,  Union  Planters  Corp and
Merchants  Bancshares,  First Midwest Bancorp and Heritage  Financial  Services,
Regions Financial and Etowah Bank, Mercantile Bancorp and CBT Corp.

         This analysis showed that the Exchange Ratio represented a multiple of:
(i) 3.65x Pacific's  tangible book value compared to a high multiple of 5.59x, a
median  multiple  of  2.94x  and a low  multiple  of  1.86x  for the  comparable
transactions;  (ii) 25.68x  Pacific's  latest twelve months' earnings per share,
compared to a high multiple of 31.25x,  a median  multiple of 24.15x,  and a low
multiple of 16.63x for the  comparable  transactions.  Van Kasper  noted that no
transaction  reviewed  was  identical  to the Merger and that,  accordingly  any
analysis of comparable transactions  necessarily involves complex considerations
and judgements concerning differences in financial and operating characteristics
of the parties to the transactions being compared.

         Discounted  Cash Flow  Analysis.  Van Kasper  examined the results of a
discounted  cash flow  analysis  designed to compare the  present  value,  under
certain  assumptions,  that would be  attained if Pacific  remained  independent
through 2002 or was acquired in 2002 by a larger financial institution, with the
present value of the combined institutions at the Exchange Ratio as described in
the  Reorganization  Agreement.  The results  produced in the  analysis  did not
purport to be indicative  of actual values or expected  values of Pacific or the
shares of Pacific Common Stock. All cases were analyzed assuming  realization of
the  operating  cost  savings,  in  the  amounts  and  time  periods  previously
indicated,  unless  otherwise  stated  (see Pro Forma  Merger  and  Contribution
Analysis).

         In calculating  the present  values  through the  discounted  cash flow
analysis,  Van Kasper  analyzed the effect of possible  earnings  volatility and
potential Merger-related  operating cost savings volatility,  among other items,
by assuming varying levels of projected  earnings for Pacific and SBB. The three
cases  examined  were:  Pacific  earnings  as  projected  and  SBB  earnings  as
projected;  Pacific earnings 75% of projected  earnings and SBB earnings 125% of
projected  earnings;  and Pacific  earnings  125% of projected  earnings and SBB
earnings  75%  of  projected  earnings.  Pro  forma  combined  cash  flows  were
calculated  assuming the  combinations of the cash flows in each of these cases,
and were compared to the cash flows of Pacific on a stand-alone basis as well as
to the cash flows of Pacific acquired in 2002 by a larger financial institution.

         The  discount  rates used  ranged  from 8.0% to 12.0%.  For the Pacific
stand-alone  analyses,  the terminal price  multiples  applied to 2002 estimated
earnings  per share  ranged  from  16.00x  to  23.00x.  The lower  levels of the
price-to-earnings  per share  multiples  range  reflected  an  estimated  future
trading range of Pacific,  while the higher levels of the  price-to-earnings per
share  multiples were more  indicative of a future sale of Pacific's  stock to a
larger financial institution.  For the pro forma combined analyses, the terminal
price-to-earnings per share multiples also ranged from 16.00x to 23.00x.

         For the Pacific stand-alone analyses,  the cash flows were comprised of
the  projected  stand alone  dividends per share in years 1998 through 2002 plus
the terminal  value of Pacific's  Common Stock at year-end 2002  (calculated  by
applying each one of the assumed terminal  price-to-earnings per share multiples
as stated above to 2002 projected Pacific earnings per share). For the pro forma
combined  analyses,  the cash flows were  comprised of the  projected  pro forma
combined  dividends per share in years 1998 through 2002 plus the terminal value
of  the  pro  forma  combined  entity's  stock  at  year-end 2002 (calculated by

                                       42

<PAGE>



applying each one of the assumed terminal  price-to-earnings per share multiples
as stated above to 2002  projected pro forma combined  earnings per share).  Van
Kasper also calculated the present values that would be attained in each case if
75% or 125% of projected operating cost savings were realized.

         These analyses  showed a range of stand-alone  present values per share
for Pacific from $32.33 to $63.06,  as compared to a range of pro forma combined
present  values per share of $44.68 to $85.14.  These analyses do not purport to
be  indicative  of actual  values or  expected  values of the  shares of Pacific
Common  Stock.  Discounted  present  value  analysis is a widely used  valuation
methodology  that relies on numerous  assumptions,  including asset and earnings
growth rates,  dividend  pay-out rates,  terminal values and discount rates. The
analysis  showed that use of a higher  (lower)  level of projected  SBB earnings
raised  (lowered)  the  resulting  present  value for a given  level of  Pacific
earnings,  on a pro forma combined basis. The analysis also showed that use of a
lower (higher) discount rate or a higher (lower) terminal  price-to-earnings per
share multiple raised (lowered) the calculated present values.

         Comparative Analysis. Using publicly available information,  Van Kasper
compared certain financial and stock market information for Pacific and SBB to a
group of 35 public  Western  banks (the  "comparison  group").  Van Kasper  also
analyzed certain credit and operating  statistics for Pacific and SBB, comparing
these  statistics to data for the comparison  group. The comparisons made are as
of or for the period  ending June 30, 1998 and are  summarized  in the following
table:

<TABLE>
<CAPTION>
<S>                                                       <C>                  <C>                   <C>  


                                                         Santa Barbara      Pacific Capital         Comparison
                                                            Bancorp             Bancorp           Group Average
                                                      ---------------------------------------------------------------

Market Capitalization                                      $442,300            $190,200              $126,200
Price to Tangible equity per share                            3.97x               2.58x                 2.84x
Price to Earnings                                            18.43x              17.19x                18.67x
Total Equity to Total Assets                                  7.90%               9.33%                 9.37%
Loans to deposits                                            65.45%              60.06%                70.50%
Nonperforming assets to total assets                          0.54%               0.26%                 0.75%
Loan loss reserve to nonperforming loans                    274.38%             483.40%               295.71%
Net Interest Margin                                           5.47%               5.44%                 5.83%
Noninterest income to average assets                          1.81%               0.47%                 1.57%
Efficiency Ratio                                             59.39%              50.58%                60.89%
Return on assets                                              1.52%               1.46%                 1.43%
Return on equity                                             19.39%              15.09%                15.20%
</TABLE>

The  analysis  necessarily   involved  complex   considerations  and  judgements
concerning  differences  in  financial  and  operating  characteristics  of  the
comparable companies.

         Van Kasper is an  investment  banking firm  continually  engaged in the
valuation of businesses and securities,  including  financial  institutions  and
their  securities,  in  connection  with  mergers and  acquisitions,  negotiated
underwritings,   competitive    private   offerings  of  securities,   secondary
distributions  of listed and  unlisted  securities  and  valuations  for estate,
corporate and other purposes. In the ordinary course of its business, Van Kasper
may trade equity  securities  of SBB and Pacific for its own account and for the
accounts of  customers  and,  accordingly,  may at any time hold a long or short
position  in such  securities.  Van Kasper has  previously  provided  investment
banking services to Pacific.  Van Kasper has not previously  provided investment
banking services to SBB.

         Financial Advisory Fees

         SBB.  SBB's  Retainer  Agreement  with Advisory is renewed  annually on
August 1 for the consecutive 12-month period. The current Retainer Agreement was
renewed on August 1, 1998, and expires July 31, 1999.  Professional fees paid to
Advisory  by SBB  under  the  Retainer  Agreement,  together  with  supplemental
billings for specific  financial  advisory  services provided by Advisory to SBB
that  exceeded the scope of the Retainer  Agreement  ("Supplemental  Billings"),
totaled  $38,250  for the  period  August 1, 1997  through  July 31,  1998,  and
approximated  $74,700 for the period  August 1, 1996 through July 31, 1997.  SBB
also  reimbursed  Advisory  for  miscellaneous   out-of-pocket   expenses.   The
professional fees received by Advisory from SBB under the Retainer Agreement and
from Supplemental  Billings were  insignificant as compared to Advisory's annual
revenues.



                                       43

<PAGE>



         For Advisory's services as an independent financial analyst and advisor
to SBB in  connection  with  the  Merger,  SBB  has  agreed  to pay  Advisory  a
professional  fee  totaling  $295,000.  Additionally,  SBB  also has  agreed  to
reimburse  Advisory  for  reasonable  out-of-pocket  expenses.  Furthermore,  in
connection with the Merger, SBB has agreed to indemnify Advisory,  the officers,
directors,   employees,   and  shareholders  of  Advisory  and  assigns,  heirs,
beneficiaries and legal  representatives  of each indemnified entity and person.
No portion of Advisory's fee is contingent  upon the  conclusion  reached in the
Advisory Fairness Opinion.

         Advisory has not previously provided any services to Pacific and, thus,
has never received any professional fees from Pacific.

         Pacific. In consideration for the rendering of financial advice and for
the preparation and rendering of the Van Kasper  Fairness  Opinion,  Pacific has
agreed  to pay Van  Kasper a fee  equal  to  1.25%  to  1.35%  of the  aggregate
consideration  paid to the  shareholders  of  Pacific.  A portion of this fee is
payable upon signing of the Reorganization Agreement. Pacific has also agreed to
reimburse  Van Kasper for all  reasonable  out-of-pocket  expenses  which may be
incurred in connection with the rendering of the Van Kasper Fairness Opinion. No
portion of the fee is contingent upon the conclusions  reached in the Van Kasper
Fairness Opinion.

Exchange of Stock Certificates; Fractional Shares

         Pacific

         As soon as practicable  after the Effective Date, and in no event later
than three (3) business days  thereafter,  a form of transmittal  letter will be
mailed by the Exchange Agent for SBB to the holders of Pacific Common Stock. The
form of  transmittal  letter  will  contain  instructions  with  respect  to the
surrender of certificates  formerly  representing shares of Pacific Common Stock
(the "Pacific  Certificates")  and will specify that delivery shall be effected,
and risk of loss and title to such Pacific  Certificates  shall pass,  only upon
delivery of such Pacific Certificates to the Exchange Agent.

         CERTIFICATES  REPRESENTING SHARES OF PACIFIC COMMON STOCK SHOULD NOT BE
RETURNED  WITH THE  ENCLOSED  PROXY AND SHOULD NOT BE  FORWARDED TO THE EXCHANGE
AGENT UNLESS AND UNTIL THE PACIFIC SHAREHOLDER  RECEIVES A LETTER OF TRANSMITTAL
FOLLOWING THE EFFECTIVE DATE OF THE MERGER.

         Upon  proper  surrender  of a  Pacific  Certificate  for  exchange  and
cancellation to the Exchange Agent, together with a properly completed letter of
transmittal, the holder of such Pacific Certificate shall be entitled to receive
a  certificate  representing  that whole number of shares of SBB Common Stock to
which such holder is entitled  pursuant to the  Reorganization  Agreement  and a
check  representing  the amount of any  fractional  share  interest as described
herein.  In the  event  that a letter  of  transmittal  contains  an  error,  is
incomplete or is not accompanied by all appropriate Pacific  Certificates,  then
the  Exchange  Agent will  promptly  notify  the holder of the need for  further
information.

         Until  surrendered,  Pacific  Certificates  will be deemed (except with
respect to  dissenters'  rights) to  represent  the right to receive  the Merger
Consideration.  No  dividends  or  other  distributions  of any kind  which  are
declared  payable to the  shareholders  of record of the  Surviving  Corporation
after the Effective Date shall be paid to persons entitled to receive SBB Common
Stock in the Merger until such persons  surrender  their  Pacific  Certificates.
Upon surrender of such Pacific  Certificates,  the holder thereof shall be paid,
without interest,  any dividends or other  distributions with respect to the SBB
Common Stock as to which the record date and payment  date  occurred on or after
the Effective  Date and before the date of surrender.  Notwithstanding  any such
failure to  surrender  Pacific  Certificates,  for a period of ninety  (90) days
after the Closing Date,  holders of such Pacific  Certificates shall be entitled
to vote as shareholders of SBB Common Stock.

         Neither  the  Exchange  Agent,  Pacific  nor SBB will be  liable to any
former holder of Pacific Common Stock for any amount  delivered in good faith to
a public  official  pursuant to any applicable  abandoned  property,  escheat or
similar laws.

         If a  Pacific  Certificate  has been  lost,  stolen or  destroyed,  the
Exchange Agent will issue the consideration  properly payable in accordance with
the  Reorganization  Agreement upon receipt of  appropriate  evidence as to such
loss,  theft or  destruction,  appropriate  evidence as to the ownership of such
certificate by the claimant, and appropriate and customary indemnification.


                                       44

<PAGE>



         For a description  of the SBB Common  Stock,  which shall be the Common
Stock of the Surviving Corporation,  see "DESCRIPTION OF SBB CAPITAL STOCK". For
a description of the differences between the rights of the holders of SBB Common
Stock and Pacific Common Stock, see "COMPARISON OF SHAREHOLDER RIGHTS".

         Fractional Shares

         No  fractional  shares of SBB Common Stock will be issued to any holder
of Pacific Common Stock upon  consummation  of the Merger.  For each  fractional
share that would  otherwise be issued  (after  taking into account all shares of
Pacific Common Stock held by such holder),  the Surviving  Corporation  will pay
cash in an  amount  equal to such  fraction  multiplied  by the  average  of the
closing bid and asked  price of a share of SBB Common  Stock as quoted on Nasdaq
on the business day  immediately  preceding the Effective Date. No interest will
be paid on any cash in lieu of fractional shares.

         SBB

         Shares of SBB Common Stock issued and outstanding  immediately prior to
the Effective Time will remain issued and  outstanding  and be unaffected by the
Merger. Holders of such shares will not be required to exchange the certificates
representing  such shares or take any other action by reason of the consummation
of the Merger.

Share Adjustments

         If, prior to the Effective Date, the  outstanding  shares of SBB Common
Stock or Pacific Common Stock are changed into a different number of shares or a
different  class of  shares by  reason  of a  reorganization,  recapitalization,
reclassification,  stock  dividend,  stock split,  reverse stock split, or other
similar  change in  capitalization  (a "Share  Adjustment"),  then the number of
shares of SBB Common  Stock into which a share of Pacific  Common  Stock will be
converted pursuant to the Reorganization Agreement and the Merger Agreement will
be  appropriately  and  proportionately  adjusted  so that each  shareholder  of
Pacific will be entitled to receive such number of shares of SBB Common Stock as
such shareholder  would have received  pursuant to such Share Adjustment had the
record date  therefor  been  immediately  following  the  Effective  Date of the
Merger.

Effective Date

         The Agreements provide that the Merger will be effective on the date of
filing  with  the  California  Secretary  of  State  of a duly  executed  Merger
Agreement and officers' certificates  prescribed by Section 1103 of the GCL (the
"Effective  Date").  The time at which such materials are accepted for filing on
the Effective Date is referred to herein as the "Effective  Time."  Although the
parties have not adopted any formal timetable,  it is presently anticipated that
the  Effective  Date of the Merger will be December 31,  1998,  assuming all the
conditions set forth in the Reorganization  Agreement are theretofore  satisfied
or waived. There can be no assurance,  however, that this timetable will be met,
and it is possible that the Effective Date may extend beyond such date.

Regulatory Approvals

         The Merger is subject to approval by the Federal Reserve Board pursuant
to Section 3 of the BHC Act. SBB agreed in the  Reorganization  Agreement to use
its best efforts to obtain such regulatory approval at the earliest  practicable
date.  On  September  ___,  1998,  SBB filed the required  application  with the
Federal  Reserve Board for approval of the Merger.  The application is currently
pending.  Assuming  Federal  Reserve  Board  approval,  the  Merger  may  not be
consummated until 30 days after such approval,  during which time the Department
of  Justice  may  challenge  the  Merger  on  antitrust  grounds  and  seek  the
divestiture of certain assets and liabilities.  With the approval of the Federal
Reserve Board and the  Department of Justice,  the waiting period may be reduced
to no less than 15 days.

         The Federal  Reserve Board is prohibited from approving any transaction
under the BHC Act which:

                  (i)  would   result  in  a  monopoly  or  which  would  be  in
         furtherance  of any  combination  or  conspiracy  to  monopolize  or to
         attempt to monopolize the business of banking in any part of the United
         States; or



                                       45

<PAGE>
                  (ii) may have the effect in any  section of the United  States
         of  substantially  lessening  competition,   or  tending  to  create  a
         monopoly,  or  resulting  in a restraint  of trade,  unless the Federal
         Reserve   Board  finds  that  the   anti-competitive   effects  of  the
         transaction  are  clearly  outweighed  in the  public  interest  by the
         probable effect of the transaction in meeting the convenience and needs
         of the communities to be served.

         In addition,  in reviewing a transaction under the applicable statutes,
the Federal  Reserve Board will consider the financial and managerial  resources
of the companies and their subsidiary banks and the convenience and needs of the
communities to be served.  As part of, or in addition to,  consideration  of the
above factors,  it is anticipated  that the Federal  Reserve Board will consider
the  regulatory  status  of SBB and  Pacific,  current  and  projected  economic
conditions  in  Central  California  and the  overall  capital  and  safety  and
soundness  standards  established by the Federal Deposit  Insurance  Corporation
Improvement Act of 1991 and the regulations promulgated thereunder.

         In addition,  under the Community  Reinvestment Act of 1977, as amended
(the  "CRA"),  the Federal  Reserve  Board must take into  account the record of
performance of each of SBB and Pacific in meeting the credit needs of the entire
community,  including  low- and  moderate-income  neighborhoods,  served by each
company.  As of the date of this Joint  Proxy  Statement/Prospectus,  SBB's sole
banking  subsidiary,  SBB&T,  has a  "Satisfactory"  CRA rating with the Federal
Reserve Bank of San Francisco,  and each of Pacific's banking subsidiaries has a
"Satisfactory"  CRA  rating  with the OCC.  None of SBB's or  Pacific's  banking
subsidiaries   received  any  negative  comments  from  its  respective  Federal
regulator  in its last CRA  examination  relating  to such  ratings  which  were
material and remain unresolved.

         The  Federal  Reserve  Board  will  furnish  notice  and a copy  of the
application for approval of the Merger to the OCC, the Federal Deposit Insurance
Corporation and the appropriate state regulatory authority.  These agencies have
30 days to submit their views and  recommendations to the Federal Reserve Board.
The Federal  Reserve Board is required to hold a public  hearing in the event it
receives a written  recommendation of disapproval of the application from any of
these agencies within such 30-day period.  Furthermore,  the BHC Act and Federal
Reserve Board regulations  require publication of notice of, and the opportunity
for public  comment on, the  application  submitted  by SBB for  approval of the
Merger and  authorize  the  Federal  Reserve  Board to hold a public  hearing in
connection therewith if the Federal Reserve Board determines that such a hearing
would be  appropriate.  Any such hearing or comments  provided by third  parties
could  prolong the period during which the  application  is subject to review by
the Federal Reserve Board.

         As noted above,  the Merger may not be consummated  until 30 days after
Federal Reserve Board approval,  during which time the Department of Justice may
challenge the Merger on antitrust  grounds and seek the  divestiture  of certain
assets and  liabilities.  With the approval of the Federal Reserve Board and the
Department  of  Justice,  the  waiting  period may be reduced to no less than 15
days. The commencement of an antitrust action by the Department of Justice would
stay the  effectiveness  of the  Federal  Reserve  Board  approval of the Merger
unless a court  specifically  orders  otherwise.  In reviewing  the Merger,  the
Department  of  Justice  could  analyze  the  Merger's   effect  on  competition
differently  than the Federal  Reserve  Board,  and thus it is possible that the
Department  of Justice  could  reach a  different  conclusion  than the  Federal
Reserve  Board  regarding  the  Merger's  competitive  effects.  Failure  of the
Department  of Justice to object to the  Merger  may not  prevent  the filing of
antitrust actions by private persons or state attorneys general.

         In general,  the Federal  Reserve  Board and the  Department of Justice
will  examine  the impact of the Merger on  competition  in various  product and
geographic  markets,  including  competition for deposits and loans,  especially
loans to small- and middle-market businesses.

         SBB's and Pacific's rights to exercise their  respective  options under
the Stock  Option  Agreements  are also  subject  to the prior  approval  of the
Federal  Reserve  Board,  to the extent that the  exercise  of their  respective
options under the Stock Option Agreements would result in SBB or Pacific, as the
case may be, owning more than 5% of the outstanding shares of the Pacific Common
Stock or the SBB Common Stock,  respectively.  In considering whether to approve
SBB's or  Pacific's  right to exercise  its  respective  option,  including  its
respective  right to purchase more than 5% of the outstanding  shares of Pacific
Common Stock or SBB Common Stock,  as the case may be, the Federal Reserve Board
would  generally  apply  the  same  statutory  criteria  it  would  apply to its
consideration of approval of the Merger.

         The Merger  cannot  proceed in the absence of approval from the Federal
Reserve  Board.  There can be no  assurance  that  approval of the Merger by the
Federal  Reserve  Board will be  obtained,  and,  if  obtained,  there can be no
assurance as to the date of any such  approvals or the absence of any litigation
challenging  such  approval.  There  can  likewise  be  no  assurance  that  the
Department  of Justice  will not attempt to  challenge  the Merger on  antitrust
grounds or, if such a challenge is made, as to the result thereof.

                                       46
<PAGE>



         SBB and  Pacific  are not  aware  of any  other  material  governmental
approvals or actions that are required prior to the parties' consummation of the
Merger other than those described  above. It is presently  contemplated  that if
any such  additional  governmental  approvals  or  actions  are  required,  such
approvals or actions will be sought.  There can be no assurance,  however,  that
any such additional approvals or actions will be obtained.

Representations and Warranties

         The  Reorganization  Agreement  contains  various  representations  and
warranties of SBB and Pacific.  These include  representations and warranties as
to, among other  things,  (i) the corporate  organization  and existence of each
party and its respective subsidiaries; (ii) the corporate power and authority of
each party to enter into the Agreements;  (iii) the capitalization of each party
and its respective  subsidiaries;  (iv) each party's  compliance with applicable
law;  (v) each party's  financial  statements;  (vi) the absence of  undisclosed
liabilities;   (vii)  the  absence  of  material   legal   proceedings;   (viii)
governmental and third-party consents and approvals; (ix) title to and condition
of assets;  (x) the absence of material defaults under certain  contracts;  (xi)
the absence of certain changes in each party's business since December 31, 1997;
(xii) leases,  contracts and agreements;  (xiii) the filing and accuracy of each
party's tax returns;  (xiv)  adequacy of insurance;  (xv)  ownership of patents,
trademarks and copyrights;  (xvi)  environmental  compliance;  (xvii) the timely
filing of regulatory  reports and  regulatory  compliance;  (xviii)  timeliness,
accuracy and  completeness  of filings  made by each party with the  Commission;
(xix)  accuracy of  information  provided by the parties for  inclusion  in this
Joint  Proxy  Statement/Prospectus;   (xx)  "pooling  of  interests"  accounting
treatment;  (xxi)  maintenance of corporate  books and records;  (xxii) employee
relationships;  (xxiii) each parties employee benefit plans and related matters;
(xxiv)  interest rate risk  management  instruments;  and (xxv)  compliance with
regulatory interagency guidances regarding the year 2000 computer issue.

Conduct of Business Pending the Merger and Certain Other Agreements

         Best Efforts and Business in Ordinary Course

         The parties have agreed to use their respective best efforts to perform
and fulfill all of their  respective  conditions and obligations to be performed
or fulfilled  pursuant to the terms of the Reorganization  Agreement,  including
obtaining  all  consents  and  approvals  from third  parties,  and to cause the
consummation  of the Merger in accordance  with the terms of the  Reorganization
Agreement at the earliest  practicable time. In addition,  each party has agreed
to, and will use its respective best efforts to cause its directors and officers
to, use all commercially reasonable efforts to consummate the Merger in a manner
that will qualify the Merger for "pooling of  interests"  accounting  treatment.
See "THE MERGER --  Accounting  Treatment."  The parties have also agreed to use
their  respective  best efforts to have each of its directors vote, or caused to
be voted,  all shares of SBB Common Stock or Pacific  Common Stock,  as the case
may be, beneficially owned by them in favor of the Merger.

         In addition,  during the pendency of the transactions described in this
Joint Proxy  Statement/Prospectus,  SBB and Pacific  have each agreed to, and as
applicable to cause their respective  subsidiaries  to, among other things,  (i)
operate only in the  ordinary  course of business  and  consistent  with prudent
banking  practices;  (ii) use all  reasonable  efforts to preserve  its business
organization  intact and to retain present  customers,  depositors and employees
and to maintain its assets in good  operating  condition  and repair  (except as
required  by  prudent  business  practices);  (iii)  perform  obligations  under
contracts,  leases and documents relating to or affecting its assets, properties
and business  (except such  obligations  as may be  reasonably  disputed);  (iv)
maintain  insurance  policies  now in effect or renewals  thereof;  (v) file all
reports  required  to be filed with  governmental  authorities  and  observe and
conform to applicable laws, rules and regulations (except as may be contested in
good faith by  appropriate  proceedings);  (v) timely  file tax  returns and pay
taxes and assessments that become due and payable (except as may be contested in
good faith by appropriate proceedings);  (vi) withhold appropriate payroll taxes
and to pay the same to proper tax receiving officers;  and (vii) account for all
transactions  and prepare  financial  statements  in accordance  with  generally
accepted   accounting   principles   (unless  otherwise  subject  to  regulatory
accounting principles).

         Each  party has also  agreed to refrain  from  taking  certain  actions
during the pendency of the Merger, without the prior consent of the other party,
including,  among  others,  (i)  taking  any action  that  would  reasonably  be
anticipated to result in a Material  Adverse  Change,  (ii) take any action that
would cause or permit the  representations  and warranties made by such party to
be inaccurate at the time of Closing; (iii) change the articles of incorporation
or bylaws (except with respect to SBB) or authorized  capital stock,  (iv) grant
any new stock options or accelerate  the vesting of any existing  stock options,
except as provided in the Reorganization  Agreement,  (v) accelerate the vesting
of pension or other benefits in favor of any employees, (vi) acquire any capital


                                       47

<PAGE>



stock or other equity securities or acquire any equity or ownership  interest in
any bank,  corporation,  partnership or other entity, (vii) mortgage,  pledge or
subject  to  lien or  charge,  or  grant  any  security  interest  or any  other
encumbrance or restriction on any of its property, business or assets, except in
the ordinary course of business and consistent  with prudent banking  practices,
(viii) sell, transfer, lease to others or otherwise dispose of any of its assets
or cancel or  compromise  any debt or claim,  or waive or  release  any right or
claim  of  material  value,  except  in the  ordinary  course  of  business  and
consistent  with past  practices and safe and sound banking  practices,  or (ix)
make any change in any  accounting  methods,  principles or material  practices,
except as required by generally accepted accounting principles.

         During  the   pendency  of  the   transactions   contemplated   by  the
Reorganization  Agreement,  each party is to promptly  notify the other upon the
occurrence  of certain  events  including (i) the filing or threat of litigation
that  questions  the validity of the  Agreements or seeks to enjoin or otherwise
restrain the transactions contemplated thereby or that would, in the event of an
unfavorable  outcome,  result in a Material  Adverse Change;  (ii) any change or
development  in the business,  financial  condition,  operations or prospects of
such party that results in, or may lead to a,  Material  Adverse  Change or that
would  adversely  affect,  prevent  or delay  the  obtaining  of any  regulatory
approval   necessary  to  consummate  the   transactions   contemplated  by  the
Reorganization Agreement; or (iii) awareness of any fact or condition that makes
untrue  in  any  material  respect  any   representation   or  warranty  in  the
Reorganization  Agreement or that results in such party's failure to comply with
any covenant, condition or agreement contained in the Reorganization Agreement.

         Environmental Inspections

         SBB and Pacific have each agreed to permit the other  party,  including
such other party's consultants, agents and representatives,  to perform asbestos
surveys  and  environmental  inspections  and testing  with  respect to all real
property  currently  owned  or  leased  by SBB or  Pacific,  as the case may be,
including  foreclosed  properties  and  properties  used  as  banking  premises,
including   all   improvements   and  fixtures   thereon   (the   "Environmental
Inspections").  Such  Environmental  Inspections  were conducted by September 3,
1998.  If  further  investigation  of certain  property  was  warranted  by such
Environmental  Inspections,  each party agreed to notify the other of its intent
to  perform  secondary  investigations  with  respect  to such  property,  which
secondary investigations were to have commenced on or before September 18, 1998.
Neither  party  notified  the  other of its  intent  to  perform  any  secondary
investigations  with respect to such  property  and,  accordingly,  no secondary
investigations will be performed.

         Upon the  occurrence of certain  events  relative to the  Environmental
Inspections,  each  party may have the  right to  terminate  the  Reorganization
Agreement.  See "THE MERGER -- Termination of the Reorganization  Agreement." As
of the date of this Joint Proxy Statement/Prospectus,  neither party is aware of
any environmental condition that would warrant termination of the Reorganization
Agreement.

         Director and Committee Meetings

         SBB and Pacific  have each agreed to permit two  representative  of the
other party (which  designees  shall be  consented to by the inviting  party) to
attend all  regular and  special  meetings  of the SBB Board and Pacific  Board,
respectively,  and to permit  such  persons to attend all  regular  and  special
meetings of any board or senior management  committee  thereof.  Notwithstanding
this invitation,  each of SBB and Pacific has reserved the right to exclude such
invitees  from  attending  any  portion  of any such  meeting  at any  time.  In
addition,  SBB and  Pacific  have  agreed to provide to the other  copies of the
minutes of all regular and special  meetings of the SBB Board and Pacific Board,
as applicable,  and minutes of all regular and special  meetings of any board or
senior  management  committee thereof (except for those portions of such minutes
which are devoted to the  discussion  of the  Agreements or the Merger or which,
upon the advise of counsel, are otherwise privileged).

         No Solicitation

         The Reorganization Agreement provides that, until the Effective Date or
the earlier termination of the Reorganization Agreement, neither SBB nor Pacific
will encourage, solicit or initiate discussions or negotiations with, or (except
upon the advise of counsel to the extent required to fulfill fiduciary duties of
the  directors  of SBB or Pacific)  entertain,  discuss or  negotiate  with,  or
provide any  information to, or cooperate  with, any  corporation,  partnership,
person or other entity or group (other than SBB or Pacific,  as the case may be)
concerning  any  acquisition  of all or a  substantial  portion of the business,
assets or stock of SBB or Pacific,  respectively.  Following  the receipt of any
unsolicited written offer, each party is required to promptly communicate to the


                                       48

<PAGE>



offer,  each party is required to  promptly  communicate  to the other party the
terms of any proposal or request for information.

         Other Agreements of SBB

         SBB has  agreed  to take all  action  necessary  to  effect  the  Bylaw
Amendment  prior to the  Effective  Date.  See "THE SBB MEETING -- Matters to be
Considered  -- The  Bylaw  Amendment."  SBB  has  also  agreed  that,  as of the
Effective  Date,  any  executive  officer or  director of Pacific who becomes an
officer or director of the Surviving  Corporation  (including  any  subsidiaries
thereof) shall be included in the director and officer  insurance  policy of the
Surviving  Corporation.  See "THE MERGER -- Interests of Certain  Persons in the
Merger."

         Other Agreements of Pacific

         Pacific has agreed  that,  prior to the Closing  Date,  it will use its
best efforts to cause certain identified employees of one of its subsidiaries to
enter into  agreements  not to compete  with the  Surviving  Corporation,  which
agreements  would become  effective on the  Effective  Date.  See "THE MERGER --
Interests of Certain Persons in the Merger." In addition,  Pacific has agreed to
make  available  to SBB,  from  time to time  and  upon  request,  a list of the
shareholders  of Pacific,  including  their  addresses,  and a list  showing all
transfers  of the Pacific  Common  Stock.  Pacific has also agreed to deliver to
SBB, at least 40 days prior to the Closing Date, a list  identifying each person
who may  reasonably be deemed to be an "affiliate" of Pacific within the meaning
of such term as used in Rule 145 under the Securities Act and to deliver to SBB,
not less than 31 days prior to the Closing  Date,  signed  agreements  from each
such  "affiliate"  regarding  certain  restrictions  on the resale of SBB Common
Stock received by each such "affiliate" in the Merger. See "THE MERGER -- Resale
of SBB Common Stock."

Certain Conditions to Consummation of the Merger

         Each  party's  obligation  to  effect  the  Merger  is  subject  to the
fulfillment or waiver, if legally permissible, of the following conditions prior
to or at the Closing:

                  (i) the  representations  and warranties of the other party to
         the Reorganization  Agreement (or in any document or schedule delivered
         to the other party pursuant to the  Reorganization  Agreement) shall be
         true and  correct  in all  material  respects  when  made and as of the
         Closing Date as though made on the Closing Date (except with respect to
         those representations and warranties specifically made as of an earlier
         date) (see "THE MERGER -- Representations and Warranties");

                  (ii) each  party  shall  have  performed  or  complied  in all
         material respect with all agreements,  terms,  covenants and conditions
         required by the  Reorganization  Agreement  to be performed or complied
         with prior to or at the Closing (see "THE MERGER -- Conduct of Business
         Pending the Merger and Certain Other Agreements");

                  (iii) the  holders  of at least a  majority  of the SBB Common
         Stock  and  the  Pacific   Common   Stock   entitled  to  vote  on  the
         Reorganization  Agreement,  the Merger  Agreement  and the Merger shall
         have approved the  Reorganization  Agreement,  the Merger Agreement and
         the  Merger,  and the  holders of at least a majority of the SBB Common
         Stock entitled to vote on the Bylaw  Amendment  shall have approved the
         Bylaw  Amendment  (see "THE SBB MEETING -- Vote Required to Approve the
         Merger",  "-- Vote Required to Approve the Bylaw  Amendment",  and "THE
         PACIFIC MEETING -- Vote Required to Approve the Merger");

                  (iv) each party shall have received approvals, acquiescence or
         consents,  all on  terms  and  conditions  mutually  acceptable  to the
         parties,  of the  transactions  contemplated by the Agreements from all
         necessary  governmental   agencies,   authorities  and  third  parties,
         including  the  Commission  and  the  Federal  Reserve  Board,  and all
         statutory  waiting  periods with respect to such  approvals  shall have
         expired (see "THE MERGER -- Regulatory Approvals");

                  (v) no action  shall have been taken,  and no  statute,  rule,
         regulation  or order  shall have been  promulgated,  enacted,  entered,
         enforced or deemed applicable to the  Reorganization  Agreement and the
         Merger by any  federal,  state or foreign  government  or  governmental
         authority  or by any court,  including  the entry of a  preliminary  or
         permanent injunction,  that would (a) make the Reorganization Agreement
         or  the  agreements  and  transactions  contemplated  thereby  illegal,


                                       49

<PAGE>



         invalid or unenforceable,  (b) require the  divestiture  of a  material
         portion of the assets of either party,  (c) impose  material  limits in
         the ability of either party to consummate  the  Merger,  (d)  otherwise
         result in a Material Adverse   Change  (as  defined   below),   or  (e)
         assuming consummation of  the Merger,  subject  any officer,  director,
         shareholder or employee of either party to criminal or civil liability;

                  (vi) each party shall have  delivered to the other the closing
         deliveries identified in the Reorganization Agreement;

                  (vii) each party shall have received, on or before the date of
         this Joint Proxy  Statement/Prospectus,  from its respective investment
         advisor an unqualified written opinion to the effect that the Merger is
         fair to the  shareholders  of such party from a financial point of view
         (see "THE MERGER -- Opinion of Financial Advisors");

                  (viii) the parties  shall have  received an opinion  from KPMG
         Peat Marwick LLP,  independent public  accountants for Pacific,  to the
         effect  that  Pacific  qualifies  as an entity that may be a party to a
         business  combination  for which the "pooling of  interests"  method of
         accounting  is  available,  the parties  shall have received an opinion
         from Arthur Andersen LLP,  independent  public  accountants for SBB, to
         the effect that the Merger  will  qualify  for  "pooling of  interests"
         accounting treatment, and there shall have been no determination by any
         court,  tribunal,  regulatory agency or other governmental entity, that
         the Merger  fails or will fail to qualify for  "pooling  of  interests"
         accounting treatment (see "THE MERGER -- Accounting Treatment");

                  (ix) the  Registration  Statement,  of which this Joint  Proxy
         Statement/Prospectus  forms a part,  shall have become  effective under
         the Securities Act, no stop order  suspending the  effectiveness of the
         Registration  Statement  shall  be in  effect  or  proceeding  for that
         purpose pending before or threatened by the  Commission,  and all state
         securities permits or approvals required by applicable state securities
         laws to  consummate  the Merger shall have been  received and remain in
         effect;

                  (x) SBB shall have received an opinion of Jenkens & Gilchrist,
         a  Professional  Corporation,  counsel to SBB,  and Pacific  shall have
         received a copy of such  opinion,  to the effect  that if the Merger is
         consummated   in   accordance   with  the   terms   set  forth  in  the
         Reorganization   Agreement   (a)   the   Merger   will   constitute   a
         reorganization within the meaning of Section 368(a) of the Code, (b) no
         gain or loss will be recognized  for federal income tax purposes by the
         holders of shares of Pacific  Common  Stock upon  receipt of the Merger
         Consideration  (except for cash received in lieu of fractional shares),
         (c)  the  basis  of  shares  of  SBB  Common  Stock   received  by  the
         shareholders  of  Pacific  will be the same as the  basis of  shares of
         Pacific Common Stock exchanged therefor,  and (d) the holding period of
         the shares of SBB  Common  Stock  received  by such  shareholders  will
         include  the  holding  period of the  shares of  Pacific  Common  Stock
         exchanged therefor, provided such shares were held as capital assets as
         of  the  Effective   Date  (see  "THE  MERGER  --  Federal  Income  Tax
         Considerations");

                  (xi) the holders of not more than a certain percentage (not to
         exceed  9.9%) of the issued and  outstanding  shares of Pacific  Common
         Stock shall have demanded or be entitled to demand  payment of the fair
         value of their  shares  as  dissenting  shareholders  under  applicable
         provisions  of the GCL,  such that the receipt of cash  pursuant to the
         exercise of such  appraisal  rights,  when combined with all other cash
         transactions   required  to  be  considered  under  generally  accepted
         accounting  principles,  would prevent the Merger from  qualifying as a
         "pooling of interests";

                  (xii)  all   accounting   and  tax   treatment,   entries  and
         adjustments in connection  with the  transactions  contemplated  by the
         Reorganization  Agreement  shall  be  reasonably  satisfactory  to each
         party,  and neither  party shall have  received  notification  from any
         proper  regulatory  authority  that  such  party's  accounting  and tax
         treatment,  entries and adjustments  used in connection with the Merger
         are  improper,  and neither  party shall have been required by any such
         regulatory  authority to make any  accounting or tax  adjustments  that
         would constitute a Material Adverse Change; and

                  (xiii) there shall have been no Material  Adverse  Change with
         respect to either party since December 31, 1997.



                                       50

<PAGE>



         The  obligation  of Pacific to effect the Merger is further  subject to
the  condition  that SBB shall have taken all  actions  necessary  to effect the
Bylaw Amendment.

         The  obligation  of SBB to effect the Merger is further  subject to the
condition  that SBB shall have received from Pacific,  at least 31 days prior to
the Closing Date, the signed letters from each "affiliate" of Pacific.  See "THE
MERGER -- Resale of SBB Common Stock."

         As used in the  Reorganization  Agreement,  the term "Material  Adverse
Change" means any material adverse change  (excluding the occurrence of expenses
in connection with the Merger) since December 31, 1997 in the business,  results
of  operations,   condition  (financial  or  otherwise),   assets,   properties,
liabilities (absolute, accrued, contingent or otherwise), reserves of Pacific or
SBB, as the case may be, and their respective subsidiaries taken as a whole, and
specifically includes,  without limitation,  with respect to Pacific, any change
that reduces the tangible shareholders' equity of Pacific below $70,000,000, or,
with respect to SBB, any change that reduces the tangible  shareholders'  equity
of SBB below $118,000,000.

         The  conditions  described in item (iii) and (iv) above (the receipt of
shareholder  and  regulatory  approvals)  may not be  waived  by  either  party.
Although  the  remaining  conditions  to effect  the Merger may be waived by the
party entitled to the benefit  thereof,  neither SBB or Pacific intends to waive
any such  conditions  except in those  circumstances  where the SBB Board or the
Pacific Board, as the case may be, deems such waiver to be in the best interests
of SBB or Pacific, as the case may be, and its respective shareholders.

         No  assurance  can be  provided  as to if or when all of the  foregoing
conditions  precedent to the Merger,  including receipt of regulatory  approvals
necessary  to  consummate  the  Merger,  will  be  satisfied  or  waived  (where
permissible)  by the party  permitted to do so. If the Merger is not effected on
or before  January 31, 1999 (or such later date as may be mutually  agreed to by
the parties),  the  Reorganization  Agreement may be terminated by either SBB or
Pacific. See "THE MERGER -- Termination of the Reorganization Agreement."

Termination of the Reorganization Agreement

         Termination or Abandonment

         The Reorganization  Agreement may be terminated,  and the Merger may be
abandoned,  at any time prior to the Effective  Date, upon the occurrence of one
or more of the following events:

         (a) by mutual written agreement between SBB and Pacific,  if a majority
of the members of each of the SBB Board and Pacific Board so determines;

         (b) by SBB or  Pacific,  if the  Effective  Date  has not  occurred  by
January 31,  1999,  or such later date as may be  mutually  agreed to by SBB and
Pacific;

         (c) by SBB or Pacific, if there has been a Material Adverse Change with
respect to the other;

         (d) by either  SBB or  Pacific,  if the other has  breached  any of its
respective covenants in the Reorganization Agreement in any material respect and
has failed to correct or cure any such breach  within  twenty (20) business days
after notice thereof is given by the nonbreaching party;

         (e) by either SBB or Pacific,  if any  representation or warranty given
or made by such other party in the  Reorganization  Agreement or in any schedule
or other document  delivered by such other party in accordance with the terms of
the  Reorganization  Agreement is or becomes untrue or incorrect in any material
respect and is not  corrected  within  twenty (20)  business  days after written
notice thereof is given by the party  terminating this Agreement,  provided that
any such notice shall be delivered promptly upon discovery of the breach;

         (f)  by  either  SBB  or  Pacific,  if  (i)  any  of  the  transactions
contemplated by the Agreements are disapproved by any regulatory authority whose
approval  is  required  to  consummate  such  transactions,  (ii)  any  court of
competent  jurisdiction  in the United States or other United States (federal or
state)  governmental body shall have issued an order,  decree or ruling or taken
any other action restraining,  enjoining,  invalidating or otherwise prohibiting
the Agreements or the transactions  contemplated thereby and such order, decree,
ruling or other action shall have  been final and nonappealable, or (iii) either

                                       51

<PAGE>

Pacific or SBB reasonably  determines,  in good faith and after  consulting with
counsel,  there is substantial likelihood that any necessary regulatory approval
will not be  obtained or will be obtained  only upon a condition  or  conditions
that make it inadvisable to proceed with the  transactions  contemplated  by the
Agreements;

         (g) by SBB or  Pacific, if the  Merger is not  approved by the required
vote of shareholders of Pacific or SBB;

         (h) by Pacific,  if (i) a proposal  for a Third Party  Transaction  (as
defined below) involving Pacific has been made or received and the Pacific Board
determines,  in the exercise of its good faith judgment (based on written advice
of independent legal counsel) that such termination is required in order for the
Pacific Board to comply with its fiduciary duties to Pacific's shareholders,  or
(ii) following  receipt by Pacific of a proposal for a Third Party  Transaction,
the Pacific  Board shall have altered its  determination  to recommend  that the
shareholders  of Pacific  approve the Agreements or shall have failed to proceed
to hold the Pacific Meeting. As used in the Reorganization Agreement, the phrase
"Third  Party  Transaction"  means (i) any tender offer for more than 50% of the
outstanding shares of Pacific,  (ii) any merger or consolidation of Pacific with
or into any entity other than SBB or an affiliate of SBB,  (iii) any sale of all
or  substantially  all of the  assets of  Pacific,  (iv) any  reorganization  of
Pacific or other  transaction  that results or when completed  would result in a
disposition of substantially all of the assets of Pacific,  or (v) the issuance,
sale or disposition of securities  representing  50% or more of the common stock
of Pacific;

         (i) by either SBB or Pacific,  if, by October 18, 1998 and with respect
to certain environmental matters regarding all real property of the other party,
(i)  the  results  of any  environmental  inspection  identifies  violations  or
potential  violations of  environmental  laws,  (ii) such other party refuses to
conduct  any   reasonably   necessary   environmental   inspection,   (iii)  any
environmental  inspection  identifies  any past or present  event,  condition or
circumstance  that  potentially  would require  remedial or cleanup  action that
would result in a Material  Adverse Change,  (iv) any  environmental  inspection
identifies the presence of any underground or above-ground  storage tank that is
not shown to be in compliance  with all  environmental  laws  applicable to such
tank either now or at a future  time,  or that has had a release of petroleum or
other  hazardous  material  that  has  not  been  properly  cleaned  up  to  the
satisfaction of the relevant  governmental  authority,  or (v) any environmental
inspection  reveals the presence of any  asbestos-containing  material in, on or
under any  property,  the  removal of which would  result in a Material  Adverse
Change;  provided,  however,  that,  in the event of any of the  foregoing,  the
violating  party shall have the  opportunity  to correct any such  violations or
conditions  to the  reasonable  satisfaction  of the other party by November 12,
1998.  In the  event  the  violating  party  fails to  demonstrate  satisfactory
correction of the  violations or  conditions,  the other party may terminate the
Reorganization Agreement on or before November 22, 1998;

         (j) by Pacific,  if the SBB Average  Price  should be less than $22.95;
provided,  however,  that if the SBB Average  Price  shall be less than  $22.95,
Pacific and SBB shall attempt in good faith to renegotiate  the Exchange  Ratio,
subject to existing market conditions. Should the parties fail to so renegotiate
the Exchange Ratio within three (3) business days after determination of the SBB
Average Price, Pacific may terminate the Reorganization Agreement.

         (k) by  Pacific,  if  Pacific  shall not have  received  the Van Kasper
Fairness Opinion, dated as of the date of this Joint Proxy Statement/Prospectus;
or

         (l) by SBB,  if SBB  shall  not have  received  the  Advisory  Fairness
Opinion, dated as of the date of this Joint Proxy Statement/Prospectus.

         Payment Upon Certain Events of Termination

         Generally,  SBB and Pacific have agreed to bear their  respective costs
and expenses  incurred in connection with the  consummation of the  transactions
contemplated by the Agreements. However, in certain events of termination of the
Reorganization  Agreement,  as described below,  each party has agreed to pay to
the other a  termination  fee and to  reimburse  the other for certain  fees and
expenses.

         Payment  by  Pacific.  In the event  the  Reorganization  Agreement  is
terminated by SBB because (i) the Merger is not approved by the required vote of
shareholders  at the Pacific  Meeting,  and (ii) the Pacific  Board  (subject to
compliance with its fiduciary duties as advised by counsel) shall have failed to
have used its best efforts to obtain shareholder approval,  Pacific shall pay to
SBB within ten (10)  business days after such  termination a fee of  $7,650,000,
plus the amount, not to exceed $250,000,  of all documented fees and expenses of
SBB related to the Agreements and the transactions contemplated thereby.


                                       52

<PAGE>



         Alternatively,  in the event the Reorganization Agreement is terminated
by Pacific because of a Third Party Transaction (See "THE MERGER--Termination of
the  Reorganization  Agreement"),  Pacific  shall  pay to SBB  within  ten  (10)
business days after such termination a fee of $7,650,000,  plus the amount,  not
to exceed  $250,000,  of all documented  fees and expenses of SBB related to the
Agreements and the transactions contemplated thereby.

         Payment by SBB. In the event the Reorganization Agreement is terminated
by  Pacific  because  (i) the Merger is not  approved  by the  required  vote of
shareholders  at the SBB Meeting,  and (ii) the SBB Board (subject to compliance
with its fiduciary  duties as advised by counsel) shall have failed to have used
its best efforts to obtain shareholder approval, SBB shall pay to Pacific within
ten (10) business days after such  termination a termination  fee of $7,650,000,
plus the amount, not to exceed $250,000,  of all documented fees and expenses of
Pacific related to the Agreements and the transactions contemplated thereby.

Effect of Merger on Employee Benefit and Stock Option Plans

         Employee Benefit Plans

         Pursuant to the Reorganization  Agreement, SBB has agreed, with respect
to each employee of Pacific or its subsidiaries who continues in employment with
the Surviving  Corporation or its  subsidiaries  following the Effective Date of
the Merger (each a "Continued Employee"),  to provide certain employee benefits.
Subject to the right of the Surviving  Corporation to subsequently amend, modify
or  terminate  any  benefit  plan,  and  subject to  eligibility  and  selection
criteria,  Continued  Employees  will be entitled to participate in the employee
benefit plans or programs of SBB in effect as of the date of the  Reorganization
Agreement (the "SBB Employee  Plans").  Continued  Employees will be eligible to
participate  in the SBB Employee  Plans on the same basis as similarly  situated
employees of SBB and its  subsidiaries.  Except with respect to certain  retiree
health plans currently maintained by SBB&T, the Surviving  Corporation will, for
purposes  of  vesting  and  any  age  or   period-of-service   requirements  for
commencement  of  participation  with respect to any such SBB Employee  Plans in
which Continued  Employees may participate,  credit each Continued Employee with
his or her term of service with Pacific and its subsidiaries.

         Stock Option Plans

         Each stock  option to purchase  shares of Pacific  Common Stock (each a
"Pacific Stock Option") granted under (i) the Pacific Capital Bancorp 1984 Stock
Option Plan,  (ii) the Pacific  Capital  Bancorp 1994 Stock Option Plan or (iii)
the Pacific Capital Bancorp 1991 Directors Stock Option Plan (collectively,  the
"Pacific Stock Option Plans") which is outstanding and  unexercised  immediately
prior to the Effective Time, whether or not exercisable,  will be assumed by SBB
and be converted  automatically  at the  Effective  Time into,  and will become,
stock options to purchase Common Stock of the Surviving Corporation (an "Assumed
Option"). In the case of a non-statutory Pacific Stock Option, (a) the number of
shares of Common  Stock of the  Surviving  Corporation  subject  to the  Assumed
Option  will be equal to the  product of the number of shares of Pacific  Common
Stock subject to the Pacific Stock Option and the Exchange Ratio, rounded to the
nearest one one-hundredth  share, and (b) the exercise price per share of Common
Stock of the Surviving  Corporation  subject to the Assumed Option will be equal
to the exercise  price per share of Pacific Common Stock under the Pacific Stock
Option divided by the Exchange Ratio,  rounded to the nearest one  one-hundredth
dollar.  In the case of a Pacific  Stock  Option  which is an  "incentive  stock
option" (as  defined in Section  422 of the Code),  the number of shares and the
exercise  price with respect to such Assumed  Options  shall be  determined in a
manner  consistent  with Section  424(a) of the Code.  Each Assumed  Option will
otherwise continue to be governed by the terms of the Pacific Stock Option Plans
(which  will be assumed by the  Surviving  Corporation)  pursuant  to which such
options were issued.

Interests of Certain Persons in the Merger

         Shareholders  should be aware that certain members of the Pacific Board
and  management of Pacific have  interests in the Merger that are in addition to
and separate from the interests of shareholders of Pacific generally. The Boards
of Directors of SBB and Pacific were aware of these  interests,  and  considered
them, among other matters, in approving the Reorganization Agreement, the Merger
Agreement  and the  transactions  contemplated  thereby,  including  the Merger.
Adoption and approval of the Reorganization  Agreement, the Merger Agreement and
the Merger by the shareholders of SBB and Pacific will also constitute  approval
of the  following  benefits  to be  received  by  certain  directors,  executive
officers and employees of Pacific and its subsidiaries.



                                       53

<PAGE>
         Pacific Employment Contracts

         Pacific has existing  employment  contracts  with four of its executive
officers:  Messrs.  D. Vernon Horton  (Chairman of the Board and Chief Executive
Officer), Clayton C. Larson (President and Chief Administrative Officer), Dennis
A. DeCius  (Executive  Vice President and Chief  Financial  Officer) and Dale R.
Diederick (Executive Vice President and Loan Administrator)  (collectively,  the
"Pacific  Executives").  Each of these employment  contracts was entered into on
August  26,  1997 for a  three-year  term to expire on August 25,  2000,  unless
earlier  terminated as provided in the  contract.   These  employment  contracts
provide  for annual  salary  and annual  discretionary  cash  bonuses  (based on
efforts and  performance) to be determined in the sole discretion of the Pacific
Board.

         In the event of a change in  control by merger or  purchase  of Pacific
into  or by  another  entity  (not  resulting  from  financial  difficulties  or
insolvency  of Pacific),  each of the Pacific  Executives  will receive  certain
payments  and benefits  (described  below),  regardless  of whether such Pacific
Executive  will continue as an executive  officer of the  Surviving  Corporation
following the Merger.  With respect to Messrs Horton and Larson,  such change in
control  benefits  include (i) a cash payment equal to 2.9 times the annual base
salary and bonus for the  average of the five years  immediately  preceding  the
effective  time of the  change in  control,  together  with any salary and bonus
earned to such date (such amount to be paid in a lump sum or in  installments as
directed by the  executive),  (ii) medical and life  insurance  coverage for two
years  from the date of the  change  in  control,  and  (iii) up to  $15,000  in
outplacement services. With respect to Messrs DeCius and Diederick,  such change
in control  benefits  include (i) a cash  payment  equal to 1.5 times the annual
base salary and bonus for the average of three years  immediately  preceding the
effective  time of the  change in  control,  together  with any salary and bonus
earned to such date (such amount to be paid in a lump sum or in  installments as
directed by the  executive),  (ii) medical and life  insurance  coverage for two
years  from the date of the  change  in  control,  and  (iii) up to  $15,000  in
outplacement  services.  Accordingly,  upon  consummation  of the Merger  (which
constitutes  a "change in  control"  as defined in the  Employment  Agreements),
estimated payments to such individuals  (exclusive of medical and life insurance
coverage  and  outplacement  service  payments)  are as  follows:  Mr.  Horton -
$982,669;  Mr.  Larson -  $966,336;  Mr.  DeCius -  $284,372;  Mr.  Diederick  -
$195,372.

         Additional  information with respect to these  employment  contracts is
incorporated  by  reference  to the 1997 Annual  Report on Form 10-K of Pacific,
which is  incorporated  herein by reference.  See  "INFORMATION  INCORPORATED BY
REFERENCE" and " AVAILABLE INFORMATION."

         It is not  anticipated  that SBB  will  enter  into any new  employment
contracts  with officers or other  employees of Pacific in  connection  with the
Merger.

         Salary Continuation Benefits Agreements

         The  Pacific  Executives  each have an Amended and  Restated  Executive
Salary Continuation Benefits Agreement with Pacific (each a "Salary Continuation
Agreement").  These Salary Continuation Agreements provide that if the executive
continues  to be employed by Pacific at least until such  executive  reaches age
65, the  executive may retire or continue to work past age 65. Upon such Pacific
Executive's retirement, Pacific will pay an annual amount of $125,000, $120,000,
$82,500  and  $60,000  to  Messrs.   Horton,   Larson,   DeCius  and  Diederick,
respectively,  payable  monthly  for a  period  of  180  months  following  such
retirement,  subject to certain  conditions  set forth in the  agreements.  Each
Pacific  Executive  may also elect to take  "early  retirement"  provided he has
reached age 55 and has completed 10 years of service.  If he so elects,  he will
receive  monthly  payments  determined  pursuant  to a formula  set forth in the
Salary  Continuation  Agreement for a period of 180 months.  Payments  under the
Salary Continuation  Agreements are in addition to any payments made pursuant to
the Employment Agreements described above.

         In the event of a change in  control  of  Pacific,  as  defined  in the
agreements,  the  Pacific  Executive  will be  entitled  to the full  retirement
benefits under the Executive Salary Continuation Agreement payable in the manner
described  above  commencing  on the first day of the first month  following the
effective date of the change in control.

         Pacific purchased single premium life insurance policies on each of the
Pacific Executives in  order to assist  in meeting  its  obligations  under  the
Executive Salary Continuation Agreements  and to indemnify Pacific against loss.
Pacific is currently named as owner and  beneficiary under each of the insurance
policies.

         Consummation  of the Merger  will  constitute  a "change in control" of
Pacific  as defined  in the  Executive  Salary  Continuation  Agreements.  It is
anticipated  that the  Surviving  Corporation  will  assume the  obligations  of
Pacific under  the Executive  Salary Continuation  Agreements to pay the Pacific

                                       54
<PAGE>



Executives as described above and will become owner and named beneficiary of the
insurance policies following consummation of the Merger.

         Agreements not to Compete

         As an  inducement  for SBB to enter into the  Reorganization  Agreement
with  Pacific,  Pacific  has  agreed to use its best  efforts  to cause  certain
persons associated with Pacific and/or South Valley to enter into agreements not
to compete with the Surviving  Corporation and its  subsidiaries for a period of
two years  beginning  on the  Effective  Date,  and to  deliver  any or all such
agreements  to SBB at the Closing.  The  individuals  identified by SBB to enter
into such  agreements  are Eugene R.  Guglielmo (a director of Pacific and South
Valley),  Mary Lou Rawitser (a director of Pacific and South Valley) and Brad L.
Smith  (President and Chief  Executive  Officer of South  Valley).  The proposed
agreements  generally  provide  that each such person  will not,  for a two-year
period,  (i)  solicit the  banking  business  of any  current  customer of First
National Bank or South Valley, (ii) acquire,  charter or operate, or serve as an
officer,  director  or agent for,  any  financial  institution  within a defined
geographic  area,  and (iii)  recruit,  hire or assist  others in  recruiting or
hiring,  any person who is, or within the last 12 months  was,  an  employee  of
Pacific,  First  National  Bank or South  Valley.  In  consideration  for  their
willingness to enter into such agreements not to compete,  SBB has agreed to pay
each of Mr.  Guglielmo and Ms. Rawitser $10,000 payable in cash upon delivery of
the signed  agreement at the Closing.  In  consideration  for his willingness to
enter into such  agreement not to compete,  SBB has agreed to extend Mr. Smith's
existing  employment  contract with South Valley for one additional year through
late 1999. Such agreements have not been finalized and may be subject to further
modification prior to the Closing.

         Board Composition

         Pursuant  to the  Agreements,  four (4)  current  directors  of Pacific
(Messrs  Vernon Horton,  Roger C. Knopf,  Clayton C. Larson and William H. Pope)
will be appointed  to the SBB Board to be  effective as of the first  meeting of
the Board of Directors of the Surviving Corporation following the Effective Date
of the Merger. See "THE MERGER -- Management and Operations After the Merger."

         SBB currently has a policy of paying  non-employee  directors an annual
retainer  fee of  $6,000  plus  $500 per  board  meeting  attended  and $250 per
committee  meeting  attended,  except for the  Executive  Committee and the Loan
Policy  and  Review  Committee.  Each  outside  director  who is a member of the
Executive  Committee is paid $1,000 per month and each member of the Loan Policy
and Review Committee is paid $400 per meeting.

         Messrs.  Knopf  and Pope will be  outside  directors  of the  Surviving
Corporation and will be eligible to receive the  compensation  described  above.
Since  Messrs.  Horton and Larson will be  executive  officers of the  Surviving
Corporation, they will not receive any additional compensation for their service
as members of the Board of Directors of the Surviving  Corporation.  Such policy
is subject to change in the future in the  discretion  of the Board of Directors
of the Surviving Corporation.

         Indemnification and Insurance

         The Reorganization  Agreement provides that, upon the Effective Date of
the Merger,  SBB will include any  executive  officer or director of Pacific who
becomes  an  officer  or  director  of SBB or any of its  subsidiaries  in SBB's
director and officer insurance policy. In addition, the Reorganization Agreement
provides that Pacific and its subsidiaries  shall have the authority to purchase
a rider to Pacific's  existing  policy of  directors'  and  officers'  liability
insurance providing for the continuation of coverage provided by such policy for
a period of 36 months  following  the  Effective  Date with  respect  to actions
occurring  prior to the  Effective  Date to the  extent  that such  coverage  is
obtainable for an aggregate premium not to exceed $125,000.

         Employment and Employee Benefits

         Pursuant to the  Reorganization Agreement, SBB  has  agreed to  provide
Continued Employees certain  employee  benefits.  See  "THE MERGER -- Effect  of
Merger on Employee Benefit and Stock Option Plans -- Employee Benefit Plans."



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<PAGE>



     Stock Option Plans

     The  Reorganization  Agreement  contains certain  provisions  regarding the
assumption by SBB, as the Surviving  Corporation  in the Merger,  of outstanding
Pacific  Stock  Options to  acquire  shares of Pacific  Common  Stock  which are
described under "MERGER -- Effect of Merger on Employee Benefit and Stock Option
Plans -- Stock Option  Plans."  Additional  information  with respect to Pacific
Stock Options  granted to directors and executive  officers of Pacific under the
Pacific  Stock  Option  Plans is  incorporated  by  reference to the 1997 Annual
Report on Form 10-K of Pacific,  which is incorporated herein by reference.  See
"INFORMATION INCORPORATED BY REFERENCE" and "AVAILABLE INFORMATION."

     Interests of SBB's Board and Management

     As of the Pacific  Record Date,  directors  and  executive  officers of SBB
beneficially owned 2,713 shares, or less than 1.0% of the outstanding shares, of
Pacific  Common Stock,  all of which shares are expected to be voted in favor of
the Merger.  Assuming  consummation of the Merger, such shares of Pacific Common
Stock owned by directors  and executive  officers of SBB will be converted  into
shares of SBB  Common  Stock in the same  manner as all other  shares of Pacific
Common Stock. Except for the foregoing, no member of the SBB Board or management
of SBB or any other affiliate of SBB has an interest in the Merger other than as
a shareholder of SBB or Pacific generally.

Management and Operations After the Merger

     As of the Effective  Date,  and assuming that the Bylaw  Amendment has been
approved by the  shareholders of SBB Common Stock at the SBB Meeting,  the Board
of  Directors  of  the  Surviving  Corporation  will  consist  of  fifteen  (15)
directors;  eleven (11) of whom  constitute all of the current  directors of SBB
and four (4) of whom are current  members of the Pacific Board.  Pursuant to the
terms  of the  Merger  Agreement,  the four  representatives  of  Pacific  to be
appointed  to the Board of Directors of the  Surviving  Corporation  will be: D.
Vernon Horton;  Roger C. Knopf;  Clayton C. Larson; and William H. Pope. Each of
Messrs. Horton, Knopf, Larson and Pope currently serve on the Pacific Board. Mr.
Horton is also the  Chairman  of Pacific,  and Mr.  Larson is the  President  of
Pacific.  Biographical  information  regarding each of the proposed directors of
the Surviving Corporation follows.

     DONALD M.  ANDERSON is  Chairman  of the Board of SBB and Vice  Chairman of
SBB&T.  Mr.  Anderson  joined  SBB&T  in  October  1969  as Vice  President  and
Commercial Lending Officer. He was elected President,  CEO and director of SBB&T
in 1971 and served in those  capacities  until elected  Chairman of the Board in
February  1989.  He  has  served  on  numerous  charitable,  civic  and  banking
organizations.

     FRANK BARRANCO,  M.D. is a director of SBB and SBB&T and has served in that
capacity  since 1989.  Dr.  Barranco is a retired  physician  and was a founding
director of the Community Bank of Santa Ynez Valley. Prior to his retirement, he
practiced  family medicine in Solvang and was a member of the teaching staffs at
both UCLA and USC  medical  schools.  He has been  Chief of Staff at Santa  Ynez
Community  Hospital  and has served on the Board of  Trustees  of the Santa Ynez
School District.

     EDWARD E.  BIRCH is a  director  of SBB and  SBB&T  and has  served in that
capacity  since  1983.  Dr.  Birch  was  Vice-Chancellor  of the  University  of
California  at Santa  Barbara  from 1976  until his  retirement  in 1993.  He is
currently  Executive  Vice  President  for  Westmont  College in Santa  Barbara,
California.   He  has  been   involved  in  a  number  of  civic  and  community
organizations,  including the Cancer Foundation of Santa Barbara,  Goleta Valley
Community Hospital,  the Santa Barbara Industry Education Council, and the Santa
Barbara Chamber of Commerce.

     TERRILL  F. COX is a  director  of SBB and  SBB&T  and has  served  in that
capacity  since 1997. Mr. Cox is the senior partner in the law firm of Grossman,
Cox & Johnson.  He is a former  Municipal Court Judge. Mr. Cox was a founder and
served  on the  Board of  First  Valley  Bank of  Lompoc  for 24 years  from its
inception.  At the time of the merger of First Valley Bank of Lompoc with SBB&T,
he was Chairman of the Board.

     RICHARD  M.  DAVIS is a  director  of SBB and SBB&T and has  served in that
capacity since 1984.  Mr. Davis is a retired  business  executive.  He is a past
Chairman of the Board of Directors of Santa  Barbara  Cottage  Hospital,  a past
Chairman of the Santa  Barbara  Chamber of Commerce,  and a past Chairman of the
Board of United Way of Santa Barbara.


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<PAGE>



     ANTHONY  GUNTERMANN  is a director  of SBB and SBB&T and has served in that
capacity since 1960. Mr.  Guntermann,  a Certified Public Accountant since 1954,
recently  retired  from the  accounting  firm of  Guntermann,  Thompson & Lanza,
Accountants,  Inc.  (now  McGowen-Guntermann).  He has served as a director  and
President of the California  State Board of  Accountancy  and as a member of the
Santa  Barbara  City  Council,  as  well  as on  numerous  civic  and  community
organizations.  He was one of the  organizers  of SBB&T.  He also was one of the
organizers of Investors Research Fund, Inc.

     DALE E.  HANST  is a  director  of SBB and  SBB&T  and has  served  in that
capacity since 1983.  Mr. Hanst  recently  retired from the law firm of Reicker,
Clough,  Pfau & Pyle,  LLP and was formerly a senior  partner in the law firm of
Schramm & Raddue,  having started with the firm in 1960. He was President of the
State Bar of  California  in 1984 and  served on the  California  Commission  on
Judicial  Performance  from 1984 to 1988.  Mr. Hanst is a past  President of the
Santa Barbara Zoological Society.

     HARRY B.  POWELL  is a  director  of SBB and  SBB&T  and has  served in the
capacity  since  1989.  Mr.  Powell  is  a  retired   businessman   residing  in
Carpinteria.  He  is  a  past  President  of  Rexall  Clubs  International,  the
Carpinteria Business Association and the Carpinteria Unified School District.

     DAVID W.  SPAINHOUR is  President  and Chief  Executive  Officer of SBB and
Chairman  of the  Board  of  SBB&T.  Mr.  Spainhour  joined  SBB&T  in  1966  as
Controller.  He became  Cashier in 1969,  Senior  Vice  President  in 1972,  was
elected to the Board of Directors in 1974, was named Executive Vice President in
1980, and elected  President in February 1989. He served as President and CEO of
SBB&T  until  December  1995.  Mr.  Spainhour  serves on the boards of the Santa
Barbara  Industry  Education  Council,  Channel City Club,  Covenant  Benevolent
Institutions, Westmont College, and United Way of Santa Barbara.

     WILLIAM S. THOMAS,  JR. is the Vice Chairman and Chief Operating Officer of
SBB and President and Chief  Executive  Officer of SBB&T.  Mr. Thomas joined the
Bank in 1994 as Manager of the Trust and Investment Services Division.  Prior to
coming to SBB&T,  Mr. Thomas was an Executive  Vice President of Bank of America
and Manager of the Financial Institutions Group from 1992 to 1994. Prior to that
time he spent  sixteen  years with  Security  Pacific  National  Bank in various
capacities  until  its  merger  with Bank of  America.  His last  position  with
Security   Pacific  was  Executive   Vice   President  and  Manager,   Financial
Institutions.  He is a member of the  Board of  Directors  of the Santa  Barbara
Chamber of Commerce,  Santa Barbara Symphony,  C.A.L.M., Los Padres Council, Boy
Scouts of America and El Adobe Corporation.

     SUSAN TRESCHER is a director of SBB and SBB&T and was originally elected to
the SBB Board at the annual  meeting of  shareholders  held in April  1998.  Ms.
Trescher is an attorney  practicing in Santa Barbara  County since 1964. She has
held   leadership   positions  in  a  number  of   professional   and  community
organizations, including President of the Legal Aid Foundation of Santa Barbara,
Second Vice  President of California  Women  Lawyers,  Director of Santa Barbara
Women Lawyers, Director of the Santa Barbara County Bar Association, Chairman of
the Land Use Section of the County  Counsels'  Association  and President of the
Altrusa Club of Santa Barbara.

     D. VERNON HORTON is Chairman of the Board and Chief Executive Officer and a
director of Pacific,  First  National  Bank and South  Valley.  Mr.  Horton will
become a director of the Surviving  Corporation upon  consummation of the Merger
and will  become a Vice  Chairman of the  Surviving  Corporation.  Mr.  Horton's
banking career commenced in 1964 with Valley National Bank,  Salinas.  He served
that bank in various  capacities  including  lending,  operations  and  business
development and in 1979 he was appointed Chief Executive Officer and a member of
the Board of Directors.  In August of 1981 he was appointed  President of Valley
National Bank. He resigned all positions  with Valley  National Bank on December
31, 1983, to join Pacific and First  National  Bank. Mr. Horton is also director
of Pacific  Capital  Services  Corporation.  He serves as a director of Cherry's
Jubilee and the California Rodeo Association.

     CLAYTON C.  LARSON is  President  and Chief  Administrative  Officer  and a
director of Pacific, First National Bank and Vice Chairman of the Board of South
Valley.  Mr.  Larson will become a director of the  Surviving  Corporation  upon
consummation  of the Merger and will  become a Vice  Chairman  of the  Surviving
Corporation. Mr. Larson's banking career commenced in 1972 when he joined Valley
National  Bank.  During his tenure with  Valley  National  Bank he attained  the
position  of Senior  Vice  President/Branch  Administrator  and in 1981 became a
director of that bank. In addition to his duties as Branch Administrator, he was
responsible  for the  marketing  activities  of the bank and was chairman of the
salary committee. Mr. Larson is also President and a director of Pacific Capital
Services  Corporation.  He  serves  on the  Board of  Trustees  of the  Monterey
Institute of International Studies, Community Hospital of the Monterey Peninsula


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<PAGE>



Peninsula and the California State University  Monterey Bay Foundation Board. He
is President of the  Coalition for Research in Education  (CoRE),  and serves on
the  Advisory  Boards for  Leadership  Monterey  Peninsula,  Legal  Services for
Seniors and the Monterey Peninsula Chamber of Commerce.

         ROGER C. KNOPF is a director  of Pacific  and will become a director of
the Surviving  Corporation  upon  consummation  of the Merger.  Mr. Knopf is the
President of Knopf Construction,  Inc., a general building  construction company
located in Morgan Hill since 1976. Mr. Knopf attended San Jose State University.
He is a past President of the Santa Clara County Landowners  Association and the
Morgan Hill Rotary Club.  He has served on many County of Santa  Clara,  City of
Morgan Hill, and Morgan Hill Unified School District committees. He is presently
Chairman of the Board of COLUMBIA Good Samaritan Health System and is a director
of the Morgan Hill Rotary Endowment Fund.
Mr. Knopf was Morgan Hill Citizen of the Year in 1989.

         WILLIAM H. POPE is a director  of Pacific and will become a director of
the Surviving Corporation upon consummation of the Merger. Mr. Pope is a retired
certified public accountant. In 1960, Mr. Pope was instrumental in the formation
of the firm of Kasavan and Pope, of which he was the senior  partner,  which now
has  offices in Salinas  and  Monterey.  He holds  memberships  in the  American
Institute of Certified Public  Accountants as well as the California  Society of
CPAs.

         The executive officers of the Surviving Corporation will consist of the
current executive  officers of SBB plus Messrs Horton and Larson,  who will each
be appointed to serve as a Vice Chairman of the Surviving Corporation.

         It is anticipated  that the management and operation of SBB and Pacific
will be integrated  after the Merger,  and,  except as provided above, it is not
anticipated  that the  management  of SBB will be  affected  as a result  of the
Merger.  Following the Merger,  it is  anticipated  that each of SBB&T and First
National Bank (as the continuing bank in the Affiliate  Merger) will continue to
operate as separate subsidiaries of the Surviving Corporation.  Nevertheless, it
is  anticipated  that certain  duplicative  operations of these  entities may be
consolidated.

         Cost Savings and Revenue Enhancements

         Management  of SBB  anticipates  that the Merger will result in certain
cost  savings and  revenue  enhancements  for the  Surviving  Corporation.  Cost
savings  are  expected  as a result of the  elimination  of certain  duplicative
administrative   staff   positions   in  the  combined   organization   and  the
corresponding  reduction in staff salary and  benefits.  Initial  estimates  for
staff  reduction  in the  areas  of  accounting,  human  resources,  information
services,   compliance,   internal  audit,  marketing,   general  administrative
services,   loan   administration   and  executive   administration   amount  to
approximately  69.65 full-time  equivalent  positions.  The amount of salary and
benefits  associated  with such positions is estimated to be $3,067,000 in 1998.
Projected savings for the first full year of combined operations  resulting from
the  elimination  of such  duplicative  positions is estimated to be $3,190,000,
which amount assumes a 4% overall  increase in costs related to these  positions
for 1999.

         Additional identified cost savings likely to result from the Merger are
attributable   to  the   elimination  of  various   duplicative   contracts  and
relationships,  including,  but not limited to,  external  loan review,  certain
insurance  coverages,  external  independent  audit,  disaster recovery back-up,
corporate  legal  expense,  shareholder  service  expense,  computer  system and
software  maintenance,  correspondent  bank charges and ATM processing  charges.
Savings in these areas is estimated to be approximately $1,333,000 for the first
year of combined operations.

         Thus, the total  anticipated  impact of these cost savings is estimated
to be  $2,670,000  on an after-tax  basis,  or  approximately  $0.10 per diluted
share, on a pro forma basis for the first year of combined operations.

         In  addition  to  these  expected  cost  savings,   management  of  SBB
anticipates that revenue of the Surviving Corporation will be enhanced primarily
as a result of the  introduction of new products  (currently  offered by SBB) in
the  markets  now  served  by  Pacific,  including  trust  services,   portfolio
residential  real  estate  loans,  indirect  automobile  lending and new deposit
service  products  such as PC online  banking  for both  commercial  and  retail
relationships,   MasterMoneysm  debit  cards  and  MasterMoneysm   retail  sweep
accounts.  The Surviving  Corporation is also expected to benefit from Pacific's
Preferred  Lender status with the Small Business  Administration,  a designation
which SBB does not presently carry.



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<PAGE>



         Management of SBB anticipates  that these  enhancements to revenue will
exceed the increased operating expenses of the combined organization.

         One-Time Charges

         One-time  charges  are  anticipated  to be between  $7.5 and $8 million
dollars  and will  likely  be taken  during  the  fourth  quarter  of 1998  upon
completion  of the Merger.  These  charges  including  investment  banking fees,
change in control payments to certain  executive  officers of Pacific,  contract
termination fees with certain third party vendors, contract programming services
for  system  conversions,   legal  and  shareholder   expenses  associated  with
completion  of the Merger,  and the  write-off  of certain  equipment  no longer
required for operations of the combined organization.

         See "PRO FORMA FINANCIAL DATA."

         The Surviving Corporation will have its corporate headquarters in Santa
Barbara, California and will operate under the name "Pacific Capital Bancorp."

Accounting Treatment

         The Merger is  expected  to qualify as a  "pooling  of  interests"  for
accounting and financial  reporting  purposes.  Under this method of accounting,
the assets and  liabilities of SBB and Pacific will be carried forward after the
Effective  Date  into  the  consolidated  financial  statements  of SBB at their
recorded amounts;  the consolidated income of SBB will include income of SBB and
Pacific for the entire fiscal year in which the Merger  occurs;  the  separately
reported  income of SBB and  Pacific  for prior  periods  will be  combined  and
restated as consolidated income of SBB; and no goodwill will be created.

         The  Reorganization  Agreement  provides  that it is a condition to the
obligations  of SBB and  Pacific to  consummate  the Merger that (i) the parties
shall have  received an opinion from KPMG Peat Marwick LLP,  independent  public
accountants for Pacific,  to the effect that Pacific qualifies as an entity that
may be a party to a business  combination  for which the "pooling of  interests"
method of accounting under Accounting  Principles Board Opinion No. 16 ("APB No.
16") is  available,  (ii) that the parties  shall have  received an opinion from
Arthur Andersen LLP,  independent public accountants for SBB, to the effect that
the Merger will qualify for "pooling of interests"  accounting  treatment  under
APB No. 16 if consummated in accordance with the Reorganization  Agreement,  and
(iii)  that  there  shall have been no  determination  by any  court,  tribunal,
regulatory agency or other  governmental  entity,  that the Merger fails or will
fail to qualify for "pooling of interests"  accounting  treatment.  In the event
such  condition  is not met,  the  Merger  will not be  consummated  unless  the
condition  was waived by SBB and  Pacific.  As of the date of this  Joint  Proxy
Statement/Prospectus,  SBB and Pacific are not aware,  after  consultation  with
Arthur  Andersen LLP and KPMG Peat Marwick  LLP,  respectively,  of any existing
facts or  circumstances  which would preclude such opinions from being issued by
KPMG Peat Marwick LLP and Arthur Andersen LLP.

         The unaudited pro forma financial  information  contained in this Joint
Proxy  Statement/Prospectus  has been prepared  using the "pooling of interests"
accounting  method  to  account  for  the  Merger.   See  "SUMMARY  --  Selected
Comparative  Per Share  Data" and  "--Selected  Financial  Data" and "PRO  FORMA
FINANCIAL DATA."

Certain Federal Income Tax Considerations

         The following is a summary of the material United States federal income
tax   consequences  of  the  Merger  to  SBB,   Pacific  and  their   respective
stockholders.  The following  discussion is based upon current provisions of the
Code,   existing   temporary  and  final  regulations   thereunder  and  current
administrative  rulings  and court  decisions.  No  assurance  can be given that
future legislative,  judicial, or administrative actions or decisions, which may
be retroactive in effect, will not affect the accuracy of any statements in this
Joint Proxy  Statement/Prospectus  with respect to the transactions entered into
or contemplated prior to the effective date of such changes. No attempt has been
made to comment on all United  States  federal  income tax  consequences  of the
Merger that may be relevant to U.S.  stockholders  of SBB and  Pacific.  The tax
discussion set forth below is included for general  information  only and should
not be construed to be, legal, or tax advice to a particular  stockholder of SBB
or Pacific.  Jenkens & Gilchrist, a Professional  Corporation,  counsel for SBB,
has  reviewed the summary  below and is of the opinion that such summary  fairly
summarizes the federal income tax consequences that are likely to be material to
SBB and Pacific  stockholders.  The opinion discussed above has been filed as an
exhibit  to the  Registration  Statement.  This  opinion  is  based  on  various
assumptions and subject to certain  limitations, including assumptions regarding


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<PAGE>



the accuracy of certain factual  representations made by SBB and Pacific and the
parties to the Reorganization  Agreement taking certain actions contemplated by,
and otherwise satisfying,  their obligations under the Reorganization Agreement.
This opinion is not binding on the Internal  Revenue  Service (the "IRS") or any
court.  No assurance can be given that the IRS will not challenge part or all of
this opinion or that a challenge would not be successful.

         THE FOLLOWING DISCUSSION MAY NOT APPLY TO PARTICULAR  CATEGORIES OF SBB
OR PACIFIC  SHAREHOLDERS  SUBJECT TO SPECIAL  TREATMENT  UNDER THE CODE, SUCH AS
INSURANCE  COMPANIES,   FINANCIAL   INSTITUTIONS,   BROKER-DEALERS,   TAX-EXEMPT
ORGANIZATIONS,   NON-U.S.  SHAREHOLDERS,  HOLDERS  WHOSE  SHARES  WERE  ACQUIRED
PURSUANT  TO  THE  EXERCISE  OF  AN  EMPLOYEE   STOCK  OPTION  OR  OTHERWISE  AS
COMPENSATION,  AND  HOLDERS  WHO HOLD  THEIR  SHARES  AS A HEDGE OR AS PART OF A
HEDGING STRADDLE,  CONVERSION OR OTHER RISK REDUCTION TRANSACTION.  SHAREHOLDERS
OF SBB AND  PACIFIC  ARE URGED TO  CONSULT  THEIR  TAX  ADVISORS  REGARDING  THE
SPECIFIC TAX CONSEQUENCES OF THE MERGER, INCLUDING THE STATE, LOCAL, FOREIGN AND
OTHER TAX CONSEQUENCES OF THE MERGER AND OF POTENTIAL  CHANGES IN APPLICABLE TAX
LAWS. NEITHER SBB NOR PACIFIC HAS REQUESTED,  OR WILL REQUEST, A RULING FROM THE
IRS WITH REGARD TO ANY OF THE FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER.

         Jenkens & Gilchrist  will deliver an opinion to SBB, and a copy of such
opinion  to  Pacific,  dated the  Closing  Date to the effect  that,  based upon
certain representations,  assumptions and conditions, the Merger will be treated
for United States  federal  income tax purposes as a  reorganization  within the
meaning of Section  368(a) of the Code and the following  United States  federal
income tax consequences will occur:

                  (a) no gain or loss will be recognized  for federal income tax
         purposes by the holders of Pacific Common Stock upon the receipt of SBB
         Common Stock solely in exchange for such Pacific  Common Stock  (except
         to the extent,  if any,  that cash is  received  in lieu of  fractional
         shares);

                  (b) the aggregate  tax basis of the SBB Common Stock  received
         by Pacific  shareholders in the Merger (including any fractional shares
         of SBB Common Stock) will be the same as the aggregate tax basis of the
         Pacific Common Stock surrendered in exchange therefor;

                  (c) the  holding  period of the SBB Common  Stock  received by
         each Pacific  shareholder in the Merger will include the holding period
         of the shares of Pacific Common Stock surrendered in exchange therefor;

                  (d) cash  payments  received by the holders of Pacific  Common
         Stock in lieu of fractional  shares of SBB Common Stock will be treated
         as if such  fractional  shares  had been  issued in the Merger and then
         redeemed  by SBB.  A  Pacific  shareholder  receiving  such  cash  will
         recognize  gain or loss upon such payment,  measured by the  difference
         (if any) between the amount of cash received and the basis allocated to
         such fractional share. The gain or loss should be capital gain or loss,
         provided that each such  fractional  share of SBB Common Stock was held
         as a capital asset at the Effective Date of the Merger; and

                  (e) a holder of Pacific Common Stock who exercises dissenters'
         rights with  respect to a share of Pacific  Common Stock and receives a
         cash payment for such share generally should recognize  capital gain or
         loss (if each such share was held as a capital  asset at the  Effective
         Date  of  the   Merger)   measured  by  the   difference   between  the
         shareholder's  basis in such  shares and the  amount of cash  received,
         provided  that  such  payment  is  not  "essentially  equivalent  to  a
         dividend"  within the meaning of Section  302 of the Code after  giving
         effect to the constructive ownership rules of the Code (collectively, a
         "Dividend  Equivalent  Transaction").  A sale of shares  pursuant to an
         exercise  of  dissenters'  rights  generally  will  not  be a  Dividend
         Equivalent   Transaction  if,  as  a  result  of  such  exercise,   the
         shareholder exercising the dissenters' rights owns no shares of capital
         stock of SBB (either actually or  constructively  within the meaning of
         Section 318 of the Code) immediately after the Merger.

         A successful IRS challenge to the nontaxable  reorganization  status of
the Merger  could  result in  significant  adverse tax  consequences  to Pacific
shareholders. A Pacific shareholder would recognize gain or loss with respect to
each share of Pacific Common Stock surrendered  equal to the difference  between
the  shareholder's  basis in such  share and the fair  market  value,  as of the
Effective Date, of the SBB Common Stock received in exchange  therefor.  In such
event, a shareholder's  aggregate basis in  the SBB  Common  Stock  so  received


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<PAGE>



would equal its fair market value, and the shareholder's holding period for such
stock would begin the day after the Merger is consummated.

         Even  if  the  Merger  qualifies  as  a  nontaxable  reorganization,  a
recipient of the SBB Common Stock would recognize income to the extent that, for
example,  any such shares were  determined to have been received in exchange for
services, to satisfy obligations or in consideration for anything other than the
Pacific  Common Stock  surrendered.  In  addition,  to the extent that a Pacific
shareholder  was treated as  receiving  (directly or  indirectly)  consideration
other than SBB Common Stock in exchange for such  shareholder's  Pacific  Common
Stock, gain, if any, would have to be recognized.

         Certain  noncorporate  Pacific  shareholders  may be  subject to backup
withholding  at a rate of 31% on cash payments  received in lieu of a fractional
share interest in SBB Common Stock. Backup withholding will not apply,  however,
to a stockholder who furnishes a correct taxpayer  identification number ("TIN")
and  certifies  that he, she or it is not subject to backup  withholding  on the
substitution  Form  W-9 to be  included  in  the  transmittal  letter  or who is
otherwise exempt from backup withholding. A shareholder who fails to provide the
correct TIN on Form W-9 may be subject to a $50 penalty imposed by the IRS.

         THE PRECEDING  DISCUSSION  DOES NOT PURPORT TO BE A COMPLETE  ANSWER OR
DISCUSSION OF ALL POTENTIAL TAX EFFECTS RELEVANT TO THE MERGER. THUS, HOLDERS OF
PACIFIC  COMMON  STOCK ARE URGED TO  CONSULT  THEIR OWN TAX  ADVISORS  AS TO THE
SPECIFIC TAX CONSEQUENCES TO THEM OF THE MERGER,  INCLUDING TAX RETURN REPORTING
REQUIREMENTS,  THE APPLICABILITY AND EFFECT OF FEDERAL,  STATE,  LOCAL AND OTHER
APPLICABLE TAX LAWS AND THE EFFECTS OF ANY PROPOSED CHANGES IN THE TAX LAWS.

Rights of Dissenting Shareholders

         Pacific.

         Because  Pacific Common Stock is listed on Nasdaq,  dissenters'  rights
will be available to shareholders of Pacific only if the holders of five percent
(5%) or more of Pacific  Common Stock make a written  demand upon Pacific or its
transfer agent for the purchase of dissenting  shares in accordance with Chapter
13 of the GCL. If this  condition  is satisfied  and the Merger is  consummated,
shareholders  of  Pacific  who  dissent  from the Merger by  complying  with the
procedures  set forth in Chapter 13 would be entitled to receive an amount equal
to the fair market value of their shares as of July 17, 1998, the day before the
public  announcement of the Merger.  A copy of Chapter 13 of the GCL is attached
hereto as Appendix G and should be read for more complete information concerning
dissenters'  rights.  THE REQUIRED  PROCEDURE SET FORTH IN CHAPTER 13 OF THE GCL
MUST BE FOLLOWED EXACTLY OR ANY DISSENTERS'  RIGHTS MAY BE LOST. The information
set forth  below is a general  summary  of  dissenters'  rights as they apply to
shareholders  of Pacific  and is  qualified  in its  entirety  by  reference  to
Appendix G.

         In order to be entitled to exercise  dissenters'  rights, a shareholder
of Pacific must vote "Against" the Merger at the Pacific Meeting,  either voting
in person or by proxy. Thus, any shareholder of Pacific who executes and returns
a proxy in the accompanying form and who wishes to dissent must specify that his
or her shares are to be voted "Against" the Merger.  If the Pacific  shareholder
returns a proxy without voting  instructions or with  instructions to vote "For"
the Merger, his or her shares will automatically be voted in favor of the Merger
and the Pacific shareholder will lose any dissenters' rights. In addition,  if a
shareholder  of  Pacific  "Abstains"  from  voting  his  or  her  shares,   such
shareholder will lose his or her dissenters' rights.

         Furthermore,  in order to preserve  his or her  dissenters'  rights,  a
shareholder  of Pacific must make a written demand upon Pacific for the purchase
of  dissenting  shares and  payment to such  Pacific  shareholder  of their fair
market  value,  specifying  the number of shares held of record by such  Pacific
shareholder  and a statement  of what the Pacific  shareholder  claims to be the
fair  market  value of those  shares as of July 17,  1998.  Such  demand must be
addressed to Pacific Capital Bancorp, 307 South Main Street, Salinas, California
93901, Attention:  Ms. Ginny Yeater, or to Pacific's transfer agent, ChaseMellon
Shareholder  Services,  L.L.C.,  Overpeck Centre, 85 Challenger Road, Ridgefield
Park,  New Jersey 07660,  and must be received by Pacific or its transfer  agent
not later than the date of the Pacific Meeting. A vote "Against" the Merger does
not constitute such written demand.



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<PAGE>
         If the holders of five percent (5%) or more of the  outstanding  shares
of Pacific  Common Stock have submitted a written demand for Pacific to purchase
their shares,  these demands are received by Pacific or its transfer agent on or
before  the date of the  Pacific  Meeting  and the  Merger  is  approved  by the
shareholders of Pacific,  Pacific will have ten days after such approval to send
to those Pacific  shareholders who have voted against the approval of the Merger
written notice of such approval  accompanied by a copy of Chapter 13 of the GCL,
a statement  of the price  determined  by Pacific to  represent  the fair market
value of the dissenting  shares as of July 17, 1998, and a brief  description of
the  procedure to be followed if a  shareholder  of Pacific  desires to exercise
dissenters'  rights.  Within 30 days  after the date on which the  notice of the
approval of the Merger is mailed,  the dissenting  shareholder must surrender to
Pacific  or its  transfer  agent,  at the  office  designated  in the  notice of
approval,  the certificates  representing the dissenting shares to be stamped or
endorsed with a statement that they are dissenting shares or to be exchanged for
certificates of appropriate  denomination  so stamped or endorsed.  If, however,
such shares are uncertificated  then, within 30 days after the date on which the
notice of the approval of the Merger is mailed, the dissenting  shareholder must
provide  written notice to Pacific or its transfer agent of the number of shares
which the  shareholder  demands  that the  corporation  purchase.  Any shares of
Pacific  Common  Stock  that  are  transferred  prior to  their  submission  for
endorsement or, with respect to uncertificated shares, prior to the provision of
the written  notice  described in the  preceding  sentence  lose their status as
dissenting shares.

         If Pacific and the dissenting  shareholder  agree that the  surrendered
shares  are  dissenting  shares  and  agree  upon the price of the  shares,  the
dissenting  shareholder  will be  entitled  to the agreed  price  with  interest
thereon at the legal rate on judgments from the date of the  agreement.  Payment
of the fair market value of the  dissenting  shares shall be made within 30 days
after the  amount  thereof  has been  agreed  upon or  within 30 days  after any
statutory or contractual conditions to the Merger have been satisfied, whichever
is later, subject to the surrender of the certificates therefor, unless provided
otherwise by agreement.

         If Pacific denies that the shares surrendered are dissenting shares, or
Pacific and the dissenting shareholder fail to agree upon a fair market value of
such shares of Pacific Common Stock, then the dissenting  shareholder of Pacific
must, within six months after the notice of approval is mailed, file a complaint
in the Superior  Court of the proper  county  requesting  the court to make such
determinations  or  intervene  in  any  pending  action  brought  by  any  other
dissenting  shareholder.  If the  complaint  is not filed or  intervention  in a
pending  action  is  not  made  within  the  specified   six-month  period,  the
dissenters'  rights are lost. If the fair market value of the dissenting shares,
is at issue,  the court will  determine,  or will appoint one or more  impartial
appraisers to determine, such fair market value.

         A dissenting  shareholder may not withdraw his or her dissent or demand
for payment unless Pacific consents to such withdrawal.

         SBB.

         Because SBB Common Stock is listed on Nasdaq,  dissenters'  rights will
be available to  shareholders of SBB only if the holders of five percent (5%) or
more of SBB Common  Stock make a written  demand  upon SBB for the  purchase  of
dissenting shares in accordance with Chapter 13 of the GCL. If this condition is
satisfied and the Merger is  consummated,  shareholders  of SBB who dissent from
the Merger by  complying  with the  procedures  set forth in Chapter 13 would be
entitled to receive an amount  equal to the fair market value of their shares as
of July 17, 1998, the day before the public  announcement of the Merger.  A copy
of Chapter 13 of the GCL is attached hereto as Appendix G and should be read for
more complete information  concerning dissenters' rights. THE REQUIRED PROCEDURE
SET FORTH IN CHAPTER 13 OF THE GCL MUST BE FOLLOWED  EXACTLY OR ANY  DISSENTERS'
RIGHTS MAY BE LOST.  The  information  set forth  below is a general  summary of
dissenters'  rights as they apply to shareholders of SBB and is qualified in its
entirety by reference to Appendix G.

         In order to be entitled to exercise  dissenters'  rights, a shareholder
of SBB must vote  "Against"  the  Merger at the SBB  Meeting,  either  voting in
person or by proxy.  Thus,  any  shareholder  of SBB who  executes and returns a
proxy in the  accompanying  form and who wishes to dissent must specify that his
or her shares  are to be voted  "Against"  the  Merger.  If the SBB  shareholder
returns a proxy without voting  instructions or with  instructions to vote "For"
the Merger, his or her shares will automatically be voted in favor of the Merger
and the SBB shareholder  will lose any  dissenters'  rights.  In addition,  if a
shareholder of SBB "Abstains"  from voting his or her shares,  such  shareholder
will lose his or her dissenters' rights.

         Furthermore,  in order to preserve  his or her  dissenters'  rights,  a
shareholder  of SBB must  make a written  demand  upon SBB for the  purchase  of
dissenting  shares and  payment  to such SBB  shareholder  of their fair  market
value, specifying the  number of shares  held of record  by such SBB shareholder

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<PAGE>



and a statement of what the SBB  shareholder  claims to be the fair market value
of those  shares as of July 17,  1998.  Such demand must be  addressed  to Santa
Barbara  Bancorp,  1021  Anacapa  Street,  Santa  Barbara,  California,   93101,
Attention:  Jay D. Smith, or its transfer agent,  Norwest Bank Minnesota,  N.A.,
Shareowner Services 161 North Concord Exchange, South St. Paul, Minnesota 55075,
and must be received by SBB or its transfer agent not later than the date of the
SBB  Meeting.  A vote  "Against"  the Merger does not  constitute  such  written
demand.

         If the holders of five percent (5%) or more of the  outstanding  shares
of SBB Common Stock have  submitted a written  demand for SBB to purchase  their
shares, these demands are received by SBB or its transfer agent on or before the
date of the SBB Meeting and the Merger is approved by the  shareholders  of SBB,
SBB will have ten days after such approval to send to those SBB shareholders who
have voted  against the approval of the Merger  written  notice of such approval
accompanied  by a copy of  Chapter  13 of the  GCL,  a  statement  of the  price
determined by SBB to represent the fair market value of the dissenting shares as
of July 17, 1998,  and a brief  description of the procedure to be followed if a
shareholder of SBB desires to exercise dissenters' rights.  Within 30 days after
the date on which the  notice of the  approval  of the  Merger  is  mailed,  the
dissenting  shareholder  must  surrender  to SBB or its transfer  agent,  at the
office designated in the notice of approval,  the certificates  representing the
dissenting  shares to be  stamped or  endorsed  with a  statement  that they are
dissenting   shares  or  to  be  exchanged  for   certificates   of  appropriate
denomination so stamped or endorsed. If, however, such shares are uncertificated
then,  within 30 days after the date on which the notice of the  approval of the
Merger is mailed, the dissenting  shareholder must provide written notice to SBB
or its transfer agent of the number of shares which the shareholder demands that
the  corporation  purchase.  Any shares of SBB Common Stock that are transferred
prior to their  submission for  endorsement  or, with respect to  uncertificated
shares,  prior to the provision of the written notice described in the preceding
sentence lose their status as dissenting shares.

         If SBB and the dissenting shareholder agree that the surrendered shares
are  dissenting  shares and agree upon the price of the shares,  the  dissenting
shareholder  will be entitled to the agreed price with  interest  thereon at the
legal  rate on  judgments  from the date of the  agreement.  Payment of the fair
market  value of the  dissenting  shares  shall be made within 30 days after the
amount  thereof has been agreed  upon or within 30 days after any  statutory  or
contractual  conditions to the Merger have been  satisfied,  whichever is later,
subject to the surrender of the certificates therefor, unless provided otherwise
by agreement.

         If SBB denies that the shares surrendered are dissenting shares, or SBB
and the  dissenting  shareholder  fail to agree upon a fair market value of such
shares of SBB Common Stock, then the dissenting  shareholder of SBB must, within
six months  after the notice of  approval  is mailed,  file a  complaint  in the
Superior  Court  of  the  proper  county  requesting  the  court  to  make  such
determinations  or  intervene  in  any  pending  action  brought  by  any  other
dissenting  shareholder.  If the  complaint  is not filed or  intervention  in a
pending  action  is  not  made  within  the  specified   six-month  period,  the
dissenters'  rights are lost. If the fair market value of the dissenting shares,
is at issue,  the court will  determine,  or will appoint one or more  impartial
appraisers to determine, such fair market value.

         A dissenting  shareholder may not withdraw his or her dissent or demand
for payment unless SBB consents to such withdrawal.

         FAILURE TO TAKE ANY  NECESSARY  STEP WILL  RESULT IN A  TERMINATION  OR
WAIVER OF THE RIGHTS OF THE HOLDER UNDER  CHAPTER 13 OF THE GCL. A PERSON HAVING
A BENEFICIAL  INTEREST IN SBB COMMON STOCK OR PACIFIC  COMMON STOCK THAT IS HELD
OF RECORD IN THE NAME OF ANOTHER PERSON, SUCH AS A TRUSTEE OR NOMINEE,  MUST ACT
PROMPTLY TO CAUSE THE RECORD HOLDER TO FOLLOW THE  REQUIREMENTS OF CHAPTER 13 OF
THE GCL IN A TIMELY MANNER IF SUCH PERSON  ELECTS TO DEMAND  PAYMENT OF THE FAIR
MARKET VALUE OF SUCH SHARES.

         It is a condition to both parties  obligation to consummate  the Merger
that  dissenters'  rights  have  been  exercised  by no  more  than  9.9% of the
outstanding shares of Pacific Common Stock, or such lesser amount as would cause
the Merger not to qualify for "pooling of interests" accounting treatment.

Waiver and Amendment

         The  Reorganization  Agreement  provides that, at any time prior to the
Closing Date, each party may waive any inaccuracies in the  representations  and
warranties  contained  in  the  Reorganization  Agreement  or  in  any document,


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certificate or writing delivered thereto, or, to the extent permitted under law,
waive  compliance  with any of the  agreements  or  conditions  contained in the
Reorganization Agreement. Any such waiver must be in writing.

         To the extent  permitted  by  applicable  law,  the  Agreements  may be
amended  by SBB and  Pacific  at any time  before  or after  submission  of such
Agreements  for  approval  by the  shareholders  of SBB and  Pacific  at the SBB
Meeting and the Pacific Meeting, respectively. However, following such meetings,
no  amendment  may  be  made  that  (i)  decreases  the  amount  of  the  Merger
Consideration  or (ii)  materially  and  adversely  affects  the  rights  of the
shareholders of either SBB or Pacific without the approval of such shareholders.
Any amendment to the Agreements must be in writing.

Expenses and Fees

         Each party is responsible for its respective  costs,  expenses and fees
during the  pendency  of the  transactions  contemplated  by the  Reorganization
Agreement. In the event, however, attorneys' fees or other costs are incurred to
secure  the  performance  of any  of  the  obligations  of  the  parties  in the
Reorganization  Agreement or to establish damages for the breach thereof,  or to
obtain any other appropriate  relief,  the prevailing party shall be entitled to
recover reasonable attorneys' fees and costs incurred thereby.

         Each party will be  responsible  for the  payment  of  brokerage  fees,
expenses  or  commissions  payable  to  any  agent,   representative  or  broker
representing such party in connection with the transactions  contemplated by the
Reorganization  Agreement,  and each  party  has  agreed  in the  Reorganization
Agreement  to  indemnify  the other and hold the other  harmless for any amounts
owed to any such agent,  representative or broker. See "THE MERGER -- Opinion of
Financial Advisors."

         In the event the  Reorganization  Agreement is terminated or the Merger
is abandoned,  all costs and expenses incurred in connection with the Agreements
and the Merger shall be paid by the party incurring such costs and expenses, and
no party will have any  liability to the other party  except as described  under
the caption  "THE MERGER --  Termination  Fee",  and with  respect to any relief
which either party may be entitled for breach of the Reorganization Agreement.

Dividends

         The Reorganization  Agreement provides that each of SBB and Pacific may
continue to pay regular quarterly dividends with respect to shares of SBB Common
Stock and Pacific Common Stock, respectively, during the pendency of the Merger.
The Reorganization  Agreement also provides that SBB and Pacific shall cooperate
with each other to  coordinate  the record and payment  dates of dividends  with
respect to SBB Common Stock and Pacific  Common Stock during the pendency of the
Merger,  it being the intent of SBB and Pacific  that  holders  thereof will not
receive two dividends, or fail to receive one dividend, for any quarter in which
they would receive a dividend in the absence of the Merger.

Nasdaq Listing

         Pursuant to the terms of the Reorganization Agreement, SBB has prepared
and filed an  application to list on Nasdaq the shares of SBB Common Stock to be
issued to holders of Pacific Common Stock in the Merger.

Resale of SBB Common Stock

         The shares of SBB Common Stock issuable  pursuant to the Merger will be
freely  transferable  under the  Securities  Act except for shares issued to any
Pacific  shareholder  who may be deemed to be an "affiliate" of SBB for purposes
of Rule 144 under the  Securities  Act or an "affiliate" of Pacific for purposes
of  Rule  145  under  the  Securities  Act.  Persons  who  may be  deemed  to be
"affiliates" of Pacific or SBB generally  include  individuals  who, or entities
which,  control,  are  controlled by or are under common control with Pacific or
SBB and will include  directors and certain  officers of Pacific and SBB and may
include, if any, principal shareholders of Pacific and SBB.

         Rules 144 and 145 under the  Securities  Act will  restrict the sale of
SBB Common  Stock  received in the Merger by  "affiliates"  and certain of their
family members and related interests.  Generally,  during the year following the
Effective Date, those persons who are "affiliates" of Pacific at the time of the
Pacific Meeting,  provided they are not also "affiliates" of SBB at or following
the Effective Date, may publicly resell any SBB Common Stock received by them in


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<PAGE>



the Merger, subject to certain limitations as to, among other things, the amount
of SBB  Common  Stock sold by them in any  three-month  period and the manner of
sale. After the one-year period,  and provided they are not also "affiliates" of
SBB, such  "affiliates" may resell their shares without such restriction so long
as there is adequate current public  information with respect to SBB as required
by Rule 144 under the Securities Act.

         The  ability  of  "affiliates"  to resell  shares of SBB  Common  Stock
received  in the  Merger  under  Rule 144 or 145  under  the  Securities  Act as
summarized herein generally will be subject to SBB having satisfied its Exchange
Act  reporting  requirements  for  specified  periods prior to the time of sale.
"Affiliates"  also  would be  permitted  to resell  shares of SBB  Common  Stock
received in the Merger pursuant to an effective registration statement under the
Securities  Act  or  another   available   exemption  from  the  Securities  Act
registration requirements.

         Guidelines of the Commission  regarding  qualifying for the "pooling of
interests"  method of accounting also limit sales of shares of the acquiring and
acquired  company by "affiliates"  of either company in a business  combination.
Guidelines of the  Commission  indicate  further that the "pooling of interests"
method of accounting  will  generally not be challenged on the basis of sales by
affiliates of the acquiring or acquired company if they do not dispose of any of
the shares of the corporation  they own or shares of a corporation  they receive
in  connection  with a merger  during the period  beginning  30 days  before the
merger  and  ending  when  financial  results  covering  at  least  30  days  of
post-merger operations of the combined entity have been published.

         The  Reorganization  Agreement  provides  that  Pacific will obtain and
deliver to SBB an agreement from each "affiliate" of Pacific providing that such
"affiliate"  will not transfer  any shares of SBB Common  Stock  received in the
Merger except in compliance  with the Securities Act and in compliance  with the
requirements  of  Accounting  Principles  Board  Opinion  No. 16  regarding  the
non-disposition of any shares of Pacific Common Stock or SBB Common Stock during
the period  commencing 30 days prior to the  Effective  Date through the date on
which financial results covering at least 30 days of combined  operations of SBB
and Pacific after the Merger have been published.  No shares of SBB Common Stock
will be delivered to an  "affiliate"  of Pacific as Merger  Consideration  until
such "affiliate" has executed and delivered the aforementioned  agreement to SBB
and satisfied the other  requirements  described above under the caption "MERGER
- -- Exchange of Stock Certificates."

         This Joint Proxy  Statement/Prospectus does not cover resales of shares
of SBB  Common  Stock  received  by  any  person  who  may  be  deemed  to be an
"affiliate" of Pacific or SBB.

Mutual Stock Option Agreements

         Concurrently with the execution of the  Reorganization  Agreement,  SBB
executed and  delivered  the SBB Stock Option  Agreement,  pursuant to which SBB
granted to  Pacific  the SBB  Option.  At the same time,  Pacific  executed  and
delivered the Pacific Stock Option Agreement,  pursuant to which Pacific granted
to SBB the Pacific Option.  SBB and Pacific  approved and entered into the Stock
Option  Agreements  to  induce  each  other  to enter  into  the  Reorganization
Agreement.

         The Stock Option  Agreements  are  intended to increase the  likelihood
that  the  Merger  will be  consummated  in  accordance  with  the  terms of the
Reorganization  Agreement  by  making it more  difficult  for  another  party to
acquire SBB or  Pacific.  The  ability of either  party to  exercise  the Issuer
Option  Agreements  (as defined  herein) and to cause  additional  shares of SBB
Common Stock or Pacific  Common  Stock,  as the case may be, to be issued may be
considered  a deterrent  to other  potential  acquisitions  of control of SBB or
Pacific,  as it is likely to increase the cost of an  acquisition  of all of the
shares of SBB or Pacific,  as the case may be,  which would then be  outstanding
and would prevent any successful  bidder from accounting for such acquisition as
a pooling  of  interests.  Consequently,  certain  aspects  of the Stock  Option
Agreements may have the effect of discouraging persons who might now or prior to
the Effective  Date be interested in acquiring all of or a significant  interest
in SBB or Pacific from considering or proposing such an acquisition.

         Except as otherwise  noted below,  the terms and  conditions of the SBB
Stock Option  Agreement and the Pacific Stock Option  Agreement are identical in
all material respects. For purposes of this Section,  except as otherwise noted,
(i) the SBB Stock Option Agreement or the Pacific Option Agreement,  as the case
may be, is sometimes referred to as the "Issuer Option Agreement",  (ii) SBB, as
issuer of the SBB Common  Stock,  and Pacific,  as issuer of the Pacific  Common
Stock, upon the exercise of the SBB Option and the Pacific Option, respectively,
are sometimes individually referred to as the "Issuer", (iii) SBB or Pacific, as
the holder of the Pacific Option and the SBB Option, respectively, are sometimes
individually  referred to as the "Optionee",  (iv) the SBB Option or the Pacific
Option, as the case may be, is sometimes  referred to as the "Issuer Option" and


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(v) the SBB Common  Stock or the Pacific  Common Stock is referred to as "Issuer
Common Stock".

         The SBB Stock Option Agreement  provides for the purchase by Pacific of
3,002,505 shares (the "SBB Option Shares" or the "Issuer Option Shares",  as the
case may be) of SBB  Common  Stock at an  exercise  price of $30.00  per  share,
payable  in cash,  under the  circumstances  described  herein.  The SBB  Option
Shares, if issued pursuant to the SBB Option Agreement,  will in no event exceed
19.5% of the issued and outstanding shares of SBB Common Stock.

         The Pacific Stock Option Agreement  provides for the purchase by SBB of
878,269 shares (the "Pacific  Option Shares" or the "Issuer Option  Shares",  as
the case may be) of  Pacific  Common  Stock at an  exercise  price of $58.00 per
share,  payable in cash, under the circumstances  described herein.  The Pacific
Stock Option Shares, if issued pursuant to the Pacific Option Agreement, will in
no event exceed  19.5% of the issued and  outstanding  shares of Pacific  Common
Stock.

         Provided  that (i) the Optionee is not in breach of the  Reorganization
Agreement or the Issuer Option Agreement,  and (ii) no injunction or other court
order prohibiting  delivery of the Issuer Common Stock has been issued and is in
effect,  the Issuer  Option is  exercisable,  in whole or in part, if a Purchase
Event (as defined  herein) occurs after the date of the Issuer Option  Agreement
and prior to an Exercise Termination Event (as defined herein),  after which the
Issuer Option Agreement will terminate and be of no further force and effect.

         The term "Exercise Termination Event" means the earlier to occur of any
of the following:  (a) the Effective Time of the Merger,  (b) termination of the
Reorganization  Agreement  (other than  termination  by the  Optionee in certain
events) (an "Issuer Termination") prior to the occurrence of a Purchase Event or
a Preliminary  Purchase Event (as defined herein),  (c) the close of business on
the 365th day following the  occurrence  of an Issuer  Termination,  and (d) the
close of  business  on the  365th day after  termination  of the  Reorganization
Agreement  (other than an Issuer  Termination)  following  the  occurrence  of a
Purchase Event or a Preliminary Purchase Event.

         The term "Purchase Event" means any of the following events  subsequent
to the date of the Issuer Option Agreement:

                  (i) without  Optionee's  prior written  consent,  Issuer shall
         have authorized,  recommended,  publicly  proposed,  or entered into an
         agreement  with any person  (other than  Optionee or any  subsidiary of
         Optionee) to effect an Acquisition  Transaction.  As used in the Issuer
         Option  Agreement,  the term  "Acquisition  Transaction"  means (A) any
         tender offer for more than 50% of the outstanding shares of Issuer, (B)
         any merger or  consolidation  of Issuer  with or into any entity  other
         than  Optionee  or a  subsidiary  of  Optionee,  (C) any sale of all or
         substantially  all of the assets of Issuer,  (D) any  reorganization of
         Issuer or other transaction that results or when completed would result
         in a disposition of substantially  all of the assets of Issuer,  or (E)
         the issuance,  sale or other  disposition of shares  representing  more
         than 50% of the shares of Issuer; or

                  (ii) any person  (other  than  Optionee or any  subsidiary  of
         Optionee)  shall have  acquired  beneficial  ownership (as such term is
         defined in Rule 13d-3  promulgated  under the Exchange  Act) of, or the
         right to acquire beneficial  ownership of, or any "group" (as such term
         is  defined  under the  Exchange  Act)  shall  have been  formed  which
         beneficially owns or has the right to acquire  beneficial  ownership of
         more than 50% of the shares of Issuer.

         The term "Preliminary Purchase Event" means any of the following events
or transactions:

                  (i) any person  (other than the Optionee or any  subsidiary of
         the  Optionee)  shall have  commenced (as such terms is defined in Rule
         14d-2  under  the  Exchange  Act) or shall  have  filed a  registration
         statement  under the  Securities  Act with respect to a tender offer or
         exchange offer to purchase any shares of Issuer Common Stock such that,
         upon  consummation of such offer, such person would own or control more
         than 50% of the then outstanding shares of Issuer Common Stock (such an
         offer  being  referred  to herein as a "Tender  Offer" or an  "Exchange
         Offer"); or

                  (ii)  the  holders  of  Issuer  Common  Stock  shall  not have
         approved   the   Reorganization   Agreement  at  the  meeting  of  such
         shareholders  held for the  purpose  of  voting  on the  Reorganization
         Agreement,  such  meeting  shall not have been held or shall  have been
         canceled  prior  to  termination  of  the  Reorganization Agreement, or


                                       66

<PAGE>



         Issuer's  board of  directors  shall  have  withdrawn  or modified in a
         manner adverse  to Optionee  the recommendation  of Issuer's  board  of
         directors with respect  to the Reorganization  Agreement, in each  case
         after it shall have been publicly announced that any person (other than
         Optionee or any  subsidiary of Optionee)  shall have (A)  made, or dis-
         closed an intention  to make, a  proposal to engage  in  an Acquisition
         Transaction, (B) commenced  a Tender  Offer  or  filed  a  registration
         statement under the  Securities Act with  respect to an Exchange Offer,
         or (C) filed  an application (or given a  notice), whether  in draft or
         final form, under  applicable banking or  corporate  law or  any  other
         applicable law seeking  approval to  engage  in an  Acquisition  Trans-
         action.

         In the event of any  change in the Issuer  Common  Stock by reason of a
stock dividend, stock split, split-up,  recapitalization,  combination, exchange
of shares, of similar transaction,  the type and number of shares subject to the
Issuer Option, and the purchase price, will be adjusted  appropriately such that
the  number of shares  of Issuer  Common  Stock  subject  to the  Issuer  Option
continues to equal 19.5% of the Issuer Common Stock then issued and outstanding.

         Upon the  occurrence  of a  Repurchase  Event (as defined  herein) that
occurs  prior to any  Exercise  Termination  Event,  at the request of Optionee,
Issuer shall, subject to regulatory  restrictions,  repurchase the Issuer Option
and any Issuer Common Stock theretofore purchased pursuant to the Issuer Option,
at a specified price. As defined in the Issuer Option  Agreement,  a "Repurchase
Event" shall occur if (i) any person (other than  Optionee or any  subsidiary of
Optionee) shall have acquired  beneficial  ownership of (as such term is defined
in Rule  13d-3  promulgated  under the  Exchange  Act),  or the right to acquire
beneficial  ownership  of, or any "group" (as such term is defined in Rule 13d-5
promulgated  under the Exchange  Act) shall have been formed which  beneficially
owns or has the right to acquire  beneficial  ownership of, more than 50% of the
then  outstanding  shares of Issuer Common  Stock,  or (ii) any of the following
transactions are consummated:  (x) Issuer  consolidates  with or merges into any
person, other than Optionee or any subsidiary of Optionee,  and shall not be the
continuing or surviving  corporation of such consolidation or merger, (y) Issuer
permits any person, other than Optionee or any subsidiary of Optionee,  to merge
into Issuer and Issuer shall be the continuing or surviving corporation, but, in
connection with such merger,  the then outstanding shares of Issuer Common Stock
shall be changed or  exchanged  for stock or other  securities  of Issuer or any
other person or cash or any other property or the  outstanding  shares of Issuer
Common Stock  immediately prior to such merger shall after such merger represent
less than 50% of the  outstanding  shares  and share  equivalents  of the merged
company,  or (z) Issuer sells or otherwise transfers all or substantially all of
its assets to any person, other than Optionee or a subsidiary of Optionee.

         In the event that prior to the  exercise or  termination  of the Issuer
Option,  Issuer  enters into an agreement  to engage in any of the  transactions
described in clause (ii) of the definition of Repurchase  Event above,  Optionee
will receive for each option  share with respect to which the Issuer  Option has
not been exercised an amount of  consideration  in the form and equal to the per
share amount of consideration  that would be received by the holder of one share
of Issuer Common Stock less the purchase price of the Issuer Option (and, in the
event  of an  election  or  similar  arrangement  with  respect  to the  type of
consideration to be received by holders of Issuer Common Stock, proper provision
shall be made so that Optionee would have the same election or similar rights as
would the  holder of the number of shares of Issuer  Common  Stock for which the
Issuer Option is then exercisable).


                            PRO FORMA FINANCIAL DATA

         The following  unaudited pro forma combined  condensed balance sheet as
of June 30, 1998, and the pro forma combined condensed  statements of income for
the six months  ended June 30,  1998 and 1997,  and for each of the years in the
three-year  period ended  December 31, 1997,  give effect to the Merger based on
the historical  consolidated  financial  statements of SBB and Pacific and their
subsidiaries under the assumptions and adjustments set forth in the accompanying
notes to the pro forma financial statements.

         The pro forma combined  condensed  balance sheet assumes the Merger was
consummated on June 30, 1998, and the pro forma  condensed  statements of income
assume that the Merger was  consummated  on January 1 of each period  presented.
The pro forma  statements  may not be  indicative  of the results that  actually
would have  occurred if the Merger had been in effect on the dates  indicated or
which may be obtained in the future.  The pro forma financial  statements should
be read in conjunction with the historical consolidated financial statements and
notes  thereto  of  SBB  and  Pacific  incorporated  by  reference  herein.  See
"INFORMATION INCORPORATED BY REFERENCE."


                                       67

<PAGE>

<TABLE>
<CAPTION>
<S>                                          <C>                 <C>                <C>                     <C>


                                   SANTA BARBARA BANCORP/PACIFIC CAPITAL BANCORP

                                    PRO FORMA COMBINED CONDENSED BALANCE SHEET
                                                    (unaudited)

                                                   June 30, 1998
                                                  (in thousands)


                                            Santa Barbara      Pacific Capital                              Pro Forma
                                               Bancorp             Bancorp         Adjustments(1)(2)        Combined
                                            -------------      ---------------     -----------------        ---------
ASSETS:
Cash and Noninterest-Bearing
   Balances Due From Banks..............     $     57,457        $     51,303       $                       $  108,760
Short-Term Investments..................            4,977                  --                                    4,977
Securities:
   Held-to-Maturity.....................          207,290               5,644                                  212,934
   Available-for-Sale...................          313,837             226,976                                  540,813
Federal Funds Sold and Securities
   Purchased under Resale
   Agreements...........................           60,000              52,393                                  112,393
Loans Available for Sale                               --              12,971                                   12,971
Loans, Net of Unearned Income...........          938,299             438,602                                1,376,901
Less Reserve for Loan Losses............          (23,322)             (4,544)                                 (27,866)
                                             ------------          ----------        -------------          ----------
   Loans, Net...........................          914,977             434,058                   --           1,349,035
                                             ------------          ----------        -------------          ----------
Property and Equipment..................           14,712              15,161                                   29,873
Intangibles.............................           16,553               2,234                                   18,787
Other Assets............................           29,132              14,820                                   43,952
                                             ------------          ----------        -------------          ----------
   Total Assets.........................     $  1,618,935          $  815,560        $          --          $2,434,495
                                             ============          ==========        =============          ==========

LIABILITIES AND EQUITY:
Noninterest-Bearing Deposits............     $    272,620          $  168,550        $                      $  441,170
Interest-Bearing Deposits...............        1,160,998             561,775                                1,722,773
                                             ------------          ----------        -------------          ----------
      Total Deposits....................        1,433,618             730,325                                2,163,943
Federal Funds Purchased and Other
   Short-term Borrowings................           12,043                  --                                   12,043
Long-term Debt..........................           33,000                  --                                   33,000
Other Liabilities.......................           12,430               9,171                                   21,601
                                             ------------         -----------        -------------          ----------
      Total Liabilities.................        1,491,091             739,496                   --           2,230,587
                                             ------------         -----------        -------------          ----------
Shareholders' Equity:
Common Stock............................            5,130              58,444              (55,684)              7,890
Surplus.................................           32,790                  --               55,684              88,474
Retained Earnings.......................           89,250              16,769                                  106,019
Unrealized Net Appreciation
    Available-for-Sale Securities.......              674                 851                                    1,525
                                             ------------         -----------        -------------          ----------
Total Stockholders' Equity..............          127,844              76,064                   --             203,908
                                             ------------         -----------        -------------          ----------
Total Liabilities and Shareholders'
   Equity...............................     $  1,618,935         $   815,560        $          --          $2,434,495
                                             ============         ===========        =============          ==========
Shareholders' Equity per Share..........     $       8.31         $     17.60                               $     8.59





                                                        68

<PAGE>


<FN>

               Notes to Pro Forma Combined Condensed Balance Sheet
                                   (unaudited)

(1)      Based on the  exchange  ration of 1.935  share of SBB Common  Stock for
         each share of Pacific Common Stock,  8,364,399 additional shares of SBB
         Common  Stock  would  have  been  issued  as of June 30,  1998,  on the
         acquisition of Pacific.

(2)      Merger  expenses  and  nonrecurring  charges  directly  related  to the
         business  combination  will be expensed as incurred.  SBB estimates the
         total of such charges will be  approximately  $8.0 to $9.0 million on a
         pretax  basis and $6.5 to $7.5  million  on an  after-tax  basis,  or a
         reduction of $0.28 to $0.32 in earnings  per share.  The effect of such
         charges,  the majority of which are  anticipated  to be recorded in the
         fourth  quarter  of  1998  upon  consummation  of the  Merger,  are not
         reflected in the Pro Forma Combined Condensed Balance Sheet.

</FN>
</TABLE>

                                       69

<PAGE>

<TABLE>
<CAPTION>
<S>                                       <C>              <C>             <C>               <C>              <C>    


                                   SANTA BARBARA BANCORP/PACIFIC CAPITAL BANCORP

                                 PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME
                                                    (unaudited)

                                       (in thousands, except per share data)



                                         Six Months Ended June 30,                   Year Ended December 31,
                                         -------------------------                  ------------------------
                                            1998             1997            1997              1996             1995
                                           ------           ------          ------            ------           -----
Interest Income......................     $96,687          $83,596         $168,150          $133,536         $120,866
Interest Expense.....................      33,343           28,529           60,590            48,368           44,554
                                          -------          -------         --------          --------         --------
   Net Interest Income...............      63,344           55,067          107,560            85,168           76,312
Provision for Loan Losses............       6,933            6,817            8,500             4,949           10,451
                                          -------          -------         --------          --------         --------
Net Interest Income after
Provision for
   Loan Losses.......................      56,411           48,250           99,060            80,219           65,861
                                          -------          -------         --------          --------         --------
Noninterest Income...................      19,950           14,523           28,500            22,102           20,671
Noninterest Expense(2)...............      45,182           37,925           80,989            69,316           61,321
                                          -------          -------         --------          --------         --------
    Income Before Income Taxes.......      31,179           24,848           46,571            33,005           25,211
Income Tax Expense...................      11,467            8,789           16,288            11,301            8,185
                                          -------          -------         --------          --------         --------
Net Income...........................     $19,712          $16,059          $30,283           $21,704          $17,026
                                          =======          =======         ========          ========         ========
Net Income Available to Common
   Shareholders......................     $19,712          $16,059          $30,283           $21,704          $17,026
Net Income per Diluted Common
            Share(1).................       $0.81             $0.6             $1.2              $0.9             $0.7
Average Diluted Common Shares              24,342           24,135           24,188            24,228           24,123
            Outstanding..............

<FN>


                            Notes to Pro Forma Combined Condensed Statements of Income
                                                    (unaudited)


(1)Net income per share and average  shares  outstanding  shown in the pro forma
   analysis  reflect the  restatement  of share  amounts for SBB's 2-for-1 stock
   split effective on April 16, 1998.

(2)Merger expenses and  nonrecurring  charges  directly  related to the business
   combination  will be expensed as incurred.  SBB  estimates  the total of such
   charges will be approximately $8.0 to $9.0 million on a pretax basis and $6.5
   to $7.5  million on an after-tax  basis,  or a reduction of $0.28 to $0.32 in
   earnings  per share.  The effect of such  charges,  the majority of which are
   anticipated to be recorded in the fourth quarter of 1998 upon consummation of
   the Merger, are not reflected in the Pro Forma Combined  Condensed  Statement
   of Income.

</FN>
</TABLE>

                                       70

<PAGE>



                        DESCRIPTION OF SBB CAPITAL STOCK


General

         The  authorized  capital stock of SBB consists of 40,000,000  shares of
Common Stock,  no par value.  SBB is not authorized to issue shares of preferred
stock.  As of the SBB Record Date,  ___________  shares of SBB Common Stock were
issued and outstanding and an additional  __________  shares of SBB Common Stock
were available and reserved for issuance to holders of outstanding stock options
granted under SBB's stock option plans. The following is a brief  description of
the SBB Common Stock.

Voting Rights

         The holders of shares of SBB Common  Stock are  entitled to vote on all
matters  submitted for approval by the  shareholders  of SBB. The holders of SBB
Common Stock are entitled to one vote per share of SBB Common Stock, except with
respect to the election of directors as described below.

         Shareholder approval of most actions,  other than election of directors
as  described  below,  requires  the  approval  of  a  majority  of  the  shares
represented  and  voting,  whether  in person or by proxy,  assuming a quorum is
present  (which shares voting  affirmatively  also  constitute a majority of the
required quorum). A quorum for any shareholder  meeting is the representation at
the meeting of holders of more than 50% of the  outstanding  shares  entitled to
vote.  California  law  requires the approval by the holders of more than 50% of
the outstanding  shares for certain matters,  including certain  reorganizations
and the sale of all or  substantially  all of SBB's assets,  the  dissolution of
SBB,  amendments to SBB's Articles of Incorporation,  and certain  amendments to
SBB's Bylaws.

         Prior to the election of directors,  any shareholder may cumulate votes
for any nominees,  if, prior to the voting,  a shareholder has given notice that
he or she intends to  cumulate  his or her votes.  In  cumulative  voting,  each
shareholder  is entitled in the election of directors to one vote for each share
of SBB  Common  Stock  held  by the  shareholder  multiplied  by the  number  of
directors  to be elected  and may cast all such votes for a single  nominee  for
director  or may  distribute  such votes  among any two or more  nominees as the
shareholder  determines.  The director nominees  receiving the highest number of
votes up to the number of directors to be elected are elected as  directors.  If
the Article Amendment is approved by the shareholders of SBB at the SBB Meeting,
cumulative  voting  will no  longer be  available  to  shareholders  of SBB with
respect to the  election  of  directors.  See "THE SBB  MEETING -- Matters to be
Considered -- The Article Amendment."

Nomination of Directors

         SBB's Bylaws set forth  procedures  for the  nomination of directors by
any shareholders of SBB. In order for any shareholder to nominate any person for
election as a director at any meeting of  shareholders at which directors are to
be elected, the shareholder must submit a written nomination of such director to
the SBB Board not less than  fourteen  (14) days nor more than  fifty  (50) days
prior  to the  scheduled  date  for the  meeting;  provided  that  if less  than
twenty-one  (21) days notice of the meeting is given to the  shareholders,  such
nomination  shall be mailed or delivered to the  Secretary of SBB not later than
the close of business on the seventh  (7th) day  following the date on which the
notice  of  the  meeting  is  mailed  to the  shareholders.  Such  statement  of
nomination must include certain  information  regarding the nominee director and
the  shareholder  making  the  nomination.  The  Chairperson  of any  meeting of
shareholders  may  disregard  any  nomination  not made in  accordance  with the
provisions  of SBB's Bylaws and may instruct the  inspectors  of the election to
disregard  any votes cast for such nominee.  The  foregoing  provisions of SBB's
Bylaws  apply only to  nominations  for  directors  who are to be elected at any
meeting of shareholders called by the SBB Board. The foregoing provisions do not
apply to (a)  nominations  for  directors  who are to be elected at any  special
meeting of shareholders  called by the shareholders at which directors are to be
elected  pursuant  to  Section  305 of the GCL to fill a vacancy on the Board of
Directors or (b) the election of  directors by written  consent of  shareholders
pursuant to Section 603 of the GCL.

Dividend Rights

         The holders of the shares of SBB Common  Stock are  entitled to receive
dividends and  distributions  from SBB when and as declared by the SBB Board out
of funds legally  available therefor. Any  dividends or other  distributions  on


                                       71

<PAGE>



SBB Common  Stock will be  distributed  ratably  among the holders of SBB Common
Stock based upon the number of shares owned of record.

Preemptive Rights

         The  holders of the shares of SBB Common  Stock have no  preemptive  or
similar rights to participate in any future stock issuances or offerings by SBB.

Liquidation Rights

         On the liquidation of SBB, the assets  remaining after payment or other
satisfaction  of all  of  SBB's  outstanding  debts  and  obligations  shall  be
distributed  ratably among the holders of SBB Common Stock,  on the basis on the
number of shares owned of record by each holder.  No holder of any shares of SBB
Common  Stock  shall have any right to receive  the  distribution  of any assets
other than cash.

Assessment and Redemption

         The outstanding shares of SBB Common Stock are  nonassessable,  and SBB
has no right to redeem  any or all of the SBB  Common  Stock at any time or upon
the occurrence of any event.

Restriction on Ownership

         The BHC Act requires any "bank holding  company" (as defined in the BHC
Act)  to  obtain  the  approval  of  the  Federal  Reserve  Board  prior  to the
acquisition of 5% or more of the SBB Common Stock.  Any person other than a bank
holding  company is required to obtain the prior approval of the Federal Reserve
Board to acquire  10% or more of the SBB Common  Stock  under the Change in Bank
Control  Act. Any holder of 25% or more of the SBB Common Stock (or holder of 5%
or more if such holder otherwise  exercises a "controlling  influence" over SBB)
is subject to regulation as a bank holding company under the BHC Act.


                        COMPARISON OF SHAREHOLDER RIGHTS

General

         Each of SBB and Pacific are  incorporated  under the GCL. The rights of
Pacific  shareholders are currently governed by the Articles of Incorporation of
Pacific,  the Bylaws of Pacific and the GCL. The rights of SBB  shareholders are
governed by the Articles of Incorporation of SBB, the Bylaws of SBB and the GCL.
At the Effective  Time of the Merger,  the  shareholders  of Pacific will become
shareholders of SBB and, accordingly, their rights as shareholders will continue
to be  governed  by  the  GCL.  However,  the  provisions  of  the  Articles  of
Incorporation  and Bylaws of SBB differ in certain respects from the Articles of
Incorporation  and  Bylaws of  Pacific.  A summary of the  material  differences
between the respective rights of shareholders of Pacific and those of SBB is set
forth below.  This summary does not purport to be a complete  discussion of, and
is qualified in its entirety by reference to, the Articles of Incorporation  and
Bylaws of each of SBB and Pacific and to the GCL.

Authorized Capital Stock

         As of the SBB Record Date, the authorized capital stock of SBB consists
of  40,000,000  shares of Common  Stock,  and the  authorized  capital  stock of
Pacific consists of 20,000,000  shares of Common Stock and 20,000,000  shares of
undesignated  Preferred Stock, all without par value. As of the SBB Record Date,
there were  issued and  outstanding  _____  shares of SBB Common  Stock,  ______
shares of Pacific Common Stock and no shares of Pacific Preferred Stock.



                                       72

<PAGE>



Shareholder Matters

         Actions by Shareholders Without a Meeting

         GCL Provisions.  The GCL generally provides that any action that may be
taken at any meeting of shareholders of a California corporation may be taken by
the shareholders by written consent without a meeting.  Generally such action by
written  consent  shall be effective as of the date that written  consents  have
been  received  from  holders  of  outstanding  shares  having not less than the
minimum  number of votes that would be necessary to authorize the taking of such
action at a meeting at which all  outstanding  shares  entitled to vote  thereon
were present and voted. Generally this requires that any action taken by written
consent must be approved by a majority of the outstanding voting stock.

         A California  corporation  is required to give prompt  notice to all of
the  non-consenting  shareholders  of any action  taken by written  consent  and
action with respect to the following  matters  shall not be effective  until ten
(10) days  after  receipt  of  written  consents  from the  requisite  number of
shareholders: (a) approval of a contract or other transaction with an interested
director, as determined under Section 310 of the GCL; (b) the indemnification of
any  officer,  director,  employee  or other agent of the  corporation;  (c) any
merger,  consolidation,  sale of assets or similar  transaction  with respect to
which shareholder approval is required under Section 1201 of the GCL; or (d) any
plan for distribution of the assets of the corporation  other than in accordance
with the rights of any outstanding shares of preferred stock.

         Pacific's  Provisions.  Pacific's  Articles of Incorporation and Bylaws
have adopted these  procedures and have not imposed any additional  restrictions
or qualifications on the manner in which shareholders may take action by written
consent and without a meeting.

         SBB's  Provisions.  SBB's  Articles  of  Incorporation  and Bylaws have
adopted these  procedures  and have also  established  the following  additional
procedures for shareholder action by written consent and without a meeting.

          (a)  No corporate  action taken by written consent of the shareholders
               shall be effective  until the later of (i) twenty (20) days after
               the date of the commencement of the solicitation (as such term is
               defined  in Rule 14a-1  promulgated  under the  Exchange  Act) of
               consents  and (ii)  such  date as may be  specified  in the proxy
               statement or information  statement  furnished in connection with
               the solicitation,  provided that the foregoing shall not apply to
               any  action  to  be  taken  by  written  consent  pursuant  to  a
               solicitation  of not  more  than  ten  (10)  persons.  A  consent
               solicitation  shall be deemed to commence when a proxy  statement
               or information  statement  containing the information required by
               law is first furnished to the shareholders of SBB.

          (b)  Any  written   consents   delivered   in   connection   with  any
               solicitation  of  consents  or other  proposed  action by written
               consent  shall  be  effective  on  delivery  of the  original  or
               certified  copy of the consent to SBB and shall be valid only for
               a maximum of sixty (60) days after the date of the earliest dated
               consent  delivered  to SBB.  A  shareholder  may revoke a written
               consent at any time prior to the time that  written  consents  of
               the number of shares  required to authorize  the proposed  action
               have been filed with the  Secretary  of SBB.  A  revocation  of a
               consent shall be effective  upon receipt of the revocation by the
               applicable person.

          (c)  SBB shall  engage  independent  inspectors  of  election  for the
               purposes of reviewing the validity of any consents or revocations
               of consents.

         Shareholder Nominations

         Neither  the GCL nor  Pacific's  Articles  of  Incorporation  or Bylaws
establish  any  particular  procedures  for the  nomination  of any  persons for
election as Directors.

         SBB's Bylaws establish procedures for a shareholder's nomination of any
person for election as a director.  These procedures  generally require that the
shareholder  submit to the  Secretary of SBB (a) a written  nomination  not less
than fourteen (14) nor more than fifty (50) days prior to the scheduled date for
the meeting and (b) certain  information  about the nominee and the shareholder.
These  procedures  do not apply to (i) the  election of  directors  at a meeting
called under  Section 305 of the GCL to fill a vacancy on the Board of Directors
or (ii) the  election of directors by written  consent  without a meeting.  See,
"DESCRIPTION OF CAPITAL STOCK - Nomination of Directors".


                                       73

<PAGE>




         Notice of Shareholder Proposals

         Neither  the GCL nor  Pacific's  Articles  of  Incorporation  or Bylaws
establish any particular  procedures for  shareholders  to submit  proposals for
actions by the shareholders at any meeting of shareholders.

         SBB's Bylaws establish procedures for shareholders to submit proposals,
other than nominations for election as directors, for action by the shareholders
at any meeting of  shareholders.  Proposals  by  shareholders  for action at any
meeting of shareholders must be submitted as follows.

         (a)      If the proposal is submitted by any shareholder other than the
                  shareholder(s) who requested the meeting, the shareholder must
                  deliver written notice of the proposal to the Secretary of SBB
                  not less than  thirty (30) nor more than sixty (60) days prior
                  to the scheduled  date of the meeting;  provided that, if less
                  than  twenty-one  (21) days' notice of the meeting is given to
                  the shareholders, such proposal must be mailed or delivered to
                  the  Secretary  not later  than the close of  business  on the
                  fourteenth (14th) day following the day on which the notice of
                  the meeting was mailed to the shareholders.

         (b)      If the proposal is submitted by any of the  shareholder(s) who
                  requested the meeting, the shareholder(s) must deliver written
                  notice of the proposal to the Secretary of SBB  simultaneously
                  with the  shareholder(s)  submission  of their request for the
                  meeting.

         (c)      Notwithstanding the foregoing,  any shareholder may submit for
                  consideration  at a meeting  any  proposal  which is  directly
                  related to a matter which is  specifically  identified  in the
                  notice  of the  meeting  as a matter on which  action  will be
                  requested.

         (d)      No shareholder,  other than the shareholder(s) on whose behalf
                  the meeting is noticed  and  called,  may submit more than one
                  (1)  proposal  for  consideration  at any one (1)  meeting  of
                  shareholders.

Directors

         Number

         Presently  the  authorized  number of  Directors of Pacific is not less
than  eleven  (11) nor more  than  twenty-one  (21)  with the  exact  number  of
Directors set at eighteen  (18).  The Pacific Board may vary the exact number of
Directors within the foregoing range without shareholder approval.

         Presently  the  authorized  number of Directors of SBB is not less than
seven (7) nor more than  thirteen (13) with the exact number of Directors set at
eleven (11).  The SBB Board may vary the exact  number of  Directors  within the
foregoing range without shareholder approval.

         As a  result  of the  Bylaw  Amendment,  the  approval  of  which  is a
condition to Pacific's  obligations to consummate  the Merger,  the range of the
authorized  number of  Directors  of SBB will be increased to not less than nine
(9) nor more  than  seventeen  (17) with the exact  number  of  Directors  being
fifteen  (15).  See "THE SBB  MEETING -- Matters to be  Considered  -- The Bylaw
Amendment."  Giving  effect to the Bylaw  Amendment,  the SBB Board may vary the
exact  number of  Directors  within  the  foregoing  range  without  shareholder
approval.

         Election

         Presently,  holders of SBB Common  Stock and Pacific  Common Stock each
have the  right to  cumulate  their  votes in the  election  of  directors.  If,
however,  the holders of SBB Common Stock  approve the Article  Amendment at the
SBB Meeting,  cumulative  voting will no longer be available to  shareholders of
SBB with respect to the election of directors.
See "THE SBB MEETING -- Matters to be Considered -- The Article Amendment."

Amendment of Articles of Incorporation and Bylaws

         The GCL and the  Articles of  Incorporation  and Bylaws of both SBB and
Pacific  generally provide that: (a) amendments of the Articles of Incorporation
must be approved by the Board of Directors  and the holders of a majority of the


                                       74

<PAGE>



outstanding  shares  entitled to vote;  and (b)  amendments of the Bylaws may be
approved  by either the Board of  Directors  or the holders of a majority of the
outstanding  shares  entitled to vote,  except that an amendment  specifying  or
changing  a fixed  number of  directors  or the  maximum  or  minimum  number of
directors or changing from a fixed to a variable  number of  directors,  or vice
versa,  must be approved by the holders of a majority of the outstanding  shares
entitled to vote. In addition,  an amendment of the Articles of Incorporation or
Bylaws that would reduce the fixed number of directors or the minimum  number of
directors  to a number  less than five (5)  cannot be  adopted if the votes cast
against its adoption at a meeting of  shareholders  or the shares not consenting
in the case of action by written  consent are equal to or greater than 16.67% of
the outstanding shares entitled to vote.

         In addition, SBB's Articles of Incorporation provide that any amendment
or repeal of the "fair price" provisions  described below must be approved by at
least 66.67% of the outstanding voting shares of SBB.

Fair Price Provision

         SBB's Articles of Incorporation  contain a provision of a type commonly
known as a "fair price" provision.  In general the Articles require the approval
by holders of at least 66.67% of the  outstanding  voting  shares (as defined in
the  Articles)  of SBB as a condition  for any merger,  certain  other  business
combinations and similar  transactions  involving SBB ("Business  Combinations")
and any holder of 10% or more of the  outstanding  voting  shares of SBB (a "Ten
Percent  Shareholder")  unless  either  (a) the  transaction  is  approved  by a
majority  of the  "Disinterested  Directors"  (namely,  members  of the Board of
Directors  who are  neither  affiliated  with the Ten  Percent  Shareholder  nor
nominated,  elected or appointed to the Board of Directors by such  Shareholder)
or (b) certain minimum price, form of consideration and procedural  requirements
are met.  The  Articles  also  require  the  approval by the holders of at least
66.67% of the  outstanding  voting  shares of SBB to amend or  repeal,  or adopt
provisions  inconsistent  with the "fair  price"  provisions  at any time in the
future.

         The "fair  price"  provisions  are  intended  to  provide a measure  of
assurance that all shareholders of SBB will be treated similarly in the event of
certain Business Combinations  involving a Ten Percent Shareholder.  The overall
effect of these proposals may be to render more difficult the  accomplishment of
any merger or other  Business  Combinations  or the  assumption  of control by a
substantial  shareholder  without the prior  approval of the Board of Directors,
and thus to make more  difficult  the removal of  management.  The "fair  price"
provisions in SBB's Articles are designed to protect minority  shareholders from
a purchaser  using  two-tier  pricing and similar  tactics in an attempt to take
over SBB. The provisions are not designed to prevent or discourage tender offers
for all of SBB's Common Stock or Business Combinations approved by a majority of
the Disinterested Directors. They generally should not prevent a tender offer or
other Business Combination in which each shareholder receives  substantially the
same price for his or her shares as each other shareholder or which the Board of
Directors has approved.

         California  law  requires  the  renewal  every  two  (2)  years  of all
provisions  in  a  corporation's   Articles  of   Incorporation   which  contain
super-majority vote requirements.  The requirement of the "fair price" provision
that  certain  Business  Combinations  be approved by 66.67% of the  outstanding
voting shares of SBB is such a super-majority vote. As a result, SBB is required
to submit the "fair price"  provision for  re-approval  by the  shareholders  at
least every two years.  Since the "fair price" provision was not approved by the
shareholders at the annual meeting of  shareholders  held in April 1998, it will
be submitted for re-approval at the next annual shareholders' meeting.

         The Merger is not a  Business  Combination  within  the  meaning of the
"fair price" provision.  Therefore,  the Merger must be approved only by holders
of a majority of the outstanding shares of SBB Common Stock.

Anti-Takeover Provisions

         The "fair price" provision in SBB's Articles of  Incorporation  and the
provisions of SBB's Bylaws that establish procedures for shareholder  nomination
of Directors,  for  shareholder  action by written consent and without a meeting
and  for  submission  of  shareholder  proposals  may be  considered  to have an
"anti-takeover"  effect and may  discourage  any attempt to take over control of
the Company.  The "fair price" provision is likely to make it more difficult for
a large  block of voting  securities  of SBB to acquire SBB in a merger or other
transaction  which has been  approved  by SBB's Board of  Directors.  The Bylaws
provisions  also may  discourage any attempt to take over control of the Company
as they may limit the action that can be taken by the interested company and may
lengthen the period of time required to acquire control of SBB or to amend SBB's
Articles of Incorporation or Bylaws.



                                       75

<PAGE>



         In addition, the Article Amendment,  if approved by the shareholders of
SBB at the SBB  meeting,  may under  certain  circumstances  be viewed as having
anti-takeover  effects.  See "THE SBB MEETING -- Matters to be Considered -- The
Article Amendment -- Other Effects."

         The SBB Board has determined that, while the foregoing provisions might
be deemed to have some  "anti-takeover"  effect,  the principal  effect of these
provisions  is to protect the  shareholders  of SBB and to provide the SBB Board
and the  shareholders  a reasonable  opportunity  to evaluate and respond to any
unsolicited acquisition proposal.


                                  LEGAL OPINION

         The  legality  of the  shares of SBB  Common  Stock to be issued to the
holders of Pacific Common Stock  pursuant to the Merger,  will be passed upon by
Jenkens & Gilchrist,  a  Professional  Corporation.  As of November  ___,  1998,
attorneys in the law firm of Jenkens &  Gilchrist,  a  Professional  Corporation
owned an aggregate of ______ shares of SBB Common Stock.


                                     EXPERTS

Independent Public Accountants for SBB

         The consolidated financial statements of SBB incorporated in this Joint
Proxy Statement/Prospectus by reference from SBB's Annual Report (Form 10-K) for
the year ended  December 31, 1997,  have been  audited by Arthur  Andersen  LLP,
independent  public  accountants,  as  indicated  in their  report with  respect
thereto, and are incorporated herein in reliance upon the authority of said firm
as experts in accounting and auditing in giving said reports.

Independent Auditors for Pacific

         The consolidated  financial  statements of Pacific incorporated in this
Joint Proxy Statement/Prospectus by reference from Pacific's Annual Report (Form
10-K) for the year  ended  December  31,  1997,  have been  audited by KPMG Peat
Marwick  LLP,  independent  auditors,  as set  forth in their  report,  which is
incorporated herein by reference, and have been so incorporated in reliance upon
the report of such firm given upon their  authority as experts in accounting and
auditing.


                             SOLICITATION OF PROXIES

         In addition to solicitation of proxies from  shareholders of SBB Common
Stock and Pacific Common Stock by use of the mails,  solicitation of proxies may
be made  in  person  or by  telephone  or  other  electronic  means  by  certain
directors,  officers  and regular  employees  of SBB and  Pacific,  who will not
receive  additional  compensation for such services.  It is expected that banks,
brokerage  houses  and  other  institutions,  nominees  or  fiduciaries  will be
requested to forward the  soliciting  materials to their  principals  and obtain
authorization for the execution of proxies.  The cost of soliciting proxies from
holders of SBB Common  Stock and Pacific  Common  Stock,  including  the cost of
reimbursing  brokerage houses and other custodians,  nominees or fiduciaries for
forwarding  proxies and proxy  statements to their  principals,  and the cost of
assembling and mailing the Joint Proxy Statement/Prospectus and all papers which
now accompany or hereafter may supplement such materials,  will be borne by each
respective party.


                              SHAREHOLDER PROPOSALS

         SBB expects to hold its next annual meeting of  shareholders  after the
Merger during April 1999. Under rules established by the Commission, shareholder
proposals for the annual meeting of SBB's  shareholders to be held in April 1999
must be  received  by SBB not later  than  November  17,  1998 and must meet the
requirements established by the Commission for shareholder proposals in order to
be  considered  for  inclusion in the 1999 proxy  statement.  Any such  proposal
should be mailed to Santa Barbara Bancorp,  1021 Anacapa Street,  Santa Barbara,
California 93101, Attention:  Secretary.  Upon receipt of any such proposal, SBB
will  determine  whether or not to include such proposal in the proxy  statement
and  proxy  in  accordance  with  the  Commission's  regulations  governing  the
solicitation of proxies.


                                       76

<PAGE>



         If the Merger is not consummated  for any reason,  Pacific expects that
its 1999  annual  meeting of  shareholders  will be held in  ____________  1999.
Shareholder  proposals  for the  annual  meeting  of  Pacific to be held in 1999
(assuming that the Merger has not then been  consummated for any reason) must be
received  by  Pacific  not  later  than  ___________,  1998  and  must  meet the
requirements established by the Commission for shareholder proposals in order to
be considered for inclusion in the 1999 proxy statement of Pacific.


                                 OTHER BUSINESS

         The SBB  Board  does not  intend  to bring any  matter  before  the SBB
Meeting other than as specifically set forth in the Notice of Special Meeting of
Shareholders,  nor  does it know of any  matter  to be  brought  before  the SBB
Meeting by others.  If, however,  any other matters properly come before the SBB
Meeting  or at any and all  adjournments  or  postponements  thereof,  it is the
intention of the proxy  holders  named in the  accompanying  proxies to vote the
shares of SBB Common Stock  represented by such proxies in accordance with their
best judgment.

         The  Pacific  Board  does not  intend to bring any  matter  before  the
Pacific  Meeting other than as  specifically  set forth in the Notice of Special
Meeting of Shareholders, nor does it know of any matter to be brought before the
Pacific Meeting by others.  If, however,  any other matters properly come before
the Pacific Meeting or at any and all adjournments or postponements  thereof, it
is the intention of the proxy holders named in the accompanying  proxies to vote
the shares of Pacific  Common Stock  represented  by such proxies in  accordance
with their best judgment.



                                       77

<PAGE>



                                                                      APPENDIX A
                                                                      ----------


================================================================================








                      AGREEMENT AND PLAN OF REORGANIZATION

                                 BY AND BETWEEN

                             SANTA BARBARA BANCORP,


                                       AND

                            PACIFIC CAPITAL BANCORP,






                            Dated as of July 20, 1998




================================================================================













<PAGE>
<TABLE>
<CAPTION>
<S>                                                                                                            <C> 



                                                 TABLE OF CONTENTS


ARTICLE I.
         TERMS OF THE MERGER AND CLOSING........................................................................A-2
         SECTION 1.01  Merger of Pacific with and into SBB......................................................A-2
         SECTION 1.02  Effective Date...........................................................................A-2
         SECTION 1.03  Effects of the Merger....................................................................A-3
         SECTION 1.04  Conversion of Pacific Common Stock.......................................................A-3
         SECTION 1.05  SBB Common Stock.........................................................................A-4
         SECTION 1.06  Stock Options............................................................................A-4
         SECTION 1.07  Exchange Procedures; Surrender of Common Certificates....................................A-5
         SECTION 1.08  Articles of Incorporation................................................................A-7
         SECTION 1.09  Bylaws...................................................................................A-7
         SECTION 1.10  Directors and Officers...................................................................A-7
         SECTION 1.11  Headquarters of Surviving Corporation....................................................A-7
         SECTION 1.12  Tax Consequences.........................................................................A-8
         SECTION 1.13  Employee Benefits........................................................................A-8
         SECTION 1.14   Severance Payments......................................................................A-8
         SECTION 1.15  Mutual Stock Option Agreements...........................................................A-8

ARTICLE II.
         THE CLOSING, THE CLOSING DATE AND THE EFFECTIVE DATE...................................................A-9
         SECTION 2.01  Time and Place of the Closing and Closing Date...........................................A-9
         SECTION 2.02  Actions to be Taken at the Closing by Pacific............................................A-9
         SECTION 2.03  Actions to be Taken at the Closing by SBB...............................................A-11



                                                       A-i

<PAGE>




ARTICLE III.
         REPRESENTATIONS AND WARRANTIES OF PACIFIC.............................................................A-13
         SECTION 3.01  Organization and Qualification..........................................................A-13
         SECTION 3.02  Execution and Delivery..................................................................A-14
         SECTION 3.03  Capitalization..........................................................................A-15
         SECTION 3.04  Compliance with Laws, Permits and Instruments...........................................A-15
         SECTION 3.05  Financial Statements....................................................................A-16
         SECTION 3.06  Undisclosed Liabilities.................................................................A-17
         SECTION 3.07  Litigation..............................................................................A-17
         SECTION 3.08  Consents and Approvals..................................................................A-17
         SECTION 3.09  Title to Assets.........................................................................A-18
         SECTION 3.10  Absence of Certain Changes or Events....................................................A-18
         SECTION 3.11  Leases, Contracts and Agreements........................................................A-20
         SECTION 3.12  Taxes...................................................................................A-21
         SECTION 3.13  Insurance...............................................................................A-22
         SECTION 3.14  No Adverse Change.......................................................................A-22
         SECTION 3.15  Patents, Trademarks and Copyrights......................................................A-22
         SECTION 3.16  Transactions with Certain Persons and Entities..........................................A-23
         SECTION 3.17  Evidences of Indebtedness...............................................................A-23
         SECTION 3.18  Condition of Assets.....................................................................A-23
         SECTION 3.19  Environmental Compliance................................................................A-23
         SECTION 3.20  Regulatory Compliance...................................................................A-24
         SECTION 3.21  Securities and Exchange Commission Reports..............................................A-25
         SECTION 3.22  Absence of Certain Business Practices...................................................A-25
         SECTION 3.23  Registration Statement; Joint Proxy Statement/Prospectus................................A-25
         SECTION 3.24  Dissenting Shareholders.................................................................A-26
         SECTION 3.25  Pooling of Interests....................................................................A-26
         SECTION 3.26  Books and Records.......................................................................A-26
         SECTION 3.27  Forms of Instruments, Etc...............................................................A-26
         SECTION 3.28  Fiduciary Responsibilities..............................................................A-26
         SECTION 3.29  Guaranties..............................................................................A-26
         SECTION 3.30  Voting Trust or Buy-Sell Agreements.....................................................A-26
         SECTION 3.31  Employee Relationships..................................................................A-26
         SECTION 3.32  Employee Benefit Plans..................................................................A-27
         SECTION 3.33  Interest Rate Risk Management Instruments...............................................A-28
         SECTION 3.34  Year 2000...............................................................................A-29
         SECTION 3.35  Representations Not Misleading..........................................................A-30

ARTICLE IV.
         REPRESENTATIONS AND WARRANTIES OF SBB.................................................................A-30
         SECTION 4.01  Organization and Qualification..........................................................A-30
         SECTION 4.02  Execution and Delivery..................................................................A-32
         SECTION 4.03  Capitalization..........................................................................A-32
         SECTION 4.04  Compliance with Laws, Permits and Instruments.  ........................................A-32
         SECTION 4.05  Financial Statements....................................................................A-33
         SECTION 4.06  Undisclosed Liabilities.................................................................A-34



                                                       A-ii

<PAGE>



         SECTION 4.07  Litigation..............................................................................A-34
         SECTION 4.08  Consents and Approvals..................................................................A-34
         SECTION 4.09  Title to Assets.........................................................................A-35
         SECTION 4.10  Absence of Certain Changes or Events....................................................A-35
         SECTION 4.11  Leases, Contracts and Agreements........................................................A-38
         SECTION 4.12  Taxes...................................................................................A-38
         SECTION 4.13  Insurance...............................................................................A-39
         SECTION 4.14  No Adverse Change.......................................................................A-39
         SECTION 4.15  Patents, Trademarks and Copyrights......................................................A-39
         SECTION 4.16  Transactions with Certain Persons and Entities..........................................A-40
         SECTION 4.17  Evidences of Indebtedness...............................................................A-40
         SECTION 4.18  Condition of Assets.....................................................................A-40
         SECTION 4.19  Environmental Compliance................................................................A-41
         SECTION 4.20  Regulatory Compliance...................................................................A-41
         SECTION 4.21  Securities and Exchange Commission Reports..............................................A-42
         SECTION 4.22  Absence of Certain Business Practices...................................................A-42
         SECTION 4.23  Registration Statement; Joint Proxy Statement/Prospectus................................A-42
         SECTION 4.24  Pooling of Interests....................................................................A-43
         SECTION 4.25  Books and Records.......................................................................A-43
         SECTION 4.26  Forms of Instruments, Etc...............................................................A-43
         SECTION 4.27  Fiduciary Responsibilities..............................................................A-43
         SECTION 4.28  Guaranties..............................................................................A-43
         SECTION 4.29  Voting Trust or Buy-Sell Agreements.....................................................A-43
         SECTION 4.30  Employee Relationships..................................................................A-43
         SECTION 4.31  Employee Benefit Plans..................................................................A-44
         SECTION 4.32  Interest Rate Risk Management Instruments...............................................A-45
         SECTION 4.33  Year 2000...............................................................................A-45
         SECTION 4.34  Representations Not Misleading..........................................................A-46

ARTICLE V.
         COVENANTS OF PACIFIC..................................................................................A-47
         SECTION 5.01  Best Efforts............................................................................A-47
         SECTION 5.02  Merger Agreement........................................................................A-47
         SECTION 5.04  Information for Applications and Statements.............................................A-48
         SECTION 5.05  Required Acts of Pacific................................................................A-48
         SECTION 5.06  Prohibited Acts of Pacific..............................................................A-49
         SECTION 5.07  Access; Pre-Closing Investigation.......................................................A-52
         SECTION 5.08  Director and Committee Meetings.........................................................A-52
         SECTION 5.09  Additional Financial Statements.........................................................A-52
         SECTION 5.10  Untrue Representations..................................................................A-52
         SECTION 5.11  Litigation and Claims...................................................................A-53
         SECTION 5.12  Adverse Changes.........................................................................A-53
         SECTION 5.13  No Negotiation with Others..............................................................A-53
         SECTION 5.14  Consents and Approvals..................................................................A-53
         SECTION 5.15  Environmental Investigation; Right to Terminate Agreement...............................A-53
         SECTION 5.16  Restrictions on Resales.................................................................A-55
         SECTION 5.17  Shareholder Lists.......................................................................A-55



                                                        A-iii

<PAGE>



         SECTION 5.18  Employee Pension Plans..................................................................A-55
         SECTION 5.19  Employee Welfare Benefit Plans..........................................................A-55
         SECTION 5.20  Director Voting.........................................................................A-55
         SECTION 5.21  Dividends...............................................................................A-56
         SECTION 5.22  Non-Compete Agreements..................................................................A-56
         SECTION 5.23  Pooling of Interests Accounting Treatment...............................................A-56
         SECTION 5.24  Disclosure Schedules....................................................................A-56

ARTICLE VI.
         COVENANTS OF SBB......................................................................................A-56
         SECTION 6.01  Best Efforts............................................................................A-56
         SECTION 6.02  Merger Agreement........................................................................A-57
         SECTION 6.03  Regulatory Approvals and Registration Statement.........................................A-57
         SECTION 6.04  Submission of Merger and Related Matters to Shareholders................................A-58
         SECTION 6.05  Information for Applications and Statements.............................................A-58
         SECTION 6.06  Required Acts of SBB....................................................................A-59
         SECTION 6.07  Prohibited Acts of SBB..................................................................A-59
         SECTION 6.08  Access; Pre-Closing Investigation.......................................................A-62
         SECTION 6.09  Director and Committee Meeting..........................................................A-62
         SECTION 6.10  Additional Financial Statements.........................................................A-62
         SECTION 6.11  Untrue Representations..................................................................A-63
         SECTION 6.12  Litigation and Claims...................................................................A-63
         SECTION 6.13  Adverse Change..........................................................................A-63
         SECTION 6.14  No Negotiation with Others..............................................................A-63
         SECTION 6.15  Consents and Approvals..................................................................A-64
         SECTION 6.16  Environmental Investigation; Right to Terminate Agreement...............................A-64
         SECTION 6.17  Stock Options...........................................................................A-65
         SECTION 6.18  Director and Officer Liability Insurance................................................A-66
         SECTION 6.19  Dividends...............................................................................A-66
         SECTION 6.20  Conduct of Business in the Ordinary Course..............................................A-66
         SECTION 6.21  Additions to SBB Board of Directors.....................................................A-66
         SECTION 6.22  Director Voting.........................................................................A-66
         SECTION 6.23  Pooling of Interests Accounting Treatment...............................................A-66
         SECTION 6.24  Disclosure Schedules....................................................................A-66

ARTICLE VII.
         CONDITIONS PRECEDENT TO THE OBLIGATIONS OF PACIFIC....................................................A-67
         SECTION 7.01  Compliance with Representations, Warranties and Agreements.
                   ............................................................................................A-67
         SECTION 7.02  Shareholder Approvals...................................................................A-67
         SECTION 7.03  Government and Other Approvals..........................................................A-67
         SECTION 7.04  No Litigation...........................................................................A-67
         SECTION 7.05  Delivery of Closing Documents...........................................................A-68
         SECTION 7.06  Receipt of Fairness Opinion.............................................................A-68
         SECTION 7.07  Receipt of Pooling Opinions.............................................................A-68
         SECTION 7.08  Registration Statement..................................................................A-68
         SECTION 7.10  Dissenting Shareholders.................................................................A-69



                                                       A-iv

<PAGE>



         SECTION 7.11  Accounting Treatment....................................................................A-69
         SECTION 7.12  Bylaw Amendment.........................................................................A-69
         SECTION 7.13  No Material Adverse Change..............................................................A-69

ARTICLE VIII.
         CONDITIONS PRECEDENT TO THE OBLIGATIONS OF SBB........................................................A-69
         SECTION 8.01  Compliance with Representations, Warranties and Agreements.
                   ............................................................................................A-69
         SECTION 8.02  Shareholder Approvals...................................................................A-70
         SECTION 8.03  Government and Other Approvals..........................................................A-70
         SECTION 8.04  No Litigation...........................................................................A-70
         SECTION 8.05  Delivery of Closing Documents...........................................................A-71
         SECTION 8.06  Receipt of Shareholder Letters..........................................................A-71
         SECTION 8.07  Receipt of Fairness Opinion.............................................................A-71
         SECTION 8.08  Dissenting Shareholders.................................................................A-71
         SECTION 8.09  Receipt of Pooling Opinions.............................................................A-71
         SECTION 8.10  Registration Statement..................................................................A-71
         SECTION 8.11  Federal Tax Opinion.....................................................................A-71
         SECTION 8.12  Accounting Treatment....................................................................A-72
         SECTION 8.13  No Material Adverse Change..............................................................A-72

ARTICLE IX.
         EXPENSES, TERMINATION AND ABANDONMENT.................................................................A-72
         SECTION 9.01 Expenses.................................................................................A-72
         SECTION 9.02  Termination.............................................................................A-73
         SECTION 9.03  Notice of Termination...................................................................A-75
         SECTION 9.04  Effect of Termination...................................................................A-75

ARTICLE X.
         NONSURVIVAL OF REPRESENTATIONS AND WARRANTIES.........................................................A-75
         SECTION 10.01  Nonsurvival of Representations and Warranties..........................................A-75

ARTICLE XI.
         CONFIDENTIAL INFORMATION..............................................................................A-75
         SECTION 11.01  Definition of "Recipient," "Disclosing Party," "Representative"
                  and "Person".................................................................................A-75
         SECTION 11.02  Definition of "Subject Information"....................................................A-76
         SECTION 11.03  Confidentiality........................................................................A-76
         SECTION 11.04  Securities Law Concerns................................................................A-76
         SECTION 11.05  Return of Subject Information..........................................................A-77
         SECTION 11.06  Specific Performance/Injunctive Relief.................................................A-77

ARTICLE XII.
         MISCELLANEOUS.........................................................................................A-77
         SECTION 12.01  Brokerage Fees and Commissions.........................................................A-77
         SECTION 12.02  Entire Agreement.......................................................................A-77
         SECTION 12.03  Further Cooperation....................................................................A-78



                                                       A-v

<PAGE>



         SECTION 12.04  Severability...........................................................................A-78
         SECTION 12.05  Notices................................................................................A-78
         SECTION 12.06  GOVERNING LAW..........................................................................A-79
         SECTION 12.07  Multiple Counterparts..................................................................A-79
         SECTION 12.08  Certain Definitions....................................................................A-80
         SECTION 12.09  Specific Performance. .................................................................A-81
         SECTION 12.10  Attorneys' Fees and Costs..............................................................A-81
         SECTION 12.11  Rules of Construction..................................................................A-81
         SECTION 12.12  Binding Effect; Assignment.............................................................A-81
         SECTION 12.13  Public Disclosure......................................................................A-82
         SECTION 12.14  Extension; Waiver......................................................................A-82
         SECTION 12.15  Amendments.............................................................................A-83
         SECTION 12.16  Access; Due Diligence.  ...............................................................A-83


                                                     EXHIBITS

Exhibit "A"                -        Agreement and Plan of Merger
- -----------
Exhibit "B"                -        SBB Option Agreement
- -----------
Exhibit "C"                -        Pacific Option Agreement
- -----------
Exhibit "D"                -        Opinion Matters of Counsel to Pacific
- -----------
Exhibit "E"                -        Opinion Matters of Counsel to SBB
- -----------
Exhibit "F"                -        Form of Shareholder Letter
- -----------
Exhibit "G"                -        Persons to Deliver Non-Compete Agreements
- -----------
Exhibit "H"                -        Form of Non-Compete Agreement
- -----------

</TABLE>


                                                      A-vi

<PAGE>



                      AGREEMENT AND PLAN OF REORGANIZATION


         This AGREEMENT AND PLAN OF  REORGANIZATION  (this  "Agreement") is made
and entered into as of the 20th day of July,  1998, by and between Santa Barbara
Bancorp, a California  corporation and registered bank holding company under the
Bank Holding  Company Act of 1956,  as amended  (the "BHCA") with its  principal
offices at 1021 Anacapa Street,  Santa Barbara,  California  93101 ("SBB"),  and
Pacific Capital  Bancorp,  a California  corporation and registered bank holding
company under the BHCA with its principal  offices at 307 Main Street,  Salinas,
California 93901 ("Pacific").


                              W I T N E S S E T H:

         WHEREAS, Pacific is a California corporation duly organized and
existing under the laws of the State of California; and

         WHEREAS, SBB is a California corporation duly organized and existing
under the laws of the State of California; and

         WHEREAS, SBB and Pacific desire to combine their respective businesses;
and

         WHEREAS,   in  furtherance  of  the  combination  of  their  respective
businesses,  SBB and Pacific  desire that Pacific shall be merged (the "Merger")
with and into  SBB,  under the  articles  of  incorporation  of SBB and with the
resulting  name "Pacific  Capital  Bancorp" (SBB as it will exist from and after
the Effective  Date (defined  herein) being referred to herein as the "Surviving
Corporation"),  and that (i) all of the issued and outstanding  shares of common
stock of Pacific (other than shares held by dissenting shareholders,  fractional
share  interests and as otherwise set forth herein) shall be converted  into and
exchanged  for shares of common  stock of the  Surviving  Corporation,  (ii) all
outstanding  options to acquire  common stock of Pacific shall be converted into
options to acquire common stock of the Surviving  Corporation,  and (iii) all of
the issued and  outstanding  shares of capital stock of SBB shall continue to be
issued and outstanding shares of capital stock of the Surviving Corporation, all
pursuant to an Agreement and Plan of Merger  substantially  in the form attached
hereto as Exhibit "A" (the "Merger Agreement"); and

         WHEREAS,  it is the intent of the respective Boards of Directors of SBB
and  Pacific  that the Merger be  structured  as a "merger of equals" of SBB and
Pacific and that the  Surviving  Corporation  be governed  and  operated on this
basis; and

         WHEREAS,  as a condition  to, and  immediately  after the execution of,
this Agreement, SBB and Pacific are entering into mutual stock option agreements
in substantially the forms attached hereto as Exhibit "B" and Exhibit "C".

         WHEREAS,  SBB and Pacific believe that the Merger, as provided for, and
subject  to the  terms  and  conditions  set  forth  in this  Agreement  and all
exhibits, schedules and supplements  hereto, is in the best interests of SBB and
Pacific and their respective shareholders; and


                                       A-1

<PAGE>

         WHEREAS,  the  respective  Boards of  Directors of SBB and Pacific have
approved this Agreement and the proposed transactions substantially on the terms
and conditions set forth in this Agreement and the schedules and exhibits hereto
and have authorized the execution thereof.

         WHEREAS,  this Agreement and the Merger Agreement will be submitted for
approval of the respective  shareholders of SBB and Pacific at special  meetings
of their respective shareholders; and

         WHEREAS, the Merger is intended to qualify as a tax-free reorganization
within the meaning of the provisions of Section 368 of the Internal Revenue Code
of 1986, as amended (the "Code"); and

         WHEREAS,  SBB and Pacific desire to set forth certain  representations,
warranties  and  covenants  made by each to the  other as an  inducement  to the
execution  and  delivery of this  Agreement  and certain  additional  agreements
related to the transactions contemplated hereby.

         NOW,  THEREFORE,  for and in  consideration of the foregoing and of the
mutual representations,  warranties,  covenants and agreements contained in this
Agreement,   and  other  good  and  valuable  consideration,   the  receipt  and
sufficiency of which are hereby acknowledged,  and subject to the conditions set
forth below, the parties hereto undertake, promise, covenant and agree with each
other as follows:


                                   ARTICLE I.
                         TERMS OF THE MERGER AND CLOSING

         SECTION 1.01 Merger of Pacific with and into SBB.  Subject to the terms
and conditions of this Agreement and the Merger  Agreement,  in accordance  with
the provisions of Section 1107 of the California  General  Corporation  Law (the
"GCL"), on the Effective Date (as such term is defined in Section 1.02), Pacific
shall merge with and into SBB.  SBB shall be the  Surviving  Corporation  in the
Merger and shall continue its corporate existence under the laws of the State of
California. Upon consummation of the Merger, the separate corporate existence of
Pacific shall terminate.

         SECTION 1.02  Effective  Date.  Subject to the terms and  conditions of
this  Agreement,  upon the filing  with the  Secretary  of State of the State of
California  (the  "California  Secretary") of a duly executed  Merger  Agreement
substantially  in the form  attached  hereto as  Exhibit  "A" for the  merger of
Pacific with and into SBB and officers' certificates  prescribed by Section 1103
of the GCL, the Merger shall become  effective.  The date on which the Merger is
effective as prescribed in the Merger  Agreement  shall be referred to herein as
the "Effective Date", which the parties shall use their best efforts to cause to
occur on the Closing Date (as defined in Section 2.01(a)).

                                       A-2

<PAGE>





         SECTION 1.03  Effects of the Merger.  The Merger shall have the effects
provided  by this  Agreement  and as set forth in Section  1107 of the GCL.  The
Surviving  Corporation shall be the successor to each of SBB and Pacific;  shall
be subject to all the  liabilities,  obligations,  duties and  relations of each
merging party; and shall without the necessity of any conveyance,  assignment or
transfer,  become  the owner of all of the  assets of every  kind and  character
formerly  belonging to SBB and Pacific.  The name of the  Surviving  Corporation
shall be "Pacific Capital  Bancorp",  and Pacific shall provide SBB any consents
necessary  to  permit  the  Surviving  Corporation  to use  such  name as of the
Effective Date.

         SECTION 1.04  Conversion of Pacific Common Stock.

         (a) On the  Effective  Date,  by virtue of the Merger and  without  any
action on the part of the  holders  of the  following-described  security,  each
share of the common  stock,  no par value per share,  of Pacific  (the  "Pacific
Common Stock") issued and  outstanding  immediately  prior to the Effective Date
(other than shares of Pacific  Common Stock (i) as to which  dissenters'  rights
have been  perfected,  or (ii) held  directly  or  indirectly  by Pacific or SBB
(except for Trust  Account  Shares or DPC Shares as defined in Section  1.04(d))
shall be converted into the right to receive 1.935 shares (the "Exchange Ratio")
of the fully-paid,  nonassessable  and registered common stock, no par value per
share,  of SBB (the "SBB Common Stock")  (together with any cash payment in lieu
of fractional shares, as provided below, the "Merger Consideration").

         (b) No  fractional  shares of SBB Common  Stock shall be issued and, in
lieu thereof,  holders of shares of Pacific Common Stock who would  otherwise be
entitled to a fractional share interest (after taking into account all shares of
Pacific  Common Stock held by such holder) shall be paid an amount in cash equal
to the product of such fractional  share interest and the average of the closing
bid and asked price of a share of SBB Common Stock on the Nasdaq National Market
("Nasdaq") on the business day immediately preceding the Effective Date.

         (c) All of the shares of Pacific Common Stock converted into SBB Common
Stock  pursuant to this  Section 1.04 shall no longer be  outstanding  and shall
automatically  be  canceled  and  retired  and  shall  cease  to exist as of the
Effective  Date,  and  each  certificate   (each  a  "Certificate")   previously
representing any such shares of Pacific Common Stock shall thereafter  represent
the right to receive (i) a certificate  representing  the number of whole shares
of SBB Common  Stock and (ii) cash in lieu of  fractional  shares into which the
shares  of  Pacific  Common  Stock  represented  by such  Certificate  have been
converted pursuant to this Section 1.04.  Certificates  previously  representing
shares of Pacific Common Stock shall be exchanged for certificates  representing
whole shares of SBB Common Stock and cash in lieu of fractional shares issued in
consideration  therefor  upon the surrender of such  Certificates  in accordance
with Section 1.07, without any interest thereon. Such certificates  representing
whole  shares  of  SBB  Common  Stock  exchanged  for  certificates   previously
representing shares of Pacific Common Stock shall bear the name of the Surviving
Corporation.





                                       A-3

<PAGE>



         (d) On the Effective  Date, all shares of Pacific Common Stock that are
owned,  directly  or  indirectly,  by Pacific or SBB or any of their  respective
subsidiaries  (other than (i) shares of Pacific  Common Stock held,  directly or
indirectly,  in trust accounts,  managed accounts and the like or otherwise held
in a fiduciary  capacity that are beneficially  owned by third parties (any such
shares,  and shares of Pacific  Common Stock which are similarly  held,  whether
held  directly  or  indirectly  by  Pacific  or SBB,  as the case may be,  being
referred to herein as "Trust Account  Shares") and (ii) shares of Pacific Common
Stock held by Pacific or any of its subsidiaries in respect of a debt previously
contracted  (any such shares being referred to herein as "DPC Shares")) shall be
canceled  and shall  cease to exist  and no stock of SBB or other  consideration
shall be delivered in exchange therefor. All shares of SBB Common Stock that are
owned by Pacific or any of its subsidiaries (other than Trust Account Shares and
DPC Shares with respect to SBB Common Stock) shall be retired.

         (e) If, between the date hereof and the Effective Date, the outstanding
shares of SBB Common Stock or Pacific  Common  Stock shall have been  increased,
decreased, changed into or exchanged for a different number or kind of shares or
securities as a result of a reorganization, recapitalization,  reclassification,
stock  dividend,  stock split,  reverse stock split,  or other similar change in
capitalization (a "Share  Adjustment"),  then the number of shares of SBB Common
Stock into which a share of Pacific Common Stock shall be converted  pursuant to
subsection (a) above shall be appropriately and proportionately adjusted so that
each  shareholder  of Pacific shall be entitled to receive such number of shares
of SBB Common Stock as such  shareholder  would have  received  pursuant to such
Share  Adjustment  had the record date therefor been  immediately  following the
Effective Date.

         (f) If any of the  shares  of  Pacific  Common  Stock  are  "dissenting
shares" as defined  under  applicable  provisions  of Chapter 13 of the GCL, any
Certificate representing such shares shall not be converted as described in this
Section 1.04,  but from and after the Effective  Date shall  represent  only the
right to receive such value as may be  determined  pursuant to Chapter 13 of the
GCL; provided, however, that each dissenting share of Pacific Common Stock which
shall cease to be a dissenting share shall have only such rights as are provided
under the GCL.

         (g) On the Effective Date, the stock transfer books of Pacific shall be
closed,  and no transfer of Pacific Common Stock  theretofore  outstanding shall
thereafter be made.

         SECTION 1.05 SBB Common Stock.  On and after the Effective  Date,  each
share of SBB  Common  Stock  issued  and  outstanding  immediately  prior to the
Closing Date shall remain an issued and outstanding share of common stock of the
Surviving Corporation and shall not be affected by the Merger. References to SBB
Common  Stock in this  Agreement  as of and after the  Effective  Date  shall be
deemed to mean the common stock of the Surviving Corporation.

         SECTION 1.06 Stock Options.

         (a) Between the date of this  Agreement  and the Effective  Date,  each
person  holding one or more options to purchase  shares of Pacific  Common Stock
pursuant to any  Pacific Stock Option  Plan (as defined  in Section 6.17), shall




                                       A-4

<PAGE>



continue  to have the right to  exercise  any vested  Pacific  Stock  Option (as
defined in Section 6.17) prior to the Effective Date.

         (b) On the  Effective  Date,  each  non-statutory  Pacific Stock Option
which is outstanding  and unexercised  immediately  prior thereto shall cease to
represent a right to acquire shares of Pacific Common Stock and shall be assumed
by the  Surviving  Corporation  and  converted  automatically  into an option to
purchase  shares of SBB  Common  Stock in an  amount  and at an  exercise  price
determined as provided below (and otherwise  subject to the terms of the Pacific
Stock Option Plans and the agreements evidencing grants thereunder):

                  (i) The number of shares of SBB Common  Stock to be subject to
         the  converted  option  shall be equal to the  product of the number of
         shares of Pacific  Common Stock subject to the original  option and the
         Exchange Ratio (provided that such number of shares shall be rounded to
         the nearest one one-hundredth of a share); and

                  (ii) The  exercise  price per share of SBB Common  Stock under
         the converted  option shall be equal to the exercise price per share of
         Pacific Common Stock under the original  option divided by the Exchange
         Ratio  (provided  that such  exercise  price  shall be  rounded  to the
         nearest one one-hundredth of a dollar).

         (c) On the  Effective  Date,  each  Pacific  Stock  Option  which is an
"incentive  stock  option"  (as defined in Section 422 of the Code) and which is
outstanding and unexercised immediately prior thereto shall cease to represent a
right to  acquire  shares of  Pacific  Common  Stock and shall be assumed by the
Surviving  Corporation  and converted  automatically  into an option to purchase
shares of SBB Common Stock in an amount and at an exercise price determined in a
manner which is  consistent  with Section  424(a) of the Code.  The duration and
other terms of the  converted  option shall be the same as the original  option,
except that all  references  to Pacific  shall be deemed to be references to the
Surviving Corporation.

         SECTION 1.07  Exchange Procedures; Surrender of Common Certificates.

         (a) Norwest Bank Minnesota (or any successor in interest)  shall act as
the Exchange Agent in the Merger (the "Exchange Agent").

         (b) As soon as  practicable  after the Effective  Date, and in no event
later than three (3) business days thereafter,  the Exchange Agent shall mail to
each holder of record of one or more Certificates (as indicated on the certified
shareholder  list to be delivered  to SBB in  accordance  with  Section  2.02(I)
hereof,  each a "Pacific  Shareholder")  a letter of  transmittal  (which  shall
specify  that  delivery  shall be  effected,  and risk of loss and  title to the
Certificates  shall pass, only upon delivery of the Certificates to the Exchange
Agent) and  instructions  for use in effecting the surrender of the Certificates
in exchange for the Merger Consideration into which the shares of Pacific Common
Stock represented by such Certificate or Certificates  shall have been converted
pursuant to this Agreement.





                                       A-5

<PAGE>



                  (i) Promptly after receipt of such Certificates and letters of
         transmittal,  the Exchange  Agent shall review the executed  letters of
         transmittal in order to verify proper execution thereof.

                  (ii) Upon proper  surrender of a Certificate  for exchange and
         cancellation  to  the  Exchange  Agent,  together  with  such  properly
         completed  letter of  transmittal,  duly  executed,  the holder of such
         Certificate  shall be entitled to receive in  exchange  therefor  (A) a
         certificate  representing  that  number of whole  shares of SBB  Common
         Stock to which such  holder of Pacific  Common  Stock shall have become
         entitled  pursuant to the  provisions of Section 1.04,  and (B) a check
         representing the amount of any cash in lieu of fractional  shares which
         such  holder has the right to  receive  in  respect of the  Certificate
         surrendered  pursuant to this  Section  1.07,  and the  Certificate  so
         surrendered  shall forthwith be canceled.  Until so  surrendered,  each
         such outstanding Certificate shall be deemed for all purposes,  subject
         only to Chapter 13 of the GCL, to evidence  solely the right to receive
         such Merger  Consideration  from SBB as described in Section  1.04.  No
         interest  will be paid or  accrued  on any  cash in lieu of  fractional
         shares or on any unpaid dividends and distributions  payable to holders
         of Certificates.

                  (iii)  Shareholders  who do  not  provide  properly  completed
         letters of transmittal and all appropriate Certificates to the Exchange
         Agent shall  receive  their  Merger  Consideration  promptly  following
         receipt  of  those  properly   completed   documents  and   appropriate
         Certificates  by the  Exchange  Agent.  In the  event  that a letter of
         transmittal  contains an error,  is incomplete or is not accompanied by
         all appropriate Certificates,  then the Exchange Agent will notify such
         Pacific Shareholder promptly of the need for further information.

         (c) If any certificate representing shares of SBB Common Stock is to be
issued  in a name  other  than  that in which  the  Certificate  surrendered  in
exchange therefor is registered, it shall be a condition of the issuance thereof
that the Certificate so surrendered  shall be properly  endorsed (or accompanied
by an  appropriate  instrument  of  transfer)  and  otherwise in proper form for
transfer, and that the person requesting such exchange shall pay to the Exchange
Agent in advance any transfer or other taxes  required by reason of the issuance
of a certificate  representing shares of SBB Common Stock in any name other than
that of the registered  holder of the Certificate  surrendered,  or required for
any other reason,  or shall establish to the  satisfaction of the Exchange Agent
that such tax has been paid or is not payable.

         (d) In the event that any Certificate  shall have been lost,  stolen or
destroyed,  upon  the  making  of an  affidavit  of  that  fact  by the  Pacific
Shareholder  claiming such  Certificate to be lost,  stolen or destroyed and, if
required by SBB in its sole discretion,  the posting by such person of a bond in
such amount as SBB may  determine is reasonably  necessary as indemnity  against
any claim that may be made  against it with  respect  to such  Certificate,  the
Exchange  Agent  shall  issue in  exchange  for such lost,  stolen or  destroyed
Certificate the Merger Consideration  deliverable in respect thereof pursuant to
this Agreement.





                                       A-6

<PAGE>



         (e) Neither the  Exchange  Agent nor any other party to this  Agreement
shall be  liable to any  holder of any  Certificates  for any  amount  paid to a
public  official  pursuant  to any  applicable  abandoned  property,  escheat or
similar laws.

         (f)  Notwithstanding  anything to the  contrary  contained  herein,  no
certificates  representing  shares of SBB Common  Stock shall be  delivered to a
Pacific  Shareholder who is an "affiliate" (as such term is used in Section 5.16
and Section  8.06) of Pacific  unless such  "affiliate"  shall have  theretofore
executed and delivered to SBB the Shareholder Letter referred to in Section 5.16
and Section 8.06 hereof.

         (g) No dividends or other  distributions of any kind which are declared
payable to the  shareholders  of record of the Surviving  Corporation  after the
Effective  Date shall be paid to persons  entitled to receive such  certificates
for SBB Common  Stock until such  persons  surrender  their  Certificates.  Upon
surrender  of such  Certificates,  the  holder  thereof  shall be paid,  without
interest,  any dividends or other  distributions  with respect to the SBB Common
Stock as to which the record  date and  payment  date  occurred  on or after the
Effective Date and before the date of surrender.

         (h) Notwithstanding  anything in this Agreement to the contrary,  for a
period of ninety  (90) days after the  Closing  Date,  holders  of  Certificates
representing shares of Pacific Common Stock shall be entitled to vote as holders
of  shares  of  SBB  Common  Stock   notwithstanding   that  such   Certificates
representing  Pacific  Common  Stock have not been  exchanged  for shares of SBB
Common Stock as provided in this Section 1.07.

         SECTION  1.08  Articles  of  Incorporation.  Subject  to the  terms and
conditions  of  this   Agreement,   on  the  Effective  Date,  the  Articles  of
Incorporation  of SBB shall be the Articles of  Incorporation  of the  Surviving
Corporation  until thereafter  amended in accordance with applicable law, except
that such Articles of Incorporation shall be amended to provide that the name of
the Surviving Corporation shall be "Pacific Capital Bancorp".

         SECTION  1.09  Bylaws.  Subject  to the  terms and  conditions  of this
Agreement,  on the Effective  Date, the Bylaws of SBB shall be the Bylaws of the
Surviving  Corporation  until  thereafter  amended in accordance with applicable
law.

         SECTION 1.10  Directors and Officers.

         (a) From and after the  Effective  Date,  the Board of Directors of the
Surviving  Corporation  shall  consist of the persons as set forth in the Merger
Agreement attached hereto as Exhibit "A".

         (b) From and after the  Effective  Date,  the officers of the Surviving
Corporation  shall be as set forth in the Merger  Agreement  attached  hereto as
Exhibit "A".

         SECTION 1.11  Headquarters of Surviving  Corporation.  On the Effective
Date,  the  headquarters  and  principal  executive  offices  of  the  Surviving
Corporation shall be located in Santa Barbara, California.




                                       A-7

<PAGE>



         SECTION  1.12 Tax  Consequences.  It is intended  that the Merger shall
constitute a  reorganization  within the meaning of Section  368(a)(1)(A) of the
Code, and that this Agreement shall  constitute a "plan of  reorganization"  for
the purpose of Section 368 of the Code.

         SECTION  1.13  Employee  Benefits.  SBB  shall,  with  respect  to each
employee of Pacific or its  Subsidiaries  at the Effective Date who continues in
employment with the Surviving Corporation or its Subsidiaries (each a "Continued
Employee"),  provide the benefits described in this Section 1.13. Subject to the
right  of  subsequent  amendment,   modification  or  termination  in  the  sole
discretion of the Surviving  Corporation as provided in Section 5.18 and Section
5.19 hereof,  each Continued  Employee shall be entitled,  as an employee of the
Surviving  Corporation  or its  Subsidiaries,  to  participate  in SBB  Employee
Benefit  Plans (as defined in Section  4.31(a)) in effect as of the date of this
Agreement,  if such  Continued  Employee  shall be eligible  and,  if  required,
selected for participation therein under the terms thereof.  Continued Employees
shall be  eligible  to  participate  on the same  basis  as  similarly  situated
employees of SBB and its Subsidiaries.  All such participation  shall be subject
to such  terms of such  plans  as may be in  effect  from  time to time and this
Section  1.13 is not  intended  to give any  Continued  Employee  any  rights or
privileges superior to those of other employees of SBB or its Subsidiaries.  The
provisions  of this  Section  1.13  shall not be deemed  or  construed  so as to
provide duplication of similar benefits but, subject to that qualification,  the
Surviving  Corporation  shall,  for purposes of vesting and any age or period of
service  requirements for commencement of participation  with respect to any SBB
Employee  Plans in which a  Continued  Employee  may  participate,  credit  each
Continued  Employee  with  his or her  term  of  service  with  Pacific  and its
Subsidiaries.  Notwithstanding the foregoing, no such credit for term of service
with Pacific and its Subsidiaries  shall be given to any Continued Employee with
respect to participation in or benefits  received  pursuant to the Santa Barbara
Bank & Trust Key Employee Retiree Health Plan and the Santa Barbara Bank & Trust
Retiree  Health Plan, but such credit shall begin to accrue under such plan with
respect to Continued Employees as of the Effective Date.

         SECTION 1.14 Severance  Payments.  The severance  benefits set forth in
Schedule  1.14  hereto  shall be  provided  to  employees  of Pacific who may be
terminated  (i) by Pacific on the  Effective  Date upon  confirmation  that such
employees would be entitled to the severance  benefit,  or (ii) by the Surviving
Corporation or any of its  Subsidiaries  without cause within one year following
the Effective Date.

         SECTION  1.15 Mutual  Stock  Option  Agreements.  As a condition to the
execution of this  Agreement,  SBB and Pacific are executing and delivering each
to the other an Option  Agreement in  substantially  the form attached hereto as
Exhibit "B" and Exhibit "C".






                                       A-8

<PAGE>



                                   ARTICLE II.
              THE CLOSING, THE CLOSING DATE AND THE EFFECTIVE DATE

         SECTION 2.01 Time and Place of the Closing and Closing Date.

         (a) On a date  mutually  agreeable to SBB and Pacific which is not less
than 10 business  days nor more than 30  calendar  days after the receipt of all
necessary  regulatory,  corporate,  shareholder  and  other  approvals  and  the
expiration  of any  mandatory  waiting  periods,  or on such other date mutually
agreeable to SBB and Pacific (herein called the "Closing  Date"), a meeting (the
"Closing")  will take place at which the parties to this Agreement will exchange
certificates,  opinions,  letters  and  other  documents  in order to  determine
whether  all of the  conditions  set  forth  in  Articles  VII and  VIII of this
Agreement  have been  satisfied or waived or whether any  condition  exists that
would permit a party to this Agreement to terminate this  Agreement.  If no such
condition  then exists,  or if no party elects to exercise any right it may have
to terminate this Agreement,  then and thereupon the  appropriate  parties shall
execute such  documents and  instruments  as may be necessary or  appropriate in
order to effect the transactions contemplated by this Agreement.

         (b) The Closing shall take place at the offices of Santa Barbara Bank &
Trust ("SBB&T"),  1021 Anacapa Street, Santa Barbara,  California  93101-2036 on
the Closing  Date,  or at such other  place to which the  parties  may  mutually
agree.

         SECTION  2.02  Actions to be Taken at the  Closing by  Pacific.  At the
Closing,  Pacific  shall  execute and  acknowledge,  or cause to be executed and
acknowledged   (as   appropriate),   and  deliver  to  SBB  such  documents  and
certificates  necessary or  appropriate to carry out the terms and provisions of
this Agreement, including without limitation, the following (all of such actions
constituting conditions precedent to SBB's obligations to close hereunder):

                  A.  True,  correct  and  complete  copies of the  Articles  of
         Incorporation of Pacific and all amendments thereto,  duly certified as
         of a recent date by the California Secretary.

                  B.  True,  correct  and  complete  copies of the  Articles  of
         Association  of First  National  Bank of Central  California  and South
         Valley National Bank  (collectively,  the  "Subsidiary  Banks") and all
         amendments thereto, duly certified as of a recent date by the Office of
         the Comptroller of the Currency (the "OCC").

                  C.  True,  correct  and  complete  copies of the  Articles  of
         Incorporation  of the  Pacific  Subsidiaries  (as  defined  in  Section
         3.01(a)),  other than the Subsidiary Banks, and all amendments thereto,
         duly certified as of a recent date by the California Secretary.

                  D. A  certificate  of  existence,  dated as of a recent  date,
         issued by the California Secretary, duly certifying as to the existence
         of Pacific  and the  Pacific  Subsidiaries,  other than the  Subsidiary
         Banks, under the laws of the State of California.





                                       A-9

<PAGE>



                  E.  Certificates  to do  business,  dated as of a recent date,
         issued by the OCC,  duly  certifying as to the authority of each of the
         Subsidiary  Banks to transact the business of banking under the laws of
         the United States.

                  F.  Certificates of good standing,  dated as of a recent date,
         issued by the California Franchise Tax Board, duly certifying as to the
         good  standing of Pacific and each of the Pacific  Subsidiaries  in the
         State of California.

                  G.  Certificates,  dated as of a recent  date,  issued  by the
         Federal Deposit  Insurance  Corporation  (the "FDIC"),  duly certifying
         that the  deposits of each of the  Subsidiary  Banks are insured by the
         FDIC pursuant to the Federal Deposit Insurance Act.

                  H. A  letter,  dated as of a  recent  date,  from the  Federal
         Reserve  Bank  of  San  Francisco,  to the  effect  that  Pacific  is a
         registered bank holding company under the BHCA.

                  I. A  certificate,  dated as of the Closing Date,  executed by
         the  Secretary  or other  appropriate  executive  officer  of  Pacific,
         pursuant to which such officer shall  certify:  (a) the due adoption by
         the Board of Directors of Pacific of corporate  resolutions attached to
         such  certificate  authorizing  the  execution  and  delivery  of  this
         Agreement and the other agreements and documents  contemplated  hereby,
         including,  but not limited to, the Merger Agreement, and the taking of
         all actions  contemplated  hereby and thereby;  (b) the due adoption by
         the  shareholders of Pacific of resolutions  authorizing the Merger and
         the execution and delivery of this  Agreement and the Merger  Agreement
         and the other agreements and documents  contemplated hereby and thereby
         and the taking of all actions  contemplated hereby and thereby; (c) the
         incumbency  and true  signatures  of those  officers  of  Pacific  duly
         authorized  to act on its behalf in  connection  with the  transactions
         contemplated  by  this  Agreement  and  to  execute  and  deliver  this
         Agreement and the Merger  Agreement and other  agreements and documents
         contemplated   hereby  and  thereby  and  the  taking  of  all  actions
         contemplated hereby and thereby on behalf of Pacific; (d) that the copy
         of the  Bylaws of  Pacific  attached  to such  certificate  is true and
         correct and such Bylaws have not been  amended  except as  reflected in
         such  copy;  and (e) a true and  correct  copy of the  list of  Pacific
         Shareholders as of the Closing Date.

                  J. A certificate, dated as of the Closing Date, executed by an
         executive officer of Pacific,  pursuant to which Pacific shall certify,
         to the best  knowledge of such executive  officer,  that (i) all of the
         representations  and  warranties  made in Article III of this Agreement
         are true and correct in all material  respects on and as of the date of
         such certificate as if made on such date and that,  except as expressly
         permitted by this Agreement,  there shall have been no Material Adverse
         Change (as defined in Section  12.08(C) hereof) with respect to Pacific
         since December 31, 1997, and (ii) Pacific has performed and complied in
         all  material  respects  with  all of its  obligations  and  agreements
         required to be  performed  on or prior to the  Closing  Date under this
         Agreement.

                  K. Any signed Non-Compete  Agreements (as defined  in  Section
         5.22) from those  persons identified on  Exhibit "G" attached hereto as
         Pacific, consistent with Pacific's  obligations to use its best efforts




                                      A-10

<PAGE>



         as set forth in Section 5.22 hereof, has been able to obtain on or
         before the Closing Date.

                  L. All consents  required to be obtained by Pacific from third
         parties to consummate the transactions contemplated by this Agreement.

                  M. An opinion of counsel to  Pacific substantially in the form
         of Exhibit "D" attached hereto.

                  N. All other  documents  required  to be  delivered  to SBB by
         Pacific  under  the  provisions  of  this  Agreement,   and  all  other
         documents,  certificates and instruments as are reasonably requested by
         SBB or its counsel.

         SECTION 2.03 Actions to be Taken at the Closing by SBB. At the Closing,
SBB shall execute and acknowledge (as  appropriate)  and deliver to Pacific such
documents and  certificates  necessary or appropriate to carry out the terms and
provisions of this Agreement,  including without limitation,  the following (all
of such actions constituting  conditions  precedent to Pacific's  obligations to
close hereunder):

                  A. True,  correct  and  complete  copies of SBB's  Articles of
         Incorporation and all amendments thereto, duly certified as of a recent
         date by the California Secretary.

                  B.  True,  correct  and  complete  copies of the  Articles  of
         Incorporation of SBB&T, and all amendments  thereto,  duly certified as
         of a recent date by the  Commissioner of Financial  Institutions of the
         State of California (the "California Commissioner").

                  C.  True,  correct  and  complete  copies of the  Articles  of
         Incorporation  of  Sanbarco  Mortgage  Company   ("Sanbarco")  and  all
         amendments  thereto,  duly  certified  as  of  a  recent  date  by  the
         California Secretary.

                  D.  Good  standing  and  existence  certificates  for  SBB and
         Sanbarco,  dated as of a recent date,  issued by the appropriate  state
         officials,  duly  certifying  as to the  existence and good standing of
         each of SBB and Sanbarco in the State of California.

                  E. Certificate of Existence, dated as of a recent date, issued
         by the California Commissioner,  duly certifying as to the existence of
         SBB&T under the laws of the State of California.

                  F.  Certificates of good standing,  dated as of a recent date,
         issued by the California Franchise Tax Board, duly certifying as to the
         good standing of SBB and each of the SBB  Subsidiaries  in the State of
         California.





                                      A-11

<PAGE>



                  G. Certificate, dated as of a recent date, issued by the FDIC,
         duly  certifying  that the  deposits  of SBB&T are  insured by the FDIC
         pursuant to the Federal Deposit Insurance Act.

                  H. A  letter,  dated as of a  recent  date,  from the  Federal
         Reserve Bank of San  Francisco,  to the effect that SBB is a registered
         bank holding company under the BHCA.

                  I. A  certificate,  dated as of the Closing Date,  executed by
         the  Secretary or an Assistant  Secretary of SBB pursuant to which such
         officer shall  certify:  (a) the due adoption by the Board of Directors
         of  SBB  of  corporate   resolutions   attached  to  such   certificate
         authorizing  the execution and delivery of this Agreement and the other
         agreements  and  documents  contemplated  hereby  and the taking of all
         actions  contemplated  hereby and thereby;  (b) the due adoption by the
         shareholders  of SBB of  resolutions  authorizing  the  Merger  and the
         execution and delivery of this  Agreement and the Merger  Agreement and
         the other agreements and documents  contemplated hereby and thereby and
         the taking of all  actions  contemplated  hereby and  thereby;  (c) the
         incumbency and true signatures of those officers of SBB duly authorized
         to act on its behalf in connection with the  transactions  contemplated
         by this  Agreement and to execute and deliver this  Agreement and other
         agreements  and  documents  contemplated  hereby  and the taking of all
         actions  contemplated hereby and thereby on behalf of SBB, and (d) that
         the copy of the Bylaws of SBB attached to such  certificate is true and
         correct and such Bylaws have not been  amended  except as  reflected in
         such copy.

                  J. A certificate,  dated as of the Closing Date, executed by a
         duly authorized officer of SBB, pursuant to which SBB shall certify, to
         the best knowledge of such officer, that (i) all of the representations
         and  warranties  made in  Article  IV of this  Agreement  are  true and
         correct  in  all  material  respects  on and as of  the  date  of  such
         certificate  as if made on such  date and  that,  except  as  expressly
         permitted by this Agreement,  there shall have been no Material Adverse
         Change (as  defined in Section  12.08(C)  hereof)  with  respect to SBB
         since December 31, 1997, and (ii) SBB has performed and complied in all
         material  respects with all of its obligations and agreements  required
         to be performed on or prior to the Closing Date under this Agreement.

                  K. All  consents  required  to be  obtained  by SBB from third
         parties to consummate the transactions contemplated by this Agreement.

                  L. An opinion of counsel  to SBB substantially  in the form of
         Exhibit "E" attached hereto.

                  M. All other documents  required to be delivered to Pacific by
         SBB under the provisions of this  Agreement,  and all other  documents,
         certificates and instruments as are reasonably  requested by Pacific or
         its counsel.






                                      A-12

<PAGE>



                                  ARTICLE III.
                    REPRESENTATIONS AND WARRANTIES OF PACIFIC

         Pacific  hereby makes the  representations  and warranties set forth in
this Article III to SBB.

         SECTION 3.01  Organization and Qualification.

         (a)  Pacific  is  a  California  corporation  duly  organized,  validly
existing under the laws of the State of  California,  and in good standing under
all laws, rules and regulations  applicable to corporations located in the State
of  California.  Pacific is a bank holding  company  registered  under the BHCA.
Pacific has all requisite corporate power and authority (including all licenses,
franchises,  permits  and  other  governmental  authorizations  as  are  legally
required) to carry on its  business as now being  conducted,  to own,  lease and
operate its properties and assets,  including, but not limited to, as now owned,
leased or operated,  and to enter into and carry out its obligations  under this
Agreement and the Merger Agreement.  Schedule 3.01(a) sets forth a complete list
of each  Subsidiary (as defined in Section  12.08(B)) of Pacific  (collectively,
the "Pacific  Subsidiaries").  Except as set forth on Schedule 3.01(a),  Pacific
does not own or control any  Affiliate (as defined in Section  12.08(A)  hereof)
other than the Pacific Subsidiaries. True and complete copies of the Articles of
Incorporation and Bylaws of Pacific and the Pacific Subsidiaries (other than the
Subsidiary Banks), as amended to date, certified by the Secretary of Pacific and
each Pacific Subsidiary, as applicable, have been delivered to SBB.

         (b) Each of the Subsidiary Banks is a national banking association duly
organized,  validly  existing and in good standing  under the laws of the United
States of America,  and in good standing under all laws,  rules, and regulations
applicable to national banking  associations located in the State of California.
Each of the  Subsidiary  Banks has all requisite  corporate  power and authority
(including   all   licenses,   franchises,   permits   and  other   governmental
authorizations as are legally required) to carry on their respective  businesses
as now being  conducted,  to own,  lease and operate its  properties and assets,
including,  but not  limited  to, as now  owned,  leased or  operated.  True and
complete  copies  of the  Articles  of  Association  and  Bylaws  of each of the
Subsidiary  Banks,  as  amended  to date,  certified  by the  Secretary  of each
Subsidiary  Bank, have been delivered to SBB. Each of the Subsidiary Banks is an
insured  bank as defined in the  Federal  Deposit  Insurance  Act (the  "FDIA").
Neither of the  Subsidiary  Banks own or control  any  Affiliate  (as defined in
Section 12.08(A) hereof) or Subsidiary (as defined in Section 12.08(B)  hereof).
Except  for  assessability  under  12  U.S.C.  ss.55,  all  of  the  issued  and
outstanding shares of capital stock of the Subsidiary Banks are owned by Pacific
free and clear of all liens,  encumbrances,  rights of first refusal, options or
other  restrictions  of any  nature  whatsoever,  and all such  shares  are duly
authorized  and  validly  issued and are fully paid,  nonassessable  and free of
preemptive  rights of any  person.  There  are no  options,  warrants  or rights
outstanding to acquire any capital stock of the  Subsidiary  Banks and no person
or entity has any other  right to purchase  or acquire  any  unissued  shares of
stock of any of the Subsidiary Banks, nor does any such Subsidiary Bank have any
obligation of any nature with respect to its unissued shares of stock.





                                      A-13

<PAGE>



         (c) Each of Pacific Subsidiaries, other than the Subsidiary Banks, is a
California  corporation  duly organized,  validly  existing and in good standing
under the laws of the State of California,  and in good standing under all laws,
rules,  and  regulations  applicable  to  corporations  located  in the State of
California.  Each such Pacific Subsidiary has all requisite  corporate power and
authority  (including all licenses,  franchises,  permits and other governmental
authorizations as are legally required) to carry on their respective  businesses
as now being  conducted,  to own,  lease and operate its  properties and assets,
including,  but not limited  to, as now owned,  leased or  operated.  All of the
issued and outstanding  shares of capital stock of each such Pacific  Subsidiary
is owned by Pacific free and clear of all liens,  encumbrances,  rights of first
refusal,  options or other restrictions of any nature  whatsoever,  and all such
shares are duly authorized and validly issued and are fully paid,  nonassessable
and free of preemptive rights of any person.  There are no options,  warrants or
rights outstanding to acquire any capital stock of the Pacific  Subsidiaries and
no person or entity has any other  right to  purchase  or acquire  any  unissued
shares of stock of any of the Pacific  Subsidiaries,  nor does any such  Pacific
Subsidiary have any obligation of any nature with respect to its unissued shares
of stock.

         (d) Except as  required  by the  National  Bank Act,  the nature of the
business of Pacific and the Pacific Subsidiaries does not require any of them to
be licensed or qualified to do business in any jurisdiction other than the State
of California.  Except as disclosed on Schedule 3.01(d), neither Pacific nor the
Pacific Subsidiaries have any equity interest,  direct or indirect, in any other
bank or  corporation  or in any  partnership,  joint  venture or other  business
enterprise or entity,  except as acquired  through  settlement of  indebtedness,
foreclosure, the exercise of creditors' remedies or in a fiduciary capacity, and
the  business  carried on by Pacific and the Pacific  Subsidiaries  has not been
conducted  through  any other  direct or indirect  Subsidiary  or  Affiliate  of
Pacific or the Pacific Subsidiaries.

         (e) Neither Pacific nor any of Pacific  Subsidiaries  that is neither a
bank, a bank  operating  subsidiary or a bank service  corporation,  directly or
indirectly,  engages in any activity prohibited by the Board of Governors of the
Federal Reserve System (the "Federal Reserve").  Without limiting the generality
of the foregoing,  any equity investment of Pacific and each Pacific  Subsidiary
that is not a bank, a bank operating  subsidiary or a bank service  corporation,
is not prohibited by the Federal Reserve.

         (f) Neither of the Subsidiary Banks, directly or indirectly, engages in
any activity prohibited by the OCC.

         SECTION 3.02  Execution and  Delivery.  Pacific has taken all corporate
action necessary to authorize the execution, delivery and (provided the required
regulatory and shareholder approvals are obtained) performance of this Agreement
and the other  agreements  and  documents  contemplated  hereby to which it is a
party, including,  but not limited to, the Merger Agreement.  This Agreement has
been, and the other agreements and documents contemplated hereby, including, but
not  limited  to, the Merger  Agreement,  have been or at Closing  will be, duly
executed by Pacific and each  constitutes and will  constitute the legal,  valid
and binding obligation of Pacific, enforceable in accordance with its respective
terms and  conditions,  except as  enforceability  may be limited by bankruptcy,
conservatorship, insolvency, moratorium, reorganization, receivership or similar




                                      A-14

<PAGE>



laws and judicial decisions  affecting the rights of creditors  generally and by
general  principles  of equity  (whether  applied in a  proceeding  at law or in
equity).

         SECTION 3.03  Capitalization.  The entire  authorized  capital stock of
Pacific  consists of (i) 20,000,000  shares of Pacific  Common Stock,  4,503,945
shares of which are fully paid,  validly issued,  nonassessable and outstanding,
and  321,376  additional  shares of which have been  reserved  for  issuance  to
holders of  outstanding  Pacific  Stock  Options  (as  defined  in Section  6.17
hereto),  and (ii) 20,000,000  shares of preferred stock, no par value per share
(the "Pacific Preferred  Stock"),  of which no shares of Pacific Preferred Stock
are issued or outstanding.  Schedule 3.03 contains a list of each of the Pacific
Stock Option Plans, including (i) the number of outstanding options with respect
to each Pacific Stock Option Plan, (ii) the weighted  average exercise price per
share with respect to each Pacific Stock Option Plan, (iii) a list of all option
holders with respect to each Pacific  Stock Option Plan,  and (iv) the number of
vested and  unvested  Pacific  Stock  Options  with  respect to each such option
holder in each Pacific Stock Option Plan.  All Pacific Stock Options were issued
and,  upon  issuance  in  accordance  with the terms of the  outstanding  option
agreements,  the shares of Pacific  Common  Stock shall be issued in  compliance
with all applicable securities laws. Except as disclosed in Schedule 3.03, there
are no (i)  other  outstanding  equity  securities  of any  kind  or  character,
including but not limited to preferred stock,  (ii)  outstanding  subscriptions,
options, convertible securities,  rights, warrants, calls or other agreements or
commitments  of any kind  issued or  granted  by, or  binding  upon,  Pacific to
purchase or otherwise  acquire any security of or equity  interest in Pacific or
(iii) outstanding  subscriptions,  options, rights, warrants, calls, convertible
securities,  irrevocable  proxies or other agreements or commitments  obligating
Pacific  to issue any  shares  of,  restricting  the  transfer  of or  otherwise
relating  to shares of its  capital  stock of any  class.  All of the issued and
outstanding  shares of Pacific Common Stock have been duly  authorized,  validly
issued  and are  fully  paid and  nonassessable,  and have  not been  issued  in
violation of the preemptive rights of any person.  Such shares of Pacific Common
Stock have been issued in full  compliance  with  applicable  law.  There are no
restrictions  applicable  to the payment of  dividends  on the shares of Pacific
Common  Stock,  except  pursuant to  applicable  laws and  regulations,  and all
dividends declared prior to the date of this Agreement have been paid.

         SECTION 3.04 Compliance with Laws, Permits and Instruments.

         (a)  Except as set forth in  Schedule  3.04,  Pacific  and the  Pacific
Subsidiaries,  as applicable, are in compliance with, and are not in default (or
with the giving of notice or the passage of time will be in default)  under,  or
in violation of, (i) any provision of the Articles of Incorporation or Bylaws of
Pacific or the Pacific  Subsidiaries (other than the Subsidiary Banks), (ii) any
provision of the Articles of Association or Bylaws of the Subsidiary Banks (iii)
any material  provision  of any loan  agreement,  security or pledge  agreement,
mortgage,  indenture, lease, contract,  agreement or other instrument applicable
to Pacific or the Pacific  Subsidiaries or their respective assets,  operations,
properties  or  businesses  now  conducted or  heretofore  conducted or (iv) any
permit, concession,  grant, franchise, license,  authorization,  judgment, writ,
injunction,  order,  decree,  award,  statute,  federal,  state  or  local  law,
ordinance,  rule or regulation of any court,  arbitrator or any federal,  state,
municipal or other governmental department, commission, board, bureau, agency or
instrumentality  applicable  to  Pacific,  the  Pacific  Subsidiaries  or  their




                                      A-15

<PAGE>



respective  assets,  operations,  properties  or  businesses  now  conducted  or
heretofore conducted, which noncompliance or violation would, individually or in
the aggregate,  reasonably be  anticipated to have a material  adverse effect on
the business results of operations,  financial condition or (insofar as they can
reasonably be foreseen) prospects of Pacific taken as a whole.

         (b) The execution,  delivery and (provided the required  regulatory and
shareholder  approvals are obtained) performance of this Agreement and the other
agreements  contemplated  hereby,  including,  but  not  limited  to the  Merger
Agreement,  and the  consummation of the  transactions  contemplated  hereby and
thereby  will not  conflict  with,  or  result,  by itself or with the giving of
notice or the  passage  of time,  in any  violation  of or  default or loss of a
benefit under,  (i) any provision of the Articles of  Incorporation or Bylaws of
Pacific and the Pacific Subsidiaries (other than the Subsidiary Banks), (ii) any
provision  of the Articles of  Association  or Bylaws of the  Subsidiary  Banks,
(iii) any  material  provision  of any  mortgage,  indenture,  lease,  contract,
agreement or other instrument applicable to Pacific, the Pacific Subsidiaries or
their  assets,  operations,  properties  or  businesses,  or  (iv)  any  permit,
concession,   grant,  franchise,   license,   authorization,   judgment,   writ,
injunction,   order,  decree,  statute,  law,  ordinance,   rule  or  regulation
applicable to Pacific,  the Pacific  Subsidiaries  or their assets,  operations,
properties or businesses.

         SECTION 3.05  Financial Statements.

         (a) Pacific has  furnished to SBB true and  complete  copies of (i) the
audited consolidated balance sheets of Pacific as of December 31, 1996 and 1997,
and the related audited consolidated statements of income,  stockholders' equity
and cash flows for the years ended  December  31, 1995,  1996 and 1997,  (ii) an
unaudited  consolidated  balance sheet of Pacific as of March 31, 1998,  and the
related unaudited  consolidated  statement of income for the three-month  period
ended March 31, 1998 (such balance sheets and the related  statements of income,
stockholders'  equity and cash flows are collectively  referred to herein as the
"Pacific Financial Statements"). Except as described in the notes to the Pacific
Financial  Statements,  the Pacific Financial  Statements fairly present, in all
material  respects,  the  consolidated  financial  position of Pacific as of the
respective  dates thereof and the results of operations and changes in financial
position of Pacific for the periods then ended,  in  conformity  with  generally
accepted  accounting  principles  ("GAAP"),  applied on a basis  consistent with
prior  periods  (subject,  in  the  case  of  the  unaudited  interim  financial
statements, to normal year-end adjustments and the fact that they do not contain
all of the footnote  disclosures  required by GAAP),  except as otherwise  noted
therein,  and the accounting records underlying the Pacific Financial Statements
accurately  and fairly  reflect in all  material  respects the  transactions  of
Pacific.   The  Pacific  Financial  Statements  do  not  contain  any  items  of
extraordinary  or  nonrecurring  income or any other  income  not  earned in the
ordinary course of business except as expressly specified therein.

         (b)  Pacific  has  furnished,  or has  caused the  Subsidiary  Banks to
furnish,  to SBB with true and complete  copies of the Report of  Condition  and
Income ("Call  Reports") for each of the Subsidiary  Banks for the periods ended
December  31,  1996,  December  31, 1997 and March 31,  1998.  Such Call Reports
fairly  presents,  in all  material  respects,  the  financial  position  of the
Subsidiary  Banks and the results of their  operations  at the dates and for the
periods  indicated in conformity  with the  Instructions  for the Preparation of
Call Reports as  promulgated by  applicable  regulatory  authorities.  The  Call




                                      A-16

<PAGE>



Reports do not contain any items of special or nonrecurring  income or any other
income  not  earned in the  ordinary  course  of  business  except as  expressly
specified therein. Each of the Subsidiary Banks has calculated its allowance for
loan  losses in  accordance  with GAAP,  which  includes  regulatory  accounting
principles ("RAP") where applicable,  as applied to banking  institutions and in
accordance with all applicable rules and  regulations.  To the best knowledge of
Pacific,  the allowance for loan losses account for each of the Subsidiary Banks
is, and as of the Closing  Date will be,  adequate in all  material  respects to
provide for all losses,  net of recoveries  relating to loans previously charged
off, on all outstanding loans of each such Subsidiary Bank.

         SECTION 3.06  Undisclosed  Liabilities.  Neither Pacific nor any of the
Pacific  Subsidiaries  has  any  material  liability  or  obligation,   accrued,
absolute,  contingent or otherwise and whether due or to become due  (including,
without  limitation,  unfunded  obligations  under any  service  recognition  or
severance  agreement,  whether  written or oral, or Pacific  Employee  Plans (as
defined in Section 3.32 hereof) or material  liabilities  for federal,  state or
local taxes or assessments or material  liabilities under any agreement that are
not reflected in or disclosed in the Pacific  Financial  Statements,  except (i)
those  liabilities and expenses  incurred in the ordinary course of business and
consistent  with  prudent  business  practices  since  the  date of the  Pacific
Financial Statements or (ii) as disclosed on Schedule 3.06.

         SECTION 3.07  Litigation.  Except as set forth on Schedule 3.07,  there
are  no  actions,  claims,  suits,  investigations,   reviews  or  other  legal,
quasi-judicial or  administrative  proceedings of any kind or nature now pending
or, to the best knowledge of Pacific,  threatened  against or affecting Pacific,
any of the Pacific  Subsidiaries  or any of their  respective  current or former
officers and directors  (while acting in such capacity) at law or in equity,  or
by or before any federal,  state or  municipal  court or other  governmental  or
administrative department, commission, board, bureau, agency or instrumentality,
domestic  or  foreign,   that  in  any  manner  involves  Pacific,  the  Pacific
Subsidiaries  or any of their  current or former  officers or  directors  (while
acting in such capacity) or any of their  properties or capital stock that would
reasonably be anticipated to result in a Material Adverse Change with respect to
Pacific or materially and adversely affect the transactions contemplated by this
Agreement, and Pacific does not know or have any reason to be aware of any basis
for the same. No legal action, suit or proceeding or judicial, administrative or
governmental   investigation  is  pending  or,  to  the  knowledge  of  Pacific,
threatened against Pacific or any of the Pacific Subsidiaries that questions the
validity of this Agreement or the agreements contemplated hereby, including, but
not limited  to, the Merger  Agreement,  or any actions  taken or to be taken by
Pacific pursuant hereto or thereto or seeks to enjoin or otherwise  restrain the
transactions contemplated hereby or thereby.

         SECTION 3.08 Consents and Approvals. Pacific's Board of Directors (at a
meeting called and duly held) has resolved,  subject to its fiduciary  duties to
the  shareholders  of Pacific,  to recommend  approval and adoption by Pacific's
shareholders of the Merger, this Agreement and the Merger Agreement.  Except for
shareholder  and regulatory  approvals and except as disclosed in Schedule 3.08,
no approval, consent, order or authorization of, or registration, declaration or
filing with, any governmental  authority or other third party is required on the
part of Pacific in connection  with the  execution,  delivery or  performance of
this Agreement or the agreements contemplated hereby, including, but not limited




                                      A-17

<PAGE>



to, the Merger  Agreement,  or the  consummation by Pacific of the  transactions
contemplated hereby or thereby.

         SECTION  3.09  Title  to  Assets.  Pacific  and  each  of  the  Pacific
Subsidiaries has good and indefeasible title to all of its assets and properties
including,  without limitation, all personal and intangible properties reflected
in the Pacific Financial  Statements or acquired subsequent thereto,  subject to
no liens,  mortgages,  security interests,  encumbrances or charges of any kind,
except (i) as described in Schedule 3.09, (ii) as noted in the Pacific Financial
Statements,  or as set forth in the documents  delivered to SBB pursuant to this
Section 3.09, (iii) statutory liens not yet delinquent, (iv) consensual landlord
liens, (v) minor defects and  irregularities  in title and encumbrances  that do
not  materially  impair the use thereof for the purpose for which they are held,
(vi) pledges of assets in the ordinary course of business to secure public funds
deposits,  and (vii) those assets and  properties  disposed of for fair value in
the  ordinary  course  of  business  since the  dates of the  Pacific  Financial
Statements.  Schedule 3.09 includes a copy of the title policy of insurance with
respect  to each  parcel  of real  property  owned by  Pacific  and the  Pacific
Subsidiaries.

         SECTION 3.10 Absence of Certain Changes or Events.  Except as disclosed
on Schedule  3.10,  since  December 31,  1997,  Pacific,  including  the Pacific
Subsidiaries,  has conducted  its business  only in the ordinary  course and has
not,  other than in the  ordinary  course of business and  consistent  with past
practices and safe and sound banking practices:

                 A. Incurred any  obligation or  liability,  absolute,  accrued,
         contingent  or  otherwise,   whether  due  or  to  become  due,   which
         individually or in the aggregate,  has had a material adverse effect on
         the business,  results of operations,  financial condition, or (insofar
         as they can  reasonably  be  foreseen)  prospects  of  Pacific  and the
         Pacific  Subsidiaries  taken as a whole,  except for deposits taken and
         federal funds  purchased and current  liabilities for trade or business
         obligations;

                 B.  Discharged or satisfied  any lien, charge or encumbrance or
         paid any obligation  or liability, whether  absolute or contingent, due
         or to become due;

                 C.   Declared  or  made  any  payment  of  dividends  or  other
         distribution to its shareholders, or purchased, retired or redeemed, or
         obligated  itself to purchase,  retire or redeem,  any of its shares of
         capital stock or other securities;

                 D. Issued,  reserved for issuance,  granted, sold or authorized
         the issuance of any shares of its capital stock or other  securities or
         subscriptions,  options,  warrants, calls, rights or commitments of any
         kind relating to the issuance thereto;

                 E.  Acquired any capital  stock or other equity  securities  or
         acquired  any equity or  ownership  interest in any bank,  corporation,
         partnership  or  other  entity   (except  (i)  through   settlement  of
         indebtedness,  foreclosure,  or the exercise of creditors'  remedies or
         (ii) in a fiduciary capacity, the ownership of which does not expose it
         to any liability  from the business,  operations or liabilities of such
         person);




                                      A-18

<PAGE>



                 F. Mortgaged,  pledged or subjected to lien,  charge,  security
         interest or any other  encumbrance or restriction  any of its property,
         business or assets,  tangible or intangible  except (i) as described in
         Schedule  3.09,  (ii)  statutory   liens  not  yet  delinquent,   (iii)
         consensual  landlord liens,  (iv) minor defects and  irregularities  in
         title and  encumbrances  that do not materially  impair the use thereof
         for the  purpose  for which  they are held,  (v)  pledges  of assets to
         secure public funds deposits,  and (vi) for those assets and properties
         disposed  of for fair value  since the dates of the  Pacific  Financial
         Statements.

                 G. Sold, transferred, leased to others or otherwise disposed of
         any of its  assets or canceled  or  compromised any  debt or claim,  or
         waived or released any right or claim of material value;

                 H. Terminated,  canceled or surrendered, or received any notice
         of or threat of termination or cancellation  of any contract,  lease or
         other agreement or suffered any damage, destruction or loss (whether or
         not  covered by  insurance),  which,  in any case or in the  aggregate,
         would  have a  material  adverse  effect on the  business,  results  of
         operations,  financial condition, or (insofar as they can reasonably be
         foreseen) prospects of Pacific and the Pacific  Subsidiaries taken as a
         whole;

                 I. Disposed of, permitted to lapse,  transferred or granted any
         rights under,  or entered into any  settlement  regarding the breach or
         infringement  of,  any  United  States or  foreign  license  or Pacific
         Proprietary  Right (as defined in Section  3.15 hereof) or modified any
         existing rights with respect thereto;

                 J.  Made any  change in the rate of  compensation,  commission,
         bonus or other  direct or  indirect  remuneration  payable,  or paid or
         agreed or orally  promised  to pay,  conditionally  or  otherwise,  any
         bonus, extra compensation,  pension or severance or vacation pay, to or
         for  the  benefit  of  any of its  shareholders,  directors,  officers,
         employees  or agents,  or entered  into any  employment  or  consulting
         contract or other  agreement with any director,  officer or employee or
         adopted,  amended in any material  respect or  terminated  any pension,
         employee  welfare,  retirement,  stock  purchase,  stock option,  stock
         appreciation rights, termination,  severance, income protection, golden
         parachute,  savings or profit-sharing  plan (including trust agreements
         and   insurance   contracts   embodying   such  plans),   any  deferred
         compensation,  or collective bargaining agreement,  any group insurance
         contract or any other  incentive,  welfare or employee  benefit plan or
         agreement maintained by it for the benefit of its directors,  employees
         or former employees,  except (i) compensation  adjustments contemplated
         within  Pacific's  1998  budget and  approved  in advance by SBB (which
         approval shall not be unreasonably  withheld),  (ii) employee severance
         benefits  contemplated  by Section 12.16 of this  Agreement,  and (iii)
         periodic increases consistent with past practices;

                 K. Except for improvements  or betterments relating  to Pacific
         Properties (as defined  in  Section  3.19  hereof),  made  any  capital
         expenditures or capital  additions  or  betterments  in  excess  of  an
         aggregate of $1,000,000;





                                      A-19

<PAGE>



                 L. Instituted,  had instituted against it, settled or agreed to
         settle  any  litigation,  action  or  proceeding  before  any  court or
         governmental body, other than routine collection suits instituted by it
         to collect  amounts owed or suits in which the amount in controversy is
         less than $100,000;

                 M. Permitted any change,  event or condition  that, in any case
         or in the  aggregate,  has caused or may  result in a Material  Adverse
         Change,  or any  Material  Adverse  Change  in  earnings  or  costs  or
         relations  with its  employees,  agents,  depositors,  loan  customers,
         correspondent banks or suppliers;

                 N. Except for the  transactions contemplated by  this Agreement
         or as otherwise  permitted hereunder, entered  into any transaction, or
         entered into, modified or amended any contract or commitment;

                 O. Entered into or given any promise, assurance or guarantee of
         the payment,  discharge or  fulfillment  of any  undertaking or promise
         made by any person,  firm or  corporation  other than letters of credit
         issued in the ordinary course of business;

                 P. Sold, or knowingly disposed of, or otherwise divested itself
         of the  ownership,  possession,  custody or control,  of any  corporate
         books or records of any nature that, in accordance  with sound business
         practice,  normally  are retained for a period of time after their use,
         creation or receipt, except at the end of the normal retention period;

                 Q. Made any, or  acquiesced with any,  change in any accounting
         methods, principles or  material practices, except  as required by GAAP
         or RAP;

                 R. Sold  (provided,  however,  that  payment at maturity is not
         deemed  a sale)  any  investment  securities  in a  single  transaction
         involving  a book  gain or loss of more than  $100,000  on such sale or
         purchased  any  investment  securities,  other than  purchases  of U.S.
         Treasury securities with a maturity of two years or less;

                 S. Made,  renewed,  extended the maturity of, or altered any of
         the material  terms of any criticized  loan to any single  borrower and
         his related interests without regard to whether such transaction was in
         the ordinary  course of business or whether it was consistent with past
         or safe and sound banking practices; or

                 T. Entered into any agreement or made any commitment whether in
         writing or otherwise  to take any  of the types  of action described in
         subsections A. through S. above.

         SECTION 3.11 Leases, Contracts and Agreements. Schedule 3.11 sets forth
a complete listing of all leases, subleases,  licenses, contracts and agreements
to which  Pacific,  including any of the Pacific  Subsidiaries,  is a party (the
"Pacific  Contracts"),  and which (i) relate to real property used by Pacific in
its  operation,  (ii)  involve  payments  to or by Pacific in excess of $100,000
during  the  term  of  such  Pacific  Contracts   (exclusive  of  unfunded  loan
commitments and letters  of credit issued  by Pacific),  or  (iii)  involve  any




                                      A-20

<PAGE>



unfunded  loan  commitments  and letters of credit  issued by Pacific  where the
borrower's  total  direct and indirect  indebtedness  to Pacific is in excess of
$2,000,000.  True and correct copies of all such Pacific  Contracts  (other than
unfunded loan  commitments and letters of credit issued by Pacific) are included
with Schedule 3.11. For the purposes of this  Agreement,  the Pacific  Contracts
shall be deemed not to include  loans made by,  Federal  funds sold or purchased
by,  repurchase  agreements  made by, spot  foreign  exchange  transactions  of,
bankers  acceptances of or deposits by Pacific.  Except as set forth in Schedule
3.11, no participations or loans have been sold which have buy back, recourse or
guaranty provisions which create contingent or direct liabilities of Pacific. To
the  knowledge of Pacific,  all of the Pacific  Contracts  are legal,  valid and
binding  obligations  of the parties to the  Pacific  Contracts  enforceable  in
accordance with their terms,  subject to the effects of bankruptcy,  insolvency,
reorganization,  moratorium or other similar laws relating to creditors'  rights
generally and to general equitable principles, and are in full force and effect.
Except as described in Schedule 3.11, all rent and other payments by Pacific and
any Pacific  Subsidiary  under the Pacific  Contracts are current,  there are no
existing  defaults  by  Pacific  or any  Pacific  Subsidiary  under the  Pacific
Contracts  and no  termination,  condition  or other  event has  occurred  which
(whether with or without notice, lapse of time or the happening or occurrence of
any other event) would constitute a default. Pacific and each Pacific Subsidiary
has a good and indefeasible  leasehold  interest in each parcel of real property
leased by it free and clear of all mortgages,  pledges, liens,  encumbrances and
security interests.

         SECTION  3.12  Taxes.  Pacific  has  duly  and  timely  filed  with the
appropriate Federal,  state and local governmental  agencies all tax returns and
reports required to be filed,  including,  without limitation,  income,  excise,
property, sales, use, franchise,  value added,  unemployment,  employees' income
withholding and social  security  taxes,  imposed by the United States or by any
foreign country or by any state, municipality, subdivision or instrumentality of
the United States or of any foreign country,  or by any other taxing  authority,
and has paid, or has established adequate reserves for the payment of, all taxes
and assessments  that are or are claimed to be due,  payable or owed by Pacific,
or for  which  Pacific  may  have  liability,  whether  as a  result  of its own
activities or by virtue of its affiliation  with other entities and all interest
and penalties thereon, whether disputed or not. All such tax returns and reports
are accurately  prepared and all deposits  required by law to be made by Pacific
with respect to employees' withholding taxes have been duly made. Pacific is not
and has not been  delinquent  in the  payment of any  foreign or  domestic  tax,
assessment or governmental  charge or deposit and has no tax deficiency or claim
outstanding, proposed or assessed against it, and, to Pacific's knowledge, there
is no basis for any such  deficiency  or claim.  Except as set forth in Schedule
3.12, within the last six (6) years, Pacific's Federal income tax return has not
been audited or examined and no such audit is currently pending or, to Pacific's
knowledge,  threatened.  Pacific has not been granted any extension of time with
respect  to the date on which any tax  return  not yet filed was or is due to be
filed by or with  respect to Pacific or any waiver or  agreement  by Pacific for
the extension of time for the assessment or collection of any tax. Except as set
forth in  Schedule  3.12,  Pacific  (i) within  the past six (6) years,  has not
committed any violation of any applicable  Federal,  state, local or foreign tax
laws, and (ii) with respect to all prior years,  has not committed any violation
of any applicable  Federal,  state,  local or foreign tax laws that is likely to
result in a Material Adverse Change with respect to Pacific.




                                      A-21

<PAGE>



         The amounts set up as provisions  for current or deferred  taxes on the
Pacific  Financial  Statements are  sufficient in all material  respects for the
payment of all unpaid  Federal,  state,  county,  local,  foreign or other taxes
(including  any interest or penalties) of or on behalf of Pacific  applicable to
the  periods  covered by the  Pacific  Financial  Statements,  and all years and
periods  prior  thereto.  True and  complete  copies of the  Federal  income tax
returns of Pacific as filed with the  Internal  Revenue  Service (the "IRS") for
the years ended December 31, 1995, 1996, and 1997, have been delivered to SBB.

         SECTION 3.13 Insurance. Schedule 3.13 contains an accurate and complete
list and brief description of all policies of insurance,  including fidelity and
bond  insurance,  of  Pacific,  including  the  Pacific  Subsidiaries.  All such
policies (a) are valid, outstanding and enforceable except as enforceability may
be   limited   by   bankruptcy,    conservatorship,    insolvency,   moratorium,
reorganization,  receivership,  or similar laws and judicial decisions affecting
the rights of creditors  generally and by general  principles of equity (whether
applied  in a  proceeding  at law or  equity),  (b) will not in any  significant
respect  be  affected  by,  and will not  terminate  or lapse by reason  of, the
transactions contemplated by this Agreement, and (c) are presently in full force
and effect,  no notice has been received of the  cancellation,  or threatened or
proposed  cancellation,  of any such policy and there are no unpaid premiums due
thereon.  Pacific,  including the Pacific  Subsidiaries,  is not in default with
respect  to the  provisions  of any such  policy  and has not failed to give any
notice or present any claim  thereunder in a due and timely  fashion.  Except as
set forth on Schedule 3.13, neither Pacific nor any of the Pacific  Subsidiaries
has been refused any insurance with respect to its assets or operations, nor has
its  insurance  been limited by any  insurance  carrier to which Pacific and the
Pacific  Subsidiaries has applied for any such insurance within the last two (2)
years. Each property of Pacific, including the Pacific Subsidiaries,  is insured
for the benefit of Pacific in amounts  deemed  adequate by Pacific's  management
against risks customarily  insured against.  There have been no claims under any
fidelity  bonds of Pacific or any of the  Pacific  Subsidiaries  within the last
three (3) years, and Pacific is not aware of any facts that would form the basis
of a claim under such bonds.

         SECTION 3.14 No Adverse Change. Except as disclosed in the Schedules to
this Agreement or in the  representations  and  warranties  made in this Article
III, there has not been any Material Adverse Change since December 31, 1997, nor
has any event or  condition  occurred  that has resulted in, or has a reasonable
possibility  of  resulting  in the  future,  in a Material  Adverse  Change with
respect to Pacific.

         SECTION 3.15 Patents, Trademarks and Copyrights. Except as disclosed in
Schedule 3.15,  Pacific and the Pacific  Subsidiaries  do not own or require the
use of  any  patent,  patent  application,  patent  right,  invention,  process,
trademark (whether registered or unregistered), trademark application, trademark
right,  trade name,  service name,  service mark,  copyright or any trade secret
("Pacific  Proprietary  Rights") for their respective  businesses or operations,
except for licensed  computer  software.  To the  knowledge of Pacific,  neither
Pacific nor any of the Pacific  Subsidiaries  are  infringing  upon or otherwise
acting adversely to any Pacific  Proprietary  Right owned by any other person or
persons.  There is no claim or action  by any such  person  pending,  or, to the
knowledge of Pacific, threatened, with respect thereto.





                                      A-22

<PAGE>



         SECTION 3.16 Transactions with Certain Persons and Entities.  Except as
disclosed in Schedule 3.16, neither Pacific nor any of the Pacific  Subsidiaries
owe any amount to (excluding deposit  liabilities),  or have any loan (excluding
loans to participants  from the Pacific Capital 401(k) Plan),  contract,  lease,
commitment  or other  obligation  from or to any of the  respective  present  or
former  directors or executive  officers  (other than  compensation  for current
services not yet due and payable and  reimbursement  of expenses  arising in the
ordinary course of business) of Pacific and the Pacific  Subsidiaries,  and none
of such persons owes any amount to Pacific or the Pacific  Subsidiaries.  Except
as set forth in Schedule 3.16, there are no understandings,  agreements (whether
written or oral), instruments,  commitments,  perquisites, extensions of credit,
tax sharing or allocation agreements or other contractual agreements of any kind
between or among Pacific and the Pacific Subsidiaries, whether on its own behalf
or in its capacity as trustee or custodian for the funds of any employee benefit
plan (as defined in the Employee  Retirement  Income  Security  Act of 1974,  as
amended  ("ERISA")),  and any present or former officers or directors of Pacific
or the  Pacific  Subsidiaries.  True and  correct  copies  of any  such  written
understandings, agreements, instruments, etc., are included with Schedule 3.16.

         SECTION 3.17 Evidences of  Indebtedness.  All evidences of indebtedness
and leases that are reflected as assets of Pacific and the Pacific  Subsidiaries
are, to Pacific's best knowledge,  legal,  valid and binding  obligations of the
respective  obligors  thereof,  enforceable in accordance with their  respective
terms (except as limited by applicable bankruptcy,  insolvency,  reorganization,
moratorium and similar laws affecting  creditors  generally and the availability
of injunctive relief, specific performance and other equitable remedies) and are
not subject to any known or threatened  defenses,  offsets or counterclaims that
may be asserted against Pacific,  the Pacific Subsidiaries or the present holder
thereof,  except as  disclosed  in Schedule  3.17.  The credit files of Pacific,
including the Pacific Subsidiaries,  contain all material information (excluding
general,  local or national industry,  economic or similar  conditions) known to
Pacific that is  reasonably  required to evaluate in accordance  with  generally
prevailing  practices  in the banking  industry the  collectibility  of the loan
portfolio of Pacific  (including  loans that will be  outstanding if any of them
advances funds they are obligated to advance).  Pacific has disclosed all of the
substandard,  doubtful, loss, nonperforming or loans identified as problem loans
on the internal watch list of each of the  Subsidiary  Banks, a copy of which as
of May 31, 1998, has been provided to SBB. Except as disclosed in Schedule 3.17,
Pacific is not aware of, nor has Pacific received notice of, any past or present
conditions,  events,  activities,  practices or  incidents  that may result in a
violation of any  Environmental Law (as defined in Section 12.08(D) hereof) with
respect to any real property securing any indebtedness  reflected as an asset of
Pacific or any Pacific Subsidiary.

         SECTION 3.18 Condition of Assets.  All tangible assets used by Pacific,
including the Pacific  Subsidiaries,  are in good operating condition,  ordinary
wear and tear excepted, and conform with all applicable ordinances, regulations,
zoning and other laws, whether Federal, state or local. None of Pacific's or the
Pacific  Subsidiaries'  premises  or  equipment  are in need of  maintenance  or
repairs  other  than  ordinary  routine  maintenance  and  repairs  that are not
material in nature or cost.

         SECTION 3.19 Environmental Compliance.




                                      A-23

<PAGE>



         (a)  Pacific is not aware of, nor has Pacific  received  notice of, any
past or present conditions, events, activities,  practices or incidents that are
in violation of  Environmental  Laws (as defined in Section  12.08(D) hereof) or
that  may  interfere  with or  prevent  Pacific's  continued  compliance  in all
respects with all Environmental Laws.

         (b) Pacific and the Pacific  Subsidiaries  have  obtained  all permits,
licenses and authorizations that are required under any Environmental Laws.

         (c) To  Pacific's  knowledge,  no  Hazardous  Materials  (as defined in
Section  12.08(E)  hereof)  exist  on,  about,  or  within  any of  the  Pacific
Properties (as defined in this Section 3.19), nor, to Pacific's knowledge,  have
any  Hazardous  Materials  previously  existed on, about or within or been used,
generated,  stored,  transported,  disposed  of, on or released  from any of the
Pacific  Properties in violation of any Environmental Law. The use that Pacific,
including  the  Pacific  Subsidiaries,  makes and intends to make of the Pacific
Properties  will not  result in the use,  generation,  storage,  transportation,
accumulation,  disposal or release of any Hazardous  Material on, in or from any
of the Pacific Properties in violation of any Environmental Law.

         (d) There is no  action,  suit,  proceeding,  investigation  or inquiry
before any court,  administrative agency or other governmental authority pending
or, to Pacific's knowledge, threatened against Pacific or any Pacific Subsidiary
relating  in  any  way to any  Environmental  Law.  To  the  best  of  Pacific's
knowledge,  neither  Pacific nor any Pacific  Subsidiary  has any  liability for
remedial  action  under any  Environmental  Law.  Pacific has not  received  any
request  for  information  by any  governmental  authority  with  respect to the
condition,  use or  operation of any of the Pacific  Properties  nor has Pacific
received any notice of any kind from any governmental  authority or other person
with respect to any  violation of or claimed or potential  liability of any kind
under any Environmental Law (including,  without limitation,  any letter, notice
or inquiry from any person or governmental  entity informing  Pacific that it is
or may  be  liable  in any  way  under  any  Environmental  Law,  or  requesting
information to enable such a determination to be made).

         (e) As used in this  Section  3.19,  the  term  "Pacific  Property"  or
"Pacific  Properties" shall include all real property  currently owned or leased
by Pacific or any of the Pacific  Subsidiaries,  including,  but not limited to,
properties  that Pacific or any Pacific  Subsidiary has foreclosed on as well as
the Subsidiary  Banks'  respective  banking  premises and all  improvements  and
fixtures thereon. The phrase "to Pacific's knowledge" or similar phrases as used
in this  Section  3.19 shall mean the  current  actual  knowledge  of  executive
management of Pacific.

         SECTION   3.20   Regulatory   Compliance.    All   reports,    records,
registrations,  statements,  notices and other documents or information required
to be filed by  Pacific  and the  Pacific  Subsidiaries  during the last two (2)
years  with  any  federal  or  state  regulatory  authority  including,  without
limitation,  the Federal  Reserve,  the OCC, the FDIC and the IRS have been duly
and timely filed and all information and data contained in such reports, records
or other documents are true, accurate, correct and complete. Except as disclosed
on Schedule  3.20,  Pacific and the  Pacific  Subsidiaries  are not now nor have
been,  within the past six (6) years subject to any memorandum of understanding,
cease and desist order, written agreement  or other formal administrative action




                                      A-24

<PAGE>



with any such  regulatory  bodies.  Pacific does not believe any such regulatory
bodies have any  present  intent to place  Pacific or the  Pacific  Subsidiaries
under any new administrative action. Except as set forth on Schedule 3.20, there
are no  actions or  proceedings  pending or  threatened  against  Pacific or any
Pacific  Subsidiary by or before any such regulatory bodies or any other nation,
state  or  subdivision  thereof,  or  any  other  entity  exercising  executive,
legislative,  judicial,  regulatory or administrative functions of or pertaining
to government.

         SECTION 3.21 Securities and Exchange  Commission  Reports.  Pacific has
previously made available to SBB an accurate and complete copy of each (a) final
registration  statement,  prospectus,  report,  schedule  and  definitive  proxy
statement  filed  since  January  1, 1995 by  Pacific  with the  Securities  and
Exchange  Commission  (the "S.E.C.")  pursuant to the Securities Act of 1933, as
amended (the  "Securities  Act"),  or the  Securities  Exchange Act of 1934,  as
amended  (the  "Exchange  Act"),  and  prior to the date  hereof  (the  "Pacific
Reports"),  and (b)  communication  mailed by Pacific to its shareholders  since
January  1,  1995  and  prior  to the  date  hereof,  and no  such  registration
statement,  prospectus,  report,  schedule,  proxy  statement  or  communication
contained  any  untrue  statement  of a  material  fact or  omitted to state any
material  fact  required to be stated  therein or necessary in order to make the
statements  therein,  in light of the circumstances in which they were made, not
misleading, except that information as of a later date shall be deemed to modify
information  as of an earlier date.  Since  January 1, 1995,  Pacific has timely
filed all Pacific Reports and other  documents  required to be filed by it under
the Securities Act and the Exchange Act, and, as of their respective  dates, all
Pacific Reports  complied in all material  respects with the published rules and
regulations of the S.E.C. with respect thereto.

         SECTION 3.22 Absence of Certain Business Practices. Except as set forth
on Schedule  3.22,  neither  Pacific,  any of the Pacific  Subsidiaries  nor any
officer, employee or agent of Pacific or the Pacific Subsidiaries, nor any other
person acting on their behalf, has, directly or indirectly,  within the past ten
(10) years, given or agreed to give any gift or similar benefit to any customer,
supplier,  governmental  employee or other person who is or may be in a position
to help or hinder the  business  of  Pacific  as a whole (or  assist  Pacific in
connection  with any  actual or  proposed  transaction)  that (i) would  subject
Pacific  or any of the  Pacific  Subsidiaries  to any  damage or  penalty in any
civil, criminal or governmental  litigation or proceeding,  (ii) if not given in
the past,  would have  resulted in a Material  Adverse  Change  with  respect to
Pacific,  or (iii) if not  continued  in the future  would  result in a Material
Adverse  Change  with  respect to Pacific  or would  subject  Pacific to suit or
penalty in any private or governmental litigation or proceeding.

         SECTION 3.23 Registration Statement; Joint Proxy  Statement/Prospectus.
None of the  information  supplied  or to be  supplied  by Pacific or any of its
directors,  officers,  employees  or agents for  inclusion  in the  Registration
Statement    (as   defined   in   Section    5.03(c))   or   the   Joint   Proxy
Statement/Prospectus  (as defined in Section 5.03(c)),  or any amendment thereof
or supplement thereto,  will be false or misleading with respect to any material
fact,  or omit to  state  any  material  fact  necessary  in  order  to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading,  or at the time of the Pacific Shareholders' Meeting and the SBB
Shareholders' Meeting, be false or misleading with respect to any material fact,
or omit to state any material  fact  necessary  to correct any  statement in any
earlier communication with  respect to the  solicitation  of any  proxy  for the




                                      A-25

<PAGE>



Pacific Shareholders'  Meeting and the SBB Shareholders'  Meeting. All documents
that  Pacific is  responsible  for filing with any  regulatory  or  governmental
agency in connection  with the Merger will comply in all material  respects with
the provisions of applicable law.

         SECTION 3.24 Dissenting  Shareholders.  Except as set forth on Schedule
3.24,  Pacific has no  knowledge  of any plan or intention on the part of any of
the shareholders of Pacific to make written demand for payment of the fair value
of their  shares of Pacific  Common Stock in the manner  provided by  applicable
law.

         SECTION 3.25 Pooling of  Interests.  As of the date of this  Agreement,
Pacific has no reason to believe  that the Merger will not qualify as a "pooling
of interests" for accounting purposes.

         SECTION 3.26 Books and Records.  The minute  books,  stock  certificate
books and stock  transfer  ledgers of Pacific and the Pacific  Subsidiaries  (i)
have been kept accurately in the ordinary course of business,  (ii) are complete
and correct in all material respects,  (iii) reflect  transactions  representing
bona fide transactions,  and (iv) do not fail to reflect transactions  involving
the business of Pacific or the Pacific  Subsidiaries  that were required to have
been set forth therein and that have not been accurately so set forth.

         SECTION 3.27 Forms of Instruments,  Etc. Pacific will make available to
SBB upon written request copies of all standard forms of notes, mortgages, deeds
of trust and other  routine  documents  of a like  nature  used on a regular and
recurring  basis by Pacific and the Pacific  Subsidiaries in the ordinary course
of their businesses.

         SECTION  3.28  Fiduciary  Responsibilities.   Except  as  disclosed  in
Schedule 3.28,  Pacific and the Subsidiary  Banks have performed in all material
respects all of their duties as a trustee,  custodian,  guardian or as an escrow
agent in a manner that  complies in all material  respects  with all  applicable
laws, regulations, orders, agreements, instruments and common law standards.

         SECTION 3.29  Guaranties.  None of the  obligations  or  liabilities of
Pacific or the Pacific  Subsidiaries are guaranteed by any other person, firm or
corporation, nor is any outstanding obligation or liability of any other person,
firm or corporation guaranteed by Pacific or the Pacific Subsidiaries, except in
the ordinary course of business,  according to prudent business practices and in
compliance with applicable law.

         SECTION 3.30 Voting Trust or Buy-Sell Agreements.  Pacific is not aware
of any agreement between or among any of its shareholders relating to a right of
first  refusal with respect to the purchase or sale by any such  shareholder  of
capital stock of Pacific or any voting agreement or voting trust with respect to
shares of capital  stock of Pacific  (other  than that  contemplated  by Section
5.20).

         SECTION   3.31   Employee   Relationships.   Pacific  and  the  Pacific
Subsidiaries  (including their respective officers and directors while acting in
such capacities) have complied in all material respects with all applicable laws




                                      A-26

<PAGE>



relating to its relationships with its employees,  and Pacific believes that the
relationships  between Pacific,  including the Pacific  Subsidiaries  (including
their respective  officers and directors while acting in such  capacities),  and
its employees are good. To the knowledge of Pacific, no key executive officer or
manager  of  any  of  the  operations   operated  by  Pacific  and  the  Pacific
Subsidiaries  or any group of employees of Pacific and the Pacific  Subsidiaries
have any present plans to terminate their employment with Pacific or any Pacific
Subsidiary.  Neither  Pacific nor any of the Pacific  Subsidiaries is a party to
any oral or written  contracts  or  agreements  granting  benefits  or rights to
employees  or  any  collective  bargaining  agreement  or  to  any  conciliation
agreement  with the  Department  of  Labor,  the  Equal  Employment  Opportunity
Commission or any federal,  state or local agency that requires equal employment
opportunities  or affirmative  action in  employment.  There are no unfair labor
practice  complaints  pending  against  Pacific,  including  any of the  Pacific
Subsidiaries,  before the National Labor  Relations  Board and no similar claims
pending before any similar state, local or foreign agency.  There is no activity
or proceeding of any labor organization (or representative  thereof) or employee
group to organize any employees of Pacific,  including  any Pacific  Subsidiary,
nor of any strikes,  slowdowns, work stoppages,  lockouts or threats thereof, by
or with respect to any such employees.  Pacific and the Pacific Subsidiaries are
in  compliance  in all material  respects with all  applicable  laws  respecting
employment  and  employment  practices,  terms and  conditions of employment and
wages and hours,  and neither  Pacific nor any of the Pacific  Subsidiaries  are
engaged in any unfair labor practice.

         SECTION 3.32  Employee Benefit Plans.

         (a) Set forth on Schedule 3.32(a) is a complete and correct list of all
"employee  benefit  plans" (as defined in ERISA),  all specified  fringe benefit
plans as defined in Section 6039D of the Code,  and all other bonus,  incentive,
compensation,   deferred  compensation,  profit  sharing,  stock  option,  stock
appreciation  right,  stock bonus,  stock  purchase,  employee stock  ownership,
savings,  severance,  supplemental  unemployment,  layoff,  salary continuation,
retirement,  pension,  health,  life  insurance,  disability,  group  insurance,
vacation,  holiday,  sick  leave,  fringe  benefit or welfare  plan or any other
similar  plan,  agreement,  policy or  understanding  (whether  written or oral,
qualified or nonqualified,  currently  effective or terminated),  and any trust,
escrow  or  other  agreement  related  thereto,   which  (a)  is  maintained  or
contributed  to by Pacific or any Pacific  Subsidiary,  or with respect to which
Pacific  and the  Pacific  Subsidiaries  has  any  liability,  and (b)  provides
benefits,  or  describes  policies  or  procedures  applicable  to any  officer,
employee,  service provider, former officer or former employee of Pacific or any
Pacific Subsidiary,  or the dependents of any such person, regardless of whether
funded (the "Pacific Employee Plans").

         (b) No  Pacific  Employee  Plan is a defined  benefit  plan  within the
meaning of section 3(35) of ERISA.  Pacific has  delivered or made  available to
SBB true, accurate and complete copies of the documents  comprising each Pacific
Employee  Plan, and such other  documents,  records or other  materials  related
thereto  reasonably  requested by SBB. To the best  knowledge of Pacific,  there
have been no prohibited  transactions,  breaches of fiduciary  duty or any other
breaches or violations of any law applicable to the Pacific  Employee Plans that
would  subject SBB or Pacific to any  liabilities.  Each Pacific  Employee  Plan
intended  to be  qualified  under  section  401(a)  of the  Code  has a  current
favorable determination letter  and, to the  best knowledge of Pacific, has been




                                      A-27

<PAGE>



operated in compliance  with  applicable  law and in accordance  with its terms.
However,  Pacific has a ruling request pending with the Internal Revenue Service
that compensation elected to be deferred by employees pursuant to the "Executive
Compensation  Deferral  Plan"  and the  transfer  and  retention  of those  sums
deferred  to the  "Executive  Compensation  Deferral  Trust"  will  result in no
current  inclusion  of the  income  to those  employees  or their  beneficiaries
pursuant to Sections 83, 451 or 402(b) of the Code. There are no pending claims,
lawsuits or actions  relating to any Pacific  Employee Plan (other than ordinary
course  claims for  benefits)  and, to the best  knowledge of Pacific,  none are
threatened. No written or oral representations have been made to any employee or
former employee of Pacific or the Pacific Subsidiaries promising or guaranteeing
any employer payment or funding for the continuation of medical, dental, life or
disability  coverage  for any period of time beyond the end of the current  plan
year  (except to the extent of  coverage  required  under  section  4980B of the
Code).  Compliance  with FAS 106 will not  create  any  material  change  to the
Pacific  Financial  Statements.  Except as required in connection with qualified
plan  amendments  required  by tax  law  changes  and  except  for  those  plans
identified  on  Schedule   3.32(b),   the   consummation  of  the   transactions
contemplated  by this  Agreement  will not  accelerate  the time of  payment  or
vesting,  or increase the amount, of compensation due to any employee,  officer,
former employee or former officer of Pacific or any Pacific Subsidiary.

         (c) With respect to each "employee  benefit plan" (as defined in ERISA)
maintained or contributed to or required to be contributed  to,  currently or in
the past,  by any trade or business with which Pacific is required by any of the
rules  contained  in the Code or ERISA to be treated as a single  employer  (the
"Controlled Group Plans"):

                  (i) To the knowledge of Pacific,  all  Controlled  Group Plans
         that are "group  health  plans" (as defined in the Code and ERISA) have
         been  operated  up to the  Closing  in a  manner  so as to not  subject
         Pacific to any material liability under Section 4980B of the Code; and

                  (ii)  There is no  Controlled  Group  Plan  that is a  defined
         benefit plan (as defined in Section 3(35) of ERISA), nor has there been
         in the last five (5) calendar years.

                  (iii)  There is no  Controlled  Group Plan that is a "multiple
         employer plan" or "multiemployer  plan" (as either such term is defined
         in ERISA), nor has there been in the last five (5) calendar years.

         SECTION 3.33 Interest Rate Risk  Management  Instruments.  All interest
rate swaps,  caps,  floors and option  agreements  and other  interest rate risk
management arrangements,  whether entered into for the account of Pacific or any
Pacific  Subsidiary  or for the  account of a customer of Pacific or any Pacific
Subsidiary,  were  entered  into in the  ordinary  course of  business  and,  to
Pacific's knowledge,  in accordance with prudent banking practice and applicable
rules,   regulations   and  policies  of  any  regulatory   authority  and  with
counterparties believed to be financially responsible at the time and are legal,
valid and binding obligations of Pacific or a Pacific Subsidiary  enforceable in
accordance with their terms (except as may be limited by bankruptcy, insolvency,
moratorium,  reorganization  or similar laws  affecting  the rights of creditors
generally and the availability of equitable remedies), and are in full force and




                                      A-28

<PAGE>



effect.  Pacific and each Pacific Subsidiary have duly performed in all material
respects all of their  material  obligations  thereunder to the extent that such
obligations to perform have accrued;  and, to Pacific's knowledge,  there are no
material  breaches,  violations or defaults or allegations or assertions of such
by any party thereunder.

         SECTION 3.34 Year 2000.

         (a) To the best of  Pacific's  knowledge,  Pacific  and the  Subsidiary
Banks are in compliance  with those certain  guidances and statements  issued by
the  Federal  Financial  Institutions   Examination  Council  (the  "FFIEC")  in
connection with the century date change that will take place on January 1, 2000,
which guidances are dated as of June 1996, May 5, 1997, December 17, 1997, March
17, 1998,  April 10, 1998, and May 13, 1998 (together with any subsequent  FFIEC
issuances  on the Year 2000,  the  "Interagency  Statements").  Pacific  and the
Subsidiary Banks have:

                  (i)  Inventoried  and  assessed  the   technologies  it  uses,
         particularly its computer hardware and software,  to identify potential
         problems areas related to the Year 2000;

                  (ii)  Developed and  implemented  a Year 2000 Plan,  including
         comprehensive   testing  plans,  to  prepare  its  "mission   critical"
         information  technology to: (a) process  date/time data  accurately and
         without  interruption  (including,  but not  limited  to,  calculating,
         comparing,  and sequencing)  from, into, and between the years 1999 and
         2000, and leap year  calculations;  (b) respond to two-digit  year-date
         input  in a  way  that  resolves  the  ambiguity  as  to  century  in a
         disclosed, defined, and predetermined manner; and (c) store and provide
         output of date  information in ways that are unambiguous as to century;
         and

                  (iii)  Commenced the development of, and by September 30, 1998
         will have completed the  development  of,  contingency  plans to ensure
         continuity  of business  in the event of: (a)  failure to complete  any
         tasks  required  by  the  Year  2000  Plan,   such  as  remediation  or
         validation;  or (b) any externally caused business interruption related
         to the century date change.

                  (iv) Taken  commercially  reasonable  steps to investigate and
         test the ability of its "mission  critical"  information  technology to
         share and exchange  date/time data accurately and without  interruption
         or material delay with its key vendors and suppliers.

         (b) If Pacific and the  Subsidiary  Banks have been examined by federal
or state  regulators  for Year 2000  readiness,  they have not received a rating
that would cause delay or denial of any  regulatory  approval of this  Agreement
and the transactions contemplated hereby.

         (c) Pacific's  estimate of the out-of-pocket  expenses payable to third
parties necessary to complete its consolidated  Year 2000 Compliance  efforts is
not in excess of $500,000.





                                      A-29

<PAGE>



         SECTION 3.35  Representations Not Misleading.  To Pacific's  knowledge,
all material  facts  relating to the business  operations,  properties,  assets,
liabilities (contingent or otherwise) and financial condition of Pacific and the
Pacific  Subsidiaries  have been disclosed to SBB in or in connection  with this
Agreement. No representation or warranty by Pacific contained in this Agreement,
nor any  statement,  exhibit or schedule  furnished to SBB by Pacific  under and
pursuant  to, or in  anticipation  of or in  connection  with,  this  Agreement,
contains or will contain on the Closing Date any untrue  statement of a material
fact or  omits or will  omit to  state a  material  fact  necessary  to make the
statements  contained  herein or therein,  in light of the  circumstances  under
which it was or will be  made,  not  misleading  and  such  representations  and
warranties  would  continue to be true and correct  following  disclosure to any
governmental authority having jurisdiction over Pacific or its properties of the
facts and circumstances upon which they were based.  Except as disclosed herein,
there is no matter  that  materially  adversely  affects  Pacific  or  Pacific's
ability to perform the transactions  contemplated by this Agreement or the other
agreements  contemplated  hereby,  or to the  knowledge of Pacific,  will in the
future result in a Material  Adverse Change with respect to Pacific,  other than
general economic  conditions.  No information material to the Merger and that is
necessary  to make the  representations  and  warranties  herein  contained  not
misleading, has been withheld by Pacific.


                                   ARTICLE IV.
                      REPRESENTATIONS AND WARRANTIES OF SBB

         SBB hereby makes the  representations  and warranties set forth in this
Article IV to Pacific.

         SECTION 4.01  Organization and Qualification.

         (a) SBB is a corporation,  duly organized,  validly  existing under the
laws of the State of California, and in good standing under all laws, rules, and
regulations  applicable to corporations located in the State of California.  SBB
is a bank  holding  company  registered  under the BHCA.  SBB has all  requisite
corporate power and authority (including all licenses,  franchises,  permits and
other  governmental  authorizations  as are  legally  required)  to carry on its
business as now being  conducted,  to own,  lease and operate its properties and
assets,  including,  but not limited to, as now owned, leased or operated and to
enter into and carry out its  obligations  under this  Agreement  and the Merger
Agreement.  Schedule  4.01(a) sets forth a complete list of each  Subsidiary (as
defined in Section  12.08(B))  of SBB  (collectively,  the "SBB  Subsidiaries").
Except  as set  forth on  Schedule  4.01(a),  SBB does  not own or  control  any
Affiliate  (as  defined  in  Section   12.08(A)   hereof)  other  than  the  SBB
Subsidiaries, and neither of the SBB Subsidiaries owns or controls any Affiliate
or Subsidiary.  True and complete  copies of the Articles of  Incorporation  and
Bylaws of SBB and the SBB  Subsidiaries,  as amended to date,  certified  by the
Secretary of SBB and each SBB Subsidiary, as applicable,  have been delivered to
Pacific.

         (b) SBB&T is a California banking  corporation duly organized,  validly
existing and in good standing under the laws of the State of  California.  SBB&T
has all  requisite  corporate  power  and  authority  (including  all  licenses,
franchises,  permits  and  other  governmental  authorizations  as  are  legally
required) to carry  on its business  as now being  conducted, to own,  lease and




                                      A-30

<PAGE>



operate its properties and assets,  including, but not limited to, as now owned,
leased or operated.  SBB&T is an insured bank as defined in the FDIA. All of the
issued and  outstanding  shares of capital  stock of SBB&T are owned by SBB free
and clear of all liens, encumbrances,  rights of first refusal, options or other
restrictions of any nature  whatsoever,  and all such shares are duly authorized
and validly  issued and are fully  paid,  nonassessable  and free of  preemptive
rights of any person.  There are no options,  warrants or rights  outstanding to
acquire  any capital  stock of the SBB&T,  and no person or entity has any other
right to  purchase or acquire any  unissued  shares of stock of SBB&T,  nor does
SBB&T have any  obligation of any nature with respect to its unissued  shares of
stock.

         (c) Each of the SBB  Subsidiaries,  other than SBB&T,  is a  California
corporation duly organized, validly existing and in good standing under the laws
of the State of  California,  and in good standing  under all laws,  rules,  and
regulations applicable to corporations located in the State of California.  Each
such SBB Subsidiary has all requisite  corporate power and authority  (including
all licenses,  franchises,  permits and other governmental authorizations as are
legally  required)  to  carry  on  their  respective  businesses  as  now  being
conducted, to own, lease and operate its properties and assets,  including,  but
not  limited  to,  as now  owned,  leased or  operated.  All of the  issued  and
outstanding  shares of capital stock of each such SBB Subsidiary is owned by SBB
free and clear of all liens,  encumbrances,  rights of first refusal, options or
other  restrictions  of any  nature  whatsoever,  and all such  shares  are duly
authorized  and  validly  issued and are fully paid,  nonassessable  and free of
preemptive  rights of any  person.  There  are no  options,  warrants  or rights
outstanding to acquire any capital stock of the SBB  Subsidiaries  and no person
or entity has any other  right to purchase  or acquire  any  unissued  shares of
stock of any of the SBB Subsidiaries,  nor does any such SBB Subsidiary have any
obligation of any nature with respect to its unissued shares of stock.

         (d) The nature of the business of SBB and the SBB  Subsidiaries  do not
require  any  of  them  to be  licensed  or  qualified  to do  business  in  any
jurisdiction other than the State of California. Except as disclosed on Schedule
4.01(d),  neither SBB nor any of the SBB  Subsidiaries  has any equity interest,
direct or  indirect,  in any other bank or  corporation  or in any  partnership,
joint venture or other business enterprise or entity, except as acquired through
settlement of indebtedness,  foreclosure, the exercise of creditors' remedies or
in a  fiduciary  capacity,  and  the  business  carried  on by SBB  and  the SBB
Subsidiaries  has not been  conducted  through  any  other  direct  or  indirect
Subsidiary or Affiliate of SBB or the SBB Subsidiaries.

         (e) Neither SBB nor any of the SBB Subsidiaries that is neither a bank,
a  bank  operating  subsidiary  or  a  bank  service  corporation,  directly  or
indirectly,  engages in any activity prohibited by the Federal Reserve.  Without
limiting the generality of the foregoing,  any equity investment of SBB and each
subsidiary  that is not a bank, a bank  operating  subsidiary  or a bank service
corporation, is not prohibited by the Federal Reserve.

         (f) SBB&T does not,  directly  or  indirectly,  engage in any  activity
prohibited by the Federal Reserve or the California Commissioner.





                                      A-31

<PAGE>



         SECTION 4.02 Execution and Delivery. SBB has taken all corporate action
necessary to  authorize  the  execution,  delivery  and  (provided  the required
regulatory and shareholder approvals are obtained) performance of this Agreement
and the other  agreements  and  documents  contemplated  hereby to which it is a
party, including,  but not limited to, the Merger Agreement.  This Agreement has
been, and the other agreements and documents contemplated hereby, including, but
not  limited  to, the Merger  Agreement,  have been or at Closing  will be, duly
executed by SBB and each  constitutes  the valid and binding  obligation of SBB,
enforceable in accordance with its respective  terms and  conditions,  except as
enforceability  may  be  limited  by  bankruptcy,  conservatorship,  insolvency,
moratorium, reorganization,  receivership or similar laws and judicial decisions
affecting the rights of creditors  generally and by general principles of equity
(whether applied in a proceeding at law or in equity).

         SECTION 4.03 Capitalization. The entire authorized capital stock of SBB
consists of 40,000,000  shares of SBB Common Stock,  15,397,463  shares of which
are fully paid,  validly issued,  nonassessable  and outstanding,  and 1,128,680
additional  shares of which  have been  reserved  for  issuance  to  holders  of
outstanding stock options to purchase shares of SBB Common Stock.  Schedule 4.03
contains a list of each plan administered by SBB or any SBB Subsidiary  pursuant
to which  options to purchase  shares of SBB Common Stock ("SBB Stock  Options")
have been or may be granted (the "SBB Stock Option  Plans"),  including  (i) the
number of outstanding  options with respect to each SBB Stock Option Plan,  (ii)
the  weighted  average  exercise  price per share with respect to each SBB Stock
Option Plan,  (iii) a list of all option  holders with respect to each SBB Stock
Option Plan,  and (iv) the number of vested and unvested SBB Stock  Options with
respect to each such option holder in each SBB Stock Option Plan.  All SBB Stock
Options  were issued and,  upon  issuance  in  accordance  with the terms of the
outstanding option agreements, the shares of SBB Common Stock shall be issued in
compliance with all applicable  securities laws. Except as disclosed in Schedule
4.03,  there  are no (i)  other  outstanding  equity  securities  of any kind or
character,  (ii) outstanding  subscriptions,  options,  convertible  securities,
rights, warrants, calls or other agreements or commitments of any kind issued or
granted by, or binding upon,  SBB to purchase or otherwise  acquire any security
of or  equity  interest  in SBB or  (iii)  outstanding  subscriptions,  options,
rights, warrants,  calls,  convertible securities,  irrevocable proxies or other
agreements or commitments obligating SBB to issue any shares of, restricting the
transfer of or otherwise  relating to shares of its capital  stock of any class.
All of the issued  and  outstanding  shares of SBB  Common  Stock have been duly
authorized,  validly issued and are fully paid and  nonassessable,  and have not
been issued in violation of the preemptive rights of any person.  Such shares of
SBB Common Stock have been issued in full  compliance with applicable law. There
are no restrictions  applicable to the payment of dividends on the shares of SBB
Common  Stock,  except  pursuant to  applicable  laws and  regulations,  and all
dividends declared prior to the date of this Agreement have been paid.

         SECTION 4.04 Compliance with Laws, Permits and Instruments.

         (a) Except as set forth in Schedule 4.04, SBB and the SBB Subsidiaries,
as  applicable,  are in  compliance  with,  and are not in default  (or with the
giving  of notice  or the  passage  of time  will be in  default)  under,  or in
violation  of, (i) any provision of the Articles of  Incorporation  or Bylaws of
SBB or any SBB  Subsidiary,  (ii) any material  provision of any loan agreement,
security or pledge agreement, mortgage, indenture, lease, contract, agreement or




                                      A-32

<PAGE>



other  instrument  applicable to SBB or any SBB  Subsidiary or their  respective
assets,  operations,  properties  or  businesses  now  conducted  or  heretofore
conducted  or  (iii)  any  permit,   concession,   grant,  franchise,   license,
authorization,  judgment,  writ,  injunction,  order,  decree,  award,  statute,
federal,  state  or local  law,  ordinance,  rule or  regulation  of any  court,
arbitrator or any federal,  state,  municipal or other governmental  department,
commission,  board, bureau, agency or instrumentality applicable to SBB, the SBB
Subsidiaries or their respective  assets,  operations,  properties or businesses
now conducted or heretofore  conducted,  which noncompliance or violation would,
individually  or in the aggregate,  reasonably be anticipated to have a material
adverse effect on the business,  results of operations,  financial condition, or
(insofar as they can reasonably be foreseen) prospects of SBB taken as a whole.

         (b) The execution,  delivery and (provided the required  regulatory and
shareholder  approvals are obtained) performance of this Agreement and the other
agreements  contemplated  hereby,  including  but  not  limited  to  the  Merger
Agreement,  and the  consummation of the  transactions  contemplated  hereby and
thereby,  will not  conflict  with,  or result,  by itself or with the giving of
notice or the  passage  of time,  in any  violation  of or  default or loss of a
benefit under,  (i) any provision of the Articles of  Incorporation or Bylaws of
SBB  or any  SBB  Subsidiary,  (ii)  any  material  provision  of any  mortgage,
indenture, lease, contract, agreement or other instrument applicable to SBB, the
SBB Subsidiaries or their assets, operations, properties or businesses, or (iii)
any permit,  concession,  grant, franchise,  license,  authorization,  judgment,
writ,  injunction,  order, decree,  statute, law, ordinance,  rule or regulation
applicable to SBB, the SBB Subsidiaries or their assets, operations,  properties
or businesses.

         SECTION 4.05  Financial Statements.

         (a) SBB has  furnished to Pacific  true and complete  copies of (i) the
audited consolidated balance sheets of SBB as of December 31, 1996 and 1997, and
the related audited consolidated statements of income,  stockholders' equity and
cash  flows  for the years  ended  December  31,  1995,  1996 and 1997,  (ii) an
unaudited  consolidated  balance  sheet of SBB as of  March  31,  1998,  and the
related unaudited  consolidated  statement of income for the three-month  period
ended March 31, 1998 (such balance sheets and the related  statements of income,
stockholders'  equity and cash flows are collectively  referred to herein as the
"SBB  Financial  Statements").  Except  as  described  in the  notes  to the SBB
Financial  Statements,  the SBB  Financial  Statements  fairly  present,  in all
material  respects,  the  consolidated  financial  position  of  SBB  as of  the
respective  dates thereof and the results of operations and changes in financial
position of SBB for the periods then ended, in conformity with GAAP,  applied on
a basis  consistent  with prior periods  (subject,  in the case of the unaudited
interim financial  statements,  to normal year-end adjustments and the fact that
they do not contain all of the footnote disclosures required by GAAP), except as
otherwise noted therein, and the accounting records underlying the SBB Financial
Statements   accurately  and  fairly  reflect  in  all  material   respects  the
transactions  of SBB. The SBB  Financial  Statements do not contain any items of
extraordinary  or  nonrecurring  income or any other  income  not  earned in the
ordinary course of business except as expressly specified therein.





                                      A-33

<PAGE>



         (b) SBB has furnished,  or has caused SBB&T to furnish, to Pacific with
true and  complete  copies of the Call  Reports of SBB&T for the  periods  ended
December  31,  1996,  December  31, 1997 and March 31,  1998.  Such Call Reports
fairly presents,  in all material respects,  the financial position of SBB&T and
the  results of its  operations  at the dates and for the periods  indicated  in
conformity  with  the  Instructions  for  the  Preparation  of Call  Reports  as
promulgated  by  applicable  regulatory  authorities.  The Call  Reports  do not
contain  any items of special  or  nonrecurring  income or any other  income not
earned in the ordinary course of business except as expressly specified therein.
SBB&T has  calculated  its allowance  for loan losses in  accordance  with GAAP,
which includes RAP where applicable,  as applied to banking  institutions and in
accordance with all applicable rules and  regulations.  To the best knowledge of
SBB, the allowance  for loan losses  account for SBB&T is, and as of the Closing
Date will be, adequate in all material  respects to provide for all losses,  net
of recoveries relating to loans previously charged off, on all outstanding loans
of SBB&T.

         SECTION 4.06  Undisclosed  Liabilities.  Neither SBB nor any of the SBB
Subsidiaries  has any  material  liability  or  obligation,  accrued,  absolute,
contingent  or otherwise  and whether due or to become due  (including,  without
limitation,  unfunded  obligations  under any service  recognition  or severance
agreement, whether written or oral, or SBB Employee Plans (as defined in Section
4.31  hereof) or  material  liabilities  for  federal,  state or local  taxes or
assessments or material  liabilities  under any agreement that are not reflected
in or disclosed in the SBB Financial  Statements,  except (i) those  liabilities
and expenses  incurred in the ordinary  course of business and  consistent  with
prudent  business  practices  since the date of the SBB Financial  Statements or
(ii) as disclosed on Schedule 4.06.

         SECTION 4.07  Litigation.  Except as set forth on Schedule 4.07,  there
are  no  actions,  claims,  suits,  investigations,   reviews  or  other  legal,
quasi-judicial or  administrative  proceedings of any kind or nature now pending
or, to the best  knowledge of SBB,  threatened  against or affecting SBB, any of
the SBB Subsidiaries or any of their  respective  current or former officers and
directors  (while acting in such capacity) at law or in equity,  or by or before
any federal,  state or municipal court or other  governmental or  administrative
department,  commission,  board, bureau, agency or instrumentality,  domestic or
foreign,  that in any manner involves SBB, the SBB  Subsidiaries or any of their
current or former  officers or directors  (while acting in such capacity) or any
of their  properties or capital stock that would  reasonably be  anticipated  to
result in a Material  Adverse  Change  with  respect to SBB, or  materially  and
adversely affect the transactions  contemplated by this Agreement,  and SBB does
not know or have any  reason to be aware of any  basis  for the  same.  No legal
action,   suit  or  proceeding  or  judicial,   administrative  or  governmental
investigation is pending or, to the knowledge of SBB,  threatened against SBB or
any of the SBB Subsidiaries that questions the validity of this Agreement or the
agreements  contemplated  hereby,  including,  but not  limited  to,  the Merger
Agreement, or any actions taken or to be taken by SBB pursuant hereto or thereto
or seeks to enjoin or otherwise restrain the transactions contemplated hereby or
thereby.

         SECTION 4.08  Consents and  Approvals.  SBB's Board of Directors  (at a
meeting called and duly held) has resolved,  subject to its fiduciary  duties to
the   shareholders  of  SBB,  to  recommend   approval  and  adoption  by  SBB's
shareholders of the Merger, this Agreement and the Merger Agreement.  Except for




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<PAGE>



shareholder  and regulatory  approvals and except as disclosed in Schedule 4.08,
no approval, consent, order or authorization of, or registration, declaration or
filing with, any governmental  authority or other third party is required on the
part of SBB in connection  with the  execution,  delivery or performance of this
Agreement or the agreements contemplated hereby,  including, but not limited to,
the  Merger   Agreement,   or  the  consummation  by  SBB  of  the  transactions
contemplated hereby or thereby.

         SECTION 4.09 Title to Assets.  SBB and each of the SBB Subsidiaries has
good and  indefeasible  title to all of its  assets  and  properties  including,
without limitation,  all personal and intangible properties reflected in the SBB
Financial  Statements  or  acquired  subsequent  thereto,  subject  to no liens,
mortgages,  security interests,  encumbrances or charges of any kind, except (i)
as described in Schedule  4.09,  (ii) as noted in the SBB Financial  Statements,
(iii) statutory liens not yet delinquent,  (iv) consensual  landlord liens,  (v)
minor  defects  and  irregularities  in  title  and  encumbrances  that  do  not
materially  impair the use thereof for the purpose for which they are held, (vi)
pledges of assets in the  ordinary  course of  business to secure  public  funds
deposits,  and (vii) those assets and  properties  disposed of for fair value in
the ordinary course of business since the dates of the SBB Financial Statements.
Schedule 4.09  includes a copy of the title policy of insurance  with respect to
each parcel of real property owned by SBB and the SBB Subsidiaries.

         SECTION 4.10 Absence of Certain Changes or Events.  Except as disclosed
on Schedule 4.10, since December 31, 1997, SBB,  including the SBB Subsidiaries,
has conducted its business only in the ordinary  course and has not,  other than
in the ordinary  course of business and consistent  with past practices and safe
and sound banking practices:

                 A. Incurred any  obligation or  liability,  absolute,  accrued,
         contingent  or  otherwise,   whether  due  or  to  become  due,   which
         individually or in the aggregate,  has had a material adverse effect on
         the business,  results of operations,  financial condition, or (insofar
         as  they  can  reasonably  be  foreseen)  prospects  of SBB and the SBB
         Subsidiaries  taken as a whole,  except for deposits  taken and federal
         funds   purchased  and  current   liabilities  for  trade  or  business
         obligations;

                 B.   Discharged or satisfied any lien, charge or encumbrance or
         paid any obligation or liability,  whether absolute or  contingent, due
         or to become due;

                 C.   Declared  or  made  any  payment  of  dividends  or  other
         distribution to its shareholders, or purchased, retired or redeemed, or
         obligated  itself to purchase,  retire or redeem,  any of its shares of
         capital stock or other securities;

                 D. Issued,  reserved for issuance,  granted, sold or authorized
         the issuance of any shares of its capital stock or other  securities or
         subscriptions,  options,  warrants, calls, rights or commitments of any
         kind relating to the issuance thereto;

                 E.  Acquired any capital  stock or other equity  securities  or
         acquired  any equity or  ownership  interest in any bank,  corporation,
         partnership  or  other  entity   (except  (i)  through   settlement  of
         indebtedness, foreclosure,  or the  exercise of  creditors' remedies or




                                      A-35

<PAGE>



         (ii) in a fiduciary capacity, the ownership of which does not expose it
         to any liability  from the business,  operations or liabilities of such
         person);

                 F. Mortgaged,  pledged or subjected to lien,  charge,  security
         interest or any other  encumbrance or restriction  any of its property,
         business or assets,  tangible or intangible  except (i) as described in
         Schedule  4.09,  (ii)  statutory   liens  not  yet  delinquent,   (iii)
         consensual  landlord liens,  (iv) minor defects and  irregularities  in
         title and  encumbrances  that do not materially  impair the use thereof
         for the  purpose  for which  they are held,  (v)  pledges  of assets to
         secure public funds deposits,  and (vi) for those assets and properties
         disposed  of for  fair  value  since  the  dates  of the SBB  Financial
         Statements.

                 G. Sold, transferred, leased to others or otherwise disposed of
         any of its  assets or canceled  or compromised any  debt  or claim,  or
         waived or released any right or claim of material value;

                 H. Terminated,  canceled or surrendered, or received any notice
         of or threat of termination or cancellation  of any contract,  lease or
         other agreement or suffered any damage, destruction or loss (whether or
         not  covered by  insurance),  which,  in any case or in the  aggregate,
         would  have a  material  adverse  effect on the  business,  results  of
         operations,  financial condition, or (insofar as they can reasonably be
         foreseen) prospects of SBB and the SBB Subsidiaries taken as a whole;

                 I. Disposed of, permitted to lapse,  transferred or granted any
         rights under,  or entered into any  settlement  regarding the breach or
         infringement   of,  any  United  States  or  foreign   license  or  SBB
         Proprietary  Right (as defined in Section  4.15 hereof) or modified any
         existing rights with respect thereto;

                 J.  Made any  change in the rate of  compensation,  commission,
         bonus or other  direct or  indirect  remuneration  payable,  or paid or
         agreed or orally  promised  to pay,  conditionally  or  otherwise,  any
         bonus, extra compensation,  pension or severance or vacation pay, to or
         for  the  benefit  of  any of its  shareholders,  directors,  officers,
         employees  or agents,  or entered  into any  employment  or  consulting
         contract or other  agreement with any director,  officer or employee or
         adopted,  amended in any material  respect or  terminated  any pension,
         employee  welfare,  retirement,  stock  purchase,  stock option,  stock
         appreciation rights, termination,  severance, income protection, golden
         parachute,  savings or profit-sharing  plan (including trust agreements
         and   insurance   contracts   embodying   such  plans),   any  deferred
         compensation,  or collective bargaining agreement,  any group insurance
         contract or any other  incentive,  welfare or employee  benefit plan or
         agreement maintained by it for the benefit of its directors,  employees
         or former employees,  except (i) compensation  adjustments contemplated
         within  SBB's 1998  budget and  approved  in advance by Pacific  (which
         approval  shall  not  be  unreasonably  withheld),  and  (ii)  periodic
         increases consistent with past practices;





                                      A-36

<PAGE>



                  K. Except for  improvements  or betterments  relating  to  SBB
         Properties (as defined  in Section 4.19(e)  hereof), made  any  capital
         expenditures or capital  additions  or  betterments  in  excess  of  an
         aggregate of $4,000,000;

                 L. Instituted,  had instituted against it, settled or agreed to
         settle  any  litigation,  action  or  proceeding  before  any  court or
         governmental body, other than routine collection suits instituted by it
         to collect  amounts owed or suits in which the amount in controversy is
         less than $200,000;

                 M. Permitted any change,  event or condition  that, in any case
         or in the  aggregate,  has caused or may  result in a Material  Adverse
         Change,  or any  Material  Adverse  Change  in  earnings  or  costs  or
         relations  with its  employees,  agents,  depositors,  loan  customers,
         correspondent banks or suppliers;

                 N. Except for the  transactions contemplated by  this Agreement
         or as otherwise  permitted hereunder, entered  into any transaction, or
         entered into, modified or amended any contract or commitment;

                 O. Entered into or given any promise, assurance or guarantee of
         the payment,  discharge or  fulfillment  of any  undertaking or promise
         made by any person,  firm or  corporation  other than letters of credit
         issued in the ordinary course of business;

                 P. Sold, or knowingly disposed of, or otherwise divested itself
         of the  ownership,  possession,  custody or control,  of any  corporate
         books or records of any nature that, in accordance  with sound business
         practice,  normally  are retained for a period of time after their use,
         creation or receipt, except at the end of the normal retention period;

                 Q. Made any, or  acquiesced with any,  change in any accounting
         methods, principles or  material practices, except  as required by GAAP
         or RAP;

                 R. Sold  (provided,  however,  that  payment at maturity is not
         deemed  a sale)  any  investment  securities  in a  single  transaction
         involving  a book  gain or loss of more than  $200,000  on such sale or
         purchased  any  investment  securities,  other than  purchases  of U.S.
         Treasury securities with a maturity of two years or less;

                 S. Made,  renewed,  extended the maturity of, or altered any of
         the material  terms of any criticized  loan to any single  borrower and
         his related interests without regard to whether such transaction was in
         the ordinary  course of business or whether it was consistent with past
         or safe and sound banking practices; or

                 T. Entered into any agreement or made any commitment whether in
         writing or otherwise  to take any  of the types  of action described in
         subsections A. through S. above.





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<PAGE>



         SECTION 4.11 Leases, Contracts and Agreements. Schedule 4.11 sets forth
a complete listing of all leases, subleases,  licenses, contracts and agreements
to which  SBB,  including  any of the SBB  Subsidiaries,  is a party  (the  "SBB
Contracts"), and which (i) relate to real property used by SBB in its operation,
(ii) involve payments to or by SBB in excess of $200,000 during the term of such
SBB  Contracts  (exclusive of unfunded  loan  commitments  and letters of credit
issued by SBB), or (iii) involve any unfunded  loan  commitments  and letters of
credit issued by SBB where the borrower's total direct and indirect indebtedness
to SBB is in  excess  of  $4,000,000.  True and  correct  copies of all such SBB
Contracts  (other than unfunded loan commitments and letters of credit issued by
SBB) are included with Schedule  4.11. For the purposes of this  Agreement,  the
SBB Contracts  shall be deemed not to include loans made by,  Federal funds sold
or  purchased  by,   repurchase   agreements  made  by,  spot  foreign  exchange
transactions of, bankers  acceptances of or deposits by SBB. Except as set forth
in Schedule 4.11, no participations or loans have been sold which have buy back,
recourse or guaranty provisions which create contingent or direct liabilities of
SBB. To the knowledge of SBB, all of the leases, subleases,  licenses, contracts
and  agreements to which SBB or any SBB  Subsidiary is a party are legal,  valid
and  binding  obligations  of the  parties  to  such  contracts  enforceable  in
accordance with their terms,  subject to the effects of bankruptcy,  insolvency,
reorganization,  moratorium or other similar laws relating to creditors'  rights
generally and to general equitable principles, and are in full force and effect.
Except as described in Schedule 4.11, all rent and other payments by SBB and any
SBB Subsidiary under such contracts are current,  there are no existing defaults
by SBB or any SBB Subsidiary under such contracts, and no termination, condition
or other event has occurred which (whether with or without notice, lapse of time
or the happening or  occurrence of any other event) would  constitute a default.
SBB and each SBB Subsidiary has a good and  indefeasible  leasehold  interest in
each  parcel of real  property  leased  by it free and  clear of all  mortgages,
pledges, liens, encumbrances and security interests.

         SECTION 4.12 Taxes.  SBB has duly and timely filed with the appropriate
Federal,  state and local  governmental  agencies  all tax  returns  and reports
required to be filed, including,  without limitation,  income, excise, property,
sales, use, franchise, value added, unemployment,  employees' income withholding
and  social  security  taxes,  imposed by the  United  States or by any  foreign
country or by any state,  municipality,  subdivision or  instrumentality  of the
United States or of any foreign country,  or by any other taxing authority,  and
has paid, or has established adequate reserves for the payment of, all taxes and
assessments  that are or are  claimed to be due,  payable or owed by SBB, or for
which SBB may have  liability,  whether as a result of its own  activities or by
virtue of its  affiliation  with other  entities and all interest and  penalties
thereon,  whether  disputed  or not.  All  such  tax  returns  and  reports  are
accurately  prepared  and all  deposits  required  by law to be made by SBB with
respect to employees'  withholding taxes have been duly made. SBB is not and has
not been delinquent in the payment of any foreign or domestic tax, assessment or
governmental  charge or deposit and has no tax deficiency or claim  outstanding,
proposed or assessed against it, and, to SBB's knowledge,  there is no basis for
any such deficiency or claim.  Except as set forth in Schedule 4.12,  within the
last six (6) years,  SBB's  Federal  income  tax return has not been  audited or
examined  and no such  audit  is  currently  pending  or,  to  SBB's  knowledge,
threatened.  SBB has not been granted any  extension of time with respect to the
date on which any tax  return not yet filed was or is due to be filed by or with
respect to SBB or any waiver or agreement  by SBB for the  extension of time for
the assessment or collection of  any tax.  Except as set forth in Schedule 4.12,




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<PAGE>



SBB (i) within the past six (6) years,  has not  committed  any violation of any
applicable  Federal,  state, local or foreign tax laws, and (ii) with respect to
all prior years,  has not  committed any  violation of any  applicable  Federal,
state,  local or foreign tax laws that is likely to result in a Material Adverse
Change with respect to SBB.

         The amounts set up as provisions  for current or deferred  taxes on the
SBB Financial Statements are sufficient in all material respects for the payment
of all unpaid Federal,  state, county,  local, foreign or other taxes (including
any  interest or  penalties)  of or on behalf of SBB  applicable  to the periods
covered  by the SBB  Financial  Statements,  and all  years  and  periods  prior
thereto.  True and complete  copies of the Federal  income tax returns of SBB as
filed with the IRS for the years ended December 31, 1995,  1996, and 1997,  have
been delivered to Pacific.

         SECTION 4.13 Insurance. Schedule 4.13 contains an accurate and complete
list and brief description of all policies of insurance,  including fidelity and
bond insurance,  of SBB,  including the SBB Subsidiaries.  All such policies (a)
are valid,  outstanding and enforceable  except as enforceability may be limited
by  bankruptcy,   conservatorship,   insolvency,   moratorium,   reorganization,
receivership,  or similar laws and judicial  decisions  affecting  the rights of
creditors  generally and by general  principles of equity (whether  applied in a
proceeding  at law or  equity),  (b)  will  not in any  significant  respect  be
affected  by, and will not  terminate  or lapse by reason  of, the  transactions
contemplated by this Agreement,  and (c) are presently in full force and effect,
no notice has been  received  of the  cancellation,  or  threatened  or proposed
cancellation,  of any such policy and there are no unpaid  premiums due thereon.
SBB,  including  the SBB  Subsidiaries,  is not in default  with  respect to the
provisions  of any such  policy and has not failed to give any notice or present
any  claim  thereunder  in a due and  timely  fashion.  Except  as set  forth on
Schedule 4.13, neither SBB nor any SBB Subsidiary has been refused any insurance
with respect to its assets or operations,  nor has its insurance been limited by
any insurance  carrier to which SBB and the SBB Subsidiaries has applied for any
such insurance  within the last two (2) years.  Each property of SBB,  including
the SBB  Subsidiaries,  is insured  for the  benefit  of SBB in  amounts  deemed
adequate by SBB's management  against risks customarily  insured against.  There
have  been  no  claims  under  any  fidelity  bonds  of SBB  or  any of the  SBB
Subsidiaries  within the last three (3) years, and SBB is not aware of any facts
that would form the basis of a claim under such bonds.

         SECTION 4.14 No Adverse Change. Except as disclosed in the Schedules to
this Agreement or in the representations and warranties made in this Article IV,
there has not been any Material  Adverse Change since December 31, 1997, nor has
any event or  condition  occurred  that has  resulted  in,  or has a  reasonable
possibility  of  resulting  in the  future,  in a Material  Adverse  Change with
respect to SBB.

         SECTION 4.15 Patents, Trademarks and Copyrights. Except as disclosed in
Schedule 4.15, SBB and the SBB Subsidiaries do not own or require the use of any
patent, patent application, patent right, invention, process, trademark (whether
registered or unregistered), trademark application, trademark right, trade name,
service  name,  service  mark,  copyright or any trade secret ("SBB  Proprietary
Rights") for their  respective  businesses  or  operations,  except for licensed
computer software. To  the knowledge of  SBB, neither SBB  nor any  of  the  SBB




                                      A-39

<PAGE>



Subsidiaries  are  infringing  upon or  otherwise  acting  adversely  to any SBB
Proprietary  Right owned by any other  person or  persons.  There is no claim or
action by any such person pending, or, to the knowledge of SBB, threatened, with
respect thereto.

         SECTION 4.16 Transactions with Certain Persons and Entities.  Except as
disclosed in Schedule 4.16,  neither SBB nor any of the SBB Subsidiaries owe any
amount to (excluding deposit liabilities),  or have any loan (excluding loans to
participants from the Santa Barbara Bank & Trust 401(k) Plan), contract,  lease,
commitment or other obligation from or to any of the present or former directors
or executive  officers (other than compensation for current services not yet due
and payable and  reimbursement  of expenses  arising in the  ordinary  course of
business)  of SBB and the SBB  Subsidiaries,  and none of such  persons owes any
amount to SBB or the SBB  Subsidiaries.  Except as set forth in  Schedule  4.16,
there are no understandings,  agreements (whether written or oral), instruments,
commitments,  perquisites,  extensions  of credit,  tax  sharing  or  allocation
agreements or other contractual  agreements of any kind between or among SBB and
the SBB Subsidiaries, whether on its own behalf or in its capacity as trustee or
custodian  for the funds of any employee  benefit plan (as defined in ERISA) and
any present or former officers or directors of SBB or the SBB Subsidiaries. True
and correct copies of any such written understandings,  agreements, instruments,
etc., are included with Schedule 4.16.

         SECTION 4.17 Evidences of  Indebtedness.  All evidences of indebtedness
and leases that are reflected as assets of SBB and the SBB Subsidiaries  are, to
SBB's best  knowledge,  legal,  valid and binding  obligations of the respective
obligors thereof,  enforceable in accordance with their respective terms (except
as limited by applicable bankruptcy, insolvency, reorganization,  moratorium and
similar laws affecting  creditors  generally and the  availability of injunctive
relief,  specific  performance and other equitable remedies) and are not subject
to any  known or  threatened  defenses,  offsets  or  counterclaims  that may be
asserted against SBB, the SBB Subsidiaries or the present holder thereof, except
as  disclosed  in Schedule  4.17.  The credit  files of SBB,  including  the SBB
Subsidiaries,  contain all material  information  (excluding  general,  local or
national  industry,  economic  or  similar  conditions)  known  to SBB  that  is
reasonably  required  to  evaluate  in  accordance  with  generally   prevailing
practices in the banking  industry the  collectibility  of the loan portfolio of
SBB (including loans that will be outstanding if any of them advances funds they
are obligated to advance).  SBB has disclosed all of the substandard,  doubtful,
loss,  nonperforming  or loans identified as problem loans on the internal watch
list of SBB&T, a copy of which as of May 31, 1998, has been provided to Pacific.
Except as disclosed in Schedule  4.17, SBB is not aware of, nor has SBB received
notice of, any past or present  conditions,  events,  activities,  practices  or
incidents that may result in a violation of any Environmental Law (as defined in
Section  12.08(D)  hereof)  with  respect  to any  real  property  securing  any
indebtedness reflected as an asset of SBB or any SBB Subsidiary.

         SECTION  4.18  Condition of Assets.  All  tangible  assets used by SBB,
including the SBB Subsidiaries,  are in good operating condition,  ordinary wear
and tear  excepted,  and conform with all  applicable  ordinances,  regulations,
zoning and other laws, whether Federal,  state or local.  Except as set forth on
Schedule 4.18, none of SBB's or the SBB Subsidiaries'  premises or equipment are
in need of maintenance or repairs other than ordinary  routine  maintenance  and
repairs that are not material in nature or cost.




                                      A-40

<PAGE>



         SECTION 4.19 Environmental Compliance.

         (a) Except as set forth on Schedule  4.19(a),  SBB is not aware of, nor
has SBB received notice of, any past or present conditions,  events, activities,
practices or incidents that are in violation of  Environmental  Laws (as defined
in  Section  12.08(D)  or that may  interfere  with or prevent  SBB's  continued
compliance in all respects with all Environmental Laws.

         (b) SBB and the SBB  Subsidiaries  have obtained all permits,  licenses
and authorizations that are required under any Environmental Laws.

         (c) Except as set forth on Schedule  4.19(c),  to SBB's  knowledge,  no
Hazardous  Materials (as defined in Section 12.08(E) hereof) exist on, about, or
within any of the SBB  Properties  (as defined in this  Section  4.19),  nor, to
SBB's knowledge,  have any Hazardous  Materials  previously existed on, about or
within or been used, generated, stored, transported, disposed of, on or released
from any of the SBB  Properties in violation of any  Environmental  Law. The use
that SBB,  including the SBB Subsidiaries,  makes and intends to make of the SBB
Properties  will not  result in the use,  generation,  storage,  transportation,
accumulation,  disposal or release of any Hazardous  Material on, in or from any
of the SBB Properties in violation of any Environmental Law.

         (d) There is no  action,  suit,  proceeding,  investigation  or inquiry
before any court,  administrative agency or other governmental authority pending
or, to SBB's knowledge, threatened against SBB or any SBB Subsidiary relating in
any way to any  Environmental  Law. To the best of SBB's knowledge,  neither SBB
nor  any  SBB  Subsidiary  has any  liability  for  remedial  action  under  any
Environmental  Law.  SBB has not  received  any request for  information  by any
governmental authority with respect to the condition, use or operation of any of
the SBB  Properties  nor has SBB  received  any  notice  of any  kind  from  any
governmental  authority  or other  person with  respect to any  violation  of or
claimed  or  potential  liability  of  any  kind  under  any  Environmental  Law
(including, without limitation, any letter, notice or inquiry from any person or
governmental  entity  informing SBB that it is or may be liable in any way under
any Environmental Law, or requesting  information to enable such a determination
to be made).

         (e) As used in this  Section  4.19,  the term  "SBB  Property"  or "SBB
Properties" shall include all real property  currently owned or leased by SBB or
any of the SBB Subsidiaries,  including, but not limited to, properties that SBB
or any SBB Subsidiary has  foreclosed on as well as SBB&T's  respective  banking
premises  and all  improvements  and  fixtures  thereon.  The  phrase  "to SBB's
knowledge"  or  similar  phrases  as used in this  Section  4.19  shall mean the
current actual knowledge of executive management of SBB.

         SECTION   4.20   Regulatory   Compliance.    All   reports,    records,
registrations,  statements,  notices and other documents or information required
to be filed by SBB and the SBB  Subsidiaries  during the last two (2) years with
any federal or state regulatory  authority  including,  without limitation,  the
Federal  Reserve,  the FDIC, the California  Commissioner  and the IRS have been
duly and timely filed and all  information  and data  contained in such reports,
records or other documents are true, accurate,  correct and complete.  Except as
disclosed on Schedule  4.20, SBB and  the SBB Subsidiaries  are not now nor have




                                      A-41

<PAGE>



been,  within the past six (6) years subject to any memorandum of understanding,
cease and desist order, written agreement or other formal  administrative action
with any such regulatory bodies. SBB does not believe any such regulatory bodies
have any  present  intent  to place  SBB or the SBB  Subsidiaries  under any new
administrative  action.  Except  as set  forth on  Schedule  4.20,  there are no
actions or proceedings  pending or threatened  against SBB or any SBB Subsidiary
by or  before  any  such  regulatory  bodies  or  any  other  nation,  state  or
subdivision  thereof,  or any other entity  exercising  executive,  legislative,
judicial, regulatory or administrative functions of or pertaining to government.

         SECTION  4.21  Securities  and  Exchange  Commission  Reports.  SBB has
previously  made  available to Pacific an accurate and complete copy of each (a)
final registration statement,  prospectus, report, schedule and definitive proxy
statement  filed  since  January 1, 1995 by SBB with the S.E.C.  pursuant to the
Securities  Act or the  Exchange  Act,  and prior to the date  hereof  (the "SBB
Reports"), and (b) communication mailed by SBB to its shareholders since January
1,  1995 and  prior  to the date  hereof,  and no such  registration  statement,
prospectus,  report,  schedule,  proxy statement or communication  contained any
untrue  statement  of a  material  fact or omitted  to state any  material  fact
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in light of the circumstances in which they were made, not misleading,
except that information as of a later date shall be deemed to modify information
as of an earlier  date.  Since  January 1,  1995,  SBB has timely  filed all SBB
Reports and other documents  required to be filed by it under the Securities Act
and the  Exchange  Act,  and,  as of their  respective  dates,  all SBB  Reports
complied in all material  respects with the published  rules and  regulations of
the S.E.C. with respect thereto.

         SECTION 4.22 Absence of Certain Business Practices. Except as set forth
on Schedule 4.22, neither SBB, the SBB Subsidiaries nor any officer, employee or
agent of SBB or the SBB  Subsidiaries,  nor any  other  person  acting  on their
behalf,  has, directly or indirectly,  within the past ten (10) years,  given or
agreed  to  give  any  gift  or  similar  benefit  to  any  customer,  supplier,
governmental  employee or other person who is or may be in a position to help or
hinder the  business  of SBB as a whole (or assist  SBB in  connection  with any
actual or  proposed  transaction)  that (i) would  subject SBB or any of the SBB
Subsidiaries  to any damage or penalty in any civil,  criminal  or  governmental
litigation or proceeding,  (ii) if not given in the past, would have resulted in
a Material  Adverse Change with respect to SBB, or (iii) if not continued in the
future,  would result in a Material  Adverse Change with respect to SBB or would
subject  SBB to suit or penalty in any  private or  governmental  litigation  or
proceeding.

         SECTION 4.23 Registration Statement; Joint Proxy  Statement/Prospectus.
None  of  the  information  supplied  or to be  supplied  by  SBB  or any of its
directors,  officers,  employees  or agents for  inclusion  in the  Registration
Statement    (as   defined   in   Section    5.03(c))   or   the   Joint   Proxy
Statement/Prospectus  (as defined in Section 5.03(c)),  or any amendment thereof
or supplement thereto,  will be false or misleading with respect to any material
fact,  or omit to  state  any  material  fact  necessary  in  order  to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading,  or at the time of the Pacific Shareholders' Meeting and the SBB
Shareholders' Meeting, be false or misleading with respect to any material fact,
or omit to state any material  fact  necessary  to correct any  statement in any
earlier communication with  respect to the  solicitation of any  proxy  for  the




                                      A-42

<PAGE>



Pacific Shareholders'  Meeting and the SBB Shareholders'  Meeting. All documents
that SBB is responsible for filing with any regulatory or governmental agency in
connection  with the  Merger  will  comply  in all  material  respects  with the
provisions of applicable law.

         SECTION 4.24 Pooling of  Interests.  As of the date of this  Agreement,
SBB has no reason to believe  that the Merger  will not qualify as a "pooling of
interests" for accounting purposes.

         SECTION 4.25 Books and Records.  The minute  books,  stock  certificate
books and stock transfer  ledgers of SBB and the SBB  Subsidiaries (i) have been
kept  accurately  in the  ordinary  course of  business,  (ii) are  complete and
correct in all material respects,  (iii) reflect transactions  representing bona
fide transactions,  and (iv) do not fail to reflect  transactions  involving the
business  of SBB or the SBB  Subsidiaries  that were  required  to have been set
forth therein and that have not been accurately so set forth.

         SECTION  4.26 Forms of  Instruments,  Etc.  SBB will make  available to
Pacific upon written  request copies of all standard forms of notes,  mortgages,
deeds of trust and other  routine  documents  of a like nature used on a regular
and recurring  basis by SBB and the SBB  Subsidiaries  in the ordinary course of
their businesses.

         SECTION  4.27  Fiduciary  Responsibilities.   Except  as  disclosed  in
Schedule  4.27,  SBB and the SBB  Subsidiaries  have  performed  in all material
respects all of their duties as a trustee,  custodian,  guardian or as an escrow
agent in a manner that  complies in all material  respects  with all  applicable
laws, regulations, orders, agreements, instruments and common law standards.

         SECTION 4.28 Guaranties.  None of the obligations or liabilities of SBB
or the SBB Subsidiaries are guaranteed by any other person, firm or corporation,
nor is any  outstanding  obligation  or liability of any other  person,  firm or
corporation  guaranteed by SBB or the SBB  Subsidiaries,  except in the ordinary
course of business,  according to prudent  business  practices and in compliance
with applicable law.

         SECTION 4.29 Voting Trust or Buy-Sell  Agreements.  SBB is not aware of
any agreement  between or among any of its  shareholders  relating to a right of
first  refusal with respect to the purchase or sale by any such  shareholder  of
capital  stock of SBB or any voting  agreement  or voting  trust with respect to
shares of capital stock of SBB.

         SECTION  4.30  Employee  Relationships.  SBB and  the SBB  Subsidiaries
(including  their  respective  officers  and  directors  while  acting  in  such
capacities)  has  complied in all material  respects  with all  applicable  laws
relating to its  relationships  with its  employees,  and SBB believes  that the
relationships  between SBB,  including  the SBB  Subsidiaries  (including  their
respective  officers  and  directors  while acting in such  capacities)  and its
employees are good. To the knowledge of SBB, no key executive officer or manager
of any of the operations  operated by SBB and the SBB  Subsidiaries or any group
of employees of SBB and the SBB Subsidiaries have any present plans to terminate
their employment with SBB or any SBB  Subsidiary. Neither SBB nor any of the SBB




                                      A-43

<PAGE>



Subsidiaries is a party to any oral or written contracts or agreements  granting
benefits or rights to employees or any collective bargaining agreement or to any
conciliation  agreement  with the  Department  of Labor,  the  Equal  Employment
Opportunity Commission or any federal, state or local agency that requires equal
employment  opportunities  or  affirmative  action in  employment.  There are no
unfair labor practice  complaints  pending against SBB, including any of the SBB
Subsidiaries,  before the National Labor  Relations  Board and no similar claims
pending before any similar state, local or foreign agency.  There is no activity
or proceeding of any labor organization (or representative  thereof) or employee
group to organize any employees of SBB, including any SBB Subsidiary, nor of any
strikes,  slowdowns,  work stoppages,  lockouts or threats  thereof,  by or with
respect to any such employees. SBB and the SBB Subsidiaries are in compliance in
all  material  respects  with all  applicable  laws  respecting  employment  and
employment  practices,  terms and  conditions of employment and wages and hours,
and neither SBB nor any of the SBB  Subsidiaries are engaged in any unfair labor
practice.

         SECTION 4.31  Employee Benefit Plans.

         (a) Set forth on Schedule  4.31 is a complete  and correct  list of all
"employee  benefit  plans" (as defined in ERISA),  all specified  fringe benefit
plans as defined in Section 6039D of the Code,  and all other bonus,  incentive,
compensation,   deferred  compensation,  profit  sharing,  stock  option,  stock
appreciation  right,  stock bonus,  stock  purchase,  employee stock  ownership,
savings,  severance,  supplemental  unemployment,  layoff,  salary continuation,
retirement,  pension,  health,  life  insurance,  disability,  group  insurance,
vacation,  holiday,  sick  leave,  fringe  benefit or welfare  plan or any other
similar  plan,  agreement,  policy or  understanding  (whether  written or oral,
qualified or nonqualified,  currently  effective or terminated),  and any trust,
escrow  or  other  agreement  related  thereto,   which  (a)  is  maintained  or
contributed  to by SBB or any SBB  Subsidiary,  or with respect to which SBB and
the SBB Subsidiaries has any liability,  and (b) provides benefits, or describes
policies or procedures  applicable to any officer,  employee,  service provider,
former  officer  or  former  employee  of  SBB  or any  SBB  Subsidiary,  or the
dependents of any such person,  regardless of whether  funded (the "SBB Employee
Plans").

         (b) No SBB Employee  Plan is a defined  benefit plan within the meaning
of section 3(35) of ERISA.  SBB has delivered or made available to Pacific true,
accurate and complete copies of the documents comprising each SBB Employee Plan,
and such other documents,  records or other materials related thereto reasonably
requested  by  Pacific.  To the  best  knowledge  of  SBB,  there  have  been no
prohibited  transactions,  breaches of fiduciary  duty or any other  breaches or
violations of any law  applicable  to the SBB Employee  Plans that would subject
SBB to any  liabilities.  Each SBB Employee Plan intended to be qualified  under
section 401(a) of the Code has a current favorable  determination letter and, to
the best knowledge of SBB, has been operated in compliance  with  applicable law
and in  accordance  with its terms.  There are no pending  claims,  lawsuits  or
actions relating to any SBB Employee Plan (other than ordinary course claims for
benefits) and, to the best knowledge of SBB, none are threatened.  No written or
oral representations have been made to any employee or former employee of SBB or
the SBB  Subsidiaries  promising or guaranteeing any employer payment or funding
for the  continuation of medical,  dental,  life or disability  coverage for any
period of time beyond the end of the current  plan year (except to the extent of
coverage required under  section 4980B of  the Code). SBB  is in compliance with


                                      A-44

<PAGE>



FAS 106.  Except as  required  in  connection  with  qualified  plan  amendments
required by tax law changes,  the consummation of the transactions  contemplated
by this  Agreement  will not  accelerate  the time of  payment  or  vesting,  or
increase  the amount,  of  compensation  due to any  employee,  officer,  former
employee or former officer of SBB or any SBB Subsidiary.

         (c) With respect to each "employee  benefit plan" (as defined in ERISA)
maintained or contributed to or required to be contributed  to,  currently or in
the past,  by any trade or  business  with which SBB is  required  by any of the
rules  contained  in the Code or ERISA to be treated as a single  employer  (the
"Controlled Group Plans"):

         (i)      To the knowledge of SBB, all  Controlled  Group Plans that are
                  "group  health  plans" (as defined in the Code and ERISA) have
                  been  operated to the Closing in a manner so as to not subject
                  SBB to any material liability under Section 4980B of the Code;
                  and

         (ii)     There is no  Controlled  Group Plan that is a defined  benefit
                  plan (as  defined  in Section  3(35) of ERISA),  nor has there
                  been in the last five (5) calendar years.

         (iii)    There is no Controlled Group Plan that is a "multiple employer
                  plan" or "multiemployer  plan" (as either such term is defined
                  in ERISA),  nor has there  been in the last five (5)  calendar
                  years.

         SECTION 4.32 Interest Rate Risk  Management  Instruments.  All interest
rate swaps,  caps,  floors and option  agreements  and other  interest rate risk
management arrangements,  whether entered into for the account of SBB or any SBB
Subsidiary or for the account of a customer of SBB or any SBB  Subsidiary,  were
entered  into in the ordinary  course of business  and, to SBB's  knowledge,  in
accordance with prudent banking practice and applicable  rules,  regulations and
policies of any  regulatory  authority  and with  counterparties  believed to be
financially responsible at the time and are legal, valid and binding obligations
of SBB or an SBB Subsidiary  enforceable in accordance  with their terms (except
as may be limited  by  bankruptcy,  insolvency,  moratorium,  reorganization  or
similar laws affecting the rights of creditors generally and the availability of
equitable  remedies),  and are in full  force  and  effect.  SBB  and  each  SBB
Subsidiary  have duly  performed in all material  respects all of their material
obligations  thereunder  to the extent  that such  obligations  to perform  have
accrued; and, to SBB's knowledge, there are no material breaches,  violations or
defaults or allegations or assertions of such by any party thereunder.

         SECTION 4.33 Year 2000.

         (a) To the best of SBB's  knowledge,  SBB and SBB&T  are in  compliance
with those certain  guidances and  statements  issued by the FFIEC in connection
with the  century  date  change  that will take place on January 1, 2000,  which
guidances are dated as of June 1996, May 5, 1997,  December 17, 1997,  March 17,
1998,  April 10, 1998,  and May 13, 1998  (together  with any  subsequent  FFIEC
issuances on the Year 2000, the "Interagency Statements"). SBB and SBB&T have:




                                      A-45

<PAGE>



                  (i)  Inventoried  and  assessed  the   technologies  it  uses,
         particularly its computer hardware and software,  to identify potential
         problems areas related to the Year 2000;

                  (ii)  Developed and  implemented  a Year 2000 Plan,  including
         comprehensive   testing  plans,  to  prepare  its  "mission   critical"
         information  technology to: (a) process  date/time data  accurately and
         without  interruption  (including,  but not  limited  to,  calculating,
         comparing,  and sequencing)  from, into, and between the years 1999 and
         2000, and leap year  calculations;  (b) respond to two-digit  year-date
         input  in a  way  that  resolves  the  ambiguity  as  to  century  in a
         disclosed, defined, and predetermined manner; and (c) store and provide
         output of date  information in ways that are unambiguous as to century;
         and

                  (iii)  Commenced the development of, and by September 30, 1998
         will have completed the  development  of,  contingency  plans to ensure
         continuity  of business  in the event of: (a)  failure to complete  any
         tasks  required  by  the  Year  2000  Plan,   such  as  remediation  or
         validation;  or (b) any externally caused business interruption related
         to the century date change.

                  (iv) Taken  commercially  reasonable  steps to investigate and
         test the ability of its "mission  critical"  information  technology to
         share and exchange  date/time data accurately and without  interruption
         or material delay with its key vendors and suppliers.

         (b) If SBB and SBB&T have been examined by federal or state  regulators
for Year 2000 readiness, neither has received a rating that would cause delay or
denial  of any  regulatory  approval  of this  Agreement  and  the  transactions
contemplated hereby.

         (c) SBB's  estimate  of the out-of  -pocket  expenses  payable to third
parties to complete  its  consolidated  Year 2000  Compliance  efforts is not in
excess of $1,300,000.

         SECTION 4.34  Representations Not Misleading.  To SBB's knowledge,  all
material  facts  relating  to  the  business  operations,   properties,  assets,
liabilities (contingent or otherwise) and financial condition of SBB and the SBB
Subsidiaries  have been  disclosed  to  Pacific  in or in  connection  with this
Agreement. No representation or warranty by SBB contained in this Agreement, nor
any  statement,  exhibit  or  schedule  furnished  to  Pacific  by SBB under and
pursuant  to, or in  anticipation  of or in  connection  with,  this  Agreement,
contains or will contain on the Closing Date any untrue  statement of a material
fact or  omits or will  omit to  state a  material  fact  necessary  to make the
statements  contained  herein or therein,  in light of the  circumstances  under
which it was or will be  made,  not  misleading  and  such  representations  and
warranties  would  continue to be true and correct  following  disclosure to any
governmental  authority  having  jurisdiction  over SBB or its properties of the
facts and circumstances upon which they were based.  Except as disclosed herein,
there is no matter that  materially  adversely  affects SBB or SBB's  ability to
perform the transactions  contemplated by this Agreement or the other agreements
contemplated  hereby, or to the knowledge of SBB, will in the future result in a
Material  Adverse  Change  with  respect  to SBB,  other than  general  economic
conditions. No information material to  the Merger and that is necessary to make




                                      A-46

<PAGE>



the  representations  and warranties  herein contained not misleading,  has been
withheld by SBB.


                                   ARTICLE V.
                              COVENANTS OF PACIFIC

         Pacific hereby makes the covenants set forth in this Article V to SBB.

         SECTION 5.01 Best Efforts. Pacific will use its best efforts to perform
and  fulfill all  conditions  and  obligations  on its part to be  performed  or
fulfilled under this Agreement and to cause the consummation of the transactions
contemplated  hereby  in  accordance  with  the  terms  and  conditions  of this
Agreement.

         SECTION 5.02 Merger  Agreement.  Pacific will,  as soon as  practicable
after the execution of this Agreement,  duly authorize and enter into the Merger
Agreement,  the form of which is attached hereto as Exhibit "A", and perform all
of its obligations thereunder.

         SECTION 5.03   Submission of Merger to Shareholders.  Pacific shall:

                  (a) Duly call,  give notice of,  convene  and hold,  on a date
         mutually  selected  by Pacific  and SBB, a meeting of its  shareholders
         (the "Pacific  Shareholders'  Meeting") as soon as practicable  for the
         purpose of approving  and adopting the Merger and the Merger  Agreement
         and the transactions contemplated hereby and thereby as required by the
         GCL;

                  (b) Not impose a requirement that the holders of more than the
         minimum required percentage (as set forth in Pacific's current Articles
         of  Incorporation,  current Bylaws or pursuant to provisions of the GCL
         requiring  the lowest  percentage  vote) of the  Pacific  Common  Stock
         entitled  to vote on the Merger and the Merger  Agreement  approve  the
         Merger and the Merger Agreement;

                  (c) Cooperate  and assist SBB in (i) preparing a  Registration
         Statement  on Form S-4 relating to the shares of SBB Common Stock to be
         issued to the Shareholders of Pacific as the Merger  Consideration (the
         "Registration  Statement")  and  a  Joint  Proxy  Statement/Prospectus,
         including  letter to  shareholders,  notice of special  meeting,  proxy
         statement   and  form  of  proxy   (collectively,   the  "Joint   Proxy
         Statement/Prospectus")  and (ii) filing the Registration  Statement and
         the  Joint   Proxy   Statement/Prospectus   (forming   a  part  of  the
         Registration  Statement) with the S.E.C.,  including  furnishing to SBB
         all information  concerning  Pacific that SBB may reasonably request in
         connection with  preparation of such  Registration  Statement and Joint
         Proxy Statement/Prospectus;

                  (d) Subject to the  fiduciary  duties of the Pacific  Board of
         Directors  to the  shareholders  of  Pacific,  (i) include in the Joint
         Proxy  Statement/Prospectus  the recommendation of the Pacific Board of
         Directors  that  the  shareholders  of  Pacific  vote in  favor  of the
         approval and adoption  of the Merger  and the Merger  Agreement and the




                                      A-47

<PAGE>



         transactions contemplated hereby and thereby, (ii) use its best efforts
         to obtain  such  shareholder  approval  of the  Merger  and the  Merger
         Agreement,  and (iii)  perform  such  other acts as may  reasonably  be
         requested by SBB to ensure that such shareholder approval of the Merger
         and the Merger Agreement is obtained; and

                  (e) Cause the Joint Proxy Statement/Prospectus to be mailed to
         the shareholders of Pacific as soon as practicable.

         SECTION 5.04 Information for Applications and Statements.  Pacific will
promptly,  but in no event later than ten (10)  business days after receipt of a
request by SBB,  furnish to SBB all information,  data and documents  concerning
Pacific,  including,  but not limited to,  financial  statements,  required  for
inclusion in any  application or statement to be made by SBB to, or filed by SBB
with, any governmental body in connection with the transactions  contemplated by
this  Agreement  (including  the  Registration  Statement  and the  Joint  Proxy
Statement/Prospectus),  or in connection with any other transactions  during the
pendency  of this  Agreement,  and  Pacific  represents  and  warrants  that all
information so furnished for such statements and applications  shall be true and
correct in all material  respects and shall not omit any material  fact required
to be stated therein or necessary to make the  statements  made, in light of the
circumstances  under  which  they  were  made,  not  misleading.  Pacific  shall
otherwise  fully  cooperate with SBB in the filing of any  applications or other
documents  necessary  to  consummate  the  transactions   contemplated  by  this
Agreement.

         SECTION 5.05  Required Acts of Pacific.  Prior to the Closing,  Pacific
shall,  and, as  applicable,  shall cause the Pacific  Subsidiaries  to,  unless
otherwise permitted in writing by SBB:

                  (a) Operate  only  in  the  ordinary  course  of  business and
         consistent with prudent banking practices;

                  (b) Except as required by prudent business practices,  use all
         reasonable efforts to preserve its business  organization intact and to
         retain its present customers, depositors and employees, and to maintain
         all offices, machinery,  equipment,  materials, supplies,  inventories,
         vehicles  and other  properties  owned,  leased or used by it  (whether
         under  its  control  or the  control  of  others),  in  good  operating
         condition and repair, ordinary wear and tear excepted;

                  (c) Perform all of its obligations under contracts, leases and
         documents relating to or affecting its assets, properties and business,
         except  such  obligations  as  Pacific  may in  good  faith  reasonably
         dispute;

                  (d) Maintain in full force and effect all  insurance  policies
         now in effect or renewals  thereof  and,  except as required by prudent
         business practices that do not jeopardize insurance coverage,  give all
         notices and present all claims under all insurance  policies in due and
         timely fashion, and Pacific and the Pacific Subsidiaries shall have the
         authority  to  purchase  a  rider  to  Pacific's   existing  policy  of
         directors'  and  officers'   liability   insurance  providing  for  the
         continuation of coverage  provided by such  policy for a  period  of 36




                                      A-48

<PAGE>



         months following the  Effective Date with  respect to actions occurring
         prior to the Effective Date to the extent that such coverage is obtain-
         able for an aggregate premium not to exceed $125,000;

                  (e) File all reports  required  to be filed with  governmental
         authorities and observe and conform,  in all material respects,  to all
         applicable  laws,  rules,  regulations,   ordinances,   codes,  orders,
         licenses  and permits,  except  those being  contested in good faith by
         appropriate proceedings;

                  (f) Timely file all tax returns required to be filed by it and
         promptly  pay all taxes,  assessments,  governmental  charges,  duties,
         penalties, interest and fines that become due and payable, except those
         being contested in good faith by appropriate proceedings;

                  (g) Withhold  from each payment made to each of its  employees
         the amount of all taxes (including,  but not limited to, federal income
         taxes,  FICA taxes and state and local income and wage taxes)  required
         to be withheld  therefrom  and pay the same to the proper tax receiving
         officers; and

                  (h) Account  for all  transactions  and prepare all  financial
         statements  of  Pacific  in  accordance  with  GAAP  (unless  otherwise
         instructed by RAP in which  instance  account for such  transaction  in
         accordance with RAP).

         SECTION 5.06 Prohibited Acts of Pacific. Prior to the Closing,  Pacific
and,  as  applicable,  the  Pacific  Subsidiaries  shall not,  without the prior
written consent of SBB:

                  (a) Take any action that would  reasonably be  anticipated  to
         result in a Material Adverse Change with respect to Pacific;

                  (b) Take or fail to take any action that would cause or permit
         the  representations  and  warranties  made in Article III hereof to be
         inaccurate  at the time of the Closing or preclude  Pacific from making
         such representations and warranties at the time of the Closing;

                  (c)  Change its  Articles  of  Incorporation  or Bylaws or its
         authorized capital stock, or change the Articles of Association, Bylaws
         or authorized capital stock of any Pacific Subsidiary;

                  (d) Except as explicitly  permitted hereunder or in accordance
         with  applicable  law,  engage in any  transaction  with any affiliated
         person or allow such  persons to acquire any assets from Pacific or any
         Pacific  Subsidiary  except  in the form of wages,  salaries,  fees for
         legal  services and  reimbursement  of expenses and by loans secured by
         liquid  collateral  having a fair  market  value at least  equal to the
         principal  balance  due on such  loan to its  officers,  directors  and
         employees in the ordinary course of business;





                                      A-49

<PAGE>



                  (e) Discharge or satisfy any lien,  charge or  encumbrance  or
         pay any obligation or liability, whether absolute or contingent, due or
         to become due,  except in the  ordinary  course of business  consistent
         with prudent banking  practices and except for liabilities  incurred in
         connection with the transactions contemplated hereby;

                  (f) Except as  provided in Section  5.21,  declare or make any
         payment of  dividends or other  distributions  to its  shareholder,  or
         purchase,  retire or redeem, or obligate itself to purchase,  retire or
         redeem, any of its shares of capital stock or other securities;

                  (g) Issue, reserve for issuance,  grant, sell or authorize the
         issuance  of any shares of its  capital  stock or other  securities  or
         subscriptions,  options,  warrants, calls, rights or commitments of any
         kind  relating to the  issuance  thereto  (except  for the  issuance of
         Pacific  Common Stock  pursuant to the valid  exercise of Pacific Stock
         Options,  as defined in Section 6.17 hereof,  which are  outstanding on
         the date of this Agreement);

                  (h) Grant any new  stock options or  accelerate the vesting of
         any existing stock options, except as provided in this Agreement;

                  (i) Accelerate the vesting  of  pension or  other  benefits in
         favor of employees of Pacific or any Pacific Subsidiary;

                  (j) Acquire any capital  stock or other equity  securities  or
         acquire  any equity or  ownership  interest  in any bank,  corporation,
         partnership  or  other  entity   (except  (i)  through   settlement  of
         indebtedness,  foreclosure,  or the exercise of creditors'  remedies or
         (ii) in a fiduciary capacity, the ownership of which does not expose it
         to any liability  from the business,  operations or liabilities of such
         person);

                  (k)  Mortgage,  pledge or subject to lien or charge,  or grant
         any security  interest or any other  encumbrance or restriction  any of
         its property,  business or assets, tangible or intangible except in the
         ordinary  course  of  business  and  consistent  with  prudent  banking
         practices;

                  (l) Sell,  transfer,  lease to others or otherwise  dispose of
         any of its assets or cancel or compromise  any debt or claim,  or waive
         or release any right or claim of material value, except in the ordinary
         course of business  and  consistent  with past  practices  and safe and
         sound banking principles;

                  (m) Make any change in the rate of  compensation,  commission,
         bonus or other direct or indirect remuneration payable, or pay or agree
         or orally promise to pay, conditionally or otherwise,  any bonus, extra
         compensation,  pension or  severance  or  vacation  pay,  to or for the
         benefit of any of its shareholders,  directors,  officers, employees or
         agents, or enter into any employment or consulting contract (other than
         as  contemplated  by  this  Agreement)  or  other  agreement  with  any
         director,  officer or employee or adopt,  amend in any material respect
         or terminate any pension, employee welfare, retirement, stock purchase,




                                      A-50

<PAGE>



         stock option, stock appreciation rights, termination, severance, income
         protection, golden parachute, savings or profit-sharing plan (including
         trust agreements and  insurance  contracts embodying  such  plans), any
         deferred compensation, or  collective  bargaining agreement,  any group
         insurance contract or any other  incentive, welfare or employee benefit
         plan or agreement  maintained by it  for the benefit  of its directors,
         employees or former  employees, except (i)  employee severance benefits
         contemplated  by  Section  12.16  of  this  Agreement,  and (ii) in the
         ordinary course of business and consistent with past practices and safe
         and sound banking principles;

                  (n) Except for improvements or betterments relating to Pacific
         Properties,  make any  capital  expenditures  or capital  additions  or
         betterments in excess of an aggregate of $1,000,000;

                  (o) Hire or employ any person as a replacement for an existing
         position with an annual salary equal to or greater than $60,000 or hire
         or employ any person for any newly created position;

                  (p) Sell or knowingly  dispose of, or otherwise  divest itself
         of the  ownership,  possession,  custody or control,  of any  corporate
         books or records of any nature that, in accordance  with sound business
         practice,  normally  are retained for a period of time after their use,
         creation or receipt, except at the end of the normal retention period;

                  (q) Make any, or acquiesce with any,  change in any accounting
         methods,  principles  or  material  practices,  except as  required  by
         changes in GAAP as concurred in by Pacific's independent auditors;

                  (r) Sell any investment  securities in a transaction involving
         a book gain or loss of more than  $100,000 on such sale or purchase any
         investment  securities other than purchases of U.S. Treasury securities
         with a maturity of two years or less (and only after  giving  notice to
         SBB of any purchases in excess of $5,000,000);

                  (s) Make,  renew,  extend the maturity of, or alter any of the
         material  terms of any loan,  other than  classified  loans  (which are
         addressed  in Section  5.06(t),  to any single  borrower and his or her
         related  interests  in excess of the  principal  amount of  $2,000,000;
         provided,  however,  that SBB shall be deemed to have given its consent
         under this Section  5.06(s)  unless SBB objects to such  transaction no
         later than 48 hours  (weekends and bank holidays shall not count) after
         actual  receipt  by SBB  of all  information  relating  to the  making,
         renewal or alteration of such loan;

                  (t) Make,  renew,  extend the maturity of, or alter any of the
         material terms of any classified loan to any single borrower and his or
         her related  interests in excess of the  principal  amount of $250,000;
         provided,  however,  that SBB shall be deemed to have given its consent
         under this Section  5.06(t)  unless SBB objects to such  transaction no
         later than 48 hours  (weekends and bank holidays shall not count) after
         actual  receipt  by SBB  of all  information  relating  to the  making,
         renewal or alteration of such loan; or




                                      A-51

<PAGE>



                  (u) Create any new branches or enter into any  acquisitions or
         leases  of  real   property,   including  both  new  leases  and  lease
         extensions.

         SECTION  5.07  Access;  Pre-Closing   Investigation.   Subject  to  the
provisions  of  Article  XI,  Pacific  shall  afford  the  officers,  directors,
employees,   attorneys,   accountants,   investment   bankers   and   authorized
representatives  of SBB full  access to the  properties,  books,  contracts  and
records  of  Pacific  and the  Pacific  Subsidiaries,  permit  SBB to make  such
inspections  (including  without  limitation  with  regard  to  such  properties
physical  inspection  of the surface and  subsurface  thereof and any  structure
thereon  pursuant to Section 5.15) as they may require and furnish to SBB during
such period all such information concerning Pacific and the Pacific Subsidiaries
and its affairs as SBB may reasonably  request,  in order that SBB may have full
opportunity to make such reasonable  investigation as it shall desire to make of
the  affairs  of  Pacific  and  the  Pacific  Subsidiaries,  including,  without
limitation,  access  sufficient  to verify the absence of any  Material  Adverse
Change  with  respect  to  Pacific,  the  accuracy  of the  representations  and
warranties  made by Pacific in this  Agreement,  the value of the assets and the
liabilities of Pacific and the satisfaction of the conditions precedent to SBB's
obligations described in Article VIII of this Agreement.  SBB shall use its best
efforts not to disrupt  the normal  business  operations  of the Pacific and the
Pacific  Subsidiaries.  Pacific  agrees at any time,  and from time to time,  to
furnish to SBB as soon as practicable,  any additional  information that SBB may
reasonably request.

         SECTION 5.08 Director and Committee Meetings. Pacific shall give notice
to two (2)  designees of SBB and shall invite such persons to attend all regular
and special  meetings of the Board of  Directors  of Pacific and all regular and
special  meetings  of any  board or  senior  management  committee  of  Pacific,
provided, however, that Pacific reserves the right to exclude such invitees from
any portion of any such meeting at any time.  Such invitees  shall be designated
by  SBB  subject  to  the  consent  of  Pacific,  which  consent  shall  not  be
unreasonably withheld. In addition, Pacific shall provide SBB with copies of the
minutes of all regular and special meetings of the Board of Directors of Pacific
and  minutes  of all  regular  and  special  meetings  of any  board  or  senior
management  committee  of Pacific  (except  portions of such  minutes  which are
devoted to the  discussion  of this  Agreement or the Merger or which,  upon the
advise of counsel,  are otherwise  privileged).  Copies of such minutes shall be
provided  to SBB  within  five  (5)  business  days  following  the date of such
meeting.

         SECTION 5.09 Additional  Financial  Statements.  Pacific shall promptly
furnish  SBB with true and  complete  copies of (i) Call  Reports of each of the
Subsidiary Banks for the quarter ended June 30, 1998 and each quarter thereafter
until the Effective Date, (ii) monthly directors' reports of Pacific,  and (iii)
unaudited month-end financial statements of Pacific.

         SECTION 5.10 Untrue Representations.  Pacific shall promptly notify SBB
in writing if Pacific  becomes aware of any fact or condition that makes untrue,
or shows to have been untrue, in any material respect, any schedule or any other
information  furnished  to SBB or any  representation  or  warranty  made  in or
pursuant to this  Agreement or that results in Pacific's  failure to comply with
any covenant, condition or agreement contained in this Agreement.





                                      A-52

<PAGE>



         SECTION 5.11  Litigation and Claims.  Pacific shall promptly notify SBB
in  writing  of any  litigation,  or of any  claim,  controversy  or  contingent
liability that is expected to become the subject of litigation,  against Pacific
or any Pacific  Subsidiary  or affecting any of their  respective  properties if
such  litigation or potential  litigation  would, in the event of an unfavorable
outcome,  result in a Material  Adverse  Change  with  respect to  Pacific,  and
Pacific shall  promptly  notify SBB of any legal  action,  suit or proceeding or
judicial,  administrative  or  governmental  investigation,  pending  or, to the
knowledge of Pacific,  threatened against Pacific or any Pacific Subsidiary that
questions  or is  likely to  question  the  validity  of this  Agreement  or the
agreements  contemplated  hereby,  including,  but not  limited  to,  the Merger
Agreement  or any  actions  taken or to be taken by Pacific  pursuant  hereto or
thereto or seeks to enjoin or otherwise  restrain the transactions  contemplated
hereby or thereby.

         SECTION 5.12 Adverse  Changes.  Pacific  shall  promptly  notify SBB in
writing if any change or development shall have occurred or, to the knowledge of
Pacific,  been  threatened  (or any  development  shall  have  occurred  or been
threatened involving a prospective change) in the business, financial condition,
operations or prospects of Pacific or the Pacific  Subsidiaries  that has or may
reasonably be expected to have or lead to a Material Adverse Change with respect
to Pacific or that would adversely affect, prevent or delay the obtaining of any
regulatory  approval for the  consummation of the  transactions  contemplated by
this  Agreement.  Notwithstanding  the  disclosure  to SBB of any  such  change,
Pacific shall not be relieved of any liability to SBB pursuant to this Agreement
for, nor shall the providing of such  information  by Pacific to SBB be deemed a
waiver by SBB of,  the  breach of any  representation  or  warranty  of  Pacific
contained in this Agreement.

         SECTION 5.13 No  Negotiation  with Others.  Until the Effective Date or
the  earlier  termination  of this  Agreement,  Pacific  shall not,  directly or
indirectly,  nor  shall it permit  any of its  officers,  directors,  employees,
representatives or agents to, directly or indirectly: (i) encourage,  solicit or
initiate discussions or negotiations with, or (ii) except upon advice of counsel
to the extent required to fulfill the fiduciary  duties owed to the shareholders
of Pacific, entertain, discuss or negotiate with, or provide any information to,
or cooperate with, any corporation, partnership, person or other entity or group
(other than SBB or its Affiliates or associates or officers, partners, employees
or other  authorized  representatives  of SBB or such  Affiliates or associates)
concerning any merger, tender offer or other takeover offer, sale of substantial
assets,  sale of  shares  of  capital  stock or  similar  transaction  involving
Pacific.  As soon as practicable  following  receipt of any unsolicited  written
offer,  Pacific will communicate to SBB the terms of any proposal or request for
information.

         SECTION 5.14 Consents and Approvals. Pacific shall use its best efforts
to obtain at the earliest practicable time all consents and approvals from third
parties necessary to consummate the transactions contemplated by this Agreement.

         SECTION 5.15 Environmental Investigation; Right to Terminate Agreement.

         (a) SBB and its consultants,  agents and representatives shall have the
right, to the same extent that Pacific has such right, but not the obligation or
responsibility, to inspect any Pacific Property, including, without  limitation,




                                      A-53

<PAGE>



conducting  asbestos  surveys  and  sampling,   environmental   assessments  and
investigation,  and other environmental  surveys and analyses including soil and
ground  sampling  ("Environmental  Inspections")  at any time on or prior to the
date which is forty-five (45) calendar days from the date of this Agreement. SBB
shall notify Pacific prior to any physical  inspections of the Pacific Property,
and Pacific may place reasonable  restrictions on the time of such  inspections.
If,  as a result of any such  Environmental  Inspection,  further  investigation
("secondary  investigation") including,  without limitation, test borings, soil,
water and  other  sampling  is deemed  desirable  by SBB,  SBB shall (i)  notify
Pacific of any Pacific Property for which it intends to conduct such a secondary
investigation  and the  reasons  for  such  secondary  investigation,  and  (ii)
commence such  secondary  investigation,  on or prior to the date which is sixty
(60) calendar days from the date of this  Agreement.  SBB shall give  reasonable
notice to  Pacific  of such  secondary  investigations,  and  Pacific  may place
reasonable time and place restrictions on such secondary investigations.

         (b) SBB shall have the right to  terminate  this  Agreement  if (i) the
factual substance of any warranty or representation set forth in Section 3.19 is
not true  and  accurate;  (ii) the  results  of such  Environmental  Inspection,
secondary  investigation  or other  environmental  survey are disapproved by SBB
because  the  environmental   inspection,   secondary   investigation  or  other
environmental   survey   identifies   violations  or  potential   violations  of
Environmental  Laws;  (iii)  Pacific  has  refused  to allow SBB to  conduct  an
Environmental  Inspection  or  secondary  investigation  in a  manner  that  SBB
reasonably considers  necessary;  (iv) the Environmental  Inspection,  secondary
investigation  or other  environmental  survey  identifies  any past or  present
event,  condition  or  circumstance  that  would or  potentially  would  require
remedial or cleanup  action by Pacific that would  result in a Material  Adverse
Change;  (v) the  Environmental  Inspection,  secondary  investigation  or other
environmental  survey identifies the presence of any underground or above ground
storage  tank in, on or under any  Pacific  Property  that is not shown to be in
compliance with all Environmental Laws applicable to the tank either now or at a
future  time  certain,  or that has had a release  of  petroleum  or some  other
Hazardous  Material  that has not been  cleaned  up to the  satisfaction  of the
relevant governmental  authority or any other party with a legal right to compel
cleanup; or (vi) the Environmental Inspection,  secondary investigation or other
environmental survey identifies the presence of any asbestos-containing material
in, on or under any Pacific  Property,  the  removal of which would  result in a
Material  Adverse Change.  On or prior to the date which is ninety (90) calendar
days from the date of this Agreement,  SBB shall advise Pacific in writing as to
whether SBB intends to terminate this Agreement in accordance  with Section 9.02
because  SBB  disapproves  of  the  results  of  the  Environmental  Inspection,
secondary  investigation or other environmental  survey.  Pacific shall have the
opportunity  to correct  any  objected  to  violations  or  conditions  to SBB's
reasonable satisfaction prior to the date which is one hundred and fifteen (115)
calendar days from the date of this  Agreement.  In the event that Pacific fails
to demonstrate  its  satisfactory  correction of the violations or conditions to
SBB, SBB may  terminate the Agreement on or before the date which is one hundred
and twenty-five (125) days from the date of this Agreement.

         (c) Pacific agrees to make available to SBB and its consultants, agents
and  representatives  all documents and other material relating to environmental
conditions of any Pacific Property including, without limitation, the results of
other  environmental  inspections  and  surveys.  Pacific  also  agrees that all




                                      A-54

<PAGE>



engineers  and  consultants  who prepared or furnished  such reports may discuss
such reports and information  with SBB and shall be entitled to certify the same
in favor of SBB and its  consultants,  agents and  representatives  and make all
other data available to SBB and its consultants, agents and representatives.

         (d) For  purposes  of this  Section,  the term  "Pacific  Property"  or
"Pacific Properties" shall have the same meaning given in Section 3.19(e).

         SECTION 5.16 Restrictions on Resales. At least forty (40) days prior to
the Closing Date,  Pacific shall deliver to SBB a list  identifying  each person
who may  reasonably be deemed an  "affiliate"  of Pacific  within the meaning of
such term as used in Rule 145 under the Securities Act. Pacific shall obtain and
deliver to SBB, not less than  thirty-one  (31) days prior to the Closing  Date,
the signed  agreement,  in the form of  Exhibit  "F"  hereto  (the  "Shareholder
Letter"),  of each  "affiliate" of Pacific,  and of any person who may become an
"affiliate"  of  Pacific  after  the  date  of  this  Agreement,  regarding  (i)
compliance  with the provisions of such Rule 145, and (ii)  compliance  with the
requirements  of  Accounting  Principles  Board  Opinion  No. 16  regarding  the
disposition  of shares of Pacific Common Stock or SBB Common Stock (or reduction
of risk with respect thereto) until such time as the financial  results covering
at  least  thirty  (30)  days  of  post-Merger  combined  operations  have  been
published.  Pacific  shall  notify  all  "affiliates"  as far in  advance  as is
reasonably  practicable of the date on which the thirty (30) day period prior to
the Closing Date is likely to begin.

         SECTION  5.17  Shareholder  Lists.  After  the date of this  Agreement,
Pacific shall from time to time make  available to SBB, upon request,  a list of
its  shareholders  and their  addresses,  a list  showing all  transfers  of the
Pacific Common Stock and such other  information  as SBB may reasonably  request
regarding both the ownership and prior transfers of the Pacific Common Stock.

         SECTION  5.18  Employee  Pension  Plans.  Pacific  agrees the  employee
pension  plans of Pacific,  including  the Pacific  Capital  401(k) Plan and the
Pacific  Employee  Stock  Ownership  Plan  (collectively,  the "Pacific  Pension
Plans") may be frozen,  modified or merged into similar  employee  pension plans
maintained by SBB or SBB&T,  including  the Santa Barbara Bank & Trust  Employee
Stock Ownership Plan and the Santa Barbara Bank & Trust 401(k) Plan, on or after
the Effective  Date, as  determined  by the  Surviving  Corporation  in its sole
discretion,  subject to  compliance  with  applicable  law,  so long as any such
action  preserves the rights of the  participants  in such Pacific Pension Plans
(including, without limitation, vesting rights).

         SECTION  5.19  Employee  Welfare  Benefit  Plans.  Pacific  agrees that
Pacific's  employee  welfare benefit plans, as defined in Section 3(1) of ERISA,
may be  terminated,  modified or merged into SBB's  welfare  benefit plans on or
after the Effective Date, as determined by the Surviving Corporation in its sole
discretion, subject to compliance with applicable law so long as any such action
preserves the rights of participants in such plans.

         SECTION 5.20  Director  Voting.  Pacific  shall use its best efforts to
have each of its directors  agree to vote,  or cause to be voted,  all shares of
Pacific  Common Stock  beneficially  owned by them at the Pacific  Shareholders'
Meeting in favor  of the Merger.  Subject to such  directors' fiduciary  duties,




                                      A-55

<PAGE>



each such director shall execute such  documents as are reasonably  necessary to
evidence  their  determination  to vote their shares of Pacific  Common Stock in
favor of the Merger at the Pacific Shareholders' Meeting.

         SECTION 5.21 Dividends. Pacific shall not declare, set aside or pay any
dividend in respect of the Pacific  Common Stock or make any other  distribution
to shareholders (including, without limitation, any stock dividend, dividends in
kind or other distribution), whether in cash, stock or other property, after the
date of this  Agreement,  except  that  Pacific  may declare and pay its regular
quarterly  dividend on the Pacific Common Stock not to exceed $0.25 per share at
approximately  the same  time  during  each  quarter  which it has  historically
declared and paid such dividend;  provided,  however, that Pacific and SBB shall
cooperate  with each other to  coordinate  the record and payment dates of their
respective  dividends  for the quarter in which the  Effective  Date occurs such
that the holders of Pacific Common Stock shall receive a quarterly dividend from
either Pacific or SBB, but not from both with respect to such quarter.

         SECTION 5.22 Non-Compete Agreements. Prior to the Closing Date, Pacific
shall use its best  efforts to cause each of the persons  identified  on Exhibit
"G" to enter into an agreement not to compete with the Surviving  Corporation to
be dated as of the Closing Date and to become  effective on the  Effective  Date
(each a  "Non-Compete  Agreement").  The form of the Non-  Compete  Agreement is
attached as Exhibit "G" hereto.

         SECTION 5.23 Pooling of Interests Accounting Treatment.  Pacific shall,
and shall use its best efforts to cause its  directors  and officers to, use all
commercially  reasonable  efforts  not  inconsistent  with  the  terms  of  this
Agreement to structure and consummate the Merger and all actions related thereto
in a manner that will qualify the Merger for "pooling of  interests"  accounting
treatment  as  determined  by  SBB's  independent  accounting  firm  and  by any
securities  regulatory  body  which  shall  review the  Registration  Statement,
including without limitation, the S.E.C.

         SECTION 5.24  Disclosure  Schedules.  Pacific agrees at or prior to the
Closing to provide SBB with  supplemental  Schedules  to be delivered by Pacific
pursuant to this Agreement  reflecting any material  changes thereto between the
date of this Agreement and the Closing Date.


                                   ARTICLE VI.
                                COVENANTS OF SBB

         SBB hereby makes the covenants set forth in this Article VI to Pacific.

         SECTION 6.01 Best Efforts. SBB will use its best efforts to perform and
fulfill all conditions and  obligations on its part to be performed of fulfilled
under  this  Agreement  and  to  cause  the  consummation  of  the  transactions
contemplated  hereby  in  accordance  with  the  terms  and  conditions  of this
Agreement.





                                      A-56

<PAGE>



         SECTION 6.02 Merger  Agreement.  SBB will, as soon as practicable after
the execution of this Agreement,  enter into the Merger  Agreement,  the form of
which is attached  hereto as Exhibit  "A",  and  perform all of its  obligations
thereunder.

         SECTION 6.03  Regulatory Approvals and Registration Statement.

         (a) SBB, with the cooperation of Pacific,  shall promptly file or cause
to be filed applications for all regulatory approvals required to be obtained by
SBB in connection with this Agreement and the transactions  contemplated hereby,
including but not limited to the necessary  applications  for the prior approval
of the  Merger by the  Federal  Reserve  under the BHCA.  SBB shall use its best
efforts to obtain all such  regulatory  approvals and any other  approvals  from
third parties at the earliest practicable time.

         (b) SBB shall  reserve and make  available  for issuance in  connection
with the  Merger and in  accordance  with the terms of this  Agreement,  the SBB
Common Stock for the Merger  Consideration  and shall,  with the  cooperation of
Pacific,  file with the S.E.C. the Registration  Statement,  which  Registration
Statement will contain the Joint Proxy  Statement/Prospectus,  and SBB shall use
its best efforts to cause the Registration Statement to become effective. At the
time the Registration  Statement becomes effective,  the Registration  Statement
shall comply in all material  respects with the provisions of the Securities Act
and the published  rules and regulations  thereunder,  and shall not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated  therein or  necessary  to make the  statements  therein  not false or
misleading,  and at the time of mailing  thereof to the  shareholders of SBB and
Pacific,  at the time of the SBB  Shareholders's  Meeting (as defined in Section
6.04) and the Pacific Shareholders' Meeting and on the Effective Date, the Joint
Proxy  Statement/Prospectus  included as part of the Registration  Statement, as
amended or  supplemented  by any amendment or supplement,  shall not contain any
untrue statement of a material fact or omit to state any material fact necessary
to make the statements therein not false or misleading.

         (c) SBB  shall  timely  file  all  documents  required  to  obtain  all
necessary  Blue Sky permits  and  approvals,  if any,  required to carry out the
transactions  contemplated  by this Agreement,  shall pay all expenses  incident
thereto and shall use its best efforts to obtain such permits and approvals on a
timely basis.

         (d)  SBB  shall  promptly  and  properly   prepare  and  file  (i)  any
application  required  to list on Nasdaq the  shares of SBB  Common  Stock to be
issued pursuant to the Merger,  and (ii) any filings required under the Exchange
Act, relating to the Merger and the transactions contemplated herein.

         (e) SBB shall keep Pacific reasonably informed as to the status of such
applications and filings, and SBB shall promptly furnish Pacific and its counsel
with  copies of all such  regulatory  filings and all  correspondence  for which
confidential treatment has not been requested.





                                      A-57

<PAGE>



         (f) SBB shall not take any action at any time after the Effective  Date
which  would  cause the Merger not to  qualify  as a  reorganization  within the
meaning of Section 368 of the Code.

         SECTION 6.04 Submission of Merger and Related Matters to  Shareholders.
SBB shall:

                  (a) Duly call,  give notice of,  convene  and hold,  on a date
         mutually  selected by SBB and  Pacific,  a meeting of its  shareholders
         (the  "SBB  Shareholders'  Meeting")  as  soon as  practicable  for the
         purpose  of (i)  approving  and  adopting  the  Merger  and the  Merger
         Agreement  and the  transactions  contemplated  hereby  and  thereby as
         required by the GCL,  and (ii)  approving  and adopting an amendment to
         the Bylaws of SBB to increase the number of  authorized  directors  who
         may serve on the  Board of  Directors  of SBB to not more than  fifteen
         (15) persons (the "Bylaw Amendment");

                  (b) Not impose a requirement that the holders of more than the
         minimum required  percentage (as set forth in SBB's current Articles of
         Incorporation,  current  Bylaws or  pursuant to  provisions  of the GCL
         requiring the lowest  percentage vote) of the SBB Common Stock entitled
         to vote on the Merger and the Merger  Agreement and the Bylaw Amendment
         approve the Merger and the Merger Agreement and the Bylaw Amendment;

                  (c)  Subject  to the  fiduciary  duties  of the SBB  Board  of
         Directors  to the  shareholders  of SBB, (i) include in the Joint Proxy
         Statement/Prospectus  the  recommendation of the SBB Board of Directors
         that the shareholders of SBB vote in favor of the approval and adoption
         of  the  Merger  and  the  Merger   Agreement   and  the   transactions
         contemplated  hereby and thereby and the Bylaw Amendment,  (ii) use its
         best efforts to obtain such shareholder  approval of the Merger and the
         Merger Agreement and the Bylaw Amendment,  and (iii) perform such other
         acts as may  reasonably  be  requested  by Pacific to ensure  that such
         shareholder  approval  of the Merger and the Merger  Agreement  and the
         Bylaw Amendment is obtained; and

                  (d) Cause the Joint Proxy Statement/Prospectus to be mailed to
         the shareholders of SBB as soon as practicable.

         SECTION 6.05  Information for  Applications  and  Statements.  SBB will
promptly,  but in no event later than ten (10)  business days after receipt of a
request by  Pacific,  furnish to Pacific  all  information,  data and  documents
concerning SBB, including,  but not limited to, financial  statements,  required
for inclusion in any application or statement to be made by Pacific to, or filed
by Pacific  with,  any  governmental  body in connection  with the  transactions
contemplated  by this Agreement,  or in connection  with any other  transactions
during the pendency of this Agreement,  and SBB represents and warrants that all
information so furnished for such statements and applications  shall be true and
correct in all material  respects and shall not omit any material  fact required
to be stated therein or necessary to make the  statements  made, in light of the
circumstances  under which they were made, not  misleading.  SBB shall otherwise
fully  cooperate  with  Pacific  in the  filing  of any  applications  or  other
documents  necessary  to  consummate  the  transactions   contemplated  by  this
Agreement.




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<PAGE>



         SECTION 6.06  Required  Acts of SBB.  Prior to the Closing,  SBB shall,
and,  as  applicable,  shall cause the SBB  Subsidiaries  to,  unless  otherwise
permitted in writing by Pacific:

                  (a) Operate only  in the ordinary  course of business and con-
         sistent with prudent banking practices;

                  (b) Except as required by prudent business practices,  use all
         reasonable efforts to preserve its business  organization intact and to
         retain its present customers, depositors and employees, and to maintain
         all offices, machinery,  equipment,  materials, supplies,  inventories,
         vehicles  and other  properties  owned,  leased or used by it  (whether
         under  its  control  or the  control  of  others),  in  good  operating
         condition and repair, ordinary wear and tear excepted;

                  (c) Perform all of its obligations under contracts, leases and
         documents relating to or affecting its assets, properties and business,
         except such obligations as SBB may in good faith reasonably dispute;

                  (d) Maintain in full force and effect all  insurance  policies
         now in effect or renewals  thereof  and,  except as required by prudent
         business practices that do not jeopardize insurance coverage,  give all
         notices and present all claims under all insurance  policies in due and
         timely fashion;

                  (e) File all reports  required  to be filed with  governmental
         authorities and observe and conform,  in all material respects,  to all
         applicable  laws,  rules,  regulations,   ordinances,   codes,  orders,
         licenses  and permits,  except  those being  contested in good faith by
         appropriate proceedings;

                  (f) Timely file all tax returns required to be filed by it and
         promptly  pay all taxes,  assessments,  governmental  charges,  duties,
         penalties, interest and fines that become due and payable, except those
         being contested in good faith by appropriate proceedings;

                  (g) Withhold  from each payment made to each of its  employees
         the amount of all taxes (including,  but not limited to, federal income
         taxes,  FICA taxes and state and local income and wage taxes)  required
         to be withheld  therefrom  and pay the same to the proper tax receiving
         officers; and

                  (h) Account  for all  transactions  and prepare all  financial
         statements of SBB in accordance with GAAP (unless otherwise  instructed
         by RAP in which  instance  account for such  transaction  in accordance
         with RAP).

         SECTION 6.07 Prohibited Acts of SBB. Prior to the Closing,  SBB and, as
applicable, the SBB Subsidiaries shall not, without the prior written consent of
Pacific:

                  (a) Take any action that would  reasonably be  anticipated  to
         result in a Material Adverse Change with respect to SBB;




                                      A-59

<PAGE>



                  (b) Take or fail to take any action that would cause or permit
         the  representations  and  warranties  made in  Article IV hereof to be
         inaccurate  at the time of the Closing or preclude SBB from making such
         representations and warranties at the time of the Closing;

                  (c)  Except as  contemplated  by this  Agreement,  change  its
         Articles of Incorporation or Bylaws or its authorized capital stock, or
         change the  Articles of  Incorporation,  Bylaws or  authorized  capital
         stock of any SBB Subsidiary;

                  (d) Except as explicitly  permitted hereunder or in accordance
         with  applicable  law,  engage in any  transaction  with any affiliated
         person or allow such  persons to acquire any assets from SBB or any SBB
         Subsidiary  except  in the form of  wages,  salaries,  fees  for  legal
         services and  reimbursement  of expenses and by loans secured by liquid
         collateral  having a fair market value at least equal to the  principal
         balance due on such loan to its  officers,  directors  and employees in
         the ordinary course of business;

                  (e) Discharge or satisfy any lien,  charge or  encumbrance  or
         pay any obligation or liability, whether absolute or contingent, due or
         to become due,  except in the  ordinary  course of business  consistent
         with prudent banking  practices and except for liabilities  incurred in
         connection with the transactions contemplated hereby;

                  (f) Except as  provided in Section  6.19,  declare or make any
         payment of  dividends or other  distributions  to its  shareholder,  or
         purchase,  retire or redeem, or obligate itself to purchase,  retire or
         redeem, any of its shares of capital stock or other securities;

                  (g)  Except  as  required   pursuant  to  the  terms  of  this
         Agreement,  and except for the issuance of SBB Common Stock pursuant to
         the valid  exercise of SBB Stock  Options,  as defined in Section  4.03
         hereof,  which are  outstanding on the date of this  Agreement,  issue,
         reserve for  issuance,  grant,  sell or  authorize  the issuance of any
         shares  of its  capital  stock or other  securities  or  subscriptions,
         options, warrants, calls, rights or commitments of any kind relating to
         the issuance thereto;

                  (h)  Grant any new stock  options or accelerate the vesting of
         any existing stock options, except as provided in this Agreement;

                  (i)  Accelerate the  vesting of pension  or other benefits  in
         favor of employees of SBB or any SBB Subsidiary;

                  (j) Acquire any capital  stock or other equity  securities  or
         acquire  any equity or  ownership  interest  in any bank,  corporation,
         partnership  or  other  entity   (except  (i)  through   settlement  of
         indebtedness,  foreclosure,  or the exercise of creditors'  remedies or
         (ii) in a fiduciary capacity, the ownership of which does not expose it
         to any liability  from the business,  operations or liabilities of such
         person);





                                      A-60

<PAGE>



                  (k)  Mortgage,  pledge or subject to lien or charge,  or grant
         any security  interest or any other  encumbrance or restriction  any of
         its property,  business or assets, tangible or intangible except in the
         ordinary  course  of  business  and  consistent  with  prudent  banking
         practices;

                  (l) Sell,  transfer,  lease to others or otherwise  dispose of
         any of its assets or cancel or compromise  any debt or claim,  or waive
         or release any right or claim of material value, except in the ordinary
         course of business  and  consistent  with past  practices  and safe and
         sound banking principles;

                  (m) Make any change in the rate of  compensation,  commission,
         bonus or other direct or indirect remuneration payable, or pay or agree
         or orally promise to pay, conditionally or otherwise,  any bonus, extra
         compensation,  pension or  severance  or  vacation  pay,  to or for the
         benefit of any of its shareholders,  directors,  officers, employees or
         agents, or enter into any employment or consulting contract (other than
         as  contemplated  by  this  Agreement)  or  other  agreement  with  any
         director,  officer or employee or adopt,  amend in any material respect
         or terminate any pension, employee welfare, retirement, stock purchase,
         stock option, stock appreciation rights, termination, severance, income
         protection, golden parachute, savings or profit-sharing plan (including
         trust  agreements and insurance  contracts  embodying such plans),  any
         deferred  compensation,  or collective bargaining agreement,  any group
         insurance contract or any other incentive,  welfare or employee benefit
         plan or agreement  maintained  by it for the benefit of its  directors,
         employees  or  former  employees,  except  in the  ordinary  course  of
         business and consistent  with past practices and safe and sound banking
         principles;

                  (n) Except for  improvements  or  betterments  relating to SBB
         Properties,  make any  capital  expenditures  or capital  additions  or
         betterments in excess of an aggregate of $2,000,000;

                  (o) Hire or employ any person as a replacement for an existing
         position with an annual salary equal to or greater than $120,000;

                  (p) Sell or knowingly  dispose of, or otherwise  divest itself
         of the  ownership,  possession,  custody or control,  of any  corporate
         books or records of any nature that, in accordance  with sound business
         practice,  normally  are retained for a period of time after their use,
         creation or receipt, except at the end of the normal retention period;

                  (q) Make any, or acquiesce with any,  change in any accounting
         methods,  principles  or  material  practices,  except as  required  by
         changes in GAAP as concurred in by SBB's independent auditors;

                  (r) Make,  renew,  extend the maturity of, or alter any of the
         material  terms of any loan,  other than  classified  loans  (which are
         addressed  in Section  6.07(s),  to any single  borrower and his or her
         related  interests  in excess of the  principal  amount of  $4,000,000;
         provided,  however,  that  Pacific  shall be deemed  to have  given its
         consent under  this Section  6.07(r) unless  Pacific  objects  to  such




                                      A-61

<PAGE>



         transaction no later  than 48 hours  (weekends and bank  holidays shall
         not count) after actual receipt by Pacific of all information  relating
         to the making, renewal or alteration of such loan; or

                  (s) Make,  renew,  extend the maturity of, or alter any of the
         material terms of any classified loan to any single borrower and his or
         her related  interests in excess of the  principal  amount of $500,000;
         provided,  however,  that  Pacific  shall be deemed  to have  given its
         consent  under this  Section  6.07(s)  unless  Pacific  objects to such
         transaction  no later than 48 hours  (weekends and bank holidays  shall
         not count) after actual receipt by Pacific of all information  relating
         to the making, renewal or alteration of such loan.

         SECTION  6.08  Access;  Pre-Closing   Investigation.   Subject  to  the
provisions of Article XI, SBB shall afford the officers,  directors,  employees,
attorneys,  accountants,  investment  bankers and authorized  representatives of
Pacific full access to the properties,  books,  contracts and records of SBB and
the SBB  Subsidiaries,  permit  Pacific  to make  such  inspections  as they may
require  and  furnish  to  Pacific  during  such  period  all  such  information
concerning  SBB  and  the  SBB  Subsidiaries  and its  affairs  as  Pacific  may
reasonably request, in order that Pacific may have full opportunity to make such
reasonable  investigation  as it shall  desire to make of the affairs of SBB and
the SBB Subsidiaries, including, without limitation, access sufficient to verify
the absence of any Material  Adverse Change with respect to SBB, the accuracy of
the representations  and warranties made by SBB in this Agreement,  the value of
the assets and the  liabilities  of SBB and the  satisfaction  of the conditions
precedent to Pacific's  obligations  described in Article VII of this Agreement.
Pacific shall use its best efforts not to disrupt the normal business operations
of the SBB and the SBB  Subsidiaries.  SBB agrees at any time,  and from time to
time, to furnish to Pacific as soon as practicable,  any additional  information
that Pacific may reasonably request.

         SECTION 6.09 Director and Committee  Meeting.  SBB shall give notice to
two (2) designees of Pacific and shall invite such persons to attend all regular
and  special  meetings  of the Board of  Directors  of SBB and all  regular  and
special meetings of any board or senior management  committee of SBB,  provided,
however,  that SBB reserves the right to exclude such  invitees from any portion
of any such meeting at any time.  Such  invitees  shall be designated by Pacific
subject to the consent of SBB, which consent shall not be unreasonably withheld.
In addition, SBB shall provide Pacific with copies of the minutes of all regular
and special meetings of the Board of Directors of SBB and minutes of all regular
and special  meetings of all regular and special meetings of any board or senior
management  committee of SBB (except  portions of such minutes which are devoted
to the discussion of this  Agreement or the Merger or which,  upon the advise of
counsel, are otherwise privileged).  Copies of such minutes shall be provided to
Pacific within five (5) business days following the date of such meeting.

         SECTION  6.10  Additional  Financial  Statements.  SBB  shall  promptly
furnish  Pacific with true and complete  copies of (i) Call Reports of SBB&T for
the quarter ended June 30, 1998 and each quarter  thereafter until the Effective
Date,  (ii) monthly  directors'  reports of SBB, and (iii)  unaudited  month-end
financial statements of SBB.





                                      A-62

<PAGE>



         SECTION 6.11 Untrue Representations.  SBB shall promptly notify Pacific
in writing if SBB becomes aware of any fact or condition  that makes untrue,  or
shows to have been untrue,  in any material  respect,  any schedule or any other
information  furnished to Pacific or any  representation  or warranty made in or
pursuant to this  Agreement or that results in SBB's  failure to comply with any
covenant, condition or agreement contained in this Agreement.

         SECTION 6.12  Litigation and Claims.  SBB shall promptly notify Pacific
in  writing  of any  litigation,  or of any  claim,  controversy  or  contingent
liability that is expected to become the subject of  litigation,  against SBB or
any SBB  Subsidiary  or affecting  any of their  respective  properties  if such
litigation  or  potential  litigation  would,  in the  event  of an  unfavorable
outcome,  result in a Material Adverse Change with respect to SBB, and SBB shall
promptly  notify  Pacific of any legal  action,  suit or proceeding or judicial,
administrative  or governmental  investigation,  pending or, to the knowledge of
SBB,  threatened  against  SBB or any SBB  Subsidiary  that  questions  or might
question the validity of this Agreement or the agreements  contemplated  hereby,
including,  but not limited to, the Merger Agreement, or any actions taken or to
be taken by SBB  pursuant  hereto or  thereto  or seeks to  enjoin or  otherwise
restrain the transactions contemplated hereby or thereby.

         SECTION 6.13  Adverse  Change.  SBB shall  promptly  notify  Pacific in
writing if any change or development shall have occurred or, to the knowledge of
SBB, been threatened (or any development  shall have occurred or been threatened
involving a prospective change) in the business, financial condition, operations
or  prospects  of SBB or the SBB  Subsidiaries  that  has or may  reasonably  be
expected to have or lead to a Material  Adverse  Change  with  respect to SBB or
that would  adversely  affect,  prevent or delay the obtaining of any regulatory
approval  for  the  consummation  of  the  transactions   contemplated  by  this
Agreement.  Notwithstanding  the  disclosure to Pacific of any such change,  SBB
shall not be relieved of any  liability  to Pacific  pursuant to this  Agreement
for, nor shall the providing of such  information  by SBB to Pacific be deemed a
waiver by Pacific  of,  the  breach of any  representation  or  warranty  of SBB
contained in this Agreement.

         SECTION 6.14 No  Negotiation  with Others.  Until the Effective Date or
the  earlier  termination  of  this  Agreement,   SBB  shall  not,  directly  or
indirectly,  nor  shall it permit  any of its  officers,  directors,  employees,
representatives or agents to, directly or indirectly: (i) encourage,  solicit or
initiate discussions or negotiations with, or (ii) except upon advice of counsel
to the extent required to fulfill the fiduciary  duties owed to the shareholders
of SBB, entertain,  discuss or negotiate with, or provide any information to, or
cooperate with, any  corporation,  partnership,  person or other entity or group
(other than Pacific or its  Affiliates  or  associates  or  officers,  partners,
employees or other authorized  representatives  of Pacific or such Affiliates or
associates) concerning any merger, tender offer or other takeover offer, sale of
substantial  assets,  sale of shares of  capital  stock or  similar  transaction
involving SBB (unless any such  transaction  is expressly  conditioned  upon the
performance by SBB of all of SBB's obligations under this Agreement). As soon as
practicable  following  receipt  of any  unsolicited  written  offer,  SBB  will
communicate to Pacific the terms of any proposal or request for information.





                                      A-63

<PAGE>



         SECTION 6.15 Consents and Approvals.  SBB shall use its best efforts to
obtain all consents and approvals from third parties necessary to consummate the
transactions contemplated by this Agreement at the earliest practicable time.

         SECTION 6.16 Environmental Investigation; Right to Terminate Agreement.

         (a) Pacific and its consultants,  agents and representatives shall have
the right, to the same extent that SBB has such right, but not the obligation or
responsibility,  to inspect any SBB  Property,  including,  without  limitation,
conducting  asbestos  surveys  and  sampling,   environmental   assessments  and
investigation,  and other environmental  surveys and analyses including soil and
ground  sampling  ("Environmental  Inspections")  at any time on or prior to the
date which is forty-five  (45)  calendar  days from the date of this  Agreement.
Pacific shall notify SBB prior to any physical  inspections of the SBB Property,
and SBB may place reasonable  restrictions on the time of such inspections.  If,
as  a  result  of  any  such  Environmental  Inspection,  further  investigation
("secondary  investigation") including,  without limitation, test borings, soil,
water and other  sampling  is deemed  desirable  by Pacific,  Pacific  shall (i)
notify SBB of any SBB  Property for which it intends to conduct such a secondary
investigation  and the  reasons  for  such  secondary  investigation,  and  (ii)
commence such  secondary  investigation,  on or prior to the date which is sixty
(60)  calendar  days  from  the  date  of this  Agreement.  Pacific  shall  give
reasonable  notice to SBB of such  secondary  investigations,  and SBB may place
reasonable time and place restrictions on such secondary investigations.

         (b) Pacific shall have the right to terminate this Agreement if (i) the
factual substance of any warranty or representation set forth in Section 4.19 is
not true  and  accurate;  (ii) the  results  of such  Environmental  Inspection,
secondary investigation or other environmental survey are disapproved by Pacific
because  the  environmental   inspection,   secondary   investigation  or  other
environmental   survey   identifies   violations  or  potential   violations  of
Environmental  Laws;  (iii) SBB has  refused  to allow  Pacific  to  conduct  an
Environmental  Inspection  or secondary  investigation  in a manner that Pacific
reasonably considers  necessary;  (iv) the Environmental  Inspection,  secondary
investigation  or other  environmental  survey  identifies  any past or  present
event,  condition  or  circumstance  that  would or  potentially  would  require
remedial  or  cleanup  action by SBB that  would  result in a  Material  Adverse
Change;  (v) the  Environmental  Inspection,  secondary  investigation  or other
environmental  survey identifies the presence of any underground or above ground
storage  tank  in,  on or  under  any SBB  Property  that is not  shown to be in
compliance with all Environmental Laws applicable to the tank either now or at a
future  time  certain,  or that has had a release  of  petroleum  or some  other
Hazardous  Material  that has not been  cleaned  up to the  satisfaction  of the
relevant governmental  authority or any other party with a legal right to compel
cleanup; or (vi) the Environmental Inspection,  secondary investigation or other
environmental survey identifies the presence of any asbestos-containing material
in,  on or under  any SBB  Property,  the  removal  of which  would  result in a
Material  Adverse Change.  On or prior to the date which is ninety (90) calendar
days from the date of this Agreement,  Pacific shall advise SBB in writing as to
whether  Pacific  intends to terminate this Agreement in accordance with Section
9.02 because Pacific disapproves of the results of the Environmental Inspection,
secondary  investigation  or other  environmental  survey.  SBB  shall  have the
opportunity  to correct any objected to  violations  or  conditions to Pacific's
reasonable satisfaction prior to the date which is one hundred and fifteen (115)




                                      A-64

<PAGE>



calendar  days from the date of this  Agreement.  In the event that SBB fails to
demonstrate  its  satisfactory  correction  of the  violations  or conditions to
Pacific,  Pacific may terminate the Agreement on or before the date which is one
hundred and twenty-five (125) days from the date of this Agreement.

         (c) SBB agrees to make available to Pacific and its consultants, agents
and  representatives  all documents and other material relating to environmental
conditions of any SBB Property  including,  without  limitation,  the results of
other environmental  inspections and surveys. SBB also agrees that all engineers
and  consultants who prepared or furnished such reports may discuss such reports
and information  with Pacific and shall be entitled to certify the same in favor
of Pacific and its consultants,  agents and  representatives  and make all other
data available to Pacific and its consultants, agents and representatives.

         (d) For  purposes  of this  Section,  the term "SBB  Property"  or "SBB
Properties" shall have the same meaning given in Section 4.19(e).

         SECTION 6.17 Stock Options.

         (a) On the Effective Date, each  outstanding  option to purchase shares
of Pacific  Common  Stock (a  "Pacific  Stock  Option")  issued  pursuant to the
Pacific Capital Bancorp 1984 Stock Option Plan, the Pacific Capital Bancorp 1994
Stock Option Plan and the Pacific  Capital  Bancorp 1991 Directors  Stock Option
Plan (together, the "Pacific Stock Option Plans"), whether or not exercisable or
vested,  shall be assumed by SBB as  hereinafter  provided.  Each Pacific  Stock
Option shall be deemed to constitute an option to acquire, on the same terms and
conditions as were  applicable  under such Pacific  Stock Option,  the number of
full shares of SBB Common Stock  calculated in accordance  with the provision of
Section 1.06(b). In no event shall SBB be required to issue fractional shares of
SBB Common Stock upon the exercise of a converted option.

         (b) SBB shall  reserve and make  available  for issuance in  connection
with the Merger and in accordance with the terms of this Agreement the number of
full shares of SBB Common Stock  calculated in accordance with Section  1.06(b).
As soon as  practicable  after the  Effective  Date,  SBB shall  deliver to each
holder of Pacific Stock Options  appropriate notices setting forth such holders'
rights pursuant to the Pacific Stock Option Plans, and the agreements evidencing
the grants of such Pacific Stock  Options  shall  continue in effect on the same
terms and  conditions  (subject to the  conversion  required by Section  1.06(b)
after giving effect to the Merger and the assumption by SBB as set forth above).
To the extent  necessary to effectuate  the provisions of this Section 6.17, SBB
may deliver new or amended agreements reflecting the terms of each Pacific Stock
Option  assumed by SBB and amend the Pacific  Stock  Option Plans to reflect the
terms hereof.

         (c) As soon as  practicable  after the Effective  Date,  SBB shall file
with the S.E.C. a registration  statement on an appropriate form with respect to
the shares of SBB Common Stock subject to such converted options,  and shall use
its best efforts to maintain the effectiveness of such registration statement or
registration   statements   (and  maintain  the  status  of  the  prospectus  or
prospectuses   with  respect  thereto)  for  so  long  as  such  options  remain
outstanding.




                                      A-65

<PAGE>



         SECTION  6.18  Director  and  Officer  Liability  Insurance.  Upon  the
Effective  Date,  any  executive  officer or director of Pacific who becomes and
officer  or  director  of SBB  (including  any  subsidiaries  thereof)  shall be
included in SBB's director and officer insurance policy.

         SECTION 6.19  Dividends.  SBB shall not  declare,  set aside or pay any
dividend in respect of the SBB Common  Stock or make any other  distribution  to
shareholders (including,  without limitation,  any stock dividend,  dividends in
kind or other distribution), whether in cash, stock or other property, after the
date  of  this  Agreement,  except  that  SBB may  declare  and pay its  regular
quarterly  dividend  on the SBB  Common  Stock not to exceed  $0.18 per share at
approximately  the same  time  during  each  quarter  which it has  historically
declared and paid such dividend;  provided,  however, that SBB and Pacific shall
cooperate  with each other to  coordinate  the record and payment dates of their
respective  dividends  for the quarter in which the  Effective  Date occurs such
that the holders of Pacific Common Stock shall receive a quarterly dividend from
either Pacific or SBB, but not from both with respect to such quarter.

         SECTION  6.20  Conduct of Business in the  Ordinary  Course.  Except as
specifically  provided for in this Agreement,  SBB shall conduct its business in
the ordinary course as heretofore conducted.  For purposes of this Section 6.20,
the  ordinary  course of  business  shall  consist of the  banking  and  related
business as presently conducted by SBB and the SBB Subsidiaries.

         SECTION 6.21 Additions to SBB Board of Directors.  SBB shall,  prior to
the Effective Date,  take all action  necessary to effect the Bylaw Amendment so
as to permit the number of directors of the Surviving Corporation  identified on
Schedule One to Exhibit "A" hereto to be designated.

         SECTION 6.22  Director  Voting.  SBB shall use its best efforts to have
each of its  directors  agree to vote,  or cause to be voted,  all shares of SBB
Common  Stock  beneficially  owned by them at the SBB  Shareholders'  Meeting in
favor of the Merger.  Subject to such  directors'  fiduciary  duties,  each such
director shall execute such  documents as are  reasonably  necessary to evidence
their  determination  to vote their  shares of SBB Common  Stock in favor of the
Merger at the SBB Shareholders' Meeting.

         SECTION 6.23 Pooling of Interests Accounting Treatment.  SBB shall, and
shall use its best  efforts  to cause its  directors  and  officers  to, use all
commercially  reasonable  efforts  not  inconsistent  with  the  terms  of  this
Agreement to structure and consummate the Merger and all actions related thereto
in a manner that will qualify the Merger for "pooling of  interests"  accounting
treatment  as  determined  by  SBB's  independent  accounting  firm  and  by any
securities  regulatory  body  which  shall  review the  Registration  Statement,
including without limitation, the S.E.C.

         SECTION  6.24  Disclosure  Schedules.  SBB  agrees  at or  prior to the
Closing to provide  Pacific with  supplemental  Schedules to be delivered by SBB
pursuant to this Agreement  reflecting any material  changes thereto between the
date of this Agreement and the Closing Date.






                                      A-66

<PAGE>



                                  ARTICLE VII.
               CONDITIONS PRECEDENT TO THE OBLIGATIONS OF PACIFIC

         All  obligations  of Pacific  under this  Agreement  are subject to the
fulfillment (or, if legally permissible,  waiver by Pacific), prior to or at the
Closing, of each of the following conditions:

         SECTION  7.01   Compliance   with   Representations,   Warranties   and
Agreements.

         (a) All representations and warranties made by SBB in this Agreement or
in any document or schedule delivered to Pacific pursuant hereto shall have been
true and  correct  in all  material  respects  when  made and  shall be true and
correct in all material  respects as of the Closing Date with the same force and
effect  as if such  representations  and  warranties  were made at and as of the
Closing  Date,  except  with  respect to those  representations  and  warranties
specifically made as of an earlier date (in which case such  representations and
warranties shall be true as of such earlier date).

         (b) SBB shall have performed or complied in all material  respects with
all agreements, terms, covenants and conditions required by this Agreement to be
performed or complied with by SBB prior to or at the Closing.

         SECTION 7.02 Shareholder Approvals. The holders of at least the minimum
required  percentage  of SBB Common Stock and Pacific  Common Stock  entitled to
vote on the Agreement,  the Merger  Agreement and the Merger shall have approved
the Agreement,  the Merger Agreement and the Merger, and the holders of at least
the minimum  required  percentage  of SBB Common  Stock  entitled to vote on the
Bylaw Amendment shall have approved the Bylaw Amendment.

         SECTION 7.03 Government and Other Approvals. SBB and Pacific shall have
received  approvals,  acquiescence  or  consents,  all on terms  and  conditions
mutually acceptable to SBB and Pacific, of the transactions contemplated by this
Agreement,  and the Merger Agreement,  from all necessary  governmental agencies
and  authorities  and other  third  parties,  including  but not  limited to the
S.E.C.,  and the Federal Reserve,  and all applicable waiting periods shall have
expired,  and SBB and Pacific  shall have received the approvals and consents of
all third parties required to consummate this Agreement and the other agreements
contemplated hereby, including, but not limited to, the Merger Agreement and the
transactions   contemplated   hereby  and  thereby.   Such   approvals  and  the
transactions  contemplated hereby shall not have been contested or threatened to
be  contested  by any Federal or state  governmental  authority  or by any other
third party  (except  shareholders  asserting  statutory  dissenters'  appraisal
rights) by formal proceedings.

         SECTION 7.04 No  Litigation.  No action  shall have been taken,  and no
statute,  rule,  regulation  or order  shall  have  been  promulgated,  enacted,
entered,  enforced or deemed  applicable to this Agreement,  the Merger,  or the
transactions  contemplated  hereby or thereby by any  Federal,  state or foreign
government  or  governmental  authority  or by any court,  domestic  or foreign,
including the entry of a preliminary or permanent  injunction,  that would:  (a)
make this Agreement or any other agreement contemplated hereby,  including,  but
not limited to, the Merger Agreement, or the transactions contemplated hereby or
thereby illegal, invalid  or  unenforceable, (b)  require the  divestitute  of a




                                      A-67

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material portion of the assets of SBB, (c) impose material limits in the ability
of any  party  to this  Agreement  to  consummate  the  Agreement  or any  other
agreement  contemplated  hereby,  including,  but not  limited  to,  the  Merger
Agreement,  or the transactions  contemplated  hereby or thereby,  (d) otherwise
result  in a  Material  Adverse  Change,  or (e) if the  Agreement  or any other
agreement  contemplated  hereby,  including,  but not  limited  to,  the  Merger
Agreement,  or the transactions  contemplated hereby or thereby are consummated,
subject  Pacific or subject any officer,  director,  shareholder  or employee of
Pacific to criminal or civil liability. No action or proceeding before any court
or  governmental   authority,   domestic  or  foreign,   by  any  government  or
governmental  authority or by any other  person,  domestic or foreign,  shall be
threatened, instituted or pending that would reasonably be expected to result in
any of the consequences referred to in clauses (a) through (e) above.

         SECTION 7.05 Delivery of Closing Documents. Pacific shall have received
all  documents  required to be received from SBB on or prior to the Closing Date
as set  forth in  Section  2.03  hereof,  all in form and  substance  reasonably
satisfactory to Pacific.

         SECTION  7.06  Receipt of Fairness  Opinion.  The Board of Directors of
Pacific shall have  received,  on or before the date of the mailing of the Joint
Proxy  Statement/Prospectus,  from its investment advisor, Van Kasper & Company,
an  unqualified  written  opinion to the  effect  that the Merger is fair to the
shareholders of Pacific from a financial point of view.

         SECTION 7.07 Receipt of Pooling  Opinions.  Pacific shall have received
an opinion  letter,  dated as of the Closing  Date,  from KPMG Peat Marwick LLP,
independent public accountants for Pacific, to the effect that Pacific qualifies
as an  entity  that may be a party  to a  business  combination  for  which  the
"pooling of interests"  method of accounting would be available under Accounting
Principles Board Opinion No. 16 ("APB 16").  Pacific shall have also received an
opinion  letter,  dated as of the  Closing  Date,  from  Arthur  Andersen,  LLP,
independent  public  accountants  for SBB,  to the effect  that the Merger  will
qualify for "pooling of interests"  accounting  treatment under APB 16 if closed
and consummated in accordance with this Agreement. In addition, there shall have
been no  determination  by any  court,  tribunal,  regulatory  agency  or  other
governmental  entity, that the Merger fails or will fail to qualify for "pooling
of interests" accounting treatment.

         SECTION  7.08  Registration  Statement.   The  Registration  Statement,
including any amendments or supplements  thereto,  shall be effective  under the
Securities  Act  and  no  stop  order   suspending  the   effectiveness  of  the
Registration  Statement  shall be in effect or proceedings  for purpose  pending
before or threatened  by the S.E.C.  All state  securities  permits or approvals
required by applicable  state  securities  laws to consummate  the  transactions
contemplated by this Agreement and the Merger Agreement shall have been received
and remain in effect.

         SECTION 7.09 Federal Tax Opinion. Pacific shall have received a copy of
the opinion of Jenkens & Gilchrist,  P.C., counsel to SBB, to the effect that if
the  Merger  is  consummated  in  accordance  with the  terms  set forth in this
Agreement (i) the Merger will constitute a reorganization  within the meaning of
Section 368(a) of the Code,  (ii) no gain or loss will be recognized for federal
income tax purposes  by the  holders  of shares  of  Pacific Common  Stock  upon




                                      A-68

<PAGE>



receipt  of the  Merger  Consideration  (except  for  cash  received  in lieu of
fractional  shares),  (iii) the basis of shares of SBB Common Stock  received by
the  shareholders  of Pacific will be the same as the basis of shares of Pacific
Common Stock  exchanged  therefor,  and (iv) the holding period of the shares of
SBB Common Stock received by such  shareholders  will include the holding period
of the shares of Pacific Common Stock exchanged  therefor,  provided such shares
were held as capital assets as of the Effective Date. In rendering such opinion,
such counsel may require and rely upon  representations  and covenants including
those contained in certificates of officers of SBB, Pacific and others.

         SECTION  7.10  Dissenting  Shareholders.  Holders  of not  more  than a
certain  percentage (not to exceed 9.9%) of the issued and outstanding shares of
Pacific Common Stock shall have demanded or be entitled to demand payment of the
fair  value  of  their  shares  as  dissenting   shareholders  under  applicable
provisions  of the GCL such that their  receipt of cash pursuant to the exercise
of their  appraisal  rights,  when  combined  with all other  cash  transactions
required to be considered  under GAAP, would result in the Merger not qualifying
for "pooling of interests" accounting treatment under GAAP.

         SECTION 7.11  Accounting  Treatment.  All accounting and tax treatment,
entries and adjustments in connection with the transactions contemplated by this
Agreement  and the other  agreements  contemplated  hereby  shall be  reasonably
satisfactory to Pacific,  Pacific shall not have received  notification from any
proper regulatory authority that Pacific's accounting and tax treatment, entries
and  adjustments  used in connection  with the Merger are improper,  and Pacific
shall  not have  been  required  by any such  regulatory  authority  to make any
accounting or tax adjustments that would constitute a Material Adverse Change.

         SECTION  7.12  Bylaw  Amendment.  SBB  shall  have  taken  all  actions
necessary to effect the Bylaw Amendment.

         SECTION  7.13 No  Material  Adverse  Change.  There  shall have been no
Material Adverse Change with respect to SBB since December 31, 1997.


                                  ARTICLE VIII.
                 CONDITIONS PRECEDENT TO THE OBLIGATIONS OF SBB

         All  obligations  of  SBB  under  this  Agreement  are  subject  to the
fulfillment  (or,  if legally  permissible,  waiver by SBB),  prior to or at the
Closing, of each of the following conditions:

         SECTION  8.01   Compliance   with   Representations,   Warranties   and
Agreements.

         (a)  All  representations  and  warranties  made  by  Pacific  in  this
Agreement or in any document or schedule  delivered to SBB pursuant hereto shall
have been true and correct in all material  respects when made and shall be true
and correct in all material  respects as of the Closing Date with the same force
and effect as if such  representations and warranties were made at and as of the
Closing  Date,  except  with  respect to those  representations  and  warranties
specifically made as of an earlier date  (in which case such representations and
warranties shall be true as of such earlier date).



                                      A-69

<PAGE>





         (b) Pacific shall have  performed or complied in all material  respects
with all agreements,  terms, covenants and conditions required by this Agreement
to be performed or complied with by Pacific prior to or at the Closing.

         SECTION 8.02 Shareholder Approvals. The holders of at least the minimum
required  percentage  of Pacific  Common Stock and SBB Common Stock  entitled to
vote on the Agreement,  the Merger  Agreement and the Merger shall have approved
the Agreement,  the Merger Agreement and the Merger; and the holding of at least
the  minimum  percentage  of SBB  Common  Stock  entitled  to vote on the  Bylaw
Amendment shall have approved the Bylaw Amendment.

         SECTION 8.03 Government and Other Approvals. SBB and Pacific shall have
received  approvals,  acquiescence  or  consents,  all on terms  and  conditions
mutually acceptable to SBB and Pacific, of the transactions contemplated by this
Agreement and the Merger Agreement, from all necessary governmental agencies and
authorities and other third parties, including but not limited to the S.E.C. and
the Federal Reserve,  and all applicable waiting periods shall have expired, and
SBB and Pacific  shall have  received  the  approvals  and consents of all third
parties   required  to  consummate  this  Agreement  and  the  other  agreements
contemplated hereby, including, but not limited to, the Merger Agreement and the
transactions   contemplated   hereby  and  thereby.   Such   approvals  and  the
transactions  contemplated hereby shall not have been contested or threatened to
be  contested  by any Federal or state  governmental  authority  or by any other
third party  (except  shareholders  asserting  statutory  dissenters'  appraisal
rights) by formal proceedings. It is understood that, if such contest is brought
by formal proceedings, SBB may, but shall not be obligated to, answer and defend
such contest or otherwise pursue this transaction over such objection.

         SECTION 8.04 No  Litigation.  No action  shall have been taken,  and no
statute,  rule,  regulation  or order  shall  have  been  promulgated,  enacted,
entered,  enforced or deemed  applicable to this Agreement,  the Merger,  or the
transactions  contemplated  hereby or thereby by any  Federal,  state or foreign
government  or  governmental  authority  or by any court,  domestic  or foreign,
including the entry of a  preliminary  or permanent  injunction,  that would (a)
make this Agreement or any other agreement contemplated hereby,  including,  but
not limited to, the Merger Agreement, or the transactions contemplated hereby or
thereby  illegal,  invalid or  unenforceable,  (b) require the  divestiture of a
material  portion of the assets of Pacific,  (c) impose  material  limits in the
ability of any party to this  Agreement to consummate the Agreement or any other
agreement  contemplated  hereby,  including,  but not  limited  to,  the  Merger
Agreement,  or the transactions  contemplated  hereby or thereby,  (d) otherwise
result  in a  Material  Adverse  Change,  or (e) if the  Agreement  or any other
agreement  contemplated  hereby,  including,  but not  limited  to,  the  Merger
Agreement,  or the transactions  contemplated hereby or thereby are consummated,
subject SBB or subject any officer, director,  shareholder or employee of SBB to
criminal  or civil  liability.  No  action  or  proceeding  before  any court or
governmental  authority,  domestic or foreign, by any government or governmental
authority or by  any other person,  domestic or foreign,  shall  be  threatened,




                                      A-70

<PAGE>



instituted or pending that would  reasonably be expected to result in any of the
consequences referred to in clauses (a) through (e) above.

         SECTION 8.05 Delivery of Closing Documents. SBB shall have received all
documents  required to be received  from Pacific on or prior to the Closing Date
as set  forth in  Section  2.02  hereof,  all in form and  substance  reasonably
satisfactory to SBB.

         SECTION 8.06 Receipt of  Shareholder  Letters.  SBB shall have received
from Pacific, at least 31 days prior to the Closing Date, the signed Shareholder
Letters,  in the form attached hereto as Exhibit "F" hereof,  of each person who
may  reasonably be deemed an  "affiliate"  of Pacific within the meaning of such
term as used in Rule 145 under the Securities Act.

         SECTION 8.07 Receipt of Fairness Opinion. The Board of Directors of SBB
shall have  received,  on or before the date of the  mailing of the Joint  Proxy
Statement/Prospectus,  from its  investment  advisor,  The Bank Advisory  Group,
Inc., an  unqualified  written  opinion to the effect that the Merger is fair to
the shareholders of SBB from a financial point of view.

         SECTION  8.08  Dissenting  Shareholders.  Holders  of not  more  than a
certain  percentage (not to exceed 9.9%) of the issued and outstanding shares of
Pacific Common Stock shall have demanded or be entitled to demand payment of the
fair  value  of  their  shares  as  dissenting   shareholders  under  applicable
provisions  of the GCL such that their  receipt of cash pursuant to the exercise
of their  appraisal  rights,  when  combined  with all other  cash  transactions
required to be considered  under GAAP, would result in the Merger not qualifying
for "pooling of interests" accounting treatment under GAAP.

         SECTION 8.09 Receipt of Pooling  Opinions.  SBB shall have  received an
opinion  letter,  dated as of the  Closing  Date,  from KPMG Peat  Marwick  LLP,
independent public accountants for Pacific, to the effect that Pacific qualifies
as an  entity  that may be a party  to a  business  combination  for  which  the
"pooling of interests" method of accounting would be available under APB 16. SBB
shall have also received an opinion  letter,  dated as of the Closing Date, from
Arthur Andersen, LLP, its independent public accountants, to the effect that the
Merger will qualify for "pooling of interests" accounting treatment under APB 16
if closed and consummated in accordance with this Agreement. In addition,  there
shall have been no determination by any court,  tribunal,  regulatory  agency or
other  governmental  entity,  that the Merger  fails or will fail to qualify for
"pooling of interests" accounting treatment.

         SECTION  8.10  Registration  Statement.   The  Registration  Statement,
including any amendments or supplements  thereto,  shall be effective  under the
Securities  Act  and  no  stop  order   suspending  the   effectiveness  of  the
Registration  Statement  shall be in effect or proceedings  for purpose  pending
before or threatened  by the S.E.C.  All state  securities  permits or approvals
required by applicable  state  securities  laws to consummate  the  transactions
contemplated by this Agreement and the Merger Agreement shall have been received
and remain in effect.

         SECTION 8.11  Federal Tax Opinion.  SBB shall have  received an opinion
of its counsel,  Jenkens & Gilchrist,  P.C., to the effect that if the Merger is
consummated in accordance  with the terms  set forth in  this Agreement (i)  the


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<PAGE>



Merger will constitute a reorganization  within the meaning of Section 368(a) of
the  Code,  (ii) no gain or loss  will be  recognized  for  federal  income  tax
purposes by the holders of shares of Pacific  Common  Stock upon  receipt of the
Merger  Consideration  (except for cash received in lieu of fractional  shares),
(iii) the basis of shares of SBB Common Stock  received by the  shareholders  of
Pacific  will be the  same as the  basis  of  shares  of  Pacific  Common  Stock
exchanged  therefor,  and (iv) the  holding  period of the  shares of SBB Common
Stock  received by such  shareholders  will  include  the holding  period of the
shares of Pacific  Common Stock  exchanged  therefor,  provided such shares were
held as capital assets as of the Effective Date. In rendering such opinion, such
counsel may require and rely upon  representations and covenants including those
contained in certificates of officers of SBB, Pacific and others.

         SECTION 8.12  Accounting  Treatment.  All accounting and tax treatment,
entries and adjustments in connection with the transactions contemplated by this
Agreement  and the other  agreements  contemplated  hereby  shall be  reasonably
satisfactory  to SBB, SBB shall not have received  notification  from any proper
regulatory  authority  that SBB's  accounting  and tax  treatment,  entries  and
adjustments  used in connection with the Merger are improper,  and SBB shall not
have been required by any such  regulatory  authority to make any  accounting or
tax adjustments that would constitute a Material Adverse Change.

         SECTION  8.13 No  Material  Adverse  Change.  There  shall have been no
Material Adverse Change with respect to Pacific since December 31, 1997.


                                   ARTICLE IX.
                      EXPENSES, TERMINATION AND ABANDONMENT

         SECTION  9.01  Expenses.  Each of the  parties  hereto  shall  bear its
respective  costs and expenses  incurred in connection with the  consummation of
the transactions contemplated by this Agreement; provided, however, in the event
that:

                  (a) this Agreement is terminated by SBB because (i) the Merger
         Agreement is not approved by the required vote of  shareholders  at the
         Pacific  Shareholders'  Meeting,  and (ii) the  Board of  Directors  of
         Pacific  (subject to compliance with its fiduciary duties as advised by
         counsel)  shall  have  failed to have used its best  efforts  to obtain
         shareholder approval, Pacific shall pay to SBB within ten (10) business
         days after such  termination (y) a termination  fee of $7,650,000,  and
         (z) all  documented  fees and expenses of SBB related to this Agreement
         and the transactions  contemplated hereby (which fees and expenses,  as
         communicated  to  Pacific by SBB within  five (5)  business  days after
         termination, shall not exceed $250,000); and

                  (b) this  Agreement is terminated  by Pacific  because (i) the
         Merger  Agreement is not approved by the required vote of  shareholders
         at the SBB  Shareholders'  Meeting,  and (ii) the Board of Directors of
         SBB  (subject to  compliance  with its  fiduciary  duties as advised by
         counsel)  shall  have  failed to have used its best  efforts  to obtain
         shareholder approval, SBB shall pay to Pacific within ten (10) business




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<PAGE>



         days after such termination (y) a termination  fee of  $7,650,000,  and
         (z) all documented fees and expenses  of Pacific related to this Agree-
         ment and the transactions contemplated hereby (which fees and expenses,
         as communicated to SBB  by  Pacific  within  five  (5)  business  after
         termination, shall not exceed $250,000); and

                  (c) this Agreement is terminated by Pacific because of a Third
         Party Transaction (as defined in Section 9.02, Pacific shall pay to SBB
         within ten (10) business days after such  termination (y) a termination
         fee of  $7,650,000,  and (z) all  documented  fees and  expenses of SBB
         related to this  Agreement  and the  transactions  contemplated  hereby
         (which fees and  expenses,  as  communication  to Pacific by SBB within
         five (5) business days after termination, shall not exceed $250,000).

The parties hereto  acknowledge  that the  agreements  contained in this Section
9.01 are an integral part of the  transactions  contemplated  in this Agreement,
and that,  without these  agreements,  SBB and Pacific would not enter into this
Agreement.

         SECTION  9.02  Termination.  Subject to any  payments  as  provided  in
Section 9.01, this Agreement may be terminated, and the Merger may be abandoned,
at any time prior to the Effective Date:

                  (a) by mutual written  agreement  between SBB and Pacific,  if
         the  Board  of  Directors  of each  party  so  determines  by vote of a
         majority of the members of its entire Board;

                  (b) by either SBB or Pacific,  if the  Effective  Date has not
         occurred  by January  31,  1999,  or such later date as may be mutually
         agreed to by SBB and Pacific;

                  (c) by SBB, if there has been a  Material Adverse  Change with
         respect to Pacific;

                  (d) by Pacific,  if there has been a Material  Adverse  Change
         with respect to SBB.

                  (e) by either SBB or Pacific,  by written notice to the other,
         if the other has breached any of its  covenants in Article V or Article
         VI of this Agreement,  as the case may be, in any material  respect and
         has  failed to  correct  or cure any such  breach  within  twenty  (20)
         business days after notice thereof is given by the nonbreaching party;

                  (f) by either SBB or Pacific,  by written notice to the other,
         if any  representation or warranty given or made by such other party in
         this Agreement or in any schedule or other  document  delivered by such
         other  party in  accordance  with the  terms of this  Agreement,  is or
         becomes  untrue  or  incorrect  in  any  material  respect  and  is not
         corrected within twenty (20) business days after written notice thereof
         is given by the party terminating this Agreement to the party giving or



                                      A-73

<PAGE>



         making such representation or warranty,  provided  that any such notice
         shall be delivered promptly upon discovery of the breach;

                  (g) by either SBB or Pacific,  if (i) any of the  transactions
         contemplated by this Agreement or the Merger  Agreement are disapproved
         by any  regulatory  authority  whose approval is required to consummate
         such  transactions,  (ii) any court of  competent  jurisdiction  in the
         United  States or other United States  (federal or state)  governmental
         body  shall have  issued an order,  decree or ruling or taken any other
         action restraining,  enjoining,  invalidating or otherwise  prohibiting
         the Agreement or the transactions  contemplated  hereby and such order,
         decree, ruling or other action shall have been final and nonappealable,
         or (iii) either Pacific or SBB reasonably determines, in good faith and
         after consulting with counsel, there is substantial likelihood that any
         necessary  regulatory approval will not be obtained or will be obtained
         only upon a condition or conditions that make it inadvisable to proceed
         with the transactions contemplated by this Agreement;

                  (h) by SBB or Pacific, if the Merger Agreement is not approved
         by the required vote of shareholders of Pacific or SBB;

                  (i) by  Pacific,  by written  notice to SBB, if (i) a proposal
         for a Third Party  Transaction (as defined below) involving Pacific has
         been made or received and the Board of Directors of Pacific determines,
         in the exercise of its good faith judgment  (based on written advice of
         independent  legal counsel) that such  termination is required in order
         for Pacific's Board of Directors to comply with its fiduciary duties to
         Pacific's  shareholders,  or (ii)  following  receipt  by  Pacific of a
         proposal  for a Third  Party  Transaction,  the Board of  Directors  of
         Pacific  shall have altered its  determination  to  recommend  that the
         shareholders  of Pacific approve this Agreement or shall have failed to
         proceed to hold the special  Pacific  Shareholders'  Meeting to approve
         this  Agreement,  in either case of which Pacific shall give SBB prompt
         written notice of its election to terminate this Agreement  pursuant to
         this Section 9.02(i).

                  For  purposes  of  this  Section   9.02(i),   a  "Third  Party
         Transaction"  shall  include (i) any  successful  tender offer for more
         than 50% of the  outstanding  shares  of  Pacific,  (ii) any  merger or
         consolidation  of Pacific  with or into any entity other than SBB or an
         affiliate  of SBB,  (iii) any sale of all or  substantially  all of the
         assets  of  Pacific,  (iv)  any  reorganization  of  Pacific  or  other
         transaction   that  results  or  when  completed   would  result  in  a
         disposition of substantially  all of the assets of Pacific,  or (v) the
         issuance, sale or disposition of securities representing 50% or more of
         the common stock of Pacific;

                  (j) by SBB pursuant to the terms of Section 5.15(b) hereof;

                  (k) by  Pacific  pursuant  to  the  terms  of  Section 6.16(b)
         hereof;

                  (l) by Pacific,  if the average of the average closing bid and
         asked  price of a share of SBB Common  Stock as  reported on Nasdaq for
         the twenty (20)  business day period  immediately  preceding  the fifth
         (5th) business day prior to the  Closing Date (the "SBB Average Price")



                                      A-74

<PAGE>



         shall be less than $22.95 (which number shall be appropriately adjusted
         to give effect to any Share Adjustment relative to shares of SBB Common
         Stock); provided, however, that if the  SBB Average Price shall be less
         than $22.95, Pacific and SBB shall attempt in good faith to renegotiate
         the Exchange Ratio, subject to existing market conditions.  Should  the
         parties fail to  so renegotiate the  Exchange Ratio  within  three  (3)
         business days after determination of the SBB Average Price, Pacific may
         terminate this Agreement pursuant to this Section 9.02(l);

                  (m)  by  Pacific,  if  Pacific  shall  not  have  received  an
         unqualified  written opinion from its investment  advisor,  dated as of
         the mailing of the Proxy  Statement/Prospectus,  to the effect that the
         Merger is fair to the shareholders of Pacific from a financial point of
         view; or

                  (n) by SBB,  if SBB shall  not have  received  an  unqualified
         written opinion from its investment advisor, dated as of the mailing of
         the Proxy  Statement/Prospectus,  to the effect that the Merger is fair
         to the shareholders of SBB from a financial point of view.

         SECTION 9.03 Notice of Termination.  The power of termination  provided
for by Section 9.02 hereof may be  exercised  only by a notice given in writing,
as provided in Section 12.05 of this Agreement.

         SECTION 9.04 Effect of Termination.  Without  limiting any other relief
to which either party  hereto may be entitled for breach of this  Agreement,  in
the event of the termination  and abandonment of this Agreement  pursuant to the
provisions  of Section 9.02 hereof,  no party to this  Agreement  shall have any
further  liability or  obligation in respect of this  Agreement,  except for (a)
liability of a party pursuant to Section 9.01 hereof,  and (b) the provisions of
Article XI hereof shall remain applicable.


                                   ARTICLE X.
                  NONSURVIVAL OF REPRESENTATIONS AND WARRANTIES

         SECTION  10.01  Nonsurvival  of  Representations  and  Warranties.  The
parties hereto agree that all of their respective representations and warranties
contained in this Agreement shall not survive Closing.


                                   ARTICLE XI.
                            CONFIDENTIAL INFORMATION

         SECTION  11.01   Definition   of   "Recipient,"   "Disclosing   Party,"
"Representative"  and  "Person".  For  purposes  of this  Article  XI,  the term
"Recipient"  shall mean the party receiving the Subject  Information (as defined
in  Section  11.02)  and the  term  "Disclosing  Party"  shall  mean  the  party
furnishing the Subject Information. The terms "Recipient" or "Disclosing Party",
as used herein,  include:  (1) all persons and entities related to or affiliated
in any way with the Recipient  or the Disclosing Party,  as the case may be, and




                                      A-75

<PAGE>



(2) any person or entity controlling, controlled by or under common control with
the  Recipient  or  the  Disclosing   Party,  as  the  case  may  be.  The  term
"Representative"  as  used  herein,  shall  include  all  directors,   officers,
shareholders, employees,  representatives,  advisors, attorneys, accountants and
agents of any of the  foregoing.  The term  "person" as used in this  Article XI
shall be broadly interpreted to include,  without  limitation,  any corporation,
company, group, partnership, governmental agency or individual.

         SECTION 11.02 Definition of "Subject Information". For purposes of this
Article XI, the term "Subject  Information" shall mean all information furnished
to the  Recipient or its  Representatives  (whether  prepared by the  Disclosing
Party, its  Representatives  or otherwise and whether or not identified as being
nonpublic,  confidential or proprietary) by or on behalf of the Disclosing Party
or its  Representatives  relating to or involving  the  business,  operations or
affairs of the  Disclosing  Party or otherwise in possession  of the  Disclosing
Party. The term "Subject Information" shall not include information that (i) was
already in the  Recipient's  possession  at the time it was first  furnished  to
Recipient by or on behalf of Disclosing Party, provided that such information is
not known by the  Recipient to be subject to another  confidentiality  agreement
with or other obligation of secrecy to the Disclosing Party, its Subsidiaries or
another party, or (ii) becomes generally available to the public other than as a
result of a disclosure by the Recipient or its Representatives, or (iii) becomes
available to the Recipient on a non-confidential  basis from a source other than
the Disclosing Party, its Representative or otherwise, provided that such source
is not known by the Recipient to be bound by a confidentiality agreement with or
other  obligation of secrecy to the  Disclosing  Party,  its  Representative  or
another party.

         SECTION 11.03  Confidentiality.  Each Recipient  hereby agrees that the
Subject  Information  will be used  solely  for the  purpose  of  reviewing  and
evaluating  the  transactions  contemplated  by this  Agreement  and  the  other
agreements  contemplated  hereby,  including the Merger Agreement,  and that the
Subject  Information  will  be  kept  confidential  by  the  Recipient  and  the
Recipient's  Representatives;  provided,  however,  that (i) any of such Subject
Information may be disclosed to the Recipient's  Representatives (including, but
not limited to, the Recipient's accountants and attorneys) who need to know such
information for the purpose of evaluating any such possible  transaction between
the  Disclosing   Party  and  the  Recipient  (it  being  understood  that  such
Representatives shall be informed by the Recipient of the confidential nature of
such  information  and that the Recipient shall direct and cause such persons to
treat such information confidentially);  and (ii) any disclosure of such Subject
Information may be made to which the Disclosing  Party consents in writing prior
to any such disclosure by Recipient.

         SECTION  11.04   Securities  Law  Concerns.   Each   Recipient   hereby
acknowledges  that the  Recipient is aware,  and the  Recipient  will advise the
Recipient's  Representatives  who are  informed as to the  matters  that are the
subject of this Agreement,  that the United States  securities laws prohibit any
person  who has  received  material,  non-public  information  from an issuer of
securities  from  purchasing  or  selling  securities  of  such  issuer  or from
communicating such information to any other person under  circumstances in which
it is reasonably foreseeable that such person is likely to purchase or sell such
securities.





                                      A-76

<PAGE>



         SECTION  11.05  Return  of  Subject   Information.   In  the  event  of
termination  of this  Agreement  or the Merger  Agreement,  for any reason,  the
Recipient shall promptly return to the Disclosing Party all material  containing
or reflecting any of the Subject Information other than information contained in
any application, notice or other document filed with any governmental agency and
not returned to the Recipient by such  governmental  agency.  In making any such
filing,  the  Recipient  will  request  confidential  treatment  of such Subject
Information included in any application, notice or other document filed with any
governmental agency.

         SECTION 11.06 Specific  Performance/Injunctive  Relief.  Each Recipient
acknowledges  that the Subject  Information  constitutes  valuable,  special and
unique  property of the  Disclosing  Party critical to its business and that any
breach of  Article  XI of this  Agreement  by it will  give rise to  irreparable
injury to the Disclosing Party that is not compensable in damages.  Accordingly,
each  Recipient  agrees  that the  Disclosing  Party shall be entitled to obtain
specific  performance  and/or injunctive relief against the breach or threatened
breach of Article XI of this Agreement by the Recipient or its  Representatives.
Each Recipient further agrees to waive, and use its reasonable  efforts to cause
its Representatives to waive, any requirement for the securing or posting of any
bond in connection  with such  remedies.  Such remedies  shall not be deemed the
exclusive remedies for a breach of Article XI of this Agreement, but shall be in
addition to all other  remedies  available at law or in equity to the Disclosing
Party.


                                  ARTICLE XII.
                                  MISCELLANEOUS

         SECTION 12.01 Brokerage Fees and Commissions.

         (a) SBB  hereby  represents  to  Pacific  that,  except as set forth on
Schedule 12.01(a), no agent, representative or broker has represented SBB or any
or all of the shareholders in connection with the transactions described in this
Agreement.  Pacific  shall have no  responsibility  or  liability  for any fees,
expenses or commissions payable to any agent, representative or broker of SBB or
any  shareholder  of SBB, and SBB hereby  agrees to  indemnify  and hold Pacific
harmless for any amounts owed to any agent,  representative  or broker of SBB or
any shareholder of SBB.

         (b)  Pacific  hereby  represents  to SBB  that,  except as set forth on
Schedule 12.01(b), no agent, representative or broker has represented Pacific or
any or all of the shareholders in connection with the transactions  described in
this  Agreement.  SBB shall have no  responsibility  or liability  for any fees,
expenses  or  commissions  payable  to any  agent,  representative  or broker of
Pacific or any  shareholder  of Pacific,  and Pacific hereby agrees to indemnify
and hold SBB  harmless  for any  amounts  owed to any agent,  representative  or
broker of Pacific or any shareholder of Pacific.

         SECTION  12.02  Entire   Agreement.   This   Agreement  and  the  other
agreements,   documents,   schedules,  exhibits  and  instruments  executed  and
delivered  by the  parties  to each  other at the  Closing  constitute  the full
understanding of the parties, a complete  allocation of risks between them and a
complete and exclusive statement of the  terms and conditions of their agreement




                                      A-77

<PAGE>



relating  to  the  subject  matter  hereof  and  supersede  any  and  all  prior
agreements,  whether  written or oral,  that may exist  between the parties with
respect thereto. Except as otherwise specifically provided in this Agreement, no
conditions,  usage of trade, course of dealing or performance,  understanding or
agreement  purporting  to  modify,  vary,  explain  or  supplement  the terms or
conditions   of  this   Agreement   shall  be  binding   unless   hereafter   or
contemporaneously  herewith made in writing and signed by the party to be bound,
and no  modification  shall be effected by the  acknowledgment  or acceptance of
documents  containing  terms or  conditions  at variance  with or in addition to
those set forth in this Agreement.

         SECTION 12.03 Further Cooperation. The parties agree that they will, at
any time and from time to time after the Closing,  upon request by the other and
without further consideration, do, perform, execute, acknowledge and deliver all
such further acts,  deeds,  assignments,  assumptions,  transfers,  conveyances,
powers of attorney, certificates and assurances as may be reasonably required in
order to fully  consummate the  transactions  contemplated  hereby in accordance
with this  Agreement  or to carry out and  perform any  undertaking  made by the
parties hereunder.

         SECTION  12.04  Severability.  In the event that any  provision of this
Agreement  is held to be  illegal,  invalid or  unenforceable  under  present or
future laws, then (a) such provision shall be fully severable and this Agreement
shall be construed  and enforced as if such  illegal,  invalid or  unenforceable
provision were not a part hereof; (b) the remaining provisions of this Agreement
shall remain in full force and effect and shall not be affected by such illegal,
invalid or unenforceable provision or by its severance from this Agreement;  and
(c) there shall be added  automatically  as a part of this Agreement a provision
as similar in terms to such illegal,  invalid or unenforceable  provision as may
be possible and still be legal, valid and enforceable.

         SECTION 12.05 Notices. Any and all payments (other than payments at the
Closing),  notices, requests,  instructions and other communications required or
permitted  to be given under this  Agreement  after the date hereof by any party
hereto  to  any  other  party  may  be  delivered  personally  or by  nationally
recognized  overnight  courier service or sent by mail or (except in the case of
payments) by telex or facsimile  transmission,  at the  respective  addresses or
transmission  numbers set forth below and shall be effective  (a) in the case of
personal delivery,  telex or facsimile  transmission,  when received; (b) in the
case of mail, upon the earlier of actual receipt or five (5) business days after
deposit in the United States Postal Service, first class certified or registered
mail,  postage  prepaid,  return  receipt  requested;  and  (c) in the  case  of
nationally-recognized  overnight  courier  service,  one (1)  business day after
delivery to such courier service  together with all appropriate  fees or charges
and  instructions  for such  overnight  delivery.  The parties may change  their
respective  addresses and  transmission  numbers by written  notice to all other
parties,  sent as provided in this Section 12.05. All communications  must be in
writing and addressed as follows:

                  IF TO PACIFIC:

                           Pacific Capital Bancorp
                           307 Main Street




                                      A-78

<PAGE>



                           Salinas, California 93901
                           Telecopy: (408) 646-9748
                           Attention:  Mr. Clayton C. Larson,
                                       President and Chief Administrative
                                       Officer

                 WITH A COPY TO:

                           Mr. James E. Topinka
                           Preston Gates & Ellis LLP
                           One Maritime Plaza
                           Suite 2400
                           San Francisco, California 94111
                           Telecopy: (415) 788-8819

                  IF TO SBB:

                           Santa Barbara Bancorp
                           1021 Anacapa Street
                           Santa Barbara, California 93101-2036
                           Telecopy: (804) 564-6293
                           Attention:  Mr. David W. Spainhour,
                                          President and Chief Executive Officer

                  WITH A COPY TO:

                           Mr. Charles E. Greef
                           Mr. Peter G. Weinstock
                           Jenkens & Gilchrist,
                           a Professional Corporation
                           1445 Ross Avenue, Suite 3200
                           Dallas, Texas  75202-2799
                           Telecopy:  (214) 855-4300

         SECTION  12.06  GOVERNING  LAW.  THIS  AGREEMENT  SHALL BE CONSTRUED IN
ACCORDANCE  WITH AND GOVERNED BY THE LAWS OF THE STATE OF CALIFORNIA  (INCLUDING
THOSE LAWS RELATING TO CHOICE OF LAW) APPLYING TO CONTRACTS  ENTERED INTO AND TO
BE PERFORMED  WITHIN THE STATE OF CALIFORNIA,  WITHOUT REGARD FOR THE PROVISIONS
THEREOF REGARDING CHOICE OF LAW. VENUE FOR ANY CAUSE OF ACTION ARISING FROM THIS
AGREEMENT SHALL LIE IN SANTA BARBARA, CALIFORNIA.

         SECTION 12.07 Multiple Counterparts. For the convenience of the parties
hereto, this Agreement may be executed in multiple  counterparts,  each of which
shall be deemed an  original,  and all  counterparts  hereof so  executed by the
parties hereto, whether or not such counterpart shall bear the execution of each
of the parties hereto, shall be deemed to be, and shall be construed as, one and




                                      A-79

<PAGE>



the same Agreement. A telecopy or facsimile transmission of a signed counterpart
of this  Agreement  shall be  sufficient  to bind the  party  or  parties  whose
signature(s) appear thereon.

         SECTION 12.08  Certain Definitions.

                  A.  "Affiliate"  means,  with respect to any person or entity,
         any  person  or entity  that,  directly  or  indirectly,  controls,  is
         controlled by, or is under common  control with,  such person or entity
         in question. For the purposes of this definition, "control" (including,
         with correlative  meaning,  the terms "controlled by" and "under common
         control with") as used with respect to any person or entity, shall mean
         the possession, directly or indirectly, of the power to direct or cause
         the direction of the  management and policies of such person or entity,
         whether  through the  ownership of voting  securities or by contract or
         otherwise.

                  B. "Subsidiary"  means, when used with reference to an entity,
         any  corporation,  a majority of the outstanding  voting  securities of
         which  are  owned   directly  or  indirectly  by  such  entity  or  any
         partnership, joint venture or other enterprise in which any entity has,
         directly or indirectly, any equity interest.

                  C. "Material Adverse Change" means any material adverse change
         (excluding  the  occurrence of expenses in connection  with the Merger)
         since  December  31,  1997  in the  business,  results  of  operations,
         condition  (financial or otherwise),  assets,  properties,  liabilities
         (absolute,  accrued,  contingent or otherwise),  reserves of Pacific or
         SBB, as the case may be, and their respective  Subsidiaries  taken as a
         whole, and specifically includes,  without limitation,  with respect to
         Pacific,  any change that reduces the tangible  shareholders' equity of
         Pacific  below  $70,000,000,  or, with  respect to SBB, any change that
         reduces the tangible shareholders' equity of SBB below $118,000,000.

                  D.  "Environmental  Laws"  mean all  federal,  state and local
         laws,  regulations,  statutes,  ordinances,  codes,  rules,  decisions,
         orders or decrees  relating  or  pertaining  to the  public  health and
         safety or the environment,  or otherwise governing the generation, use,
         handling,  collection,  treatment, storage,  transportation,  recovery,
         recycling,  removal,  discharge  or  disposal of  Hazardous  Materials,
         including,  without limitation, the Solid Waste Disposal Act, 42 U.S.C.
         6901 et seq., as amended ("SWDA," also known as "RCRA" for a subsequent
         amending   act),   (b)  the   Comprehensive   Environmental   Response,
         Compensation  and Liability Act, 42 U.S.C.  ss.9601 et seq., as amended
         ("CERCLA"),  (c) the Clean  Water Act,  33 U.S.C.  ss.1251 et seq.,  as
         amended ("CWA"),  (d) the Clean Air Act, 42 U.S.C.  ss.7401 et seq., as
         amended  ("CAA"),  (e) the  Toxic  Substances  Control  Act,  15 U.S.C.
         ss.2601 et seq., as amended  ("TSCA"),  (f) the Emergency  Planning and
         Community  Right to Know Act,  15 U.S.C.  ss.2601  et seq.,  as amended
         ("EPCRKA"),  and (g) the Occupational  Safety and Health Act, 29 U.S.C.
         ss. 651 et seq., as amended.

                  E. "Hazardous  Material" means,  without  limitation,  (a) any
         "hazardous   wastes"  as  defined  under  RCRA,   (b)  any   "hazardous
         substances"  as  defined  under  CERCLA,  (c) any toxic  pollutants  as
         defined under CWA,  (d) any hazardous  air pollutants as  defined under




                                      A-80

<PAGE>



         CAA, (e) any  hazardous  chemicals  as  defined  under  TSCA,  (f)  any
         hazardous substances or extremely hazardous substances as defined under
         EPCRKA, (g) asbestos,  (h) polychlorinated  biphenyls,  (i) underground
         storage  tanks,  whether  empty,  filled or  partially  filled with any
         substance,  (j) any  substance the presence of which on the property in
         question is prohibited under any  Environmental  Law, and (k) any other
         substance which under any  Environmental  Law requires special handling
         or  notification  of or  reporting  to  any  federal,  state  or  local
         governmental  entity  in its  generation,  use,  handling,  collection,
         treatment, storage, re-cycling,  treatment,  transportation,  recovery,
         removal,   discharge  or  disposal.   Notwithstanding   the  foregoing,
         "Hazardous  Material"  shall not include  materials  employed in normal
         consumer  or  office  uses,  such  as  gasoline,  lubricants,  printing
         materials,  cleaners,  disinfectants,  pesticides,  building materials,
         fluorescent lights and ballasts, batteries and refrigerants, as long as
         such  materials  are used and  stored  only in  quantities  typical  of
         consumer and office uses.

         SECTION  12.09  Specific  Performance.   Each  of  the  parties  hereto
acknowledges  that the other parties would be irreparably  damaged and would not
have an  adequate  remedy at law for money  damages in the event that any of the
covenants  contained in this Agreement were not performed in accordance with its
terms  or  otherwise  were  materially  breached.  Each  of the  parties  hereto
therefore  agrees  that,  without the  necessity  of proving  actual  damages or
posting bond or other  security,  the other party shall be entitled to temporary
and/or  permanent   injunction  or  injunctions  to  prevent  breaches  of  such
performance  and to specific  enforcement  of such  covenants in addition to any
other remedy to which they may be entitled, at law or in equity.

         SECTION 12.10  Attorneys' Fees and Costs. In the event  attorneys' fees
or other costs are  incurred  to secure  performance  of any of the  obligations
herein  provided  for, or to  establish  damages for the breach  thereof,  or to
obtain any other appropriate  relief,  whether by way of prosecution or defense,
the prevailing party shall be entitled to recover reasonable attorneys' fees and
costs incurred therein.

         SECTION 12.11 Rules of Construction.  Each use herein of the masculine,
neuter or feminine gender shall be deemed to include the other genders. Each use
herein of the plural shall include the singular and vice versa,  in each case as
the context requires or as it is otherwise appropriate. The word "or" is used in
the inclusive sense.  All articles and sections  referred to herein are articles
and  sections,  respectively,  of this  Agreement and all exhibits and schedules
referred to herein are exhibits and  schedules,  respectively,  attached to this
Agreement.  Descriptive  headings as to the contents of particular  sections are
for convenience  only and shall not control or affect the meaning,  construction
or  interpretation  of any provision of this  Agreement.  Any and all schedules,
exhibits,  annexes,  statements,  reports,  certificates  or other  documents or
instruments  referred to herein or attached hereto are and shall be incorporated
herein by reference hereto as though fully set forth herein verbatim.

         SECTION 12.12 Binding Effect;  Assignment. All of the terms, covenants,
representations,  warranties and  conditions of this Agreement  shall be binding
upon, and inure to the benefit of and be enforceable  by, the parties hereto and
their respective  successors,  representatives  and permitted  assigns.  Nothing
expressed or referred  to herein is  intended or shall  be construed to give any




                                      A-81

<PAGE>



person  other than the parties  hereto any legal or equitable  right,  remedy or
claim under or in respect of this Agreement,  or any provision herein contained,
it being the intention of the parties hereto that this Agreement, the assumption
of  obligations  and  statements of  responsibilities  hereunder,  and all other
conditions and provisions hereof are for the sole benefit of the parties to this
Agreement  and for the  benefit of no other  person.  Nothing in this  Agreement
shall act to relieve or discharge the obligation or liability of any third party
to any party to this Agreement, nor shall any provision give any third party any
right of subrogation or action over or against any party to this  Agreement.  No
party to this  Agreement  shall  assign this  Agreement,  by operation of law or
otherwise,  in whole or in part,  without the prior written consent of the other
parties.  Any  assignment  made or attempted in violation of this Section  12.12
shall be void and of no effect.

         SECTION  12.13  Public  Disclosure.  Neither SBB nor Pacific will make,
issue or release any announcement,  statement, press release,  acknowledgment or
other public disclosure of the existence of, or reveal the terms,  conditions or
the status of, this Agreement or the  transactions  contemplated  hereby without
the prior  written  consent of the other  parties to this  Agreement;  provided,
however,  that notwithstanding the foregoing,  SBB and Pacific will be permitted
to make any public disclosures or governmental filings as legal counsel may deem
necessary to maintain  compliance  with or to prevent  violations  of applicable
federal  or state  laws or  regulations  or which  may be  necessary  to  obtain
regulatory approval for the transactions contemplated hereby.

         SECTION 12.14 Extension; Waiver. At any time prior to the Closing Date,
the  parties  may  (i)  extend  the  time  for  the  performance  of  any of the
obligations  or  other  acts  of  the  other  parties  hereto,  (ii)  waive  any
inaccuracies in the  representations  and warranties  contained herein or in any
document,  certificate  or writing  delivered  pursuant  hereto,  or (iii) waive
compliance  with any of the  agreements or  conditions  contained  herein.  Such
action  shall  be  evidenced  by a signed  written  notice  given in the  manner
provided in Section 12.05 hereof.  No party to this  Agreement  shall by any act
(except by a written  instrument  given  pursuant  to Section  12.05  hereof) be
deemed to have waived any right or remedy hereunder or to have acquiesced in any
breach of any of the terms and conditions  hereof.  No failure to exercise,  nor
any delay in  exercising  any right,  power or privilege  hereunder by any party
hereto shall operate as a waiver thereof.  No single or partial  exercise of any
right, power or privilege hereunder shall preclude any other or further exercise
thereof or the exercise of any other right, power or privilege.  A waiver of any
party of any right or remedy on any one occasion shall not be construed as a bar
to any right or remedy  that  such  party  would  otherwise  have on any  future
occasion or to any right or remedy that any other party may have hereunder.




                                      A-82

<PAGE>




         SECTION 12.15  Amendments.  To the extent  permitted by applicable law,
this  Agreement  may be amended by action  taken by or on behalf of the Board of
Directors  of SBB and  Pacific  at any time  before  or after  adoption  of this
Agreement by the  shareholders  of SBB and Pacific but,  after any submission of
this Agreement to such  shareholders  for approval,  no amendment  shall be made
that (i) decreases the Merger  Consideration  to be paid for the Pacific  Common
Stock as set forth in Section 1.04 or (ii) materially and adversely  affects the
rights of the  shareholders  of either  SBB or  Pacific  hereunder  without  the
requisite approval of such shareholders. This Agreement may be amended, modified
or supplemented  only by an instrument in writing  executed by the party against
which enforcement of the amendment, modification or supplement is sought.

         SECTION 12.16  Access; Due Diligence.

         (a) Subject to the  confidentiality  provisions of Article XI,  Pacific
shall,  for a period of forty-five (45) calendar days following the date of this
Agreement, afford the officers, directors,  employees,  attorneys,  accountants,
investment  bankers  and  authorized  representatives  of SBB full access to the
properties,  books,  contracts  and  records of Pacific in order to conduct  due
diligence  of Pacific to assess  the  condition  and  results of  operations  of
Pacific.

         (b) Subject to the confidentiality provisions of Article XI, SBB shall,
for a  period  of  forty-five  (45)  calendar  days  following  the date of this
Agreement, afford the officers, directors,  employees,  attorneys,  accountants,
investment bankers and authorized  representatives of Pacific full access to the
properties,  books,  contracts  and  records  of SBB in  order  to  conduct  due
diligence of SBB to assess the condition and results of operations of SBB.




                               [Signatures Follow]




                                      A-83

<PAGE>



         IN WITNESS  WHEREOF,  SBB and Pacific have caused this  Agreement to be
executed by their duly authorized officers as of the date first above written.


                                  SANTA BARBARA BANCORP


                                  By:  /s/ William S. Thomas, Jr.
                                      ------------------------------------------
                                      William S. Thomas, Jr., Vice Chairman and
                                      Chief Operating Officer

                             and


                                  By:  /s/ Kent M. Vining
                                      ------------------------------------------
                                      Kent M. Vining, Senior Vice President


                                  PACIFIC CAPITAL BANCORP


                                  By:  /s/ D. Vernon Horton
                                      ------------------------------------------
                                      D. Vernon Horton, Chairman of the Board
                                      and Chief Executive Officer


                             and


                                  By:  /s/ Clayton C. Larson
                                      ------------------------------------------
                                      Clayton C. Larson, President and
                                      Chief Administrative Officer




                                      A-84

<PAGE>



                                                                      APPENDIX B
                                                                      ----------



                          AGREEMENT AND PLAN OF MERGER


         THIS  AGREEMENT AND PLAN OF MERGER (this "Merger  Agreement"),  is made
and entered into as of the 29th day of July,  1998, by and between Santa Barbara
Bancorp, a California  corporation and registered bank holding company under the
Bank Holding  Company Act of 1956,  as amended  (the "BHCA") with its  principal
offices at 1021 Anacapa  Street,  Santa  Barbara,  California  93101 ("SBB") and
Pacific Capital  Bancorp,  a California  corporation and registered bank holding
company  under the BHCA with its  principal  offices at 307 South  Main  Street,
Salinas, California ("Pacific").

                              W I T N E S S E T H:

         WHEREAS, Pacific is a California  corporation duly organized and exist-
ing under the laws of the State of California; and

         WHEREAS, SBB is  a California corporation  duly organized  and existing
under the laws of the State of California; and

         WHEREAS, SBB and Pacific desire to combine their respective businesses;
and

         WHEREAS,   in  furtherance  of  the  combination  of  their  respective
businesses,  SBB and Pacific  desire that Pacific  shall be merged with and into
SBB,  under the articles of  incorporation  of SBB and with the  resulting  name
"Pacific  Capital  Bancorp"  (SBB as it will exist from and after the  Effective
Date (defined herein) being referred to herein as the "Surviving  Corporation"),
and that (i) all of the issued and outstanding shares of common stock of Pacific
(other than shares held by dissenting  shareholders,  fractional share interests
and as otherwise  set forth  herein)  shall be converted  into and exchanged for
shares  of  common  stock of the  Surviving  Corporation,  (ii) all  outstanding
options to acquire  common stock of Pacific  shall be converted  into options to
acquire common stock of the Surviving  Corporation,  and (iii) all of the issued
and  outstanding  shares of capital stock of SBB shall continue to be issued and
outstanding shares of capital stock of the Surviving  Corporation,  all pursuant
this Merger Agreement; and

         WHEREAS,  pursuant to the authority given by and in accordance with the
provisions of the California  General  Corporate Law, as amended (the "GCL"),  a
majority of the members of the respective Boards of Directors of SBB and Pacific
have approved this Merger  Agreement and the proposed  transactions on the terms
and conditions set forth in this Merger  Agreement and the schedules  hereto and
have authorized the execution hereof; and





                                       B-1

<PAGE>



         WHEREAS,  SBB and Pacific desire to set forth certain  representations,
warranties  and  covenants  made by each to the  other as an  inducement  to the
execution  and  delivery of this  Agreement  and certain  additional  agreements
related to the transactions contemplated hereby.

         NOW, THEREFORE, for and in consideration of the foregoing premises, and
subject to the following  terms and  conditions,  the parties hereto  undertake,
promise, covenant and agree with each other as follows:

          1.  Merger of Pacific and SBB.  On the  Effective  Date (as defined in
Section  15),  Pacific  shall  be  merged  with and  into  SBB  pursuant  to the
provisions of Section 1107 of the GCL (the "Merger"). SBB shall be the surviving
corporation in the Merger (the "Surviving  Corporation")  and shall continue its
corporate existence under the laws of the State of California. Upon consummation
of the Merger, the separate corporate existence of Pacific shall terminate.

         2.  Effects of the  Merger.  The Merger  shall have the  effects as set
forth in Section 1107 of the GCL. The Surviving  Corporation  shall be deemed to
be the  successor  to each of SBB  and  Pacific;  shall  be  subject  to all the
liabilities,  obligations, duties and relations of each merging corporation; and
shall without the necessity of any  conveyance,  assignment or transfer,  become
the owner of all of the assets of every kind and character formerly belonging to
SBB and Pacific.  Except as provided in Section 3 herein,  on the Effective Date
the  Articles  of  Incorporation  and  Bylaws  of SBB shall be the  Articles  of
Incorporation  and Bylaws of the Surviving  Corporation  until the same shall be
amended in accordance with applicable law.

         3. Amendment to Articles of Incorporation of Surviving Corporation.  On
the  Effective  Date,  Article  One  to the  Articles  of  Incorporation  of the
Surviving  Corporation  as  specified  in  Section 2 hereof  shall be amended to
provide that the name of the  Surviving  Corporation  shall be "Pacific  Capital
Bancorp".

         4. Directors and Officers.  The directors and officers of the Surviving
Corporation  at the Effective Date shall be as set forth on Schedule One to this
Agreement  and each of such persons  shall hold office from the  Effective  Date
until their respective successors are duly elected or appointed and qualified in
the manner provided in the Articles of Incorporation and Bylaws of the Surviving
Corporation or as otherwise provided by law.

         5. Conversion of the Pacific Common Stock.

         (a) On the  Effective  Date,  by virtue of the Merger and  without  any
action on the part of the  holders  of the  following-described  security,  each
share of the common  stock,  no par value per share,  of Pacific  (the  "Pacific
Common Stock") issued and  outstanding  immediately  prior to the Effective Date
(other than shares of Pacific  Common Stock (i) as to which  dissenters'  rights
have been  perfected,  or (ii) held  directly  or  indirectly  by Pacific or SBB
(except for Trust Account Shares or DPC Shares as defined in Section 5(d)) shall
be converted  into the right to receive 1.935 shares (the  "Exchange  Ratio") of
the  fully-paid,  nonassessable  and registered  common stock,  no par value per
share,  of SBB (the "SBB Common Stock")  (together with any cash payment in lieu
of fractional shares, as provided below, the "Merger Consideration").




                                       B-2

<PAGE>



         (b) No  fractional  shares of SBB Common  Stock shall be issued and, in
lieu thereof,  holders of shares of Pacific Common Stock who would  otherwise be
entitled to a fractional share interest (after taking into account all shares of
Pacific  Common Stock held by such holder) shall be paid an amount in cash equal
to the product of such fractional  share interest and the average of the closing
bid and asked price of a share of SBB Common Stock on the Nasdaq National Market
on the business day immediately preceding the Effective Date.

         (c) All of the shares of Pacific Common Stock converted into SBB Common
Stock  pursuant  to this  Section  5 shall no longer  be  outstanding  and shall
automatically  be  canceled  and  retired  and  shall  cease  to exist as of the
Effective  Date,  and  each  certificate   (each  a  "Certificate")   previously
representing any such shares of Pacific Common Stock shall thereafter  represent
the right to receive (i) a certificate  representing  the number of whole shares
of SBB Common  Stock and (ii) cash in lieu of  fractional  shares into which the
shares  of  Pacific  Common  Stock  represented  by such  Certificate  have been
converted  pursuant  to this  Section 5.  Certificates  previously  representing
shares of Pacific Common Stock shall be exchanged for certificates  representing
whole shares of SBB Common Stock and cash in lieu of fractional shares issued in
consideration  therefor upon the surrender of such  Certificates to the Exchange
Agent, without any interest thereon. Such certificates representing whole shares
of SBB Common Stock exchanged for certificates previously representing shares of
Pacific Common Stock shall bear the name of the Surviving Corporation.

         (d) On the Effective  Date, all shares of Pacific Common Stock that are
owned,  directly  or  indirectly,  by Pacific or SBB or any of their  respective
subsidiaries  (other than (i) shares of Pacific  Common Stock held,  directly or
indirectly,  in trust accounts,  managed accounts and the like or otherwise held
in a fiduciary  capacity that are beneficially  owned by third parties (any such
shares,  and shares of Pacific  Common Stock which are similarly  held,  whether
held  directly  or  indirectly  by  Pacific  or SBB,  as the case may be,  being
referred to herein as "Trust Account  Shares") and (ii) shares of Pacific Common
Stock held by Pacific or any of its subsidiaries in respect of a debt previously
contracted  (any such shares being referred to herein as "DPC Shares")) shall be
canceled  and shall  cease to exist  and no stock of SBB or other  consideration
shall be delivered in exchange therefor. All shares of SBB Common Stock that are
owned by Pacific or any of its subsidiaries (other than Trust Account Shares and
DPC Shares with respect to SBB Common Stock) shall be retired.

         (e) If, between the date hereof and the Effective Date, the outstanding
shares of SBB Common Stock or Pacific  Common  Stock shall have been  increased,
decreased, changed into or exchanged for a different number or kind of shares or
securities as a result of a reorganization, recapitalization,  reclassification,
stock  dividend,  stock split,  reverse stock split,  or other similar change in
capitalization (a "Share  Adjustment"),  then the number of shares of SBB Common
Stock into which a share of Pacific Common Stock shall be converted  pursuant to
subsection (a) above shall be appropriately and proportionately adjusted so that
each  shareholder  of Pacific shall be entitled to receive such number of shares
of SBB Common Stock as such  shareholder  would have  received  pursuant to such
Share  Adjustment  had the record date therefor been  immediately  following the
Effective Date.





                                       B-3

<PAGE>



         (f) If any of the  shares  of  Pacific  Common  Stock  are  "dissenting
shares" as defined  under  applicable  provisions  of Chapter 13 of the GCL, any
Certificate representing such shares shall not be converted as described in this
Section 5, but from and after the Effective Date shall  represent only the right
to receive  such value as may be  determined  pursuant to Chapter 13 of the GCL;
provided,  however,  that each  dissenting  share of Pacific  Common Stock which
shall cease to be a dissenting share shall have only such rights as are provided
under the GCL.

         6. SBB Common Stock. On and after the Effective Date, each share of SBB
Common Stock issued and outstanding  immediately prior to the Closing Date shall
remain  an  issued  and  outstanding  share of  common  stock  of the  Surviving
Corporation  and shall not be affected by the Merger.  References  to SBB Common
Stock in this  Merger  Agreement  as of and after the  Effective  Date  shall be
deemed to mean the common stock of the Surviving Corporation.

         7.       Stock Options.

         (a) On the Effective Date, each non-statutory option to purchase shares
of Pacific  Common Stock granted  pursuant to a stock option plan  maintained by
Pacific and which is outstanding and unexercised immediately prior thereto shall
cease to represent a right to acquire  shares of Pacific  Common Stock and shall
be assumed by the  Surviving  Corporation  and converted  automatically  into an
option to  purchase  shares of SBB Common  Stock in an amount and at an exercise
price  determined as provided below (and  otherwise  subject to the terms of the
stock option plans of Pacific and the agreements evidencing grants thereunder):

                  (i) The number of shares of SBB Common  Stock to be subject to
         the  converted  option  shall be equal to the  product of the number of
         shares of Pacific  Common Stock subject to the original  option and the
         Exchange Ratio (provided that such number of shares shall be rounded to
         the nearest one one-hundredth of a share); and

                  (ii) The  exercise  price per share of SBB Common  Stock under
         the converted  option shall be equal to the exercise price per share of
         Pacific Common Stock under the original  option divided by the Exchange
         Ratio  (provided  that such  exercise  price  shall be  rounded  to the
         nearest one one-hundredth of a dollar).

         (b) On the Effective  Date,  each option to purchase  shares of Pacific
Common Stock granted  pursuant to a stock option plan  maintained by Pacific and
which is an "incentive  stock option" (as defined in Section 422 of the Internal
Revenue Code of 1986,  as amended (the  "Code"))  and which is  outstanding  and
unexercised  immediately  prior  thereto  shall  cease to  represent  a right to
acquire  shares of Pacific  Common  Stock and shall be assumed by the  Surviving
Corporation and converted automatically into an option to purchase shares of SBB
Common Stock in an amount and at an exercise price  determined in a manner which
is consistent  with Section  424(a) of the Code. The duration and other terms of
the converted option shall be the same as the original  option,  except that all
references  to  Pacific  shall  be  deemed  to be  references  to the  Surviving
Corporation.





                                       B-4

<PAGE>



         8. Stock  Transfer  Books.  On the Effective  Date,  the stock transfer
books of Pacific  shall be closed,  and no  transfer  of  Pacific  Common  Stock
theretofore outstanding shall thereafter be made.

         9. The  Shareholders'  Meetings.  The Merger  shall be submitted to the
shareholders of the each of SBB and Pacific at meetings to be called and held as
promptly as  practicable.  Upon approval of the Merger by the requisite  vote of
the shareholders of each of SBB and Pacific, this Merger Agreement shall be made
effective as soon as practicable thereafter in the manner provided in Section 15
hereof.

         10. Dissenters'  Rights. Any shareholder of Pacific who perfects his or
her  dissenter's  rights in accordance  with the provisions of Chapter 13 of the
GCL shall be governed by such provisions of law.

         11.  Conditions  to  Consummation  of the Merger.  Consummation  of the
Merger as provided  herein shall be conditioned  upon: (i)  consummation  of the
Agreement and Plan of  Reorganization  by and between SBB and Pacific,  (ii) the
receipt of all  consents,  orders and approvals  and  satisfaction  of all other
requirements  prescribed by law which are necessary for the  consummation of the
Merger, including without limitation,  the approval of the Board of Governors of
the Federal Reserve System.

         12. Termination.  This Merger Agreement may be terminated and abandoned
at any time prior to or on the  Closing  Date,  whether  before or after  action
thereon by the shareholders of SBB and Pacific,  by mutual consent of the Boards
of Directors of both SBB and Pacific.

         13.  Effect  of  Termination.  In  the  event  of the  termination  and
abandonment  of this Merger  Agreement  pursuant to the provisions of Section 12
hereof,  the same shall be of no further  force or effect and there  shall be no
liability by reason of this Merger  Agreement or the termination  thereof on the
part of either SBB,  Pacific or the directors,  officers,  employees,  agents or
stockholders of either of them.

          14.  Waiver  and  Amendment.  Any of the terms or  conditions  of this
Merger  Agreement  may be  waived at any time,  whether  before or after  action
thereon by the shareholders of SBB and Pacific, by the party that is entitled to
the benefits thereof. This Merger Agreement may be amended by action taken by or
on behalf of the board of  directors  of SBB and  Pacific at any time  before or
after adoption of this Merger  Agreement by the  shareholders of SBB and Pacific
but, after any submission of this Agreement to such  shareholders  for approval,
no amendment  shall be made that (i)  decreases the Merger  Consideration  to be
paid for the Pacific Common Stock as set forth in Section 5, or (ii)  materially
and adversely  affects the rights of the  shareholders  of either SBB or Pacific
hereunder  without  the  requisite  approval of such  shareholders.  Any waiver,
modification or amendment of this Merger Agreement shall be in writing.

         15. Effective Date.  Subject to the terms, and upon  satisfaction on or
before the Closing Date of all requirements of law, and the conditions specified
in this Merger Agreement, the Merger  shall become effective  on the date speci-
fied in the Certificate of Merger to be  issued by the Secretary of State of the




                                       B-5

<PAGE>



date  specified in the  Certificate  of Merger to be issued by the  Secretary of
State of the State of California  under the seal of his office,  such date being
herein called the "Effective Date."

         16. Multiple  Counterparts.  For the convenience of the parties hereto,
this Merger  Agreement may be executed in multiple  counterparts,  each of which
shall be deemed an  original,  and all  counterparts  hereof so  executed by the
parties hereto, whether or not such counterpart shall bear the execution of each
of the parties hereto, shall be deemed to be, and shall be construed as, one and
the same Merger  Agreement.  A telecopy or  facsimile  transmission  of a signed
counterpart  of this Merger  Agreement  shall be sufficient to bind the party or
parties whose signature(s) appear thereon.

         17. Governing Law.  THIS MERGER AGREEMENT SHALL BE CONSTRUED IN ACCORD-
ANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF CALIFORNIA.

         18. Further Assurances.  Each party hereto agrees from time to time, as
and when  requested by the other party hereto,  or by its successors or assigns,
to execute and deliver,  or cause to be executed and  delivered,  all such deeds
and  instruments  and to take or cause to be taken such  further or other  acts,
either  before or after  the  Effective  Date,  as may be  deemed  necessary  or
desirable in order to vest in and confirm to the Surviving  Corporation title to
and  possession  of any assets of SBB or Pacific  acquired  or to be acquired by
reason of or as a result of the Merger and otherwise to carry out the intent and
purposes hereof,  and the officers and directors of the parties hereto are fully
authorized in the name of their  respective  corporate names to take any and all
such actions.

         19.  Assignment.  This Merger Agreement shall be binding upon and inure
to the  benefit  of the  parties  hereto  and their  respective  successors  and
assigns,  but no  party  to this  Merger  Agreement  shall  assign  this  Merger
Agreement,  by operation of law or otherwise,  in whole or in part,  without the
prior written consent of the other parties.  Any assignment made or attempted in
violation of this Section 19 shall be void and of no effect.

         20.  Severability.  In the  event  that any  provision  of this  Merger
Agreement  is held to be  illegal,  invalid or  unenforceable  under  present or
future laws,  then (a) such provision  shall be fully  severable and this Merger
Agreement  shall be  construed  and  enforced  as if such  illegal,  invalid  or
unenforceable  provision were not a part hereof; (b) the remaining provisions of
this  Merger  Agreement  shall  remain in full force and effect and shall not be
affected by such illegal, invalid or unenforceable provision or by its severance
from this Merger Agreement; and (c) there shall be added automatically as a part
of this  Merger  Agreement  a  provision  as similar  in terms to such  illegal,
invalid or unenforceable  provision as may be possible and still be legal, valid
and enforceable.

         21. Specific Performance.  Each of the parties hereto acknowledges that
the other  parties would be  irreparably  damaged and would not have an adequate
remedy at law for money damages in the event that any of the covenants contained
in this Merger  Agreement were not  performed in accordance  with its  terms  or




                                       B-6

<PAGE>



otherwise were materially breached.  Each of the parties hereto therefore agrees
that,  without the necessity of proving  actual damages or posting bond or other
security,  the other  party  shall be entitled  to  temporary  and/or  permanent
injunction  or  injunctions  to  prevent  breaches  of such  performance  and to
specific  enforcement of such covenants in addition to any other remedy to which
they may be entitled, at law or in equity.

         22. Rules of Construction.  Descriptive  headings as to the contents of
particular sections are for convenience only and shall not control or affect the
meaning,  construction  or  interpretation  of  any  provision  of  this  Merger
Agreement. Each use herein of the masculine,  neuter or feminine gender shall be
deemed to include the other genders. Each use herein of the plural shall include
the  singular and vice versa,  in each case as the context  requires or as it is
otherwise appropriate.
The word "or" is used in the inclusive sense.

         23.  Articles,  Sections,  Exhibits  and  Schedules.  Unless  otherwise
indicated,  all  articles  and  sections  referred  to herein are  articles  and
sections,  respectively,  of this Merger Agreement, and all exhibits referred to
herein are exhibits  attached to this Merger  Agreement.  Any and all schedules,
exhibits,  annexes,  statements,  reports,  certificates  or other  documents or
instruments  referred to herein or attached hereto are and shall be incorporated
herein by reference hereto as though fully set forth herein verbatim.

         24.  Binding  Effect.  All of the  terms,  covenants,  representations,
warranties  and conditions of this Merger  Agreement  shall be binding upon, and
inure to the  benefit of and be  enforceable  by, the  parties  hereto and their
respective successors,  representatives and permitted assigns. Nothing expressed
or referred to herein is intended or shall be construed to give any person other
than the parties hereto any legal or equitable  right,  remedy or claim under or
in respect of this Merger Agreement, or any provision herein contained, it being
the intention of the parties hereto that this Merger  Agreement,  the assumption
of  obligations  and  statements of  responsibilities  hereunder,  and all other
conditions and provisions hereof are for the sole benefit of the parties to this
Merger Agreement and for the benefit of no other person.  Nothing in this Merger
Agreement  shall act to relieve or discharge the  obligation or liability of any
third party to any party to this Merger Agreement,  nor shall any provision give
any third party any right of  subrogation or action over or against any party to
this Merger Agreement.


                               [Signatures Follow]




                                       B-7

<PAGE>



         IN WITNESS  WHEREOF,  SBB and Pacific have caused this Merger Agreement
to be executed  in  counterparts  by their duly  authorized  officers  and their
corporate seals to be hereunto  affixed as of the date first above written,  and
the  directors  constituting  a  majority  of the  Board  of  Directors  of such
corporations have hereunto subscribed their names.

                                     PACIFIC CAPITAL BANCORP


                                     /s/ D. Vernon Horton
                                     -------------------------------------------
                                     D. Vernon Horton, Chairman of the Board and
                                     Chief Executive Officer


                                and


                                     /s/ Dennis A. CeCius
                                     -------------------------------------------
                                     Dennis A. DeCius, Assistant Secretary


                                The Directors of
                             PACIFIC CAPITAL BANCORP
                               Salinas, California


/s/  Charles E. Bancroft                             /s/  Gene Dicicco
- ------------------------                             ---------------------------
Charles E. Bancroft                                  Gene Dicicco


/s/  Lewis L. Fenton                                 /s/  Gerald T. Fry
- ------------------------                             ---------------------------
Lewis L. Fenton                                      Gerald T. Fry


/s/  Eugene R. Guglielmo
- ------------------------                             ---------------------------
Eugene R. Guglielmo                                  James L. Gattis


/s/  Stanley R. Haynes                               /s/  Hubert W. Hudson
- ------------------------                             ---------------------------
Stanley R. Haynes                                    Hubert W. Hudson


/s/  William J. Keller                               /s/  Roger C. Knopf
- ------------------------                             ---------------------------
William J. Keller                                    Roger C. Knopf





                                       B-8

<PAGE>



/s/  William S. McAfee                               /s/  William H. Pope
- ------------------------                             ---------------------------
William S. McAfee                                    William H. Pope


/s/  Mary Lou Rawitser                               /s/  William K. Sambrailo
- ------------------------                             ---------------------------
Mary Lou Rawitser                                    William K. Sambrailo


/s/  Robert B. Sheppard
- ------------------------
Robert B. Sheppard




                                       B-9

<PAGE>



                                       SANTA BARBARA BANCORP


                                       /s/  Donald M. Anderson
                                       -----------------------------------------
                                       Donald M. Anderson, Chairman of the Board

                                       and



                                       /s/  Jay D. Smith
                                       -----------------------------------------
                                       Jay D. Smith, Corporate Secretary


                                The Directors of
                              SANTA BARBARA BANCORP
                            Santa Barbara, California


/s/  Donald M. Anderson                              /s/  David W. Spainhour
- ---------------------------                          ---------------------------
Donald M. Anderson                                   David W. Spainhour


/s/  William S. Thomas, Jr.                          /s/  Frank Barranco, M.D.
- ---------------------------                          ---------------------------
William S. Thomas, Jr.                               Frank Barranco, M.D.


/s/  Edward E. Birch
- ---------------------------                          ---------------------------
Edward E. Birch, Ph.D.                               Terrill F. Cox


/s/  Richard M. Davis
- ---------------------------                          ---------------------------
Richard M. Davis                                     Anthony Guntermann


/s/  Dale E. Hanst                                   /s/  Harry B. Powell
- ---------------------------                          ---------------------------
Dale E. Hanst                                        Harry B. Powell


/s/  Susan Trescher
- ---------------------------
Susan Trescher




                                      B-10

<PAGE>



                                  SCHEDULE ONE

               DIRECTORS AND OFFICERS OF THE SURVIVING CORPORATION


DIRECTORS

         Donald M. Anderson - Chairman
         Frank Barranco, M.D.
         Edward E. Birch, Ph.D
         Terrill F. Cox
         Richard M. Davis
         Anthony Guntermann
         Dale E. Hanst
         D. Vernon Horton
         Roger C. Knopf
         Clayton C. Larson
         William H. Pope
         Harry Powell
         David W. Spainhour
         William S. Thomas, Jr.
         Susan Trescher




 OFFICERS

         Donald M. Anderson       -    Chairman
         David W. Spainhour       -    President
         William S. Thomas, Jr.   -    Vice Chairman and Chief Operating Officer
         D. Vernon Horton         -    Vice Chairman
         Clayton C. Larson        -    Vice Chairman
         David A. Abts            -    Executive Vice President
         Donald E. Barry          -    Executive Vice President
         Donald Lafler            -    Senior Vice President and Chief Financial
                                       Officer
         John J. McGrath          -    Senior Vice President
         Jay D. Smith             -    Senior Vice President, General Counsel
                                       and Corporate Secretary
         Catherine R. Steinke     -    Senior Vice President
         Kent M. Vining           -    Senior Vice President and Strategic
                                       Planning Officer




                                      B-11

<PAGE>



                                                                      APPENDIX C
                                                                      ----------


                      SANTA BARBARA STOCK OPTION AGREEMENT

         This  STOCK  OPTION   AGREEMENT,  dated   as  of  July  20,  1998  (the
"Agreement"),  is by and between Santa Barbara Bancorp, a California corporation
("Issuer"), and Pacific Capital Bancorp, a California corporation ("Grantee").

         WHEREAS,  Issuer and Grantee have entered into an Agreement and Plan of
Reorganization dated as of July 20, 1998 (the "Merger Agreement") providing for,
among other things,  the merger of Grantee with and into Issuer,  with Issuer as
the surviving corporation; and

         WHEREAS,  as a condition and  inducement to Grantee's  execution of the
Merger Agreement, Grantee has required that Issuer agree, and Issuer has agreed,
to grant Grantee the Option (as defined below);

         NOW,  THEREFORE,  in  consideration of the foregoing and the respective
representations,  warranties,  covenants and  agreements set forth herein and in
the Merger  Agreement,  and  intending to be legally  bound  hereby,  Issuer and
Grantee agree as follows:

1. Defined Terms.  Capitalized terms which are used but not defined herein shall
have the meanings ascribed to such terms in the Merger Agreement.

2. Grant of Option. Subject to the terms and conditions set forth herein, Issuer
hereby grants to Grantee an irrevocable  option (the "Option") to purchase up to
3,002,505 shares (the "Option  Shares") of common stock of Issuer,  no par value
("Issuer  Common  Stock"),  at a purchase  price per Option Share (the "Purchase
Price") equal to $30.00; provided, however, that in no event shall the number of
shares of Issuer Common Stock for which this Option is exercisable  exceed 19.5%
of the Issuer's  issued and  outstanding  shares of Common Stock.  The number of
shares of Issuer  Common  Stock that may be  received  upon the  exercise of the
Option and the Purchase Price are subject to adjustment as herein set forth.

3.         Exercise of Option.

         (a) Provided  that (i) Grantee  shall not be in material  breach of the
agreements or covenants contained in this Agreement or the Merger Agreement, and
(ii) no preliminary or permanent  injunction or other order against the delivery
of the Option Shares issued by any court of competent jurisdiction in the United
States shall be in effect, Grantee may exercise the Option, in whole or in part,
at any time and from  time to time,  but  only  following  the  occurrence  of a
Purchase Event (as defined below);  provided that the Option shall terminate and
be of no further  force or effect upon the earlier to occur of (A) the Effective
Time of the Merger,  (B) the  termination of the Merger  Agreement in accordance
with  the  terms  thereof  before  the  occurrence  of  a  Purchase  Event  or a
Preliminary Purchase Event (other  than a termination of the Merger Agreement by




                                       C-1

<PAGE>



Grantee pursuant to Section 9.02(e),  9.02(f) or 9.02(m) of the Merger Agreement
(an "Issuer Termination")); (C) the close of business on the 365th day after the
occurrence of an Issuer Termination;  and (D) the close of business on the 365th
day after termination of the Merger Agreement (other than an Issuer Termination)
following the  occurrence of a Purchase  Event or a Preliminary  Purchase  Event
(hereinafter sometimes referred to as the "Termination Date"); provided that any
purchase of Option  Shares upon the  exercise of the Option  shall be subject to
compliance with applicable law, including,  without limitation, the Bank Holding
Company  Act of  1956  (the  "BHCA"),  and any  other  required  consent  of any
regulatory authority.  The rights set forth in Section 8 of this Agreement shall
terminate  when the right to  exercise  the Option  terminates  (other than as a
result of a complete exercise of the Option) as set forth herein.

         (b)      As used herein, a "Purchase  Event" means any of the following
events:

                    (i) without  Grantee's prior written  consent,  Issuer shall
           have authorized, recommended, publicly proposed or publicly announced
           an intention to authorize,  recommend or propose,  or entered into an
           agreement  with any person  (other than Grantee or any  subsidiary of
           Grantee) to effect an Acquisition  Transaction (as defined below). As
           used herein,  the term "Acquisition  Transaction"  shall mean (A) any
           tender offer for more than 50% of the  outstanding  shares of Issuer,
           (B) any  merger or  consolidation  of Issuer  with or into any entity
           other than Grantee or a subsidiary of Grantee, (C) any sale of all or
           substantially all of the assets of Issuer,  (D) any reorganization of
           Issuer or other  transaction  that  results or when  completed  would
           result in a disposition of substantially all of the assets of Issuer,
           or (E) the issuance, sale or other disposition of shares representing
           more than 50% of the shares of Issuer.

                    (ii) any person  (other than  Grantee or any  subsidiary  of
           Grantee)  shall have acquired  beneficial  ownership (as such term is
           defined in Rule 13d-3 promulgated  under the Securities  Exchange Act
           of 1934, as amended (the "Exchange Act")) of, or the right to acquire
           beneficial  ownership  of, or any  "group"  (as such term is  defined
           under the  Exchange  Act) shall have been formed  which  beneficially
           owns or has the right to acquire  beneficial  ownership  of more than
           50% of the shares of Issuer.

                  (c) As used herein,  a "Preliminary  Purchase Event" means any
of the following events:

                  (i) any  person  (other  than  Grantee  or any  subsidiary  of
           Grantee)  shall have commenced (as such term is defined in Rule 14d-2
           under the Exchange Act) or shall have filed a registration  statement
           under the Securities Act of 1933, as amended (the "Securities  Act"),
           with  respect to a tender  offer or exchange  offer to  purchase  any
           shares of Issuer Common Stock such that,  upon  consummation  of such
           offer,  such  person  would own or control  more than 50% of the then
           outstanding  shares  of  Issuer  Common  Stock  (such an offer  being
           referred  to  herein  as a "Tender  Offer"  or an  "Exchange  Offer",
           respectively); or

                    (ii) the  holders  of  Issuer  Common  Stock  shall not have
           approved the Merger  Agreement in accordance with all applicable law,
           the Articles of  Incorporation or Bylaws  of the Issuer  or any other




                                       C-2

<PAGE>



           agreement or, contract or law to  which such holders of Issuer Common
           Stock are subject,  including, if applicable,  but not limited to, at
           the meeting of  such shareholders held  for the purpose  of voting on
           the Merger Agreement,  such meeting shall not have been held or shall
           have been canceled  prior to termination  of the Merger  Agreement or
           Issuer's Board of  Directors shall have  withdrawn or modified  in  a
           manner adverse to  Grantee the  recommendation  of Issuer's Board  of
           Directors with respect  to the Merger  Agreement, in each case, after
           it shall have  been publicly announced  that any person  (other  than
           Grantee or any  subsidiary of Grantee)  shall have (A)  made, or dis-
           closed an intention  to make, a  proposal to engage in an Acquisition
           Transaction, (B) commenced  a Tender Offer  or filed  a  registration
           statement under the Securities Act  with respect to an Exchange Offer
           or (C) filed an application  (or given a notice), whether in draft or
           final form, under  applicable banking or  corporate law or  any other
           applicable  law,  including,  without  limitation,  the BHCA, seeking
           approval to engage in an Acquisition Transaction.

As used in this Agreement, "person" shall have the meaning specified in Sections
3(a)(9) and 13(d)(3) of the Exchange Act.

         (d) Issuer shall notify  Grantee  promptly in writing of the occurrence
of any Preliminary  Purchase Event or Purchase  Event, it being  understood that
the giving of such  notice by Issuer  shall not be a  condition  to the right of
Grantee to exercise the Option.

         (e) In the event Grantee  wishes to exercise the Option,  it shall send
to Issuer a written  notice (the date of which being  herein  referred to as the
"Notice  Date")  specifying  (i) the total number of Option Shares it intends to
purchase  pursuant to such  exercise  and (ii) subject to the next  sentence,  a
place and date not earlier than three (3)  business  days nor later than fifteen
(15) business days after the Notice Date for the closing (the "Closing") of such
purchase  (the  "Closing  Date").  If prior  notification  to or  consent of any
regulatory  authority  is  required  in  connection  with such  purchase,  then,
notwithstanding  the prior occurrence of the Termination  Date, the Closing Date
shall be  extended  for such period as shall be  necessary  to enable such prior
notification  or consent to occur or to be obtained  (and the  expiration of any
mandatory waiting period). Issuer shall co-operate with Grantee in the filing of
any  applications  or documents  necessary to obtain any required  consent or in
connection  with any required  prior  notification  and the Closing  shall occur
immediately  following  receipt of such consent (or the filing of any such prior
notification and the expiration of any mandatory waiting periods).

4.         Payment and Delivery of Certificates.

         (a)  On  each  Closing  Date,  Grantee  shall  (i)  pay to  Issuer,  in
immediately  available  funds by wire  transfer to a bank account  designated by
Issuer, an amount equal to the Purchase Price multiplied by the number of Option
Shares to be purchased on such Closing Date, and (ii) present and surrender this
Agreement to the Issuer at the address of the Issuer specified herein.

         (b) At each Closing,  simultaneously  with the delivery of  immediately
available  funds and  surrender  of this  Agreement  as provided in Section 4(a)
above, (i) Issuer shall  deliver to Grantee  (A) a certificate  or  certificates




                                       C-3

<PAGE>



representing  the Option  Shares to be purchased at such  Closing,  which Option
Shares shall be free and clear of all liens, claims, charges and encumbrances of
any kind whatsoever and subject to no pre-emptive  rights, and (B) if the Option
is exercised in part only,  a new Stock  Option  Agreement,  executed by Issuer,
with the same  terms as this  Agreement  evidencing  the right to  purchase  the
balance of the shares of Issuer  Common Stock  purchasable  hereunder,  and (ii)
Grantee shall  deliver to Issuer a letter  agreeing that Grantee shall not offer
to sell or otherwise  dispose of such Option  Shares in violation of  applicable
federal and state law or of the provisions of this Agreement.

         (c) In addition to any other legend that is required by applicable law,
certificates  for the Option Shares  delivered at each Closing shall be endorsed
with a restrictive legend which shall read substantially as follows:

THE  TRANSFER  OF THE  STOCK  REPRESENTED  BY THIS  CERTIFICATE  IS  SUBJECT  TO
RESTRICTIONS  ARISING UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND PURSUANT
TO THE TERMS OF A STOCK  OPTION  AGREEMENT  DATED AS OF JULY 20, 1998. A COPY OF
SUCH AGREEMENT WILL BE PROVIDED TO THE HOLDER HEREOF WITHOUT CHARGE UPON RECEIPT
BY THE ISSUER OF A WRITTEN REQUEST THEREFOR.

It is  understood  and agreed that the above legend shall be removed by delivery
of substitute  certificates  without such legend if Grantee shall have delivered
to Issuer an opinion of counsel in form and substance reasonably satisfactory to
Issuer and its  counsel,  to the effect  that such  legend is not  required  for
purposes of the Securities Act.

         (d) Upon the  giving by  Grantee  to Issuer  of the  written  notice of
exercise of the Option  provided for under Section 3(e) of this  Agreement,  the
tender of the applicable  Purchase Price in immediately  available funds and the
tender of this Agreement to Issuer,  Grantee shall be deemed to be the holder of
record  of the  shares of  Issuer  Common  Stock  issuable  upon such  exercise,
notwithstanding  that the stock transfer books of Issuer shall then be closed or
that certificates representing such shares of Issuer Common Stock shall not then
be actually delivered to Grantee. Issuer shall pay all expenses, and any and all
United  States  federal,  state,  and local taxes and other  charges that may be
payable in  connection  with the  preparation,  issuance  and  delivery of stock
certificates  under  this  Section  in the  name  of  Grantee  or its  assignee,
transferee, or designee.

         (e) Issuer  agrees (i) that it shall at all times  maintain,  free from
pre-emptive  rights,  sufficient  authorized but unissued or treasury  shares of
Issuer  Common  Stock so that the Option  may be  exercised  without  additional
authorization  of Issuer Common Stock after giving effect to all other  options,
warrants,  convertible  securities  and other rights to purchase  Issuer  Common
Stock,  (ii) that it will not, by amendment to its Articles of  Incorporation or
Bylaws or through. reorganization, consolidation, merger, dissolution or sale of
assets,  or by any other voluntary act, avoid or seek to avoid the observance or
performance of any of the covenants,  stipulations  or conditions to be observed
or performed hereunder by Issuer,  (iii) promptly to take all action as may from
time to time be required  (including (A) complying (if applicable)  with all pre
merger notification,  reporting and waiting period requirements  specified in 15
U.S.C. ss. 18a  and regulations promulgated  thereunder  and (B)  in  the event,




                                       C-4

<PAGE>



under any  federal or state law,  prior  notice to or consent of any  regulatory
authority is necessary  before the Option may be  exercised  co-operating  fully
with Grantee in preparing any required  application or notice and providing such
information  to such  regulatory  authority  as such  regulatory  authority  may
require) in order to permit  Grantee to exercise  the Option and Issuer duly and
effectively  to issue shares of Issuer Common Stock  pursuant  hereto,  and (iv)
promptly  to take all action  provided  herein to protect  the rights of Grantee
against dilution.

5.       Representations and Warranties of Issuer.  Issuer hereby represents and
         warrants to Grantee as follows:

         (a) Due  Authorization.  Issuer has all requisite  corporate  power and
authority to enter into this Agreement and, subject to any approvals referred to
herein, to consummate the transactions  contemplated  hereby.  The execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been duly authorized by all necessary  corporate  action on the part
of Issuer. This Agreement has been duly executed and delivered by Issuer.

         (b)  Authorized  Stock.  Issuer has taken all  necessary  corporate and
other  action to  authorize  and reserve and to permit it to issue,  and, at all
times from the date hereof until the  obligation to deliver  Issuer Common Stock
upon the exercise of the Option  terminates,  will have  reserved for  issuance,
upon  exercise  of the  Option,  the  number of shares  of Issuer  Common  Stock
necessary for Grantee to exercise the Option, and Issuer will take all necessary
corporate action to authorize and reserve for issuance all additional  shares of
Issuer Common Stock or other  securities which may be issued pursuant to Section
7 of this  Agreement  upon  exercise of the Option.  The shares of Issuer Common
Stock to be issued upon due  exercise of the Option,  including  all  additional
shares of Issuer Common Stock or other securities which may be issuable pursuant
to Section 7 of this Agreement, upon issuance pursuant hereto, shall be duly and
validly issued,  fully paid and  nonassessable,  and shall be delivered free and
clear of all  liens,  claims,  charges  and  encumbrances  of any kind or nature
whatsoever, including any pre-emptive right of any shareholder of Issuer.

         (c) No Violation.  The execution  and delivery of this  Agreement  does
not, and the  consummation  of the  transactions  contemplated  hereby will not,
conflict  with,  or result in any  violation  pursuant to any  provisions of the
Articles of  Incorporation  or By-laws of Issuer or,  subject to  obtaining  any
approvals or consents  contemplated hereby,  result in any violation of any loan
or credit agreement, note, mortgage,  indenture, lease, plan or other agreement,
obligation, instrument, permit, concession, franchise, license, judgment, order,
decree, statute, law, ordinance,  rule or regulation applicable to Issuer or its
properties or assets which violation would have a Material Adverse Effect on the
Issuer.

6.       Representations  and Warranties of Grantee.  Grantee hereby  represents
         and warrants to Issuer that:





                                       C-5

<PAGE>



         (a) Due  Authorization.  Grantee has all requisite  corporate power and
authority to enter to this Agreement  and,  subject to any approvals or consents
referred to herein,  to consummate the  transactions  contemplated  hereby.  The
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions  contemplated  hereby have been duly  authorized  by all  necessary
corporate  action on the part of Grantee.  This Agreement has been duly executed
and delivered by Grantee.

         (b) Purchase Not for  Distribution.  This Option is not being,  and any
Option  Shares or other  securities  acquired  by Grantee  upon  exercise of the
Option will not be, acquired with a view to the public distribution  thereof and
will not be  transferred  or  otherwise  disposed  of  except  in a  transaction
registered or exempt from registration under the Securities Act.

7.       Adjustment upon Changes in Capitalization, etc.

         (a) In the event of any  change in Issuer  Common  Stock by reason of a
stock dividend stock split, split-up, recapitalization, combination, exchange of
shares or  similar  transaction,  the type and  number  of shares or  securities
subject to the  Option,  and the  Purchase  Price  therefor,  shall be  adjusted
appropriately,  and proper  provision shall be made in the agreements  governing
such transaction so that Grantee shall receive, upon exercise of the Option, the
number and class of shares or other  securities  or property  that Grantee would
have received in respect of Issuer Common Stock if the Option had been exercised
immediately prior to such event, or the record date therefor, as applicable.  If
any  additional  shares of Issuer Common Stock are issued after the date of this
Agreement  (other than pursuant to an event  described in the first  sentence of
this Section  7(a)),  the number of shares of Issuer Common Stock subject to the
Option shall be adjusted so that, after such issuance, the Option, together with
any shares of Issuer Common Stock  previously  issued  pursuant  hereto,  equals
19.5%  of  the  number  of  shares  of  Issuer  Common  Stock  then  issued  and
outstanding,  without giving effect to any shares subject to or issued  pursuant
to the Option.

         (b) In the event that,  prior to the  Termination  Date,  Issuer  shall
enter in an agreement:

                  (i) to consolidate  with or merge into any person,  other than
         Grantee or one of its subsidiaries,  and shall not be the continuing or
         surviving  corporation of such consolidation or merger;  (ii) to permit
         any person,  other than  Grantee or one of its  subsidiaries,  to merge
         into  Issuer  where  Issuer  shall  be  the   continuing  or  surviving
         corporation,  but, in connection with such merger, the then outstanding
         shares of Issuer  Common Stock shall be changed  into or exchanged  for
         stock or other  securities of Issuer or any other person or cash or any
         other  property  or the  outstanding  shares  of  Issuer  Common  Stock
         immediately prior to such merger shall after such merger represent less
         than 50% of the outstanding  shares and share equivalents of the merged
         company; or (iii) to  sell or otherwise transfer  all or  substantially
         all of its assets to any  person,  other  than  Grantee  or  one of its
         subsidiaries, then, and in each such case, the agreement governing such
         transaction shall make proper provisions so that, upon the consummation
         of any such  transaction  and upon the terms and  conditions  set forth
         herein,  the  Option,  notwithstanding  the fact that as of the date of
         consummation of  such  transaction  the  Termination  Date  shall  have




                                       C-6

<PAGE>



         occurred,  shall be  converted  into, or exchanged  for, an option (the
         "Substitute Option"), at  the election of  Grantee, of  either  (x) the
         Acquiring Corporation (as defined  below), (y) any person that controls
         the Acquiring Corporation, or (z)  in the case of a merger described in
         clause (ii), the Issuer (in each case, such entity being referred to as
         the "Substitute Option Issuer").

         (c) The  Substitute  Option  shall have the same  terms as the  Option,
provided  that, if the terms of the  Substitute  Option  cannot,  because of the
applicability of any law or regulation, have the exact terms as the Option, such
terms  shall be as similar as  possible  and in no event  less  advantageous  to
Grantee.  The  Substitute  Option Issuer shall also enter into an agreement with
the then-holder or holders of the Substitute  Option in  substantially  the same
form as this Agreement, which shall be applicable to the Substitute Option.

         (d) The  Substitute  Option  shall be  exercisable  for such  number of
shares of the Substitute  Common Stock (as  hereinafter  defined) as is equal to
the Assigned Value (as hereinafter  defined)  multiplied by the number of shares
of the Issuer  Common  Stock for which the Option was  theretofore  exercisable,
divided by the Average Price (as  hereinafter  defined).  The exercise  price of
each share of  Substitute  Common Stock  subject to the  Substitute  Option (the
"Substitute  Purchase Price") shall be equal to the Purchase Price multiplied by
a fraction in which the  numerator is the number of shares of the Issuer  Common
Stock for which the Option was  theretofore  exercisable  and the denominator is
the number of shares for which the Substitute Option is exercisable.

           (e) The following terms have the meanings indicated:

                    (i) "Acquiring Corporation" shall mean (x) the continuing or
           surviving  corporation of a  consolidation  or merger with respect to
           which  Issuer is one of the parties (if other than  Issuer),  (y) the
           Issuer in a  consolidation  or  merger or in which the  Issuer is the
           continuing or surviving corporation, and (z) the transferee of all or
           any substantial part of the Issuer's assets.

                    (ii)  "Assigned  Value"  shall  mean the  highest of (x) the
           price per share of the Issuer Common Stock at which a Tender Offer or
           Exchange  Offer  therefor  has been made by any  person  (other  than
           Grantee),  (y) the price per share of the Issuer  Common  Stock to be
           paid by any person (other than the Grantee)  pursuant to an agreement
           with Issuer,  or (z) the highest last sales price per share of Issuer
           Common Stock quoted on any national  securities  exchange  (including
           the NASDAQ - National  Market  System) (or if Issuer  Common Stock is
           not quoted on any such national securities exchange,  the highest bid
           price per share on any day as quoted on the principal  trading market
           or securities exchange on which such shares are traded as reported by
           a recognized  source chosen by Grantee)  within the six-month  period
           immediately  preceding the agreement described in Section 7(b) above;
           provided,  however,  that in the  event of a sale of less than all of
           Issuer's  assets,  the  Assigned  Value shall be the sum of the price
           paid in such sale for such assets and the current market value of the
           remaining  assets of Issuer as determined by a nationally  recognized
           investment banking firm selected by Grantee, divided by the number of




                                       C-7

<PAGE>



           shares of the  Issuer Common Stock  outstanding at the  time  of such
           sale.  In the event a Tender  Offer or Exchange Offer is made for the
           Issuer Common Stock  or an agreement  is entered into for a merger or
           consolidation involving consideration  other than cash,  the value of
           the securities or  other property issuable or deliverable in exchange
           for the Issuer  Common Stock shall  be determined by a nationally re-
           cognized investment banking  firm  mutually selected  by  Grantee and
           Issuer (or if applicable, Acquiring  Corporation), provided that if a
           mutual selection cannot  be made as  to such investment banking firm,
           it shall be selected by Grantee.

                   (iii) "Average Price" shall mean the average last sales price
         of a share of the Substitute  Common Stock for the one year immediately
         preceding the consolidation,  merger or sale in question,  as quoted on
         any  national  securities  exchange  (including  the  NASDAQ - National
         Market System), and if the Substitute Common Stock is not quoted on any
         such national securities exchange, the average of the bid price for the
         one year period  described  above,  as quoted on the principal  trading
         market or securities  exchange on which such Substitute Common Stock is
         traded, as reported by a recognized  source, as chosen by Grantee,  but
         in no event  higher than the last sales  price or closing  price or the
         bid  price of the  shares  of the  Substitute  Common  Stock on the day
         preceding such consolidation,  merger, or sale; provided that if Issuer
         is the issuer of the  Substitute  Option,  the  Average  Price shall be
         computed with respect to a share of common stock issued by Issuer,  the
         person  merging  into  Issuer or by any  company  which  controls or is
         controlled by such person, as Grantee may elect.

                  (iv)  "Substitute  Common  Stock"  shall mean the common stock
         issued  by the  Substitute  Option  Issuer  upon  the  exercise  of the
         Substitute Option.

         (f) In no event pursuant to any of the foregoing  paragraphs  shall the
Substitute  Option be  exercisable  for more than 19.5% of the  aggregate of the
shares of the  Substitute  Common  Stock  outstanding  prior to  exercise of the
Substitute  Option. In the event that the Substitute Option would be exercisable
for more than  19.5% of the  aggregate  of the shares of the  Substitute  Common
Stock but for this clause (f), the  Substitute  Option  Issuer shall make a cash
payment to Grantee equal to the amount of (i) the value of the Substitute Option
without giving effect to the limitation in this clause (f) in excess of (ii) the
value of the  Substitute  Option after giving  effect to the  limitation in this
clause  (f).  This  difference  in value  shall be  determined  by a  nationally
recognized investment banking firm selected by Grantee.

         (g) Issuer shall not enter into any transaction described in subsection
(b) of this  Section 7 unless the  Acquiring  Corporation  and any  person  that
controls the Acquiring  Corporation assumes in writing all of the obligations of
Issuer  hereunder  and takes all other actions that may be necessary so that the
provisions of this Section 7 are given full force and effect (including, without
limitation,  any action that may be necessary  so that the shares of  Substitute
Common  Stock are in no way  distinguished  from or have lesser  economic  value
(other than any diminution  resulting  from the fact that the Substitute  Common
Stock is  "restricted  securities"  within  the  meaning  of Rule 144  under the
Securities  Act) than  other  shares of common  stock  issued by the  Substitute
Option Issuer).




                                       C-8

<PAGE>



         (h)  The  provisions  of  Sections  8,  9  and  10  shall  apply,  with
appropriate  adjustments,  to  any  securities  for  which  the  Option  becomes
exercisable  pursuant to this Section 7 and, as  applicable,  references in such
sections to "Issuer,"  "Option,"  "Purchase  Price," and "Issuer  Common  Stock"
shall be deemed to be  references to  "Substitute  Option  Issuer,"  "Substitute
Option,  "  "Substitute  Purchase  Price,  " and  "Substitute  Common  Stock,  "
respectively.

8.       Repurchase at the Option of Grantee.

         (a) Subject to the last sentence of Section 3(a) of this Agreement,  at
the request of Grantee at any time  commencing  upon the first  occurrence  of a
Repurchase  Event  (as  defined  in  Section  8(d))  and  ending at the close of
business 365 days  thereafter,  Issuer shall  repurchase from Grantee the Option
and all shares of Issuer Common Stock purchased by Grantee  pursuant hereto with
respect  to which  Grantee  then  has  beneficial  ownership.  The date on which
Grantee exercises its rights under this Section 8 is referred to as the "Request
Date". Such repurchase shall be at an aggregate price (the "Section 8 Repurchase
Consideration") equal to the sum of:

                  (i) the  aggregate  Purchase  Price  paid by  Grantee  for any
         shares of Issuer Common Stock acquired  pursuant to complete or partial
         exercise  of  the  Option  with  respect  to  which  Grantee  then  has
         beneficial ownership;

                  (ii) the  excess,  if any,  of (x) the  Applicable  Price  (as
         defined  below)  for each  share of Issuer  Common  Stock  over (y) the
         Purchase  Price   (subject  to  adjustment   pursuant  to  Section  7),
         multiplied  by the number of shares of Issuer Common Stock with respect
         to which the Option has not been exercised; and

                  (iii) the  excess,  if any, of the  Applicable  Price over the
         Purchase Price (subject to adjustment  pursuant to Section 7) paid (or,
         in the case of Option  Shares with respect to which the Option has been
         exercised  but the Closing Date has not  occurred,  payable) by Grantee
         for each share of Issuer  Common Stock with respect to which the Option
         has  been  exercised  and  with  respect  to  which  Grantee  then  has
         beneficial ownership, multiplied by the number of such shares.

         (b) If Grantee exercises its rights under this Section 8, Issuer shall,
within  ten (10)  business  days  after  the  Request  Date,  pay the  Section 8
Repurchase   Consideration  to  Grantee  in  immediately  available  funds,  and
contemporaneously with such payment Grantee shall surrender to Issuer the Option
and the  certificates  evidencing  the shares of Issuer  Common Stock  purchased
thereunder  with respect to which  Grantee then has  beneficial  ownership,  and
Grantee shall warrant that it has sole record and  beneficial  ownership of such
shares and that the same are then free and clear of all liens,  claims,  charges
and encumbrances of any kind whatsoever.  Notwithstanding the foregoing,  to the
extent that prior  notification  to or consent of any  regulatory  authority  is
required in  connection  with the payment of all or any portion of the Section 8
Repurchase  Consideration,  or  Issuer is  prohibited  under  applicable  law or
regulation,  or as a consequence of administrative policy, from repurchasing the
Option  and/or the Option  Shares in full,  Issuer shall  immediately  so notify
Grantee and thereafter deliver from time to time, and as permitted by applicable
law or regulation,  that portion of the Section 8 Repurchase  Consideration that
it is not  then so prohibited  from paying within  five business days  after the




                                       C-9

<PAGE>



the date on  which Issuer is  no longer prohibited;  provided, however, that  if
Issuer at any  time is prohibited  under applicable law  or regulation, or  as a
consequence of administrative policy, from delivering to the Grantee the Section
8 Repurchase Consideration,  in full (and  Issuer hereby undertakes  to  use its
best efforts to  obtain all required  consents of regulatory  authorities and to
file any required notices as promptly as practicable in order to accomplish such
repurchase), the Grantee may, at its  option, revoke its request that Issuer re-
purchase the Option or the Option Shares either in whole or to the extent of the
prohibition, whereupon, in the latter case, Issuer shall promptly (i) deliver to
the Grantee that portion of the Section  8 Repurchase Consideration that  Issuer
is not prohibited from delivering; and (ii) deliver, to the Grantee either (A) a
new Stock Option  Agreement evidencing the  right  of Issuer  to  purchase  that
number of shares of Common Stock obtained by multiplying the number of shares of
Common Stock for which the  surrendered  Stock Option  Agreement was exercisable
at the time of delivery of the notice of repurchase by a fraction, the numerator
of which is the Section 8  Repurchase  Consideration  less the  portion  thereof
theretofore delivered to the Grantee and the denominator of which is the Section
8 Repurchase  Consideration,  or (B) a  certificate  for the Option Shares it is
then prohibited from repurchasing.

         Notwithstanding  anything  herein  to the  contrary,  all of  Grantee's
rights under this  Section 8 shall  terminate  on the  Termination  Date of this
Option pursuant to Section 3(a) of this Agreement.

         (c) For purposes of this Agreement,  the  "Applicable  Price" means the
highest of: (i) the highest  price per share of Issuer Common Stock paid for any
such share by the person or groups described in Section 8(d)(i) below;  (ii) the
price per share of Issuer  Common  Stock  received  by holders of Issuer  Common
Stock in connection  with any merger or other business  combination  transaction
described in Section 7(b)(i),  7(b)(ii) or 7(b)(iii) above; or (iii) the highest
last  sales  price per  share of  Issuer  Common  Stock  quoted on any  national
securities  exchange  (including  the NASDAQ - National  Market  System)  (or if
Issuer Common Stock is not quoted on any such national securities exchange,  the
highest  bid  price  per share as  quoted  on the  principal  trading  market or
securities  exchange on which such shares are traded as reported by a recognized
source  chosen by Grantee)  during the sixty (60)  business  days  preceding the
Request Date; provided, however, that in the event of a sale of less than all of
Issuer's assets, the Applicable Price shall be the sum of the price paid in such
sale for such assets and the current  market  value of the  remaining  assets of
Issuer as determined by a nationally recognized investment banking firm selected
by  Grantee,  divided  by the  number  of  shares  of the  Issuer  Common  Stock
outstanding at the time of such sale. If the  consideration to be offered,  paid
or  received  pursuant to either of the  foregoing  clauses (i) or (ii) shall be
other than in cash, the value of such consideration  shall be determined in good
faith by an independent  nationally  recognized investment banking firm selected
by Grantee and reasonably  acceptable to Issuer,  which  determination  shall be
conclusive for all purposes of this Agreement.

         (d) As used herein, a "Repurchase  Event" shall occur if (i) any person
(other than Grantee or any subsidiary of Grantee) shall have acquired beneficial
ownership  of (as such  term is  defined  in Rule  l3d-3  promulgated  under the
Exchange Act), or the right to acquire  beneficial  ownership of, or any "group"
(as such term is defined  under the Exchange Act)  shall have been formed  which




                                      C-10

<PAGE>



beneficially owns or has the right to acquire beneficial ownership of, more than
50% of the then outstanding  shares of Issuer Common  Stock, or (ii)  any of the
transactions described in Section 7(b)(i), 7(b)(ii) or 7(b)(iii) of this Agree-
ment shall be consummated.

9.       Registration Rights.

         (a) Demand Registration Rights. Issuer shall, subject to the conditions
of subparagraph (c) below, if requested by Grantee, as expeditiously as possible
prepare  and file a  registration  statement  under the  Securities  Act if such
registration  is necessary in order to permit the sale or other  disposition  of
any or all  shares of Issuer  Common  Stock or other  securities  that have been
acquired by or are issuable to Grantee upon exercise of the Option in accordance
with the intended method of sale or other disposition  stated by Grantee in such
request,  including without limitation a "shelf'"  registration  statement under
Rule 415 under the Securities Act or any successor  provision,  and Issuer shall
use its best efforts to qualify such shares or other  securities  for sale under
any applicable state securities laws.

         (b)  Additional  Registration  Rights.  If Issuer at any time after the
exercise of the Option  proposes to register  any shares of Issuer  Common Stock
under the Securities Act in connection with an  underwritten  public offering of
such Issuer  Common Stock,  Issuer will promptly give written  notice to Grantee
(and any permitted  transferee)  of its intention to do so and, upon the written
request of Grantee (or any such permitted transferee of Grantee) given within 30
days after receipt of any such notice (which request shall specify the number of
shares of Issuer  Common  Stock  intended to be  included  in such  underwritten
public  offering by Grantee (or such permitted  transferee)),  Issuer will cause
all such shares, the holders of which shall have requested participation in such
registration,  to be so  registered  and  included in such  underwritten  public
offering; provided, that the Issuer may elect not to cause all of the shares for
which  the  Grantee  has  requested  participation  in such  registration  to be
registered   and  included  in  such   underwritten   public   offering  if  the
underwriters,  for good  business  reasons  and in good  faith,  object  to such
inclusion.

         (c)  Conditions  to  Required   Registration.   Issuer  shall  use  all
reasonable  efforts  to  cause  each  registration   statement  referred  to  in
subparagraph (a) above to become effective and to obtain all consents or waivers
of other  parties  which are  required  therefor  and to keep such  registration
statement effective, provided, however, Issuer shall not be required to register
Option Shares under the Securities Act pursuant to subparagraph (a) above:

                    (i) prior to the earliest of (a)  termination  of the Merger
           Agreement, and (b) a Purchase Event or a Preliminary Purchase Event;

                    (ii)   on more than two occasions;

                    (iii)  more than once during any calendar year; and

                    (iv)  within  90  days  after  the   effective   date  of  a
           registration  referred to in subparagraph (b) above pursuant to which
           the holder or  holders of the  Option Shares concerned  were afforded




                                      C-11

<PAGE>



           the opportunity to register such  shares under the Securities Act and
           such shares were registered as requested.

         In addition to the foregoing,  Issuer shall not be required to maintain
the effectiveness of any registration statement after the expiration of 180 days
from the effective  date of such  registration  statement.  Issuer shall use all
reasonable efforts to make any filings, and take all steps, under all applicable
state  securities  laws to the  extent  necessary  to  permit  the sale or other
disposition  of the Option Shares so registered in accordance  with the intended
method of distribution for such shares.

         (d)  Expenses.   Except  where  applicable  state  law  prohibits  such
payments,  Issuer will pay all of its expenses  (including,  without limitation,
registration  fees,  qualification  fees,  blue  sky fees  and  expenses,  legal
expenses,  printing  expenses and the costs of special  audits or "cold comfort"
letters,  expenses of  underwriters,  excluding  discounts and  commissions  but
including  liability  insurance  if Issuer so  desires  or the  underwriters  so
require,  and the reasonable fees and expenses of any necessary special experts)
in connection with each  registration  pursuant to subparagraph (a) or (b) above
(including the related  offerings and sales by holders of Option Shares) and all
other  qualifications,  notifications or exemptions pursuant to subparagraph (a)
or (b)  above;  provided,  however,  that fees and  expenses  of  counsel to the
Grantee and any other expenses  incurred by the Grantee in connection  with such
registration shall be borne by the Grantee.

         (e)   Indemnification.   In  connection  with  any  registration  under
subparagraph (a) or (b) above Issuer hereby indemnifies the holder of the Option
Shares,  and each  underwriter  thereof,  including  each  person,  if any,  who
controls  such  holder or  underwriter  within the  meaning of Section 15 of the
Securities Act, against all expenses,  losses,  claims,  damages and liabilities
caused by any untrue, or alleged untrue,  statement of a material fact contained
in any registration statement or prospectus or notification or offering circular
(including any amendments or supplements thereto) or any preliminary prospectus,
or caused by any omission, or alleged omission, to state therein a material fact
required to be stated  therein or necessary to make the  statements  therein not
misleading,  except  insofar  as  such  expenses,  losses,  claims,  damages  or
liabilities  of such  indemnified  party are caused by any untrue  statement  or
alleged untrue  statement  that was included by Issuer in any such  registration
statement or prospectus or  notification  or offering  circular  (including  any
amendments or  supplements  thereto) in reliance  upon and in  conformity  with,
information  furnished in writing to Issuer by such indemnified  party expressly
for use therein, and Issuer and each officer, director and controlling person of
Issuer  shall be  indemnified  by such holder of the Option  Shares,  or by such
underwriter,  as the case may be, for all such expenses, losses, claims, damages
and liabilities  caused by any untrue,  or alleged untrue,  statement,  that was
included  by  Issuer  in  any  such  registration  statement  or  prospectus  or
notification  or offering  circular  (including  any  amendments or  supplements
thereto) in reliance  upon,  and in conformity  with,  information  furnished in
writing  to  Issuer  by such  holder  or such  underwriter,  as the case may be,
expressly for such use.

         Promptly upon receipt by a party  indemnified  under this  subparagraph
(e) of notice of the commencement of any action against such  indemnified  party
in respect  of which  indemnity or  reimbursement  may  be  sought  against  any




                                      C-12

<PAGE>



indemnifying  party under this  subparagraph  (e), such indemnified  party shall
notify the indemnifying party in writing of the commencement of such action, but
the  failure so to notify the  indemnifying  party  shall not  relieve it of any
liability  which it may  otherwise  have to any  indemnified  party  under  this
subparagraph  (e). In case notice of  commencement  of any such action  shall be
given to the indemnifying party as above provided,  the indemnifying party shall
be entitled to participate  in and, to the extent it may wish,  jointly with any
other  indemnifying  party  similarly  notified,  to assume the  defense of such
action at its own expense,  with counsel chosen by it and  satisfactory  to such
indemnified party. The indemnified party shall have the right to employ separate
counsel in any such action and participate in the defense thereof,  but the fees
and  expenses of such counsel  (other than  reasonable  costs of  investigation)
shall be paid by the indemnified party unless (i) the indemnifying  party either
agrees to pay the same, (ii) the indemnifying  party fails to assume the defense
of such action with counsel  satisfactory to the indemnified party, or (iii) the
indemnified  party has been advised by counsel  that one or more legal  defenses
may be available to the indemnifying  party that may be contrary to the interest
of the indemnified party, in which case the indemnifying party shall be entitled
to assume the defense of such action notwithstanding its obligation to bear fees
and  expenses of such  counsel.  No  indemnifying  party shall be liable for any
settlement  entered  into  without  its  consent,   which  consent  may  not  be
unreasonably withheld.

         If  the  indemnification  provided  for  in  this  subparagraph  (e) is
unavailable  to a party  otherwise  entitled to be indemnified in respect of any
expenses,  losses,  claims,  damages or liabilities referred to herein, then the
indemnifying  party, in lieu of indemnifying such party otherwise entitled to be
indemnified,  shall contribute to the amount paid or payable by such party to be
indemnified as a result of such expenses, losses, claims, damages or liabilities
in such proportion as is appropriate to reflect the relative  benefits  received
by Issuer,  the selling  shareholders and the underwriters  from the offering of
the securities and also the relative fault of Issuer,  the selling  shareholders
and the  underwriters  in  connection  with the  statements  or omissions  which
resulted in such expenses,  losses, claims,  damages or liabilities,  as well as
any other  relevant  equitable  considerations.  The amount paid or payable by a
party as a result of the  expenses,  losses,  claims,  damages  and  liabilities
referred to above shall be deemed to include any legal or other fees or expenses
reasonably  incurred by such party in connection with investigating or defending
any action or claim; provided, however, that in no case shall the holders of the
Option Shares be responsible,  in the aggregate, for any amount in excess of the
net  offering  proceeds  attributable  to  its  Option  Shares  included  in the
offering. No person guilty of fraudulent  misrepresentation  (within the meaning
of Section 11 (f) of the Securities Act) shall be entitled to contribution  from
any  person  who  was  not  guilty  of such  fraudulent  misrepresentation.  Any
obligation by any holder to indemnify  shall be several and not joint with other
holders.

         In connection with any registration pursuant to subparagraph (a) or (b)
above,  Issuer and each holder of any Option Shares  (other than Grantee)  shall
enter  into an  agreement  containing  the  indemnification  provisions  of this
subparagraph (e).

         (f)  Miscellaneous  Reporting.  Issuer shall comply with all  reporting
requirements and will do all such other things as may be necessary to permit the
expeditious  sale at any time of any  Option  Shares by the  holder  thereof  in
accordance  with  and  to  the  extent  permitted  by  any  rule  or  regulation




                                      C-13

<PAGE>



or  regulation  promulgated  by the SEC from time to time.  Issuer  shall at its
expense provide the holder of any Option Shares with any  information  necessary
in connection with the completion and filing of any reports or forms required to
be filed by them under the  Securities  Act or the  Exchange  Act,  or  required
pursuant to any state securities laws or the rules of any stock exchange.

         (g) Issue Taxes. Issuer will pay all stamp taxes in connection with the
issuance and the sale of the Option Shares and in  connection  with the exercise
of the Option,  and will save Grantee harmless,  without  limitation as to time,
against any and all liabilities, with respect to all such taxes.

10.  Quotation;  Listing.  If Issuer Common Stock or any other  securities to be
acquired  upon  exercise  of the Option are then  authorized  for  quotation  or
trading or listing on any national  securities  exchange (including the NASDAQ -
National Market System) or any securities exchange,  Issuer, upon the request of
Grantee,  will  promptly  file an  application,  if required,  to authorize  for
quotation  or  trading or listing  the  shares of Issuer  Common  Stock or other
securities  to be  acquired  upon  exercise  of the Option on any such  national
securities  exchange  and will use its  best  efforts  to  obtain  approval,  if
required, of such quotation or listing as soon as practicable.

11.  Division of Option.  This  Agreement  (and the Option  granted  hereby) are
exchangeable,  without expense, at the option of Grantee,  upon presentation and
surrender  of this  Agreement  at the  principal  office  of  Issuer  for  other
Agreements providing for Options of different denominations entitling the holder
thereof to purchase in the  aggregate the same number of shares of Issuer Common
Stock purchasable  hereunder.  The terms "Agreement" and "Option" as used herein
include any other  Agreements and related  Options for which this Agreement (and
the Option granted hereby) may be exchanged.  Upon receipt by Issuer of evidence
reasonably  satisfactory to it of the loss, theft,  destruction or mutilation of
this Agreement,  and (in the case of loss,  theft, or destruction) of reasonably
satisfactory  indemnification,  and  upon  surrender  and  cancellation  of this
Agreement, if mutilated, Issuer will execute and deliver a new Agreement of.
like tenor and date.

12.      Miscellaneous.

         (a)  Expenses.  Except  as  otherwise  provided  in  Section  9 of this
Agreement,  each of the parties hereto shall bear and pay all costs and expenses
incurred by it or on its behalf in connection with the transactions contemplated
hereunder,  including  fees  and  expenses  of its  own  financial  consultants,
investment bankers, accountants and counsel.

         (b) Waiver and Amendment. Any provision of this Agreement may be waived
at any time by the party that is entitled to the  benefits of such  provision if
such waiver is in writing. This Agreement may not be modified,  amended, altered
or  supplemented  except upon the execution and delivery of a written  agreement
executed by the parties hereto.

         (c) Entire Agreement;  No Third Party Beneficiary;  Severability.  This
Agreement,  together  with the  Merger  Agreement  and the other  documents  and
instruments  referred  to herein and  therein,  between  Grantee  and Issuer (a)
constitutes  the  entire  agreement  and  supersedes  all  prior  agreements and




                                      C-14

<PAGE>



understandings,  both written and oral,  between the parties with respect to the
subject  matter  hereof and (b) is not  intended to confer upon any person other
than the parties hereto (other than any  transferees of the Option Shares or any
permitted  transferee of this Agreement pursuant to Section 12(h)) any rights or
remedies  hereunder.  If any term,  provision,  covenant or  restriction of this
Agreement  is held by a court of  competent  jurisdiction  or a federal or state
regulatory  agency to be invalid,  void or  unenforceable,  the remainder of the
terms, provisions,  covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected,  impaired or invalidated.
If for any reason such court or  regulatory  agency  determines  that the Option
does not permit  Grantee to acquire,  or does not require  Issuer to repurchase,
the full number of shares of Issuer Common Stock as provided in Sections 3 and 8
(as  adjusted  pursuant to Section 7), it is the express  intention of Issuer to
allow Grantee to acquire or to require  Issuer to repurchase  such lesser number
of shares as may be permissible without any amendment or modification hereof.

         (d) Governing  Law. This  Agreement  shall be governed and construed in
accordance  with  the laws of the  State of  California  without  regard  to any
applicable conflicts of law rules.

         (e) Descriptive  Heading. The descriptive headings contained herein are
for convenience of reference only and shall not affect in any way the meaning or
interpretation of this Agreement.

         (f) Notices. All notices and other communications hereunder shall be in
writing and shall be deemed  given if  delivered  personally,  telecopied  (with
confirmation)  or  mailed  by  registered  or  certified  mail  (return  receipt
requested)  to the parties at the  following  addresses (or a such other address
for a party as shall be specified by like notice):

         IF TO ISSUER TO:

                           Santa Barbara Bancorp
                           1021 Anacapa Street
                           Santa Barbara, California 93101-2036
                           Telecopy: (804) 564-6293
                           Attention:  Mr. David W. Spainhour,
                                          President and Chief Executive Officer

         WITH A COPY TO:

                           Mr. Charles E. Greef
                           Mr. Peter G. Weinstock
                           Jenkens & Gilchrist,
                           a Professional Corporation
                           1445 Ross Avenue, Suite 3200
                           Dallas, Texas  75202-2799
                           Telecopy:  (214) 855-4300





                                      C-15

<PAGE>



         IF TO GRANTEE TO:

                           Pacific Capital Bancorp
                           307 Main Street
                           Salinas, California 93901
                           Telecopy: (408) 646-9748
                           Attention:  Mr. Clayton C. Larson,
                                       President and Chief Administrative
                                       Officer

         WITH A COPY TO:

                           Mr. James E. Topinka
                           Preston Gates & Ellis LLP
                           One Maritime Plaza
                           Suite 2400
                           San Francisco, California 94111
                           Telecopy: (415) 788-8819

         (g)  Counterparts.  This  Agreement  and any  amendments  hereto may be
executed in multiple counterparts, each of which shall be considered one and the
same  agreement  and shall become  effective  when both  counterparts  have been
signed,   it  being  understood  that  both  parties  need  not  sign  the  same
counterpart.

         (h) Assignment. Neither this Agreement nor any of the rights, interests
or  obligations  hereunder  or under the Option  shall be assigned by any of the
parties  hereto  (whether by  operation of law or  otherwise)  without the prior
written  consent  of the other  party,  except  that  Grantee  may  assign  this
Agreement  to a wholly  owned  subsidiary  of Grantee and Grantee may assign its
rights  hereunder in whole or in part after the occurrence of a Purchase  Event.
Subject to the preceding  sentence,  this Agreement shall be binding upon, inure
to the  benefit  of and be  enforceable  by the  parties  and  their  respective
successors and assigns.

         (i) Further  Assurances.  In the event of any exercise of the Option by
Grantee,  Issuer and Grantee shall  execute and deliver all other  documents and
instruments and take all other action that may be reasonably  necessary in order
to consummate the transactions provided for by such exercise.

         (j) Specific Performance.  The parties hereto agree that this Agreement
may be enforced by either party through specific performance,  injunctive relief
and other equitable relief.  Both parties further agree to waive any requirement
for the securing or posting of any bond in connection  with the obtaining of any
such equitable relief and that this provision is without  prejudice to any other
rights  that the  parties  hereto  may  have for any  failure  to  perform  this
Agreement.

                                            [Signatures Follow]




                                      C-16

<PAGE>



         IN WITNESS WHEREOF, Issuer and Grantee have caused this Agreement to be
signed by their respective officers thereunto duly authorized, all as of the day
and year first written above.


                                    PACIFIC CAPITAL BANCORP


                                    By:  /s/  D. Vernon Horton
                                        ----------------------------------------
                                         D. Vernon Horton, Chairman of the Board
                                         and Chief Executive Officer


                               and


                                    By:  /s/  Clayton L. Larson
                                        ----------------------------------------
                                        Clayton C. Larson, President and
                                        Chief Administrative Officer


                                    SANTA BARBARA BANCORP




                                    By:  /s/ William S. Thomas, Jr.
                                        ----------------------------------------
                                        William S. Thomas, Jr., Vice Chairman
                                        and Chief Operating Officer

                               and


                                    By:  /s/ Kent M. Vining
                                        ----------------------------------------
                                        Kent M. Vining, Senior Vice President




                                      C-17

<PAGE>



                                                                      APPENDIX D
                                                                      ----------

                         PACIFIC STOCK OPTION AGREEMENT

         This   STOCK   OPTION   AGREEMENT,   dated   as  of   July   20,   1998
(the "Agreement"), is by and  between  Pacific  Capital  Bancorp,  a  California
corporation  ("Issuer"),  and Santa Barbara  Bancorp,  a California  corporation
("Grantee").

         WHEREAS,  Issuer and Grantee have entered into an Agreement and Plan of
Reorganization dated as of July 20, 1998 (the "Merger Agreement") providing for,
among other things, the merger of Issuer with and into Grantee,  with Grantee as
the surviving corporation; and

         WHEREAS,  as a condition and  inducement to Grantee's  execution of the
Merger Agreement, Grantee has required that Issuer agree, and Issuer has agreed,
to grant Grantee the Option (as defined below);

         NOW,  THEREFORE,  in  consideration of the foregoing and the respective
representations,  warranties,  covenants and  agreements set forth herein and in
the Merger  Agreement,  and  intending to be legally  bound  hereby,  Issuer and
Grantee agree as follows:

1. Defined Terms.  Capitalized terms which are used but not defined herein shall
have the meanings ascribed to such terms in the Merger Agreement.

2. Grant of Option. Subject to the terms and conditions set forth herein, Issuer
hereby grants to Grantee an irrevocable  option (the "Option") to purchase up to
878,269  shares (the "Option  Shares") of common  stock of Issuer,  no par value
("Issuer  Common  Stock"),  at a purchase  price per Option Share (the "Purchase
Price") equal to $58.00; provided, however, that in no event shall the number of
shares of Issuer Common Stock for which this Option is exercisable  exceed 19.5%
of the Issuer's  issued and  outstanding  shares of Common Stock.  The number of
shares of Issuer  Common  Stock that may be  received  upon the  exercise of the
Option and the Purchase Price are subject to adjustment as herein set forth.

3.         Exercise of Option.

         (a) Provided  that (i) Grantee  shall not be in material  breach of the
agreements or covenants contained in this Agreement or the Merger Agreement, and
(ii) no preliminary or permanent  injunction or other order against the delivery
of the Option Shares issued by any court of competent jurisdiction in the United
States shall be in effect, Grantee may exercise the Option, in whole or in part,
at any time and from  time to time,  but  only  following  the  occurrence  of a
Purchase Event (as defined below);  provided that the Option shall terminate and
be of no further  force or effect upon the earlier to occur of (A) the Effective
Time of the Merger,  (B) the  termination of the Merger  Agreement in accordance
with  the  terms  thereof  before  the  occurrence  of  a  Purchase  Event  or a
Preliminary  Purchase Event (other than a termination of the Merger Agreement by
Grantee pursuant to Section 9.02(e),  9.02(f) or 9.02(n) of the Merger Agreement




                                       D-1

<PAGE>



(an "Issuer Termination")); (C) the close of business on the 365th day after the
occurrence of an Issuer Termination;  and (D) the close of business on the 365th
day after termination of the Merger Agreement (other than an Issuer Termination)
following the  occurrence of a Purchase  Event or a Preliminary  Purchase  Event
(hereinafter sometimes referred to as the "Termination Date"); provided that any
purchase of Option  Shares upon the  exercise of the Option  shall be subject to
compliance with applicable law, including,  without limitation, the Bank Holding
Company  Act of  1956  (the  "BHCA"),  and any  other  required  consent  of any
regulatory authority.  The rights set forth in Section 8 of this Agreement shall
terminate  when the right to  exercise  the Option  terminates  (other than as a
result of a complete exercise of the Option) as set forth herein.

         (b)      As used herein, a "Purchase Event" means  any of the following
events:

                    (i) without  Grantee's prior written  consent,  Issuer shall
           have authorized, recommended, publicly proposed or publicly announced
           an intention to authorize,  recommend or propose,  or entered into an
           agreement  with any person  (other than Grantee or any  subsidiary of
           Grantee) to effect an Acquisition  Transaction (as defined below). As
           used herein,  the term "Acquisition  Transaction"  shall mean (A) any
           tender offer for more than 50% of the  outstanding  shares of Issuer,
           (B) any  merger or  consolidation  of Issuer  with or into any entity
           other than Grantee or a subsidiary of Grantee, (C) any sale of all or
           substantially all of the assets of Issuer,  (D) any reorganization of
           Issuer or other  transaction  that  results or when  completed  would
           result in a disposition of substantially all of the assets of Issuer,
           or (E) the issuance, sale or other disposition of shares representing
           more than 50% of the shares of Issuer.

                    (ii) any person  (other than  Grantee or any  subsidiary  of
           Grantee)  shall have acquired  beneficial  ownership (as such term is
           defined in Rule 13d-3 promulgated  under the Securities  Exchange Act
           of 1934, as amended (the "Exchange Act")) of, or the right to acquire
           beneficial  ownership  of, or any  "group"  (as such term is  defined
           under the  Exchange  Act) shall have been formed  which  beneficially
           owns or has the right to acquire  beneficial  ownership  of more than
           50% of the shares of Issuer.

                  (c) As used herein,  a "Preliminary  Purchase Event" means any
of the following events:

                  (i) any  person  (other  than  Grantee  or any  subsidiary  of
           Grantee)  shall have commenced (as such term is defined in Rule 14d-2
           under the Exchange Act) or shall have filed a registration  statement
           under the Securities Act of 1933, as amended (the "Securities  Act"),
           with  respect to a tender  offer or exchange  offer to  purchase  any
           shares of Issuer Common Stock such that,  upon  consummation  of such
           offer,  such  person  would own or control  more than 50% of the then
           outstanding  shares  of  Issuer  Common  Stock  (such an offer  being
           referred  to  herein  as a "Tender  Offer"  or an  "Exchange  Offer",
           respectively); or

                    (ii) the  holders  of  Issuer  Common  Stock  shall not have
           approved the Merger  Agreement in accordance with all applicable law,
           the  Articles of  Incorporation  or Bylaws of the Issuer or any other
           agreement or, contract or law to  which such holders of Issuer Common




                                       D-2

<PAGE>



           Stock are subject,  including, if applicable,  but not limited to, at
           the meeting of  such shareholders held  for the purpose  of voting on
           the   Merger  Agreement,  such  meeting  shall  not  have  been  held
           or shall  have  been  canceled  prior to  termination  of the  Merger
           Agreement  or Issuer's  Board of  Directors  shall have  withdrawn or
           modified  in a  manner  adverse  to  Grantee  the  recommendation  of
           Issuer's Board of Directors with respect to the Merger Agreement,  in
           each  case,  after it shall  have been  publicly  announced  that any
           person (other than Grantee or any  subsidiary of Grantee)  shall have
           (A) made,  or disclosed an intention to make, a proposal to engage in
           an Acquisition  Transaction,  (B) commenced a Tender Offer or filed a
           registration  statement  under the  Securities Act with respect to an
           Exchange  Offer or (C)  filed an  application  (or  given a  notice),
           whether in draft or final form, under applicable banking or corporate
           law or any other applicable law, including,  without limitation,  the
           BHCA, seeking approval to engage in an Acquisition Transaction.

As used in this Agreement, "person" shall have the meaning specified in Sections
3(a)(9) and 13(d)(3) of the Exchange Act.

         (d) Issuer shall notify  Grantee  promptly in writing of the occurrence
of any Preliminary  Purchase Event or Purchase  Event, it being  understood that
the giving of such  notice by Issuer  shall not be a  condition  to the right of
Grantee to exercise the Option.

         (e) In the event Grantee  wishes to exercise the Option,  it shall send
to Issuer a written  notice (the date of which being  herein  referred to as the
"Notice  Date")  specifying  (i) the total number of Option Shares it intends to
purchase  pursuant to such  exercise  and (ii) subject to the next  sentence,  a
place and date not earlier than three (3)  business  days nor later than fifteen
(15) business days after the Notice Date for the closing (the "Closing") of such
purchase  (the  "Closing  Date").  If prior  notification  to or  consent of any
regulatory  authority  is  required  in  connection  with such  purchase,  then,
notwithstanding  the prior occurrence of the Termination  Date, the Closing Date
shall be  extended  for such period as shall be  necessary  to enable such prior
notification  or consent to occur or to be obtained  (and the  expiration of any
mandatory waiting period). Issuer shall co-operate with Grantee in the filing of
any  applications  or documents  necessary to obtain any required  consent or in
connection  with any required  prior  notification  and the Closing  shall occur
immediately  following  receipt of such consent (or the filing of any such prior
notification and the expiration of any mandatory waiting periods).

4.         Payment and Delivery of Certificates.

         (a)  On  each  Closing  Date,  Grantee  shall  (i)  pay to  Issuer,  in
immediately  available  funds by wire  transfer to a bank account  designated by
Issuer, an amount equal to the Purchase Price multiplied by the number of Option
Shares to be purchased on such Closing Date, and (ii) present and surrender this
Agreement to the Issuer at the address of the Issuer specified herein.

         (b) At each Closing,  simultaneously  with the delivery of  immediately
available  funds and  surrender  of this  Agreement  as provided in Section 4(a)
above,  (i) Issuer shall  deliver to Grantee (A) a certificate  or  certificates
representing the Option  Shares to be  purchased at such  Closing,  which Option




                                       D-3

<PAGE>



Shares shall be free and clear of all liens, claims, charges and encumbrances of
any kind whatsoever and subject to  no pre-emptive rights, and (B) if the Option
is exercised in  part only, a  new Stock Option  Agreement, executed by  Issuer,
with the same  terms as this  Agreement evidencing  the  right to  purchase  the
balance of the  shares of Issuer  Common Stock purchasable  hereunder,  and (ii)
Grantee shall deliver  to Issuer a  letter agreeing that Grantee shall not offer
to sell or  otherwise dispose of  such Option Shares  in violation of applicable
federal and state law or of the provisions of this Agreement.

         (c) In addition to any other legend that is required by applicable law,
certificates  for the Option Shares  delivered at each Closing shall be endorsed
with a restrictive legend which shall read substantially as follows:

THE  TRANSFER  OF THE  STOCK  REPRESENTED  BY THIS  CERTIFICATE  IS  SUBJECT  TO
RESTRICTIONS  ARISING UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND PURSUANT
TO THE TERMS OF A STOCK  OPTION  AGREEMENT  DATED AS OF JULY 20, 1998. A COPY OF
SUCH AGREEMENT WILL BE PROVIDED TO THE HOLDER HEREOF WITHOUT CHARGE UPON RECEIPT
BY THE ISSUER OF A WRITTEN REQUEST THEREFOR.

It is  understood  and agreed that the above legend shall be removed by delivery
of substitute  certificates  without such legend if Grantee shall have delivered
to Issuer an opinion of counsel in form and substance reasonably satisfactory to
Issuer and its  counsel,  to the effect  that such  legend is not  required  for
purposes of the Securities Act.

         (d) Upon the  giving by  Grantee  to Issuer  of the  written  notice of
exercise of the Option  provided for under Section 3(e) of this  Agreement,  the
tender of the applicable  Purchase Price in immediately  available funds and the
tender of this Agreement to Issuer,  Grantee shall be deemed to be the holder of
record  of the  shares of  Issuer  Common  Stock  issuable  upon such  exercise,
notwithstanding  that the stock transfer books of Issuer shall then be closed or
that certificates representing such shares of Issuer Common Stock shall not then
be actually delivered to Grantee. Issuer shall pay all expenses, and any and all
United  States  federal,  state,  and local taxes and other  charges that may be
payable in  connection  with the  preparation,  issuance  and  delivery of stock
certificates  under  this  Section  in the  name  of  Grantee  or its  assignee,
transferee, or designee.

         (e) Issuer  agrees (i) that it shall at all times  maintain,  free from
pre-emptive  rights,  sufficient  authorized but unissued or treasury  shares of
Issuer  Common  Stock so that the Option  may be  exercised  without  additional
authorization  of Issuer Common Stock after giving effect to all other  options,
warrants,  convertible  securities  and other rights to purchase  Issuer  Common
Stock,  (ii) that it will not, by amendment to its Articles of  Incorporation or
Bylaws or through. reorganization, consolidation, merger, dissolution or sale of
assets,  or by any other voluntary act, avoid or seek to avoid the observance or
performance of any of the covenants,  stipulations  or conditions to be observed
or performed hereunder by Issuer,  (iii) promptly to take all action as may from
time to time be required  (including (A) complying (if applicable)  with all pre
merger notification,  reporting and waiting period requirements  specified in 15
U.S.C.  ss. 18a and  regulations  promulgated  thereunder  and (B) in the event,
under any federal  or state law,  prior notice to  or consent of  any regulatory


                                       D-4

<PAGE>



authority is necessary before the Option may be exercised co-operating fully
with Grantee in preparing any required application or notice and providing  such
information to such regulatory authority as such regulatory authority may
require) in order to permit Grantee to exercise the Option and Issuer duly and
effectively to issue shares of Issuer Common Stock pursuant hereto, and (iv)
promptly to take all action provided herein to protect the rights of Grantee
against dilution.

5.       Representations and Warranties of Issuer.  Issuer hereby represents and
         warrants to Grantee as follows:

         (a) Due  Authorization.  Issuer has all requisite  corporate  power and
authority to enter into this Agreement and, subject to any approvals referred to
herein, to consummate the transactions  contemplated  hereby.  The execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been duly authorized by all necessary  corporate  action on the part
of Issuer. This Agreement has been duly executed and delivered by Issuer.

         (b)  Authorized  Stock.  Issuer has taken all  necessary  corporate and
other  action to  authorize  and reserve and to permit it to issue,  and, at all
times from the date hereof until the  obligation to deliver  Issuer Common Stock
upon the exercise of the Option  terminates,  will have  reserved for  issuance,
upon  exercise  of the  Option,  the  number of shares  of Issuer  Common  Stock
necessary for Grantee to exercise the Option, and Issuer will take all necessary
corporate action to authorize and reserve for issuance all additional  shares of
Issuer Common Stock or other  securities which may be issued pursuant to Section
7 of this  Agreement  upon  exercise of the Option.  The shares of Issuer Common
Stock to be issued upon due  exercise of the Option,  including  all  additional
shares of Issuer Common Stock or other securities which may be issuable pursuant
to Section 7 of this Agreement, upon issuance pursuant hereto, shall be duly and
validly issued,  fully paid and  nonassessable,  and shall be delivered free and
clear of all  liens,  claims,  charges  and  encumbrances  of any kind or nature
whatsoever, including any pre-emptive right of any shareholder of Issuer.

         (c) No Violation.  The execution  and delivery of this  Agreement  does
not, and the  consummation  of the  transactions  contemplated  hereby will not,
conflict  with,  or result in any  violation  pursuant to any  provisions of the
Articles of  Incorporation  or By-laws of Issuer or,  subject to  obtaining  any
approvals or consents  contemplated hereby,  result in any violation of any loan
or credit agreement, note, mortgage,  indenture, lease, plan or other agreement,
obligation, instrument, permit, concession, franchise, license, judgment, order,
decree, statute, law, ordinance,  rule or regulation applicable to Issuer or its
properties or assets which violation would have a Material Adverse Effect on the
Issuer.

6.       Representations  and Warranties of Grantee.  Grantee hereby  represents
         and warrants to Issuer that:

         (a) Due Authorization.  Grantee  has all requisite  corporate power and
authority to enter to this  Agreement and, subject to any  approvals or consents
referred to herein,  to consummate  the  transactions contemplated  hereby.  The


                                       D-5

<PAGE>



execution and delivery  of this Agreement  and  the consummation  of  the trans-
actions contemplated hereby have been duly authorized by all necessary corporate
action on the  part of  Grantee. This  Agreement  has  been  duly  executed  and
delivered by Grantee.

         (b) Purchase Not for  Distribution.  This Option is not being,  and any
Option  Shares or other  securities  acquired  by Grantee  upon  exercise of the
Option will not be, acquired with a view to the public distribution  thereof and
will not be  transferred  or  otherwise  disposed  of  except  in a  transaction
registered or exempt from registration under the Securities Act.

7.       Adjustment upon Changes in Capitalization, etc.

         (a) In the event of any  change in Issuer  Common  Stock by reason of a
stock dividend stock split, split-up, recapitalization, combination, exchange of
shares or  similar  transaction,  the type and  number  of shares or  securities
subject to the  Option,  and the  Purchase  Price  therefor,  shall be  adjusted
appropriately,  and proper  provision shall be made in the agreements  governing
such transaction so that Grantee shall receive, upon exercise of the Option, the
number and class of shares or other  securities  or property  that Grantee would
have received in respect of Issuer Common Stock if the Option had been exercised
immediately prior to such event, or the record date therefor, as applicable.  If
any  additional  shares of Issuer Common Stock are issued after the date of this
Agreement  (other than pursuant to an event  described in the first  sentence of
this Section  7(a)),  the number of shares of Issuer Common Stock subject to the
Option shall be adjusted so that, after such issuance, the Option, together with
any shares of Issuer Common Stock  previously  issued  pursuant  hereto,  equals
19.5%  of  the  number  of  shares  of  Issuer  Common  Stock  then  issued  and
outstanding,  without giving effect to any shares subject to or issued  pursuant
to the Option.

         (b) In the event that,  prior to the  Termination  Date,  Issuer  shall
enter in an agreement:

                  (i) to consolidate  with or merge into any person,  other than
         Grantee or one of its subsidiaries,  and shall not be the continuing or
         surviving  corporation of such consolidation or merger;  (ii) to permit
         any person,  other than  Grantee or one of its  subsidiaries,  to merge
         into  Issuer  where  Issuer  shall  be  the   continuing  or  surviving
         corporation,  but, in connection with such merger, the then outstanding
         shares of Issuer  Common Stock shall be changed  into or exchanged  for
         stock or other  securities of Issuer or any other person or cash or any
         other  property  or the  outstanding  shares  of  Issuer  Common  Stock
         immediately prior to such merger shall after such merger represent less
         than 50% of the outstanding  shares and share equivalents of the merged
         company; or (iii) to  sell or otherwise  transfer all  or substantially
         all of its assets to any  person,  other  than  Grantee  or  one of its
         subsidiaries, then, and in each such case, the agreement governing such
         transaction shall make proper provisions so that, upon the consummation
         of any such  transaction  and upon the terms and  conditions  set forth
         herein,  the  Option,  notwithstanding  the fact that as of the date of
         consummation  of such  transaction  the  Termination  Date  shall  have
         occurred,  shall be converted  into,  or exchanged  for, an option (the
         "Substitute  Option"),  at the  election of Grantee,  of either (x) the
         Acquiring Corporation  (as defined below), (y) any person that controls




                                       D-6

<PAGE>



         the Acquiring Corporation, or (z) in the case of a merger  described in
         clause (ii), the Issuer (in each case, such entity being referred to as
         the "Substitute Option Issuer").

         (c) The  Substitute  Option  shall have the same  terms as the  Option,
provided  that, if the terms of the  Substitute  Option  cannot,  because of the
applicability of any law or regulation, have the exact terms as the Option, such
terms  shall be as similar as  possible  and in no event  less  advantageous  to
Grantee.  The  Substitute  Option Issuer shall also enter into an agreement with
the then-holder or holders of the Substitute  Option in  substantially  the same
form as this Agreement, which shall be applicable to the Substitute Option.

         (d) The  Substitute  Option  shall be  exercisable  for such  number of
shares of the Substitute  Common Stock (as  hereinafter  defined) as is equal to
the Assigned Value (as hereinafter  defined)  multiplied by the number of shares
of the Issuer  Common  Stock for which the Option was  theretofore  exercisable,
divided by the Average Price (as  hereinafter  defined).  The exercise  price of
each share of  Substitute  Common Stock  subject to the  Substitute  Option (the
"Substitute  Purchase Price") shall be equal to the Purchase Price multiplied by
a fraction in which the  numerator is the number of shares of the Issuer  Common
Stock for which the Option was  theretofore  exercisable  and the denominator is
the number of shares for which the Substitute Option is exercisable.

         (e) The following terms have the meanings indicated:

                    (i) "Acquiring Corporation" shall mean (x) the continuing or
           surviving  corporation of a  consolidation  or merger with respect to
           which  Issuer is one of the parties (if other than  Issuer),  (y) the
           Issuer in a  consolidation  or  merger or in which the  Issuer is the
           continuing or surviving corporation, and (z) the transferee of all or
           any substantial part of the Issuer's assets.

                    (ii)  "Assigned  Value"  shall  mean the  highest of (x) the
           price per share of the Issuer Common Stock at which a Tender Offer or
           Exchange  Offer  therefor  has been made by any  person  (other  than
           Grantee),  (y) the price per share of the Issuer  Common  Stock to be
           paid by any person (other than the Grantee)  pursuant to an agreement
           with Issuer,  or (z) the highest last sales price per share of Issuer
           Common Stock quoted on any national  securities  exchange  (including
           the NASDAQ - National  Market  System) (or if Issuer  Common Stock is
           not quoted on any such national securities exchange,  the highest bid
           price per share on any day as quoted on the principal  trading market
           or securities exchange on which such shares are traded as reported by
           a recognized  source chosen by Grantee)  within the six-month  period
           immediately  preceding the agreement described in Section 7(b) above;
           provided,  however,  that in the  event of a sale of less than all of
           Issuer's  assets,  the  Assigned  Value shall be the sum of the price
           paid in such sale for such assets and the current market value of the
           remaining  assets of Issuer as determined by a nationally  recognized
           investment banking firm selected by Grantee, divided by the number of
           shares of the Issuer  Common  Stock  outstanding  at the time of such
           sale.  In the event a Tender Offer or Exchange  Offer is made for the
           Issuer Common Stock  or an agreement  is entered into for a merger or




                                       D-7

<PAGE>



           consolidation involving consideration  other than cash,  the value of
           the securities or other property issuable or deliverable  in exchange
           for the  Issuer  Common Stock  shall be  determined  by a  nationally
           recognized investment banking  firm  mutually   selected  by  Grantee
           and Issuer (or  if applicable, Acquiring  Corporation), provided that
           if a mutual  selection cannot be  made as to  such investment banking
           firm, it shall be selected by Grantee.

                   (iii) "Average Price" shall mean the average last sales price
         of a share of the Substitute  Common Stock for the one year immediately
         preceding the consolidation,  merger or sale in question,  as quoted on
         any  national  securities  exchange  (including  the  NASDAQ - National
         Market System), and if the Substitute Common Stock is not quoted on any
         such national securities exchange, the average of the bid price for the
         one year period  described  above,  as quoted on the principal  trading
         market or securities  exchange on which such Substitute Common Stock is
         traded, as reported by a recognized  source, as chosen by Grantee,  but
         in no event  higher than the last sales  price or closing  price or the
         bid  price of the  shares  of the  Substitute  Common  Stock on the day
         preceding such consolidation,  merger, or sale; provided that if Issuer
         is the issuer of the  Substitute  Option,  the  Average  Price shall be
         computed with respect to a share of common stock issued by Issuer,  the
         person  merging  into  Issuer or by any  company  which  controls or is
         controlled by such person, as Grantee may elect.

                  (iv)  "Substitute  Common  Stock"  shall mean the common stock
         issued  by the  Substitute  Option  Issuer  upon  the  exercise  of the
         Substitute Option.

         (f) In no event pursuant to any of the foregoing  paragraphs  shall the
Substitute  Option be  exercisable  for more than 19.5% of the  aggregate of the
shares of the  Substitute  Common  Stock  outstanding  prior to  exercise of the
Substitute  Option. In the event that the Substitute Option would be exercisable
for more than  19.5% of the  aggregate  of the shares of the  Substitute  Common
Stock but for this clause (f), the  Substitute  Option  Issuer shall make a cash
payment to Grantee equal to the amount of (i) the value of the Substitute Option
without giving effect to the limitation in this clause (f) in excess of (ii) the
value of the  Substitute  Option after giving  effect to the  limitation in this
clause  (f).  This  difference  in value  shall be  determined  by a  nationally
recognized investment banking firm selected by Grantee.

         (g) Issuer shall not enter into any transaction described in subsection
(b) of this  Section 7 unless the  Acquiring  Corporation  and any  person  that
controls the Acquiring  Corporation assumes in writing all of the obligations of
Issuer  hereunder  and takes all other actions that may be necessary so that the
provisions of this Section 7 are given full force and effect (including, without
limitation,  any action that may be necessary  so that the shares of  Substitute
Common  Stock are in no way  distinguished  from or have lesser  economic  value
(other than any diminution  resulting  from the fact that the Substitute  Common
Stock is  "restricted  securities"  within  the  meaning  of Rule 144  under the
Securities  Act) than  other  shares of common  stock  issued by the  Substitute
Option Issuer).





                                       D-8

<PAGE>



         (h)  The  provisions  of  Sections  8,  9  and  10  shall  apply,  with
appropriate  adjustments,  to  any  securities  for  which  the  Option  becomes
exercisable  pursuant to this Section 7 and, as  applicable,  references in such
sections to "Issuer,"  "Option,"  "Purchase  Price," and "Issuer  Common  Stock"
shall be deemed to be  references to  "Substitute  Option  Issuer,"  "Substitute
Option,  "  "Substitute  Purchase  Price,  " and  "Substitute  Common  Stock,  "
respectively.

8.       Repurchase at the Option of Grantee.

         (a) Subject to the last sentence of Section 3(a) of this Agreement,  at
the request of Grantee at any time  commencing  upon the first  occurrence  of a
Repurchase  Event  (as  defined  in  Section  8(d))  and  ending at the close of
business 365 days  thereafter,  Issuer shall  repurchase from Grantee the Option
and all shares of Issuer Common Stock purchased by Grantee  pursuant hereto with
respect  to which  Grantee  then  has  beneficial  ownership.  The date on which
Grantee exercises its rights under this Section 8 is referred to as the "Request
Date". Such repurchase shall be at an aggregate price (the "Section 8 Repurchase
Consideration") equal to the sum of:

                  (i) the  aggregate  Purchase  Price  paid by  Grantee  for any
         shares of Issuer Common Stock acquired  pursuant to complete or partial
         exercise  of  the  Option  with  respect  to  which  Grantee  then  has
         beneficial ownership;

                  (ii) the  excess,  if any,  of (x) the  Applicable  Price  (as
         defined  below)  for each  share of Issuer  Common  Stock  over (y) the
         Purchase  Price   (subject  to  adjustment   pursuant  to  Section  7),
         multiplied  by the number of shares of Issuer Common Stock with respect
         to which the Option has not been exercised; and

                  (iii) the  excess,  if any, of the  Applicable  Price over the
         Purchase Price (subject to adjustment  pursuant to Section 7) paid (or,
         in the case of Option  Shares with respect to which the Option has been
         exercised  but the Closing Date has not  occurred,  payable) by Grantee
         for each share of Issuer  Common Stock with respect to which the Option
         has  been  exercised  and  with  respect  to  which  Grantee  then  has
         beneficial ownership, multiplied by the number of such shares.

         (b) If Grantee exercises its rights under this Section 8, Issuer shall,
within  ten (10)  business  days  after  the  Request  Date,  pay the  Section 8
Repurchase   Consideration  to  Grantee  in  immediately  available  funds,  and
contemporaneously with such payment Grantee shall surrender to Issuer the Option
and the  certificates  evidencing  the shares of Issuer  Common Stock  purchased
thereunder  with respect to which  Grantee then has  beneficial  ownership,  and
Grantee shall warrant that it has sole record and  beneficial  ownership of such
shares and that the same are then free and clear of all liens,  claims,  charges
and encumbrances of any kind whatsoever.  Notwithstanding the foregoing,  to the
extent that prior  notification  to or consent of any  regulatory  authority  is
required in  connection  with the payment of all or any portion of the Section 8
Repurchase  Consideration,  or  Issuer is  prohibited  under  applicable  law or
regulation,  or as a consequence of administrative policy, from repurchasing the
Option  and/or the Option  Shares in full,  Issuer shall  immediately  so notify
Grantee and thereafter deliver from time to time, and as permitted by applicable
law or regulation,  that portion of the Section 8 Repurchase  Consideration that





                                       D-9

<PAGE>



it is not then so  prohibited  from paying  within five  business days after the
date on which Issuer is no longer prohibited;  provided, however, that if Issuer
at  any  time  is  prohibited  under  applicable  law  or  regulation,  or  as a
consequence of administrative policy, from delivering to the Grantee the Section
8 Repurchase  Consideration,  in full (and Issuer  hereby  undertakes to use its
best efforts to obtain all required  consents of regulatory  authorities  and to
file any required notices as promptly as practicable in order to accomplish such
repurchase),  the Grantee  may, at its  option,  revoke its request  that Issuer
repurchase  the Option or the Option  Shares either in whole or to the extent of
the  prohibition,  whereupon,  in the latter  case,  Issuer  shall  promptly (i)
deliver to the Grantee that  portion of the Section 8  Repurchase  Consideration
that Issuer is not prohibited from delivering;  and (ii) deliver, to the Grantee
either  (A) a new  Stock  Option  Agreement  evidencing  the  right of Issuer to
purchase  that  number of shares of Common  Stock  obtained by  multiplying  the
number  of  shares of Common  Stock  for  which  the  surrendered  Stock  Option
Agreement was exercisable at the time of delivery of the notice of repurchase by
a fraction,  the  numerator of which is the Section 8  Repurchase  Consideration
less  the  portion  thereof  theretofore   delivered  to  the  Grantee  and  the
denominator  of  which  is the  Section  8  Repurchase  Consideration,  or (B) a
certificate for the Option Shares it is then prohibited from repurchasing.

         Notwithstanding  anything  herein  to the  contrary,  all of  Grantee's
rights under this  Section 8 shall  terminate  on the  Termination  Date of this
Option pursuant to Section 3(a) of this Agreement.

         (c) For purposes of this Agreement,  the  "Applicable  Price" means the
highest of: (i) the highest  price per share of Issuer Common Stock paid for any
such share by the person or groups described in Section 8(d)(i) below;  (ii) the
price per share of Issuer  Common  Stock  received  by holders of Issuer  Common
Stock in connection  with any merger or other business  combination  transaction
described in Section 7(b)(i),  7(b)(ii) or 7(b)(iii) above; or (iii) the highest
last  sales  price per  share of  Issuer  Common  Stock  quoted on any  national
securities  exchange  (including  the NASDAQ - National  Market  System)  (or if
Issuer Common Stock is not quoted on any such national securities exchange,  the
highest  bid  price  per share as  quoted  on the  principal  trading  market or
securities  exchange on which such shares are traded as reported by a recognized
source  chosen by Grantee)  during the sixty (60)  business  days  preceding the
Request Date; provided, however, that in the event of a sale of less than all of
Issuer's assets, the Applicable Price shall be the sum of the price paid in such
sale for such assets and the current  market  value of the  remaining  assets of
Issuer as determined by a nationally recognized investment banking firm selected
by  Grantee,  divided  by the  number  of  shares  of the  Issuer  Common  Stock
outstanding at the time of such sale. If the  consideration to be offered,  paid
or  received  pursuant to either of the  foregoing  clauses (i) or (ii) shall be
other than in cash, the value of such consideration  shall be determined in good
faith by an independent  nationally  recognized investment banking firm selected
by Grantee and reasonably  acceptable to Issuer,  which  determination  shall be
conclusive for all purposes of this Agreement.

         (d) As used herein, a "Repurchase  Event" shall occur if (i) any person
(other than Grantee or any subsidiary of Grantee) shall have acquired beneficial
ownership  of (as such  term is  defined  in Rule  l3d-3  promulgated  under the
Exchange Act), or the right to acquire  beneficial  ownership of, or any "group"
(as such term  is defined under  the Exchange Act)  shall have been formed which




                                      D-10

<PAGE>



beneficially owns or has the right to acquire beneficial ownership of, more than
50% of the then  outstanding  shares of Issuer Common Stock,  or (ii) any of the
transactions  described  in  Section  7(b)(i),  7(b)(ii)  or  7(b)(iii)  of this
Agreement shall be consummated.

9.       Registration Rights.

         (a) Demand Registration Rights. Issuer shall, subject to the conditions
of subparagraph (c) below, if requested by Grantee, as expeditiously as possible
prepare  and file a  registration  statement  under the  Securities  Act if such
registration  is necessary in order to permit the sale or other  disposition  of
any or all  shares of Issuer  Common  Stock or other  securities  that have been
acquired by or are issuable to Grantee upon exercise of the Option in accordance
with the intended method of sale or other disposition  stated by Grantee in such
request,  including without limitation a "shelf'"  registration  statement under
Rule 415 under the Securities Act or any successor  provision,  and Issuer shall
use its best efforts to qualify such shares or other  securities  for sale under
any applicable state securities laws.

         (b)  Additional  Registration  Rights.  If Issuer at any time after the
exercise of the Option  proposes to register  any shares of Issuer  Common Stock
under the Securities Act in connection with an  underwritten  public offering of
such Issuer  Common Stock,  Issuer will promptly give written  notice to Grantee
(and any permitted  transferee)  of its intention to do so and, upon the written
request of Grantee (or any such permitted transferee of Grantee) given within 30
days after receipt of any such notice (which request shall specify the number of
shares of Issuer  Common  Stock  intended to be  included  in such  underwritten
public  offering by Grantee (or such permitted  transferee)),  Issuer will cause
all such shares, the holders of which shall have requested participation in such
registration,  to be so  registered  and  included in such  underwritten  public
offering; provided, that the Issuer may elect not to cause all of the shares for
which  the  Grantee  has  requested  participation  in such  registration  to be
registered   and  included  in  such   underwritten   public   offering  if  the
underwriters,  for good  business  reasons  and in good  faith,  object  to such
inclusion.

         (c)  Conditions  to  Required   Registration.   Issuer  shall  use  all
reasonable  efforts  to  cause  each  registration   statement  referred  to  in
subparagraph (a) above to become effective and to obtain all consents or waivers
of other  parties  which are  required  therefor  and to keep such  registration
statement effective, provided, however, Issuer shall not be required to register
Option Shares under the Securities Act pursuant to subparagraph (a) above:

                    (i) prior to the earliest of (a)  termination  of the Merger
           Agreement, and (b) a Purchase Event or a Preliminary Purchase Event;

                    (ii)   on more than two occasions;

                    (iii)  more than once during any calendar year; and

                    (iv)  within  90  days  after  the   effective   date  of  a
           registration  referred to in subparagraph (b) above pursuant to which
           the holder or  holders of the  Option Shares concerned  were afforded




                                      D-11

<PAGE>



           the opportunity to register such  shares under the Securities Act and
           such shares were registered as requested.

         In addition to the foregoing,  Issuer shall not be required to maintain
the effectiveness of any registration statement after the expiration of 180 days
from the effective  date of such  registration  statement.  Issuer shall use all
reasonable efforts to make any filings, and take all steps, under all applicable
state  securities  laws to the  extent  necessary  to  permit  the sale or other
disposition  of the Option Shares so registered in accordance  with the intended
method of distribution for such shares.

         (d)  Expenses.   Except  where  applicable  state  law  prohibits  such
payments,  Issuer will pay all of its expenses  (including,  without limitation,
registration  fees,  qualification  fees,  blue  sky fees  and  expenses,  legal
expenses,  printing  expenses and the costs of special  audits or "cold comfort"
letters,  expenses of  underwriters,  excluding  discounts and  commissions  but
including  liability  insurance  if Issuer so  desires  or the  underwriters  so
require,  and the reasonable fees and expenses of any necessary special experts)
in connection with each  registration  pursuant to subparagraph (a) or (b) above
(including the related  offerings and sales by holders of Option Shares) and all
other  qualifications,  notifications or exemptions pursuant to subparagraph (a)
or (b)  above;  provided,  however,  that fees and  expenses  of  counsel to the
Grantee and any other expenses  incurred by the Grantee in connection  with such
registration shall be borne by the Grantee.

         (e)   Indemnification.   In  connection  with  any  registration  under
subparagraph (a) or (b) above Issuer hereby indemnifies the holder of the Option
Shares,  and each  underwriter  thereof,  including  each  person,  if any,  who
controls  such  holder or  underwriter  within the  meaning of Section 15 of the
Securities Act, against all expenses,  losses,  claims,  damages and liabilities
caused by any untrue, or alleged untrue,  statement of a material fact contained
in any registration statement or prospectus or notification or offering circular
(including any amendments or supplements thereto) or any preliminary prospectus,
or caused by any omission, or alleged omission, to state therein a material fact
required to be stated  therein or necessary to make the  statements  therein not
misleading,  except  insofar  as  such  expenses,  losses,  claims,  damages  or
liabilities  of such  indemnified  party are caused by any untrue  statement  or
alleged untrue  statement  that was included by Issuer in any such  registration
statement or prospectus or  notification  or offering  circular  (including  any
amendments or  supplements  thereto) in reliance  upon and in  conformity  with,
information  furnished in writing to Issuer by such indemnified  party expressly
for use therein, and Issuer and each officer, director and controlling person of
Issuer  shall be  indemnified  by such holder of the Option  Shares,  or by such
underwriter,  as the case may be, for all such expenses, losses, claims, damages
and liabilities  caused by any untrue,  or alleged untrue,  statement,  that was
included  by  Issuer  in  any  such  registration  statement  or  prospectus  or
notification  or offering  circular  (including  any  amendments or  supplements
thereto) in reliance  upon,  and in conformity  with,  information  furnished in
writing  to  Issuer  by such  holder  or such  underwriter,  as the case may be,
expressly for such use.

         Promptly upon receipt by a party  indemnified  under this  subparagraph
(e) of notice of the commencement of any action against such  indemnified  party
in  respect  of  which  indemnity  or  reimbursement  may  be sought against any




                                      D-12

<PAGE>



indemnifying  party under this  subparagraph  (e), such indemnified  party shall
notify the indemnifying party in writing of the commencement of such action, but
the  failure so to notify the  indemnifying  party  shall not  relieve it of any
liability  which it may  otherwise  have to any  indemnified  party  under  this
subparagraph  (e). In case notice of  commencement  of any such action  shall be
given to the indemnifying party as above provided,  the indemnifying party shall
be entitled to participate  in and, to the extent it may wish,  jointly with any
other  indemnifying  party  similarly  notified,  to assume the  defense of such
action at its own expense,  with counsel chosen by it and  satisfactory  to such
indemnified party. The indemnified party shall have the right to employ separate
counsel in any such action and participate in the defense thereof,  but the fees
and  expenses of such counsel  (other than  reasonable  costs of  investigation)
shall be paid by the indemnified party unless (i) the indemnifying  party either
agrees to pay the same, (ii) the indemnifying  party fails to assume the defense
of such action with counsel  satisfactory to the indemnified party, or (iii) the
indemnified  party has been advised by counsel  that one or more legal  defenses
may be available to the indemnifying  party that may be contrary to the interest
of the indemnified party, in which case the indemnifying party shall be entitled
to assume the defense of such action notwithstanding its obligation to bear fees
and  expenses of such  counsel.  No  indemnifying  party shall be liable for any
settlement  entered  into  without  its  consent,   which  consent  may  not  be
unreasonably withheld.

         If  the  indemnification  provided  for  in  this  subparagraph  (e) is
unavailable  to a party  otherwise  entitled to be indemnified in respect of any
expenses,  losses,  claims,  damages or liabilities referred to herein, then the
indemnifying  party, in lieu of indemnifying such party otherwise entitled to be
indemnified,  shall contribute to the amount paid or payable by such party to be
indemnified as a result of such expenses, losses, claims, damages or liabilities
in such proportion as is appropriate to reflect the relative  benefits  received
by Issuer,  the selling  shareholders and the underwriters  from the offering of
the securities and also the relative fault of Issuer,  the selling  shareholders
and the  underwriters  in  connection  with the  statements  or omissions  which
resulted in such expenses,  losses, claims,  damages or liabilities,  as well as
any other  relevant  equitable  considerations.  The amount paid or payable by a
party as a result of the  expenses,  losses,  claims,  damages  and  liabilities
referred to above shall be deemed to include any legal or other fees or expenses
reasonably  incurred by such party in connection with investigating or defending
any action or claim; provided, however, that in no case shall the holders of the
Option Shares be responsible,  in the aggregate, for any amount in excess of the
net  offering  proceeds  attributable  to  its  Option  Shares  included  in the
offering. No person guilty of fraudulent  misrepresentation  (within the meaning
of Section 11 (f) of the Securities Act) shall be entitled to contribution  from
any  person  who  was  not  guilty  of such  fraudulent  misrepresentation.  Any
obligation by any holder to indemnify  shall be several and not joint with other
holders.

         In connection with any registration pursuant to subparagraph (a) or (b)
above,  Issuer and each holder of any Option Shares  (other than Grantee)  shall
enter  into an  agreement  containing  the  indemnification  provisions  of this
subparagraph (e).

         (f)  Miscellaneous  Reporting.  Issuer shall comply with all  reporting
requirements and will do all such other things as may be necessary to permit the
expeditious  sale at any time of any  Option  Shares by the  holder  thereof  in
accordance with and  to the extent  permitted by any  rule or regulation promul-
gated by the  SEC from time  to time.  Issuer  shall at its  expense provide the




                                      D-13

<PAGE>



holder of any Option Shares with any  information  necessary in connection  with
the  completion  and filing of any reports or forms required to be filed by them
under the Securities Act or the Exchange Act, or required  pursuant to any state
securities laws or the rules of any stock exchange.

         (g) Issue Taxes. Issuer will pay all stamp taxes in connection with the
issuance and the sale of the Option Shares and in  connection  with the exercise
of the Option,  and will save Grantee harmless,  without  limitation as to time,
against any and all liabilities, with respect to all such taxes.

10.  Quotation;  Listing.  If Issuer Common Stock or any other  securities to be
acquired  upon  exercise  of the Option are then  authorized  for  quotation  or
trading or listing on any national  securities  exchange (including the NASDAQ -
National Market System) or any securities exchange,  Issuer, upon the request of
Grantee,  will  promptly  file an  application,  if required,  to authorize  for
quotation  or  trading or listing  the  shares of Issuer  Common  Stock or other
securities  to be  acquired  upon  exercise  of the Option on any such  national
securities  exchange  and will use its  best  efforts  to  obtain  approval,  if
required, of such quotation or listing as soon as practicable.

11.  Division of Option.  This  Agreement  (and the Option  granted  hereby) are
exchangeable,  without expense, at the option of Grantee,  upon presentation and
surrender  of this  Agreement  at the  principal  office  of  Issuer  for  other
Agreements providing for Options of different denominations entitling the holder
thereof to purchase in the  aggregate the same number of shares of Issuer Common
Stock purchasable  hereunder.  The terms "Agreement" and "Option" as used herein
include any other  Agreements and related  Options for which this Agreement (and
the Option granted hereby) may be exchanged.  Upon receipt by Issuer of evidence
reasonably  satisfactory to it of the loss, theft,  destruction or mutilation of
this Agreement,  and (in the case of loss,  theft, or destruction) of reasonably
satisfactory  indemnification,  and  upon  surrender  and  cancellation  of this
Agreement, if mutilated, Issuer will execute and deliver a new Agreement of.
like tenor and date.

12.      Miscellaneous.

         (a)  Expenses.  Except  as  otherwise  provided  in  Section  9 of this
Agreement,  each of the parties hereto shall bear and pay all costs and expenses
incurred by it or on its behalf in connection with the transactions contemplated
hereunder,  including  fees  and  expenses  of its  own  financial  consultants,
investment bankers, accountants and counsel.

         (b) Waiver and Amendment. Any provision of this Agreement may be waived
at any time by the party that is entitled to the  benefits of such  provision if
such waiver is in writing. This Agreement may not be modified,  amended, altered
or  supplemented  except upon the execution and delivery of a written  agreement
executed by the parties hereto.

         (c) Entire Agreement;  No Third Party Beneficiary;  Severability.  This
Agreement,  together  with the  Merger  Agreement  and the other  documents  and
instruments  referred  to herein and  therein,  between  Grantee  and Issuer (a)
constitutes  the  entire  agreement  and  supersedes  all  prior  agreements and




                                      D-14

<PAGE>



understandings,  both written and oral,  between the parties with respect to the
subject  matter  hereof and (b) is not  intended to confer upon any person other
than the parties hereto (other than any  transferees of the Option Shares or any
permitted  transferee of this Agreement pursuant to Section 12(h)) any rights or
remedies  hereunder.  If any term,  provision,  covenant or  restriction of this
Agreement  is held by a court of  competent  jurisdiction  or a federal or state
regulatory  agency to be invalid,  void or  unenforceable,  the remainder of the
terms, provisions,  covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected,  impaired or invalidated.
If for any reason such court or  regulatory  agency  determines  that the Option
does not permit  Grantee to acquire,  or does not require  Issuer to repurchase,
the full number of shares of Issuer Common Stock as provided in Sections 3 and 8
(as  adjusted  pursuant to Section 7), it is the express  intention of Issuer to
allow Grantee to acquire or to require  Issuer to repurchase  such lesser number
of shares as may be permissible without any amendment or modification hereof.

         (d) Governing  Law. This  Agreement  shall be governed and construed in
accordance  with  the laws of the  State of  California  without  regard  to any
applicable conflicts of law rules.

         (e) Descriptive  Heading. The descriptive headings contained herein are
for convenience of reference only and shall not affect in any way the meaning or
interpretation of this Agreement.

         (f) Notices. All notices and other communications hereunder shall be in
writing and shall be deemed  given if  delivered  personally,  telecopied  (with
confirmation)  or  mailed  by  registered  or  certified  mail  (return  receipt
requested)  to the parties at the  following  addresses (or a such other address
for a party as shall be specified by like notice):


         IF TO ISSUER TO:

                           Pacific Capital Bancorp
                           307 Main Street
                           Salinas, California 93901
                           Telecopy: (408) 646-9748
                           Attention:  Mr. Clayton C. Larson,
                                       President and Chief Administrative
                                       Officer


         WITH A COPY TO:

                           Mr. James E. Topinka
                           Preston Gates & Ellis LLP
                           One Maritime Plaza
                           Suite 2400
                           San Francisco, California 94111
                           Telecopy: (415) 788-8819




                                      D-15

<PAGE>




         IF TO GRANTEE:

                           Santa Barbara Bancorp
                           1021 Anacapa Street
                           Santa Barbara, California 93101-2036
                           Telecopy: (804) 564-6293
                           Attention:  Mr. David W. Spainhour,
                                          President and Chief Executive Officer


         WITH A COPY TO:

                           Mr. Charles E. Greef
                           Mr. Peter G. Weinstock
                           Jenkens & Gilchrist,
                           a Professional Corporation
                           1445 Ross Avenue, Suite 3200
                           Dallas, Texas  75202-2799
                           Telecopy:  (214) 855-4300

         (g)  Counterparts.  This  Agreement  and any  amendments  hereto may be
executed in multiple counterparts, each of which shall be considered one and the
same  agreement  and shall become  effective  when both  counterparts  have been
signed,   it  being  understood  that  both  parties  need  not  sign  the  same
counterpart.

         (h) Assignment. Neither this Agreement nor any of the rights, interests
or  obligations  hereunder  or under the Option  shall be assigned by any of the
parties  hereto  (whether by  operation of law or  otherwise)  without the prior
written  consent  of the other  party,  except  that  Grantee  may  assign  this
Agreement  to a wholly  owned  subsidiary  of Grantee and Grantee may assign its
rights  hereunder in whole or in part after the occurrence of a Purchase  Event.
Subject to the preceding  sentence,  this Agreement shall be binding upon, inure
to the  benefit  of and be  enforceable  by the  parties  and  their  respective
successors and assigns.

         (i) Further  Assurances.  In the event of any exercise of the Option by
Grantee,  Issuer and Grantee shall  execute and deliver all other  documents and
instruments and take all other action that may be reasonably  necessary in order
to consummate the transactions provided for by such exercise.

         (j) Specific Performance.  The parties hereto agree that this Agreement
may be enforced by either party through specific performance,  injunctive relief
and other equitable relief.  Both parties further agree to waive any requirement
for the securing or posting of any bond in connection  with the obtaining of any
such equitable relief and that this provision is without  prejudice to any other
rights  that the  parties  hereto  may  have for any  failure  to  perform  this
Agreement.




                                      D-16

<PAGE>







         IN WITNESS WHEREOF, Issuer and Grantee have caused this Agreement to be
signed by their respective officers thereunto duly authorized, all as of the day
and year first written above.



                                  SANTA BARBARA BANCORP




                                  By:  /s/  William S. Thomas, Jr.
                                       -----------------------------------------
                                       William S. Thomas, Jr., Vice Chairman and
                                       Chief Operating Officer

                             and


                                  By:  /s/  Kent M. Vining
                                       -----------------------------------------
                                       Kent M. Vining, Senior Vice President


                                  PACIFIC CAPITAL BANCORP


                                  By:  /s/  D. Vernon Horton
                                       -----------------------------------------
                                       D. Vernon Horton, Chairman of the Board
                                       and Chief Executive Officer


                             and


                                  By:  /s/  Clayton C. Larson
                                       -----------------------------------------
                                       Clayton C. Larson, President and
                                       Chief Administrative Officer




                                      D-17

<PAGE>







                                                                      APPENDIX E
                                                                      ----------


                      [Letterhead of Van Kasper & Company]




____________, 1998



Members of the Board of Directors
Pacific Capital Bancorp
307 Main Street
Salinas, CA  93901

Members of the Board:

         You  have  requested  our  opinion  as  investment  bankers  as to  the
fairness, from a financial point of view, to the shareholders of Pacific Capital
Bancorp ("Pacific  Capital") of the Exchange Ratio as defined in Section 1.04 of
the  Agreement  and  Plan of  Reorganization  dated  as of July  20,  1998  (the
"Agreement"),  in the proposed  merger (the  "Merger") of Santa Barbara  Bancorp
("Santa  Barbara") and Pacific  Capital.  On the Effective Date (as such term is
defined in the  Agreement),  each share of Pacific  Capital Common Stock will be
converted  into the right to receive 1.935 shares of Santa Barbara Common Stock.
In arriving at our opinion,  we have reviewed and analyzed,  among other things,
the following: (i) the Agreement;  (ii) certain publicly available financial and
other  data  with  respect  to Santa  Barbara  and  Pacific  Capital,  including
consolidated  financial  statements for recent years and interim periods to June
30, 1998; (iii) certain other publicly available financial and other information
concerning  Santa  Barbara and Pacific  Capital and the trading  markets for the
publicly traded  securities of Santa Barbara and Pacific Capital;  (iv) publicly
available  information  concerning other banks and bank holding  companies,  the
trading  markets for their  securities and the nature and terms of certain other
merger transactions we believed relevant to our inquiry; and (v) evaluations and
analyses  prepared and presented to the Board of Directors of Pacific Capital or
a committee thereof in connection with the Merger. We have held discussions with
senior management of Pacific Capital  concerning the companies' past and current
operations, financial condition and prospects.

         We have reviewed with the senior management of Pacific Capital earnings
projections  for Pacific  Capital as a stand-alone  entity,  assuming the Merger
does not occur. We have also reviewed earnings  projections for Santa Barbara as
a stand-alone  entity,  assuming the Merger does not occur as well as securities
industry  consensus  estimates  of projected  earnings per share from  published
sources for Santa Barbara as a stand-alone entity. Certain financial projections
for the  combined  companies  and for  Pacific  Capital  and  Santa  Barbara  as
stand-alone entities were derived by us based partially upon the projections and




                                       E-1

<PAGE>


Pacific Capital Bancorp
________________, 1998
Page 2


information  described above, as well as our own assessment of general economic,
market and financial conditions.

         In conducting our review and in arriving at our opinion, we have relied
upon and  assumed the  accuracy  and  completeness  of the  financial  and other
information  provided to us or publicly  available,  and we have not assumed any
responsibility  for  independent  verification of the same. Van Kasper relied on
advice of counsel  and  independent  accountants  as to all legal and  financial
reporting matters with respect to the Santa Barbara, Pacific Capital, the Merger
and the Agreement.  We have relied upon the  managements of Pacific  Capital and
Santa Barbara as to the reasonableness of the financial and operating forecasts,
projections and projected  operating cost savings (and the assumptions and bases
therefor)  provided to us, and we have assumed that such forecasts,  projections
and  projected  operating  cost  savings  reflect the best  currently  available
estimates and  judgments of the  applicable  managements.  We have also assumed,
without assuming any  responsibility  for the independent  verification of same,
that the  aggregate  allowances  for loan losses for  Pacific  Capital and Santa
Barbara are  adequate  to cover such  losses.  We have not made or obtained  any
evaluations  or appraisals of the property of Pacific  Capital or Santa Barbara,
nor have we examined  any  individual  loan credit  files.  For purposes of this
opinion, we have assumed that the Merger will have the tax, accounting and legal
effects (including, without limitation, that the Merger will be accounted for as
a pooling of  interests)  described  in the Merger  Agreement  and  assumed  the
accuracy of the disclosures set forth in the Form S-4 Registration Statement for
the Merger.  Our opinion as expressed herein is limited to the fairness,  from a
financial  point of view, to the holders of the Common Stock of Pacific  Capital
of the  Exchange  Ratio in the Merger  and does not  address  Pacific  Capital's
underlying business decision to proceed with the Merger.

         We have  considered  such financial and other factors as we have deemed
appropriate under the circumstances,  including among others the following:  (i)
the  historical  and current  financial  position and results of  operations  of
Pacific Capital and Santa Barbara,  including interest income, interest expense,
net  interest  income,   net  interest   margin,   provision  for  loan  losses,
non-interest income, non-interest expense, earnings, dividends, internal capital
generation,   book  value,  intangible  assets,  return  on  assets,  return  on
shareholders'  equity,  capitalization,  the amount  and type of  non-performing
assets,  loan losses and the reserve  for loan  losses,  all as set forth in the
financial statements for Pacific Capital and for Santa Barbara;  (ii) the assets
and  liabilities  of Pacific  Capital  and Santa  Barbara,  including  the loan,
investment and mortgage portfolios, deposits, other liabilities,  historical and
current  liability  sources  and costs and  liquidity;  and (iii) the nature and
terms of certain  other  merger  transactions  involving  banks and bank holding
companies.  We have also taken into account our assessment of general  economic,
market and financial  conditions  and our experience in other  transactions,  as
well as our experience in securities  valuation and our knowledge of the banking
industry generally. Our opinion is  necessarily  based upon  conditions  as they




                                       E-2

<PAGE>


Pacific Capital Bancorp
________________, 1998
Page 3


exist and can be evaluated on the date hereof and the information made available
to us through the date hereof.

         It is understood  that this letter is for the  information of the Board
of  Directors   of  Pacific   Capital.   This  letter  does  not   constitute  a
recommendation  to the  Board of  Directors  or to any  shareholder  of  Pacific
Capital with respect to any approval of the Merger.

         Based  upon and  subject  to the  foregoing,  we are of the  opinion as
investment bankers that, as of the date hereof, the Exchange Ratio in the Merger
is fair,  from a financial  point of view, to the holders of the Common Stock of
Pacific Capital.

                                                     Very truly yours,


                                                     Van Kasper & Company




                                       E-3

<PAGE>






                                   APPENDIX F



                  [Letterhead of The Bank Advisory Group, Inc.]




_____________, 1998



Board of Directors
Santa Barbara Bancorp
Santa Barbara, California

Ladies and Gentlemen:

         You have  requested  that  The  Bank  Advisory  Group,  Inc.  act as an
independent financial analyst and advisor to Santa Barbara Bancorp, a California
corporation  ("SBB").  Specifically,  we have been  asked to render  advice  and
analysis  in  connection  with the  proposed  merger (the  "Merger")  of Pacific
Capital Bancorp, Salinas, California, a California corporation ("Pacific"), with
and into SBB, under the articles of  incorporation of SBB and with the resulting
name  "Pacific  Capital  Bancorp"  [SBB as it will  exist  from  and  after  the
Effective Date of the Merger (the "Effective  Date") being referred to herein as
the "Surviving  Corporation"].  In our role as an independent financial advisor,
you  have  requested  our  opinion  with  regard  to the  fairness  -- from  the
perspective of the common  shareholders  of SBB -- of the financial terms of the
Merger  pursuant to the  provisions of the Agreement and Plan of  Reorganization
dated July 20,  1998 (the  "Reorganization  Agreement"),  by and between SBB and
Pacific.

         In conjunction  with our review of the  Reorganization  Agreement,  our
understanding  is that SBB and Pacific propose to consummate the Merger pursuant
to the following financial terms:

         o        Holders of  Pacific's,  no par value per share,  common  stock
                  ("Pacific Common Stock") at the Effective Date, other than the
                  shares  held  by any  holders  who  have  duly  exercised  and
                  perfected  their  dissenters'  rights,  shall receive for each
                  share of Pacific  Common  Stock 1.935  shares  (the  "Exchange
                  Ratio") of SBB's,  no par value per share,  common stock ("SBB
                  Common Stock").

         o        No fractional shares of SBB Common Stock will be issued in the
                  Merger  and,  in lieu  thereof,  holders  of shares of Pacific
                  Common  Stock who would  otherwise be entitled to a fractional
                  share  interest  will be paid an amount  in cash  equal to the
                  product of such  fractional  share interest and the average of
                  the closing bid and asked price of a share of SBB Common Stock




                                       F-1

<PAGE>


Board of Directors
Santa Barbara Bancorp
______________, 1998
Page 2




                  as reported on the Nasdaq  National Market on the business day
                  immediately preceding the Effective Date.
                  
         o        All  outstanding  options to acquire  common  stock of Pacific
                  shall be converted into options to acquire common stock of the
                  Surviving Corporation,  with the number of shares and exercise
                  price subject to adjustment for the Exchange Ratio.

         o        On and after the  Effective  Date,  each  share of SBB  Common
                  Stock issued and outstanding  immediately prior to the closing
                  date of the  Merger  shall  remain an issued  and  outstanding
                  share of common stock of the Surviving  Corporation  and shall
                  not be affected by the Merger.

         The Bank  Advisory  Group,  Inc.,  as part of its line of  professional
services,  specializes in rendering valuation opinions of banks and bank holding
companies in connection with mergers and acquisitions  nationwide.  Since August
1990,  and  prior to our  retention  for this  assignment,  we have  served as a
financial advisor to SBB under the terms of a retainer  agreement (the "Retainer
Agreement").  Professional  fees  paid  by SBB  under  the  Retainer  Agreement,
together with supplemental  billings for specific financial advisory services we
provided  that  exceeded  the  scope of the  Retainer  Agreement  ("Supplemental
Billings"), totaled $38,250 for the period August 1, 1997 through July 31, 1998,
and  approximated  $74,700 for the period  August 1, 1996 through July 31, 1997.
SBB  also  reimbursed  us  for   miscellaneous   out-of-pocket   expenses.   The
professional  fees  received  from SBB under  the  Retainer  Agreement  and from
Supplemental  Billings were  insignificant as compared to annual revenues of The
Bank Advisory Group.

         For our services as an independent financial analyst and advisor to SBB
in connection  with the Merger,  SBB has agreed to pay The Bank Advisory Group a
professional fee totaling $295,000. SBB also has agreed to provide reimbursement
for  reasonable  out-of-pocket  expenses.  SBB has agreed to indemnify  The Bank
Advisory Group, the officers, directors, employees, and shareholders of The Bank
Advisory Group and assigns,  heirs,  beneficiaries and legal  representatives of
each indemnified entity and person.

         No portion of the  professional  fee is contingent  upon the conclusion
reached herein.  And, no limitations  were imposed by the SBB Board of Directors
with respect to the investigations made or procedures followed in rendering this
opinion.

         We have not provided any services to Pacific and,  thus,  have received
no professional fees from Pacific.




                                       F-2

<PAGE>


Board of Directors
Santa Barbara Bancorp
______________, 1998
Page 3




         The Bank  Advisory  Group  does not,  and its  officers  directors  and
shareholders do not, own any shares of SBB Common Stock or Pacific Common Stock;
nor does The Bank Advisory Group make a market in the stock of SBB, Pacific,  or
any other publicly-traded security, financial or otherwise.

         In  connection  with this  opinion  and with  respect  to SBB,  we have
reviewed, among other things:

         1.       Audited consolidated  financial statements, on  Form 10-K, for
                  the years ended December 31, 1997, 1996, and 1995;

         2.       Quarterly financial statements, on Form 10-Q, for the 1997 and
                  1996  calendar  quarters,  and  for  the  first  two  calendar
                  quarters of 1998;

         3.       Consolidated financial statements,  on form F.R. Y-9C, for the
                  years ended  December 31, 1997,  1996,  and 1995,  and for the
                  six-month  period  ended  June 30,  1998,  as  filed  with the
                  Federal Reserve System;

         4.       Internally-generated  financial statements for the eight-month
                  period ending August 31, 1998;

         5.       Selected  equity  research  reports  regarding SBB prepared by
                  various analysts who cover the financial  institutions  sector
                  for market makers of SBB Common Stock;

         6.       Certain  internal  financial  analyses and  forecasts  for SBB
                  prepared by the  management of SBB,  including  projections of
                  future performance;

         7.       Certain other summary  materials and analyses  with respect to
                  SBB's loan  portfolio,  securities  portfolio,  deposit  base,
                  fixed assets, and  operations including, but  not  limited to:
                  (i) schedules of loans and  other assets identified by manage-
                  ment as deserving  special attention or  monitoring  given the
                  characteristics of the loan/asset  and the local economy, (ii)
                  analyses concerning the  adequacy of the  loan  loss  reserve,
                  (iii)  schedules  of  "other  real  estate  owned,"  including
                  current  carrying  values  and  recent  appraisals,  and  (iv)
                  schedules of securities, detailing book values, market values,
                  and lengths to maturity;





                                       F-3

<PAGE>


Board of Directors
Santa Barbara Bancorp
______________, 1998
Page 4




         8.       Certain publicly-available  information concerning the trading
                  of, and the trading market for, SBB Common Stock;

         9.       The condition of the commercial banking industry, as indicated
                  in  financial   reports   filed  with  various   Federal  bank
                  regulatory  authorities  by all  federally-insured  commercial
                  banks; and

         10.      Such  other  information  --  including   financial   studies,
                  analyses,  investigations, and economic and market criteria --
                  that we deem relevant to this assignment.

         In  connection  with this opinion and with respect to Pacific,  we have
reviewed, among other things:

         1.       Audited consolidated financial statements, on Form 10-K, for
                  the years ended December 31, 1997, 1996, and 1995;

         2.       Quarterly financial statements, on Form 10-Q, for the 1997 and
                  1996  calendar  quarters,  and  for  the  first  two  calendar
                  quarters of 1998;

         3.       Consolidated financial statements,  on form F.R. Y-9C, for the
                  years ended  December 31, 1997,  1996,  and 1995,  and for the
                  six-month  period  ended  June 30,  1998,  as  filed  with the
                  Federal Reserve System;

         4.       Internally-generated  financial statements for the eight-month
                  period ending August 31, 1998;

         5.       Selected equity research reports regarding Pacific prepared by
                  various analysts who cover the financial  institutions  sector
                  for market makers of Pacific Common Stock;

         6.       Certain internal  financial analyses and forecasts for Pacific
                  prepared  individually  and  collectively by the management of
                  SBB and Pacific, including projections of future performance;

         7.       Certain other  summary  materials and analyses with respect to
                  Pacific's loan portfolio,  securities portfolio, deposit base,
                  fixed assets,  and operations  including,  but not limited to:
                  (i)  schedules  of  loans  and  other  assets   identified  by
                  management as deserving  special attention or monitoring given
                  the characteristics of  the loan/asset  and the local economy,




                                       F-4

<PAGE>


Board of Directors
Santa Barbara Bancorp
______________, 1998
Page 5




                  (ii)  analyses  concerning  the  adequacy  of  the  loan  loss
                  reserve,  (iii)  schedules   of  "other  real  estate  owned,"
                  including current  carrying values  and recent appraisals, and
                  (iv) schedules  of securities,  detailing book  values, market
                  values, and lengths to maturity;

         8.       Certain publicly-available  information concerning the trading
                  of, and the trading market for, Pacific Common Stock;

         9.       The condition of the commercial banking industry, as indicated
                  in  financial   reports   filed  with  various   Federal  bank
                  regulatory  authorities  by all  federally-insured  commercial
                  banks; and

         10.      Such  other  information  --  including   financial   studies,
                  analyses,  investigations, and economic and market criteria --
                  that we deem relevant to this assignment.

         In  connection  with this  opinion  and with  respect  to the  proposed
Merger, we have reviewed, among other things:

         1.       The Reorganization Agreement, and any amendments thereto, that
                  sets  forth,  among  other  items,  the terms,  conditions  to
                  closing,  pending litigation against both SBB and Pacific, and
                  representations and warranties of SBB and Pacific with respect
                  to the proposed Merger;

         2.       The Joint  Proxy  Statement/Prospectus,  in draft  form  dated
                  September 22, 1998, to which, in final form, this opinion will
                  be appended, and that will be furnished to the shareholders of
                  both SBB and Pacific in connection with the proposed Merger;

         3.       The  financial   terms  and  price   levels,   to  the  extent
                  publicly-available,  of selected recent business  combinations
                  of companies in the banking  industry that we deem comparable,
                  either in whole or in part, to the Merger -- together with the
                  financial   performance   and   condition   of  such   banking
                  organizations;

         4.       The price-to-equity multiples, price-to-earnings multiples and
                  trading volumes of banking  organizations  based in the United
                  States  --  and   specifically  in  California  --  that  have
                  publicly-traded  common  stock,  together  with the  financial
                  performance  and  condition  of  such  banking  organizations,
                  compared  with  the   price-to-equity   multiples,   price-to-



                                       F-5

<PAGE>


Board of Directors
Santa Barbara Bancorp
______________, 1998
Page 6




                  earnings multiples  and trading  volumes for  both SBB  Common
                  Stock and Pacific Common Stock; and

         5.       Such  other  information  --  including   financial   studies,
                  analyses,  investigations, and economic and market criteria --
                  that we deem relevant to this assignment.

         Based on our experience,  we believe our review of, among other things,
the   aforementioned   items  provides  a  reasonable  basis  for  our  opinion,
recognizing  that we are  expressing an informed  professional  opinion -- not a
certification of value.

         We have relied upon the information  provided by the management of both
SBB and Pacific,  or otherwise reviewed by us, as being complete and accurate in
all material  respects.  Furthermore,  we have not verified through  independent
inspection or examination  the specific assets or liabilities of SBB and Pacific
or their subsidiary  banks. We have also assumed that there has been no material
change in the assets,  financial condition,  results of operations,  or business
prospects  of SBB and Pacific  since the date of the last  financial  statements
made  available to us. We have met with the  management  of both SBB and Pacific
for the purpose of discussing the relevant information that has been provided to
us.

         Our opinion is limited to the  fairness of the  financial  terms of the
Merger, from a financial point of view, to the shareholders of SBB Common Stock.
The financial terms include,  but are not limited to, the Exchange Ratio and the
consequential  pro forma ownership in the Surviving  Company of the shareholders
of SBB Common  Stock.  We were not asked to consider  and our  opinion  does not
address the relative  merits of the proposed  Merger as compared to  alternative
business  strategies  that  might  exist  for  SBB or the  effect  of any  other
transaction  in which SBB might engage.  Our opinion is directed to the Board of
Directors of SBB, and it does not constitute a recommendation to any shareholder
of SBB Common Stock as to how such  shareholder  should vote with respect to the
Merger.

         Based on all factors  that we deem  relevant  and assuming the accuracy
and  completeness  of the information and data provided to us, it is our opinion
that the  terms of the  proposed  Merger,  including,  without  limitation,  the
Exchange  Ratio and the  consequential  pro  forma  ownership  in the  Surviving
Company of the  shareholders  of SBB Common  Stock,  are fair,  from a financial
point of view, to the shareholders of SBB Common Stock.





                                       F-6

<PAGE>


Board of Directors
Santa Barbara Bancorp
______________, 1998
Page 7




         This opinion is available for  disclosure to the  shareholders  of SBB.
Accordingly, we hereby consent to the inclusion of our opinion as an appendix to
the Joint Proxy Statement/Prospectus relating to the proposed Merger, and to the
reference of our firm in the Joint Proxy Statement/Prospectus.

                                                   Respectfully submitted

                                                   THE BANK ADVISORY GROUP, INC.



                                                    By:
                                                            --------------------




                                       F-7

<PAGE>



                                                                      APPENDIX G
                                                                      ----------


                          DISSENTERS' RIGHTS UNDER THE
                       CALIFORNIA GENERAL CORPORATION LAW


ss. 1300.  SHORT-FORM MERGER; PURCHASE OF SHARES AT FAIR MARKET VALUE;
"DISSENTING SHARES" AND DISSENTING SHAREHOLDER

         (a) If the  approval  of the  outstanding  shares  (Section  152)  of a
corporation is required for a reorganization  under  subdivisions (a) and (b) or
subdivision  (e) or (f) of Section 1201,  each  shareholder  of the  corporation
entitled  to  vote on the  transaction  and  each  shareholder  of a  subsidiary
corporation in a short-form merger may, by complying with this chapter,  require
the  corporation in which the  shareholder  holds shares to purchase for cash at
their fair market value the shares owned by the shareholder which are dissenting
shares as defined in subdivision  (b). The fair market value shall be determined
as of the day  before  the  first  announcement  of the  terms  of the  proposed
reorganization or short-form merger,  excluding any appreciation or depreciation
in consequence of the proposed action, but adjusted for any stock split, reverse
stock split or share dividend which becomes effective thereafter.

         (b) As used in this  chapter,  "dissenting  shares"  means shares which
come within all of the following descriptions:

                  (1) Which were not immediately prior to the  reorganization or
short-form  merger  either  (A)  listed  on  any  national  securities  exchange
certified by the Commissioner of Corporations  under  subdivision (o) of Section
25100 or (B)  listed  on the list of OTC  margin  stocks  issued by the Board of
Governors  of  the  Federal  Reserve  System,  and  the  notice  of  meeting  of
shareholders to act upon the reorganization summarizes this section and Sections
1301, 1302, 1303 and 1304; provided, however, that this provision does not apply
to any shares with  respect to which there  exists any  restriction  on transfer
imposed by the corporation or by any law or regulation;  and provided,  further,
that  this  provision  does  not  apply  to any  class of  shares  described  in
subparagraph  (A) or (B) if demands  for  payment  are filed  with  respect to 5
percent or more of the outstanding shares of that class.

                  (2) Which were  outstanding on the date for the  determination
of shareholders entitled to vote on the reorganization and (A) were not voted in
favor of the  reorganization  or, (B) if described in subparagraph (A) or (B) of
paragraph  (1) (without  regard to the provisos in that  paragraph),  were voted
against the  reorganization,  or which were held of record on the effective date
of a short-form  merger;  provided,  however,  that subparagraph (A) rather than
subparagraph  (B) of this  paragraph  applies  in any case  where  the  approval
required by Section 1201 is sought by written consent rather than at a meeting.

                  (3) Which the  dissenting  shareholder  has demanded  that the
corporation  purchase at their fair market  value,  in  accordance  with Section
1301.

                  (4)  Which  the  dissenting   shareholder  has  submitted  for
endorsement, in accordance with Section 1302.

         (c) As  used  in  this  chapter,  "dissenting  shareholder"  means  the
recordholder of dissenting shares and includes a transferee of record.

ss. 1301.  DISSENTER'S RIGHTS; DEMAND ON CORPORATION FOR PURCHASE OF SHARES




                                       G-1

<PAGE>



         (a)  If,  in  the  case  of a  reorganization,  any  shareholders  of a
corporation  have a  right  under  Section  1300,  subject  to  compliance  with
paragraphs (3) and (4) of subdivision (b) thereof, to require the corporation to
purchase  their  shares  for  cash,  such  corporation  shall  mail to each such
shareholder a notice of the approval of the  reorganization  by its  outstanding
shares (Section 152) within 10 days after the date of such approval, accompanied
by a copy of Sections 1301,  1302,  1303, 1304 and this section,  a statement of
the price  determined by the  corporation  to represent the fair market value of
the dissenting  shares,  and a brief description of the procedure to be followed
if the  shareholder  desires to  exercise  the  shareholder's  right  under such
sections.  The statement of price  constitutes  an offer by the  corporation  to
purchase at the price stated any dissenting shares as defined in subdivision (b)
of Section  1300,  unless  they lose their  status as  dissenting  shares  under
Section 1309.

         (b) Any  shareholder  who has a right to  require  the  corporation  to
purchase  the  shareholder's  shares for cash  under  Section  1300,  subject to
compliance  with  paragraphs  (3) and (4) of  subdivision  (b) thereof,  and who
desires the  corporation  to purchase such shares shall make written demand upon
the  corporation  for the purchase of such shares and payment to the shareholder
in cash of their fair market value.  The demand is not effective for any purpose
unless it is received by the  corporation  or any transfer  agent thereof (1) in
the  case  of  shares  described  in  clause  (i) or (ii)  of  paragraph  (1) of
subdivision  (b) of  Section  1300  (without  regard  to the  provisos  in  that
paragraph),  not later than the date of the  shareholders'  meeting to vote upon
the  reorganization,  or (2) in any other case  within 30 days after the date on
which  the  notice  of  the  approval  by the  outstanding  shares  pursuant  to
subdivision  (a) or the notice  pursuant to subdivision  (i) of Section 1110 was
mailed to the shareholder.

         (c) The demand  shall  state the number and class of the shares held of
record by the  shareholder  which the  shareholder  demands that the corporation
purchase and shall contain a statement of what such shareholder claims to be the
fair market value of those shares as of the day before the  announcement  of the
proposed reorganization or short-form merger. The statement of fair market value
constitutes an offer by the shareholder to sell the shares at such price.

ss.1302.  DISSENTING SHARES, STAMPING OR ENDORSING

         Within 30 days after the date on which  notice of the  approval  by the
outstanding shares or the notice pursuant to subdivision (i) of Section 1110 was
mailed to the  shareholder,  the shareholder  shall submit to the corporation at
its principal office or at the office of any transfer agent thereof,  (a) if the
shares are certificated securities,  the shareholder's certificates representing
any shares which the shareholder  demands that the corporation  purchase,  to be
stamped or endorsed with a statement that the shares are dissenting shares or to
be exchanged for certificates of appropriate denomination so stamped or endorsed
or (b) if the shares are uncertificated securities, written notice of the number
of shares which the  shareholder  demands that the  corporation  purchase.  Upon
subsequent  transfers of the dissenting  shares on the books of the  corporation
the  new  certificates,   initial  transaction  statement,   and  other  written
statements  issued therefor shall bear a like statement,  together with the name
of the original dissenting holder of the shares.

ss. 1303. DISSENTING SHAREHOLDER ENTITLED TO AGREED PRICE WITH INTEREST; TIME OF
PAYMENT

         (a) If the corporation  and the  shareholder  agree that the shares are
dissenting  shares  and  agree  upon the  price of the  shares,  the  dissenting
shareholder  is entitled to the agreed price with interest  thereon at the legal
rate on judgments from the date of the agreement. Any agreements fixing the fair
market value of any dissenting shares as between the corporation and the holders
thereof shall be filed with the secretary of the corporation.





                                       G-2

<PAGE>



         (b)  Subject to the  provisions  of Section  1306,  payment of the fair
market value of dissenting  shares shall be made within 30 days after the amount
thereof has been  agreed or within 30 days after any  statutory  or  contractual
conditions to the reorganization  are satisfied,  whichever is later; and in the
case of  certificated  securities,  subject  to  surrender  of the  certificates
therefor, unless provided otherwise by agreement.

ss. 1304.  DISSENTERS ACTIONS; JOINDER; CONSIDERATION; APPOINTMENT OF APPRAISERS

         (a) If the corporation denies that the shares are dissenting shares, or
the corporation and the shareholder  fail to agree upon the fair market value of
the shares, then the shareholder demanding purchase of such shares as dissenting
shares or any interested corporation,  within six months after the date on which
notice  of the  approval  by the  outstanding  shares  (Section  152) or  notice
pursuant to subdivision (i) of Section 1110 was mailed to the  shareholder,  but
not thereafter,  may file a complaint in the superior court of the proper county
praying the court to determine  whether the shares are dissenting  shares or the
fair  market  value of the  dissenting  shares or both or may  intervene  in any
action pending on such a complaint.

         (b) Two or more  dissenting  shareholders  may join as plaintiffs or be
joined as  defendants  in any such  action and two or more such  actions  may be
consolidated.

         (c) On the trial of the action,  the court shall  determine the issues.
If the status of the shares as  dissenting  shares is in issue,  the court shall
first determine that issue. If the fair market value of the dissenting shares is
in issue,  the court shall  determine,  or shall  appoint one or more  impartial
appraisers to determine, the fair market value of the shares.

ss. 1305.  APPRAISERS DUTY AND REPORT; COURT JUDGEMENT; PAYMENT; APPEAL; COSTS
OF ACTION

         (a) If the court  appoints  an  appraiser  or  appraisers,  they  shall
proceed forthwith to determine the fair market value per share.  Within the time
fixed by the court, the appraisers, or a majority of them, shall make and file a
report in the office of the clerk of the court.  Thereupon, on the motion of any
party,  the  report  shall be  submitted  to the  court and  considered  on such
evidence  as the  court  considers  relevant.  If the  court  finds  the  report
reasonable, the court may confirm it.

         (b) If a majority of the  appraisers  appointed fail to make and file a
report within 10 days from the date of their  appointment or within such further
time as may be allowed by the court or the report is not confirmed by the court,
the court shall determine the fair market value of the dissenting shares.

         (c)  Subject to the  provisions  of  Section  1306,  judgment  shall be
rendered  against the  corporation  for  payment of an amount  equal to the fair
market value of each  dissenting  share  multiplied  by the number of dissenting
shares which any dissenting  shareholder  who is a party, or who has intervened,
is entitled to require the corporation to purchase, with interest thereon at the
legal rate from the date on which judgment was entered.

         (d) Any such  judgment  shall be  payable  forthwith  with  respect  to
uncertificated  securities  and, with respect to certificated  securities,  only
upon the endorsement and delivery to the corporation of the certificates for the
shares described in the judgment. Any party may appeal from the judgment.

         (e) The costs of the action,  including reasonable  compensation to the
appraisers  to be fixed by the court,  shall be assessed or  apportioned  as the
court considers  equitable,  but, if the appraisal  exceeds the price offered by
the  corporation,  the  corporation  shall  pay  the  costs  (including  in  the
discretion of the court  attorneys'  fees, fees of expert witnesses and interest
at the legal rate on judgments  from the date of compliance  with Sections 1300,




                                       G-3

<PAGE>



1301 and 1302 if the value awarded by the court for the shares is more, than 125
percent of the price offered by the corporation under subdivision (a) of Section
1301).

ss. 1306.  DISSENTING SHAREHOLDERS; EFFECT OF PREVENTION OF PAYMENT OF FAIR
MARKET VALUE

         To the extent that the  provisions  of Chapter 5 prevent the payment to
any holders of dissenting  shares of their fair market value,  they shall become
creditors of the  corporation  for the amount thereof  together with interest at
the legal rate on judgments  until the date of payment,  but  subordinate  to an
other  creditors  in any  liquidation  proceeding,  such debt to be payable when
permissible under the provisions of Chapter 5.

ss. 1307.  DISSENTING SHARES; DISPOSITION OF DIVIDENDS

         Cash dividends declared and paid by the corporation upon the dissenting
shares  after the date of  approval  of the  reorganization  by the  outstanding
shares  (Section  152) and prior to payment  for the  shares by the  corporation
shall  be  credited  against  the  total  amount  to be paid by the  corporation
therefor.

ss. 1308.  DISSENTING SHARES; RIGHTS AND PRIVILEGES

         Except as  expressly  limited in this  chapter,  holders of  dissenting
shares continue to have all the rights and privileges  incident to their shares,
until the fair  market  value of their  shares is agreed upon or  determined.  A
dissenting  shareholder  may not  withdraw  a  demand  for  payment  unless  the
corporation consents thereto.

ss. 1309.  DISSENTING SHARES; LOSS OF STATUS

         Dissenting  shares  lose  their  status as  dissenting  shares  and the
holders thereof cease to be dissenting  shareholders and cease to be entitled to
require the  corporation  to purchase  their shares upon the happening of any of
the following:

         (a) The corporation  abandons the  reorganization.  Upon abandonment of
the  reorganization,  the  corporation  shall pay on  demand  to any  dissenting
shareholder  who has initiated  proceedings in good faith under this chapter all
necessary expenses incurred in such proceedings and reasonable attorneys' fees.

         (b)  The  shares  are  transferred   prior  to  their   submission  for
endorsement in accordance  with Section 1302 or are  surrendered  for conversion
into shares of another class in accordance with the articles.

         (c) The dissenting  shareholder  and the  corporation do not agree upon
the status of the shares as dissenting  shares or upon the purchase price of the
shares,  and neither  files a complaint  or  intervenes  in a pending  action as
provided in Section  1304,  within six months  after the date on which notice of
the approval by the outstanding  shares or notice pursuant to subdivision (i) of
Section 1110 was mailed to the shareholder.

         (d) The dissenting  shareholder,  with the consent of the  corporation,
withdraws the shareholder's demand for purchase of the dissenting shares.

ss.  1310.  SUSPENSION OF CERTAIN PROCEEDINGS WHILE LITIGATION IS PENDING

         If litigation is  instituted to test the  sufficiency  or regularity of
the votes of the shareholders in authorizing a  reorganization,  any proceedings
under  Sections 1304 and 1305 shall be suspended  until final  determination  of
such litigation.





                                       G-4

<PAGE>



ss. 1311.  CHAPTER INAPPLICABLE TO CERTAIN CLASSES OF SHARES

         This chapter,  except Section 1312, does not apply to classes of shares
whose  terms and  provisions  specifically  set  forth the  amount to be paid in
respect to such shares in the event of a reorganization or merger.

ss. 1312.  VALIDITY OF REORGANIZATION OR SHORT FORM MERGER, ATTACK ON;
SHAREHOLDERS' RIGHTS; BURDEN OF PROOF

         (a) No shareholder of a corporation  who has a right under this chapter
to demand payment of cash for the shares held by the shareholder  shall have any
right at law or in  equity to  attack  the  validity  of the  reorganization  or
short-form  merger, or to have the reorganization or short-form merger set aside
or rescinded,  except in an action to test whether the number of shares required
to authorize  or approve the  reorganization  have been  legally  voted in favor
thereof;  but any  holder  of  shares  of a class  whose  terms  and  provisions
specifically  set forth the amount to be paid in respect to them in the event of
a reorganization  or short-form merger is entitled to payment in accordance with
those terms and provisions or, if the principal terms of the  reorganization are
approved  pursuant to subdivision (b) of Section 1202, is entitled to payment in
accordance with the terms and provisions of the approved reorganization.

         (b) If one of the parties to a reorganization  or short-form  merger is
directly or indirectly  controlled  by, or under common  control  with,  another
party to the  reorganization  or short-form  merger,  subdivision  (a) shall not
apply to any shareholder of such party who has not demanded  payment of cash for
such  shareholder's  shares  pursuant to this  chapter;  but if the  shareholder
institutes any action to attack the validity of the reorganization or short-form
merger  or to  have  the  reorganization  or  short-form  merger  set  aside  or
rescinded, the shareholder shall not thereafter have any right to demand payment
of cash for the shareholder's  shares pursuant to this chapter. The court in any
action attacking the validity of the  reorganization  or short-form merger or to
have the  reorganization  or short-form  merger set aside or rescinded shall not
restrain  or enjoin the  consummation  of the  transaction  except upon 10 days'
prior  notice to the  corporation  and upon a  determination  by the court  that
clearly no other remedy will adequately  protect the complaining  shareholder or
the class of shareholders of which such shareholder is a member.

         (c) If one of the parties to a reorganization  or short-form  merger is
directly or indirectly  controlled  by, or under common  control  with,  another
party to the  reorganization  or short-form  merger, in any action to attack the
validity  of  the   reorganization   or   short-form   merger  or  to  have  the
reorganization  or short-form  merger set aside or  rescinded,  (1) a party to a
reorganization  or  short-form  merger  which  controls  another  party  to  the
reorganization  or  short-form  merger shall have the burden of proving that the
transaction  is just and  reasonable as to the  shareholders  of the  controlled
party,  and (2) a person who controls  two or more  parties to a  reorganization
shall have the burden of proving that the  transaction is just and reasonable as
to the shareholders of any party so controlled.




                                       G-5

<PAGE>



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


Item 20.  Indemnification of Directors and Officer

         Section 317 of the  California  General  Corporation  Law  authorizes a
court to award,  or a  corporation's  Board of Directors  to grant  indemnity to
directors, officers, employees and other agents of the corporation ("Agents") in
terms   sufficiently  broad  to  permit  such   indemnification   under  certain
circumstances for liabilities  (including  reimbursement for expenses  incurred)
arising under the Securities Act of 1933, as amended.

         The Board of Directors  of  Registrant  has  resolved to indemnify  the
officers and directors of Registrant to the full extent permitted by Section 317
of the California General Corporation Law, and Article VI of Registrant's Bylaws
provides for  indemnification  of officers and directors to the same extent.  On
January  27,  1988,  Registrant's  Board of  Directors  approved  amendments  to
Registrant's  Articles of  Incorporation  providing for the  indemnification  of
directors  and officers of  Registrant  to the fullest  extent  permitted  under
California  law.  These  amendments  limit the  personal  monetary  liability of
directors  in  performing  their duties on behalf of  Registrant,  to the extent
permitted by the California  General  Corporation Law, and permit  Registrant to
indemnify its directors and officers  against certain  liabilities and expenses,
to the  extent  permitted  by the  California  General  Corporation  Law.  These
amendments and the entering into of indemnification  agreements were approved by
Registrant's  shareholders at the annual meeting of  shareholders  held on March
30, 1988. In addition, Registrant maintains a directors' and officers' liability
insurance  policy that  insures  its  directors  and  officers  against  certain
liabilities, including certain liabilities under the Securities Act of 1933.

Item 21.  Exhibits and Financial Statement Schedules

         (a)      The following exhibits are filed as part of this Registration
                  Statement:

<TABLE>
<CAPTION>
<S>                     <C> 

    Exhibit Number                                 Description
- --------------------------------------------------------------------------------------------------

(2)(a)*                 Agreement and Plan of Reorganization, dated July 20, 1998, by
                        and between Santa Barbara Bancorp and Pacific Capital Bancorp
                        (Included as Appendix A to Joint Proxy Statement/Prospectus
                        without certain exhibits).

(2)(b)*                 Agreement and Plan of Merger, dated July 29, 1998, by and
                        between Santa Barbara Bancorp and Pacific Capital Bancorp
                        (Included as Appendix B to Joint Proxy Statement/Prospectus).

(3)(a)**                Certificate of Restated and Amended Articles of Incorporation of
                        Santa Barbara Bancorp.

(3)(b)**                Certificate of Amendment of Restated Articles of Incorporation
                        of Santa Barbara Bancorp as filed with the California Secretary
                        of State on December 30, 1986.

(3)(c)**                Certificate of Amendment of Restated Articles of Incorporation
                        of Santa Barbara Bancorp as filed with the California Secretary
                        of State on April 10, 1989.

(3)(d)**                Certificate of Amendment of Restated Articles of Incorporation
                        of Santa Barbara Bancorp as filed with the California Secretary
                        of State on January 24, 1996.

(3)(e)**                Amended and Restated Bylaws of Santa Barbara Bancorp dated
                        September 25, 1991.






<PAGE>



    Exhibit Number                                 Description
- --------------------------------------------------------------------------------------------------

(3)(f)**                Amendment No. One to Amended and Restated Bylaws of Santa
                        Barbara Bancorp as adopted by the Board of Directors on
                        October 24, 1995.

(3)(g)**                Amendment No. Two to Amended and Restated Bylaws of Santa
                        Barbara Bancorp as adopted by the Board of Directors on
                        December 19, 1995.

(3)(h)**                Amendment No. Three to Amended and Restated Bylaws of
                        Santa Barbara Bancorp as adopted by the Board of Directors on
                        May 20, 1997.

(4)(a)*                 Santa Barbara Bancorp Stock Option Agreement (Included as
                        Appendix C to Joint Proxy Statement/Prospectus).

(4)(b)*                 Pacific Capital Bancorp Stock Option Agreement (Included as
                        Appendix D to Joint Proxy Statement/Prospectus).

(5)*                    Opinion of Jenkens & Gilchrist, a Professional Corporation,
                        regarding legality.

(8)***                  Form of Opinion of Jenkens & Gilchrist, a Professional
                        Corporation, regarding certain federal income tax
                        considerations.

(23)(a)*                Consent of Arthur Andersen LLP.

(23)(b)*                Consent of KPMG Peat Marwick LLP.

(23)(c)*                Consent of Jenkens & Gilchrist, a Professional Corporation
                        (Included in opinion regarding legality).

(23)(d)***              Consent of Jenkens & Gilchrist, a Professional Corporation
                        (Included in opinion regarding certain federal income tax
                        considerations).

(23)(e)*                Consent of Van Kasper & Company.

(23)(f)***              Consent of The Bank Advisory Group, Inc. (Included in Fairness
                        Opinion attached as Appendix F to Joint Proxy
                        Statement/Prospectus).

(24)*                   Power of Attorney (The manually signed power of attorney is set
                        forth in the signature page of the Registration Statement).

(99)(a)*                Form of Proxy Card for Santa Barbara Bancorp Special
                        Meeting.

(99)(b)*                Form of Proxy Card for Pacific Capital Bancorp Special
                        Meeting.

(99)(c)***              Form of Fairness Opinion of Van Kasper & Company (Included
                        as Appendix E to Joint Proxy Statement/Prospectus).

(99)(d)***              Form of Fairness Opinion of The Bank Advisory Group, Inc.
                        (Included as Appendix F to Joint Proxy Statement/Prospectus).






<PAGE>



    Exhibit Number                                 Description
- --------------------------------------------------------------------------------------------------

(99)(e)*                Excerpts from the California General Corporation Law
                        (dissenters rights) (Included as Appendix G to Joint Proxy
                        Statement/Prospectus).
<FN>
- -----------------
*        Filed herewith.
**       Incorporated by reference.
***      To be filed by Amendment.

         Note:    The Registrant agrees to furnish supplementally a copy of any omitted schedule to the Commission
                  upon request.

         Note:    No long-term debt  instrument  issued by Santa Barbara Bancorp
                  exceeds 10% of the consolidated  total assets of Santa Barbara
                  Bancorp and its  subsidiaries.  In accordance  with  paragraph
                  4(iii) of Item 601 of Regulation  S-K,  Santa Barbara  Bancorp
                  will  furnish  to the  Commissioner  upon  request  copies  of
                  long-term debt instruments and related agreements.

         (b)      No financial statement schedules are required to be filed herewith pursuant to Item 21(b) or (c) of this
                  Form.

</FN>
</TABLE>

Item 22.  Undertakings

         (1) The undersigned  Registrant hereby undertakes:  (a) To file, during
any period in which offers or sales are being made, a  post-effective  amendment
to this  registration  statement:  (i) To include  any  prospectus  required  by
section  10(a)(3)  of the  Securities  Act  of  1933;  (ii)  To  reflect  in the
prospectus  any  facts  or  events  arising  after  the  effective  date  of the
registration  statement (or the most recent  post-effective  amendment  thereof)
which,  individually or in the aggregate,  represent a fundamental change in the
information  set  forth  in  the  registration  statement;  notwithstanding  the
foregoing,  any  increase or decrease  in volume of  securities  offered (if the
total  dollar  value of  securities  offered  would not  exceed  that  which was
registered) and any deviation from the low or high end of the estimated  maximum
offering  range  may be  reflected  in the  form of  prospectus  filed  with the
Commission  pursuant to Rule 424(b) (ss.  230.424(b) of this chapter) if, in the
aggregate,  the changes in volume and price  represent no more than a 20% change
in the  maximum  aggregate  offering  price  set  forth in the  "Calculation  of
Registration  Fee"  table  in the  effective  registration  statement;  (iii) To
include any material  information  with respect to the plan of distribution  not
previously  disclosed in the  registration  statement or any material  change to
such  information in the  registration  statement;  (b) That, for the purpose of
determining   any  liability  under  the  Securities  Act  of  1933,  each  such
post-effective  amendment  shall be  deemed to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be in the initial  bona fide  offering  thereof;
(c) To remove from  registration by means of a  post-effective  amendment any of
the securities  being  registered  which remain unsold at the termination of the
offering.

         (2) The undersigned  Registrant hereby undertakes that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

         (3) The undersigned Registrant hereby undertakes to deliver or cause to
be delivered with the prospectus,  to each person to whom the prospectus is sent
or given,  the latest annual report to security  holders that is incorporated by
reference  in  the  prospectus  and  furnished   pursuant  to  and  meeting  the
requirements  of Rule 14a-3 or Rule 14c-3 under the  Securities  Exchange Act of
1934;  and,  where  interim  financial  information  required to be presented by
Article 3 of Regulations S-X are not set forth in the prospectus, to deliver, or
cause to be delivered to  each person to whom  the prospectus is sent  or given,





<PAGE>



the latest  quarterly  report that is specifically  incorporated by reference in
the prospectus to provide such interim financial information.

         (4) The undersigned Registrant hereby undertakes as follows: that prior
to any public reoffering of the securities registered hereunder through use of a
prospectus  which is a part of this  registration  statement,  by any  person or
party who is deemed to be an underwriter  within the meaning of Rule 145(c), the
issuer  undertakes that such reoffering  prospectus will contain the information
called for by the  applicable  registration  form with respect to reofferings by
persons who may be deemed  underwriters,  in addition to the information  called
for by the other items of the applicable form.

         (5) The Registrant  undertakes that every  prospectus (a) that is filed
pursuant to paragraph (4)  immediately  preceding,  or (b) that purports to meet
the  requirements of section  10(a)(3) of the Securities Act of 1933 and is used
in connection with an offering of securities  subject to Rule 415, will be filed
as a part of an amendment  to the  registration  statement  and will not be used
until such amendment is effective,  and that,  for purposes of  determining  any
liability under the Securities Act of 1933, each such  post-effective  amendment
shall be deemed to be a new  registration  statement  relating to the securities
offered therein, and the offering of such securities at the time shall be deemed
to be the initial bona fide offering thereof.

         (6)  Insofar  as  indemnification  for  liabilities  arising  under the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the Registrant  pursuant to the foregoing  provisions,  or otherwise,
the  Registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the  Act  and,  therefore,  unenforceable.  In the  event  that a  claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  Registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of  appropriate  jurisdiction  the  question  of whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

         (7) The undersigned Registrant hereby undertakes to respond to requests
for information  that is incorporated by reference into the prospectus  pursuant
to Item 4, 10(b), 11, or 13 of this form,  within one business day of receipt of
such  request,  and to send the  incorporated  documents  by first class mail or
other equally  prompt means.  This includes  information  contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.

         (8) The undersigned  Registrant hereby undertakes to supply by means of
a  post-effective  amendment all information  concerning a transaction,  and the
company being  acquired  involved  therein,  that was not the subject of and not
included in the registration statement when it became effective.






<PAGE>



                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
registrant  has duly  caused  this  Registration  Statement  to be signed on its
behalf  by  the  undersigned,  thereunto  duly  authorized,  in  Santa  Barbara,
California, on September 22, 1998.

                                     SANTA BARBARA BANCORP



                                     By:   /s/ David W. Spainhour
                                           -------------------------------------
                                           David W. Spainhour
                                           President and Chief Executive Officer

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the date indicated.  Each person whose signature appears below
in so signing  also makes,  constitutes  and appoints  Donald  Lafler and Jay D.
Smith, jointly and severally, his true and lawful  attorneys-in-fact,  with full
power of substitution and resubstitution, for him or her and in his or her name,
place and stead,  in any and all  capacities,  to execute  and cause to be filed
with  the  Securities  and  Exchange  Commission  any  and  all  amendments  and
post-effective  amendments to this Registration Statement, with exhibits thereto
and   other   documents   in   connection   therewith,    granting   unto   said
attorneys-in-fact  full power and authority to do and perform each and every act
and thing  requisite  and  necessary  to be done,  as fully to all  intents  and
purposes  as he or she might or could do in  person,  and  hereby  ratifies  and
confirms all that said  attorneys-in-fact  or his substitute or substitutes  may
lawfully do or cause to be done by virtue hereof.

<TABLE>
<CAPTION>
<S>                                           <C>                                             <C> 

               Signature                                           Title                                Date
               ---------                                           -----                                ----

/s/ Donald M. Anderson                        Chairman of the Board and Director              September 22, 1998
- --------------------------------------
Donald M. Anderson

/s/ David W. Spainhour                        President, Chief Executive Officer and          September 22, 1998
- --------------------------------------        Director (Principal Executive Officer)
David W. Spainhour

/s/ William S. Thomas, Jr.                    Vice Chairman, Chief Operating Officer          September 22, 1998
- --------------------------------------        and Director
William S. Thomas, Jr.


/s/ Donald Lafler                             Senior Vice President and Chief Financial       September 22, 1998
- --------------------------------------        Officer (Principal Financial Officer)
Donald Lafler

/s/ Edward J. Czajka                          Vice President (Principal Accounting            September 22, 1998
- --------------------------------------        Officer)
Edward J. Czajka 

/s/ Frank Barranco, M.D.                      Director                                        September 22, 1998
- --------------------------------------
Frank Barranco, M.D.


/s/ Edward E. Birch                           Director                                        September 22, 1998
- --------------------------------------
Edward E. Birch






<PAGE>





/s/ Richard M. Davis                          Director                                        September 22, 1998
- ---------------------------------------
Richard M. Davis

/s/ Anthony Guntermann                        Director                                        September 22, 1998
- ---------------------------------------
Anthony Guntermann


/s/ Dale E. Hanst                             Director                                        September 22, 1998
- ---------------------------------------
Dale E. Hanst

/s/ Harry B. Powell                           Director                                        September 22, 1998
- ---------------------------------------
Harry B. Powell

/s/ Terrill F. Cox                            Director                                        September 22, 1998
- ---------------------------------------
Terrill F. Cox

/s/ Susan Trescher                            Director                                        September 22, 1998
- ---------------------------------------
Susan Trescher



</TABLE>





<PAGE>

<TABLE>
<CAPTION>
<S>                <C> 


                                INDEX TO EXHIBITS

Number                                               Exhibit
- ------                                               -------

(2)(a)            Agreement and Plan of Reorganization, dated July 20, 1998, by and between Santa Barbara Bancorp
                  and Pacific Capital Bancorp (Included as Appendix A to the Joint Proxy Statement/ Prospectus without
                  certain exhibits).

(2)(b)            Agreement  and Plan of  Merger,  dated July 29,  1998,  by and between  Santa  Barbara  Bancorp and
                  Pacific  Capital  Bancorp (Included as Appendix B to the Joint Proxy Statement/Prospectus).

(3)(a)            Certificate of Restated and Amended Articles of Incorporation of Santa Barbara Bancorp is
                  incorporated by reference from the Santa Barbara Bancorp Registration Statement on Form S-4
                  (Registration No. 33-19181), dated December 16, 1987.

(3)(b)            Certificate of Amendment of Restated Articles of Incorporation of Santa Barbara Bancorp, as filed with
                  the California Secretary of State on December 30, 1986, is incorporated by reference from the Santa
                  Barbara Bancorp Registration Statement on Form S-4 (Registration No. 33-19181), dated December 16,
                  1987.

(3)(c)            Certificate of Amendment of Restated Articles of Incorporation of Santa Barbara Bancorp, as filed with
                  the California Secretary of State on April 10, 1989, is incorporated by reference from the Santa
                  Barbara Bancorp Annual Report on Form 10-K for the fiscal year ended December 31, 1997.

(3)(d)            Certificate of Amendment of Restated Articles of Incorporation of Santa Barbara Bancorp, as filed with
                  the California Secretary of State on January 24, 1996, is incorporated by reference from the Santa
                  Barbara Bancorp Annual Report on Form 10-K for the fiscal year ended December 31, 1995.

(3)(e)            Amended and Restated Bylaws of Santa Barbara Bancorp, dated September 25, 1991, is incorporated
                  by reference from the Santa Barbara Bancorp Quarterly Report on Form 10-Q for the quarter ended
                  September 30, 1991.

(3)(f)            Amendment No. One to Amended and Restated Bylaws of Santa Barbara Bancorp, as adopted by the
                  Board of Directors of Santa Barbara Bancorp on October 24, 1995, is incorporated by reference from
                  the Santa Barbara Bancorp Annual Report on Form 10-K for the fiscal year ended December 31, 1995.

(3)(g)            Amendment No. Two to Amended and Restated Bylaws of Santa Barbara Bancorp, as adopted by the
                  Board of Directors of Santa Barbara Bancorp on December 19, 1995, is incorporated by reference from
                  the Santa Barbara Bancorp Annual Report on Form 10-K for the fiscal year ended December 31, 1997.

(3)(h)            Amendment No. Three to Amended and Restated Bylaws of Santa Barbara Bancorp, as adopted by the
                  Board of Directors of Santa Barbara Bancorp on May 20, 1997, is incorporated by reference from the
                  Santa Barbara Bancorp Annual Report on Form 10-K for the fiscal year ended December 31, 1997.

(4)(a)            Santa Barbara Bancorp Stock Option Agreement (Included as Appendix C to Joint Proxy Statement/
                  Prospectus).

(4)(b)            Pacific Capital Bancorp Stock Option Agreement (Included as Appendix D to Joint Proxy Statement/
                  Prospectus).

(5)               Opinion of Jenkens & Gilchrist, a Professional Corporation.

(8)               Form of Opinion of Jenkens & Gilchrist, a Professional Corporation, regarding certain federal income
                  tax considerations.






<PAGE>



(23)(a)           Consent of Arthur Andersen LLP.

(23)(b)           Consent of KPMG Peat Marwick LLP.

(23)(c)           Consent of Jenkens & Gilchrist, a Professional Corporation (Included in opinion regarding legality).

(23)(d)           Consent of Jenkens & Gilchrist, a Professional Corporation (Included in opinion regarding certain
                  federal income tax considerations).

(23)(e)           Consent of Van Kasper & Company.

(23)(f)           Consent of The Bank Advisory Group, Inc. (Included in Fairness Opinion attached as Appendix F to
                  Joint Proxy Statement/Prospectus).

(24)              Power of Attorney (The manually signed power of attorney is set forth in the signature page of the
                  Registration Statement).

(99)(a)           Form of Proxy Card for Santa Barbara Bancorp Special Meeting.

(99)(b)           Form of Proxy Card for Pacific Capital Bancorp Special Meeting.

(99)(c)           Form of Fairness Opinion of Van Kasper & Company (Included in Appendix E to Joint Proxy
                  Statement/ Prospectus).

(99)(d)           Form of Fairness Opinion of The Bank Advisory Group, Inc. (Included in Appendix F to Joint Proxy
                  Statement/Prospectus).

(99)(e)           Excerpts from the California General Corporation Law (dissenters rights) (Included in Appendix G to
                  Joint Proxy Statement/Prospectus).



</TABLE>






                                   Exhibit (5)








<PAGE>



         [Letterhead of Jenkens & Gilchrist, a Professional Corporation]





                               September 23, 1998



Board of Directors
Santa Barbara Bancorp
1021 Anacapa Street
Santa Barbara, California 93101

         Re:      Santa Barbara Bancorp - Registration Statement on Form S-4:


Ladies and Gentlemen:

         We are acting as special counsel to Santa Barbara Bancorp, a California
corporation  (the   "Corporation"),   in  connection  with  preparation  of  the
Corporation's  Registration  Statement on Form S-4, and any  amendments  thereto
(the  "Registration  Statement"),  to be filed with the  Securities and Exchange
Commission under the Securities Act of 1933, as amended (the "Securities  Act"),
to register up to 9,345,000  shares of Common  Stock,  no par value (the "Common
Stock"),  of the Corporation to be issued in connection  with the  Corporation's
acquisition of Pacific Capital Bancorp,  a California  corporation,  through the
merger of Pacific Capital Bancorp with and into the Corporation (the "Merger").

         You have  requested  the  opinion of this firm with  respect to certain
legal aspects of the proposed  issuance of Common Stock  pursuant to the Merger.
For the purpose of rendering the opinion set forth herein,  we have examined and
relied upon the original,  or copies identified to our satisfaction,  of (1) the
Articles  of  Incorporation  and the Bylaws of the  Corporation,  as amended and
presently in effect; (2) minutes and records of the corporate proceedings of the
Corporation  with respect to the  issuance of the Common  Stock  pursuant to the
Merger,  and  related  matters;  (3) the  Registration  Statement  and  exhibits
thereto; and (4) such other documents, instruments and records as we have deemed
necessary for the expression of the opinions herein contained.

         In  making  the  foregoing  examinations,   we  have  assumed,  without
independent   investigation,   the   genuineness   of  all  signatures  and  the
authenticity of all documents  submitted to us as originals,  and the conformity
to  original  documents  of  all  documents  submitted  to  us as  certified  or
photostatic  copies.  As to various  questions of fact material to this opinion,
and as to the content and form of the  Articles  of  Incorporation,  the Bylaws,
minutes,   records,   resolutions   and  other  documents  or  writings  of  the
Corporation, we have relied, to the  extent we deem reasonably appropriate, upon





<PAGE>



representations  or certificates of officers or directors of the Corporation and
upon  documents,  records and  instruments  furnished to us by the  Corporation,
without independent check or verification of their accuracy.

         Based  upon the  foregoing,  we are of the  opinion  that the shares of
Common  Stock to be  issued  in the  Merger  by the  Corporation  have been duly
authorized  and,  when  issued  and  delivered  in the  manner  and on the terms
described  in the  Registration  Statement  (after  and while  the  Registration
Statement is declared  effective  under the  Securities  Act),  will be duly and
validly issued, fully paid and nonassessable.

         Our opinion  expressed herein is limited to those matters expressly set
forth  herein,  and no opinion  may be implied or  inferred  beyond the  matters
expressly stated herein.  We hereby disclaim any obligation to notify any person
or entity  after the date hereof if any change in fact or law should  change our
opinion with respect to any matter set forth in this letter.

         We hereby  consent to the  filing of this  opinion as an exhibit to the
Registration  Statement and to  references to our firm under the caption  "Legal
Matters" in the Joint Proxy Statement  Prospectus  included in or made a part of
the Registration Statement. In giving this consent, we do not admit that we come
within the category of persons whose consent is required  under Section 7 of the
Securities  Act or the Rules and  Regulations  of the  Securities  and  Exchange
Commission thereunder.

                                                     Very truly yours,

                                                     JENKENS & GILCHRIST,
                                                     a Professional Corporation



                                                     By:  /s/ Charles E. Greef
                                                          ----------------------
                                                          Charles E. Greef
                                                          Authorized Signatory










                                   Exhibit (8)








<PAGE>



         [Letterhead of Jenkens & Gilchrist, a Professional Corporation]



                               September ___, 1998




Santa Barbara Bancorp
1021 Anacapa Street
Santa Barbara, California 93101-2036


Ladies and Gentlemen:

         We have  acted  as  counsel  to Santa  Barbara  Bancorp,  a  California
corporation  ("SBB"),  in connection  with the proposed merger (the "Merger") of
Pacific Capital Bancorp, a California corporation ("Pacific"), with and into SBB
and the registration of 9,345,000 shares of the common stock of SBB ("SBB Common
Stock") that may be issued pursuant to the Agreement and Plan of  Reorganization
(the  "Reorganization  Agreement")  dated July 20, 1998, all as described in the
Form  S-4  registration   statement  filed  with  the  Securities  and  Exchange
Commission (the  "Commission") on September 23, 1998 (as thereafter amended from
time  to  time  and  together  with  all  exhibits  thereto,  the  "Registration
Statement"). Except as otherwise indicated,  capitalized terms used herein shall
have the meanings assigned to them in the Registration Statement.

         Set forth below are our opinions and the assumptions and documents upon
which we have relied in rendering our opinions.

         A.       Documents Reviewed

         In connection  with the opinions  rendered  below, we have reviewed and
relied upon the following documents:

                  1.       the Registration Statement,

                  2.       the Reorganization Agreement,

                  3. the  Agreement  and Plan of Merger by and  between  SBB and
Pacific dated as of July 29, 1998 )(the "Merger Agreement"),

                  4. the  Certificates  of Pacific  and SBB  attached  hereto as
Exhibit "A" and Exhibit "B," respectively  (collectively,  the  "Certificates"),
and






<PAGE>



                  5.  such  other  documents  as we  have  deemed  necessary  or
appropriate for purposes of this opinion.

         B.       Assumptions

         In connection with the opinions rendered below, we have assumed:

                  1. that all  signatures on all  documents  submitted to us are
genuine, that all documents submitted to us as originals are authentic, that all
documents submitted to us as copies are accurate, that all information submitted
to us is accurate and complete,  and that all persons  executing and  delivering
originals  or copies of  documents  examined by us are  competent to execute and
deliver such documents.

                  2. that the Merger will be consummated as  contemplated in the
Registration Statement and without waiver of any material provision thereof.

         C.       Opinions

         Based solely upon the documents and  assumptions  set forth above,  and
conditioned   upon  the   initial  and   continuing   accuracy  of  the  factual
representations  set forth in the  Certificates  as of the date hereof and as of
the date of the Effective Time of the Merger,  it is our opinion that the Merger
will be a reorganization  within the meaning of section 368(a)(1)(A) of the Code
and the following federal income tax consequences will result:

                  (a) no gain or loss will be recognized  for federal income tax
purposes by the holders of Pacific  Common  Stock upon the receipt of SBB Common
Stock solely in exchange for such Pacific Common Stock (except to the extent, if
any, that cash is received in lieu of fractional shares);

                  (b) the aggregate  tax basis of the SBB Common Stock  received
by Pacific  stockholders in the Merger  (including any fractional  shares of SBB
Common Stock) will be the same as the aggregate tax basis of the Pacific  Common
Stock surrendered in exchange therefor;

                  (c) the  holding  period of the SBB Common  Stock  received by
each Pacific  stockholder  in the Merger will include the holding  period of the
shares of Pacific Common Stock surrendered in exchange therefor;

                  (d) cash  payments  received by the holders of Pacific  Common
Stock in lieu of  fractional  shares of SBB  Common  Stock will be treated as if
such fractional shares had been issued in the Merger and then redeemed by SBB. A
Pacific  stockholder  receiving  such cash will recognize gain or loss upon such
payment, measured by the difference (if any) between the amount of cash received
and the basis  allocated to such  fractional  share.  The gain or loss should be
capital gain or loss,  provided  that each such  fractional  share of SBB Common
Stock was held as a capital asset at the Effective Time of the Merger;






<PAGE>



                  (e) a holder of Pacific Common Stock who exercises dissenters'
rights  with  respect to a share of  Pacific  Common  Stock and  receives a cash
payment for such share generally should recognize  capital gain or loss (if each
such  share was held as a capital  asset at the  Effective  Time of the  Merger)
measured by the difference  between the  stockholder's  basis in such shares and
the amount of cash  received,  provided  that such  payment is not  "essentially
equivalent  to a  dividend"  within the meaning of Section 302 of the Code after
giving effect to the constructive  ownership rules of the Code (collectively,  a
"Dividend Equivalent Transaction").  A sale of shares pursuant to an exercise of
dissenters' rights generally will not be a Dividend  Equivalent  Transaction if,
as a result of such exercise,  the stockholder exercising the dissenters' rights
owns no shares of capital stock of SBB (either actually or constructively within
the meaning of Section 318 of the Code) immediately after the Merger.

                  (f) the  descriptions  of the law  and the  legal  conclusions
contained  in the  Registration  Statement  under the caption  "Certain  Federal
Income Tax  Considerations"  are correct in all  material  respects and that the
discussion  thereunder  represents  an  accurate  summary of the  United  States
federal income tax  consequences  of the Merger that are material to SBB and the
shareholders of SBB.

         D.       Limitations

                  1. Except as otherwise  indicated,  the opinions  contained in
                  this  letter  are  based  upon the  Code  and its  legislative
                  history, the Treasury regulations  promulgated thereunder (the
                  "Regulations"), judicial decisions, and current administrative
                  rulings and practices of the Internal Revenue Service,  all as
                  in effect on the date of this letter. These authorities may be
                  amended or revoked at any time.  Any such  changes  may or may
                  not be retroactive  with respect to transactions  entered into
                  or contemplated  prior to the effective date thereof and could
                  significantly  alter the  conclusions  reached in this letter.
                  There  is  no  assurance  that   legislative,   judicial,   or
                  administrative changes will not occur in the future. We assume
                  no  obligation  to update or modify this letter to reflect any
                  developments that may occur after the date of this letter.

                  2. The opinions  expressed  herein  represent  counsel's  best
                  legal  judgment and are not binding upon the Internal  Revenue
                  Service or the courts and are dependent  upon the accuracy and
                  completeness  of the  documents  we have  reviewed  under  the
                  circumstances,   the   assumptions   made   and  the   factual
                  representations  contained in the Certificates.  To the extent
                  that any of the factual representations  provided to us in the
                  Certificates  is with respect to matters set forth in the Code
                  or the  Regulations,  we have  reviewed  with the  individuals
                  making such factual  representations  the relevant portions of
                  the Code and the  applicable  Regulations  and are  reasonably
                  satisfied that such individuals understand such provisions and
                  are capable of making such  factual  representations.  We have
                  made no independent  investigation  of the facts  contained in
                  the documents  and  assumptions  set forth above,  the factual
                  representations   set  forth  in  the   Certificates   or  the
                  Registration  Statement.  No facts have come to our attention,
                  however, that would  cause us  to  question the  accuracy  and





<PAGE>



                  completeness of such facts or documents in a material way. Any
                  material  inaccuracy  or  incompleteness  in  these documents,
                  assumptions or factual representations (whether made by any or
                  all  of  Pacific  or  SBB) could adversely affect the opinions
                  stated herein.

                  3.  We  are  expressing  opinions  only  as to  those  matters
                  expressly set forth in Section C above.  No opinion  should be
                  inferred  as to any  other  matters.  This  opinion  does  not
                  address the various state,  local or foreign tax  consequences
                  that may  result  from the  Merger or the  other  transactions
                  contemplated by the Merger Agreement.  In addition, no opinion
                  is expressed as to any federal  income tax  consequence of the
                  Merger or the other  transactions  contemplated  by the Merger
                  Agreement  except as specifically  set forth herein,  and this
                  opinion  may not be relied  upon  except  with  respect to the
                  consequences specifically discussed herein.

                  4. This  opinion  letter is issued  for your  benefit  and the
                  shareholders  of SBB and no other  person or  entity  may rely
                  hereon  without  our express  written  consent.  This  opinion
                  letter  may  be  filed  as  an  exhibit  to  the  Registration
                  Statement. Furthermore, we consent to the reference to Jenkens
                  & Gilchrist,  a Professional  Corporation,  under the captions
                  "Legal    Matters"   and   "Certain    Federal    Income   Tax
                  Considerations."  In giving  this  consent,  we do not thereby
                  admit that we are within the category of persons whose consent
                  is required  under section 7 of the Securities Act of 1933, as
                  amended,  or the  rules  and  regulations  of  the  Commission
                  promulgated thereunder.

                                                     Very truly yours,

                                                     JENKENS & GILCHRIST,
                                                     a Professional Corporation



                                                     By:
                                                            --------------------









                                 Exhibit (23)(a)








<PAGE>



                       [Letterhead of Arthur Anderson LLP]





                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


         As   independent   public   accountants,   we  hereby  consent  to  the
incorporation  by reference in this  registration  statement of our report dated
January 30, 1998,  included in Santa  Barbara  Bancorp's  Form 10-K for the year
ended  December 31, 1997,  and to all  references  to our Firm  included in this
registration statement.




                                                         /s/ Arthur Anderson LLP
                                                         -----------------------
                                                         ARTHUR ANDERSEN LLP

Los Angeles, California
September 21, 1998









                                 Exhibit (23)(b)








<PAGE>



                      [Letterhead of KPMG Peat Marwick LLP]





                         CONSENT OF INDEPENDENT AUDITORS




The Board of Directors
Pacific Capital Bancorp:



         We consent to incorporation by reference in the registration  statement
on Form S-4 of Santa  Barbara  Bancorp of our report  dated  January  23,  1998,
relating  to the  consolidated  balance  sheets of Pacific  Capital  Bancorp and
subsidiaries  as of  December  31, 1997 and 1996,  and the related  consolidated
statements of income, shareholders' equity, and cash flows for each of the years
in the three-year period ended December 31, 1997.

         In addition,  we consent to the reference to our firm under the heading
"Experts"  in the Joint  Proxy  Statement/Prospectus  which is  included  in the
registration statement on Form S-4.


                                                     /s/ KPMG Peat Marwick LLP
                                                     ---------------------------
                                                     KPMG Peat Marwick LLP


Mountain View, California
September 21, 1998








                                 Exhibit (23)(e)






<PAGE>



                      [Letterhead of Van Kasper & Company]




                         CONSENT OF VAN KASPER & COMPANY



         We hereby consent to the inclusion of our form of opinion letter to the
Board of Directors of Pacific Capital Bancorp ("Pacific  Capital") as Appendix E
to the Registration  Statement on Form S-4  ("Registration  Statement") of Santa
Barbara  Bancorp  ("Santa  Barbara") and to all  references to our firm and such
opinion in the Joint Proxy  Statement/Prospectus  included in such  Registration
Statement.  In giving  such  consent,  we do not admit  that we come  within the
category of persons whose consent is required under,  and we do not admit and we
disclaim that we are "experts"  for purposes of the  Securities  Act of 1933, as
amended, and the rules and regulations promulgated thereunder.


                                                     /s/ Van Kasper & Company
                                                     ---------------------------
                                                     VAN KASPER & COMPANY

San Francisco, California
September 22, 1998






                                 Exhibit (99)(a)








<PAGE>



PROXY

                              SANTA BARBARA BANCORP

                         SPECIAL MEETING OF SHAREHOLDERS
                          to be held December 15, 1998

                      THIS REVOCABLE PROXY IS SOLICITED BY
                 THE BOARD OF DIRECTORS OF SANTA BARBARA BANCORP

         The  undersigned  shareholder  of Santa Barbara  Bancorp,  a California
corporation ("SBB"), hereby appoints David W. Spainhour,  William S. Thomas, Jr.
and Jay D. Smith (the "Proxies"),  and any of them, with full power to act alone
and  with  full  power  of  substitution  and  revocation,  as  proxies  of  the
undersigned to attend the Special  Meeting of  Shareholders of SBB to be held at
the Lobero  Theater,  33 East  Canon  Perdido,  Santa  Barbara,  California,  on
Tuesday,  December  15, 1998 at 2:00 p.m.  local time,  and any  adjournment  or
postponement  thereof, and to vote the number of shares the undersigned would be
entitled to vote if  personally  present  upon the  following  items and to vote
according  to their  discretion  on any  other  matter  which  may  properly  be
presented for action at said meeting or any adjournment or postponement thereof:

1.       Merger. To adopt and approve the Agreement and Plan of  Reorganization,
         dated July 20,  1998,  by and between SBB and Pacific  Capital  Bancorp
         ("Pacific"),  and an  Agreement  and  Plan of  Merger  between  SBB and
         Pacific and the transactions contemplated thereby, including the Merger
         of Pacific with and into SBB.

           [   ]    For              [   ]    Against           [   ]   Abstain

2.       Amendment  to Bylaws.  To approve an  amendment to the Bylaws of SBB to
         increase  the range of the  authorized  number of directors of SBB from
         (i) a minimum  of seven (7)  persons  and a maximum  of  thirteen  (13)
         person to (ii) a minimum of nine (9) persons to a maximum of  seventeen
         (17) persons,  with the exact number of directors  within the foregoing
         range to be determined by the Board of Directors.

           [   ]    For              [   ]    Against           [   ]   Abstain

3.       Amendment to Articles of Incorporation.  To approve an amendment to the
         Articles of Incorporation of SBB to eliminate  cumulative voting in the
         election of directors.

           [   ]    For              [   ]    Against           [   ]   Abstain

4.       Other Business. In their discretion, the Proxies are authorized to vote
         upon such other  business  as may  properly  come  before  the  Special
         Meeting  and at any and all  adjournments  thereof,  including  matters
         incidental  to the  conduct  of  the  Special  Meeting.  The  Board  of
         Directors at present  knows of no other  business to be presented by or
         on behalf of SBB or the Board of Directors at the Special Meeting.





<PAGE>



         The undersigned hereby ratifies and confirms all that said Proxies,  or
any of them or their substitutes,  may lawfully do or cause to be done by virtue
hereof,  and  acknowledges  receipt  of the  Notice of said  Special  Meeting of
Shareholders and the Joint Proxy Statement/Prospectus accompanying it.

         This Proxy will be voted as specified by you above,  or if no choice is
specified, this Proxy will be voted "For" the Proposals set forth above.

         Please  sign  exactly as name  appears.  When  shares are held by joint
tenants,  both should sign. When signing as attorney,  executor,  administrator,
trustee or guardian,  please give full title as such. If a  corporation,  please
provide  full  corporate  name and name and capacity of the  authorized  officer
signing  on  behalf  of  such  corporation.  If a  partnership,  please  provide
partnership  name and name and capacity of the person  signing on behalf of such
partnership.


I/We do [___]   - or -    I/We do not [___]  plan to attend the Special Meeting.


Dated:_________________________, 1998


                                          Signature:____________________________

                                          Signature:____________________________
                                                          (If held jointly)


SHAREHOLDERS ARE URGED TO MARK, DATE, SIGN AND RETURN THIS PROXY
IN THE ENVELOPE PROVIDED, WHICH REQUIRES NO POSTAGE IF MAILED IN
THE UNITED STATES.







                                 Exhibit (99)(b)








<PAGE>



PROXY

                             PACIFIC CAPITAL BANCORP

                         SPECIAL MEETING OF SHAREHOLDERS
                          to be held December ___, 1998

                      THIS REVOCABLE PROXY IS SOLICITED BY
                THE BOARD OF DIRECTORS OF PACIFIC CAPITAL BANCORP

         The undersigned  shareholder of Pacific Capital  Bancorp,  a California
corporation  ("Pacific"),  hereby appoints William J. Keller,  William S. McAfee
and  William H. Pope (the  "Proxies"),  and any of them,  with full power to act
alone and with full  power of  substitution  and  revocation,  as proxies of the
undersigned to attend the Special  Meeting of Shareholders of Pacific to be held
at Corral de Tierra Country Club, Salinas,  California, on December ___, 1998 at
_____ p.m. local time, and any adjournment or postponement  thereof, and to vote
the number of shares the  undersigned  would be entitled  to vote if  personally
present upon the following  items and to vote  according to their  discretion on
any other matter  which may properly be presented  for action at said meeting or
any adjournment or postponement thereof:

1.       Merger. To adopt and approve the Agreement and Plan of  Reorganization,
         dated July 20, 1998, by and between  Pacific and Santa Barbara  Bancorp
         ("SBB"),  and an Agreement and Plan of Merger  between  Pacific and SBB
         and the  transactions  contemplated  thereby,  including  the Merger of
         Pacific with and into SBB.

           [   ]    For              [   ]    Against           [   ]   Abstain

2.       Other Business. In their discretion, the Proxies are authorized to vote
         upon such other  business  as may  properly  come  before  the  Special
         Meeting  and at any and all  adjournments  thereof,  including  matters
         incidental  to the  conduct  of  the  Special  Meeting.  The  Board  of
         Directors at present  knows of no other  business to be presented by or
         on behalf of Pacific or the Board of Directors at the Special Meeting.

         The undersigned hereby ratifies and confirms all that said Proxies,  or
any of them or their substitutes,  may lawfully do or cause to be done by virtue
hereof,  and  acknowledges  receipt  of the  Notice of said  Special  Meeting of
Shareholders and the Joint Proxy Statement/Prospectus accompanying it.

         This Proxy will be voted as specified by you above,  or if no choice is
specified, this Proxy will be voted "For" the Proposal set forth above.

         Please  sign  exactly as name  appears.  When  shares are held by joint
tenants,  both should sign. When signing as attorney,  executor,  administrator,
trustee or guardian,  please give full title as such. If a  corporation,  please
provide full corporate  name and name  and  capacity of  the  authorized officer





<PAGE>


signing  on  behalf  of  such  corporation.  If a  partnership,  please  provide
partnership  name and name and capacity of the person  signing on behalf of such
partnership.



I/We do [___]   - or -    I/We do not [___]  plan to attend the Special Meeting.


Dated:_________________________, 1998


                                          Signature:____________________________

                                          Signature:____________________________
                                                        (If held jointly)


SHAREHOLDERS ARE URGED TO MARK, DATE, SIGN AND RETURN THIS PROXY
IN THE ENVELOPE PROVIDED, WHICH REQUIRES NO POSTAGE IF MAILED IN
THE UNITED STATES.








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