US BANCORP /OR/
S-4, 1996-04-10
NATIONAL COMMERCIAL BANKS
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<PAGE>

              AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION

             ON APRIL 10, 1996                REGISTRATION NO. 33-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                      SECURITIES  AND  EXCHANGE  COMMISSION
                             WASHINGTON, D.C. 20549

                            ------------------------
                                    FORM S-4
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                            ------------------------

                                  U. S. BANCORP
             (Exact name of Registrant as specified in its charter)

            OREGON                      6711           93-0571730
(State or other jurisdiction      (Primary Standard      (I.R.S.  Employer
 of incorporation or              Industrial              Identification No.)
 organization)                     Classification Code)

                  111 S.W. FIFTH AVENUE, PORTLAND, OREGON 97204
                                 (503) 275-6111
              (Address, including zip code, and telephone number,
        including area code, of registrant's principal executive offices)

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

                                 DWIGHT V. BOARD
                                  U. S. BANCORP
                  111 S.W. Fifth Avenue, Portland, Oregon 97204
                                 (503) 275-3706

(Name, address, including zip code, and telephone number, including area code,
of agent for service)

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

                                 Copies to:

     JOHN J. DeMOTT, ESQ.                         EDWARD D. HERLIHY
     Miller, Nash, Wiener,                         Wachtell, Lipton,
      Hager & Carlsen                               Rosen & Katz
     111 S.W. Fifth Avenue, Suite 3500             51 West 52nd Street
     Portland, Oregon  97204                 New York, New York  10019

<PAGE>

                         CALCULATION OF REGISTRATION FEE

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>

                                          Proposed Maximum    Proposed Maximum
Title of Securities    Amount To Be       Offering Price         Aggregate           Amount of
To be Registered      Registered (1)       Per Share         Offering Price (2)   Registration Fee
- -----------------------------------------------------------------------------------------------------
<S>                   <C>                   <C>                  <C>               <C>
Common Stock, $5
  par value         10,202,939 shares           (2)             $338,979,230       $116,889.39
</TABLE>

(1)  This Registration Statement covers the maximum number of shares of the
     Registrant's common stock issuable pursuant to the transaction to which
     this Registration Statement relates.

(2)  The registration fee was computed pursuant to Rule 457(f)(1) and
     Rule 457(c) under the Securities Act of 1933, as amended, based on the
     average of the high ($31.75) and low ($31.375) sales prices of California
     Bancshares, Inc. ("CBI") common stock as reported on the NASDAQ National
     Market System on April 3, 1996, multiplied by the maximum number of shares
     to be canceled in the merger (10,739,936 shares of CBI common stock,
     consisting of 10,107,647 shares of CBI common stock outstanding at April 3,
     1996, and 632,289 shares of CBI common stock issuable upon exercise of
     stock options outstanding at April 3, 1996).

(3)  $66,049.53 of the registration fee was previously paid by CBI in connection
     with its filing of preliminary proxy materials with the Securities and
     Exchange Commission under cover of Schedule 14A on March 29, 1996.

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

     APPROXIMATE DATE OF COMMENCEMENT OF THE PROPOSED SALE OF THE SECURITIES TO
THE PUBLIC:  As soon as practicable after the effective date of this
Registration Statement and all other conditions precedent to the merger of CBI
with and into the Registrant have been satisfied or waived as described in the
enclosed Proxy Statement/Prospectus.

    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. [ ]

    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 WHICH 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.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


                                      - 2 -

<PAGE>

                                  U. S. BANCORP
          CROSS-REFERENCE SHEET FOR REGISTRATION STATEMENT ON FORM S-4
                                       AND
                           PROXY STATEMENT/PROSPECTUS
<TABLE>
<CAPTION>

                                                     LOCATION IN PROXY
                                                     STATEMENT/PROSPECTUS
               S-4 ITEM
- -------------------------------------  --------------------------------------
  <S>                                              <C>
  1.  Forepart of Registration Statement and
      Outside Front Cover Page of Prospectus....   Facing Page of Registration
                                                   Statement; Cross-Reference
                                                   Sheet; Cover Page of Proxy
                                                   Statement/Prospectus
  2.  Inside Front and Outside Back Cover Pages
      of Prospectus.............................   Available Information;
                                                   Information Incorporated by
                                                   Reference; Table of
                                                   Contents
  3.  Risk Factors, Ratio of Earnings to Fixed
      Charges, and Other Information............   Summary; Market Prices of
                                                   Common Stock; Selected
                                                   Historical Financial Data;
                                                   Comparison of Certain
                                                   Unaudited Per Common Share
                                                   Data
  4.  Terms of the Transaction..................   Summary; The Merger;
                                                   Background of and Reasons
                                                   for the Merger; Comparison
                                                   of Shareholders' Rights
  5.  Pro Forma Financial Information...........   Unaudited Pro Forma
                                                   Combined Condensed
                                                   Financial Information
  6.  Material Contacts with the Company being
      Acquired..................................   Background of and Reasons
                                                   for the Merger
  7.  Additional Information Required for
      Reoffering by Persons and Parties Deemed
      to be Underwriters........................   Not Applicable
  8.  Interests of Named Experts and Counsel....   Experts; Legal Opinions
  9.  Disclosure of Commission Position on
      Indemnification for Securities Act
      Liabilities...............................   Not Applicable
 10.  Information with Respect to S-3
      Registrants...............................   Not Applicable
 11.  Incorporation of Certain Information by
      Reference.................................   Information Incorporated by
                                                   Reference
 12.  Information with Respect to S-2 or S-3
      Registrants...............................   Not Applicable
 13.  Incorporation of Certain Information by
      Reference.................................   Not Applicable
 14.  Information with Respect to Registrants
      Other Than S-2 or S-3 Registrants.........   Not Applicable
 15.  Information with Respect to S-3
      Companies.................................   Information Incorporated by
                                                   Reference
 16.  Information with Respect to S-2 or S-3
      Companies.................................   Not Applicable


                                      - 3 -

<PAGE>

 17.  Information with Respect to Companies
      Other Than S-2 or S-3 Companies...........   Not Applicable
 18.  Information if Proxies, Consents or
      Authorizations are to be Solicited........   Cover Page of Proxy
                                                   Statement/Prospectus;
                                                   Information Incorporated by
                                                   Reference; Summary;
                                                   Special Meeting of CBI
                                                   Stockholders; The
                                                   Merger; Board of Directors,
                                                   Management and Business
                                                   Operations of U. S. Bancorp
                                                   Following the Merger;
                                                   Interests of Certain
                                                   Persons in the Merger
 19.  Information if Proxies, Consents or
      Authorizations are not to be Solicited, or
      in an Exchange Offer......................   Not Applicable

</TABLE>


                                      - 4 -


<PAGE>
                          CALIFORNIA BANCSHARES, INC.
                           100 PARK PLACE, SUITE 140
                          SAN RAMON, CALIFORNIA 94583
                                 (510) 743-4200
 
                                 April 17, 1996
 
Dear Stockholder:
 
    You are cordially invited to attend a special meeting of the stockholders of
California  Bancshares,  Inc., a  Delaware corporation  ("CBI"),  to be  held on
Wednesday, May 22, 1996, at 11:00 a.m.,  local time, at the San Ramon  Marriott,
2600 Bishop Drive, San Ramon, California.
 
    At  the special meeting, CBI stockholders will be asked to consider and vote
upon a proposal to approve a Restated  Agreement and Plan of Merger dated as  of
February  11, 1996  (the "Merger Agreement"),  between U. S.  Bancorp, an Oregon
corporation, and CBI, pursuant to which CBI  will be merged with and into U.  S.
Bancorp.
 
    If  the merger  is approved and  consummated, each outstanding  share of CBI
common stock will be converted  into the right to receive  0.95 shares of U.  S.
Bancorp common stock.
 
    The  merger is expected to  allow CBI to join one  of the 30 largest banking
organizations in  the United  States,  positioning it  to meet  the  competitive
challenges  of the rapidly consolidating banking  industry in the United States.
The California deposit base of the combined company will be approximately  twice
that  of CBI and U.  S. Bancorp individually, making  CBI part of an institution
with a substantially enhanced presence in our region.
 
    THE BOARD OF DIRECTORS OF CBI RECOMMENDS THAT STOCKHOLDERS VOTE IN FAVOR  OF
APPROVAL OF THE MERGER AGREEMENT.
 
    A Notice of Special Meeting of Stockholders and a Proxy Statement/Prospectus
which  describes the merger and the  background to the transaction are enclosed.
You are urged to read all of these materials carefully.
 
    A proxy card is enclosed. Please indicate your voting instructions and sign,
date, and mail the proxy card promptly in the return envelope provided.  Whether
or  not you plan to  attend the special meeting in  person, it is important that
you return the enclosed  proxy card so  that your shares  are voted. FAILURE  TO
VOTE WILL HAVE THE SAME EFFECT AS A VOTE AGAINST THE MERGER AGREEMENT.
 
    Promptly  after the merger, a  letter of transmittal will  be mailed to each
holder of record of shares  of CBI common stock. PLEASE  DO NOT SEND YOUR  STOCK
CERTIFICATES  TO THE EXCHANGE AGENT  UNLESS AND UNTIL YOU  RECEIVE THE LETTER OF
TRANSMITTAL, WHICH WILL INCLUDE INSTRUCTIONS REGARDING THE PROCEDURE TO BE  USED
IN SENDING YOUR STOCK CERTIFICATES.
 
    Thank you, and I look forward to seeing you at the special meeting.
 
                                          Sincerely,
 
                                          DONALD J. GEHB
                                          CHAIRMAN OF THE BOARD
<PAGE>
                          CALIFORNIA BANCSHARES, INC.
                           100 PARK PLACE, SUITE 140
                          SAN RAMON, CALIFORNIA 94583
                                 (510) 743-4200
 
                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
                           TO BE HELD ON MAY 22, 1996
 
    Notice  is hereby given that a special meeting of stockholders of California
Bancshares, Inc., a Delaware corporation ("CBI"), will be held on Wednesday, May
22, 1996, at  11:00 a.m., local  time, at  the San Ramon  Marriott, 2600  Bishop
Drive,  San Ramon,  California, for  the purpose of  voting on  the approval and
adoption of a Restated  Agreement and Plan  of Merger dated  as of February  11,
1996  (the  "Merger  Agreement"),  by  and  between  U.  S.  Bancorp,  an Oregon
corporation, and CBI and approval  of the transactions contemplated thereby,  as
described  in the  accompanying Proxy  Statement/Prospectus, and  addressing all
other matters properly coming before the meeting. If the merger contemplated  by
the Merger Agreement is consummated, then CBI will be merged into U. S. Bancorp.
 
    Only  stockholders whose names appeared of record on the books of CBI at the
close of business on April 10, 1996, will  be entitled to notice of and to  vote
at the special meeting.
 
    A copy of the Merger Agreement is attached as Appendix 1 to the accompanying
Proxy Statement/ Prospectus.
 
    YOU  ARE CORDIALLY INVITED TO ATTEND  THE SPECIAL MEETING IN PERSON. WHETHER
OR NOT YOU PLAN TO  ATTEND THE MEETING, YOU ARE  URGED TO COMPLETE, DATE,  SIGN,
AND RETURN THE ENCLOSED PROXY CARD IN THE ENVELOPE PROVIDED AS SOON AS POSSIBLE.
THE BOARD OF DIRECTORS OF CBI RECOMMENDS THAT YOU MARK YOUR PROXY FOR THE MERGER
AGREEMENT.
 
                                          BY ORDER OF THE BOARD OF DIRECTORS
 
                                          DIANE M. MIETZEL
                                          SECRETARY
 
Dated: April 17, 1996
San Ramon, California
<PAGE>
                               PROXY STATEMENT OF
                          CALIFORNIA BANCSHARES, INC.
                        SPECIAL MEETING OF STOCKHOLDERS
                           TO BE HELD ON MAY 22, 1996
 
                            ------------------------
 
                                 PROSPECTUS OF
                                 U. S. BANCORP
                 SHARES OF COMMON STOCK, PAR VALUE $5 PER SHARE
 
    This  Proxy  Statement/Prospectus is  being furnished  to holders  of common
stock, par value $2.50 per share ("CBI Common Stock"), of California Bancshares,
Inc., a Delaware  corporation ("CBI"),  in connection with  the solicitation  of
proxies  by  the  CBI Board  of  Directors for  use  at the  Special  Meeting of
Stockholders of CBI to be  held at 11:00 a.m., local  time, on May 22, 1996,  at
the  San Ramon Marriott,  2600 Bishop Drive,  San Ramon, California,  and at any
adjournments or postponements thereof (the "Special Meeting").
 
    At the Special Meeting,  the holders of  CBI Common Stock  will be asked  to
vote  upon approval of the  Restated Agreement and Plan  of Merger between U. S.
Bancorp, an  Oregon corporation,  and CBI  dated as  of February  11, 1996  (the
"Merger  Agreement"), providing  for the merger  (the "Merger") of  CBI with and
into U. S. Bancorp, with U. S. Bancorp as the surviving corporation. The  Merger
Agreement  is  attached  hereto as  Appendix  1  and is  incorporated  herein by
reference.
 
    This Proxy  Statement/Prospectus  also constitutes  a  prospectus of  U.  S.
Bancorp  for up to 10,202,239 shares of the common stock, par value $5 per share
("U. S. Bancorp Common Stock"), of U. S. Bancorp to be issued to holders of  CBI
Common  Stock in  connection with the  Merger. Upon consummation  of the Merger,
except as described herein, each outstanding  share of CBI Common Stock will  be
converted  into the right to  receive 0.95 shares of  U. S. Bancorp Common Stock
(the "Exchange Ratio").
 
    CBI's obligation to  consummate the  Merger is  not conditioned  upon U.  S.
Bancorp  Common Stock continuing to trade  at any specified minimum price during
any period prior to  consummation of the Merger.  Because the Exchange Ratio  is
fixed  and because the market price of U.  S. Bancorp Common Stock is subject to
fluctuation, the value of the shares of U. S. Bancorp Common Stock that  holders
of CBI Common Stock will receive in the Merger may increase or decrease prior to
and following the Merger.
 
    U.  S. Bancorp Common Stock is traded  on the NASDAQ National Market System.
The last  reported sale  price  of U.  S. Bancorp  Common  Stock on  the  NASDAQ
National Market System on April 12, 1996, was $    per share.
 
    This  Proxy Statement/Prospectus and accompanying proxy card are first being
mailed to CBI stockholders on or about April 17, 1996.
 
 THE SECURITIES OF U. S. BANCORP 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 PROXY STATEMENT/PROSPECTUS. ANY REPRESENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
 
         The date of this Proxy Statement/Prospectus is April   , 1996.
<PAGE>
                             AVAILABLE INFORMATION
 
    Each  of CBI and U. S. Bancorp  is subject to the informational requirements
of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and  in
accordance therewith files reports, proxy statements, and other information with
the Securities and Exchange Commission (the "SEC"). U. S. Bancorp has filed with
the  SEC a  registration statement  on Form  S-4 (the  "Registration Statement")
under the Securities Act of 1933, as amended (the "Securities Act"), covering U.
S. Bancorp Common Stock  to be issued  by U. S. Bancorp  in connection with  the
Merger.  The Registration  Statement and  the exhibits  thereto, as  well as the
reports, proxy statements, and other information  filed with the SEC by CBI  and
U.  S. Bancorp under the Exchange Act, may be inspected and copied at prescribed
rates at the  public reference facilities  maintained by the  SEC at Room  1024,
Judiciary  Plaza, 450  Fifth Street,  N.W., Washington,  D.C. 20549,  and at the
regional offices of the SEC located at Seven World Trade Center, Suite 1300, New
York, New York 10048,  and The Citicorp Center,  500 West Madison Street,  Suite
1400,  Chicago, Illinois 60661. Copies of such  material may also be obtained at
prescribed rates  from the  Public Reference  Section of  the SEC  at 450  Fifth
Street,  N.W., Washington, D.C. 20549. As permitted by the rules and regulations
of  the  SEC,  this  Proxy  Statement/  Prospectus  omits  certain  information,
exhibits, and undertakings contained in the Registration Statement. Reference is
made  to  the Registration  Statement and  to the  exhibits thereto  for further
information.
 
    With respect to statements contained herein or in any document  incorporated
herein  by  reference as  to  the contents  of  any contract  or  other document
referred to herein or therein, reference is made to the copy of such contract or
other document filed as an exhibit  to the Registration Statement or such  other
document  incorporated herein by reference. Each  such statement is qualified in
its entirety by such reference.
 
    All information contained in this Proxy Statement/Prospectus relating to CBI
has been furnished by CBI and U. S. Bancorp is relying upon the accuracy of that
information.  All  information  contained  in  this  Proxy  Statement/Prospectus
relating to U. S. Bancorp has been furnished by U. S. Bancorp and CBI is relying
upon the accuracy of that information.
 
    This  Proxy Statement/Prospectus includes a  discussion of certain estimates
of future  performance  of U.  S.  Bancorp  and CBI  which  are  forward-looking
statements, including without limitation future earnings results, projected cost
savings,  the  discounted present  value analysis  performed by  CBI's financial
adviser, the assumptions underlying the  unaudited pro forma combined  condensed
financial  statements included herein,  and other financial  consequences of the
proposed Merger. Such estimates were based on numerous variables and assumptions
that are inherently uncertain, including  without limitation factors related  to
transaction  costs, the market price  of U. S. Bancorp  Common Stock, the future
interest  rate  environment,  general   economic  and  competitive   conditions,
difficulties  and costs associated  with the integration  of operations, and the
effects of accounting policies. Accordingly, actual future results or values may
be significantly more or less favorable than such estimates.
 
    NO  PERSON  IS  AUTHORIZED   TO  GIVE  ANY  INFORMATION   OR  TO  MAKE   ANY
REPRESENTATION NOT CONTAINED IN THIS PROXY STATEMENT/PROSPECTUS AND, IF GIVEN OR
MADE,  SUCH INFORMATION  OR REPRESENTATION SHOULD  NOT BE RELIED  UPON AS HAVING
BEEN AUTHORIZED BY CBI OR U.  S. BANCORP. THIS PROXY STATEMENT/ PROSPECTUS  DOES
NOT  CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER TO PURCHASE, THE
SECURITIES OFFERED BY THIS PROXY STATEMENT/PROSPECTUS, OR THE SOLICITATION OF  A
PROXY,  IN  ANY JURISDICTION  IN WHICH  IT IS  UNLAWFUL TO  MAKE SUCH  AN OFFER,
SOLICITATION OF AN OFFER,  OR PROXY SOLICITATION. NEITHER  THE DELIVERY OF  THIS
PROXY  STATEMENT/PROSPECTUS  NOR  ANY  DISTRIBUTION  OF  THE  SECURITIES OFFERED
PURSUANT TO  THIS PROXY  STATEMENT/PROSPECTUS  SHALL, UNDER  ANY  CIRCUMSTANCES,
CREATE  ANY IMPLICATION  THAT THERE  HAS BEEN NO  CHANGE IN  THE INFORMATION SET
FORTH HEREIN  OR  IN THE  AFFAIRS  OF CBI  OR  U. S.  BANCORP  OR ANY  OF  THEIR
RESPECTIVE  SUBSIDIARIES SINCE  THE DATE  OF THIS  PROXY STATEMENT/PROSPECTUS OR
THAT THE INFORMATION HEREIN  IS CORRECT AS  OF ANY TIME  SUBSEQUENT TO THE  DATE
HEREOF.
 
                                       2
<PAGE>
                     INFORMATION INCORPORATED BY REFERENCE
 
    THIS  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 PROXY  STATEMENT/PROSPECTUS  IS
DELIVERED UPON WRITTEN OR ORAL REQUEST TO THE FOLLOWING:
 
<TABLE>
<S>                                  <C>
U. S. BANCORP DOCUMENTS              CBI DOCUMENTS
U. S. Bancorp                        California Bancshares, Inc.
Attn: Investor Relations             Attn: Secretary
P.O. Box 8837                        100 Park Place, Suite 140
Portland, Oregon 97208               San Ramon, California 94583
(503) 275-5834                       (510) 743-4200
</TABLE>
 
    IN  ORDER TO  ENSURE TIMELY  DELIVERY OF SUCH  DOCUMENTS, A  REQUEST MUST BE
RECEIVED NO LATER THAN MAY 15, 1996.
 
    The following U. S. Bancorp documents are incorporated by reference herein:
 
        (1) U.  S. Bancorp's  Annual Report  on  Form 10-K  for the  year  ended
    December 31, 1995;
 
        (2)  U. S. Bancorp's Current Report on Form 8-K dated December 26, 1995,
    as amended by Amendment No. 1 filed February 6, 1996;
 
        (3) U. S. Bancorp's Current Report on Form 8-K dated January 31, 1996;
 
        (4) U. S. Bancorp's Current Report on Form 8-K dated March 11, 1996; and
 
        (5) The  description of  the U.  S. Bancorp  Common Stock  contained  in
    Exhibit  28 to U. S. Bancorp's Quarterly Report on Form 10-Q for the quarter
    ended June 30, 1992.
 
    Such  incorporation  by  reference  shall  not  be  deemed  to  specifically
incorporate  by  reference  the information  referred  to in  Item  402(a)(8) of
Regulation S-K.
 
    The following CBI documents are incorporated by reference herein:
 
        (1) CBI's Annual  Report on Form  10-K for the  year ended December  31,
    1995;
 
        (2) CBI's Current Report on Form 8-K dated February 11, 1996; and
 
        (3)  The description of the  CBI Common Stock set  forth at pages 50 and
    52-53 of CBI's Registration Statement on Form S-18 filed on August 13,  1980
    and in Exhibit 1(a) to Amendment No. 1 to the Registration Statement on Form
    S-18  filed on September  15, 1980; the  description of CBI  Series A Junior
    Participating Preferred Stock,  no par value,  and Preferred Stock  Purchase
    Rights  set forth in Exhibit  4 to CBI's Registration  Statement on Form 8-A
    dated July 5, 1995;  and any amendment  or report filed  for the purpose  of
    updating any such description.
 
    Such  incorporation  by  reference  shall  not  be  deemed  to  specifically
incorporate by  reference  the information  referred  to in  Item  402(a)(8)  of
Regulation S-K.
 
    All  documents  filed with  the SEC  by U.  S. Bancorp  and CBI  pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of
this Proxy Statement/Prospectus and prior to the date of the Special Meeting are
incorporated herein by reference and such documents shall be deemed to be a part
hereof from the  date of filing  of such documents.  Any statement contained  in
this  Proxy Statement/Prospectus or  in a document incorporated  or deemed to be
incorporated by reference herein  shall be deemed to  be modified or  superseded
for  purposes of this Proxy Statement/Prospectus  to the extent that a statement
contained herein or in any other subsequently filed document which also is or is
deemed to  be  incorporated by  reference  herein modifies  or  supersedes  such
statement.  Any statement so modified or  superseded shall not be deemed, except
as  so  modified   or  superseded,   to  constitute   a  part   of  this   Proxy
Statement/Prospectus.
 
                                       3
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
AVAILABLE INFORMATION......................................................................................          2
INFORMATION INCORPORATED BY REFERENCE......................................................................          3
SUMMARY....................................................................................................          6
MARKET PRICES OF COMMON STOCK..............................................................................         10
SELECTED HISTORICAL FINANCIAL DATA.........................................................................         11
SELECTED FINANCIAL RATIOS..................................................................................         12
COMPARISON OF CERTAIN UNAUDITED PER COMMON SHARE DATA......................................................         13
SPECIAL MEETING OF CBI STOCKHOLDERS........................................................................         14
  General..................................................................................................         14
  Date, Time, and Place....................................................................................         14
  Purpose of Meeting.......................................................................................         14
  Shares Outstanding and Entitled to Vote; Record Date.....................................................         14
  Vote Required............................................................................................         14
  Voting, Solicitation, and Revocation of Proxies..........................................................         14
U. S. BANCORP..............................................................................................         15
CALIFORNIA BANCSHARES, INC.................................................................................         16
BACKGROUND OF AND REASONS FOR THE MERGER...................................................................         16
  Background of the Merger.................................................................................         16
  Reasons for the Merger...................................................................................         17
  Opinion of CBI's Financial Adviser.......................................................................         20
THE MERGER.................................................................................................         24
  General..................................................................................................         24
  Structure of the Merger..................................................................................         24
  Conversion of CBI Common Stock; Treatment of CBI Stock Options...........................................         24
  Exchange of Certificates; Fractional Shares..............................................................         25
  Effective Time...........................................................................................         26
  Representations and Warranties...........................................................................         26
  Conduct of Business Pending the Merger and Other Agreements..............................................         26
  Conditions to the Consummation of the Merger.............................................................         29
  Regulatory Approvals Required for the Merger.............................................................         30
  Certain Federal Income Tax Consequences..................................................................         32
  Accounting Treatment.....................................................................................         33
  Termination of the Merger Agreement......................................................................         33
  Waiver and Amendment of the Merger Agreement.............................................................         33
  Stock Option Agreement...................................................................................         34
  The CBI Rights Agreement.................................................................................         37
  Employee Benefits and Plans..............................................................................         38
  NASDAQ National Market System Trading....................................................................         38
  Expenses.................................................................................................         38
  Dividends................................................................................................         38
  Resales of U. S. Bancorp Common Stock Received in the Merger.............................................         38
  U. S. Bancorp Dividend Reinvestment and Stock Purchase Plan..............................................         39
  Absence of Appraisal Rights..............................................................................         39
BOARD OF DIRECTORS, MANAGEMENT AND BUSINESS OPERATIONS OF U. S. BANCORP FOLLOWING THE MERGER...............         39
  Board of Directors and Management........................................................................         39
  Business Operations......................................................................................         40
</TABLE>
 
                                       4
<PAGE>
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
INTERESTS OF CERTAIN PERSONS IN THE MERGER.................................................................         40
<S>                                                                                                          <C>
  New Employment Agreement.................................................................................         40
  Existing CBI Employment Agreements.......................................................................         41
  Director Retirement Agreements...........................................................................         41
  CBI Stock Options........................................................................................         41
  Indemnification of CBI Officers and Directors............................................................         42
UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION...............................................         42
COMPARISON OF SHAREHOLDERS' RIGHTS.........................................................................         49
  Corporate Charter and Bylaw Amendments...................................................................         49
  Special Meetings of Shareholders.........................................................................         49
  Corporate Action Without a Meeting.......................................................................         49
  Dividends................................................................................................         50
  Capital Stock............................................................................................         50
  Dissenters' and Appraisal Rights.........................................................................         51
  Provisions Relating to Directors.........................................................................         52
  Certain Antitakeover Provisions..........................................................................         53
EXPERTS....................................................................................................         57
LEGAL OPINIONS.............................................................................................         57
STOCKHOLDER PROPOSALS......................................................................................         57
APPENDIX 1 -- RESTATED AGREEMENT AND PLAN OF MERGER........................................................
APPENDIX 2 -- OPINION OF GOLDMAN, SACHS & CO...............................................................
</TABLE>
 
                                       5
<PAGE>
                                    SUMMARY
 
    The following material summarizes certain information contained elsewhere in
this Proxy Statement/Prospectus. This summary is not intended to be complete and
is  qualified  in its  entirety by  reference to  the more  detailed information
appearing elsewhere in this  Proxy Statement/Prospectus, the Appendices  hereto,
and  the Registration  Statement. Each  stockholder is  urged to  read the Proxy
Statement/Prospectus and the Appendices in their entirety and with care.
 
THE SPECIAL MEETING AND VOTE REQUIRED
 
    THE SPECIAL MEETING.   A Special Meeting of  CBI stockholders, at which  the
proposal  to approve the Merger Agreement will  be considered and voted on, will
be held on Wednesday, May 22, 1996, at 11:00 a.m., local time, at the San  Ramon
Marriott,  2600 Bishop Drive,  San Ramon, California. Only  holders of record of
shares of CBI  Common Stock  at the  close of business  on April  10, 1996  (the
"Record  Date"), will be entitled to vote  at the Special Meeting. At such date,
there were outstanding  and entitled  to vote  10,108,847 shares  of CBI  Common
Stock.  Holders of shares of CBI Common Stock are entitled to one vote per share
on each matter that properly comes before the Special Meeting.
 
    VOTE REQUIRED.  Approval of the Merger Agreement by the stockholders of  CBI
requires  the affirmative vote of a majority of the votes entitled to be cast by
the holders  of record  of CBI  Common Stock.  Abstentions or  failures to  vote
(including  broker non-votes)  will have  the same  effect as  votes against the
proposal to approve the Merger Agreement.
 
    CBI's directors and executive  officers have indicated  that they will  vote
their  shares of CBI Common Stock in favor of the proposal to approve the Merger
Agreement. As of  the Record Date,  CBI's directors and  executive officers  and
their  affiliates had voting power with respect to 450,593 shares or 4.5% of the
outstanding shares of CBI Common Stock entitled to vote at the Special Meeting.
 
    Approval of the Merger by the shareholders of U. S. Bancorp is not required.
 
    For additional information  relating to  the Special  Meeting, see  "Special
Meeting of CBI Stockholders."
 
PARTIES TO THE MERGER
 
    CBI.   California Bancshares,  Inc., was incorporated under  the laws of the
state of  California in  1969, reincorporated  under the  laws of  the state  of
Delaware  in 1971 and approved  as a bank holding  company subject to regulation
under the Bank Holding Company  Act of 1956, as  amended (the "BHCA"), in  1971.
Its  principal executive offices are  located at 100 Park  Place, Suite 140, San
Ramon, California  94583 ((510)  743-4200). CBI  operates nine  commercial  bank
subsidiaries with $1.6 billion in total assets at December 31, 1995, and a total
of 38 branches serving the east San Francisco Bay Area and the central valley of
Northern California. See "California Bancshares, Inc."
 
    U.  S. BANCORP.  U. S. Bancorp is an Oregon corporation incorporated in 1968
as a bank holding  company subject to regulation  under the BHCA. Its  principal
executive  offices are located at 111  S.W. Fifth Avenue, Portland, Oregon 97204
((503) 275-6111). At December 31, 1995, U. S. Bancorp had consolidated assets of
$31.8 billion, placing  it among the  30 largest bank  holding companies in  the
United   States.  U.  S.  Bancorp   operates  banking  subsidiaries  in  Oregon,
Washington, Idaho, California, Nevada, and  Utah. The principal subsidiaries  of
U.  S.  Bancorp are  United  States National  Bank  of Oregon,  headquartered in
Portland, Oregon,  and  the  largest  commercial bank  in  Oregon  in  terms  of
deposits,  U.  S. Bank  of  Washington, National  Association,  headquartered in
Seattle, Washington and, in terms of deposits, the third largest commercial bank
in the state of  Washington, and West One  Bank, Idaho, headquartered in  Boise,
Idaho  and, in terms of deposits, the  largest commercial bank in Idaho. Another
U. S. Bancorp banking subsidiary, U. S. Bank of California, operates through  57
full-service  banking  offices  and  certain  other  banking  facilities  in its
30-county market  area  of  Northern  California.  U.  S.  Bank  of  California,
headquartered  in Sacramento, California, had $2.0 billion of assets at December
31, 1995. See "U. S. Bancorp."
 
                                       6
<PAGE>
REASONS FOR THE MERGER; RECOMMENDATION OF THE CBI BOARD OF DIRECTORS
 
    The Merger will allow CBI  stockholders to join one  of the 30 largest  bank
holding  companies in the United States and become part of a company that enjoys
a stronger  competitive position  in Northern  California and  a leading  market
position  throughout a wide  region including the Pacific  Northwest, as well as
being  well-positioned  to  meet  the  competitive  challenges  of  the  rapidly
consolidating  banking industry and changing  financial services industry in the
United States. The Merger is expected to permit CBI stockholders to benefit from
the increased dividend  potential of, and  more liquid trading  market for,  the
common   stock  of  the  resulting  company.   The  combination  of  the  scale,
considerable financial resources and broad product  array of U. S. Bancorp  with
CBI's  established  high-quality  distribution  network  and  commercial lending
experience in Northern California is expected to permit the combined company  to
offer  a broader  range of  products and  services through  an expanded Northern
California distribution network and to capitalize on developing opportunities in
the banking and financial services industries.
 
    THE BOARD OF DIRECTORS OF CBI  RECOMMENDS THAT THE CBI STOCKHOLDERS  APPROVE
THE MERGER AGREEMENT.
 
    See "Background of and Reasons for the Merger -- Reasons for the Merger."
 
OPINION OF CBI'S FINANCIAL ADVISER
 
    Goldman, Sachs & Co. ("Goldman Sachs") have delivered their written opinions
to  the CBI Board of Directors  that, as of February 11,  1996, the date the CBI
Board of  Directors  approved the  Agreement  and Plan  of  Merger dated  as  of
February 11, 1996 (as confirmed orally to the CBI Board of Directors on March 8,
1996), and as of the date of this Proxy Statement/Prospectus, the Exchange Ratio
(as defined in "Terms of the Merger" below) is fair to the holders of CBI Common
Stock.
 
    A  copy  of  the opinion  of  Goldman Sachs  dated  the date  of  this Proxy
Statement/Prospectus is attached  hereto as  Appendix 2. The  opinion should  be
read  in its entirety  for a discussion  of the assumptions  made, other matters
considered and limitations  on the  reviews undertaken in  connection with  such
opinion.  The opinions of Goldman Sachs are directed only to the fairness, as of
the date thereof, of the Exchange Ratio to CBI stockholders, do not address  any
other  aspect  of the  proposed Merger  or  any related  transaction and  do not
constitute a recommendation to any stockholder as to how such stockholder should
vote at the Special Meeting.
 
    See "Background of and Reasons for the Merger -- Opinion of CBI's  Financial
Adviser."
 
TERMS OF THE MERGER
 
    Pursuant  to  the Merger  Agreement,  at the  time  and date  the  Merger is
consummated (the  "Effective Time"),  CBI will  be merged  with and  into U.  S.
Bancorp,  with U. S.  Bancorp as the  surviving corporation. See  "The Merger --
General." At the  Effective Time,  outstanding shares  of U.  S. Bancorp  Common
Stock  and  of 8  1/8%  cumulative preferred  stock,  Series A  ("U.  S. Bancorp
Preferred Stock"), of U.  S. Bancorp will remain  outstanding and shares of  CBI
Common Stock will be converted into the right to receive shares of U. S. Bancorp
Common  Stock at the rate of 0.95 shares  of U. S. Bancorp Common Stock for each
share of CBI Common Stock (the "Exchange  Ratio"), with cash being paid in  lieu
of  issuing fractional shares of U. S.  Bancorp Common Stock. For information as
to how  CBI stockholders  will  be able  to exchange  certificates  representing
shares  of CBI Common Stock, see "The  Merger -- Conversion of CBI Common Stock;
Treatment of CBI Stock Options."
 
EFFECTIVE TIME
 
    The Merger is presently expected to be consummated during the second half of
1996, subject to  the receipt of  regulatory approvals and  the satisfaction  of
other  conditions. The Merger  will be consummated after  approval of the Merger
Agreement  by  the  CBI  stockholders,  receipt  of  regulatory  approvals,  and
satisfaction  or waiver of all of the  other conditions in the Merger Agreement.
See "The
 
                                       7
<PAGE>
Merger -- Effective Time of the  Merger." The Merger Agreement provides that  if
the  Merger has not been consummated by January 31, 1997, at any time after such
date, the Board of Directors of either U. S. Bancorp or CBI may vote to  abandon
the Merger.
 
BOARD OF DIRECTORS AND MANAGEMENT
 
    As  the surviving corporation in the Merger,  U. S. Bancorp will continue to
be managed  by its  Board  of Directors  and  executive officers  following  the
Effective Time. The Merger Agreement provides that the board of directors of the
surviving  corporation will consist of the members of the U. S. Bancorp Board of
Directors immediately prior to the  Merger. See "Board of Directors,  Management
and  Business  Operations of  U. S.  Bancorp  Following the  Merger --  Board of
Directors and Management."
 
STOCK OPTION AGREEMENT
 
    CBI and U. S. Bancorp entered  into a Stock Option Agreement dated  February
12,  1996 (the "Option Agreement"), pursuant to  which CBI granted U. S. Bancorp
an option (the  "Option") to purchase  from CBI  up to 2,002,076  shares of  CBI
Common  Stock (or  approximately 19.9  percent of  the outstanding  shares as of
February 12, 1996), at a price of  $25.75 per share. U. S. Bancorp may  exercise
the  Option only upon the occurrence of certain events which generally relate to
attempts by third  parties to  acquire a significant  interest in  CBI (none  of
which  has occurred) and  upon obtaining any  regulatory approvals necessary for
the acquisition of the CBI Common Stock subject to the Option. At the request of
U. S. Bancorp,  under limited circumstances  (none of which  has occurred),  CBI
will  repurchase for  a formula price  the Option  and any shares  of CBI Common
Stock purchased upon  exercise of  the Option and  beneficially owned  by U.  S.
Bancorp at that time. See "The Merger -- Stock Option Agreement."
 
ABSENCE OF APPRAISAL RIGHTS
 
    Because  the  CBI Common  Stock is  designated as  a National  Market System
security on the NASDAQ interdealer quotation system, holders of CBI Common Stock
do not  have any  appraisal rights  under Delaware  law in  connection with  the
Merger. See "The Merger -- Absence of Appraisal Rights."
 
NASDAQ NATIONAL MARKET SYSTEM TRADING
 
    The  U. S. Bancorp Common Stock to be issued in the Merger is expected to be
traded on the NASDAQ  National Market System under  the symbol "USBC." See  "The
Merger -- NASDAQ National Market System Trading."
 
CONDITIONS; REGULATORY APPROVALS
 
    Consummation  of  the  Merger is  conditioned  upon approval  of  the Merger
Agreement by the requisite vote of holders of shares of CBI Common Stock as  set
forth  herein; receipt  of all  required approvals  of the  Merger by regulatory
agencies, including  the  Board  of  Governors of  the  Federal  Reserve  System
("Federal  Reserve Board"); receipt by each party  of a favorable tax opinion of
its respective legal counsel; the continuing accuracy of the representations and
warranties of  each party;  the  performance of  specified obligations  by  each
party;  and other conditions. U. S. Bancorp filed an application for approval of
the Merger with the Federal Reserve Board on March 29, 1996. See "The Merger  --
Conditions  to  the Consummation  of the  Merger"  and "--  Regulatory Approvals
Required for the Merger."
 
TERMINATION AND AMENDMENT OF THE MERGER AGREEMENT
 
    The Merger Agreement may be terminated,  and the Merger abandoned, prior  to
the  Effective Time, whether before or after its approval by the stockholders of
CBI (i) by the respective majority votes of the Boards of Directors of both  CBI
and  U. S.  Bancorp or  (ii) by  the Board  of Directors  of either  party under
certain specified circumstances,  including if  the Merger shall  not have  been
consummated  by January 31, 1997. Subject to compliance with applicable law, the
Merger Agreement may  be amended by  U. S. Bancorp  and CBI by  action taken  or
authorized  by their respective Boards of  Directors at any time. After approval
by  the  stockholders   of  CBI   of  the   Merger  Agreement,   in  the   event
 
                                       8
<PAGE>
the  companies contemplate  a waiver  of, or  amendment to,  a provision  of the
Merger Agreement of the type  which by law may not  be made without approval  of
stockholders  of either or both companies, CBI or  U. S. Bancorp or both, as may
be required  by  law,  will  solicit  proxies  from  each  company's  respective
stockholders   to  obtain  such  approval.  In  the  event  that  the  companies
contemplate a waiver or amendment which  reduces the amount or changes the  form
of  the consideration to be received by  CBI stockholders in the Merger pursuant
to the Merger  Agreement, CBI will  resolicit proxies from  its stockholders  to
obtain  approval for such waiver or amendment. See "The Merger -- Termination of
the Merger Agreement" and "-- Waiver and Amendment of the Merger Agreement."
 
TAX AND ACCOUNTING TREATMENT OF THE MERGER
 
    CBI and U.  S. Bancorp have  received opinions from  their respective  legal
counsel  to the effect that the Merger will constitute a tax-free reorganization
within the meaning of Section 368(a)(1)(A) of the Internal Revenue Code of 1986,
as amended (the "Code"). Because the  Merger will be a tax-free  reorganization,
no  income, gain, or  loss will be recognized  by a stockholder  of CBI upon the
exchange of shares of U. S. Bancorp Common Stock for CBI Common Stock (except in
connection with cash received in lieu of fractional shares). Consummation of the
Merger is conditioned upon receipt by CBI and U. S. Bancorp of similar  opinions
from  their  respective  legal counsel  dated  as  of the  Effective  Time. Upon
consummation of the Merger,  U. S. Bancorp will  account for the acquisition  of
CBI  using the purchase method of accounting. See "The Merger -- Certain Federal
Income Tax Consequences" and "-- Accounting Treatment."
 
INTERESTS OF CERTAIN PERSONS IN THE MERGER
 
    EXECUTIVE EMPLOYMENT AGREEMENTS.   In connection with  the execution of  the
Merger Agreement, the parties have executed an Employment Agreement by and among
CBI,  U. S. Bancorp and Joseph P. Colmery, President and Chief Executive Officer
of CBI. In addition, certain CBI employees are parties to employment  agreements
which  entitle  each  of  them to  certain  payments  in the  event  his  or her
employment is  terminated for  specified reasons  or certain  other actions  are
taken  with respect  to such  employees following  a change  in control  of CBI,
including consummation of the Merger. See  "Interests of Certain Persons in  the
Merger -- New Employment Agreement" and "-- Existing CBI Employment Agreements."
 
    CBI  STOCK OPTIONS.  The execution of the Agreement and Plan of Merger dated
as of February 11, 1996, resulted  in certain holders of unexercised options  to
purchase  CBI Common  Stock being  accorded the  right to  exercise such options
immediately prior to consummation of the Merger, whether or not such options are
otherwise vested at  such time.  Pursuant to  the Merger  Agreement, each  stock
option  issued by CBI to  an employee or director  under certain CBI stock plans
that is outstanding and unexercised at  the Effective Time will be converted  as
of  the Effective Time into an option to  purchase U. S. Bancorp Common Stock in
accordance with the  Exchange Ratio. See  "Interests of Certain  Persons in  the
Merger -- CBI Stock Options."
 
    DIRECTOR  RETIREMENT  AGREEMENTS.    Pursuant  to  a  Directors'  Retirement
Agreement entered into by CBI with certain  directors, in the event of a  merger
in  which CBI will not be the  surviving corporation, including the Merger, each
director who is party to such agreement may elect to require CBI to purchase  an
annuity  contract providing for payment when due  of all future benefits owed to
such director.  See "Interests  of Certain  Persons in  the Merger  --  Director
Retirement Agreements."
 
    INDEMNIFICATION.   The  Merger Agreement  provides that  U. S.  Bancorp will
indemnify and hold harmless each present and former director and officer of CBI,
or any subsidiary of CBI, to the fullest extent permissible under applicable law
and the articles of incorporation or bylaws of U. S. Bancorp or any agreement to
which U.  S. Bancorp  is  a party  as in  effect  on February  11, 1996.  U.  S.
Bancorp's indemnification obligations will continue in full force and effect for
a period of six years from the Effective Time. See "Interests of Certain Persons
in the Merger -- Indemnification of CBI Officers and Directors."
 
                                       9
<PAGE>
                         MARKET PRICES OF COMMON STOCK
 
    U.  S. Bancorp Common Stock and CBI Common Stock are traded over the counter
on the NASDAQ  National Market System.  The following table  sets forth for  the
periods  indicated  the high  and low  sales  prices as  reported on  the NASDAQ
National Market System for U. S. Bancorp Common Stock and CBI Common Stock.
 
<TABLE>
<CAPTION>
                                                    U. S. BANCORP
                                                                          CBI COMMON
                                                     COMMON STOCK           STOCK
                                                    --------------      --------------
CALENDAR QUARTER                                    HIGH      LOW       HIGH      LOW
- --------------------------------------------------  ----      ----      ----      ----
<S>                                                 <C>       <C>       <C>       <C>
1993
  First Quarter...................................  $287/8    $ 241/2   $14       $  93/4
  Second Quarter..................................   281/8      22       133/4      113/4
  Third Quarter...................................   27         243/8    141/2      111/2
  Fourth Quarter..................................   271/8      223/4    153/4      14
1994
  First Quarter...................................   285/8      231/2    16         141/2
  Second Quarter..................................   285/8      241/2    18         15
  Third Quarter...................................   281/8      251/4    191/4      17
  Fourth Quarter..................................   257/8      221/8    181/2      151/2
1995
  First Quarter...................................   263/4      22       181/2      161/2
  Second Quarter..................................   273/4      231/2    21         163/8
  Third Quarter...................................   291/2      237/8    231/2      193/4
  Fourth Quarter..................................   36         283/8    271/4      203/4
1996
  First Quarter...................................   345/8      291/4    321/4      251/2
  Second Quarter (through April 12, 1996).........
</TABLE>
 
    On February 9, 1996, the last trading day before the public announcement  of
the  proposed Merger, the last sale price reported on the NASDAQ National Market
System for U. S. Bancorp Common Stock was $34.25 ($32.54 on an  equivalent-share
basis  for  each share  of  CBI Common  Stock). The  last  sale price  per share
reported on the NASDAQ National Market  System for CBI Common Stock on  February
9,  1996, was $27.75. On April 12, 1996,  the last sale price per share reported
on the NASDAQ National Market System for U. S. Bancorp Common Stock was $
($        on an equivalent-share basis for  each share of CBI Common Stock)  and
for  CBI Common Stock  was $         . Stockholders are  urged to obtain current
quotations for the market prices  of U. S. Bancorp  Common Stock and CBI  Common
Stock.
 
    No  assurance can be given as to the  market price of CBI Common Stock or U.
S. Bancorp Common Stock at the Effective Time of the Merger, or of U. S. Bancorp
Common Stock after the Effective Time of the Merger. Because the Exchange  Ratio
is  fixed and  because the  market price of  the U.  S. Bancorp  Common Stock is
subject to fluctuation, the value  of the shares of  U. S. Bancorp Common  Stock
that  holders of  CBI Common Stock  will receive  in the Merger  may increase or
decrease prior to and after the Effective Time.
 
                                       10
<PAGE>
                       SELECTED HISTORICAL FINANCIAL DATA
 
    The following table  sets forth selected  consolidated historical  financial
data  for U. S. Bancorp  and CBI for the periods  specified below. The data have
been derived  in  part  from,  and  should be  read  in  conjunction  with,  the
consolidated   financial  statements  and  notes  thereto  and  other  financial
information with respect to U. S. Bancorp and CBI incorporated by reference into
this Proxy Statement/ Prospectus (see "Information Incorporated by  Reference"),
and  such data  are qualified  in their  entirety by  reference thereto. Certain
amounts have been reclassified to conform CBI's financial information with U. S.
Bancorp's presentation.
 
<TABLE>
<CAPTION>
                                                                      YEARS ENDED DECEMBER 31,
                                              -------------------------------------------------------------------------
                                                  1991           1992           1993           1994           1995
                                              -------------  -------------  -------------  -------------  -------------
<S>                                           <C>            <C>            <C>            <C>            <C>
                                                          (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
U. S. BANCORP(1)
Earnings Summary:
  Interest income...........................  $   2,099,182  $   1,944,719  $   1,962,281  $   2,074,398  $   2,392,509
  Interest expense..........................      1,118,415        825,230        698,125        738,691        993,103
                                              -------------  -------------  -------------  -------------  -------------
  Net interest income.......................        980,767      1,119,489      1,264,156      1,335,707      1,399,406
  Provision for credit losses...............        155,053        148,762        106,234        120,146        124,093
  Noninterest revenue.......................        442,470        519,283        620,352        552,719        524,740
  Income before cumulative effect of
   accounting changes.......................        232,125        271,446        341,136        254,666        328,971
  Net income................................        232,125        211,556        341,136        254,666        328,971
Per Common Share:
  Income before accounting changes..........  $        1.68  $        1.87(3) $        2.23 $        1.60 $        2.09
  Net income................................           1.68           1.45(3)          2.23          1.60          2.09
  Cash dividends declared...................            .71            .76            .85            .94           1.06
Period End Balance Sheet Data:
  Total assets..............................  $  24,292,336  $  27,874,784  $  29,086,757  $  30,609,108  $  31,794,283
  Total earning assets......................     21,582,825     24,643,243     25,945,928     27,004,341     27,883,285
  Total deposits............................     17,360,760     21,061,615     21,447,682     21,859,189     23,264,629
  Long-term debt............................      1,318,787      1,437,225      1,161,217      1,244,190      1,377,021
  Total shareholders' equity................      1,773,428      2,121,133      2,441,761      2,493,054      2,617,053
  Common shareholders' equity...............      1,773,428      1,971,133      2,291,761      2,343,054      2,467,053
  Preferred stock...........................             --        150,000        150,000        150,000        150,000
CBI
Earnings Summary:
  Interest income (2).......................  $      89,879  $      74,494  $      69,944  $      79,562  $     116,823
  Interest expense..........................         40,607         26,739         20,411         21,246         42,966
                                              -------------  -------------  -------------  -------------  -------------
  Net interest income (2)...................         49,272         47,755         49,533         58,316         73,857
  Provision for credit losses...............          4,855          4,065          3,425          1,895          1,485
  Noninterest revenue.......................          7,971          8,143          8,807          7,506          9,479
  Income before cumulative effect of
   accounting changes.......................          6,328          6,415          8,789         11,636         18,035
  Net income................................          6,924          7,310          8,789         11,636         18,035
Per Common Share:
  Income before accounting changes..........  $         .69  $         .69  $         .94  $        1.24  $        1.80
  Net income................................            .76            .79            .94           1.24           1.80
  Cash dividends declared...................            .45            .52            .52            .55            .76
Period End Balance Sheet Data:
  Total assets..............................  $     967,016  $     962,434  $   1,046,495  $   1,333,296  $   1,570,458
  Total earning assets......................        878,798        882,928        974,391      1,225,686      1,445,383
  Total deposits............................        861,380        854,813        933,773      1,179,717      1,425,895
  Long-term debt............................             --             --             --             --             --
  Stockholders' equity......................         96,875        100,650        105,984        112,243        130,761
</TABLE>
 
- --------------------------
(1) In March  1994, U. S.  Bancorp's Board  of Directors approved  a major  cost
    reduction   program.  In  connection  therewith,   a  $100  million  pre-tax
    restructuring charge  was recorded  in  the 1994  first quarter  results  of
    operations.  In connection with the merger of West One Bancorp with and into
    U. S. Bancorp  in December  1995, pre-tax  merger and  integration costs  of
    $98.9 million were recognized in 1995.
 
(2)  CBI interest income and  net interest income have  been adjusted by $1,710,
    $1,469, $1,374,  $1,590 and  $1,598  in 1991,  1992,  1993, 1994  and  1995,
    respectively, to conform to U. S. Bancorp's financial presentation.
 
(3)  1992 income  before accounting  changes per common  share on  a primary and
    fully diluted basis was $1.84 and $1.79, respectively. Net income per  share
    on  a primary  and fully  diluted basis  was $1.42  and $1.40, respectively.
    Dilution was not material in the other periods presented.
 
                                       11
<PAGE>
                           SELECTED FINANCIAL RATIOS
 
    The  following  table  presents  unaudited  information  concerning  certain
financial  ratios  for U.  S. Bancorp  and  CBI on  a historical  basis. Certain
amounts have been reclassified to conform CBI's financial information with U. S.
Bancorp's presentation. The ratios are qualified in their entirety by  reference
to,  and  should  be  read  in  conjunction  with,  the  consolidated  financial
statements and notes thereto and other financial information with respect to  U.
S.    Bancorp   and   CBI   incorporated    by   reference   into   this   Proxy
Statement/Prospectus. See "Information Incorporated by Reference."
 
<TABLE>
<CAPTION>
                                                                                         YEAR ENDED DECEMBER 31,
                                                                          -----------------------------------------------------
                                                                            1991       1992       1993       1994       1995
                                                                          ---------  ---------  ---------  ---------  ---------
<S>                                                                       <C>        <C>        <C>        <C>        <C>
PERFORMANCE RATIOS:
Return on Average Total Assets
  U. S. Bancorp(1)......................................................        .98%      1.07%      1.22%       .87%      1.09%
  CBI...................................................................        .72        .76        .89       1.07       1.23
Return on Average Common Shareholders' Equity
  U. S. Bancorp(1)......................................................      13.74      14.06      15.71      10.62      12.90
  CBI...................................................................       7.23       7.38       8.52      10.63      14.57
Net Interest Margin (tax-equivalent)
  U. S. Bancorp.........................................................       4.89       5.17       5.31       5.35       5.38
  CBI...................................................................       5.66       5.52       5.62       5.93       5.50
Overhead Ratio(2)
  U. S. Bancorp.........................................................      63.11      65.03      65.71      72.34      65.38
  CBI...................................................................      74.40      75.19      70.29      67.81      61.96
ASSET QUALITY RATIOS:
Allowance for Credit Losses to Period-End Loans
  U. S. Bancorp.........................................................       1.63       1.81       1.77       1.79       1.91
  CBI...................................................................       1.46       1.61       1.90       1.40       1.44
Allowance for Credit Losses to Nonperforming Loans
  U. S. Bancorp.........................................................         83        117        144        192        336
  CBI...................................................................        119        112        101         98         99
Nonperforming Assets to Period-End Loans and Foreclosed Assets
  U. S. Bancorp.........................................................       2.52       1.77       1.44       1.06        .73
  CBI...................................................................       2.73       2.45       2.33       1.69       1.75
Net Loans Charged-Off to Average Loans
  U. S. Bancorp.........................................................        .73        .70        .48        .39        .33
  CBI...................................................................       1.03        .58        .47        .48        .18
CAPITAL RATIOS:
Average Common Shareholders' Equity to Average Assets
  U. S. Bancorp.........................................................       7.14       7.24       7.48       7.83       8.13
  CBI...................................................................       9.98      10.29      10.47      10.06       8.43
Leverage Ratio
  U. S. Bancorp.........................................................       6.77       7.10       7.64       7.82       7.89
  CBI...................................................................      10.21      10.46      10.60      10.27       7.98
Tier 1 Risk-based Capital Ratio
  U. S. Bancorp.........................................................       7.79       8.63       8.95       8.72       8.44
  CBI...................................................................      13.11      14.34      14.67      12.65      12.03
Total Risk-based Capital Ratio
  U. S. Bancorp.........................................................      10.24      11.51      11.75      11.38      11.79
  CBI...................................................................      14.21      15.55      15.92      13.90      13.28
</TABLE>
 
- --------------------------
(1) Returns for  1992 were computed  before accounting changes.  Net income  for
    1992  includes  a  $59.9  million  after-tax  charge  from  the  adoption of
    Statement of  Financial  Accounting  Standards (FAS)  No.  106,  "Employees'
    Accounting for Postretirement Benefits Other than Pensions" and FAS No. 112,
    "Employers'   Accounting  for  Postemployment  Benefits."  After  accounting
    changes, return  on average  total assets  was .84%  and return  on  average
    common shareholders' equity was 11.25%.
 
(2)  Overhead  ratio  is defined  as  noninterest  expenses as  a  percentage of
    tax-equivalent net interest income and noninterest revenues.
 
                                       12
<PAGE>
             COMPARISON OF CERTAIN UNAUDITED PER COMMON SHARE DATA
 
    The following table sets forth selected historical per common share data for
U. S. Bancorp and CBI, pro forma  combined data per U. S. Bancorp common  share,
and  equivalent  pro forma  data per  CBI  common share.  The pro  forma amounts
included in the table  assume consummation of  the Merger and  are based on  the
purchase method of accounting, a preliminary determination and allocation of the
total  purchase price, and the assumptions  described under "Unaudited Pro Forma
Combined  Condensed  Financial  Information."  The   data  should  be  read   in
conjunction  with the  consolidated financial  statements and  notes thereto and
other financial information with respect to  U. S. Bancorp and CBI  incorporated
by  reference into or  set forth elsewhere in  this Proxy Statement/ Prospectus,
and such  data  are  qualified  in their  entirety  by  reference  thereto.  See
"Information  Incorporated  by  Reference"  and  "Unaudited  Pro  Forma Combined
Condensed Financial Information." The pro forma  amounts in the table below  are
presented  for informational purposes and are  not necessarily indicative of the
financial position or  the results of  operations of the  combined company  that
actually  would have occurred had the Merger  been consummated as of the date or
for the  period  presented. The  pro  forma  amounts are  also  not  necessarily
indicative  of the future financial position  or future results of operations of
the combined company. No adjustment has  been included in the pro forma  amounts
for  the positive  effects of  potential cost  savings and  revenue enhancements
which may be achieved subsequent to the Merger.
 
<TABLE>
<CAPTION>
                                                                                          YEAR ENDED
                                                                                       DECEMBER 31, 1995
                                                                                       -----------------
<S>                                                                                    <C>
U. S. BANCORP COMMON STOCK
Income per share before cumulative effect of accounting changes(1):
  Historical.........................................................................      $    2.09
  Pro forma combined(2)..............................................................           2.04
Cash dividends declared per share:
  Historical.........................................................................           1.06
  Pro forma combined.................................................................           1.06
Book value per share at period-end:
  Historical.........................................................................          16.38
  Pro forma combined(3)..............................................................          16.38
CBI COMMON STOCK
Income per share before cumulative effect of accounting changes:
  Historical.........................................................................      $    1.80
  Pro forma equivalent(4)............................................................           1.94
Cash dividends declared per share:
  Historical.........................................................................            .76
  Pro forma equivalent(4)............................................................           1.01
Book value per share at period-end:
  Historical.........................................................................          13.00
  Pro forma equivalent(4)............................................................          15.56
</TABLE>
 
- ------------------------
(1) In  connection with  the merger  of West  One Bancorp  with and  into U.  S.
    Bancorp  in December  1995, pre-tax  merger and  integration costs  of $98.9
    million were recognized in 1995.
 
(2) The impact of  common stock equivalents, such  as common stock options,  and
    other potentially dilutive securities is not material; accordingly, they are
    not included in the per share calculations.
 
(3) Amount is calculated by dividing total pro forma common shareholders' equity
    by  the sum  of total outstanding  shares of  U. S. Bancorp  Common Stock at
    December 31, 1995,  plus new  shares of  U. S.  Bancorp Common  Stock to  be
    issued  in the Merger (approximately 9.6  million shares based on the number
    of shares  of CBI  Common Stock  outstanding at  December 31,  1995). It  is
    anticipated  that a  number of shares  approximately equal to  the number of
    shares to be issued in the Merger will be purchased on the open market under
    U. S. Bancorp's share  repurchase program, subject  to market conditions  or
    other factors. U. S. Bancorp expects to obtain the funds for the purchase of
    such  shares from asset maturities and sales, the issuance of debt and other
    sources of liquidity available to U. S. Bancorp.
 
(4) Amounts are calculated by multiplying  U. S. Bancorp's pro forma amounts  by
    the Exchange Ratio.
 
                                       13
<PAGE>
                      SPECIAL MEETING OF CBI STOCKHOLDERS
 
GENERAL
 
    This  Proxy Statement/Prospectus is being furnished to holders of CBI Common
Stock in connection with the solicitation  of proxies by the Board of  Directors
of  CBI for  use at  the Special Meeting  and any  adjournments or postponements
thereof at which the stockholders of CBI will consider and vote upon a  proposal
to  approve the Merger  Agreement. Each copy  of this Proxy Statement/Prospectus
which is being  mailed or delivered  to CBI stockholders  is accompanied by  the
Notice of Special Meeting of Stockholders of CBI and a proxy card.
 
    This  Proxy Statement/Prospectus is also furnished  by U. S. Bancorp to each
holder of CBI Common Stock as a prospectus in connection with the issuance by U.
S. Bancorp of shares of U. S. Bancorp Common Stock upon the consummation of  the
Merger.
 
DATE, TIME, AND PLACE
 
    The  Special Meeting will be held on  Wednesday, May 22, 1996, commencing at
11:00 a.m., local time, at the San Ramon Marriott, 2600 Bishop Drive, San Ramon,
California.
 
PURPOSE OF MEETING
 
    The purpose of the Special Meeting is  to consider and vote upon the  Merger
Agreement  and to conduct any  other business that may  properly come before the
Special Meeting. In the event of a vote to adjourn the Special Meeting to permit
further solicitation of proxies, no proxy which is voted against approval of the
Merger Agreement will be voted in favor of any such adjournment.
 
SHARES OUTSTANDING AND ENTITLED TO VOTE; RECORD DATE
 
    The Board of Directors of CBI has  fixed the close of business on April  10,
1996,  as the  Record Date  for the  determination of  holders of  shares of CBI
Common Stock entitled to notice  of and to vote at  the Special Meeting. At  the
close of business on the Record Date, there were 10,108,847 shares of CBI Common
Stock  issued and  outstanding held  by approximately  4,506 holders  of record.
Holders of record of  CBI Common Stock  on the Record Date  are entitled to  one
vote per share.
 
VOTE REQUIRED
 
    The  affirmative  vote of  a  majority of  all  shares of  CBI  Common Stock
outstanding on the Record Date is required to approve the Merger Agreement.
 
    As of the  Record Date,  CBI's directors  and executive  officers and  their
affiliates owned and were entitled to vote 450,593 shares of CBI Common Stock at
the  Special Meeting, representing approximately  4.5 percent of the outstanding
shares. Each  such director  and  executive officer  has  indicated his  or  her
intention  to vote  the CBI Common  Stock beneficially  owned by him  or her for
approval of the Merger Agreement.
 
VOTING, SOLICITATION AND REVOCATION OF PROXIES
 
    Proxy cards accompany this Proxy Statement/Prospectus for use at the Special
Meeting by record holders of CBI Common Stock. A CBI stockholder may use his  or
her  proxy if he  or she is  unable to attend  the Special Meeting  in person or
wishes to have his or her  shares voted by proxy even  if he or she attends  the
meeting. The proxy may be revoked in writing by the person giving it at any time
before  it is exercised by notice of such revocation to the Secretary of CBI, by
submitting a proxy  having a  later date,  or by  such person  appearing at  the
Special  Meeting and electing  to vote in person.  All proxies validly submitted
and  not  revoked  will  be  voted  in  the  manner  specified  therein.  IF  NO
SPECIFICATION  IS MADE,  THE PROXIES  WILL BE VOTED  FOR APPROVAL  OF THE MERGER
AGREEMENT.
 
    The presence of a majority of the outstanding shares of CBI Common Stock  in
person  or by proxy is necessary to  constitute a quorum of stockholders for the
Special Meeting. Shares for which  duly-executed proxies have been received  but
with  respect to which holders of shares  have abstained from voting are counted
in determining the shares present at a meeting.
 
                                       14
<PAGE>
    For voting purposes,  only shares  affirmatively voted for  approval of  the
Merger  Agreement will be counted as  favorable votes in determining whether the
Merger Agreement is  approved by the  holders of a  majority of the  outstanding
shares  of CBI Common Stock. Under  applicable stock exchange rules, brokers who
hold shares in street name for customers  are prohibited from giving a proxy  to
vote  such customers' shares with respect to approval of the Merger Agreement in
the absence of  specific instructions from  such customers ("broker  nonvotes").
Accordingly,  abstentions and broker nonvotes will have the same effect as votes
against approval of the Merger Agreement.
 
    CBI will  bear the  cost of  soliciting proxies  from its  stockholders.  In
addition  to using  the mails, proxies  may be solicited  by personal interview,
telephone, and wire. Banks, brokerage  houses, other institutions, nominees  and
fiduciaries  will be  requested to  forward their  proxy soliciting  material to
their principals and obtain authorization for the execution of proxies. CBI will
reimburse such parties for their reasonable expenses in sending proxy  materials
to the beneficial owners of the shares.
 
    At  the Special Meeting, representatives of KPMG Peat Marwick LLP, principal
accountants of CBI for the current year and most recently completed fiscal year,
are expected to be  present, will have  the opportunity to  make a statement  if
they desire to do so, and are expected to be available to respond to appropriate
questions.
 
                                 U. S. BANCORP
 
    U.  S. Bancorp is  a regional multibank holding  company incorporated in the
state of Oregon in 1968 and  headquartered in Portland, Oregon. At December  31,
1995,  U. S.  Bancorp was  among the  30 largest  bank holding  companies in the
United States in  terms of  total assets, with  total assets  of $31.8  billion,
deposits of $23.3 billion, and shareholders' equity of $2.6 billion.
 
    U. S. Bancorp is engaged in a general retail and commercial banking business
in the states of Oregon, Washington, California, Nevada, Idaho, and Utah through
its  banking subsidiaries. On December 26, 1995, the merger of West One Bancorp,
a regional multibank holding company  headquartered in Boise, Idaho, with  total
assets  of $9.2 billion at  September 30, 1995, with and  into U. S. Bancorp was
consummated, with U. S. Bancorp as the surviving corporation.
 
    U. S. Bancorp's  principal banking subsidiaries  are United States  National
Bank  of Oregon, with $12.1 billion in total  assets at December 31, 1995, U. S.
Bank of Washington, National Association, which had total assets of $7.0 billion
at that date, and West One Bank,  Idaho, which had total assets of $4.7  billion
at  year-end  1995. Another  U. S.  Bancorp  banking subsidiary,  U. S.  Bank of
California, operates  in Northern  California  through 57  full-service  banking
offices and certain other banking facilities in its 30-county market area. U. S.
Bank of California, headquartered in Sacramento, California, had $2.0 billion of
assets at December 31, 1995.
 
    Other  subsidiaries of U.  S. Bancorp provide  financial services related to
banking, including lease  financing, consumer and  commercial finance,  discount
brokerage,  investment advisory services,  and insurance agency  and credit life
insurance services.  U. S.  Bancorp's principal  activities are  located in  the
Pacific  Northwest, but  it has  operations throughout  the Far  West and,  to a
lesser extent, the rest of the United States. The principal executive offices of
U. S. Bancorp  are located  at 111 S.W.  Fifth Avenue,  Portland, Oregon  97204,
telephone number (503) 275-6111.
 
                          CALIFORNIA BANCSHARES, INC.
 
    CBI  is a multibank holding company incorporated under the laws of the state
of California in 1969 and reincorporated under the laws of the state of Delaware
in 1971 and headquartered  in San Ramon, California.  At December 31, 1995,  CBI
had  total assets of  $1.6 billion, deposits of  $1.4 billion, and stockholders'
equity of $130.8 million.
 
                                       15
<PAGE>
    CBI is engaged in  a general retail and  commercial banking business in  the
east  San  Francisco Bay  Area  and the  central  valley of  Northern California
through its nine banking subsidiaries with a total of 38 branches. The principal
executive offices of CBI are  located at 100 Park  Place, Suite 140, San  Ramon,
California 94583, telephone number (510) 743-4200.
 
                    BACKGROUND OF AND REASONS FOR THE MERGER
 
BACKGROUND OF THE MERGER
 
    CBI has experienced significant growth and change in the past decade. It was
incorporated  under the laws of the  state of California in 1969, reincorporated
under the laws  of the state  of Delaware in  1971, and was  approved as a  bank
holding  company under the  BHCA by the  Federal Reserve Board  in 1971. CBI was
known as Alameda Bancorporation until 1990 and as Northern California  Community
Bancorporation  from that point until its  merger with Mission-Valley Bancorp in
1991, after which its name was changed to California Bancshares, Inc. During the
last two years,  CBI grew  further through various  acquisitions, including  the
Bank  of Livermore, Modesto  Banking Company, Old Stone  Bank of California, and
First Community Bankshares, Inc., the holding company for Centennial Bank. As  a
result  of the growth described above, CBI presently has assets of approximately
$1.6  billion  and  operates  38   branches  through  nine  commercial   banking
subsidiaries in communities throughout Alameda, Contra Costa, Stanislaus and San
Joaquin counties, and including one branch in northern Santa Clara county.
 
    As  part of CBI's  exploration of strategies  to maximize shareholder value,
including through  acquisitions in  which  revenue enhancement  and  operational
efficiencies  could be realized,  CBI's senior management has  from time to time
held informal discussions with senior  management of other banking  institutions
regarding  the possibility  of a  combination of  CBI with  such institutions or
other banking institutions.  In early  1995, senior  management of  CBI and  the
Board  of Directors  of CBI (the  "CBI Board") held  discussions regarding CBI's
business and the  possible strategic  alternatives available to  it to  increase
shareholder  value, including without limitation  earnings growth, dividends and
share liquidity,  in light  of the  current banking  environment and  the  trend
toward strategic consolidation in the banking industry.
 
    Following  these preliminary  discussions and  as part  of such exploration,
representatives of Goldman Sachs, CBI's financial adviser, and senior management
of CBI held an informal meeting with  the senior management of U. S. Bancorp  in
April  1995.  In  addition,  Goldman  Sachs  engaged  in  additional exploratory
discussions regarding the possibility of  a strategic combination involving  CBI
with  U. S. Bancorp. Throughout this  time, discussions remained preliminary and
no specific transactions were discussed.  Further, as part of its  consideration
of  strategic alternatives,  and based  on its  own experience  and its  view of
trends in the banking industry, the CBI Board had at this time determined  that,
as  a general matter, were it to pursue such a business combination transaction,
it would likely prefer to affiliate CBI with a substantially larger institution,
with the advantages of doing so envisioned as including, but not limited to, the
ability to  increase  the potential  dividend  to stockholders  and  the  market
liquidity  of  their stock;  access to  a broader  array of  products, services,
experience and expertise that would match  the needs of many of CBI's  customers
and  potential  customers;  the  financial capability  to  invest  in innovative
technology and customer  delivery systems; competitive  and marketing  strength;
favorable  expense  ratios; and  improved  geographic diversification  to reduce
dependence on the local economy.
 
    During late 1995, senior  management of CBI  and representatives of  Goldman
Sachs discussed with the CBI Board CBI's strategic plans to increase shareholder
value,  the trend  toward consolidation in  the banking  industry generally, and
certain recent events in the  California banking and financial services  market,
including the First Interstate Bancorp transaction. The CBI Board also discussed
the reasons for such consolidation and in particular the importance of achieving
institutional  scale  in  order  to  realize  appropriate  levels  of  long-term
profitability and service and  product delivery to customers.  In light of  such
trends    and   events   and    of   CBI's   goal    of   positioning   CBI   to
 
                                       16
<PAGE>
maximize long-term shareholder value, Goldman  Sachs then described for the  CBI
Board  certain strategic alternatives available to CBI, including both continued
independence (and  continuing  CBI's  strategy of  re-engineering  coupled  with
strategic  acquisitions),  and  a  possible  combination  with  another  banking
institution  capable  of  achieving  the  advantages  previously  discussed   as
desirable  by the  CBI Board.  After deliberations on  the matter  the CBI Board
engaged Goldman Sachs in November 1995 for the purpose of initiating exploratory
contacts regarding potential interest in a business combination transaction with
CBI.
 
    Pursuant to the CBI Board's authorization, Goldman Sachs represented CBI  in
discussions  with U.  S. Bancorp  in the  following weeks  regarding a potential
business combination  with CBI.  CBI entered  into a  customary  confidentiality
agreement with U. S. Bancorp in December 1995.
 
    Following  preliminary discussions concerning the  possibility of a business
combination between  CBI  and U.  S.  Bancorp, U.  S.  Bancorp conducted  a  due
diligence  investigation of CBI during the first  week of February 1996. Also at
this time, CBI and Goldman Sachs  conducted a due diligence investigation of  U.
S.  Bancorp.  Starting on  February 5,  1996,  U. S.  Bancorp and  CBI discussed
potential legal and other terms of a transaction between the parties,  including
the  structure of such a transaction. On February 7, 1996, CBI received a letter
from U.  S. Bancorp  formally proposing  a merger  of CBI  with and  into U.  S.
Bancorp,  substantially  on the  terms and  conditions set  forth in  a proposed
merger agreement and stock option agreement.
 
    On February  8, 1996,  the CBI  Board  met and  reviewed with  CBI's  senior
management and its legal and financial advisers the status of the discussions to
date,  which as of that time were focused  on U. S. Bancorp. The Board discussed
the terms of the merger agreement and the stock option agreement proposed by  U.
S.  Bancorp. Based on  the foregoing and  the matters discussed  below under the
heading "--  Reasons  for the  Merger,"  the  CBI Board  authorized  CBI  senior
management  and representatives  to continue to  pursue negotiations  with U. S.
Bancorp.
 
    The CBI  Board held  a special  meeting  on February  11, 1996,  to  further
consider   U.  S.  Bancorp's  merger  proposal  and  the  outcome  of  continued
negotiations. Based on the foregoing and  the matters discussed below under  the
headings  "--  Reasons  for  the  Merger" and  "--  Opinion  of  CBI's Financial
Adviser," the CBI  Board determined to  approve the proposed  Merger with U.  S.
Bancorp.  Following the meeting,  the Agreement and  Plan of Merger  dated as of
February 11, 1996, and the Option Agreement were executed by each of CBI and  U.
S.  Bancorp. On March 8, 1996, the CBI  Board approved the terms of the Restated
Agreement and Plan  of Merger dated  as of February  11, 1996, to  permit U.  S.
Bancorp to account for the Merger using the purchase rather than the pooling-of-
interests method of accounting.
 
REASONS FOR THE MERGER
 
    CBI.   On February 11, 1996, ten of the eleven CBI directors, constituting a
quorum of the CBI  Board, convened to  consider in detail  the Merger and  other
transactions  contemplated  by the  proposed merger  agreement and  stock option
agreement. At the meeting, members of CBI management and CBI's outside financial
and legal advisers reviewed the terms of the proposed merger agreement and stock
option agreement and the transactions  contemplated thereby with the CBI  Board.
Also  at the  meeting, Goldman  Sachs delivered their  opinion that,  as of that
date, the  Exchange Ratio  in the  proposed  merger agreement  was fair  to  the
holders  of CBI Common Stock. See "-- Opinion of CBI's Financial Adviser." After
deliberating with respect to the Merger and the other transactions  contemplated
by  the proposed merger agreement and stock option agreement, considering, among
other things,  the matters  set forth  below and  the opinion  of Goldman  Sachs
referred  to above, the CBI  Board, by unanimous vote  of the directors present,
approved the Agreement and  Plan of Merger  dated as of  February 11, 1996,  the
Option  Agreement and the  transactions contemplated thereby.  On March 8, 1996,
the CBI Board, after  deliberation and consultation  with its outside  financial
and  legal  advisers,  including oral  confirmation  by Goldman  Sachs  of their
opinion, dated as of February 11, 1996, as to the fairness of the Exchange Ratio
to holders of CBI Common Stock, approved the terms of
 
                                       17
<PAGE>
the Restated Agreement  and Plan of  Merger dated  as of February  11, 1996  (as
amended  and  restated, the  "Merger  Agreement"), to  permit  U. S.  Bancorp to
account for the Merger using  the purchase rather than the  pooling-of-interests
method of accounting.
 
    THE  CBI BOARD BELIEVES THAT THE MERGER IS FAIR TO AND IN THE BEST INTERESTS
OF CBI AND ITS STOCKHOLDERS. THE CBI BOARD RECOMMENDS THAT STOCKHOLDERS VOTE FOR
THE APPROVAL OF THE MERGER AGREEMENT.
 
    In connection  with its  approval of  the Merger  Agreement and  the  Option
Agreement, the CBI Board considered and approved the adoption of an amendment to
the  Rights  Agreement,  dated  as  of June  30,  1995,  between  CBI  and First
Interstate Bank of California, as Rights Agent (the "CBI Rights Agreement"),  to
permit  the execution of the  Merger Agreement and the  Option Agreement and the
consummation of the Merger without  triggering the exercisability under the  CBI
Rights  Agreement of the rights issued thereunder. Additionally, for purposes of
the Delaware General Corporation Law  ("DGCL"), and the Restated Certificate  of
Incorporation  of CBI (the "Certificate"), the  CBI Board approved the execution
and  delivery  of  the  Merger  Agreement  and  the  Option  Agreement  and  the
consummation  of the Merger, and exempted such transactions from the application
of provisions of the DGCL and Article 11 of the Certificate.
 
    In reaching its determination to approve and adopt the Merger Agreement  and
the  transactions contemplated  thereby, the  CBI Board  considered a  number of
factors, including, without limitation, the following:
 
        (i)  information   regarding  the   financial  condition,   results   of
    operations, cash flow, business and purposes of CBI and of U. S. Bancorp;
 
        (ii) the CBI Board's review of the operating environment, including, but
    not  limited to, the  continued consolidation and  increasing competition in
    the banking  and financial  services industries,  the prospect  for  further
    changes  in  these industries  and  the importance  of  financial resources,
    technological innovation and strategic  geographic diversification to  being
    able  to capitalize on developing opportunities in these industries. In this
    regard, the  CBI  Board  considered  that  the  combined  company  would  be
    significantly  more diversified in lines of business and geographically than
    CBI on a stand-alone basis and that the combined company's vulnerability  to
    certain  adverse developments, including exposure to the California economy,
    would be less than would CBI's on a stand-alone basis;
 
       (iii) the CBI Board's assessment that the combined entity resulting  from
    the Merger would better serve the convenience and needs of its customers and
    the  communities it serves as a result  of being a substantially larger bank
    (as compared  to CBI  remaining independent),  thereby affording  access  to
    financial  and managerial resources, the ability  to offer an expanded range
    of potential  products  and services,  and  the advantage  of  technological
    innovation  in  product  and  service delivery  and  in  other  areas, which
    assessment was based on a number of factors, including information presented
    to the  CBI Board  and  the CBI  Board's  beliefs concerning  the  financial
    strength,  management  depth,  capital  resources  and  product  and service
    offerings of the combined institution,  the compatibility of the  businesses
    of U. S. Bancorp and CBI given the two companies' corporate cultures and the
    strategic  objectives and priorities of  each company, the historical prices
    and trading information with respect to the U. S. Bancorp Common Stock,  the
    general  conditions of, and the likelihood  of further consolidation in, the
    banking industry, and the  likelihood that the Merger  would be approved  by
    the appropriate regulatory authorities;
 
       (iv)  the  CBI  Board's  review  of  strategic  alternatives  to  enhance
    shareholder   value,   including   remaining   independent   and   potential
    transactions  with  other  institutions, which  alternatives  the  CBI Board
    believed were not  likely to result  in greater shareholder  value than  the
    Merger  based on, among other things, the  CBI Board's assessment of CBI, U.
    S. Bancorp, and  the information presented  to it at  its February 11,  1996
    meeting, as described herein;
 
                                       18
<PAGE>
        (v)  the financial presentation of Goldman Sachs, including the analysis
    with respect to  premium-to-market price of  the Exchange Ratio  to the  CBI
    stockholders  and  the discounted  present value  analysis (which  relied on
    numerous assumptions, including  asset and earnings  growth rates,  dividend
    payout rates, terminal values and discount rates) which attempted to compare
    the value of the Merger consideration to be received by CBI stockholders for
    each  share of  CBI Common Stock  to the long-term  value of a  share of CBI
    Common Stock on  a stand-alone  basis (see  "-- Opinion  of CBI's  Financial
    Adviser");
 
       (vi) the February 11, 1996 opinion of Goldman Sachs as to the fairness of
    the  Exchange Ratio to the stockholders of CBI  as of such date and the oral
    confirmation of such opinion by Goldman Sachs  as of March 8, 1996 (see  "--
    Opinion of CBI's Financial Adviser");
 
       (vii)  the CBI Board's belief that the  terms of the Merger Agreement are
    attractive  in  that  the  agreement  allows  CBI  stockholders  to   become
    shareholders  in  an institution  which  is among  the  top 30  bank holding
    companies in  the United  States  (ranked by  total  assets) with  a  strong
    position  in key Northern California and  Pacific Northwest markets and with
    the financial  strength  to  compete  effectively  in  the  current  banking
    environment,  and to benefit from the possibility of increased dividends and
    the  characteristics  of  U.  S.  Bancorp's  common  stock,  including   its
    liquidity;
 
      (viii)  the anticipated cost savings  and operating efficiencies available
    to the  combined institution  from the  Merger, including  consolidation  of
    administrative  and back office operations and integration of common systems
    (see "Board  of  Directors, Management  and  Business Operations  of  U.  S.
    Bancorp Following the Merger -- Business Operations");
 
       (ix)  the  expectation  that  the Merger  will  generally  be  a tax-free
    transaction to CBI and its stockholders (see "The Merger -- Certain  Federal
    Income Tax Consequences");
 
        (x)  the CBI Board's belief, after  consultation with its legal counsel,
    that the required regulatory approvals  could be obtained to consummate  the
    Merger (see "The Merger -- Regulatory Approvals Required for the Merger");
 
       (xi)  the effect of  the Merger on  CBI's other constituencies, including
    its employees and the communities served  by CBI, including the CBI  Board's
    assessment  that the  Merger is  not expected to  result in  closures of CBI
    branches, and  including the  CBI Board's  awareness and  assessment of  the
    potential that the Merger could be expected to provide certain CBI employees
    with employment and other benefits (see "Interests of Certain Persons in the
    Merger"); and
 
       (xii)  U.  S. Bancorp's  prior experience  in implementing  and arranging
    large-scale bank mergers and acquisitions.
 
    The foregoing discussion of  the information and  factors considered by  the
CBI  Board  is not  intended to  be exhaustive  but is  believed to  include all
material factors considered by the CBI  Board. In reaching its determination  to
approve  and recommend the Merger, the CBI  Board did not assign any relative or
specific weights to  the foregoing  factors, and individual  directors may  have
given differing weights to different factors.
 
    U. S. BANCORP.  U. S. Bancorp entered the Northern California market in 1989
through  its  acquisition  of  the seven-branch  Bank  of  Loleta;  its Northern
California operations have  grown steadily  since that  time through  additional
acquisitions as well as internal growth. U. S. Bank of California, headquartered
in Sacramento, California, had 57 full-service banking offices and certain other
banking  facilities in its 30-county  market area and $2.0  billion in assets at
December 31, 1995. U. S.  Bancorp views the acquisition  of CBI as an  excellent
opportunity  to  further  its  commitment  to  the  growth  and  success  of its
California franchise and  to expand into  densely-populated, attractive  markets
contiguous to its present operations in Northern California.
 
    The  assimilation  of CBI's  expertise  in commercial  bank  management will
bolster U. S. Bank  of California's development  of commercial banking  products
and services. Access to CBI's desirable
 
                                       19
<PAGE>
consumer  and business customer  base, including a high  proportion of small and
middle market  businesses, will  afford  opportunities for  revenue  enhancement
through  an expanded audience  for U. S.  Bancorp's wider array  of products and
services. The  acquisition  of  CBI's  respected,  well-managed  and  profitable
community  banks is also expected to be  an excellent cultural fit within the U.
S. Bancorp franchise. For these reasons, U. S. Bancorp believes the Merger  will
provide  significant benefits  to the shareholders  and customers of  both U. S.
Bancorp and CBI.
 
OPINION OF CBI'S FINANCIAL ADVISER
 
    Goldman Sachs have rendered their written  opinions to the CBI Board,  dated
February  11, 1996  (which was  confirmed orally  to the  CBI Board  on March 8,
1996), and dated the date of this Proxy Statement/Prospectus, to the effect that
at the date of each  such opinion the Exchange Ratio  in the Merger was fair  to
the holders of CBI Common Stock.
 
    The  full text of the opinion of Goldman  Sachs dated the date of this Proxy
Statement/Prospectus, which sets  forth, among other  things, assumptions  made,
procedures  followed, matters considered and limits  on the review undertaken by
Goldman Sachs, is  attached as  Appendix 2 to  this Proxy  Statement/Prospectus.
Holders  of CBI  Common Stock are  urged to  read this opinion  in its entirety.
GOLDMAN SACHS' OPINIONS, WHICH  ARE ADDRESSED TO CBI'S  BOARD OF DIRECTORS,  ARE
DIRECTED  ONLY  TO  THE EXCHANGE  RATIO  IN  THE MERGER  AND  DO  NOT CONSTITUTE
RECOMMENDATIONS TO ANY CBI STOCKHOLDER AS TO HOW SUCH STOCKHOLDER SHOULD VOTE AT
THE SPECIAL MEETING AND DO NOT ADDRESS  ANY OTHER ASPECT OF THE PROPOSED  MERGER
OR   ANY   RELATED   TRANSACTION.  The   summary   set  forth   in   this  Proxy
Statement/Prospectus of  the  opinions of  Goldman  Sachs is  qualified  in  its
entirety  by  reference to  the  full text  of  the opinion  attached  hereto as
Appendix 2.
 
    In connection  with their  opinion dated  February 11,  1996, Goldman  Sachs
reviewed,  among other things: (a) the Agreement  and Plan of Merger dated as of
February 11, 1996; (b) annual reports to shareholders and Annual Reports on Form
10-K of CBI and of U. S. Bancorp for the five years ended December 31, 1994; (c)
certain interim reports to  shareholders and Quarterly Reports  on Form 10-Q  of
CBI  and of U. S. Bancorp; (d) certain other communications from CBI and from U.
S. Bancorp to their respective shareholders; and (e) certain internal  financial
analyses and forecasts for CBI prepared by CBI's management and certain internal
financial  analyses for  U. S. Bancorp  prepared by U.  S. Bancorp's management.
Goldman Sachs also held  discussions with members of  the senior managements  of
CBI  and U.  S. Bancorp  regarding their  past and  current business operations,
regulatory  relations,  financial  condition  and  future  prospects  of   their
respective companies. In addition, Goldman Sachs reviewed the reported price and
trading  activity of CBI Common  Stock and U. S.  Bancorp Common Stock, compared
certain financial and stock  market information for CBI  and U. S. Bancorp  with
similar  information for  certain other  companies the  securities of  which are
publicly traded,  reviewed  the  financial  terms  of  certain  recent  business
combinations  in  the  banking  industry specifically  and  in  other industries
generally and  performed  such  other  studies and  analyses  as  Goldman  Sachs
considered  appropriate.  No  limitations were  imposed  by the  CBI  Board with
respect to the investigations made or  the procedures followed by Goldman  Sachs
in rendering their opinions.
 
    Goldman  Sachs relied without independent verification upon the accuracy and
completeness of all of the financial  and other information reviewed by  Goldman
Sachs  for purposes  of their  opinions. Goldman  Sachs are  not experts  in the
evaluation of  loan  and lease  portfolios  for  the purpose  of  assessing  the
adequacy  of the  allowances for losses  with respect thereto  and have assumed,
with the consent of the CBI Board, that  such allowances for each of CBI and  U.
S.  Bancorp are in the aggregate adequate to cover all such losses. In addition,
Goldman Sachs have not reviewed the individual credit files and have not made an
independent evaluation or appraisal of the  assets and liabilities of CBI or  U.
S.  Bancorp  or  any of  their  subsidiaries  and Goldman  Sachs  have  not been
furnished with any such evaluation or appraisal. In connection with the  opinion
dated  February 11,  1996, Goldman  Sachs assumed, with  the consent  of the CBI
Board, that the Merger  would be accounted for  as a pooling-of-interests  under
generally accepted accounting principles. Goldman Sachs were retained by the CBI
Board  to express  an opinion as  to the fairness  to the holders  of CBI Common
Stock of the Exchange
 
                                       20
<PAGE>
Ratio. Goldman  Sachs did  not  address CBI's  underlying business  decision  to
proceed  with the Merger and did not make any recommendation to the CBI Board or
to the stockholders of CBI with respect to any approval of the Merger Agreement.
 
    Each of Goldman Sachs' opinions is necessarily based upon conditions as they
existed and could  be evaluated  on the date  thereof and  the information  made
available  to  Goldman Sachs  through the  date thereof.  Goldman Sachs  did not
express any opinion as to  the price or range of  prices at which U. S.  Bancorp
Common Stock might trade subsequent to the Merger.
 
    In  connection with rendering their opinions to the CBI Board, Goldman Sachs
performed a variety of  financial analyses which  are summarized below.  Goldman
Sachs  believe  that their  analyses  must be  considered  as a  whole  and that
selecting portions of their analyses and the factors considered by them, without
consideration of all factors and analyses, could create a misleading view of the
analyses and the  processes underlying  Goldman Sachs'  opinions. Goldman  Sachs
arrived  at their ultimate opinion based on the results of all the analyses they
undertook assessed as a whole,  and they did not  draw conclusions from or  with
regard to any one method of analysis. The preparation of a fairness opinion is a
complex   process  involving   subjective  judgments  and   is  not  necessarily
susceptible to  partial analyses  or summary  description. With  respect to  the
comparable  company  analysis and  bank  merger transaction  analysis summarized
below, no public company utilized as a comparison is identical to U. S.  Bancorp
or  CBI  and  such  analyses  necessarily  involve  complex  considerations  and
judgments concerning the differences in financial and operating  characteristics
of  the companies and other factors that  could affect the acquisition or public
trading values  of  the  companies  concerned. The  earnings  estimates  of  the
management  of CBI  contained in or  underlying Goldman Sachs'  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 or
assets do not  purport to  be appraisals or  necessarily reflect  the prices  at
which  companies or their securities actually may  be sold. None of the analyses
performed by Goldman Sachs was assigned a greater significance by Goldman  Sachs
than any other.
 
    In conducting their analyses, Goldman Sachs discussed with the management of
CBI  earnings estimates for each of U. S. Bancorp and CBI. Neither U. S. Bancorp
nor CBI publicly discloses internal management estimates of the type provided to
Goldman Sachs  in connection  with its  review  of the  financial terms  of  the
Merger.  The estimates were based on numerous variables and assumptions that are
inherently uncertain, including  without limitation factors  related to  general
economic  and com-petitive  conditions. Accordingly,  actual results  could vary
significantly from those reflected in such estimates.
 
    The following is a brief summary of the analyses performed by Goldman  Sachs
in connection with their opinion dated February 11, 1996:
 
        1.   PROPOSED COMBINATION  SUMMARY.  Goldman  Sachs analyzed the closing
    prices for the U. S. Bancorp Common  Stock and CBI Common Stock on  February
    9,  1996 (the last trading  day prior to the  announcement of the Merger) of
    $34.25 and $27.75, as well as the Exchange Ratio of 0.95, resulting in value
    per share  of  CBI  Common  Stock  of  $32.54,  noting  that  the  aggregate
    combination   value  was  $340  million  (based  on  10.061  million  shares
    outstanding as of December  31, 1995 and 710,297  options outstanding as  of
    September  30, 1995 with an average exercise price of $14.52). Goldman Sachs
    noted that the Exchange  Ratio represented a premium  of 17% to the  closing
    price  of CBI  Common Stock  on February 9,  1996. Goldman  Sachs also noted
    that, as a multiple of CBI's fully diluted earnings per share, the  Exchange
    Ratio, based on the price of U. S. Bancorp Common Stock on February 9, 1996,
    represented  18.1x earnings  per share  for 1995  and 14.5x  CBI's estimated
    earnings per share for 1996. Goldman  Sachs further noted that the  Exchange
    Ratio  represented a multiple of 2.50x  CBI's stated book value, 2.57x CBI's
    tangible book value and 3.13x CBI's  adjusted book value (adjusted for a  6%
    tangible  equity/tangible  assets ratio),  such values  in  each case  as of
    December 31, 1995. In addition, Goldman Sachs noted that the Exchange Ratio,
    based on  the price  of U.  S. Bancorp  Common Stock  on February  9,  1996,
 
                                       21
<PAGE>
    represented  a premium to CBI's deposits of 14%. Goldman Sachs observed that
    the current holders  of CBI  Common Stock would  own 6.2%,  and the  current
    holders  of U.  S. Bancorp  Common Stock  would own  93.8%, of  the combined
    entity after giving effect to the Merger.
 
        2.  COMPARABLE COMPANY ANALYSIS.  Using publicly available  information,
    Goldman  Sachs compared the financial performance, dividend policy and stock
    market valuation of CBI with  the following five selected banking  companies
    of  comparable size  (the "Mid-Cap Group")  and two  other banking companies
    (the "Large Cap  Group") deemed  relevant by Goldman  Sachs: CVB  Financial,
    City  National, Imperial  Bancorp, Silicon  Valley Bancshares  and ValliCorp
    Holdings; and BankAmerica  and Wells  Fargo. Indications  of such  financial
    performance,  dividend policy and stock  market valuation included, but were
    not limited to: stock price and recent stock price performance expressed  in
    terms  of February 9, 1996 stock price as  a percent of the high stock price
    during the  previous 52  weeks; return  on average  assets for  the  quarter
    ending  December 31, 1995 (a median of 1.47% for the Mid-Cap Group, a median
    of 1.36% for the Large Cap Group, and 1.31% for CBI); the ratio of  tangible
    equity to tangible assets (a median of 7.81% for the Mid-Cap Group, a median
    of  5.48%  for  the  Large Cap  Group,  and  8.14% for  CBI);  the  ratio of
    nonperforming assets to the  sum of net  loans and the  value of other  real
    estate owned (a median of 3.20% for the Mid-Cap Group, a median of 1.68% for
    the  Large Cap Group, and 1.75% for  CBI); dividend yields (a median of 2.1%
    for the Mid-Cap Group, a  median of 2.5% for the  Large Cap Group, and  3.2%
    for  CBI); forecast price to earnings ratios (for 1996, a median of 10.5 for
    the Mid-Cap Group, a median  of 12.2 for the Large  Cap Group, and 12.3  for
    CBI  (on a stand-alone basis) and for 1997,  a median of 9.8 for the Mid-Cap
    Group, a median  of 10.9 for  the Large Cap  Group, and 11.3  for CBI (on  a
    stand-alone  basis)); and price to tangible book ratios (a median of 1.7 for
    the Mid-Cap Group,  a median of  3.1 for the  Large Cap Group,  and 2.2  for
    CBI).  These indications are based on public financial statement information
    as of  December 31,  1995  (except for  information pertaining  to  Imperial
    Bancorp, Silicon Valley Bancshares and Vallicorp Holdings, which is based on
    such  information as of September  30, 1995), Institutional Brokers Estimate
    System estimates as of February 7,  1996 and closing stock market prices  on
    February 9, 1996.
 
        3.   ANALYSIS OF COMPARABLE COMMERCIAL BANK COMBINATIONS.  Goldman Sachs
    analyzed  21  selected   other  commercial  bank   merger  and   acquisition
    transactions  involving consideration  to shareholders  of between  $100 and
    $500 million for commercial banking institutions in the United States during
    1994 and 1995. The transactions analyzed were: Norwest  Corporation/Victoria
    Bankshares; Mercantile Bancorp/Hawkeye Bancorp; NationsBank/Intercontinental
    Bank;  Union  Planters/Capitol  Bancorp;  Meridian  Bancorp/United  Counties
    Bancorp;  First  Commerce/Central   Corp.,  Comerica/Metrobank;   Mercantile
    Bancorp/TCBankshares; CCB Financial/Security Capital; Synovus Financial/NBSC
    Corp.;   Key  Corp/OmniBancorp;   Norwest  Corporation/Independent  Bancorp;
    Firstar Corporation/First Colonial;  First Virginia Banks/Farmers  National;
    National  Westminster/Central Jersey Bancorp;  BB&T Financial/Commerce Bank;
    Key Corp./Casco  & Bank  Vermont;  Harris Bankcorp/Suburban  Bancorp;  First
    Fidelity/Baltimore  Bancorp;  Keystone Financial/Frankford  Corp.  and First
    Interstate Bancorp/San Diego  Financial. This analysis,  which was based  on
    publicly  available financial  information for  the 12  months preceding the
    announcement of the  relevant transaction,  showed that  the Exchange  Ratio
    represented a multiple of: (i) 18.1x CBI's 1995 earnings per share, compared
    to  a high  multiple of trailing  12 months  earnings per share  of 18.1x, a
    median multiple of 15.7x and a  low multiple of 14.3x for 1995  transactions
    and  a high multiple of 67.0x, a median multiple of 22.1x and a low multiple
    of 10.3x for 1994 transactions; (ii) 2.50x CBI's stated book value, compared
    to a high multiple of 2.71x, a  median multiple of 1.90x and a low  multiple
    of  1.50x  for 1995  transactions and  a  high multiple  of 2.55x,  a median
    multiple of 2.10x  and a low  multiple of 1.13x  for 1994 transactions;  and
    (iii) 2.57x CBI's tangible book value, compared to a high multiple of 2.75x,
    a median multiple of 2.10x and a low multiple of 1.67x for 1995 transactions
    and  a high multiple of 2.64x, a median multiple of 2.40x and a low multiple
    of 1.28x for 1994 transactions. This analysis also showed that the  Exchange
    Ratio  represented a premium to the closing price of the CBI Common Stock on
    the last trading day prior to announcement of the Merger of 17%, compared to
    a high premium to market
 
                                       22
<PAGE>
    price of 42%, a median premium to market  price of 23% and a low premium  to
    market  price of 6% for 1995 transactions and a high premium to market price
    of 160%, a median premium to market price of 45% and a low premium to market
    price of 8% for 1994 transactions.  Goldman Sachs noted that no  transaction
    reviewed  was identical to the Merger and that, accordingly, any analysis of
    comparable transactions  necessarily  involves  complex  considerations  and
    judgments  concerning differences in financial and operating characteristics
    of the parties to the transactions being compared.
 
        4.   DIVIDEND ANALYSIS.    Goldman Sachs  summarized certain  pro  forma
    financial  and market data  for the combined  institution, based on publicly
    available financial information available as of December 31, 1995 and market
    information available on February 9, 1996. Based on U. S. Bancorp's  current
    dividend rate, the dividend payable by the combined institution attributable
    to  a share of CBI  Common Stock would be 21%  higher than the dividend paid
    with respect to such share prior to the Merger, assuming a dividend rate  by
    the  combined institution  that equals  the current  dividend rate  of U. S.
    Bancorp. Neither  CBI  nor  U.  S.  Bancorp  has  indicated  any  intentions
    regarding  payments of future dividends.  Goldman Sachs assumed for purposes
    of their analysis that U. S. Bancorp would continue its historical  practice
    of paying dividends equal to or greater than past dividends.
 
        5.    DISCOUNTED  PRESENT  VALUE  ANALYSIS.    Goldman  Sachs  performed
    discounted present value analyses to  determine the present value per  share
    of  CBI Common  Stock on  a stand-alone  basis based  on certain assumptions
    concerning the growth  rate of CBI  earnings per share  over the  succeeding
    five  years (reflecting CBI's core  earnings power absent acquisitions), the
    applicable discount rate and the price to earnings ratio at the end of  such
    period.  The  purpose of  these analyses  was  to compare  the value  of the
    consideration to  be received  by  CBI stockholders  in  the Merger  to  the
    estimated  value of a share of CBI  Common Stock on a stand-alone basis. For
    purposes of  the  analysis,  Goldman  Sachs assumed  growth  rates  for  CBI
    earnings per share of 9.0%, 10.0% and 11.0%. Goldman Sachs utilized discount
    rates  ranging from 14.0% to 16.0% and terminal value multiples ranging from
    10.0x to 15.0x  to apply  to forecasted  earnings for  2001. These  analyses
    showed  a range of stand-alone present values  per share of CBI Common Stock
    from $21.20  to $32.69  assuming a  growth rate  of 9.0%  per year  for  CBI
    earnings per share and from $23.12 to $35.76 assuming a growth rate of 11.0%
    per  year for CBI  earnings per share,  as compared to  consideration in the
    Merger (giving effect to the Exchange Ratio of 0.95 shares of U. S.  Bancorp
    Common  Stock for each share of CBI Common Stock) and a closing price for U.
    S. Bancorp Common  Stock on February  9, 1996,  of $34.25) of  $32.54 as  of
    February  9, 1996. These analyses did not purport to be indicative of actual
    values or  expected values  of the  shares of  CBI Common  Stock before  the
    Merger.  Goldman Sachs noted that the discounted present value analysis is a
    widely used  valuation methodology,  but noted  that it  relies on  numerous
    assumptions,  including  asset and  earnings  growth rates,  dividend payout
    rates, terminal values and discount rates.
 
        In  connection  with  their  opinion  dated  the  date  of  this   Proxy
    Statement/Prospectus,  Goldman Sachs confirmed  the appropriateness of their
    reliance on the analyses used to  render their February 11, 1996 opinion  by
    performing  procedures to update  certain of such  analyses and by reviewing
    the assumptions  upon  which  such  analyses  were  based  and  the  factors
    considered  in connection therewith. In  connection with their opinion dated
    the date of  this Proxy  Statement/ Prospectus, Goldman  Sachs reviewed  the
    Restated  Agreement and Plan of Merger. In connection with the March 8, 1996
    oral confirmation of their opinion dated February 11, 1996 and their opinion
    dated the date of this  Proxy Statement/Prospectus, Goldman Sachs also  have
    assumed,  with  the consent  of  the CBI  Board,  that the  Merger  would be
    accounted for as a purchase under generally accepted accounting principles.
 
                                       23
<PAGE>
    The  CBI Board retained  Goldman Sachs based  upon the recognized experience
and expertise of the senior  personnel in Goldman Sachs' financial  institutions
group.  Goldman Sachs are  an internationally recognized  investment banking and
advisory firm. Goldman Sachs, as part  of their investment banking and  advisory
business,  are continually engaged in the valuation of businesses and securities
in  connection  with   mergers  and   acquisitions,  negotiated   underwritings,
competitive biddings, secondary distributions of listed and unlisted securities,
private  placements and valuations for estate,  corporate and other purposes. At
various times, Goldman Sachs have conducted business with U. S. Bancorp.
 
    CBI and Goldman Sachs have entered into letter agreements pursuant to  which
CBI  has agreed to pay Goldman Sachs a transaction fee of $3,397,268, payable in
cash upon consummation of the Merger,  and to reimburse Goldman Sachs for  their
reasonable  out-of-pocket  expenses,  including the  fees  and  disbursements of
counsel, plus any  sales, use or  similar taxes arising  in connection with  its
engagement,  and to indemnify Goldman Sachs against certain liabilities relating
to or arising  out of the  engagement, including liabilities  under the  federal
securities laws.
 
                                   THE MERGER
 
GENERAL
 
    The  Boards of Directors  of U. S.  Bancorp and CBI  have adopted the Merger
Agreement, which  provides for  the Merger  at the  Effective Time,  with U.  S.
Bancorp  as the surviving corporation. With certain limited exceptions described
below, each share of CBI Common Stock outstanding at the Effective Time will  be
converted  into the right to receive 0.95  shares of U. S. Bancorp Common Stock.
Shares of  U.  S.  Bancorp  Common  Stock and  U.  S.  Bancorp  Preferred  Stock
outstanding  immediately  prior to  the Effective  Time will  remain outstanding
after the Merger.
 
    This section of the Proxy Statement/Prospectus describes certain aspects  of
the  proposed Merger, including the principal  terms of the Merger Agreement and
the Option Agreement. The Merger Agreement, a copy of which is attached to  this
Proxy  Statement/Prospectus  as Appendix  1,  is hereby  incorporated  herein by
reference. All stockholders of CBI are urged to read the Merger Agreement in its
entirety.
 
STRUCTURE OF THE MERGER
 
    Subject to  the  terms  and  conditions  of  the  Merger  Agreement  and  in
accordance  with the DGCL  and the Oregon Business  Corporation Act ("OBCA"), at
the Effective Time, CBI will  merge with and into U.  S. Bancorp. U. S.  Bancorp
will be the surviving corporation in the Merger, and will continue its corporate
existence  under  the  OBCA.  At  the  Effective  Time,  the  separate corporate
existence of CBI will terminate. The articles of incorporation and bylaws of  U.
S.  Bancorp, as in effect  immediately prior to the  Effective Time, will be the
articles of incorporation and bylaws of the surviving corporation.
 
CONVERSION OF CBI COMMON STOCK; TREATMENT OF CBI STOCK OPTIONS
 
    At the  Effective  Time  of the  Merger,  each  share of  CBI  Common  Stock
outstanding,  other than shares held in CBI's  treasury or held by U. S. Bancorp
or CBI  or any  subsidiary  of either  (except in  both  cases for  shares  held
directly  or indirectly in trust accounts  or managed accounts or otherwise held
in a fiduciary  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 0.95 shares (the "Exchange  Ratio")
of  U. S. Bancorp Common Stock. CBI's obligation to consummate the Merger is not
conditioned upon U. S. Bancorp Common Stock continuing to trade at any specified
minimum price  during  any period  prior  to  the Effective  Time.  Because  the
Exchange  Ratio is fixed  and because the  market price of  U. S. Bancorp Common
Stock is subject to fluctuation, the value of the shares of U. S. Bancorp Common
Stock that holders of CBI Common Stock  will receive in the Merger may  increase
or decrease prior to and following the Merger.
 
                                       24
<PAGE>
    Each  outstanding share of  CBI Common Stock  owned by U.  S. Bancorp or its
subsidiaries or by CBI or its  subsidiaries (other than Trust Account Shares  or
DPC Shares) will be canceled at the Effective Time and shall cease to exist, and
no  U.  S. Bancorp  Common Stock  or  other consideration  will be  delivered in
exchange therefor. All shares of  U. S. Bancorp Common  Stock that are owned  by
CBI  or  any subsidiary  will  become authorized  but  unissued stock  of  U. S.
Bancorp.
 
    Each stock option to acquire CBI Common Stock granted under CBI's 1990 Stock
Incentive Plan or  its Directors  Stock Option  Plan (together,  the "CBI  Stock
Plans")  that is outstanding and unexercised  immediately prior to the Effective
Time will be  converted at the  Effective Time  into, and will  become, a  stock
option  to purchase U.  S. Bancorp Common  Stock. See "--  Employee Benefits and
Plans."
 
    Shares of  U. S.  Bancorp Common  Stock and  U. S.  Bancorp Preferred  Stock
issued  and  outstanding immediately  prior to  the  Effective Time  will remain
issued and outstanding immediately after the Merger.
 
EXCHANGE OF CERTIFICATES; FRACTIONAL SHARES
 
    At or prior to the Effective Time,  U. S. Bancorp will deposit, or cause  to
be  deposited,  with First  Chicago  Trust Company  of  New York  (the "Exchange
Agent"), for the  benefit of the  holders of certificates  of CBI Common  Stock,
certificates  representing the shares of U. S. Bancorp Common Stock and the cash
in lieu of any fractional shares (such certificates for shares of U. S.  Bancorp
Common  Stock and the cash  in lieu of any  fractional shares, together with any
dividends or  distributions  with respect  thereto,  being referred  to  as  the
"Exchange  Fund") to be issued pursuant to  the Merger Agreement in exchange for
outstanding shares of CBI Common Stock.
 
    As soon as is practicable  after the Effective Time,  and in no event  later
than five business days after receipt by U. S. Bancorp of a list of stockholders
of  record of CBI as of the Effective Time, a form of transmittal letter will be
mailed by the Exchange  Agent to the  holders of CBI Common  Stock. The form  of
transmittal  letter will contain  instructions with respect  to the surrender of
certificates representing CBI Common Stock.
 
    CBI STOCK CERTIFICATES SHOULD  NOT BE RETURNED WITH  THE ENCLOSED PROXY  AND
SHOULD  NOT BE  FORWARDED TO  THE EXCHANGE  AGENT UNLESS  AND UNTIL  A LETTER OF
TRANSMITTAL IS RECEIVED FOLLOWING THE EFFECTIVE TIME.
 
    Until the certificates  representing CBI  Common Stock  are surrendered  for
exchange  after the Effective  Time of the Merger,  holders of such certificates
will accrue but will not be paid dividends or other distributions declared after
the Effective Time with  respect to the  U. S. Bancorp  Common Stock into  which
their  shares have been  converted. When such  certificates are surrendered, any
unpaid dividends or other  distributions will be  paid, without interest.  After
the  Effective Time, there will  be no transfers on  the stock transfer books of
CBI of shares of  CBI Common Stock issued  and outstanding immediately prior  to
the  Effective Time. If certificates representing shares of CBI Common Stock are
presented after the  Effective Time,  they will  be canceled  and exchanged  for
certificates representing the applicable shares of U. S. Bancorp Common Stock.
 
    No  fractional shares of  U. S. Bancorp  Common Stock will  be issued to any
holder of CBI Common Stock upon consummation of the Merger. For each  fractional
share  that would otherwise be issued, U. S.  Bancorp will pay cash in an amount
equal to such fraction multiplied by the  average of the closing sale prices  of
U.  S. Bancorp Common Stock on the  NASDAQ National Market System as reported by
THE WALL STREET JOURNAL for the five trading days immediately preceding the date
of the Effective Time. No interest will be  paid or accrued on the cash in  lieu
of fractional shares payable to holders of such certificates.
 
    Neither  U. S. Bancorp  nor CBI nor any  other person will  be liable to any
former holder of CBI Common Stock for any amount properly delivered to a  public
official  pursuant to applicable abandoned property, escheat or similar laws. If
a   certificate   for   CBI   Common   Stock   has   been   lost,   stolen    or
 
                                       25
<PAGE>
destroyed,  the Exchange Agent will issue  the consideration properly payable in
accordance with the  Merger Agreement  upon the making  of an  affidavit of  the
loss,  theft, or  destruction of  such certificate  by the  person claiming such
loss, theft, or destruction and,  if required by U.  S. Bancorp, the posting  by
such  person  of  a bond  in  such amount  as  U.  S. Bancorp  may  determine is
reasonably necessary as indemnity against any claim that may be made against  it
with respect to the loss, theft, or destruction of such certificate.
 
    For a description of the differences between the rights of the holders of U.
S. Bancorp capital stock and CBI capital stock, see "Comparison of Shareholders'
Rights."
 
EFFECTIVE TIME
 
    The  Effective Time will be as set forth in the articles of merger that will
be filed with the Secretary of State of the state of Oregon and the  certificate
of  merger  that will  be filed  with the  Secretary  of State  of the  state of
Delaware, in each case on the closing  date of the Merger (the "Closing  Date").
The Closing Date will occur on a date to be specified by the parties which shall
be no later than five business days after the satisfaction or waiver (subject to
applicable law) of the latest to occur of the conditions precedent to the Merger
set  forth  in Article  VII of  the  Merger Agreement.  The Merger  is presently
expected to  be consummated  during the  second  half of  1996, subject  to  the
receipt  of regulatory approvals  and the satisfaction  of other conditions. The
consummation of the Merger may be delayed as a result of delays in obtaining the
necessary regulatory approvals. There can be no assurances as to if or when such
approvals will be obtained or that the Merger will be consummated. If the Merger
is not effected  on or  before January  31, 1997,  the Merger  Agreement may  be
terminated  by either  U. S. Bancorp  or CBI,  unless the failure  to effect the
Merger by such date is due to the failure of the party seeking to terminate  the
Merger  Agreement to  perform or  observe the  covenants and  agreements of such
party set forth therein.  See "The Merger --  Conditions to the Consummation  of
the Merger" and "-- Regulatory Approvals Required for the Merger."
 
REPRESENTATIONS AND WARRANTIES
 
    The  Merger  Agreement  contains  representations and  warranties  of  U. S.
Bancorp and CBI as  to, among other things,  (i) the corporate organization  and
existence  of each party  and its subsidiaries; (ii)  the capitalization of each
party and its  subsidiaries; (iii)  the corporate  power and  authority of  each
party;  (iv) the  compliance of  the Merger Agreement  with (A)  the charter and
bylaws of each party, (B) applicable  law, and (C) certain material  agreements;
(v)  governmental and third party approvals;  (vi) the timely filing of required
regulatory reports; (vii) each party's financial statements and filings with the
SEC; (viii)  the absence  of  certain changes  in  each party's  business  since
December  31,  1994; (ix)  the absence  of material  legal proceedings;  (x) the
filing and accuracy  of each  party's tax  returns; (xi)  each party's  employee
benefit plans and related matters; (xii) each party's compliance with applicable
law;  (xiii) the  absence of  material defaults  under certain  contracts; (xiv)
agreements between  each party  and  regulatory agencies;  (xv) the  absence  of
undisclosed liabilities; (xvi) the inapplicability to the Merger of the Delaware
or Oregon takeover laws; and (xvii) interest rate risk management arrangements.
 
CONDUCT OF BUSINESS PENDING THE MERGER AND OTHER AGREEMENTS
 
    Pursuant to the Merger Agreement, prior to the Effective Time CBI has agreed
to,  and to cause  its subsidiaries to,  (i) conduct its  business in the usual,
regular and ordinary course consistent  with past practice, (ii) use  reasonable
best  efforts  to  maintain  and  preserve  intact  its  business  organization,
employees and advantageous business relationships and retain the services of its
officers and key employees, and (iii) take no action that would adversely affect
or delay the  ability of either  U. S. Bancorp  or CBI to  obtain any  necessary
governmental  or regulatory approvals required for the transactions contemplated
by the Merger  Agreement or to  perform its covenants  and agreements under  the
Merger Agreement or the Option Agreement.
 
    U. S. Bancorp and CBI have agreed to cooperate with each other and use their
reasonable   best   efforts  to   promptly  prepare   and  file   all  necessary
documentation, to effect all applications,  notices, petitions and filings,  and
to  obtain  as  promptly as  practicable  all permits,  consents,  approvals and
 
                                       26
<PAGE>
authorizations of all third parties and governmental entities that are necessary
or advisable to consummate the transactions contemplated by the Merger Agreement
and to  comply with  the terms  and conditions  of all  such permits,  consents,
approvals  and  authorizations. U.  S.  Bancorp and  CBI  have each  agreed upon
request to furnish to the other party all information concerning themselves  and
their  subsidiaries, directors, officers and shareholders and such other matters
as may be reasonably necessary or advisable in connection with the Merger. U. S.
Bancorp and CBI have  also agreed, subject  to the terms  and conditions of  the
Merger  Agreement, to use their reasonable best  efforts to take, or cause to be
taken, all actions necessary,  proper or advisable to  comply promptly with  all
legal  requirements that may be imposed on such party or its subsidiaries and to
consummate the Merger. U. S.  Bancorp also agreed to cause  the shares of U.  S.
Bancorp  Common Stock to be  issued in the Merger to  be approved for listing on
the NASDAQ National Market System.
 
    Each of U. S.  Bancorp and CBI  has further agreed to  give the other  party
access  to all of its properties,  books, contracts, commitments and records and
to furnish information  concerning its businesses,  properties and personnel  to
the other party, subject to the restrictions set forth in the Merger Agreement.
 
    Except  as expressly contemplated by the  Merger Agreement or specified in a
schedule thereto or  as contemplated  by the  Option Agreement,  CBI has  agreed
that,  without the prior written consent of U. S. Bancorp, it will not, and will
not permit any of its subsidiaries to, among other things:
 
        (i) other than in the ordinary  course of business consistent with  past
    practice,  incur any indebtedness for  borrowed money (other than short-term
    indebtedness incurred to refinance short-term indebtedness and  indebtedness
    of  CBI  or any  of its  subsidiaries to  CBI or  any of  its subsidiaries),
    assume,  guarantee,  endorse  or   otherwise  as  an  accommodation   become
    responsible  for  the obligations  of any  individual, corporation  or other
    entity, or make any loan or advance;
 
        (ii) adjust,  split,  combine or  reclassify  any capital  stock;  make,
    declare  or pay any dividend or make  any other distribution on, or directly
    or indirectly  redeem, purchase  or  otherwise acquire,  any shares  of  its
    capital   stock  or  any  securities  or  obligations  convertible  into  or
    exchangeable for  any  shares of  its  capital  stock, or  grant  any  stock
    appreciation  rights or grant to any individual, corporation or other entity
    any right to  acquire any shares  of its capital  stock (except for  regular
    quarterly  cash dividends at a rate not in  excess of the rate being paid at
    the date of the Merger Agreement as such rate may be increased at times  and
    in  amounts as are  consistent with past practice,  and except for dividends
    paid by any of the wholly owned  subsidiaries of CBI or any of their  wholly
    owned  subsidiaries); or issue any additional shares of capital stock except
    pursuant to (A) the exercise of stock options outstanding as of the date  of
    the  Merger  Agreement,  (B)  the  Option  Agreement,  (C)  the  CBI  Rights
    Agreement, or  (D) the  CBI Dividend  Reinvestment and  Stock Purchase  Plan
    until such plan is terminated;
 
       (iii)  sell, transfer, mortgage, encumber or  otherwise dispose of any of
    its properties  or assets  to any  individual, corporation  or other  entity
    other  than a direct or indirect wholly owned subsidiary, or cancel, release
    or assign any indebtedness to any such person or any claims held by any such
    person, except  in the  ordinary  course of  business consistent  with  past
    practice  or pursuant to contracts or agreements in force at the date of the
    Merger Agreement;
 
       (iv)  except  for  transactions  in  the  ordinary  course  of   business
    consistent  with  past  practice,  make any  material  investment  either by
    purchase  of  stock  or  securities,  contributions  to  capital,   property
    transfers,  or purchase of  any property or assets  of any other individual,
    corporation or other entity other than a wholly owned subsidiary thereof;
 
        (v)  except  for  loans,  deposits,  letters  of  credit,  and   similar
    transactions  in  the  ordinary  course  of  business  consistent  with past
    practice, (A) enter into any contract  or agreement that involves an  amount
    in  excess of $100,000 or that  will have a term in  excess of one year, (B)
    terminate or materially modify  any contract or  agreement that involves  an
    amount in excess
 
                                       27
<PAGE>
    of  $100,000 or  that has  a remaining term  in excess  of one  year, or (C)
    commit to  any capital  expenditure,  or make  any capital  expenditure  not
    committed  to  prior to  the  date of  the  Merger Agreement,  in  excess of
    $10,000;
 
       (vi) increase in any manner the compensation or fringe benefits of any of
    its employees other than increases for  employees in the ordinary course  of
    business  consistent with  past practice  or pay  any pension  or retirement
    allowance not  required  by any  existing  plan  or agreement  to  any  such
    employees  or become  a party  to, amend  or commit  itself to  any pension,
    retirement,  profit-sharing  or  welfare   benefit  plan  or  agreement   or
    employment  agreement with  or for  the benefit  of any  employee other than
    amendments  required  to  comply  with  applicable  legal  requirements   or
    accelerate   the  vesting  of   any  stock  options   or  other  stock-based
    compensation;
 
       (vii) solicit,  encourage or  authorize  any individual,  corporation  or
    other  entity to  solicit from  any third  party any  inquiries or proposals
    relating to the disposition of its business or assets, or the acquisition of
    its voting securities, or the merger of  it or any of its subsidiaries  with
    any  corporation  or  other entity  other  than  as provided  by  the Merger
    Agreement (and CBI will promptly notify U. S. Bancorp of all of the relevant
    details relating  to  all  inquiries  and proposals  which  it  may  receive
    relating  to any of such matters) or  unless CBI shall have determined based
    upon the written advice  of counsel that  fiduciary duties under  applicable
    law  require  otherwise,  participate  in  any  negotiations  concerning  or
    otherwise facilitate any such transaction;
 
      (viii) settle any  claim, action  or proceeding  involving money  damages,
    except in the ordinary course of business consistent with past practice;
 
       (ix)  take  any  action that  would  prevent  or impede  the  Merger from
    qualifying as a  reorganization within  the meaning  of Section  368 of  the
    Code;
 
        (x) amend its certificate of incorporation or its bylaws;
 
       (xi)  other than in prior consultation with U. S. Bancorp, restructure or
    materially change its investment securities  portfolio or its gap  position,
    through  purchases, sales or otherwise, or the manner in which the portfolio
    is classified or reported;
 
       (xii) take any action that is  intended or may reasonably be expected  to
    result  in any of its representations and warranties set forth in the Merger
    Agreement being or becoming untrue in any material respect at any time prior
    to the Effective Time, or in any  of the conditions to the Merger not  being
    satisfied  or  in a  violation  of any  provision  of the  Merger Agreement,
    except, in every case, as may be required by applicable law; or
 
      (xiii) agree to, or make any commitment to, take any of the actions listed
    above.
 
    Except as expressly contemplated by the Merger Agreement, U. S. Bancorp  has
agreed  that without the prior written consent of  CBI it will not, and will not
permit any of its subsidiaries to, among other things:
 
        (i) reclassify any  of its capital  stock or make,  declare, or pay  any
    dividend or make any other distribution on, any shares of its capital stock,
    or  any securities or  obligations convertible into  or exchangeable for any
    shares of its capital stock (except for regular quarterly cash dividends  at
    a  rate not in excess of such rate as U. S. Bancorp from time to time adopts
    as its regular quarterly dividend rate and except for dividends paid by  any
    of its wholly owned subsidiaries or any of their wholly owned subsidiaries);
 
        (ii)  take  any action  that  would prevent  or  impede the  Merger from
    qualifying as a  reorganization within  the meaning  of Section  368 of  the
    Code;  provided,  however, that  nothing contained  in the  Merger Agreement
    shall limit the ability of  U. S. Bancorp to  exercise its rights under  the
    Option Agreement;
 
       (iii)  take any action that is intended  or may reasonably be expected to
    result in any of its representations and warranties set forth in the  Merger
    Agreement being or becoming untrue in
 
                                       28
<PAGE>
    any  material respect at any time prior to  the Effective Time, or in any of
    the conditions to the Merger  not being satisfied or  in a violation of  any
    provision of the Merger Agreement, except, in every case, as may be required
    by applicable law;
 
       (iv)  take any action that would adversely affect or delay its ability to
    obtain  any  necessary   approvals  of  any   regulatory  agency  or   other
    governmental  authority required for the transactions contemplated hereby or
    to perform its covenants and agreements under the Merger Agreement;
 
        (v) amend  its articles  of  incorporation except  with respect  to  the
    establishment of one or more series of preferred stock; or
 
       (vi)  agree to, or make any commitment to, take any of the actions listed
    above.
 
CONDITIONS TO THE CONSUMMATION OF THE MERGER
 
    Each party's obligation to effect the Merger is subject to the  satisfaction
or  waiver, where permissible,  of the following  conditions at or  prior to the
Effective Time:
 
        (i) the Merger Agreement and the transactions contemplated thereby shall
    have been approved by the requisite  affirmative vote of the holders of  CBI
    Common Stock entitled to vote thereon;
 
        (ii)  the shares of U. S. Bancorp Common  Stock that are to be issued to
    CBI stockholders upon consummation of the Merger shall have been  authorized
    for listing on the NASDAQ National Market System;
 
       (iii)  all regulatory  approvals required to  consummate the transactions
    contemplated by the Merger  Agreement shall have  been obtained without  the
    imposition  of  any  conditions  that are,  in  U.  S.  Bancorp's reasonable
    judgment, unduly burdensome and  shall remain in full  force and effect  and
    all  statutory waiting  periods with  respect to  such approvals  shall have
    expired (the  "Requisite  Regulatory  Approvals"), and  all  other  material
    consents  or approvals  of any third  party required in  connection with the
    consummation of  the Merger  shall have  been obtained;  provided that,  for
    purposes  of this  condition, a divestiture  required as a  condition to any
    regulatory approval shall not be deemed unduly burdensome if consistent with
    the recent practices  of the  Federal Reserve  Board and  the United  States
    Department of Justice (the "Justice Department");
 
       (iv)  the registration statement of which this Proxy Statement/Prospectus
    forms a part shall  have become effective and  no stop order suspending  the
    effectiveness  shall have  been issued and  no proceedings  for that purpose
    shall have been initiated or threatened by the SEC;
 
        (v) no order,  injunction or  decree issued by  any court  or agency  of
    competent  jurisdiction or  other legal restraint  or prohibition preventing
    the consummation of the Merger or any of the other transactions contemplated
    by the Merger Agreement shall be in effect and no statute, rule, regulation,
    order, injunction or decree shall have been enacted, entered, promulgated or
    enforced  by  any  court,  administrative  agency  or  commission  or  other
    governmental  authority  or  instrumentality which  prohibits,  restricts or
    makes illegal consummation of the Merger;
 
       (vi) U.  S. Bancorp  shall  have received  an  opinion of  Miller,  Nash,
    Wiener,  Hager  & Carlsen,  counsel to  U.  S. Bancorp,  and CBI  shall have
    received an opinion of  Wachtell, Lipton, Rosen &  Katz, counsel to CBI,  in
    form  and substance reasonably  satisfactory to U. S.  Bancorp and CBI, each
    dated as of  the Effective Time,  substantially to the  effect that, on  the
    basis  of facts, representations  and assumptions set  forth in such opinion
    which are consistent with the state of facts existing at the Effective Time,
    the Merger will be treated for Federal income tax purposes as part of one or
    more reorganizations within the meaning of Section 368 of the Code and  that
    accordingly  (A) no gain or  loss will be recognized by  U. S. Bancorp or by
    CBI as a result of the Merger; (B) no gain or loss will be recognized by the
    stockholders of CBI who  exchange their CBI Common  Stock for U. S.  Bancorp
    Common Stock pursuant to the Merger (except with respect to cash received in
    lieu  of a fractional share interest in U. S. Bancorp Common Stock); and (C)
    the
 
                                       29
<PAGE>
    tax basis of  the U. S.  Bancorp Common Stock  received by stockholders  who
    exchange all of their CBI Common Stock solely for U. S. Bancorp Common Stock
    in  the Merger will  be the same  as the tax  basis of the  CBI Common Stock
    surrendered in  exchange therefor  (reduced  by any  amount allocable  to  a
    fractional  share  interest for  which cash  is  received) (see  "-- Certain
    Federal Income Tax Consequences");
 
       (vii) the representations and warranties of the other party to the Merger
    Agreement shall be true and correct in all material respects as of the  date
    of  the Merger Agreement and (except  to the extent such representations and
    warranties speak as of an earlier date)  as of the Effective Time as  though
    made at the Effective Time;
 
      (viii)  each  party  shall have  performed  in all  material  respects all
    obligations required to be performed by it under the Merger Agreement at  or
    prior to the Effective Time; and
 
       (ix)  the rights  issued pursuant to  the CBI Rights  Agreement shall not
    have become nonredeemable, exercisable, distributed or triggered pursuant to
    the terms of such agreement (see
    "-- The CBI Rights Agreement").
 
    No assurance  can be  provided as  to if  or when  the Requisite  Regulatory
Approvals  necessary to consummate the Merger will be obtained or whether all of
the other conditions precedent to the Merger will be satisfied or waived by  the
party permitted to do so. If the Merger is not effected on or before January 31,
1997,  the Merger Agreement  may be terminated  by either U.  S. Bancorp or CBI,
unless the failure to effect  the Merger by such date  is due to the failure  of
the  party  seeking to  terminate  the Merger  Agreement  to perform  or observe
covenants and agreements of such party set forth therein.
 
REGULATORY APPROVALS REQUIRED FOR THE MERGER
 
    U. S. Bancorp and CBI  have agreed to use  their reasonable best efforts  to
obtain  the  Requisite Regulatory  Approvals,  which include  approval  from the
Federal Reserve  Board  and the  California  bank regulatory  authority.  U.  S.
Bancorp filed an application for approval of the Merger with the Federal Reserve
Board  on  March  29,  1996.  The parties  intend  to  file  additional required
information and applications for Requisite  Regulatory Approvals in due  course.
The  Merger cannot proceed in the absence of the Requisite Regulatory Approvals.
There can be no assurance as to  when or if such Requisite Regulatory  Approvals
will  be obtained and, if obtained, there can  be no assurance as to the absence
of  any  conditions  or  requirements  in  such  approvals  or  any   litigation
challenging  such approvals. There can likewise be no assurance that the Justice
Department or  the  California  state  attorney  general  will  not  attempt  to
challenge the Merger on antitrust grounds or, if such a challenge is made, as to
the outcome.
 
    U.  S. Bancorp and CBI are not  aware of any other governmental approvals or
actions that are required prior to the parties' consummation of the Merger other
than those  described below.  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
approvals or actions will be obtained.
 
    FEDERAL  RESERVE BOARD.   The Merger is  subject to approval  by the Federal
Reserve Board pursuant to Sections 3 and 4 of the BHCA. Assuming Federal Reserve
Board approval,  the Merger  may not  be consummated  until 30  days after  such
approval,  during which time the Justice  Department 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 Justice Department, this
waiting period may be reduced to not less than 15 days.
 
    The Federal Reserve Board is prohibited from approving any transaction under
the applicable statutes which:
 
                                       30
<PAGE>
        (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
 
        (ii)  may  have  the  effect  in  any  area  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  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 U. S.  Bancorp and  CBI, and the  overall capital  and
safety  and  soundness standards  established by  the Federal  Deposit Insurance
Corporation Improvement Act of 1991  ("FDICIA") 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 U. S. Bancorp and CBI in meeting the credit needs of the
entire community, including  low and  moderate income  neighborhoods, served  by
each company. All of the banking subsidiaries of both U. S. Bancorp and CBI have
received a rating of either "satisfactory" or "outstanding" in their most recent
CRA examinations by their respective supervising banking regulator.
 
    The  Federal Reserve Board will furnish notice and a copy of the application
for approval of the Merger to the Office of the Comptroller of the Currency (the
"OCC"),  the  Federal  Deposit  Insurance  Corporation  (the  "FDIC"),  and  the
appropriate  state regulatory authorities. 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  BHCA and Federal Reserve
Board regulations  require publication  of notice  of, and  the opportunity  for
public  comment on, the application  submitted by U. S.  Bancorp 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.
 
    The commencement of an antitrust action by the Justice Department would stay
the effectiveness of Federal Reserve Board approval of the Merger unless a court
specifically  orders otherwise. In reviewing  the Merger, the Justice Department
could analyze the Merger's  effect on competition  differently than the  Federal
Reserve Board, and thus it is possible that the Justice Department could reach a
different  conclusion  than the  Federal  Reserve Board  regarding  the Merger's
competitive effects. The Justice Department is  likely to examine the impact  of
the  Merger  on competition  for loans  to small  and middle  market businesses.
Failure of the Justice Department  to object to the  Merger may not prevent  the
filing of an antitrust action by the California state attorney general.
 
    Using  the above  standards, U. S.  Bancorp and  CBI do not  expect that the
Federal Reserve Board or the Justice Department will request that U. S.  Bancorp
or  CBI  divest any  operations  in order  to  alleviate an  adverse competitive
effect. Under  the Merger  Agreement, however,  U. S.  Bancorp and  CBI are  not
obligated  to  consummate the  Merger if  any  Requisite Regulatory  Approval is
subject to the imposition of any conditions that are unduly burdensome in U.  S.
Bancorp's  reasonable judgment. A divestiture required  as such a condition will
not be considered unduly burdensome if consistent with guidelines, policies  and
practices  of the  Federal Reserve  Board and  Justice Department  regarding the
merger of bank holding  companies that have been  utilized in transactions  that
had recently been reviewed prior to the date of the Merger Agreement.
 
                                       31
<PAGE>
    U.  S. Bancorp's right to exercise its  Option under the Option Agreement is
also subject to the prior approval of  the Federal Reserve Board, to the  extent
that the exercise of the Option would result in U. S. Bancorp's owning more than
5  percent of the outstanding shares of CBI Common Stock. In considering whether
to approve  U. S.  Bancorp's exercise  of  the Option,  including the  right  to
purchase  more than 5 percent of the outstanding shares of CBI Common Stock, the
Federal Reserve Board would generally apply the same statutory criteria it would
apply to its consideration of approval of the Merger.
 
    STATE REGULATORY REQUIREMENTS.   The Merger is also  subject to approval  by
the  bank regulatory agency in the state  of California. In addition, the Merger
may be  reviewed by  the California  state  attorney general.  There can  be  no
assurance  that an antitrust  action will not  be filed to  enjoin the Merger or
that CBI and U. S. Bancorp will  agree to divest assets and liabilities or  take
other actions to avoid or settle any such action.
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    GENERAL.   The  following is a  summary description of  the material federal
income  tax  consequences  of  the  Merger.  This  summary  is  not  a  complete
description of all of the consequences of the Merger and, in particular, may not
address  federal income  tax considerations that  may affect the  treatment of a
stockholder which,  at the  Effective  Time, already  owns  some U.  S.  Bancorp
capital stock, is not a U.S. person, is a tax-exempt entity or an individual who
acquired  CBI Common  Stock pursuant to  an employee stock  option, or exercises
some form of control  over CBI. In addition,  no information is provided  herein
with  respect to  the tax consequences  of the Merger  under applicable foreign,
state or local laws. Consequently, each CBI stockholder is advised to consult  a
tax  adviser as  to the  specific tax  consequences of  the transaction  to that
stockholder. The following discussion is based on  the Code as in effect on  the
date of this Proxy Statement/Prospectus, without consideration of the particular
facts or circumstances of any holder of CBI Common Stock.
 
    THE MERGER.  U. S. Bancorp has received the opinion of Miller, Nash, Wiener,
Hager  & Carlsen, its outside general counsel,  and CBI has received the opinion
of Wachtell, Lipton, Rosen & Katz, its  special counsel, to the effect that  for
federal income tax purposes:
 
        (i)  no gain or loss will be recognized by  U. S. Bancorp or by CBI as a
    result of the Merger;
 
        (ii) no  gain or  loss will  be recognized  by stockholders  upon  their
    exchange  of CBI Common Stock for U.  S. Bancorp Common Stock, except that a
    CBI stockholder who  receives cash proceeds  in lieu of  a fractional  share
    interest  in U. S. Bancorp Common Stock will recognize gain or loss equal to
    the difference between  such proceeds  and the  tax basis  allocated to  the
    fractional  share interest,  and such gain  or loss  will constitute capital
    gain or loss if  such stockholder's CBI Common  Stock with respect to  which
    gain or loss is recognized is held as a capital asset at the Effective Time;
 
       (iii)  the tax basis of the U. S.  Bancorp Common Stock received by a CBI
    stockholder who exchanges  his or  her CBI Common  Stock for  U. S.  Bancorp
    Common  Stock will be the same as such stockholder's tax basis in the Common
    Stock surrendered in exchange therefor; and
 
       (iv) the holding period of the U.  S. Bancorp Common Stock received by  a
    CBI  stockholder will include  the period during which  the CBI Common Stock
    surrendered in exchange  therefor was  held (provided that  such CBI  Common
    Stock  was held by such CBI stockholder  as a capital asset at the Effective
    Time).
 
    Such opinions have  been filed  as exhibits to  the Registration  Statement.
Receipt  of substantively  the same  opinion by  each party  from its respective
legal counsel, each dated as of the Effective Time, is a non-waivable  condition
to   consummation  of  the  Merger.  The  opinions  filed  as  exhibits  to  the
Registration Statement are,  and the opinions  to be given  as of the  Effective
Time  will be,  based on certain  customary assumptions  and representations set
forth therein.
 
                                       32
<PAGE>
    INFORMATION REPORTING AND BACKUP  WITHHOLDING.  Payments  in respect of  CBI
Common  Stock may  be subject to  information reporting to  the Internal Revenue
Service and to a 31% backup withholding tax. Backup withholding will not  apply,
however, to a payment to a CBI stockholder or other payee if such stockholder or
payee  completes and signs the substitute Form W-9 that will be included as part
of the transmittal letter or otherwise proves to U. S. Bancorp and the  Exchange
Agent that it is exempt from backup withholding.
 
ACCOUNTING TREATMENT
 
    Upon  consummation  of  the  Merger,  U. S.  Bancorp  will  account  for the
acquisition of CBI  using the  purchase method of  accounting. Accordingly,  the
consideration  to be paid in the Merger will be allocated to assets acquired and
liabilities assumed based on their estimated fair values at the Effective  Time.
Income  (or loss)  of CBI prior  to the Effective  Time will not  be included in
income of the combined company.
 
    The purchase method of  accounting will permit U.  S. Bancorp to  repurchase
shares of U. S. Bancorp Common Stock from time to time in the open market, up to
the  approximately 9.6 million shares to be  issued in the Merger. U. S. Bancorp
expects to  obtain  the  funds  for  the purchase  of  such  shares  from  asset
maturities  and  sales, the  issuance  of debt  and  other sources  of liquidity
available to U. S. Bancorp.
 
TERMINATION OF THE MERGER AGREEMENT
 
    The Merger Agreement provides that the Merger may be terminated at any  time
prior  to  the Effective  Time,  whether before  or  after approval  by  the CBI
stockholders:
 
        (i) by mutual consent of U. S. Bancorp and CBI in a written  instrument,
    if  the Board of Directors of each so  determines by a vote of a majority of
    the members of its entire Board;
 
        (ii) by the Board  of Directors of  either U. S. Bancorp  or CBI if  any
    governmental  entity which  must grant  a Requisite  Regulatory Approval has
    denied approval  of  the  Merger  and  such  denial  has  become  final  and
    non-appealable  or any  governmental entity of  competent jurisdiction shall
    have issued a final non-appealable order enjoining or otherwise  prohibiting
    the consummation of the transactions contemplated by the Merger Agreement;
 
       (iii)  by the Board  of Directors of either  U. S. Bancorp  or CBI if the
    Merger shall not have been consummated on or before January 31, 1997, unless
    the failure of the Effective Time of the Merger to occur by such date  shall
    be due to the failure of the party seeking to terminate the Merger Agreement
    to  perform or observe the covenants and  agreements of such party set forth
    therein;
 
       (iv) by the Board of Directors of  either U. S. Bancorp or CBI  (provided
    that   the  terminating  party  is  not  then  in  material  breach  of  any
    representation, warranty, covenant or other agreement contained therein)  if
    there  shall  have  been  a  material breach  of  any  of  the  covenants or
    agreements or any  of the  representations or  warranties set  forth in  the
    Merger  Agreement on the part of the  other party, which breach is not cured
    within 45 days following written notice to the party committing such breach,
    or which breach, by its nature, cannot be cured prior to the Effective Time;
    or
 
        (v) by either U. S. Bancorp or  CBI if approval by the CBI  stockholders
    has  not been obtained by reason of  the failure to obtain the required vote
    at a duly held  meeting of stockholders or  any adjournment or  postponement
    thereof.
 
    Whether  or not the Merger is consummated, all fees and expenses incurred in
connection with the  Merger and  the transactions contemplated  thereby will  be
paid by the party incurring such expenses.
 
WAIVER AND AMENDMENT OF THE MERGER AGREEMENT
 
    WAIVER.   At any time prior to the Effective Time, U. S. Bancorp and CBI, by
action taken or authorized by their respective Boards of Directors, may, to  the
extent legally allowed, (i) extend the
 
                                       33
<PAGE>
time  for the performance of  any of the obligations or  other acts of the other
party; (ii) waive any inaccuracies in the representations and warranties of  the
other  party  contained in  the Merger  Agreement or  in any  document delivered
pursuant to the Merger Agreement; or  (iii) waive compliance by the other  party
with  any of  its agreements  or conditions  contained in  the Merger Agreement.
After approval of the Merger Agreement by the stockholders of CBI, in the  event
the  companies contemplate waiver of a provision  of the Merger Agreement of the
type which by law may not be made without approval of the stockholders of either
or both companies, CBI or U. S. Bancorp or both, as may be required by law, will
solicit proxies  from  such company's  respective  stockholders to  obtain  such
approval. In the event that the companies contemplate a waiver which changes the
form  or  reduces the  amount of  consideration that  is to  be received  by CBI
stockholders in the Merger pursuant to the Merger Agreement, CBI will  resolicit
proxies from its stockholders to obtain approval for such waiver.
 
    AMENDMENT.   Subject to compliance with applicable law, the Merger Agreement
may be amended by U. S. Bancorp and  CBI by action taken or authorized by  their
respective  Boards  of  Directors at  any  time.  After approval  of  the Merger
Agreement by the  CBI stockholders, in  the event the  companies contemplate  an
amendment  to a provision of  the Merger Agreement of the  type which by law may
not be made without  approval of the stockholders  of either or both  companies,
CBI  or U. S. Bancorp or  both, as may be required  by law, will solicit proxies
from such  company's respective  stockholders to  obtain such  approval. In  the
event  that the  companies contemplate  an amendment  which changes  the form or
reduces the amount of consideration that  is to be received by CBI  stockholders
in  the Merger pursuant to the Merger Agreement, CBI will resolicit proxies from
its stockholders to obtain approval for such amendment.
 
STOCK OPTION AGREEMENT
 
    The Option Agreement is filed as an exhibit to the Registration Statement of
which this Proxy Statement/Prospectus  is a part and  the summary of certain  of
its  terms  set forth  below is  subject to,  and qualified  in its  entirety by
reference to, such exhibit. Wherever particular sections or defined terms in the
Option  Agreement  are  referred  to,   such  sections  or  defined  terms   are
incorporated  herein by reference. The Option  Agreement is intended to increase
the likelihood that the Merger will be consummated in accordance with the  terms
of  the Merger Agreement. Consequently, certain  aspects of the Option Agreement
may have  the effect  of discouraging  persons who  might now  or prior  to  the
Effective  Time be interested in  acquiring all of or  a significant interest in
CBI from considering or proposing such an acquisition, even if such persons were
prepared to  offer to  pay consideration  to the  CBI stockholders  which had  a
higher  current market price than the shares of U. S. Bancorp Common Stock to be
received per share of CBI Common Stock pursuant to the Merger Agreement.
 
    The Option Agreement provides  for the purchase  by U. S.  Bancorp of up  to
2,002,076  shares (the "Option Shares") of CBI Common Stock at an exercise price
of $25.75 per share, payable in cash.  The Option Shares, if issued pursuant  to
the  Option Agreement,  will in no  event exceed  19.9% of the  CBI Common Stock
issued and outstanding without giving effect  to the issuance of any CBI  Common
Stock subject to the Option. (Section 1)
 
    The  number of  shares of  CBI Common  Stock subject  to the  Option will be
increased to the  extent that additional  shares of Common  Stock are issued  or
otherwise  become outstanding (other  than pursuant to  exercise of the Option),
such that, after  such issuance, the  number of Option  Shares will continue  to
equal  19.9% of the CBI Common Stock  then issued and outstanding without giving
effect to the issuance of any CBI  Common Stock subject to the Option.  (Section
1(b))  In the event of any change in, or distributions in respect of, the shares
of  CBI  Common  Stock  by  reason  of  a  stock  dividend,  split-up,   merger,
recapitalization,  combination,  subdivision,  conversion,  exchange  of shares,
distribution on or in respect of  such CBI Common Stock or similar  transaction,
the type and number of Option Shares purchasable upon exercise of the Option and
the  option price will also be adjusted in  such a manner as will fully preserve
the economic benefits of the Option. (Section 5)
 
    The Option Agreement  provides that  U. S. Bancorp  or any  other holder  or
holders  of the Option (as used herein, collectively, the "Holder") may exercise
the Option, in whole or in part, subject to
 
                                       34
<PAGE>
regulatory approval, if both an Initial Triggering Event (as defined below)  and
a  Subsequent Triggering Event  (as defined below) shall  have occurred prior to
the occurrence of  an Exercise  Termination Event (as  defined below);  provided
that the Holder shall have sent to CBI written notice of such exercise within 90
days  following  such  Subsequent  Triggering  Event  (subject  to  extension as
provided in  the  Option Agreement).  The  terms Initial  Triggering  Event  and
Subsequent  Triggering Event generally  relate to attempts by  one or more third
parties to acquire  a significant interest  in CBI. Any  exercise of the  Option
will be deemed to occur on the date such notice is sent. (Section 2(a))
 
    For purposes of the Option Agreement:
 
        (i)  The term "Initial Triggering Event"  means the occurrence of any of
    the following events or transactions after February 12, 1996: (A) CBI or any
    subsidiary of CBI, without U. S. Bancorp's prior written consent, shall have
    entered into  an  agreement  to  engage in,  or  the  CBI  Board  recommends
    stockholder  acceptance  or  approval  of,  an  Acquisition  Transaction (as
    defined below) with any person or  group (other than as contemplated by  the
    Merger  Agreement);  (B)  the CBI  Board  shall have  publicly  withdrawn or
    modified, or publicly announced its intention to withdraw or modify, in  any
    manner  adverse to  U. S. Bancorp  its recommendation  that its stockholders
    approve the Merger Agreement;  (C) any person, other  than U. S. Bancorp  or
    any  subsidiary of  U. S.  Bancorp, acting  in a  fiduciary capacity  in the
    ordinary course of business, acquires beneficial ownership, or the right  to
    acquire  beneficial ownership, of  15% or more of  the outstanding shares of
    the CBI  Common Stock;  (D)  any person  other than  U.  S. Bancorp  or  any
    subsidiary  of U. S. Bancorp shall have made  a bona fide proposal to CBI or
    its stockholders by public announcement or written communication that  shall
    be  or becomes the subject of public  disclosure to engage in an Acquisition
    Transaction; (E)  CBI breaches  any  covenant or  obligation in  the  Merger
    Agreement after any person, other than U. S. Bancorp or any subsidiary of U.
    S.  Bancorp, has  proposed an  Acquisition Transaction  and such  breach (1)
    would entitle U. S. Bancorp to terminate the Merger Agreement and (2) is not
    remedied prior to the date of U. S. Bancorp's notice to CBI of the  exercise
    of  the Option; or (F) any person other than U. S. Bancorp or any subsidiary
    of U. S. Bancorp, other than in connection with a transaction to which U. S.
    Bancorp has given its prior written consent, shall have filed an application
    or notice with  the Federal Reserve  Board, or other  federal or state  bank
    regulatory  authority,  which application  or notice  has been  accepted for
    processing, for approval to engage  in an Acquisition Transaction.  (Section
    2(b))
 
        (ii)   The  term  "Acquisition  Transaction"   means  (A)  a  merger  or
    consolidation, or any similar transaction with CBI or any of its Significant
    Subsidiaries (as defined in Rule 1-02 of  Regulation S-X of the SEC); (B)  a
    purchase,  lease or other acquisition of all or a substantial portion of the
    assets of CBI  or any  of its Significant  Subsidiaries; (C)  a purchase  or
    other acquisition of securities representing 10% or more of the voting power
    of  CBI or  any of  its Significant  Subsidiaries; or  (D) any substantially
    similar transaction;  provided, however,  that  in no  event shall  any  (x)
    merger,   consolidation  or   similar  transaction  involving   CBI  or  any
    Significant Subsidiary in  which the  voting securities  of CBI  outstanding
    immediately  prior  thereto  continue  to  represent  (by  either  remaining
    outstanding or being converted into  the voting securities of the  surviving
    entity of any such transaction) at least 65% of the combined voting power of
    the voting securities of CBI or the surviving entity outstanding immediately
    after  the consummation of such merger, consolidation or similar transaction
    or (y) merger, consolidation, purchase or similar transaction involving only
    CBI and one or more of its subsidiaries or involving only any two or more of
    such subsidiaries, be deemed to be an Acquisition Transaction, provided  any
    such transaction is not entered into in violation of the terms of the Merger
    Agreement. (Section 2(b))
 
       (iii)  The  term "Subsequent  Triggering Event"  means the  occurrence of
    either of the following events or transactions after February 12, 1996:  (A)
    the  acquisition by any person of beneficial ownership of 25% or more of the
    then outstanding shares of  CBI Common Stock; or  (B) the occurrence of  the
    Initial  Triggering Event described above in  clause (i)(A), except that the
    percentage referred to in clause  (ii)(C) of the definition of  "Acquisition
    Transaction"  set forth above  shall be 25%. (Section  2(c)) The Option will
    expire upon the occurrence of an "Exercise
 
                                       35
<PAGE>
    Termination Event," defined as: (i) the  Effective Time of the Merger;  (ii)
    termination  of  the  Merger  Agreement in  accordance  with  the provisions
    thereof if such  termination occurs prior  to the occurrence  of an  Initial
    Triggering  Event, except in the case of termination of the Merger Agreement
    by U. S. Bancorp as a result of an uncured material breach by CBI of any  of
    its  representations, warranties, covenants or  agreements unless the breach
    by CBI is non-volitional;  or (iii) 12 months  after the termination of  the
    Merger  Agreement  if such  termination occurs  after  the occurrence  of an
    Initial Triggering Event  or is  a termination  by U.  S. Bancorp  due to  a
    material, volitional breach by CBI of the Merger Agreement (provided that if
    an  Initial Triggering Event continues or  occurs beyond such termination of
    the Merger Agreement and prior to  the passage of such 12-month period,  the
    Option  will terminate  12 months  from the  expiration of  the last Initial
    Triggering Event to expire, but in no  event more than 18 months after  such
    termination of the Merger Agreement). (Section 2(a))
 
    As  of the date of this Proxy Statement/Prospectus, to the best knowledge of
U. S. Bancorp  and CBI,  no Initial  Triggering Event  or Subsequent  Triggering
Event has occurred.
 
    Immediately  prior  to  the occurrence  of  a Repurchase  Event  (as defined
below), (i) following  a request  of a Holder,  delivered prior  to an  Exercise
Termination  Event, CBI  (or any successor  thereto) will  repurchase the Option
from the Holder at a price (the  "Option Repurchase Price") equal to the  amount
by  which (A) the market/offer price (as defined below) exceeds (B) the exercise
price of the Option, multiplied by the number of shares for which the Option may
then be exercised and  (ii) at the  request of the owner  of Option Shares  from
time to time (the "Owner"), delivered within 90 days of such occurrence (or such
later  period  as provided  in Section  10  of the  Option Agreement),  CBI will
repurchase such number of the  Option Shares from the  Owner as the Owner  shall
designate  at  a  price  (the  "Option Share  Repurchase  Price")  equal  to the
market/offer price  multiplied by  the number  of Option  Shares so  designated.
(Section 7)
 
    The  term "market/offer price" means the highest  of (i) the price per share
of CBI Common Stock at which a tender offer or exchange offer therefor has  been
made, (ii) the price per share of CBI Common Stock to be paid by any third party
pursuant to an agreement with CBI, (iii) the highest closing price for shares of
CBI  Common Stock within the six-month period immediately preceding the date the
Holder gives notice of the required repurchase of the Option or the Owner  gives
notice  of the required repurchase of the Option  Shares, as the case may be, or
(iv) in the event of a sale of all or a substantial portion of CBI's assets, the
sum of the price paid in such sale for such assets and the current market  value
of  the  remaining  assets  of  CBI  as  determined  by  a nationally-recognized
investment banking firm selected by the Holder or the Owner, as the case may be,
divided by the number of shares of  CBI Common Stock outstanding at the time  of
such  sale. In  determining the market/offer  price, the  value of consideration
other than cash will be determined by a nationally-recognized investment banking
firm selected by the Holder or Owner, as the case may be. However, if CBI at any
time after delivery of a notice of repurchase as described in this paragraph  is
prohibited  under applicable  law or  regulation from  delivering to  the Holder
and/or the Owner,  as appropriate, the  Option Repurchase Price  and the  Option
Share  Repurchase Price, respectively,  in full, the Holder  or Owner may revoke
its notice of repurchase of the Option  or the Option Shares either in whole  or
to  the  extent of  the prohibition,  whereupon,  in the  latter case,  CBI will
promptly (i)  deliver to  the  Holder and/or  the  Owner, as  appropriate,  that
portion of the Option Repurchase Price or the Option Share Repurchase Price that
CBI  is not prohibited from delivering and  (ii) deliver, as appropriate, (A) to
the Holder,  a  new Option  Agreement  evidencing the  right  of the  Holder  to
purchase  that number of shares of CBI  Common Stock obtained by multiplying the
number of shares of CBI Common Stock for which the surrendered Option  Agreement
was  exercisable  at the  time  of delivery  of the  notice  of repurchase  by a
fraction, the numerator of which is the Option Repurchase Price less the portion
thereof theretofore delivered to the Holder and the denominator of which is  the
Option  Repurchase Price,  and (B)  to the Owner,  a certificate  for the Option
Shares it is then so prohibited from repurchasing. A
 
                                       36
<PAGE>
"Repurchase Event" is deemed  to have occurred (i)  upon the consummation of  an
Acquisition Transaction or (ii) upon the acquisition by any person of beneficial
ownership of 50% or more of the then outstanding CBI Common Stock, provided that
a  Subsequent  Triggering  Event  shall  have  occurred  prior  to  an  Exercise
Termination Event. (Section 7)
 
    In the event that  prior to an Exercise  Termination Event, CBI enters  into
any agreement (i) to consolidate with or merge into any person, other than U. S.
Bancorp  or one  of its  subsidiaries, such  that CBI  is not  the continuing or
surviving corporation  of  such consolidation  or  merger; (ii)  to  permit  any
person,  other than U. S. Bancorp or one  of its subsidiaries, to merge into CBI
and CBI is the continuing or surviving corporation, but in connection with  such
consolidation  or merger, the outstanding shares of CBI Common Stock are changed
into or exchanged for stock or other  securities of any other person or cash  or
any  other property, or  the then outstanding  shares of CBI  Common Stock after
such merger shall represent less than  50% of the outstanding voting shares  and
voting  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 U.  S.
Bancorp  or any of its subsidiaries, then,  and in each such case, the agreement
governing  such  transaction  must  provide  that,  upon  consummation  of  such
transaction and upon the terms and conditions set forth in the Option Agreement,
the  Option  will  be  converted  into,  or  exchanged  for,  an  option  having
substantially the same terms as the Option (the "Substitute Option") to purchase
securities, at the election of the Holder, of either the acquiring person or any
person that controls the acquiring person. At  the request of the Holder of  the
Substitute  Option, the issuer of the Substitute  Option will repurchase it at a
price, and subject  to such  other terms  and conditions,  as set  forth in  the
Option Agreement. (Sections 8 and 9)
 
    Within  90 days after  the occurrence of a  Subsequent Triggering Event that
occurs prior to an Exercise Termination  Date (subject to extension as  provided
in  the Option Agreement),  U. S. Bancorp  may request CBI  to prepare, file and
keep current with respect  to the Option Shares,  a registration statement  with
the  SEC.  CBI is  required to  use its  reasonable best  efforts to  cause such
registration statement to become effective and then to remain effective for  180
days or such shorter time as may be reasonably necessary to effect such sales or
other  dispositions of the Option Shares. U.  S. Bancorp has the right to demand
two such registrations. (Section 6)
 
    Neither CBI nor U. S. Bancorp may  assign any of its rights and  obligations
under the Option Agreement or the Option to any other person without the express
written consent of the other party, except that if a Subsequent Triggering Event
occurs  prior to an  Exercise Termination Event,  U. S. Bancorp,  subject to the
terms of the Option  Agreement, may assign  in whole or in  part its rights  and
obligations  thereunder, within 90 days (subject to extension as provided in the
Option Agreement) of such Subsequent  Triggering Event; provided that until  the
date  15 days  after the  date on  which the  Federal Reserve  Board approves an
application by U. S. Bancorp to acquire the Option Shares, U. S. Bancorp may not
assign its  rights under  the Option  except in  (i) a  widely dispersed  public
distribution,  (ii) a private placement in which no one party acquires the right
to purchase in excess of 2% of the voting shares of CBI, (iii) an assignment  to
a  single  party  for  the  purpose  of  conducting  a  widely  dispersed public
distribution on U. S. Bancorp's behalf, or (iv) any other manner approved by the
Federal Reserve Board. (Section 13)
 
    Certain rights and  obligations of U.  S. Bancorp and  CBI under the  Option
Agreement  are subject to receipt of required regulatory approvals. The approval
of the Federal Reserve Board is required for the acquisition by U. S. Bancorp of
more than 5  percent of  the outstanding  shares of  CBI Common  Stock. See  "--
Regulatory Approvals Required for the Merger."
 
THE CBI RIGHTS AGREEMENT
 
    On  June 30,  1995, the CBI  Board of  Directors declared a  dividend of one
preferred share purchase  right (a "Right")  for each outstanding  share of  CBI
Common  Stock payable to stockholders  of record on that  date. Each Right, when
exercisable, will  entitle  the  registered  holder to  purchase  from  CBI  one
one-hundredth  of a share of Series  A Junior Participating Preferred Stock (the
"Preferred Shares") of CBI at a purchase price of $75 per one one-hundredth of a
Preferred Share, subject to adjustment. The
 
                                       37
<PAGE>
Rights are not currently exercisable. A  description of the terms of the  Rights
is set forth in the CBI Rights Agreement, a copy of which was filed as Exhibit 4
to CBI's Registration Statement on Form 8-A, filed with the SEC on July 5, 1995,
and  incorporated by reference to CBI's Annual  Report on Form 10-K for the year
ended December 31, 1995. See "Information Incorporated By Reference."
 
    Immediately prior to the  execution of the Merger  Agreement, the CBI  Board
amended the CBI Rights Agreement to permit the execution of the Merger Agreement
and  the Option Agreement and the  consummation of the Merger without triggering
the exercisability of the Rights.
 
EMPLOYEE BENEFITS AND PLANS
 
    The Merger  Agreement  requires  U.  S. Bancorp  to  honor  all  employment,
severance  and other compensation  agreements disclosed to U.  S. Bancorp in the
Merger Agreement in accordance  with their terms,  including any provisions  for
termination.  See  "Interests  of Certain  Persons  in the  Merger."  The Merger
Agreement also provides that, within a reasonable time after the Effective Time,
U. S.  Bancorp  shall provide  to  U. S.  Bancorp  employees who  were  formerly
employees  of CBI employee benefits substantially  the same as those provided to
similarly situated employees of U. S. Bancorp. Also, employees of U. S.  Bancorp
who  were formerly employees of  CBI shall receive full  credit for all purposes
under U. S. Bancorp's  employee benefit plans, except  the accrual of  benefits,
for  their  length of  service  with CBI  or any  of  its subsidiaries  (and any
predecessors thereto) to the extent recognized  under the plans of either U.  S.
Bancorp or CBI.
 
    Pursuant  to the  Merger Agreement, provision  has been made  such that each
stock option to acquire CBI Common Stock granted under the CBI Stock Plans which
is outstanding and unexercised immediately prior  to the Effective Time will  be
converted  at  the Effective  Time  into, and  will  become, a  stock  option to
purchase U. S. Bancorp  Common Stock, rather  than CBI Common  Stock, in a  form
substantially  as provided  pursuant to the  U. S. Bancorp  1993 Stock Incentive
Plan. The number of shares of U.  S. Bancorp Common Stock subject to such  stock
options  shall be  equal to the  product of the  number of shares  of CBI Common
Stock subject to each CBI stock option times the Exchange Ratio, rounded down to
the next whole share, and the exercise  price per share of U. S. Bancorp  Common
Stock  subject to such options will be equal  to the exercise price per share of
CBI Common Stock  under each  CBI stock option  divided by  the Exchange  Ratio,
rounded  up to the  next cent. CBI stock  options will remain  in full force and
effect  with  the  same   remaining  term  and   without  any  acceleration   of
exercisability  or conferring any right to receive cash by reason of the Merger,
except as provided by their terms as in  effect prior to the date of the  Merger
Agreement.
 
NASDAQ NATIONAL MARKET SYSTEM TRADING
 
    It is a condition to the consummation of the Merger that the shares of U. S.
Bancorp  Common Stock issuable pursuant to  the Merger be authorized for listing
on the NASDAQ National Market System.
 
EXPENSES
 
    The Merger Agreement provides that U. S.  Bancorp and CBI will each pay  its
own  expenses in  connection with the  Merger and  the transactions contemplated
thereby.
 
DIVIDENDS
 
    The Merger Agreement provides that U. S. Bancorp and CBI will coordinate the
declaration and payment of  dividends in respect of  U. S. Bancorp Common  Stock
and  CBI Common Stock so that holders thereof will not receive two dividends for
a single quarter  or fail  to receive one  dividend which  they would  otherwise
receive  in the absence of the Merger.  Dividends on the U. S. Bancorp Preferred
Stock will be payable in accordance with its terms.
 
RESALES OF U. S. BANCORP COMMON STOCK RECEIVED IN THE MERGER
 
    The U. S. Bancorp Common Stock issued pursuant to the Merger will be  freely
transferable  under  the Securities  Act, except  for shares  issued to  any CBI
stockholder who may be deemed to be  an affiliate of U. S. Bancorp for  purposes
of    Rule   144   promulgated   under   the   Securities   Act   ("Rule   144")
 
                                       38
<PAGE>
or an affiliate of CBI for purposes of Rule 145 promulgated under the Securities
Act  ("Rule  145")  (each  an  "Affiliate").  Affiliates  will  include  persons
(generally  executive  officers,  directors and  ten  percent  stockholders) who
control, are controlled by, or are under  common control with (i) U. S.  Bancorp
or  CBI at the time of the Special Meeting or (ii) U. S. Bancorp at or after the
Effective Time. Each of CBI and U. S. Bancorp has agreed in the Merger Agreement
to use its best efforts to cause each  person who is an Affiliate of such  party
to  deliver to the other party a written agreement intended to ensure compliance
with the Securities Act.
 
    Rules 144 and  145 will  restrict the  sale of  U. S.  Bancorp Common  Stock
received  in the Merger  by Affiliates and  certain of their  family members and
related interests.  Generally  speaking,  during the  two  years  following  the
Effective  Time, those  persons who  are Affiliates  of CBI  at the  time of the
Special Meeting,  provided  they are  not  Affiliates of  U.  S. Bancorp  at  or
following the Effective Time, may publicly resell any U. S. Bancorp Common Stock
received  by them  in the  Merger, subject to  certain limitations  as to, among
other things, the  amount of  U. S.  Bancorp Common Stock  sold by  them in  any
three-month period and as to the manner of sale. After the two-year period, such
Affiliates may resell their shares without such restrictions so long as there is
adequate current public information with respect to U. S. Bancorp as required by
Rule  144. Persons who become Affiliates of U.  S. Bancorp prior to, at or after
the Effective Time may publicly resell  the U. S. Bancorp Common Stock  received
by  them in  the Merger  subject to similar  limitations and  subject to certain
filing requirements specified in Rule 144.
 
    The ability of  Affiliates to resell  shares of U.  S. Bancorp Common  Stock
received in the Merger under Rule 144 or 145 as summarized herein generally will
be  subject  to U.  S.  Bancorp's having  satisfied  its Exchange  Act reporting
requirements for specified periods  prior to the time  of sale. Affiliates  also
would  be permitted to resell U. S.  Bancorp 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.
This Proxy Statement/Prospectus  does not  cover any  resales of  U. S.  Bancorp
Common  Stock received by  persons who may be  deemed to be  Affiliates of U. S.
Bancorp or CBI in the Merger.
 
U. S. BANCORP DIVIDEND REINVESTMENT AND STOCK PURCHASE PLAN
 
    U. S.  Bancorp has  a Dividend  Reinvestment and  Stock Purchase  Plan  (the
"Plan").  The Plan provides,  in substance, for those  shareholders who elect to
participate, that dividends  on U.  S. Bancorp  Common Stock  and optional  cash
payments  of not  less than  $25 per  payment, up  to a  maximum of  $75,000 per
calendar year, will be  invested in shares  of U. S.  Bancorp Common Stock.  The
purchase  price for U. S.  Bancorp Common Stock purchased  under the Plan is 100
percent of the market price. U. S.  Bancorp may amend, suspend or terminate  the
Plan  at any time. After the Effective  Time, stockholders of CBI who receive U.
S. Bancorp Common Stock in the Merger will have the right to participate in  the
Plan.
 
ABSENCE OF APPRAISAL RIGHTS
 
    Because  the  CBI Common  Stock is  designated as  a National  Market System
security on the NASDAQ interdealer quotation system, holders of CBI Common Stock
do not have any appraisal rights under the DGCL in connection with the Merger.
 
             BOARD OF DIRECTORS, MANAGEMENT AND BUSINESS OPERATIONS
                     OF U. S. BANCORP FOLLOWING THE MERGER
 
BOARD OF DIRECTORS AND MANAGEMENT
 
    As the surviving corporation in the  Merger, U. S. Bancorp will continue  to
be  managed  by its  Board  of Directors  and  executive officers  following the
Effective Time. The Merger Agreement provides that the board of directors of the
surviving corporation will consist of the members of the U. S. Bancorp Board  of
Directors  immediately prior to  the Merger. Directors  of U. S.  Bancorp at the
Effective Time will serve until the U. S. Bancorp annual shareholders meeting in
1997 and until their  successors are duly elected  and qualified. U. S.  Bancorp
has  no present  intention to  appoint any  of the  CBI directors  to the  U. S.
Bancorp Board of Directors.
 
                                       39
<PAGE>
BUSINESS OPERATIONS
 
    Following  the Merger,  U. S. Bancorp  intends to combine  the operations of
and, subject to required regulatory approvals, to merge the subsidiary banks  of
CBI  into one or more U. S. Bancorp banking subsidiaries. As of the date of this
Proxy Statement/Prospectus, no final determination with respect to such  matters
had  been made. As there is no overlap of branches between CBI and U. S. Bank of
California, U.  S.  Bancorp  does not  presently  anticipate  consolidating  any
branches.  U. S. Bancorp has  estimated that cost savings  may be realized in an
amount approximating 15  to 20  percent of CBI's  noninterest expenses  annually
through the consolidation of administrative and back office operations. Enhanced
revenues  are  also expected  to  be realized  through  the marketing  of  U. S.
Bancorp's broader  array of  products and  services not  presently available  to
CBI's  customers,  such  as  corporate  and  private  banking,  cash  management
services, trust services, insurance products and debit cards, as well as through
bringing in-house certain  products and  services currently  outsourced by  CBI.
Conversion  of CBI's bank operations is currently expected to occur in the first
quarter of 1997.
 
                   INTERESTS OF CERTAIN PERSONS IN THE MERGER
 
    Certain members  of the  CBI Board  and  management may  be deemed  to  have
certain  interests  in  the  Merger  that are  in  addition  to  their interests
generally as CBI stockholders.  The CBI Board was  aware of these interests  and
considered  them, among other matters, in approving the Merger Agreement and the
transactions contemplated thereby.
 
    APPROVAL AND ADOPTION OF THE MERGER  AGREEMENT BY THE CBI STOCKHOLDERS  WILL
ALSO  CONSTITUTE  APPROVAL  OR  RATIFICATION OF  THE  FOLLOWING  BENEFITS  TO BE
RECEIVED BY CBI DIRECTORS, EXECUTIVE OFFICERS AND OTHER EMPLOYEES.
 
NEW EMPLOYMENT AGREEMENT
 
    Concurrently with the execution of the Agreement and Plan of Merger dated as
of February 11, 1996, CBI entered into an employment agreement (the  "Employment
Agreement") by and among CBI, U. S. Bancorp and Joseph P. Colmery, President and
Chief  Executive Officer of CBI. Certain  provisions of the Employment Agreement
became effective as of the execution  of such Employment Agreement, and  certain
other  provisions become effective as of the Effective Time. The provisions that
became effective upon  execution of  the Employment Agreement  provide that  CBI
will not terminate Mr. Colmery's employment without cause, that Mr. Colmery will
not  voluntarily terminate  his employment with  CBI, and that  Mr. Colmery will
continue in his current position until the Effective Time.
 
    From and after the  Effective Time of the  Merger, the Employment  Agreement
supersedes  Mr. Colmery's existing agreement  with CBI. The Employment Agreement
provides that Mr. Colmery  will serve as  an Executive Vice  President of U.  S.
Bancorp or of the U. S. Bancorp subsidiary responsible for the operations of CBI
purchased  by U. S. Bancorp  in the Merger. During  the period commencing at the
Effective Time  and ending  on  March 1,  1998  (the "Employment  Period"),  the
Employment  Agreement provides  for a  minimum annual  base salary  of $200,000;
eligibility for an  annual bonus, beginning  in 1997, pursuant  to an  incentive
compensation  plan to be established by  U. S. Bancorp; participation in benefit
plans applicable to  peer executives;  and reimbursement  of certain  reasonable
expenses  and receipt of  certain fringe benefits, office  and support staff and
vacation applicable to peer executives of U. S. Bancorp.
 
    If, during the Employment Period, U. S. Bancorp terminates Mr. Colmery other
than for cause (as defined therein) or disability or Mr. Colmery terminates  his
employment  for good  reason (as  defined therein),  Mr. Colmery  is entitled to
receive a lump sum cash  payment consisting of the  sum of Mr. Colmery's  annual
base salary and, under certain circumstances, a pro rata bonus, each through the
date  of termination and to the extent not already paid, plus an amount equal to
three times the  sum of Mr.  Colmery's annual  base salary, the  average of  the
annual  bonuses paid to Mr. Colmery by CBI and U. S. Bancorp with respect to the
three prior calendar years, and the contributions  made by U. S. Bancorp or  CBI
in  the 12 months preceding termination  to profit sharing, 401(k) or retirement
 
                                       40
<PAGE>
plans. In addition,  for three  years after the  date of  such termination,  Mr.
Colmery  and  his family  generally  would be  entitled  to the  continuation of
specified employee  welfare  benefits.  During  the  period  between  the  first
anniversary  of  the  Effective  Time  and March  1,  1998,  termination  of Mr.
Colmery's employment for any reason other than cause, death or disability  shall
be  deemed to be  a termination for  good reason for  purposes of the Employment
Agreement.
 
EXISTING CBI EMPLOYMENT AGREEMENTS
 
    During the period  from July 1993  through December 1995,  CBI entered  into
agreements  (the "Existing  Employment Agreements")  with Chairman  of the Board
Donald J. Gehb and certain key  employees, including John W. Larsen, Vincent  M.
Leveroni,  Ted  Teruo  Kitada,  James  A.  Mayer  and  Diane  M.  Mietzel. These
agreements provide for  severance compensation  to such employees  in the  event
their  employment with CBI or a subsidiary  of CBI is terminated subsequent to a
change in control (as defined therein) of CBI under the circumstances set  forth
in  the  agreements. Consummation  of  the Merger  will  constitute a  change in
control for purposes of the agreements.
 
    Each  such  employment  agreement  provides  that  if  a  person,  firm   or
corporation  acquiring control of CBI seeks to  vary the terms of the employment
agreement, transfers the executive to an area outside the county or counties  in
which  he  or she  currently  works, unduly  harasses him  or  her, or  seeks to
terminate the benefits and privileges provided for  him or her under his or  her
employment  agreement, then the executive shall be entitled to receive an amount
equal to the compensation required by the terms and conditions of the employment
agreement, but in no event less than his or her monthly compensation,  including
bonuses  and contributions to certain benefit and pension plans, for a period of
36 months for Mr. Gehb, 24 months for Messrs. Larsen and Leveroni, and 12 months
for Messrs. Kitada and  Mayer and Ms.  Mietzel, from the  effective date of  the
acquisition  of CBI.  Mr. Gehb  would also  be entitled  to the  continuation of
certain life and health insurance benefits for a period of three years following
the date of the change in control.
 
DIRECTOR RETIREMENT AGREEMENTS
 
    In June 1991, CBI entered into  a Directors' Retirement Agreement with  each
of  its retired directors and  directors who then had  vested benefits under the
Directors' Retirement Plan, which was terminated  at that time. The persons  who
are parties to such a Directors' Retirement Agreement and who have been officers
or  directors of CBI at  any time since the beginning  of CBI's 1995 fiscal year
are current directors Ralph  N. Mendelson, A. Steve  Simi and James L.  McKenna.
The  agreement  provides  that,  in  the  event  CBI  enters  into,  among other
transactions described therein, an agreement providing for a merger in which CBI
will not be the surviving corporation, CBI must give each of the above directors
notice of  such event  and each  such director  may elect  to require  that  CBI
purchase  at its own  expense and deliver  to such director  (or such director's
designee) an  annuity contract  providing for  payment when  due of  all  future
benefits  owed to such director. The signing of the Agreement and Plan of Merger
dated as  of  February  11, 1996,  constituted  the  entering into  of  such  an
agreement.
 
CBI STOCK OPTIONS
 
    Holders  of the options to  purchase CBI Common Stock  granted under the CBI
Stock Plans have the right  to exercise such options, notwithstanding  otherwise
applicable  vesting  requirements, (i)  immediately  prior to  a  dissolution or
liquidation of CBI or a  merger or consolidation, such  as the Merger, in  which
CBI  will not be the surviving corporation,  or (ii) upon the commencement of an
offer to all CBI stockholders to purchase any or all shares of CBI Common Stock.
Accordingly, the holders of  such options will have  the right to exercise  them
effective immediately prior to the Effective Time.
 
    Pursuant  to the  Merger Agreement, provision  has been made  such that each
stock option  granted  under  the  CBI Stock  Plans  which  is  outstanding  and
unexercised  immediately prior  to the Effective  Time will be  converted at the
Effective Time into, and will become, a  stock option to purchase U. S.  Bancorp
Common  Stock in accordance with the Exchange  Ratio and in a form substantially
as provided in the U. S. Bancorp  1993 Stock Incentive Plan. See "The Merger  --
Employee Benefits and Plans."
 
                                       41
<PAGE>
INDEMNIFICATION OF CBI OFFICERS AND DIRECTORS
 
    The Merger Agreement provides that, in the event of any threatened or actual
claim  or proceeding in which any person who is or has been a director, officer,
or employee  of  CBI,  its  subsidiaries, or  any  of  their  predecessors  (the
"Indemnified  Parties") is, or is threatened to  be, made a party based in whole
or in part on, or pertaining to (i) the fact that such person was a director  or
officer  of CBI,  its subsidiaries,  or any  of their  predecessors or  (ii) the
Merger  Agreement,  the  Option  Agreement,  or  the  transactions  contemplated
thereby,  U. S. Bancorp will, subject to  the conditions set forth in the Merger
Agreement, indemnify such person to the fullest extent permitted by law  against
any  liability  or  expense  incurred  in  connection  with  any  such  claim or
proceeding. The Merger  Agreement provides  that U. S.  Bancorp's obligation  to
indemnify  any  Indemnified  Party  will  continue for  a  period  of  six years
following the Effective Time provided that rights to indemnification in  respect
of  any claim  asserted or  made within  such period  will continue  until final
disposition of such  claim. The  Merger Agreement  further provides  that U.  S.
Bancorp  will, subject to the conditions set  forth in the Merger Agreement, use
its best efforts to cause the persons  serving as officers and directors of  CBI
immediately  prior  to  the Merger  to  be covered  for  a period  of  six years
following the Effective Time by U. S. Bancorp's directors and officers liability
insurance policy (or any  equivalent substitute therefor),  provided that U.  S.
Bancorp  will not  be required to  expend more  than 200 percent  of the current
amount expended by CBI to procure such insurance.
 
          UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION
 
    The following unaudited  pro forma combined  condensed financial  statements
were  prepared in connection with the Merger (in which each outstanding share of
CBI Common Stock  will be  exchanged for  0.95 shares  of U.  S. Bancorp  Common
Stock)  and  give  effect  to  the  purchase  accounting  adjustments  and other
assumptions described  in  the  accompanying  notes.  The  unaudited  pro  forma
combined  condensed balance sheet is based  upon the consolidated balance sheets
of U. S. Bancorp and CBI as if  the Merger had become effective on December  31,
1995. The unaudited pro forma combined condensed statement of income is based on
the  consolidated statements of income of U. S. Bancorp and CBI as if the Merger
had become effective on January 1, 1995.
 
    The adjustments  included  in the  unaudited  pro forma  combined  condensed
financial  statements are subject to  updating as additional information becomes
available. An  increase  in  the  unallocated  portion  of  the  purchase  price
remaining  after  fair  value  adjustments  would  result  in  a  greater  final
allocation to goodwill, which would have a corresponding effect on  amortization
expense  and would reduce tangible common  equity. A decrease in the unallocated
portion of the purchase price remaining after fair value adjustments would  have
the  opposite effects.  Accordingly, the final  pro forma  combined amounts will
differ from  those set  forth  in the  unaudited  pro forma  combined  condensed
financial statements.
 
    The  information  shown  below  should  be  read  in  conjunction  with  the
consolidated historical financial statements of U. S. Bancorp and CBI, which are
incorporated by reference in this Proxy Statement/Prospectus, and the  unaudited
pro forma combined per share financial data which appear elsewhere in this Proxy
Statement/Prospectus.   See   "Information   Incorporated   by   Reference"  and
"Comparison of Certain Unaudited Per Common Share Data." The pro forma data  are
presented  for comparative purposes  only and are  not necessarily indicative of
the combined financial position or results of operations in the future. The  pro
forma  data  are  also  not necessarily  indicative  of  the  combined financial
position or results of operations which would have been realized had the  Merger
been  consummated during the  period or as of  the date for  which the pro forma
financial statements are presented.
 
                                       42
<PAGE>
                         U. S. BANCORP AND SUBSIDIARIES
              UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                             DECEMBER 31, 1995 (A)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                            HISTORICAL
                                                    --------------------------    PRO FORMA      PRO FORMA
                                                    U. S. BANCORP      CBI       ADJUSTMENTS     COMBINED
                                                    -------------   ----------  -------------   -----------
<S>                                                 <C>             <C>         <C>             <C>
ASSETS
  Cash and due from banks.........................   $  2,417,503   $   81,606  $               $ 2,499,109
  Federal funds sold, security resell agreements,
   and other short-term investments...............        515,225       76,175                      591,400
  Trading account securities......................        279,656           --                      279,656
  Loans held for sale.............................        159,986        7,468                      167,454
  Securities available for sale, at fair
   value..........................................      3,276,723       73,876                    3,350,599
  Securities held to maturity, at amortized
   cost...........................................        865,126      264,552      1,023(C)      1,130,701
  Loans and lease financing, net of unearned
   income.........................................     22,785,275    1,023,312                   23,808,587
  Allowance for credit losses.....................       (434,508)     (14,836)                    (449,344)
                                                    -------------   ----------  -------------   -----------
  Net loans and lease financing...................     22,350,767    1,008,476         --        23,359,243
  Goodwill (U. S. Bancorp only)...................        153,377           --    182,020(C)        335,397
  Other assets (including CBI goodwill)...........      1,775,920       58,305     34,213(D)      1,868,438
                                                    -------------   ----------  -------------   -----------
                                                     $ 31,794,283   $1,570,458  $ 217,256       $33,581,997
                                                    -------------   ----------  -------------   -----------
                                                    -------------   ----------  -------------   -----------
LIABILITIES
  Noninterest-bearing deposits....................   $  6,009,728   $  291,435  $               $ 6,301,163
  Interest-bearing deposits.......................     17,254,901    1,134,460                   18,389,361
                                                    -------------   ----------  -------------   -----------
    Total deposits................................     23,264,629    1,425,895                   24,690,524
  Federal funds purchased and security repurchase
   agreements.....................................      2,731,116           --                    2,731,116
  Short-term borrowings...........................        868,230           90     80,000(E)        948,320
  Long-term debt..................................      1,377,021           --    244,898(E)      1,621,919
  Other liabilities...............................        936,234       13,712     23,119(D)        973,065
                                                    -------------   ----------  -------------   -----------
    Total liabilities.............................     29,177,230    1,439,697    348,017        30,964,944
                                                    -------------   ----------  -------------   -----------
SHAREHOLDERS' EQUITY
  Preferred stock.................................        150,000           --                      150,000
  Common shareholders' equity.....................      2,467,053      130,761   (130,761)(C)     2,467,053
                                                    -------------   ----------  -------------   -----------
    Total shareholders' equity....................      2,617,053      130,761   (130,761)        2,617,053
                                                    -------------   ----------  -------------   -----------
                                                     $ 31,794,283   $1,570,458  $ 217,256       $33,581,997
                                                    -------------   ----------  -------------   -----------
                                                    -------------   ----------  -------------   -----------
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       43
<PAGE>
                         U. S. BANCORP AND SUBSIDIARIES
           UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                    FOR THE YEAR ENDED DECEMBER 31, 1995 (A)
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                            HISTORICAL
                                                    --------------------------      PRO FORMA        PRO FORMA
                                                    U. S. BANCORP      CBI         ADJUSTMENTS       COMBINED
                                                    -------------   ----------  -----------------   -----------
<S>                                                 <C>             <C>         <C>                 <C>
INTEREST INCOME
Loans, lease financing and loans held for sale,
 including fees...................................   $  2,116,907   $   95,275                      $ 2,212,182
Securities........................................        249,914       17,326  $    (205)(F)           267,035
Trading account securities........................         10,469           --                           10,469
Interest-bearing deposits and short-term
 investments......................................         15,219        4,222                           19,441
                                                    -------------   ----------   --------           -----------
    Total interest income.........................      2,392,509      116,823       (205)            2,509,127
                                                    -------------   ----------   --------           -----------
INTEREST EXPENSE
Deposits..........................................        710,044       42,237                          752,281
Short-term borrowings.............................        199,712          729      4,600 (E,F)          205,041
Long-term debt....................................         83,347           --     15,400 (E,F)           98,747
                                                    -------------   ----------   --------           -----------
    Total interest expense........................        993,103       42,966     20,000             1,056,069
                                                    -------------   ----------   --------           -----------
NET INTEREST INCOME...............................      1,399,406       73,857    (20,205)            1,453,058
Provision for credit losses.......................        124,093        1,485                          125,578
                                                    -------------   ----------   --------           -----------
Net interest income after provision for credit
 losses...........................................      1,275,313       72,372    (20,205)            1,327,480
NONINTEREST REVENUES
Service charges on deposit accounts...............        189,541        5,625                          195,166
Bank card revenue, net............................         73,393           --                           73,393
Trust and investment management...................         65,826           --                           65,826
Exchange fees.....................................         42,595           --                           42,595
Mortgage banking income, net......................         16,927        1,204                           18,131
Other operating revenue...........................        130,282        2,650                          132,932
Equity investment income..........................          3,177           --                            3,177
Securities gains, net.............................          2,999           --                            2,999
                                                    -------------   ----------   --------           -----------
    Total noninterest revenues....................        524,740        9,479                          534,219
                                                    -------------   ----------   --------           -----------
NONINTEREST EXPENSE
Employee compensation and benefits................        602,134       29,470                          631,604
Net occupancy expense.............................         85,430        4,635        563(F)             90,628
Equipment rentals, depreciation and maintenance...        127,354        3,779       (280)(F)           130,853
Regulatory agency fees............................         35,525        2,102                           37,627
Merger and integration costs......................         98,940           --                           98,940
Other operating expense...........................        341,431       12,440     15,244(F)            369,115
                                                    -------------   ----------   --------           -----------
    Total noninterest expense.....................      1,290,814       52,426     15,527             1,358,767
                                                    -------------   ----------   --------           -----------
Income before income taxes........................        509,239       29,425    (35,732)              502,932
Provision for income taxes........................        180,268       11,390    (10,652)(F)           181,006
                                                    -------------   ----------   --------           -----------
Net income........................................   $    328,971   $   18,035  $ (25,080)          $   321,926
                                                    -------------   ----------   --------           -----------
                                                    -------------   ----------   --------           -----------
Net income available to common shareholders:
  U. S. Bancorp...................................   $    316,784
  CBI.............................................                  $   18,035
  Pro Forma.......................................                              $ (25,080)          $   309,739
Weighted average common shares outstanding:
  U. S. Bancorp...................................        151,554
  CBI.............................................                      10,014
  Pro Forma.......................................                                (10,014)              151,554
Earnings per common share:
  U. S. Bancorp...................................   $       2.09
  CBI.............................................                  $     1.80
  Pro Forma.......................................                                                  $      2.04
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       44
<PAGE>
                         U. S. BANCORP AND SUBSIDIARIES
                          NOTES TO UNAUDITED PRO FORMA
                    COMBINED CONDENSED FINANCIAL STATEMENTS
 
(A) BASIS OF PRESENTATION
 
UNAUDITED PRO FORMA COMBINATION
 
    The unaudited  pro  forma  combined condensed  balance  sheet  combines  the
historical consolidated balance sheets of U. S. Bancorp and CBI as if the Merger
had  become effective  on December  31, 1995.  The unaudited  pro forma combined
condensed statement of income for the year ended December 31, 1995 combines  the
historical  consolidated statements of income of U. S. Bancorp and CBI as if the
Merger had  become  effective  on  January  1,  1995.  Certain  amounts  in  the
historical  financial statements of CBI have  been reclassified in the unaudited
pro forma combined condensed financial statements to conform to U. S.  Bancorp's
historical financial statements.
 
COST SAVINGS
 
    The  positive  effects of  potential cost  savings and  revenue enhancements
which may be achieved subsequent  to the Merger have  not been reflected in  the
unaudited pro forma combined condensed financial statements.
 
METHOD OF ACCOUNTING
 
    The  Merger is accounted for as a purchase. Under this method of accounting,
assets and liabilities  of CBI are  adjusted to their  estimated fair value  and
combined  with the recorded book  values of the assets  and liabilities of U. S.
Bancorp. Applicable income  tax effects of  such adjustments are  included as  a
component  of U.  S. Bancorp's net  deferred tax liability  with a corresponding
offset to goodwill.
 
    For purposes  of  the  unaudited  pro  forma  combined  condensed  financial
statements,  estimates of  the fair  value of CBI  assets and  liabilities as of
December 31, 1995 have been combined with the recorded values of the assets  and
liabilities  of U. S. Bancorp.  Fair value adjustments are  subject to update as
additional information becomes available.
 
STOCK REPURCHASE
 
    U. S. Bancorp will issue 0.95 shares of U. S. Bancorp Common Stock for  each
outstanding  share of CBI Common Stock  other than fractional shares and certain
shares held by CBI or U. S. Bancorp.  It is anticipated that a number of  shares
approximately  equal to the number of shares to  be issued in the Merger will be
purchased on the  open market under  U. S. Bancorp's  share repurchase  program,
subject to market conditions or other factors.
 
COMMON STOCK EQUIVALENTS
 
    The  impact of common  stock equivalents, such as  common stock options, and
other potentially dilutive securities is not material; accordingly, they are not
included in the per share calculations.
 
(B) PURCHASE PRICE
    The purchase  price is  based on  exchanging 0.95  shares of  U. S.  Bancorp
Common  Stock for  each outstanding  share of  CBI Common  Stock. The  per share
market price  of  U.  S.  Bancorp  Common  Stock  used  in  the  purchase  price
calculation  is $32.76, based on the market  price of U. S. Bancorp Common Stock
over a  reasonable  period  of  time before  and  after  the  companies  reached
agreement  on the common stock exchange ratio. The fair value of outstanding CBI
stock options (based on  the difference between the  average exercise price  and
the purchase price per share) is also included in the purchase price.
 
                                       45
<PAGE>
                         U. S. BANCORP AND SUBSIDIARIES
                          NOTES TO UNAUDITED PRO FORMA
             COMBINED CONDENSED FINANCIAL STATEMENTS -- (CONTINUED)
 
(B) PURCHASE PRICE (CONTINUED)
    The  total estimated  purchase price  (in thousands  of dollars,  except per
share amounts) is calculated as follows:
 
<TABLE>
<S>                                                            <C>         <C>
CBI Common Stock outstanding on December 31, 1995............  10,061,000
  Exchange Ratio.............................................        0.95
                                                               ----------
U. S. Bancorp Common Stock to be issued......................   9,557,950
Market price per share of U. S. Bancorp Common Stock.........      $32.76
                                                               ----------
Total market value of U. S. Bancorp Common Stock to be
 issued......................................................              $ 313,119
Fair value of CBI stock options outstanding on December 31,
 1995 (643,646 shares at $18.30 per share)...................                 11,779
                                                                           ---------
Total purchase price.........................................              $ 324,898
                                                                           ---------
                                                                           ---------
</TABLE>
 
(C) ALLOCATION OF PURCHASE PRICE AND GOODWILL CALCULATION
    Certain matters are still pending that  will have an effect on the  ultimate
allocation  of the purchase  price. Accordingly, the  allocation of the purchase
price as of  the Merger  date has  not been finalized  and the  portions of  the
purchase  price allocated to fair  value adjustments, goodwill, and identifiable
intangibles (discussed below) are subject to change.
 
    Subject to the foregoing, the purchase price has been allocated and goodwill
has been calculated as described in the table below (in thousands):
 
<TABLE>
<S>                                                               <C>        <C>
Total purchase price............................................             $ 324,898
Shareholders' equity of CBI at December 31, 1995................               130,761
                                                                             ---------
Excess of purchase price over CBI shareholders' equity..........               194,137
Adjustments to excess of purchase price over shareholders'
 equity:
  Fair value of securities held to maturity.....................                (1,023)
  Fair value of premises, net...................................                (8,427)
  Core deposit intangible.......................................               (32,760)
  Acquisition costs:
    Severance pay...............................................      5,089
    Direct acquisition costs (investment banking, legal,
     accounting)................................................      3,800
    Other.......................................................      3,625
                                                                  ---------
      Total acquisition costs...................................                12,514
  Deferred taxes related to purchase accounting adjustments.....                14,016
Elimination of CBI existing identifiable intangibles, net of
 related deferred tax amounts:
  Goodwill......................................................                 6,074
  Core deposit intangible.......................................                   900
  Negative goodwill.............................................                (3,411)
                                                                             ---------
Total goodwill due to Merger....................................             $ 182,020
                                                                             ---------
                                                                             ---------
</TABLE>
 
                                       46
<PAGE>
                         U. S. BANCORP AND SUBSIDIARIES
                          NOTES TO UNAUDITED PRO FORMA
             COMBINED CONDENSED FINANCIAL STATEMENTS -- (CONTINUED)
 
(D) ADJUSTMENTS TO OTHER ASSETS AND OTHER LIABILITIES
 
<TABLE>
<CAPTION>
    Increase (decrease) in other assets are as follows (in thousands):
<S>                                                                                        <C>
 Core deposit intangible due to Merger...................................................   $    32,760
  Premises, net..........................................................................         8,427
  CBI existing goodwill..................................................................        (6,074)
  CBI existing core deposit intangible...................................................          (900)
                                                                                           -------------
  Total adjustment to other assets.......................................................   $    34,213
                                                                                           -------------
                                                                                           -------------
 
Increase (decrease) in other liabilities are as follows:
  Deferred tax liability related to purchase accounting adjustments......................   $    14,016
  Acquisition costs......................................................................        12,514
  Elimination of CBI negative goodwill...................................................        (3,411)
                                                                                           -------------
  Total adjustment to other liabilities..................................................   $    23,119
                                                                                           -------------
                                                                                           -------------
</TABLE>
 
(E) FINANCING OF STOCK REPURCHASE
    The financing of  the cost of  shares of U.  S. Bancorp Common  Stock to  be
repurchased  in the open market in connection with the issuance of shares in the
Merger will  be  accomplished through  a  variety of  sources,  including  asset
maturities  and  sales,  increases  in debt  outstanding  and  other  sources of
liquidity. The actual  balance sheet  allocation will  ultimately be  determined
based  on market conditions. For purposes of  this pro forma analysis, the stock
repurchase  is  assumed  to  be  financed  by  issuance  of  subordinated  debt,
medium-term notes, and short-term borrowings. The total pro forma annual cost of
such financing is estimated to be $20 million.
 
                                       47
<PAGE>
                         U. S. BANCORP AND SUBSIDIARIES
                          NOTES TO UNAUDITED PRO FORMA
             COMBINED CONDENSED FINANCIAL STATEMENTS -- (CONTINUED)
 
(F) PURCHASE ACCOUNTING INCOME STATEMENT ADJUSTMENTS
    Goodwill  due to the  Merger is amortized  on a straight-line  basis over 20
years. Core  deposit intangibles  are  amortized over  the estimated  period  of
benefit (eight years) on an accelerated basis.
 
<TABLE>
<CAPTION>
                                                                                         INCOME STATEMENT
                                                                                            (INCREASE)
                                                                                             DECREASE
                                                                                        ------------------
<S>                                                                          <C>        <C>
                                                                                          (IN THOUSANDS)
Amortization of securities held to maturity (mark-to-market adjustment)....                $        205
Interest expense on borrowed funds.........................................                      20,000
Depreciation adjustment for premises (mark-to-market adjustment)...........                         563
Depreciation adjustment for write-off of premises..........................                        (280)
Other operating expense
  Amortization of core deposit intangible..................................      6,143
  Amortization of goodwill.................................................      9,101
                                                                             ---------
    Total other operating expense..........................................                      15,244
                                                                                               --------
    Total income statement effect of purchase accounting adjustments before
     taxes.................................................................                $     35,732
                                                                                               --------
                                                                                               --------
Total income statement adjustment..........................................                $     35,732
Amortization of goodwill...................................................                      (9,101)
                                                                                               --------
Net expenses deductible for financial reporting purposes...................                      26,631
Tax rate...................................................................                         40%
                                                                                               --------
Income tax effect of purchase accounting adjustments.......................                $     10,652
                                                                                               --------
                                                                                               --------
</TABLE>
 
                                       48
<PAGE>
                       COMPARISON OF SHAREHOLDERS' RIGHTS
 
    U. S. Bancorp and CBI are incorporated in Oregon and Delaware, respectively.
Stockholders  of CBI, whose rights as stockholders are currently governed by the
Delaware General Corporation Law ("Delaware law"), CBI's Restated Certificate of
Incorporation (the "CBI Certificate") and CBI's bylaws (the "CBI Bylaws")  will,
upon  consummation of  the Merger,  automatically become  shareholders of  U. S.
Bancorp, and their rights  will be governed by  the Oregon Business  Corporation
Act  ("Oregon  law"), U.  S. Bancorp's  Restated  Articles of  Incorporation, as
amended (the "U. S. Bancorp  Articles") and U. S.  Bancorp's bylaws (the "U.  S.
Bancorp  Bylaws").  The  following  is  a  discussion  of  only  those  material
similarities and differences between  the rights of  U. S. Bancorp  shareholders
under  the U. S. Bancorp Articles and Bylaws  and Oregon law on the one hand and
CBI stockholders under the  CBI Certificate and Bylaws  and Delaware law on  the
other hand. This summary does not purport to be a complete discussion of, and is
qualified  in its  entirety by  reference to,  the governing  law and  the U. S.
Bancorp Articles, the  CBI Certificate, the  U. S. Bancorp  Bylaws, and the  CBI
Bylaws.
 
CORPORATE CHARTER AND BYLAW AMENDMENTS
 
    Both  Oregon  and  Delaware  law  generally provide  that  in  order  for an
amendment to a corporate charter  to be adopted, the  board of directors of  the
corporation  must adopt  a resolution setting  forth the  proposed amendment and
directing that it be  submitted to a  vote at a  meeting of shareholders.  Under
Oregon   law,  in  order  for  an  amendment  to  a  corporation's  articles  of
incorporation to be adopted, the amendment must be approved by a majority of the
votes entitled to be cast on the amendment  by any voting group as to which  the
amendment  would  create  dissenters' rights  and  by every  other  voting group
entitled to vote on the amendment.
 
    Delaware law requires that the  amendment must receive the affirmative  vote
of  a  majority of  the  outstanding stock  entitled to  vote  thereon and  of a
majority of  the outstanding  stock of  each class  of shares  entitled to  vote
thereon as a class.
 
    Under Oregon law, a corporation's board of directors may amend or repeal the
corporation's  bylaws  unless  the corporation's  articles  of  incorporation or
Oregon  law  reserves  the  power  to  amend  the  bylaws  exclusively  to   the
shareholders in whole or in part or the shareholders, in amending or repealing a
particular bylaw, provide expressly that the board of directors may not amend or
repeal  that bylaw. The U. S. Bancorp Bylaws provide that they may be changed or
amended by a  vote of  a majority  of the  whole number  of directors  of U.  S.
Bancorp.
 
    Delaware  law provides that  the power to  amend or repeal  the bylaws or to
adopt new bylaws is vested in the stockholders of the corporation, provided that
the corporation may, in its certificate of incorporation, also confer the  power
to  adopt,  amend or  repeal bylaws  upon the  corporation's directors.  The CBI
Certificate and the CBI  Bylaws provide that the  board of directors may  adopt,
amend or repeal bylaws.
 
SPECIAL MEETINGS OF SHAREHOLDERS
 
    Oregon  law provides that a special meeting of shareholders may be called by
the board of directors or the holders of 10% or more of the votes entitled to be
cast on any issue proposed to be considered at the proposed special meeting,  or
by such persons as are specified in the articles of incorporation or bylaws. The
U. S. Bancorp Bylaws permit special meetings of shareholders to be called by the
U. S. Bancorp Board of Directors, the chief executive officer, any vice chairman
or the president.
 
    Under  Delaware law, a special meeting of  stockholders may be called by the
board of directors or such other persons as may be authorized by the certificate
of incorporation or the bylaws. The CBI Bylaws provide that special meetings may
be called  by the  president  or the  board  of directors,  or  by one  or  more
stockholders holding not less than one-fifth of the voting power of CBI.
 
CORPORATE ACTION WITHOUT A MEETING
 
    Oregon  law permits action to be taken at a shareholders meeting to be taken
without a meeting upon the written  consent of all the shareholders entitled  to
vote on the action.
 
                                       49
<PAGE>
    Delaware  law  permits  corporate  action  without  a  stockholders meeting,
without prior notice and without a vote of stockholders upon receipt of  written
consent  of  that number  of shares  that  would be  necessary to  authorize the
proposed corporate action  at a  meeting at which  all shares  entitled to  vote
thereon   were  present  and  voting,  unless  the  charter  expressly  provides
otherwise. Prompt notice of the taking of action without a meeting by less  than
unanimous  written  consent  must be  given  to  all stockholders  who  have not
consented in writing.  The CBI  Certificate permits corporate  action without  a
stockholders  meeting in  accordance with  Delaware law,  provided that  the CBI
Board shall have previously approved any such action.
 
DIVIDENDS
 
    Under Oregon law, the board of directors of a corporation may authorize  and
the  corporation may  make distributions  (including dividends)  to shareholders
only if after  giving effect to  the distribution (i)  the corporation would  be
able  to pay its  debts as they become  due in the usual  course of business and
(ii) the corporation's total assets  would at least equal  the sum of its  total
liabilities  plus,  unless the  corporation's  articles of  incorporation permit
otherwise, the  amount  that would  be  needed if  the  corporation were  to  be
dissolved  at the  time of the  distribution to satisfy  the preferential rights
upon dissolution of shareholders whose preferential rights are superior to those
receiving the distribution.
 
    Under Delaware law, the directors  of a corporation are generally  permitted
to  declare and  pay dividends  out of  surplus or  out of  net profits  for the
current and/or  preceding fiscal  year, provided  that such  dividends will  not
reduce  capital below the amount of capital represented by all classes of issued
and outstanding stock having a preference upon the distribution of assets.  Also
under Delaware law, a corporation may generally redeem or purchase shares of its
stock  if  such  redemption or  purchase  will  not impair  the  capital  of the
corporation.
 
CAPITAL STOCK
 
    The authorized capital  stock of CBI  consists of 16,000,000  shares of  CBI
Common  Stock and 2,000,000 shares of  preferred stock. The authorized preferred
stock may be issued without a vote of  the holders of CBI Common Stock. The  CBI
Board  is authorized to divide  the preferred stock into  series and, within the
limitations provided by Delaware law and the CBI Certificate, to fix the number,
designation, relative rights, preferences, and limitations of the shares of each
series so established. The authority of the CBI Board includes the right to  fix
for each series the dividend rate, redemption price, liquidation rights, sinking
fund  provisions, conversion rights,  and voting rights.  If the preferred stock
were to  be issued,  the rights  of the  holders of  CBI Common  Stock would  be
subordinated  in certain respects to the rights  of the holders of the preferred
stock. CBI has no preferred stock outstanding.
 
    The authorized capital stock of U. S. Bancorp consists of 50,000,000  shares
of  preferred stock, without par value, and  250,000,000 shares of U. S. Bancorp
Common Stock. The  Board of Directors  of U. S.  Bancorp is authorized,  without
shareholder  action, to issue preferred  stock in one or  more series and to fix
and determine all preferences, limitations, and relative rights of the shares of
preferred stock or of any series thereof  prior to the issuance of said  shares,
provided that the Board of Directors may not fix the voting rights of any shares
of preferred stock such that the holders would be entitled to more than one vote
for each share held on any matter submitted to the shareholders (except that the
Board  of Directors may  otherwise provide in  the event of  an arrearage in the
payment of dividends on any shares of preferred stock).
 
    The only  outstanding  preferred  stock  of U.  S.  Bancorp  is  the  series
designated  8 1/8% cumulative preferred stock, Series A (the "Series A Preferred
Stock") consisting of  6,000,000 shares  issued on  July 23,  1992. Unless  full
dividends on the Series A Preferred Stock (including accumulated dividends) have
been  paid  or declared  and set  aside  for payment,  no dividends  (other than
dividends or distributions paid in shares of, or options, warrants or rights  to
subscribe for or purchase shares of, U. S. Bancorp Common Stock) may be declared
or paid or set aside for payment or any other distribution declared or made upon
the  U. S. Bancorp Common Stock. No U.  S. Bancorp Common Stock may be redeemed,
purchased  or  otherwise  acquired  for  any  consideration  by  U.  S.  Bancorp
 
                                       50
<PAGE>
unless  full dividends on the  Series A Preferred Stock  shall have been paid or
declared and set aside for payment. In the event of any voluntary or involuntary
liquidation, dissolution or winding up of  U. S. Bancorp, the holders of  shares
of  Series A Preferred Stock will be entitled to receive out of the assets of U.
S. Bancorp available for distribution  to shareholders, before any  distribution
of  assets is made to  the holders of U. S.  Bancorp Common Stock, a liquidating
distribution of $25 per share plus  accrued and unpaid dividends. After  payment
of  the  full amount  of the  liquidating distribution  plus accrued  and unpaid
dividends, the holders of Series A Preferred Stock will have no right to any  of
the  remaining assets of U. S. Bancorp.  The holders of Series A Preferred Stock
are not entitled  to vote  except under  certain circumstances  or as  expressly
required  by  Oregon  law.  If  at any  time  the  equivalent  of  six quarterly
dividends, whether or not consecutive, payable  on the Series A Preferred  Stock
are unpaid or not declared and set aside for payment, the number of directors of
U.  S.  Bancorp will  be  increased by  two,  and the  holders  of the  Series A
Preferred Stock  outstanding  at the  time  will have  the  right to  elect  two
directors  to serve until all arrearages of dividends have been paid or declared
and set aside for payment. Any director so elected may be removed by, and  shall
not  be removed except  by, the vote  of the holders  of shares of  the Series A
Preferred Stock outstanding at the time. When holders of the Series A  Preferred
Stock are entitled to vote, each holder is entitled to one vote per share.
 
    The CBI Rights Agreement provides for the distribution of one Right for each
outstanding  share  of  CBI Common  Stock.  Each Right,  when  exercisable, will
entitle the  registered holder  to  purchase from  CBI  one one-hundredth  of  a
Preferred  Share at a purchase price of $75 per one one-hundredth of a Preferred
Share, subject to  adjustment. In  the event  that (i)  any person  or group  of
affiliated  or associated persons (an "Acquiring Person") becomes the beneficial
owner of 10% or  more of the  outstanding CBI Common  Stock (unless such  person
first  acquires 10% or  more of the  outstanding CBI Common  Stock by a purchase
pursuant to a tender offer for all of the CBI Common Stock which the independent
directors determine to be fair to and otherwise in the best interests of CBI and
its stockholders,  employees,  customers  and  communities  in  which  CBI  does
business), or (ii) during such time as there is an Acquiring Person, there shall
be  a reclassification of securities or  a recapitalization or reorganization of
CBI or other transaction or series  of transactions involving CBI which has  the
effect  of increasing by more than 1% the proportionate share of the outstanding
shares of any  class of  equity securities  of CBI  or any  of its  subsidiaries
beneficially  owned by the Acquiring Person, each  holder of a Right, other than
the Rights beneficially owned by the Acquiring Person (which will thereafter  be
void),  will thereafter have the  right to receive upon  exercise that number of
shares of  CBI  Common Stock  (or,  in the  event  that there  are  insufficient
authorized  shares of CBI  Common Stock, substitute  consideration such as cash,
property, or other securities  of CBI) having  a market value  of two times  the
exercise  price of the Right. In  the event that CBI is  acquired in a merger or
other business combination transaction or 50% or more of its consolidated assets
or earning power are sold, each holder of a Right will thereafter have the right
to receive, upon the exercise thereof at the then current exercise price of  the
Right,  that number of shares of common  stock of the acquiring company which at
the time of such transaction will have a market value of two times the  exercise
price of the Right. See "The Merger -- The CBI Rights Agreement."
 
    U. S. Bancorp does not have a shareholder rights plan.
 
DISSENTERS' AND APPRAISAL RIGHTS
 
    Under  Oregon law,  a shareholder  is entitled  to dissent  from, and obtain
payment of the fair value  of the shareholder's shares in  the event of, any  of
the following corporate acts:
 
        (i) consummation of a plan of merger to which the corporation is a party
    if  shareholder approval is required and the shareholder is entitled to vote
    on the merger, or if the corporation is a subsidiary that is merged with its
    parent under applicable Oregon law providing  for the merger of a 90%  owned
    subsidiary into its parent without shareholder approval;
 
        (ii)  consummation of a plan of  share exchange to which the corporation
    is a  party  as  the corporation  whose  shares  will be  acquired,  if  the
    shareholder is entitled to vote on the plan;
 
                                       51
<PAGE>
       (iii)  consummation of a sale or exchange  of all or substantially all of
    the property of the corporation other  than in the usual and regular  course
    of business if the shareholder is entitled to vote on the sale or exchange;
 
       (iv)  an amendment of  the articles of  incorporation that materially and
    adversely affects rights in respect of  a dissenter's shares because it  (A)
    alters  or  abolishes a  preemptive right  of  the holder  of the  shares to
    acquire shares or other securities or (B) reduces the number of shares owned
    by the shareholder  to a  fraction of  a share  if the  fractional share  so
    created is to be acquired for cash under Oregon law; or
 
        (v)  any corporate  action taken pursuant  to a shareholder  vote to the
    extent the articles of incorporation, bylaws or a resolution of the board of
    directors provides that  voting or  nonvoting shareholders  are entitled  to
    dissent and obtain payment for their shares.
 
    Unless  the articles of incorporation  provide otherwise, dissenters' rights
do not apply to the holders  of shares of any class  or series if the shares  of
the  class or series were registered on a national securities exchange or quoted
on the NASDAQ  National Market  System on  the record  date for  the meeting  of
shareholders  at which the corporate action giving rise to dissenters' rights is
to be approved or on the date a copy or summary of the plan of merger is  mailed
to   shareholders  pursuant  to   the  procedures  for   short-form  mergers  of
subsidiaries.
 
    Under Delaware  law, appraisal  rights are  available in  connection with  a
statutory  merger or  consolidation in  certain specified  situations. Appraisal
rights are not available when a  corporation is to be the surviving  corporation
and  no vote of its stockholders is required to approve the merger. In addition,
unless otherwise provided in the charter,  no appraisal rights are available  to
holders  of  shares of  any class  of stock  which  is either:  (a) listed  on a
national securities exchange or designated as a national market system  security
on  an inter-dealer quotation  system by the  National Association of Securities
Dealers, Inc., or  (b) held of  record by more  than 2,000 stockholders,  unless
such  stockholders are required  by the terms  of the merger  to accept anything
other than: (i)  shares of stock  of the surviving  corporation; (ii) shares  of
stock  of  another corporation  which are  or will  be so  listed on  a national
securities exchange or  designated as a  national market system  security in  an
interdealer  quotation system by the National Association of Securities Dealers,
Inc., or held of record by more  than 2,000 stockholders; (iii) cash in lieu  of
fractional  shares  of such  stock;  or (iv)  any  combination thereof.  The CBI
Certificate has no provisions for appraisal rights. Holders of CBI Common  Stock
will not have appraisal rights in connection with the Merger. See "The Merger --
Absence of Appraisal Rights."
 
PROVISIONS RELATING TO DIRECTORS
 
    Under  both Oregon law and Delaware law,  a corporation must have a board of
directors consisting of at least one director. The U. S. Bancorp Bylaws  provide
that  the U. S. Bancorp  Board of Directors shall consist  of not less than five
nor more than twenty-five  persons, the exact number  to be fixed as  determined
from  time to time by a majority of the full board, and provided that a majority
of the full  board may not  increase the number  of directors to  a number  that
exceeds  by more than four the number of directors last elected by shareholders.
The number of  directors of  U. S.  Bancorp is currently  fixed at  12. The  CBI
Bylaws provide that the number of directors of the corporation shall be 11.
 
    The  U. S. Bancorp Bylaws provide that  vacancies in the U. S. Bancorp Board
of Directors may be filled in accordance with Oregon law, which allows vacancies
to be filled by the shareholders or  the board of directors then in office.  The
CBI  Bylaws provide that vacancies may be  filled by a majority of the directors
then in office and that  the stockholders may fill  any vacancies not filled  by
the directors.
 
    Oregon  law permits classification of the board of directors if the articles
of incorporation or bylaws  so provide. Delaware  law permits classification  of
the  board of directors if the certificate  of incorporation or an initial bylaw
or a bylaw adopted by a vote of  the stockholders so provide. None of the U.  S.
Bancorp  Articles, the  U. S.  Bancorp Bylaws,  the CBI  Certificate or  the CBI
Bylaws provide for classification of directors.
 
                                       52
<PAGE>
    The U. S. Bancorp Bylaws provide that nominations of persons for election to
the U. S. Bancorp Board of Directors may  be made by the Board of Directors,  or
by any holder of U. S. Bancorp securities entitled to vote thereon. Nominations,
other  than those made by or on behalf  of the U. S. Bancorp Board of Directors,
must be made in writing and delivered or mailed to the chairman of the board not
less than 25 nor more  than 60 days prior to  the shareholders meeting at  which
the  directors are to be elected. If less than 30 days' notice of the meeting is
given to  shareholders, the  nominations  must be  mailed  or delivered  to  the
chairman  of the  board not later  than the close  of business on  the fifth day
following the day on which the notice of meeting is given to shareholders.
 
    The CBI Bylaws provide that nominations for election to the CBI Board may be
made by the CBI Board or by any stockholder entitled to vote for the election of
directors. Nominations for election to the CBI Board by any stockholder must  be
made  by notification in writing delivered or mailed to the president of CBI not
less than 14 or more  than 50 days prior to  any meeting of stockholders  called
for  the election of directors,  except that if less than  21 days notice of the
meeting is given to stockholders, such nominations may be mailed or delivered to
the president not later than the close of business on the seventh day  following
the day on which notice of the meeting was mailed.
 
    Every nomination for the CBI Board at a meeting of stockholders must include
a  statement  setting forth  certain  information set  forth  in the  CBI Bylaws
regarding each  proposed nominee  who  is not  an  incumbent director  and  each
person, acting alone or in conjunction with one or more other persons, who makes
such  nomination, or organizes, directs or  finances such nomination or solicits
proxies to vote for the nominee.
 
    Members of the CBI Board must  meet certain qualifications set forth in  the
CBI  Bylaws which include  provisions prohibiting any person  who is a director,
officer, or employee  of any other  bank or bank  holding company or  who has  a
conflict  of interest  that would  prevent such person  from acting  in the best
interest of CBI from being a member of the CBI Board.
 
    Under Oregon law, a director may be removed with or without cause unless the
articles of incorporation provide that directors may be removed only for  cause.
The U. S. Bancorp Articles do not provide that the directors may be removed only
for cause. If a director is selected by a voting group of shareholders, only the
shareholders  of that  voting group  may participate in  the vote  to remove the
director. If cumulative voting is authorized,  a director may not be removed  if
the  number of votes sufficient to elect the director under cumulative voting is
voted against the director's removal. If cumulative voting is not authorized,  a
director  may be removed only if the number of votes cast to remove the director
exceeds the number of votes cast not  to remove the director. A director may  be
removed by the shareholders only at a meeting called for the purpose of removing
the  director and the meeting notice must state  that the purpose, or one of the
purposes, of the meeting is removal of the director.
 
    Under Delaware  law, any  director or  the entire  board of  directors of  a
corporation  may be removed, with or without cause, by the holders of a majority
of the shares then  entitled to elect  directors. In the  case of a  corporation
whose  board is classified, stockholders may  effect such removal only for cause
unless the charter provides otherwise.
 
CERTAIN ANTITAKEOVER PROVISIONS
 
    Pursuant to Delaware  law, a corporation  shall not engage  in any  business
combination  with an interested stockholder (generally  defined as the holder of
15% or more  of the  corporation's voting  stock) for  a period  of three  years
following  the  date that  such  stockholder became  an  interested stockholder,
unless (a) the board  of directors approved either  the business combination  or
transaction  prior  to  the  date  that  the  interested  stockholder  became an
interested stockholder; (b) upon consummation of the transaction which  resulted
in   the  stockholder   becoming  an  interested   stockholder,  the  interested
stockholder  owned  at  least  85%  of  the  voting  stock  of  the  corporation
outstanding  at the  time the transaction  commenced, excluding  for purposes of
determining the  number of  shares outstanding  those shares  owned by  (i)  any
persons    who   are   directors   and   also   officers   and   (ii)   employee
 
                                       53
<PAGE>
stock plans in which  employee participants do not  have the right to  determine
confidentially  whether shares held  subject to the  plan will be  tendered in a
tender or exchange offer, or  (c) on or subsequent  to the date the  stockholder
became   an  interested  stockholder,  the   board  of  directors  approved  the
transaction and  the  stockholders  approved the  transaction,  not  by  written
consent,  but  at  an  annual  or  special  meeting  of  stockholders,  with  an
affirmative vote of two-thirds  of the outstanding  voting stock, excluding  any
stock  owned by the  interested stockholder. The  restrictions prescribed by the
statute will not be applicable if (a) a corporation's charter or bylaws  contain
a  provision expressly  providing that the  corporation shall not  be subject to
such statutory restrictions;  (b) if the  corporation does not  have a class  of
voting  stock  that  is  (i)  listed on  a  national  securities  exchange; (ii)
authorized for quotation  on an  inter-dealer quotation system  of a  registered
national  securities association;  or (iii)  held of  record by  more than 2,000
stockholders, unless any of the foregoing results from action taken directly  or
indirectly  by an interested stockholder or from a transaction in which a person
becomes an interested stockholder;  or (c) a  stockholder becomes an  interested
stockholder  inadvertently and divests sufficient shares so that the stockholder
ceases to be  an interested stockholder  and would  not at any  time during  the
three-year  period  immediately  prior  to a  business  combination  between the
corporation and the interested stockholder  have been an interested  stockholder
but for the inadvertent acquisition; or (d) the business combination is proposed
prior to the consummation or abandonment of and subsequent to the earlier of the
public  announcement or required notice to interested stockholders of a proposed
transaction: (i) involving  (A) a merger  or consolidation (except  a merger  in
respect  of which no vote  of the stockholders of  the corporation is required);
(B) a sale, lease, exchange, mortgage, pledge, transfer or other disposition  of
assets of the corporation or of any direct or indirect majority-owned subsidiary
of  the corporation  having an aggregate  market value  equal to 50%  or more of
either the  aggregate  market  value  of  all  the  assets  of  the  corporation
determined  on a  consolidated basis  or the aggregate  market value  of all the
outstanding stock of the corporation; or (C) a proposed tender offer or exchange
offer for 50% or more of the  outstanding voting stock of the corporation;  (ii)
which is with or by a person who either was not an interested stockholder during
the  previous  three years  or  who became  an  interested stockholder  with the
approval of the corporation's board of directors; and (iii) which is approved or
not opposed by  a majority of  the members of  the board of  directors who  were
directors  prior to  any person  becoming an  interested stockholder  during the
previous three years or were recommended for election or elected to succeed such
directors by a majority  of directors. Neither the  CBI Certificate nor the  CBI
Bylaws  contain any provision expressly providing  that the corporation will not
be subject to the restrictions prescribed by the statute.
 
    Under Article  11  of  the CBI  Certificate,  certain  business  combination
transactions  must be approved,  except in certain circumstances,  by 66 2/3% of
the then outstanding shares of capital  stock of CBI entitled to vote  generally
in the election of directors ("Voting Stock"). The transactions that are subject
to  the approval requirement are: (i) any  merger or consolidation of CBI or any
subsidiary with  an  Interested Stockholder  (as  defined below)  or  any  other
corporation  that  is,  or  after  such merger  or  consolidation  would  be, an
affiliate  of  an  Interested  Stockholder;  (ii)  any  sale,  lease,  exchange,
mortgage,  pledge,  transfer  or other  disposition  to or  with  any Interested
Stockholder or any affiliate of any Interested Stockholder of any assets of  CBI
or  any subsidiary having an aggregate fair  market value of $2,000,000 or more;
(iii) the issuance or transfer by CBI or any subsidiary of any securities of CBI
or  any  subsidiary  to  any  Interested  Stockholder  in  exchange  for   cash,
securities,  or property having a fair market  value of $2,000,000 or more; (iv)
the adoption of any plan or proposal for liquidation or dissolution of CBI by or
on behalf  of any  Interested Stockholder  or any  affiliate of  any  Interested
Stockholder;  or (v) any  reclassification of securities  or recapitalization of
CBI or any merger or  consolidation of CBI with any  of its subsidiaries or  any
other  transaction that has the effect  of increasing the proportionate share of
the outstanding shares of any class of equity security of CBI or any  subsidiary
that  is owned by any Interested Stockholder  or any affiliate of any Interested
Stockholder. An "Interested  Stockholder" is defined  in Article 11  of the  CBI
Certificate  as any person (other than CBI  or any of its subsidiaries) that (i)
is the beneficial owner  of 5% or  more of the voting  power of the  outstanding
Voting  Stock, (ii) is an  affiliate of CBI and at  any time within the two-year
period immediately prior to the date in question was the beneficial owner of  5%
or more of the then
 
                                       54
<PAGE>
outstanding  Voting Stock, or (iii) is an assignee or has otherwise succeeded to
any shares of  Voting Stock that  were at  any time during  the two-year  period
immediately prior to the date in question owned by an Interested Stockholder, if
such assignment or succession shall have occurred in the course of a transaction
or  series of transactions not involving a public offering within the meaning of
the Securities Act.
 
    The 66 2/3% approval  requirement does not apply  to a business  combination
transaction  if (i) the transaction is  approved by a majority of "disinterested
directors" (a disinterested director is defined as a member of the CBI Board who
is unaffiliated with  the Interested  Stockholder and was  a member  of the  CBI
Board  prior to  the time that  the Interested Stockholder  became an Interested
Stockholder); (ii) a state or  federal regulatory authority having  jurisdiction
under  the circumstances determines that the business combination is fair to the
holders of  the Voting  Stock, or  (iii)  all of  the following  conditions  are
satisfied:  (a)  the aggregate  amount  of cash  and  other consideration  to be
received per share  by holders  of CBI  Common Stock is  at least  equal to  the
higher of (A) the highest per share price paid by the Interested Stockholder for
shares  of CBI Common Stock, (x) within the two-year period immediately prior to
the first public announcement of the terms of the proposed business  combination
(the  "Announcement Date"),  or (y) in  the transaction in  which the Interested
Stockholder became an Interested  Stockholder, whichever is  higher and (B)  the
fair  market value per share of CBI Common Stock on the Announcement Date or the
date on which the Interested  Stockholder became an Interested Stockholder  (the
"Determination Date"), whichever is higher; (b) the aggregate amount of cash and
other  consideration to be received per share  of any other class of outstanding
Voting Stock shall  be at least  equal to the  highest of: (A)  the highest  per
share  price paid by the Interested Stockholder  for any shares of such class of
Voting Stock acquired by it (x) within the two-year period immediately prior  to
the Announcement Date or (y) in the transaction in which it became an Interested
Stockholder,  whichever is higher,  (B) if applicable,  the highest preferential
amount per share to which  the holders of shares of  such class of Voting  Stock
are entitled in the event of any liquidation, dissolution, or winding up of CBI,
or  (C) the fair  market value per  share of such  class of Voting  Stock on the
Announcement Date  or  the Determination  Date,  whichever is  higher;  (c)  the
consideration  to be received by  holders of a particular  class of Voting Stock
shall be in cash or the same form of consideration as the Interested Stockholder
used to acquire the largest number of shares of such class of Voting Stock;  (d)
after such Interested Stockholder has become an Interested Stockholder and prior
to  the consummation of  the business combination,  (A) except as  approved by a
majority of the  disinterested directors, there  shall have been  no failure  to
declare  and pay regular  quarterly dividends on any  preferred stock, (B) there
shall have been (x) no reduction in the annual rate of dividends paid on the CBI
Common Stock, except as  approved by a majority  of the disinterested  directors
and  (y) an  increase in the  annual rate of  dividends shall have  been made as
necessary  to  reflect  any  reclassification,  reorganization  or  any  similar
transaction  that has the effect of reducing the number of outstanding shares of
CBI Common Stock unless the failure to so increase such annual rate is  approved
by a majority of the disinterested directors, and (C) the Interested Stockholder
shall  not have become the owner of any additional shares of Voting Stock except
as part of the transaction that results in such Interested Stockholder  becoming
an  Interested  Stockholder;  (e)  the  Interested  Stockholder  shall  not have
received the  benefit of  any  loans, advances,  guarantees, pledges,  or  other
financial  assistance or any tax credits or other tax advantages provided by CBI
or any  subsidiary; and  (f) a  proxy or  information statement  describing  the
business  combination and complying with the requirements of the Exchange Act is
mailed at least 30  days prior to the  consummation of the business  combination
(whether  or not such  proxy or information  statement is required  to be mailed
pursuant to the Exchange Act).
 
    Article 11 of the CBI Certificate also requires the affirmative vote of  the
holders of 66 2/3% of the outstanding Voting Stock in order to amend, repeal, or
adopt any provisions inconsistent with Article 11.
 
    U.  S. Bancorp is  subject to the  Oregon Control Share  Act, which provides
that a person  (the "Oregon  Acquiror") who acquires  voting stock  of a  public
Oregon corporation (the "Oregon Acquired
 
                                       55
<PAGE>
Corporation") in a transaction that results in such Oregon Acquiror holding more
than  20%,  33%,  or  50% of  the  total  voting power  of  the  Oregon Acquired
Corporation (an "Oregon Control Share Acquisition")  may not vote the shares  it
acquires  in  the Oregon  Control  Share Acquisition  ("Oregon  Control Shares")
unless voting  rights  are accorded  to  such Oregon  Control  Shares by  (i)  a
majority  of  each voting  group  entitled to  vote and  (ii)  the holders  of a
majority of the outstanding voting  shares, excluding the Oregon Control  Shares
held  by  the Oregon  Acquiror  and all  shares  held by  officers  and employee
directors. The term "Oregon Acquiror" includes persons acting as a group.
 
    The Oregon  Acquiror may,  but is  not  required to,  submit to  the  Oregon
Acquired  Corporation  an  "Acquiring Person  Statement"  setting  forth certain
information about  itself and  its plans  with respect  to the  Oregon  Acquired
Corporation. The statement may also request that the Oregon Acquired Corporation
call  a special meeting of shareholders  to determine whether voting rights will
be restored  to the  Oregon Control  Shares.  If the  Oregon Acquiror  does  not
request  a special  shareholders meeting, the  issue of voting  rights of Oregon
Control Shares will be considered at the  next annual or special meeting of  the
Oregon  Acquired  Corporation's shareholders.  If  the Oregon  Acquiror's Oregon
Control Shares are accorded  voting rights and represent  a majority or more  of
all voting power, the Oregon Acquired Corporation's shareholders who do not vote
in  favor of voting rights for the Oregon  Control Shares will have the right to
receive the appraised "fair value" of their  shares, which may not be less  than
the  highest price paid per share by  the Oregon Acquiror for the Oregon Control
Shares.
 
    U. S. Bancorp is also subject  to certain provisions of the Oregon  Business
Corporation  Act that  govern "business  combinations" between  corporations and
"interested shareholders." The term "business combination" is defined  generally
to  include  mergers  or consolidations  between  an Oregon  corporation  and an
"interested shareholder," transactions with an interested shareholder  involving
the  assets or stock of the  corporation or its majority-owned subsidiaries, and
transactions that increase an  interested shareholder's percentage ownership  of
stock. The term "interested shareholder" is defined generally as any shareholder
who becomes a beneficial owner of 15% or more of the corporation's voting stock.
Business  combinations  between  corporations  and  interested  shareholders are
prohibited for  a three-year  period following  the date  that such  shareholder
became  an interested shareholder, unless (i) the corporation has elected in its
articles of incorporation not to be governed by the Oregon business  combination
law  (U.  S.  Bancorp  has  not  made  such  an  election),  (ii)  prior  to the
transaction, the corporation's board of  directors approves either the  business
combination  or the  transaction which resulted  in the  shareholder becoming an
interested shareholder, (iii) upon consummation of the transaction that made  it
an  interested shareholder, the interested shareholder owned at least 85% of the
voting  stock  of  the  corporation  outstanding  at  the  commencement  of  the
transaction  (excluding voting stock owned by directors who are also officers or
held in employee benefit plans in which the employees do not have a confidential
right to  tender  or  vote  stock  held by  the  plan),  or  (iv)  the  business
combination was approved by the corporation's board of directors and ratified by
at least 66 2/3% of the voting stock not owned by the interested shareholder.
 
    A  corporation may provide in its  articles of incorporation and bylaws that
the statutory  provisions described  above do  not apply  to its  shares. U.  S.
Bancorp  has  not  elected  to  "opt out"  of  such  provisions.  Therefore, the
statutory provisions described above will apply to acquisitions of shares of  U.
S.  Bancorp's voting stock.  The effect of  these statutes may  be to discourage
unfriendly attempts to acquire control of U. S. Bancorp.
 
    Under Article IX  of the U.  S. Bancorp Articles,  any business  combination
(defined  to include  various significant  corporate actions  such as  a merger,
consolidation, or  sale or  other transfer  of a  substantial portion  of U.  S.
Bancorp's assets) involving U. S. Bancorp and a person ("Related Person") which,
together  with its affiliates, is  the beneficial owner of 20%  or more of U. S.
Bancorp's capital stock entitled to vote generally in the election of directors,
must be approved by the affirmative vote  of the holders of at least  two-thirds
of  the outstanding  U. S.  Bancorp Common  Stock excluding  shares beneficially
owned by  the  Related  Person  and  its  affiliates  unless  (i)  the  business
combination  is a merger, consolidation or  exchange of shares providing for the
conversion of U. S. Bancorp  Common Stock into cash  or other property having  a
fair    value   per   share   not    less   than   the   highest   consideration
 
                                       56
<PAGE>
paid by the Related Person and its affiliates  for any of their shares of U.  S.
Bancorp  Common Stock, (ii) the Related Person  acquired all its shares of U. S.
Bancorp Common Stock  by means of  a cash tender  offer in which  it offered  to
purchase  any and all shares  tendered at the same  price, or (iii) the business
combination is approved by the U. S. Bancorp Board of Directors (A) before  such
person became a Related Person or (B) when continuing directors of U. S. Bancorp
(defined  as a director who was a member of the U. S. Bancorp Board of Directors
immediately prior to the time the Related Person became a Related Person and who
is not affiliated with the Related  Person) constituted a majority of the  Board
of  Directors  and at  least  two-thirds of  the  continuing directors  voted to
approve the  business combination.  Approval by  the holders  of not  less  than
two-thirds  of  the  outstanding U.  S.  Bancorp Common  Stock  excluding shares
beneficially owned by a  Related Person is required  to amend or repeal  Article
IX.
 
                                    EXPERTS
 
    The  consolidated financial statements of U. S. Bancorp and subsidiaries, as
of December 31,  1995 and 1994  and for each  of the three  years in the  period
ended  December  31, 1995,  incorporated in  this Proxy  Statement/Prospectus by
reference from  U. S.  Bancorp's 1995  Annual  Report on  Form 10-K,  have  been
audited  by  Deloitte  &  Touche  LLP  as  stated  in  their  report,  which  is
incorporated herein  by reference.  The consolidated  financial statements  give
retroactive effect to the 1995 merger of U. S. Bancorp and subsidiaries and West
One   Bancorp   and   subsidiaries,  which   has   been  accounted   for   as  a
pooling-of-interests. The consolidated  balance sheet  of West  One Bancorp  and
subsidiaries  as of December 31, 1994 and the related consolidated statements of
income, shareholders' equity, and cash  flows for each of  the two years in  the
period ended December 31, 1994 (not presented separately in U. S. Bancorp's 1995
Annual  Report on Form 10-K) were audited  by Coopers & Lybrand L.L.P. as stated
in its report, which  is incorporated herein by  reference from U. S.  Bancorp's
1995 Annual Report on Form 10-K. Such consolidated financial statements of U. S.
Bancorp  and subsidiaries are incorporated by  reference herein in reliance upon
the respective reports of  such firms given upon  their authority as experts  in
accounting   and  auditing.  Both   of  the  foregoing   firms  are  independent
accountants.
 
    The consolidated financial  statements of CBI  as of December  31, 1995  and
1994,  and for  each of the  years in  the three-year period  ended December 31,
1995, have been incorporated by reference herein in reliance upon the report  of
KPMG Peat Marwick LLP, independent certified public accountants, incorporated by
reference  herein, and upon the authority of  said firm as experts in accounting
and auditing.
 
                                 LEGAL OPINIONS
 
    The legality of the shares of U. S. Bancorp Common Stock to be issued to the
holders of  CBI Common  Stock pursuant  to the  Merger and  certain other  legal
matters  in connection  with the  Merger will  be passed  upon by  Miller, Nash,
Wiener, Hager & Carlsen, Portland, Oregon. John J. DeMott, a partner of  Miller,
Nash,  Wiener, Hager & Carlsen,  is secretary of U.  S. Bancorp and beneficially
owns 200 shares of U. S. Bancorp Common Stock.
 
                             STOCKHOLDER PROPOSALS
 
    CBI intends to hold an  annual meeting of stockholders  in 1997 only if  the
Merger  is not consummated on or before January  31, 1997. To the extent that an
annual meeting of stockholders in 1997  is scheduled, CBI anticipates that  next
year's  proxy statement will be mailed on or about April 9, 1997, and the annual
meeting will be held  on May 14,  1997. Any eligible  stockholder who wishes  to
submit  written proposals for possible inclusion  in next year's proxy statement
must be sure that all such proposals  are received by CBI on or before  December
12, 1996. Any such proposal should be mailed to California Bancshares, Inc., 100
Park Place, Suite 140, San Ramon, California 94583, Attention: Secretary.
 
                                       57
<PAGE>
                                                                      APPENDIX 1
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                     RESTATED AGREEMENT AND PLAN OF MERGER
 
                                    BETWEEN
 
                                 U. S. BANCORP
 
                                      AND
 
                          CALIFORNIA BANCSHARES, INC.
 
                         DATED AS OF FEBRUARY 11, 1996
 
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                               TABLE OF CONTENTS
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<S>        <C>                                                                                                   <C>
                                                         ARTICLE I
                                                         THE MERGER
 
     1.1   The Merger..........................................................................................           1
     1.2   Effective Time......................................................................................           1
     1.3   Effects of the Merger...............................................................................           1
     1.4   Conversion of CBI Common Stock......................................................................           1
     1.5   Bancorp Common Stock; Bancorp Preferred Stock.......................................................           2
     1.6   Options.............................................................................................           2
     1.7   Articles of Incorporation...........................................................................           2
     1.8   Bylaws..............................................................................................           2
     1.9   Tax Consequences....................................................................................           2
     1.10  Board of Directors..................................................................................           3
 
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                                                         ARTICLE II
                                                     EXCHANGE OF SHARES
<S>        <C>                                                                                                   <C>
 
     2.1   Bancorp to Make Shares Available....................................................................           3
     2.2   Exchange of Shares..................................................................................           3
<CAPTION>
 
                                                        ARTICLE III
                                           REPRESENTATIONS AND WARRANTIES OF CBI
<S>        <C>                                                                                                   <C>
 
     3.1   Corporate Organization..............................................................................           4
     3.2   Capitalization......................................................................................           5
     3.3   Authority; No Violation.............................................................................           6
     3.4   Consents and Approvals..............................................................................           6
     3.5   Reports.............................................................................................           7
     3.6   Financial Statements................................................................................           7
     3.7   Broker's Fees.......................................................................................           8
     3.8   Absence of Certain Changes or Events................................................................           8
     3.9   Legal Proceedings...................................................................................           8
     3.10  Taxes and Tax Returns...............................................................................           8
     3.11  Employees...........................................................................................           9
     3.12  SEC Reports.........................................................................................          10
     3.13  Compliance with Applicable Law......................................................................          11
     3.14  Certain Contracts...................................................................................          11
     3.15  Agreements with Regulatory Agencies.................................................................          12
     3.16  Undisclosed Liabilities.............................................................................          12
     3.17  State Takeover Laws.................................................................................          12
     3.18  Rights Agreement....................................................................................          12
     3.19  INTENTIONALLY OMITTED...............................................................................          12
     3.20  Interest Rate Risk Management Instruments; Derivatives..............................................          12
     3.21  Properties..........................................................................................          13
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                                                         ARTICLE IV
                                         REPRESENTATIONS AND WARRANTIES OF BANCORP
<S>        <C>                                                                                                   <C>
 
     4.1   Corporate Organization..............................................................................          13
     4.2   Capitalization......................................................................................          13
     4.3   Authority; No Violation.............................................................................          14
     4.4   Consents and Approvals..............................................................................          15
     4.5   Reports.............................................................................................          15
     4.6   Financial Statements................................................................................          15
     4.7   Brokers' Fees.......................................................................................          16
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     4.8   Absence of Certain Changes or Events................................................................          16
<S>        <C>                                                                                                   <C>
     4.9   Legal Proceedings...................................................................................          16
     4.10  Taxes and Tax Returns...............................................................................          17
     4.11  Employees...........................................................................................          17
     4.12  SEC Reports.........................................................................................          18
     4.13  Compliance with Applicable Law......................................................................          19
     4.14  Certain Contracts...................................................................................          19
     4.15  Agreements with Regulatory Agencies.................................................................          20
     4.16  Undisclosed Liabilities.............................................................................          20
     4.17  INTENTIONALLY OMITTED...............................................................................          20
     4.18  Interest Rate Risk Management Instruments; Derivatives..............................................          20
     4.19  State Takeover Laws.................................................................................          20
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                                                         ARTICLE V
                                         COVENANTS RELATING TO CONDUCT OF BUSINESS
<S>        <C>                                                                                                   <C>
 
     5.1   Conduct of CBI Businesses Prior to the Effective Time...............................................          20
     5.2   CBI Forbearances....................................................................................          21
     5.3   Bancorp Forbearances................................................................................          22
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                                                         ARTICLE VI
                                                   ADDITIONAL AGREEMENTS
<S>        <C>                                                                                                   <C>
 
     6.1   Regulatory Matters..................................................................................          23
     6.2   Access to Information...............................................................................          23
     6.3   Shareholder Approval................................................................................          24
     6.4   Legal Conditions to Merger..........................................................................          24
     6.5   Affiliates..........................................................................................          24
     6.6   Stock Exchange Listing of Shares....................................................................          24
     6.7   Employee Benefit Plans..............................................................................          25
     6.8   Indemnification; Directors' and Officers' Insurance.................................................          25
     6.9   Additional Agreements...............................................................................          27
     6.10  Advice of Changes...................................................................................          27
     6.11  Dividends...........................................................................................          27
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                                                        ARTICLE VII
                                                    CONDITIONS PRECEDENT
<S>        <C>                                                                                                   <C>
 
     7.1   Conditions to Each Party's Obligation to Effect the Merger..........................................          27
           (a) Shareholder Approval............................................................................          27
           (b) Nasdaq Listing..................................................................................          28
           (c) Other Approvals.................................................................................          28
           (d) Form S-4........................................................................................          28
           (e) No Injunctions or Restraints; Illegality........................................................          28
           (f) Federal Tax Opinions............................................................................          28
           (g) INTENTIONALLY OMITTED...........................................................................          28
     7.2   Conditions to Obligations of Bancorp................................................................          28
           (a) Representations and Warranties..................................................................          29
           (b) Performance of Obligations of CBI...............................................................          29
           (c) CBI Rights Agreement............................................................................          29
     7.3   Conditions to Obligations of CBI....................................................................          29
           (a) Representations and Warranties..................................................................          29
           (b) Performance of Obligations of Bancorp...........................................................          29
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                                                        ARTICLE VIII
                                                 TERMINATION AND AMENDMENT
<S>        <C>                                                                                                   <C>
 
     8.1   Termination.........................................................................................          29
     8.2   Effect of Termination...............................................................................          30
     8.3   Amendment...........................................................................................          30
     8.4   Extension; Waiver...................................................................................          30
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                                                         ARTICLE IX
                                                     GENERAL PROVISIONS
<S>        <C>                                                                                                   <C>
 
     9.1   Closing.............................................................................................          30
     9.2   Nonsurvival of Representations, Warranties, and Agreements..........................................          30
     9.3   Expenses............................................................................................          31
     9.4   Notices.............................................................................................          31
     9.5   Interpretation......................................................................................          31
     9.6   Counterparts........................................................................................          32
     9.7   Entire Agreement....................................................................................          32
     9.8   Governing Law.......................................................................................          32
     9.9   Severability........................................................................................          32
     9.10  Publicity...........................................................................................          32
     9.11  Assignment..........................................................................................          32
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                     RESTATED AGREEMENT AND PLAN OF MERGER
 
    RESTATED AGREEMENT AND PLAN OF MERGER, dated as of February 11, 1996, by and
between  U.  S.  Bancorp,  an  Oregon  corporation  ("Bancorp"),  and CALIFORNIA
BANCSHARES, INC., a Delaware corporation ("CBI").
 
    WHEREAS the Boards of Directors of  Bancorp and CBI have determined that  it
is in the best interests of their respective companies and their shareholders to
consummate  the merger  provided for  herein in which  CBI will,  subject to the
terms and  conditions set  forth  herein, merge  (the  "Merger") with  and  into
Bancorp, so that Bancorp is the surviving corporation in the Merger;
 
    WHEREAS  as a  condition to, and  on the  day immediately after  the date of
execution of, this  Agreement, Bancorp  and CBI are  entering into  a CBI  Stock
Option Agreement (the "CBI Option Agreement");
 
    WHEREAS  the parties desire to  make certain representations, warranties and
agreements  in  connection  with  the  Merger  and  also  to  prescribe  certain
conditions to the Merger; and
 
    WHEREAS  the  Boards of  Directors  of Bancorp  and  CBI on  March  8, 1996,
authorized the amendment and  restatement as set forth  herein of the  Agreement
and  Plan of Merger originally executed on February 11, 1996, such amendment and
restatement to be effective  as of February 11,  1996 (it being understood  that
any references to this Agreement shall refer to this Restated Agreement and Plan
of  Merger and any references  to the date of  this Agreement, including without
limitation any  references to  the  date as  of  which the  representations  and
warranties  of the parties herein  are made (except as  necessary to reflect the
authorization of  the amendments  effected on  March 8,  1996), shall  refer  to
February 11, 1996).
 
    NOW,  THEREFORE, in consideration of  the mutual covenants, representations,
warranties and agreements contained  herein, and intending  to be legally  bound
hereby, the parties agree as follows:
 
                                   ARTICLE I
                                   THE MERGER
 
    1.1  THE MERGER.  Subject to the terms and conditions of this Agreement, CBI
shall  merge with and into Bancorp at  the Effective Time (as defined in Section
1.2 hereof) in accordance with the Oregon Business Corporation Act (the  "OBCA")
and  the Delaware  General Corporation  Law (the  "DGCL"). Bancorp  shall be the
surviving corporation (hereinafter sometimes called the "Surviving Corporation")
in the Merger, and shall continue its corporate existence under the laws of  the
State  of  Oregon.  Upon  consummation of  the  Merger,  the  separate corporate
existence of CBI shall terminate.
 
    1.2  EFFECTIVE  TIME.  The  merger shall  become effective as  set forth  in
articles  of merger  (the "Articles  of Merger") which  shall be  filed with the
Secretary of  State  of the  State  of Oregon  (the  "Oregon Secretary")  and  a
certificate  of merger (the  "Certificate of Merger") which  shall be filed with
the Secretary of State of the  state of Delaware (the "Delaware Secretary"),  in
each  case, on the Closing Date (as defined in Section 9.1 hereof). The date and
time when the Merger becomes effective, as  set forth in the Articles of  Merger
and the Certificate of Merger, is herein referred to as the "Effective Time."
 
    1.3   EFFECTS OF  THE MERGER.  At  and after the  Effective Time, the Merger
shall have the effects set forth in Section 60.497 of the OBCA and Sections  259
and 261 of the DGCL.
 
    1.4   CONVERSION  OF CBI COMMON  STOCK.   At the Effective  Time, subject to
Section 2.2(e) hereof, by virtue  of the Merger, and  without any action on  the
part  of Bancorp, CBI or the holder of  any share of the common stock, par value
$2.50 per share, of  CBI ("CBI Common  Stock"), each share  of CBI Common  Stock
issued  and  outstanding immediately  prior to  the  Effective Time  (other than
shares of  CBI Common  Stock  held (x)  in CBI's  treasury  or (y)  directly  or
indirectly by Bancorp or CBI or any of
 
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their  respective  Subsidiaries (as  defined  below) (except  for  Trust Account
Shares and DPC Shares, as such terms are defined below)) shall be converted into
the right to receive 0.95 shares  (the "Exchange Ratio") of common stock,  $5.00
par value per share, of Bancorp ("Bancorp Common Stock").
 
    All  of the shares of  CBI Common Stock converted  into Bancorp Common Stock
pursuant  to  this  Article  I  shall   no  longer  be  outstanding  and   shall
automatically be canceled and shall cease to exist as of the Effective Time, and
each  certificate (each  a "CBI  Certificate") previously  representing any such
shares of CBI Common Stock shall thereafter represent the right to receive (i) a
certificate representing the number of whole shares of Bancorp Common Stock  and
(ii) cash in lieu of fractional shares into which the shares of CBI Common Stock
represented by such CBI Certificate have been converted pursuant to this Section
1.4  and Section 2.2(e) hereof.  CBI Certificates previously representing shares
of CBI  Common Stock  shall  be exchanged  for certificates  representing  whole
shares  of Bancorp Common Stock and cash  in lieu of fractional shares issued in
consideration therefor upon the surrender of such CBI Certificates in accordance
with Section 2.2 hereof, without any interest thereon. If prior to the Effective
Time (or as of a record date prior to the Effective Time) the outstanding shares
of Bancorp 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 Bancorp's capitalization,
then  an appropriate and proportionate adjustment  shall be made to the Exchange
Ratio.
 
    At the Effective Time, all shares of CBI Common Stock that are owned by  CBI
as  treasury stock and all shares of CBI Common Stock that are owned directly or
indirectly by Bancorp or CBI or any of their respective Subsidiaries (other than
shares of  CBI 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 Bancorp
Common Stock that  are similarly held,  whether held directly  or indirectly  by
Bancorp  or CBI, as the case may be,  being referred to herein as "Trust Account
Shares") and other than any shares of CBI Common Stock held by Bancorp or CBI or
any of their respective Subsidiaries in respect of a debt previously  contracted
(any  such shares of CBI  Common Stock, and shares  of Bancorp Common Stock that
are similarly held, whether held directly or indirectly by Bancorp or CBI or any
of their respective  Subsidiaries, being  referred to herein  as "DPC  Shares"))
shall  be canceled  and shall cease  to exist and  no stock of  Bancorp or other
consideration shall be  delivered in  exchange therefor. All  shares of  Bancorp
Common  Stock that are owned by CBI or any of its Subsidiaries (other than Trust
Account Shares and  DPC Shares) shall  become authorized but  unissued stock  of
Bancorp.
 
    1.5    BANCORP COMMON  STOCK; BANCORP  PREFERRED  STOCK.   At and  after the
Effective Time, each share of  Bancorp Common Stock and  each share of Series  A
preferred  stock, no  par value, of  Bancorp issued  and outstanding immediately
prior to the Closing Date shall remain an issued and outstanding share of common
stock or preferred stock, as the case  may be, of the Surviving Corporation  and
shall not be affected by the Merger.
 
    1.6   OPTIONS.   Outstanding options to  purchase CBI Common  Stock shall be
exchanged at the Effective Time as provided in Section 6.7(c).
 
    1.7  ARTICLES  OF INCORPORATION.   At the  Effective Time,  the Articles  of
Incorporation  of Bancorp, as in effect immediately prior to the Effective Time,
shall be the Articles of Incorporation of the Surviving Corporation.
 
    1.8  BYLAWS.   At the Effective  Time, the Bylaws of  Bancorp, as in  effect
immediately  prior to the Effective  Time, shall be the  Bylaws of the Surviving
Corporation until thereafter amended in accordance with applicable law.
 
    1.9  TAX CONSEQUENCES.   It is intended that  the Merger shall constitute  a
reorganization  within the meaning of  Section 368(a) of the  Code and that this
Agreement shall  constitute  a "plan  of  reorganization" for  the  purposes  of
Section 368 of the Code.
 
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    1.10   BOARD OF DIRECTORS.  From and  after the Effective Time, the Board of
Directors of the Surviving Corporation shall consist of members of the Board  of
Directors of Bancorp as constituted immediately prior to the Effective Time.
 
                                   ARTICLE II
                               EXCHANGE OF SHARES
 
    2.1   BANCORP TO MAKE SHARES AVAILABLE.   At or prior to the Effective Time,
Bancorp shall deposit,  or shall cause  to be  deposited, with a  bank or  trust
company  selected by Bancorp  and reasonably acceptable  to CBI (which  may be a
Subsidiary of Bancorp) (the "Exchange Agent"), for the benefit of the holders of
CBI Certificates, for exchange in accordance with this Article II,  certificates
representing  the shares  of Bancorp Common  Stock and  the cash in  lieu of any
fractional shares  (such cash  and  certificates for  shares of  Bancorp  Common
Stock,  together with any dividends or distributions with respect thereto, being
hereinafter referred to as the "Exchange Fund") to be issued pursuant to Section
1.4 and paid pursuant  to Section 2.2(a) in  exchange for outstanding shares  of
CBI Common Stock.
 
    2.2   EXCHANGE OF SHARES.   (a)  As soon  as practicable after the Effective
Time, and in no event  later than five business days  after receipt from CBI  or
its  transfer  agent of  a  list of  shareholders  of record  of  CBI as  of the
Effective Time, the Exchange Agent shall mail to each holder of record of a  CBI
Certificate  or Certificates a  form 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 CBI Certificates to  the Exchange Agent) and
instructions for use in effecting the surrender of CBI Certificates in  exchange
for certificates representing the shares of Bancorp Common Stock and the cash in
lieu  of fractional shares,  if any, into  which the shares  of CBI Common Stock
represented by  such  the  CBI  Certificate  or  Certificates  shall  have  been
converted pursuant to this Agreement. Upon proper surrender of a CBI Certificate
for exchange and cancellation to the Exchange Agent, together with such properly
completed  letter  of  transmittal,  duly  executed,  the  holder  of  such  CBI
Certificate shall be entitled  to receive in  exchange therefor, as  applicable,
(i)  a certificate  representing that number  of whole shares  of Bancorp Common
Stock into which the shares of  CBI Common Stock theretofore represented by  the
CBI  Certificate  so  surrendered  shall have  been  converted  pursuant  to the
provisions of Article I hereof and (ii) a check representing the amount of  cash
in  lieu of fractional shares, if any, that such holder has the right to receive
in respect of the CBI Certificate surrendered pursuant to the provisions of this
Article II, and the CBI Certificate so surrendered shall forthwith be  canceled.
No interest will be paid or accrued on the cash in lieu of fractional shares and
unpaid   dividends  and  distributions,  if  any,  payable  to  holders  of  CBI
Certificates. Notwithstanding  anything to  the  contrary contained  herein,  no
certificate  representing Bancorp Common  Stock or cash in  lieu of a fractional
share interest shall be delivered to a person who is an Affiliate (as defined in
Section 6.5) of CBI unless such Affiliate has theretofore executed and delivered
to Bancorp the agreement referred to in Section 6.5.
 
    (b) No dividends or  other distributions declared  after the Effective  Time
with  respect  to  Bancorp Common  Stock  shall be  paid  to the  holder  of any
unsurrendered CBI Certificate until the holder thereof shall surrender such  CBI
Certificate  in accordance with  this Article II.  After the surrender  of a CBI
Certificate in accordance with this Article II, the record holder thereof  shall
be  entitled to receive  any such dividends or  other distributions, without any
interest thereon, that theretofore had become payable with respect to shares  of
Bancorp Common Stock represented by such CBI Certificate.
 
    (c)  If any certificate representing shares of Bancorp Common Stock is to be
issued in a name  other than that  in which the  CBI Certificate surrendered  in
exchange therefor is registered, it shall be a condition of the issuance thereof
that  the  CBI  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
 
                                       3
<PAGE>
Bancorp Common Stock in any name other than that of the registered holder of the
CBI  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)  After the  Effective Time,  there shall  be no  transfers on  the stock
transfer books of CBI  of the shares  of CBI Common Stock  that were issued  and
outstanding  immediately prior  to the Effective  Time. If,  after the Effective
Time, CBI Certificates representing  such shares are  presented for transfer  to
the  Exchange  Agent,  they shall  be  canceled and  exchanged  for certificates
representing shares of Bancorp Common Stock as provided in this Article II.
 
    (e)  Notwithstanding  anything   to  the  contrary   contained  herein,   no
certificates  or scrip  representing fractional  shares of  Bancorp Common Stock
shall be issued upon the surrender for exchange of CBI Certificates, no dividend
or distribution with respect to Bancorp Common Stock shall be payable on or with
respect to any fractional share, and  such fractional share interests shall  not
entitle  the owner thereof  to vote or to  any other rights  of a shareholder of
CBI. In lieu of the issuance of any such fractional share, Bancorp shall pay  to
each  former shareholder of CBI who otherwise  would be entitled to receive such
fractional share an amount in cash determined by multiplying (i) the average  of
the  closing-sale  prices of  Bancorp Common  Stock on  the NASDAQ  Stock Market
National Market  System as  reported by  The Wall  Street Journal  for the  five
trading  days immediately preceding the  date of the Effective  Time by (ii) the
fraction of a share of Bancorp Common Stock which such holder would otherwise be
entitled to receive pursuant to Section 1.4.
 
    (f) Any  portion  of  the  Exchange  Fund  that  remains  unclaimed  by  the
shareholders  of CBI for twelve months after the Effective Time shall be paid to
Bancorp. Any shareholders  of CBI who  have not theretofore  complied with  this
Article  II shall thereafter look  only to Bancorp for  payment of the shares of
Bancorp Common Stock, cash in lieu of any fractional shares and unpaid dividends
and distributions on  the Bancorp Common  Stock deliverable in  respect of  each
share  of CBI Common Stock that such shareholder is entitled to receive pursuant
to this Agreement, without any interest thereon. Notwithstanding the  foregoing,
none  of Bancorp, CBI, the Exchange Agent or any other person shall be liable to
any former holder of shares of CBI Stock for any amount properly delivered to  a
public  official pursuant to  applicable abandoned property,  escheat or similar
laws.
 
    (g) In  the  event any  CBI  Certificate shall  have  been lost,  stolen  or
destroyed,  upon the making of an affidavit  of that fact by the person claiming
such CBI  Certificate  to be  lost,  stolen or  destroyed  and, if  required  by
Bancorp,  the posting  by such person  of a bond  in such amount  as Bancorp may
determine is reasonably  necessary as indemnity  against any claim  that may  be
made  against it with respect  to such CBI Certificate,  the Exchange Agent will
issue in exchange for such lost, stolen or destroyed CBI Certificate the  shares
of  Bancorp Common Stock  and cash in  lieu of fractional  shares deliverable in
respect thereof pursuant to this Agreement.
 
                                  ARTICLE III
                     REPRESENTATIONS AND WARRANTIES OF CBI
 
    Except as set forth in the  disclosure schedule of CBI delivered to  Bancorp
concurrently herewith (the "CBI Disclosure Schedule"), CBI hereby represents and
warrants to Bancorp as follows:
 
    3.1   CORPORATE ORGANIZATION.  (a)   CBI is a corporation duly organized and
validly existing under the laws of the state of Delaware. CBI has the  corporate
power  and authority  to own or  lease all of  its properties and  assets and to
carry on its  business as it  is now being  conducted, and is  duly licensed  or
qualified  to  do business  in  each jurisdiction  in  which the  nature  of the
business conducted by  it or  the character or  location of  the properties  and
assets  owned or leased  by it makes such  licensing or qualification necessary,
except where  the failure  to  be so  licensed or  qualified  would not  have  a
Material  Adverse Effect (as defined  below) on CBI. As  used in this Agreement,
the term "Material Adverse Effect" means,  with respect to Bancorp, CBI, or  the
Surviving  Corporation, as  the case  may be, a  material adverse  effect on the
business, results of  operations or financial  condition of such  party and  its
Subsidiaries  taken as a whole. As used in this Agreement, the word "Subsidiary"
 
                                       4
<PAGE>
when used with respect to any party means any bank, corporation, partnership  or
other organization, whether incorporated or unincorporated, that is consolidated
with  such party for financial  reporting purposes. CBI is  duly registered as a
bank holding company under the Bank Holding Company Act of 1956, as amended (the
"BHC Act"). The Certificate of Incorporation and Bylaws of CBI, copies of  which
have  previously been made available to  Bancorp, are true, complete and correct
copies of such documents as in effect as of the date of this Agreement.
 
    (b) CBI has  previously delivered  to Bancorp  a schedule  listing each  CBI
Subsidiary  and setting forth for each  such CBI Subsidiary the (i) jurisdiction
in which it  is organized, (ii)  jurisdictions in  which it is  qualified to  do
business,  and (iii) office  or agency having  primary regulatory authority over
its business  and operations.  Each CBI  Subsidiary (i)  is duly  organized  and
validly  existing as a  bank, corporation or  partnership under the  laws of its
jurisdiction of organization, (ii) is duly qualified to do business and in  good
standing  in all jurisdictions (whether federal,  state, local or foreign) where
its ownership or leasing of property or the conduct of its business requires  it
to  be so qualified  and in which  the failure to  be so qualified  would have a
Material Adverse Effect on CBI, and (iii) has all requisite corporate power  and
authority to own or lease its properties and assets and to carry on its business
as now conducted.
 
    (c)  The minute books of CBI accurately reflect in all material respects all
corporate actions  since January  1,  1993, of  its  shareholders and  Board  of
Directors (including committees of the Board of Directors of CBI).
 
    3.2   CAPITALIZATION.  (a)  The  authorized capital stock of CBI consists of
16,000,000 shares of CBI Common Stock  and 2,000,000 shares of preferred  stock,
no  par value per  share. At the close  of business on  December 31, 1995, there
were 10,060,685 shares  of CBI  Common Stock outstanding  and no  shares of  CBI
preferred stock outstanding. On December 31, 1995, no shares of CBI Common Stock
or  CBI  preferred stock  were reserved  for issuance,  except that  (i) 305,846
shares of CBI Common Stock were reserved for issuance pursuant to CBI's dividend
reinvestment and stock purchase plan (the "CBI DRIP"), (ii) 2,125,110 shares  of
CBI  Common Stock were reserved for issuance  upon the exercise of stock options
pursuant to the 1990  Stock Incentive Plan and  the Directors Stock Option  Plan
(the   "CBI  Stock  Plans"),  (iii)  400,000  shares  of  CBI  Series  A  junior
participating preferred stock,  no par  value, were reserved  for issuance  upon
exercise  of the rights (the "CBI Rights")  distributed to holders of CBI Common
Stock pursuant to the Rights Agreement, dated  as of June 30, 1995, between  CBI
and  First  Interstate Bank  of  California, as  Rights  Agent (the  "CBI Rights
Agreement"), and (iv) the  shares of CBI Common  Stock issuable pursuant to  the
CBI  Option Agreement. All  of the issued  and outstanding shares  of CBI Common
Stock have  been  duly  authorized  and  validly  issued  and  are  fully  paid,
nonassessable and free of preemptive rights with no personal liability attaching
to  the ownership thereof. Except as stated above,  CBI does not have and is not
bound by any outstanding subscriptions, options, warrants, calls, commitments or
agreements of any character calling for  the purchase or issuance of any  shares
of CBI Common Stock or CBI preferred stock or any other equity securities of CBI
or  any securities representing  the right to purchase  or otherwise receive any
shares of CBI Common Stock or  CBI preferred stock. CBI has previously  provided
Bancorp  with a list of the option holders,  the date of each option to purchase
CBI Common Stock granted, the number of shares subject to each such option,  the
expiration date of each such option, and the price at which each such option may
be  exercised under the CBI Stock Plans.  As reflected on such list, options for
677,555 shares  were outstanding  at December  31, 1995,  all of  which will  be
exercisable  prior to the  Effective Time in accordance  with their terms. Since
December 31, 1995, CBI  has not issued  any shares of its  capital stock or  any
securities  convertible into or exercisable for any shares of its capital stock,
other than pursuant to the exercise of employee stock options.
 
    (b) CBI owns directly  all of the issued  and outstanding shares of  capital
stock  of each of  the CBI Subsidiaries,  free and clear  of any liens, charges,
encumbrances and security interests whatsoever, and all of such shares are  duly
authorized  and validly  issued and  are fully  paid, nonassessable  and free of
preemptive rights,  with  no  personal  liability  attaching  to  the  ownership
thereof. No CBI Subsidiary
 
                                       5
<PAGE>
has  or is  bound by  any outstanding  subscriptions, options,  warrants, calls,
commitments or agreements of any character calling for the purchase or  issuance
of  any shares of capital stock or  any other equity security of such Subsidiary
or any securities representing  the right to purchase  or otherwise receive  any
shares  of  capital  stock or  any  other  equity security  of  such Subsidiary.
Assuming compliance by Bancorp with Section  1.6 hereof, at the Effective  Time,
there  will  not be  any  outstanding subscriptions,  options,  warrants, calls,
commitments or  agreements  of  any  character  by  which  CBI  or  any  of  its
Subsidiaries will be bound calling for the purchase or issuance of any shares of
the capital stock of CBI or any of its Subsidiaries.
 
    3.3    AUTHORITY; NO  VIOLATION.   (a)   CBI  has  full corporate  power and
authority  to  execute  and  deliver  this  Agreement  and  to  consummate   the
transactions  contemplated hereby. The execution  and delivery of this Agreement
and the consummation of the transactions contemplated hereby have been duly  and
validly approved by the Board of Directors of CBI. The Board of Directors of CBI
has  directed that  this Agreement and  the transactions  contemplated hereby be
submitted to CBI's shareholders for approval  at a meeting of such  shareholders
and,  except for the adoption  of this Agreement by  the affirmative vote of the
holders of a majority of  the outstanding shares of  CBI Common Stock, no  other
corporate proceedings on the part of CBI are necessary to approve this Agreement
and  to consummate the transactions contemplated hereby. This Agreement has been
duly and validly executed and delivered by CBI and (assuming due  authorization,
execution and delivery by Bancorp) constitutes a valid and binding obligation of
CBI, enforceable against CBI in accordance with its terms, except as enforcement
may be limited by general principles of equity whether applied in a court of law
or  a court of equity  and by bankruptcy, insolvency  and similar laws affecting
creditors rights and remedies generally.
 
    (b) Neither the  execution and  delivery of this  Agreement by  CBI nor  the
consummation  by CBI of the transactions  contemplated hereby, nor compliance by
CBI with any of the terms or  provisions hereof, will (i) violate any  provision
of  the Certificate of Incorporation or Bylaws  of CBI or (ii) assuming that the
consents and approvals referred to in Section 3.4 are duly obtained, (x) violate
any statute, code, ordinance, rule, regulation, judgment, order, writ, decree or
injunction applicable  to  CBI  or any  of  its  Subsidiaries or  any  of  their
respective  properties or  assets, or  (y) violate,  conflict with,  result in a
breach of  any provision  of or  the loss  of any  benefit under,  constitute  a
default  (or  an  event that,  with  notice or  lapse  of time,  or  both, would
constitute a  default)  under,  result in  the  termination  of or  a  right  of
termination  or cancellation under,  accelerate the performance  required by, or
result in the creation of any  lien, pledge, security interest, charge or  other
encumbrance upon any of the respective properties or assets of CBI or any of its
Subsidiaries  under, any  of the  terms, conditions  or provisions  of any note,
bond, mortgage, indenture,  deed of  trust, license, lease,  agreement or  other
instrument  or obligation to which CBI or any of its Subsidiaries is a party, or
by which they or any  of their respective properties or  assets may be bound  or
affected,  except  (in  the  case  of clause  (y)  above)  for  such violations,
conflicts, breaches or defaults that,  either individually or in the  aggregate,
will not have or be reasonably likely to have a Material Adverse Effect on CBI.
 
    3.4   CONSENTS AND APPROVALS.  Except for (i) the filing of applications and
notices, as  applicable, with  the Board  of Governors  of the  Federal  Reserve
System  (the "Federal Reserve Board") under the  BHC Act, (ii) the filing of any
requisite applications with the Office of  the Comptroller of the Currency  (the
"OCC")  or the Federal Deposit Insurance  Corporation (the "FDIC") in connection
with the merger  of Subsidiaries of  CBI and  Bancorp, (iii) the  filing of  any
required  applications or notices  with any state  bank regulatory agencies (the
"State Approvals"),  (iv)  the filing  with  the SEC  of  a proxy  statement  in
definitive  form relating  to the  meeting of CBI's  shareholders to  be held in
connection with this  Agreement and  the transactions  contemplated hereby  (the
"Proxy  Statement") and  the registration statement  on Form S-4  (the "S-4") in
which the Proxy Statement will  be included as a  prospectus, (v) the filing  of
the  Articles of Merger with the Oregon Secretary pursuant to the OBCA, (vi) the
filing of the Certificate of Merger with the Delaware Secretary pursuant to  the
DGCL,  (vii) such filings and  approvals as are required  to be made or obtained
under the securities or "Blue Sky" laws of various states in connection with the
issuance of the shares of Bancorp Common Stock
 
                                       6
<PAGE>
pursuant to  this  Agreement, (viii)  the  approval  of this  Agreement  by  the
requisite  vote of the shareholders of CBI,  and (ix) the consents and approvals
set forth in CBI Disclosure Schedule, no consents or approvals of or filings  or
registrations  with  any court,  administrative  agency or  commission  or other
governmental authority or instrumentality (each a "Governmental Entity") or with
any third party are necessary in connection with (A) the execution and  delivery
by  CBI of this Agreement and (B) the  consummation by CBI of the Merger and the
other transactions contemplated hereby.
 
    3.5  REPORTS.   CBI and each  of its Subsidiaries  have timely and  properly
filed  all  material reports,  registrations and  statements, together  with any
amendments required to be made with respect thereto, that they were required  to
file  since January 1, 1993, with (i) the Federal Reserve Board, (ii) the Office
of Thrift Supervision (the "OTS") under the Home Owners Loan Act ("HOLA"), (iii)
any state regulatory authority (each a "State Regulator), (iv) the OCC, (v)  the
FDIC,  and (vi)  any other  self-regulatory organization  ("SRO") (collectively,
"Regulatory Agencies"), and all other  material reports and statements  required
to  be  filed  by  them since  January  1,  1993,  and have  paid  all  fees and
assessments  due  and  payable  in  connection  therewith.  Except  for   normal
examinations  conducted  by a  Regulatory Agency  in the  regular course  of the
business of CBI  and its Subsidiaries,  no Regulatory Agency  has initiated  any
proceeding  or, to the best knowledge of CBI, investigation into the business or
operations of CBI or any of its Subsidiaries since January 1, 1993. There is  no
material  unresolved violation, criticism, or exception by any Regulatory Agency
with respect to any report or statement  relating to any examinations of CBI  or
any of its Subsidiaries.
 
    3.6   FINANCIAL STATEMENTS.  CBI  has previously delivered to Bancorp copies
of (a)  the  consolidated balance  sheets  of CBI  and  its Subsidiaries  as  of
December  31, for the fiscal  years 1993 and 1994,  and the related consolidated
statements of income,  changes in stockholders'  equity and cash  flows for  the
fiscal years 1992 through 1994, inclusive, as reported in CBI's Annual Report on
Form  10-K for the fiscal year ended December 31, 1994, filed with the SEC under
the Securities Exchange Act  of 1934, as amended  (the "Exchange Act"), in  each
case  accompanied  by the  audit report  of KPMG  Peat Marwick  LLP, independent
public accountants, with respect to CBI, (b) the unaudited consolidated  balance
sheet  of CBI  and its  Subsidiaries as  of December  31, 1995,  and the related
unaudited  consolidated  statements  of  income,  cash  flows  and  changes   in
stockholders'  equity for the fiscal year 1995 substantially in the form that is
proposed to be reported in CBI's Annual Report on Form 10-K for the period ended
December 31,  1995, filed  with the  SEC under  the Exchange  Act, and  (c)  the
unaudited  consolidated  balance sheets  of CBI  as of  September 30,  1995, and
September 30, 1994, and the related unaudited consolidated statements of income,
cash flows, and changes in stockholders'  equity for the nine months then  ended
as  reported  in  CBI's Quarterly  Report  on  Form 10-Q  for  the  period ended
September 30, 1995,  filed with the  SEC under the  Exchange Act. The  financial
statements  referred to in this Section  3.6 (including the related notes, where
applicable) fairly present (subject, in the case of the unaudited statements, to
recurring audit adjustments  normal in nature  and amount), the  results of  the
consolidated  operations and  changes in  stockholders' equity  and consolidated
financial position of CBI and its Subsidiaries for the respective fiscal periods
or as  of  the respective  dates  therein set  forth;  each of  such  statements
(including  the related notes, where applicable) comply in all material respects
with applicable  accounting  requirements  and  with  the  published  rules  and
regulations  of  the  SEC  with  respect thereto  and  each  of  such statements
(including the related notes, where applicable) has been prepared in  accordance
with  generally  accepted  accounting principles  ("GAAP")  consistently applied
during the periods involved, except in each case as indicated in such statements
or in the notes thereto  or, in the case  of unaudited quarterly statements,  as
permitted  by  Form 10-Q.  The  allowances for  credit  losses contained  in the
financial statements referred to in this  Section 3.6 were adequate as of  their
respective  dates to absorb reasonably anticipated  losses in the loan portfolio
of CBI and its Subsidiaries in view of the size and character of such portfolio,
the current economic conditions, and other  pertinent factors and no facts  have
subsequently  come  to  the attention  of  management  of CBI  that  would cause
management to restate in any material way the level of such allowance for credit
losses. With respect to other real estate owned by CBI and its Subsidiaries, the
value attributed thereto  for purposes  of compiling  such financial  statements
does  not exceed the aggregate  fair market value of such  real estate as of the
date of acquisition of such real estate or as
 
                                       7
<PAGE>
subsequently reduced,  all  in accordance  with  regulations of  the  applicable
Regulatory  Agencies. The  books and  records of  CBI and  its Subsidiaries have
been, and are being, maintained in all material respects in accordance with GAAP
and any  other applicable  legal and  accounting requirements  and reflect  only
actual transactions.
 
    3.7  BROKER'S FEES.  Except for the services of Goldman Sachs & Co. pursuant
to  an agreement dated  November 21, 1995,  a copy of  which has previously been
provided to  Bancorp,  neither CBI  nor  any CBI  Subsidiary  nor any  of  their
respective  officers or directors has employed  any broker or finder or incurred
any liability for any broker's fees, commissions or finder's fees in  connection
with  any of the transactions  contemplated by this Agreement  or the CBI Option
Agreement.
 
    3.8   ABSENCE  OF CERTAIN  CHANGES  OR EVENTS.    (a)   Except  as  publicly
disclosed  in CBI  Reports (as  defined below) filed  prior to  the date hereof,
since December  31,  1994, (i)  neither  CBI nor  any  of its  Subsidiaries  has
incurred any material liability, except in the ordinary course of their business
consistent  with their past practices,  and (ii) no event  has occurred that has
had, or  is reasonably  likely to  have,  individually or  in the  aggregate,  a
Material Adverse Effect on CBI.
 
    (b)  Except as  publicly disclosed  in CBI Reports  filed prior  to the date
hereof, since December 31, 1994, CBI and its Subsidiaries have carried on  their
respective  businesses in  the ordinary and  usual course  consistent with their
past practices.
 
    (c) Since January 1, 1995, neither CBI  nor any of its Subsidiaries has  (i)
except  for normal increases in the  ordinary course of business consistent with
past practice or  except as  required by  applicable law,  increased the  wages,
salaries, compensation, pension, or other fringe benefits or perquisites payable
to  any  executive officer,  employee, or  director from  the amount  thereof in
effect as of January 1, 1995, granted any severance or termination pay,  entered
into any contract to make or grant any severance or termination pay, or paid any
bonus  other than  customary year-end  bonuses, (ii)  suffered any  strike, work
stoppage, slowdown, or other labor disturbance, or (iii) been the subject of any
organizing activities known to CBI.
 
    3.9  LEGAL PROCEEDINGS.   (a)  Except as  publicly disclosed in CBI  Reports
filed  prior to the  date hereof, neither CBI  nor any of  its Subsidiaries is a
party to any,  and there  are no  pending or, to  the best  of CBI's  knowledge,
threatened,  material  legal,  administrative,  arbitral  or  other proceedings,
claims, actions or governmental or  regulatory investigations of any nature  (i)
against  CBI  or any  of  its Subsidiaries  as to  which  there is  a reasonable
possibility of  an adverse  determination and  which, if  adversely  determined,
would,  individually or in the aggregate, have  a Material Adverse Effect on CBI
or (ii) challenging the validity  or propriety of the transactions  contemplated
by this Agreement or the CBI Option Agreement.
 
    (b)   There  is  no  injunction,  order,  judgment,  decree,  or  regulatory
restriction imposed upon CBI, any  of its Subsidiaries or  the assets of CBI  or
any of its Subsidiaries that has had, or might reasonably be expected to have, a
Material Adverse Effect on CBI.
 
    3.10  TAXES AND TAX RETURNS.  (a)  Each of CBI and its Subsidiaries has duly
filed  all material federal, state and, to the best of CBI's knowledge, material
local information returns and tax returns required  to be filed by it (all  such
returns  being accurate and complete in all material respects) and has duly paid
or made provisions for the payment of all material Taxes (as defined below)  and
other  governmental charges which have been incurred or are due or claimed to be
due from it by  federal, state, county or  local taxing authorities  (including,
without limitation, if and to the extent applicable, those due in respect of its
properties,  income,  business, capital  stock, deposits,  franchises, licenses,
sales and payrolls)  other than  Taxes or  other charges  that (1)  are not  yet
delinquent  or are being contested  in good faith and  (2) have not been finally
determined. The  income  tax returns  of  CBI  and its  Subsidiaries  have  been
examined  by the  Internal Revenue Service  (the "IRS"), and  any liability with
respect thereto has been satisfied for all  years to and including 1981, and  no
material  deficiencies were asserted as a result of such examination or all such
deficiencies were  satisfied. To  the  best of  CBI's  knowledge, there  are  no
material  disputes  pending,  or  claims  asserted  for,  Taxes  or  assessments
 
                                       8
<PAGE>
upon CBI or any of its Subsidiaries, nor has CBI or any of its Subsidiaries been
requested to give any currently effective waivers extending the statutory period
of limitation  applicable to  any Federal,  state, county  or local  income  tax
return  for any period. In  addition, (i) proper and  accurate amounts have been
withheld by CBI and its Subsidiaries from their employees for all prior  periods
in  compliance in all  material respects with the  tax withholding provisions of
applicable federal, state and  local laws, except where  failure to do so  would
not have a Material Adverse Effect on CBI, (ii) federal, state, county and local
returns  that are accurate and complete in all material respects have been filed
by CBI and  its Subsidiaries for  all periods  for which returns  were due  with
respect  to  income tax  withholding,  Social Security  and  unemployment taxes,
except where failure to do so would  not have a Material Adverse Effect on  CBI,
(iii)  the amounts shown on  such federal, state, local  or county returns to be
due and payable have been paid in  full or adequate provision therefor has  been
included  by CBI  in its  consolidated financial  statements as  of December 31,
1995, except where failure to do so would not have a Material Adverse Effect  on
CBI  and (iv) there are no  tax liens upon any property  or assets of the CBI or
its Subsidiaries except liens for current taxes not yet due. To the knowledge of
CBI, no property of CBI or any of  its Subsidiaries is property that CBI or  any
of  its Subsidiaries is or  will be required to treat  as being owned by another
person pursuant to the provisions of Section 168(f)(8) of the Code (as in effect
prior to its  amendment by the  Tax Reform Act  of 1986) or  is "tax-exempt  use
property"  within the meaning of Section 169(h) of the Code. Neither CBI nor any
of its  Subsidiaries has  been  required to  include  in income  any  adjustment
pursuant  to  Section  481  of the  Code  by  reason of  a  voluntary  change in
accounting method initiated by CBI or any of its Subsidiaries, and the  Internal
Revenue  Service has not initiated or proposed  any such adjustment or change in
accounting method. Except as set forth in the financial statements described  in
Section  3.6 hereof, neither CBI nor any  of its Subsidiaries has entered into a
transaction which  is being  accounted for  as an  installment obligation  under
Section  453 of the  Code, which would  be reasonably likely  to have a Material
Adverse Effect on CBI.
 
    (b) As used in this Agreement, the term "Tax" or "Taxes" means all  federal,
state,  county, local, and  foreign income, excise,  gross receipts, ad valorem,
profits, gains, property, sales, transfer, use, payroll, employment,  severance,
withholding, duties, intangibles, franchise, and other taxes, charges, levies or
like  assessments together with all penalties  and additions to tax and interest
thereon.
 
    (c) Any amount that could  be received (whether in  cash or property or  the
vesting of property) as a result of any of the transactions contemplated by this
Agreement  by any employee, officer or director  of CBI or any of its affiliates
who is a "Disqualified Individual" (as such term is defined in proposed Treasury
Regulation Section  1.280G-1) under  any  employment, severance  or  termination
agreement, other compensation arrangement or CBI Benefit Plan (as defined below)
currently  in effect would not be characterized as an "excess parachute payment"
(as such term is defined in Section 280G(b)(1) of the Code).
 
    (d) No disallowance  of a  deduction under Section  162(m) of  the Code  for
employee  remuneration of any amount paid or payable by CBI or any Subsidiary of
CBI  under  any  contract,  plan,  program,  arrangement  or  understanding   is
reasonably likely.
 
    3.11   EMPLOYEES.   (a)  The CBI  Disclosure Schedule sets  forth a true and
complete  list  of  each  material  plan,  arrangement  or  agreement  regarding
compensation  or  benefits for  any employees,  former employees,  directors, or
former directors that is maintained as of  the date of this Agreement (the  "CBI
Benefit  Plans") by CBI or any of its  Subsidiaries or by any trade or business,
whether or not incorporated (an "ERISA  Affiliate"), all of which together  with
CBI  would be deemed a  "single employer" within the  meaning of Section 4001 of
the Employee Retirement Income Security Act of 1974, as amended ("ERISA").
 
    (b) CBI has heretofore delivered to Bancorp true and complete copies of each
of the CBI Benefit Plans and all related documents, including but not limited to
(i) the actuarial report for such Plan (if applicable) for each of the last  two
years,  and (ii) the most recent  determination letter from the Internal Revenue
Service (if applicable) for such Plan.
 
                                       9
<PAGE>
    (c) (i) Each of the CBI Benefit Plans has been operated and administered  in
all  material respects  in compliance  with applicable  laws, including  but not
limited to ERISA and the Code, (ii) each of the CBI Benefit Plans intended to be
"qualified" within the meaning  of Section 401(a) of  the Code is so  qualified,
(iii)  with respect  to each  CBI Benefit Plan  that is  subject to  Title IV of
ERISA, the present value of accrued benefits under such CBI Benefit Plan,  based
upon  the actuarial  assumptions used  for funding  purposes in  the most recent
actuarial report prepared  by such CBI  Benefit Plan's actuary  with respect  to
such CBI Benefit Plan, did not, as of its latest valuation date, exceed the then
current  value of the assets of such  CBI Benefit Plan allocable to such accrued
benefits, (iv)  no  CBI  Benefit  Plan  provides  benefits,  including,  without
limitation,  death or medical benefits (whether or not insured), with respect to
current or former  employees of  CBI, its  Subsidiaries or  any ERISA  Affiliate
beyond their retirement or other termination of service, other than (w) coverage
mandated  by applicable law, (x) death benefits or retirement benefits under any
"employee pension plan," as that term is  defined in Section 3(2) of ERISA,  (y)
deferred  compensation benefits accrued as liabilities  on the books of CBI, its
Subsidiaries or the ERISA Affiliates or (z)  benefits the full cost of which  is
borne  by the current or former employee  (or his beneficiary), (v) no liability
under Title IV of ERISA has been incurred by CBI, its Subsidiaries or any  ERISA
Affiliate  that has  not been  satisfied in full,  and no  condition exists that
presents a material  risk to  CBI, its Subsidiaries  or any  ERISA Affiliate  of
incurring  a  material  liability thereunder,  (vi)  no  CBI Benefit  Plan  is a
"multiemployer pension plan," as such term is defined in Section 3(37) of ERISA,
(vii) all contributions or other amounts  payable by CBI or its Subsidiaries  as
of  the  Effective Time  with respect  to each  CBI Benefit  Plan in  respect of
current or  prior  plan years  have  been paid  or  accrued in  accordance  with
generally  accepted accounting  practices and  Section 412  of the  Code, (viii)
neither CBI,  its  Subsidiaries  nor  any  ERISA  Affiliate  has  engaged  in  a
transaction  in  connection  with  which  CBI,  its  Subsidiaries  or  any ERISA
Affiliate could be subject to either a material civil penalty assessed  pursuant
to  Section 409 or 502(i) of ERISA or a material tax imposed pursuant to Section
4975 or 4976 of  the Code, and (ix)  to the best knowledge  of CBI there are  no
pending,  threatened  or  anticipated  claims  (other  than  routine  claims for
benefits) by, on behalf of or against any of the CBI Benefit Plans or any trusts
related thereto.
 
    (d)  Neither  the  execution  and   delivery  of  this  Agreement  nor   the
consummation  of the  transactions contemplated  hereby will  (i) result  in any
material  payment   including,  without   limitation,  severance,   unemployment
compensation, golden parachute or otherwise) becoming due to any director or any
employee of CBI or any of its affiliates from CBI or any of its affiliates under
any  CBI  Benefit  Plan  or otherwise,  (ii)  materially  increase  any benefits
otherwise payable under any CBI Benefit Plan or (iii) result in any acceleration
of the time of payment or vesting of any such benefits to any material extent.
 
    (e) CBI has  previously delivered to  Bancorp a schedule  setting forth  for
each  management  employee of  CBI or  its Subsidiaries  who is  a party  to any
employment, golden parachute,  or severance agreement,  the approximate  maximum
amount  of  payments  and benefits  other  than vested  retirement  benefits and
previously deferred  compensation  to  which  each  such  employee  will  become
entitled  in the event  that such employee's  employment is terminated following
the consummation of the Merger.
 
    3.12  SEC REPORTS.  CBI has previously made available to Bancorp an accurate
and complete copy of each (a) final registration statement, prospectus,  report,
schedule and definitive proxy statement filed since January 1, 1994, by CBI with
the  SEC pursuant  to the  Securities Act of  1933, as  amended (the "Securities
Act"), or the Exchange Act (the "CBI Reports") and prior to the date hereof  and
(b)  communication mailed by CBI to its  shareholders since January 1, 1994, 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 under 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.  CBI has  timely filed  all  CBI
Reports and other documents required to
 
                                       10
<PAGE>
be  filed by it under the Securities Act  and the Exchange Act, and, as of their
respective dates, all  CBI Reports complied  in all material  respects with  the
published rules and regulations of the SEC with respect thereto.
 
    3.13  COMPLIANCE WITH APPLICABLE LAW.  (a)  CBI and each of its Subsidiaries
hold, and have at all times held, all material licenses, franchises, permits and
authorizations  necessary for the lawful  conduct of their respective businesses
under and pursuant to all, and have complied with and are not in default in  any
material   respect  under   any,  applicable  laws,   statutes,  orders,  rules,
regulations  of  any  Governmental  Entity  relating  to  CBI  or  any  of   its
Subsidiaries,  except where the failure to  hold such license, franchise, permit
or authorization or such noncompliance or default would not, individually or  in
the aggregate, have a Material Adverse Effect on CBI, and neither CBI nor any of
its Subsidiaries knows of, or has received notice of, any material violations of
any of the above.
 
    (b) Except as would not have a Material Adverse Effect, (i) no real property
presently  or  previously  owned, operated,  or  leased  by CBI  or  any  of its
Subsidiaries or, to the best of  their knowledge, securing any obligations  owed
to  them has been  used as a  storage or disposal  site for hazardous substances
within the meaning  of any  applicable federal,  state, or  local statute,  law,
rule,  or regulation, and no hazardous  substances have been transferred from or
to such real property,  (ii) no governmental entity  has issued any citation  or
notice  of violation  relating to any  environmental matter  concerning any real
property owned, operated, or leased by CBI or any of its Subsidiaries or, to the
best of their knowledge securing any  obligations owed to them, and neither  CBI
nor  any of its Subsidiaries has received any notice that any such real property
may or will  be included on  any list of  areas affected by  any release of  any
hazardous  substance  or  that  it has  or  may  be named  as  a  responsible or
potentially responsible party with respect to any hazardous substance site,  and
(iii)  neither CBI nor  any of its  Subsidiaries has received  any notice of any
threatened investigation,  proceeding, or  litigation concerning  any such  real
property  with respect to any environmental matter or knows of any basis for any
such investigation, proceeding, or litigation.
 
    3.14  CERTAIN CONTRACTS.  (a)  Neither CBI nor any of its Subsidiaries is  a
party  to or  bound by  any contract,  arrangement, commitment  or understanding
(whether written or oral) (i) with  respect to the employment of any  directors,
officers,  employees or  consultants, (ii)  that, upon  the consummation  of the
transactions contemplated  by this  Agreement  will (either  alone or  upon  the
occurrence  of any additional acts or events)  result in any payment (whether of
severance pay  or  otherwise) becoming  due  from Bancorp,  CBI,  the  Surviving
Corporation,  or any of their respective Subsidiaries to any officer or employee
thereof, (iii) that  is a material  contract (as defined  in Item 601(b)(10)  of
Regulation S-K of the SEC) to be performed after the date of this Agreement that
has  not been filed or  incorporated by reference in  the CBI Reports, (iv) that
materially restricts the conduct of any line of business by CBI, (v) with or  to
a  labor union or guild (including  any collective bargaining agreement) or (vi)
(including any stock  option plan,  stock appreciation  rights plan,  restricted
stock  plan  or  stock purchase  plan)  any of  the  benefits of  which  will be
increased, or the vesting of the benefits  of which will be accelerated, by  the
occurrence  of any  of the transactions  contemplated by this  Agreement, or the
value of any of the benefits of which will be calculated on the basis of any  of
the  transactions contemplated by this Agreement. CBI has delivered to Bancorp a
complete list as of the date of this Agreement of each contract to which CBI  or
any of its Subsidiaries is a party that involves an amount in excess of $100,000
or  that has  an unexpired  term in  excess of  one year  from the  date of this
Agreement  other  than   loans,  deposits,  letters   of  credit,  and   similar
transactions  entered  into  by  CBI  in the  ordinary  course  of  business. In
addition, CBI has previously delivered to Bancorp true and correct copies of all
employment, consulting, and deferred compensation agreements that are in writing
and a written summary of all such contracts that are material to CBI and not  in
writing.  Each contract,  arrangement, commitment  or understanding  of the type
described in  this  Section  3.14(a),  whether  or not  set  forth  in  the  CBI
Disclosure  Schedule, is referred to herein as a "CBI Contract." Neither CBI nor
any of its Subsidiaries knows  of, or has received  notice of, any violation  of
any  CBI Contract by any  of the other parties  thereto that, individually or in
the aggregate, would have a Material Adverse Effect on CBI.
 
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<PAGE>
    (b) (i) Each CBI Contract is valid and binding and in full force and effect,
(ii) CBI and each of its Subsidiaries has in all material respects performed all
obligations required to  be performed  by it to  date under  each CBI  Contract,
except  where such  noncompliance, individually or  in the  aggregate, would not
have a Material Adverse Effect  on CBI, and (iii)  no event or condition  exists
that  constitutes or, after notice or lapse of time or both, would constitute, a
material default  on the  part of  CBI or  any of  its Subsidiaries  or, to  the
knowledge  of CBI, on the  part of any other party  under any such CBI Contract,
except where such default,  individually or in the  aggregate, would not have  a
Material Adverse Effect on CBI.
 
    3.15   AGREEMENTS  WITH REGULATORY  AGENCIES.   Neither CBI  nor any  of its
Subsidiaries is subject to any cease-and-desist or other order issued by, or  is
a   party  to  any  written  agreement,   consent  agreement  or  memorandum  of
understanding  with,  or  is  a  party  to  any  commitment  letter  or  similar
undertaking to, or is subject to any order or directive by, or is a recipient of
any supervisory letter from, or has adopted any board resolutions at the request
of (each, whether or not set forth in the CBI Disclosure Schedule, a "Regulatory
Agreement"),  any Regulatory Agency or  other Governmental Entity that restricts
the conduct  of its  business  or that  in any  manner  relates to  its  capital
adequacy,  its credit policies, its  management or its business,  nor has CBI or
any of  its  Subsidiaries  been  advised  by  any  Regulatory  Agency  or  other
Governmental  Entity that it is considering issuing or requesting any Regulatory
Agreement.
 
    3.16  UNDISCLOSED LIABILITIES.  Except for those liabilities that are  fully
reflected  or reserved against  on the consolidated  balance sheet of  CBI as of
December 31,  1995, and  for  liabilities incurred  in  the ordinary  course  of
business consistent with past practice, since December 31, 1995, neither CBI nor
any  of its  Subsidiaries has  incurred any  liability of  any nature whatsoever
(whether absolute, accrued, contingent or otherwise and whether due or to become
due) that, either alone or when combined with all similar liabilities, has  had,
or could reasonably be expected to have, a Material Adverse Effect on CBI.
 
    3.17   STATE TAKEOVER  LAWS.  The Board  of Directors of  CBI has taken such
actions as are necessary  such that the  provisions of Section  203 of the  DGCL
will  not apply  to this  Agreement or the  CBI Option  Agreement or  any of the
transactions contemplated hereby or thereby.
 
    3.18  RIGHTS AGREEMENT.  CBI  has taken all action (including, if  required,
redeeming all of the outstanding preferred stock purchase rights issued pursuant
to the CBI Rights Agreement or amending or terminating the CBI Rights Agreement)
so  that the entering into  of this Agreement and  the CBI Option Agreement, the
Merger, the acquisition of shares pursuant  to the CBI Option Agreement and  the
other transactions contemplated hereby and thereby do not and will not result in
the  grant of any rights to any person  under the CBI Rights Agreement or enable
or require the CBI Rights to be exercised, distributed or triggered.
 
    3.19  INTENTIONALLY OMITTED
 
    3.20  INTEREST RATE RISK MANAGEMENT INSTRUMENTS; DERIVATIVES.  (a)  CBI  has
heretofore  delivered  to  Bancorp an  accurate  and  complete list  of  (A) all
interest rate swaps, caps,  floors, option agreements,  and other interest  rate
risk   management  arrangements   and  other  instruments   generally  known  as
"derivatives" to which CBI or any of its Subsidiaries is a party or to which any
of their properties or assets may be subject and (B) all securities owned by CBI
or its Subsidiaries that  are generally known as  "structured note," "high  risk
mortgage  derivatives," "capped floating  rate notes," or  "capped floating rate
mortgage derivatives"  (instruments or  agreements of  the type  referred to  in
clauses (A) and (B), collectively, "Derivative Securities"). Neither CBI nor any
of  its Subsidiaries has  purchased any Derivative Security  for, or invested in
any Derivative Security any assets of, any account or person for which it or any
such subsidiary acts as a trustee, fiduciary, or investment advisor.
 
    (b) All Derivative Securities to which CBI  or any of its Subsidiaries is  a
party  or to which any of their properties or assets may be subject were entered
into in the ordinary course of business and, to
 
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<PAGE>
its knowledge, in accordance with prudent banking practice and applicable rules,
regulations, and policies  of the  Regulatory Agencies  and with  counterparties
believed  to be financially  responsible at the  time and are  legal, valid, and
binding obligations 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. CBI  and each of its  Subsidiaries
has  duly performed in all material  respects all of its obligations thereunder,
and, to  its  knowledge, there  are  no  breaches, violations,  or  defaults  or
allegations or assertions of such by any party thereunder.
 
    3.21   PROPERTIES.   Except as would  not have a  Material Adverse Effect on
CBI, (i) except for assets disposed of  in the ordinary course of business,  CBI
and  each of its Subsidiaries possess good and marketable title to and own, free
of any encumbrances (other than liens for taxes not yet due, statutory rights of
redemption with  respect to  properties  acquired in  the course  of  collecting
loans,  liens securing indebtedness of not  more than $100,000, and easements or
rights of  way  of  public  utilities or  similar  encumbrances  not  materially
interfering with the conduct of business), all of their material real, personal,
and  intangible properties and  other assets; (ii) the  leases pursuant to which
CBI or any of  its Subsidiaries lease  real or personal  property are valid  and
effective  in accordance  with their respective  terms and, to  the knowledge of
CBI, there is not, under  any such lease, any  material existing default or  any
event  which, with  the giving of  notice or  lapse of time  or otherwise, would
constitute a default; (iii) the material  properties owned or leased by CBI  and
each of its Subsidiaries are in good condition, free from any defects that would
materially  interfere with  the continued  use thereof  in the  conduct of their
normal operations; and (iv) CBI and  its Subsidiaries own or lease all  property
upon  which their continued business operations are materially dependent (except
for properties securing loans by CBI).
 
                                   ARTICLE IV
                   REPRESENTATIONS AND WARRANTIES OF BANCORP
 
    Except as set forth in the  disclosure schedule of Bancorp delivered to  CBI
concurrently  herewith  (the  "Bancorp  Disclosure  Schedule"),  Bancorp  hereby
represents and warrants to CBI as follows:
 
    4.1  CORPORATE ORGANIZATION.  (a)  Bancorp is a corporation duly  organized,
validly  existing  under  the laws  of  the  State of  Oregon.  Bancorp  has the
corporate power and authority to own or  lease all of its properties and  assets
and  to carry on its business as it is now being conducted, and is duly licensed
or qualified to  do business in  each jurisdiction  in which the  nature of  the
business  conducted by  it or  the character or  location of  the properties and
assets owned or leased  by it makes such  licensing or qualification  necessary,
except  where  the failure  to  be so  licensed or  qualified  would not  have a
Material Adverse Effect on Bancorp. Bancorp is duly registered as a bank holding
company under the BHC Act. The Articles of Incorporation and Bylaws of  Bancorp,
copies  of which have previously been made  available to CBI, are true, complete
and correct  copies of  such documents  as  in effect  as of  the date  of  this
Agreement.
 
    (b)  Each Bancorp Subsidiary (i) is duly organized and validly existing as a
bank,  corporation  or  partnership  under  the  laws  of  its  jurisdiction  of
organization,  (ii) is duly qualified to do business and in good standing in all
jurisdictions (whether federal, state, local or foreign) where its ownership  or
leasing  of  property  or the  conduct  of its  business  requires it  to  be so
qualified and in  which the failure  to be  so qualified would  have a  Material
Adverse  Effect  on Bancorp,  and (iii)  has all  requisite corporate  power and
authority to own or lease its properties and assets and to carry on its business
as now conducted.
 
    (c) The minute books of Bancorp accurately reflect in all material  respects
all  corporate actions since January  1, 1994, of its  shareholders and Board of
Directors (including committees of the Board of Directors of Bancorp).
 
    4.2  CAPITALIZATION.  (a)  The authorized capital stock of Bancorp  consists
of  (i) 250,000,000 shares of Bancorp Common  Stock, of which as of December 31,
1995, 150,592,468 shares were issued
 
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<PAGE>
and outstanding and  (ii) 50,000,000  shares of  Preferred Stock,  no par  value
("Bancorp  Preferred Stock"), of which as of December 31, 1995, 6,000,000 shares
designated as  Series A  were issued  and  outstanding. All  of the  issued  and
outstanding shares of Bancorp Common Stock and Bancorp Preferred Stock have been
duly authorized and validly issued and are fully paid, nonassessable and free of
preemptive  rights,  with  no  personal  liability  attaching  to  the ownership
thereof. As of the date of this  Agreement, except for shares of Bancorp  Common
Stock  reserved for issuance  pursuant to the Bancorp  Benefit Plans (as defined
below), and (iii) Bancorp's dividend  reinvestment and stock purchase plan  (the
"Bancorp  DRIP"), Bancorp  does not  have and  is not  bound by  any outstanding
subscriptions, options,  warrants,  calls,  commitments  or  agreements  of  any
character  calling for the purchase or issuance  of any shares of Bancorp Common
Stock or Bancorp Preferred  Stock or any other  equity securities of Bancorp  or
any  securities  representing the  right to  purchase  or otherwise  receive any
shares of Bancorp Common  Stock or Bancorp Preferred  Stock. As of December  31,
1995,  12,277,723  shares of  Bancorp Common  Stock  were reserved  for issuance
pursuant to the Bancorp DRIP and Bancorp Benefit Plans and no shares of  Bancorp
Preferred  Stock were reserved for  issuance. As of the  date of this Agreement,
since December 31, 1995, Bancorp has not issued any shares of its capital  stock
or  any securities convertible into or exercisable for any shares of its capital
stock, other than pursuant to (i) the exercise of employee stock options granted
prior to such date, (ii) the  Bancorp Option Agreement, (iii) the Bancorp  DRIP,
(iv)  the Bancorp  Employee Investment  Plan, and  (v) the  grant of  options to
non-employee directors.  The  shares  of  Bancorp Capital  Stock  to  be  issued
pursuant  to the Merger will  be duly authorized and  validly issued and, at the
Effective Time, all such  shares will be fully  paid, nonassessable and free  of
preemptive  rights,  with  no  personal  liability  attaching  to  the ownership
thereof.
 
    (b) Bancorp owns, directly or indirectly, all of the issued and  outstanding
shares  of capital stock of each of  the Bancorp Subsidiaries, free and clear of
any liens, charges, encumbrances and  security interests whatsoever, and all  of
such  shares  are  duly  authorized  and  validly  issued  and  are  fully paid,
nonassessable  and  free  of  preemptive  rights,  with  no  personal  liability
attaching to the ownership thereof. No Bancorp Subsidiary has or is bound by any
outstanding  subscriptions, options, warrants,  calls, commitments or agreements
of any character calling for the purchase  or issuance of any shares of  capital
stock  or  any  other  equity  security of  such  Subsidiary  or  any securities
representing the right to  purchase or otherwise receive  any shares of  capital
stock or any other equity security of such Subsidiary.
 
    4.3   AUTHORITY; NO  VIOLATION.  (a)   Bancorp has  full corporate power and
authority  to  execute  and  deliver  this  Agreement  and  to  consummate   the
transactions  contemplated hereby. The execution  and delivery of this Agreement
and the consummation of the transactions contemplated hereby have been duly  and
validly  approved by the  Board of Directors  of Bancorp and  no other corporate
proceedings on the part of Bancorp  are necessary to approve this Agreement  and
to consummate the transactions contemplated hereby. This Agreement has been duly
and  validly executed and delivered by  Bancorp and (assuming due authorization,
execution and delivery  by CBI) constitutes  a valid and  binding obligation  of
Bancorp,  enforceable against  Bancorp in accordance  with its  terms, except as
enforcement may be limited by general principles of equity whether applied in  a
court of law or a court of equity and by bankruptcy, insolvency and similar laws
affecting creditors rights and remedies generally.
 
    (b) Neither the execution and delivery of this Agreement by Bancorp, nor the
consummation  by Bancorp of the transactions contemplated hereby, nor compliance
by Bancorp with  any of the  terms or  provisions hereof, will  (i) violate  any
provisions  of  the  Articles of  Incorporation  or  Bylaws of  Bancorp  or (ii)
assuming that the  consents and approvals  referred to in  Section 4.4 are  duly
obtained,  (x) violate any statute, code, ordinance, rule, regulation, judgment,
order,  writ,  decree  or  injunction  applicable  to  Bancorp  or  any  of  its
Subsidiaries  or any of  their respective properties or  assets, or (y) violate,
conflict with, result in a breach of any provision of or the loss of any benefit
under, constitute a default (or an event which, with notice or lapse of time, or
both, would constitute a default) under, result in the termination of or a right
of termination or  cancellation under, accelerate  the performance required  by,
 
                                       14
<PAGE>
or  result in  the creation  of any lien,  pledge, security  interest, charge or
other encumbrance upon any of the respective properties or assets of Bancorp  or
any of its Subsidiaries under, any of the terms, conditions or provisions of any
note,  bond, mortgage,  indenture, deed of  trust, license,  lease, agreement or
other instrument or obligation to which Bancorp or any of its Subsidiaries is  a
party,  or by which they or any of  their respective properties or assets may be
bound or affected, except (in the case of clause (y) above) for such violations,
conflicts, breaches or defaults  which either individually  or in the  aggregate
will  not have  or be  reasonably likely  to have  a Material  Adverse Effect on
Bancorp.
 
    4.4  CONSENTS AND APPROVALS.  Except for (i) the filing of applications  and
notices,  as applicable, with the Federal Reserve  Board under the BHC Act, (ii)
the filing of any requisite applications with the OCC or the FDIC in  connection
with  the merger  of Subsidiaries of  CBI and  Bancorp, (iii) the  filing of the
State Approvals, (iv) the  filing with the  SEC of the  Proxy Statement and  the
S-4, (v) the filing of the Articles of Merger with the Oregon Secretary pursuant
to  the OBCA,  (vi) the filing  of the  Certificate of Merger  with the Delaware
Secretary pursuant to the DGCL, (vii) such filings and approvals as are required
to be made or obtained under the securities or "Blue Sky" laws of various states
in connection with the issuance of  the shares of Bancorp Common Stock  pursuant
to  this Agreement, and (viii)  the approval of this  Agreement by the requisite
vote of the  shareholders of  CBI, no  consents or  approvals of  or filings  or
registrations with any Governmental Entity or with any third party are necessary
in  connection with (A) the execution and  delivery by Bancorp of this Agreement
and (B) the  consummation by Bancorp  of the Merger  and the other  transactions
contemplated hereby.
 
    4.5  REPORTS.  Bancorp and each of its Subsidiaries have timely and properly
filed  all  material reports,  registrations and  statements, together  with any
amendments required to be made with respect thereto, that they were required  to
file since January 1, 1994, with the Regulatory Agencies, and all other material
reports  and statements required to be filed  by them since January 1, 1994, and
have paid all  fees and  assessments due  and payable  in connection  therewith.
Except  for normal examinations conducted by  a Regulatory Agency in the regular
course of the business of Bancorp and its Subsidiaries, no Regulatory Agency has
initiated any proceeding  or, to  the best knowledge  of Bancorp,  investigation
into  the business  or operations  of Bancorp or  any of  its Subsidiaries since
January 1,  1994.  There is  no  material unresolved  violation,  criticism,  or
exception  by  any Regulatory  Agency with  respect to  any report  or statement
relating to any examinations of Bancorp or any of its Subsidiaries.
 
    4.6  FINANCIAL STATEMENTS.  Bancorp  has previously delivered to CBI  copies
of  (a) the consolidated  balance sheets of  Bancorp and its  Subsidiaries as of
December 31, for the  fiscal years 1993 and  1994, and the related  consolidated
statements  of income,  changes in shareholders'  equity and cash  flows for the
fiscal years  1992 through  1994,  inclusive, as  reported in  Bancorp's  Annual
Report  on Form 10-K for the fiscal year ended December 31, 1994, filed with the
SEC under the  Exchange Act, in  each case  accompanied by the  audit report  of
Deloitte  & Touche  LLP, independent auditors  with respect to  Bancorp, (b) the
unaudited consolidated  balance sheet  of  Bancorp and  its subsidiaries  as  of
December  31,  1995, and  the related  consolidated  statements of  income, cash
flows, and changes in  shareholders' equity for the  fiscal year ended  December
31, 1995, substantially in the form that is proposed to be reported in Bancorp's
Annual  Report on Form 10-K  for the fiscal year  ended December 31, 1995, filed
with the SEC under the Exchange Act, and (c) the unaudited consolidated  balance
sheets  of Bancorp and its Subsidiaries as  of September 30, 1995, and September
30, 1994,  and the  related unaudited  consolidated statements  of income,  cash
flows  and changes  in shareholders'  equity for the  nine months  then ended as
reported in  Bancorp's  Quarterly Report  on  Form  10-Q for  the  period  ended
September  30, 1995, filed  with the SEC  under the Exchange  Act. The financial
statements referred to in this Section  4.6 (including the related notes,  where
applicable) fairly present (subject, in the case of the unaudited statements, to
recurring  audit adjustments  normal in nature  and amount), the  results of the
consolidated operations  and changes  in shareholders'  equity and  consolidated
financial  position of  Bancorp and its  Subsidiaries for  the respective fiscal
periods or as of the respective dates therein set forth; each of such statements
(including the  related  notes,  where  applicable)  complies  in  all  material
respects   with  applicable  accounting  requirements  and  with  the  published
 
                                       15
<PAGE>
rules and  regulations  of  the SEC  with  respect  thereto, and  each  of  such
statements  (including the related notes, where applicable) has been prepared in
accordance with GAAP consistently applied during the periods involved, except in
each case as indicated  in such statements  or in the notes  thereto or, in  the
case  of  unaudited  quarterly  statements,  as  permitted  by  Form  10-Q.  The
allowances for credit losses contained  in the financial statements referred  to
in  this  Section 4.6  were  adequate as  of  their respective  dates  to absorb
reasonably  anticipated  losses  in  the  loan  portfolio  of  Bancorp  and  its
Subsidiaries  in view of the  size and character of  such portfolio, the current
economic conditions, and other pertinent factors and no facts have  subsequently
come  to the attention of  management of Bancorp that  would cause management to
restate in any material way the level of such allowance for credit losses.  With
respect  to other real estate  owned by Bancorp and  its Subsidiaries, the value
attributed thereto for purposes of compiling such financial statements does  not
exceed  the aggregate fair  market value of such  real estate as  of the date of
acquisition of such real  estate or as subsequently  reduced, all in  accordance
with regulations of the applicable Regulatory Agencies. The books and records of
Bancorp  and  its  Subsidiaries have  been,  and  are being,  maintained  in all
material respects in  accordance with GAAP  and any other  applicable legal  and
accounting requirements and reflect only actual transactions.
 
    4.7   BROKER'S FEES.  Neither Bancorp  nor any Bancorp Subsidiary nor any of
their respective officers  or directors  has employed  any broker  or finder  or
incurred  any liability for  any broker's fees, commissions  or finder's fees in
connection with any of  the transactions contemplated by  this Agreement or  the
CBI Option Agreement.
 
    4.8    ABSENCE  OF CERTAIN  CHANGES  OR EVENTS.    (a)   Except  as publicly
disclosed in Bancorp Reports (as defined below) filed prior to the date  hereof,
since  December 31, 1994, (i) as of  the date of this Agreement, neither Bancorp
nor any of its Subsidiaries has  incurred any material liability, except in  the
ordinary course of their business consistent with their past practices, and (ii)
no  event  has  occurred  that  has  had,  or  is  reasonably  likely  to  have,
individually or in the aggregate, a Material Adverse Effect on Bancorp.
 
    (b) Except as publicly disclosed in Bancorp Reports filed prior to the  date
hereof,  from December 31, 1994, through the date of this Agreement, Bancorp and
its Subsidiaries have carried on their respective businesses in the ordinary and
usual course consistent with their past practices.
 
    (c) Since January 1, 1995, neither  Bancorp nor any of its Subsidiaries  has
(i)  suffered any strike, work stoppage, slowdown, or other labor disturbance or
(ii) been the subject of any organizing activities.
 
    4.9   LEGAL PROCEEDINGS.   (a)    Except as  publicly disclosed  in  Bancorp
Reports  filed  prior  to  the  date hereof,  neither  Bancorp  nor  any  of its
Subsidiaries is a  party to  any and there  are no  pending or, to  the best  of
Bancorp's  knowledge,  threatened, material  legal, administrative,  arbitral or
other proceedings, claims, actions or governmental or regulatory  investigations
of  any nature (i) against Bancorp or any  of its Subsidiaries as to which there
is a reasonable possibility of an adverse determination and which, if  adversely
determined,  would, individually  or in the  aggregate, have  a Material Adverse
Effect on  Bancorp  or  (ii)  challenging  the  validity  or  propriety  of  the
transactions contemplated by this Agreement.
 
    (b)   There  is  no  injunction,  order,  judgment,  decree,  or  regulatory
restriction imposed  upon Bancorp,  any of  its Subsidiaries  or the  assets  of
Bancorp or any of its Subsidiaries that has had, or might reasonably be expected
to have, a Material Adverse Effect on Bancorp or the Surviving Corporation.
 
                                       16
<PAGE>
    4.10   TAXES AND TAX RETURNS.  (a)  Each of Bancorp and its Subsidiaries has
duly filed all material federal, state and, to the best of Bancorp's  knowledge,
material local information returns and tax returns required to be filed by it on
or prior to the date hereof (all such returns being accurate and complete in all
material  respects) and has duly paid or  made provisions for the payment of all
material Taxes (as defined below) and other governmental charges which have been
incurred or are due or  claimed to be due from  it by federal, state, county  or
local  taxing authorities on or prior to  the date of this Agreement (including,
without limitation, if and to the extent applicable, those due in respect of its
properties, income,  business, capital  stock, deposits,  franchises,  licenses,
sales  and payrolls)  other than  Taxes or  other charges  (1) that  are not yet
delinquent or are being contested  in good faith and  (2) have not been  finally
determined.  The income  tax returns of  Bancorp and its  Subsidiaries have been
examined by the  Internal Revenue  Service (the  "IRS") and  any liability  with
respect  thereto has been satisfied for all  years to and including 1985, and no
material deficiencies were asserted as a result of such examination or all  such
deficiencies  were satisfied. To  the best of Bancorp's  knowledge, there are no
material disputes pending,  or claims  asserted for, Taxes  or assessments  upon
Bancorp  or any of its Subsidiaries, nor  has Bancorp or any of its Subsidiaries
been requested to give any  currently effective waivers extending the  statutory
period  of limitation applicable  to any federal, state,  county or local income
tax return for  any period. In  addition, (i) proper  and accurate amounts  have
been withheld by Bancorp and its Subsidiaries from their employees for all prior
periods  in  compliance  in  all  material  respects  with  the  tax withholding
provisions of applicable federal, state and local laws, except where failure  to
do  so would not have a Material Adverse Effect on Bancorp, (ii) federal, state,
county and local returns that are accurate and complete in all material respects
have been  filed by  Bancorp and  its  Subsidiaries for  all periods  for  which
returns  were due  with respect to  income tax withholding,  Social Security and
unemployment taxes, except  where failure  to do so  would not  have a  Material
Adverse Effect on Bancorp, (iii) the amounts shown on such federal, state, local
or  county returns  to be  due and payable  have been  paid in  full or adequate
provision therefor has been  included by Bancorp  in its consolidated  financial
statements as of December 31, 1995, except where failure to do so would not have
a  Material Adverse Effect on  Bancorp and (iv) there are  no Tax liens upon any
property or assets of the Bancorp  or its Subsidiaries except liens for  current
taxes not yet due. To the knowledge of Bancorp, no property of Bancorp or any of
its  Subsidiaries is property that Bancorp or any of its Subsidiaries is or will
be required to treat as being owned by another person pursuant to the provisions
of Section 168(f)(8) of the Code (as in effect prior to its amendment by the Tax
Reform Act  of 1986)  or is  "tax-exempt  use property"  within the  meaning  of
Section 169(h) of the Code. Neither Bancorp nor any of its Subsidiaries has been
required to include in income any adjustment pursuant to Section 481 of the Code
by reason of a voluntary change in accounting method initiated by Bancorp or any
of  its  Subsidiaries, and  the Internal  Revenue Service  has not  initiated or
proposed any such adjustment or change in accounting method. Except as set forth
in the financial statements described in Section 4.6 hereof, neither Bancorp nor
any of its Subsidiaries has entered into a transaction which is being  accounted
for  as an installment obligation under Section  453 of the Code, which would be
reasonably likely to have a Material Adverse Effect on Bancorp.
 
    (b) Any amount that could  be received (whether in  cash or property or  the
vesting of property) as a result of any of the transactions contemplated by this
Agreement  by  any  employee, officer  or  director  of Bancorp  or  any  of its
affiliates who  is a  "Disqualified  Individual" (as  such  term is  defined  in
proposed  Treasury Regulation Section 1.280G-1)  under any employment, severance
or termination agreement, other compensation arrangement or Bancorp Benefit Plan
currently in effect would not be characterized as an "excess parachute  payment"
(as such term is defined in Section 280G(b)(1) of the Code).
 
    (c)  No disallowance  of a  deduction under Section  162(m) of  the Code for
employee remuneration of any amount paid or payable by Bancorp or any Subsidiary
of Bancorp under any  contract, plan, program,  arrangement or understanding  is
reasonably likely.
 
    4.11  EMPLOYEES.  (a)  The Bancorp Disclosure Schedule sets forth a true and
complete  list  of  each  material  plan,  arrangement  or  agreement  regarding
compensation or benefits for any employees,
 
                                       17
<PAGE>
former employees, directors, or  former directors that is  maintained as of  the
date  of this  Agreement (the  "Bancorp Benefit Plans")  by Bancorp,  any of its
Subsidiaries or  by  any trade  or  business;  whether or  not  incorporated  (a
"Bancorp ERISA Affiliate"), all of which together with Bancorp would be deemed a
"single employer" within the meaning of Section 4001 of ERISA.
 
    (b) Bancorp has heretofore delivered to CBI true and complete copies of each
of  the  Bancorp Benefit  Plans  and all  related  documents, including  but not
limited  to  (i)  the  actuarial  report  for  such  Bancorp  Benefit  Plan  (if
applicable)  for  each  of  the  last  two  years,  and  (ii)  the  most  recent
determination letter from the Internal Revenue Service (if applicable) for  such
Bancorp Benefit Plan.
 
    (c) (i) Each of the Bancorp Benefit Plans has been operated and administered
in  all material respects in compliance  with applicable laws, including but not
limited to ERISA and the Code, (ii)  each of the Bancorp Benefit Plans  intended
to  be  "qualified" within  the  meaning of  Section 401(a)  of  the Code  is so
qualified, (iii) with respect  to each Bancorp Benefit  Plan that is subject  to
Title  IV of  ERISA, the  present value of  accrued benefits  under such Bancorp
Benefit Plan, based upon the actuarial assumptions used for funding purposes  in
the most recent actuarial report prepared by such Bancorp Benefit Plan's actuary
with  respect to such Bancorp Benefit Plan,  did not, as of its latest valuation
date, exceed the then current value of  the assets of such Bancorp Benefit  Plan
allocable  to  such  accrued benefits,  (iv)  no Bancorp  Benefit  Plan provides
benefits, including without limitation death or medical benefits (whether or not
insured),  with  respect  to  current  or  former  employees  of  Bancorp,   its
Subsidiaries  or any  Bancorp ERISA Affiliate  beyond their  retirement or other
termination of service, other than (w) coverage mandated by applicable law,  (x)
death benefits or retirement benefits under any "employee pension plan," as that
term  is defined  in Section 3(2)  of ERISA, (y)  deferred compensation benefits
accrued as liabilities on the books of Bancorp, its Subsidiaries or the  Bancorp
ERISA  Affiliates or (z) benefits the full cost of which is borne by the current
or former employee  (or his  beneficiary), (v) no  liability under  Title IV  of
ERISA  has  been incurred  by  Bancorp, its  Subsidiaries  or any  Bancorp ERISA
Affiliate that has  not been  satisfied in full,  and no  condition exists  that
presents  a  material risk  to Bancorp,  its Subsidiaries  or any  Bancorp ERISA
Affiliate of incurring a material liability thereunder, (vi) no Bancorp  Benefit
Plan is a "multiemployer pension plan," as such term is defined in Section 3(37)
of  ERISA, (vii) all  contributions or other  amounts payable by  Bancorp or its
Subsidiaries as of the Effective Time with respect to each Bancorp Benefit  Plan
in  respect  of  current  or prior  plan  years  have been  paid  or  accrued in
accordance with GAAP and  Section 412 of the  Code, (viii) neither Bancorp,  its
Subsidiaries  nor any  Bancorp ERISA Affiliate  has engaged in  a transaction in
connection with which Bancorp, its  Subsidiaries or any Bancorp ERISA  Affiliate
could be subject to either a material civil penalty assessed pursuant to Section
409  or 502(i) of  ERISA or a material  tax imposed pursuant  to Section 4975 or
4976 of  the Code,  and (ix)  to  the best  knowledge of  Bancorp there  are  no
pending,  threatened  or  anticipated  claims  (other  than  routine  claims for
benefits) by, on behalf of  or against any of the  Bancorp Benefit Plans or  any
trusts related thereto.
 
    (d)   Neither  the  execution  and  delivery   of  this  Agreement  nor  the
consummation of  the transactions  contemplated hereby  will (i)  result in  any
material   payment  (including,  without   limitation,  severance,  unemployment
compensation, golden parachute or otherwise) becoming due to any director or any
employee of  Bancorp  or any  of  its affiliates  from  Bancorp or  any  of  its
affiliates under any Bancorp Benefit Plan or otherwise, (ii) materially increase
any  benefits otherwise payable under any  Bancorp Benefit Plan, or (iii) result
in any acceleration of the  time of payment or vesting  of any such benefits  to
any material extent.
 
    4.12  SEC REPORTS.  Bancorp has previously made available to CBI an accurate
and  complete copy of each (a) final registration statement, prospectus, report,
schedule and definitive proxy statement filed since January 1, 1994, by  Bancorp
with  the SEC pursuant to  the Securities Act or  the Exchange Act (the "Bancorp
Reports") and prior to the date  hereof and (b) communication mailed by  Bancorp
to  its shareholders since January 1, 1994, 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  under which they
 
                                       18
<PAGE>
were made, not misleading, except that information  as of a later date shall  be
deemed to modify information as of an earlier date. Bancorp has timely filed all
Bancorp  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
Bancorp  Reports complied in all material  respects with the published rules and
regulations of the SEC with respect thereto.
 
    4.13   COMPLIANCE  WITH APPLICABLE  LAW.   (a)    Bancorp and  each  of  its
Subsidiaries   hold,  and  have  at  all  times  held,  all  material  licenses,
franchises, permits and authorizations necessary for the lawful conduct of their
respective businesses under and pursuant to all, and have complied with and  are
not  in default  in any material  respect under any,  applicable laws, statutes,
orders, rules, or regulations of any Governmental Entity relating to Bancorp  or
any  of  its  Subsidiaries,  except  where the  failure  to  hold  such license,
franchise, permit or authorization or  such noncompliance or default would  not,
individually or in the aggregate, have a Material Adverse Effect on Bancorp, and
neither Bancorp nor any of its Subsidiaries knows of, or has received notice of,
any material violations of any of the above.
 
    (b) Except as would not have a Material Adverse Effect, (i) no real property
presently  or previously  owned, operated,  or leased by  Bancorp or  any of its
Subsidiaries or, to the best of  their knowledge, securing any obligations  owed
to  them has been  used as a  storage or disposal  site for hazardous substances
within the meaning  of any  applicable federal,  state, or  local statute,  law,
rule,  or regulation, and no hazardous  substances have been transferred from or
to such real property,  (ii) no governmental entity  has issued any citation  or
notice  of violation  relating to any  environmental matter  concerning any real
property owned, operated, or leased by Bancorp or any of its Subsidiaries or, to
the best of their knowledge securing  any obligations owed to them, and  neither
Bancorp  nor any of its Subsidiaries has  received any notice that any such real
property may or will be included on any list of areas affected by any release of
any hazardous substance  or that  it has  or may be  named as  a responsible  or
potentially  responsible party with respect to any hazardous substance site, and
(iii) neither Bancorp nor any of its Subsidiaries has received any notice of any
threatened investigation,  proceeding, or  litigation concerning  any such  real
property  with respect to any environmental matter or knows of any basis for any
such investigation, proceeding, or litigation.
 
    4.14  CERTAIN CONTRACTS.   (a)   As of the date  of this Agreement,  neither
Bancorp  nor any  of its Subsidiaries  is a party  to or bound  by any contract,
arrangement, commitment  or understanding  (whether written  or oral)  (i)  with
respect  to the employment of any directors, officers, employees or consultants,
(ii) that,  upon  the consummation  of  the transactions  contemplated  by  this
Agreement  will (either alone or  upon the occurrence of  any additional acts or
events) result in any payment (whether  of severance pay or otherwise)  becoming
due  from Bancorp,  CBI, the surviving  Corporation, or any  of their respective
Subsidiaries to  any officer  or  employee thereof,  (iii)  that is  a  material
contract  (as defined  in Item 601(b)(10)  of Regulation  S-K of the  SEC) to be
performed after  the  date  of  this  Agreement  that  has  not  been  filed  or
incorporated by reference in the Bancorp Reports, (iv) that materially restricts
the  conduct of any line of business by Bancorp, (v) with or to a labor union or
guild (including any  collective bargaining agreement),  or (vi) (including  any
stock  option plan,  stock appreciation  rights plan,  restricted stock  plan or
stock purchase plan)  any of the  benefits of  which will be  increased, or  the
vesting  of the benefits of which will  be accelerated, by the occurrence of any
of the transactions contemplated by this Agreement,  or the value of any of  the
benefits  of which will  be calculated on  the basis of  any of the transactions
contemplated by  this  Agreement.  Each  contract,  arrangement,  commitment  or
understanding  of the type described in this Section 4.14(a), whether or not set
forth in the Bancorp  Disclosure Schedule, is referred  to herein as a  "Bancorp
Contract." Neither Bancorp nor any of its Subsidiaries knows of, or has received
notice  of, any violation  of any Bancorp  Contract by any  of the other parties
thereto that, individually or  in the aggregate, would  have a Material  Adverse
Effect on Bancorp.
 
    (b)  (i) Each Bancorp  Contract is valid  and binding and  in full force and
effect, (ii) Bancorp and each of  its Subsidiaries has in all material  respects
performed  all obligations  required to  be performed by  it to  date under each
Bancorp Contract,  except  where  such noncompliance,  individually  or  in  the
 
                                       19
<PAGE>
aggregate,  would not have  a Material Adverse  Effect on Bancorp,  and (iii) no
event or condition exists that constitutes or, after notice or lapse of time, or
both, would constitute, a material default on the part of Bancorp or any of  its
Subsidiaries  or, to the  knowledge of Bancorp,  on the part  of any other party
under any such Bancorp Contract, except  where such default, individually or  in
the aggregate, would not have a Material Adverse Effect on Bancorp.
 
    4.15   AGREEMENTS WITH REGULATORY AGENCIES.   Neither Bancorp nor any of its
Subsidiaries is subject to any cease-and-desist or other order issued by, or  is
a   party  to  any  written  agreement,   consent  agreement  or  memorandum  of
understanding  with,  or  is  a  party  to  any  commitment  letter  or  similar
undertaking to, or is subject to any order or directive by, or is a recipient of
any supervisory letter from, or has adopted any board resolutions at the request
of  (each,  whether or  not  set forth  in  the Bancorp  Disclosure  Schedule, a
"Bancorp Regulatory  Agreement"), any  Regulatory Agency  or other  Governmental
Entity  that restricts the conduct of its business or that in any manner relates
to its capital adequacy,  its credit policies, its  management or its  business,
nor has Bancorp or any of its Subsidiaries been advised by any Regulatory Agency
or  other Governmental Entity  that it is considering  issuing or requesting any
Regulatory Agreement.
 
    4.16  UNDISCLOSED LIABILITIES.  As of the date of this Agreement, except for
those  liabilities  that  are  fully  reflected  or  reserved  against  on   the
consolidated  balance sheet of  Bancorp dated as  of December 31,  1995, and for
liabilities incurred in  the ordinary  course of business  consistent with  past
practice,  since December 31, 1995, neither  Bancorp nor any of its Subsidiaries
has incurred any liability of any nature whatsoever (whether absolute,  accrued,
contingent  or otherwise and whether due or to become due) that, either alone or
when combined with  all similar  liabilities, has  had, or  could reasonably  be
expected to have, a Material Adverse Effect on Bancorp.
 
    4.17  INTENTIONALLY OMITTED
 
    4.18   INTEREST RATE RISK MANAGEMENT INSTRUMENTS; DERIVATIVES.  (a)  Bancorp
has heretofore delivered to CBI an accurate and complete list of all  Derivative
Securities  to which  Bancorp or any  of its Subsidiaries  is a party  or any of
their properties may  be subject, or  that are owned  by Bancorp or  any of  its
Subsidiaries.  Neither Bancorp  nor any  of its  Subsidiaries has  purchased any
Derivative Security for, or invested in  any Derivative Security any assets  of,
any  account or person  for which it or  any such Subsidiary  acts as a trustee,
fiduciary, or investment advisor.
 
    (b) All Derivative Securities to which Bancorp or any of its Subsidiaries is
a party  or to  which any  of their  properties or  assets may  be subject  were
entered  into  in the  ordinary course  of  business and,  to its  knowledge, in
accordance with prudent banking practice and applicable rules, regulations,  and
policies  of  the Regulatory  Agencies and  with  counterparties believed  to be
financially  responsible  at  the  time  and  are  legal,  valid,  and   binding
obligations 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. Bancorp and each of its Subsidiaries has  duly
performed  in all material  respects all of its  obligations thereunder, and, to
its knowledge, there are no breaches, violations, or defaults or allegations  or
assertions of such by any party thereunder.
 
    4.19  STATE TAKEOVER LAWS.  The Board of Directors of Bancorp has taken such
actions  as are necessary such that the  provisions of Sections 60.825 to 60.845
of the Oregon Business Corporation  Act regarding business combinations and  the
Oregon  Control Share  Act (Sections  60.801 to 60.813)  will not  apply to this
Agreement or to any of the transactions contemplated hereby or thereby.
 
                                   ARTICLE V
                   COVENANTS RELATING TO CONDUCT OF BUSINESS
 
    5.1  CONDUCT  OF CBI BUSINESSES  PRIOR TO  THE EFFECTIVE TIME.   During  the
period  from  the  date of  this  Agreement  to the  Effective  Time,  except as
expressly contemplated  or  permitted  by  this  Agreement  or  the  CBI  Option
Agreement,  CBI  shall, and  shall cause  its Subsidiaries  to, (i)  conduct its
 
                                       20
<PAGE>
business in  the  usual,  regular  and  ordinary  course  consistent  with  past
practice,  (ii) use reasonable best efforts  to maintain and preserve intact its
business organization,  employees and  advantageous business  relationships  and
retain  the services of its officers and  key employees and (iii) take no action
that would adversely affect or delay the ability of CBI or Bancorp to obtain any
necessary approvals of  any Regulatory  Agency or  other governmental  authority
required  for the transactions  contemplated hereby or  to perform its covenants
and agreements under this Agreement or the CBI Option Agreement.
 
    5.2  CBI FORBEARANCES.  During the period from the date of this Agreement to
the Effective  Time,  except as  expressly  contemplated or  permitted  by  this
Agreement  or the CBI Option Agreement, CBI  shall not, and shall not permit any
of its Subsidiaries to, without the prior written consent of Bancorp:
 
    (a) other  than in  the ordinary  course of  business consistent  with  past
practice,  incur  any indebtedness  for  borrowed money  (other  than short-term
indebtedness incurred to refinance  short-term indebtedness and indebtedness  of
CBI  or any  of its  Subsidiaries to CBI  or any  of its  Subsidiaries; it being
understood and agreed that incurrence of indebtedness in the ordinary course  of
business shall include, without limitation, the creation of deposit liabilities,
purchases  of federal funds, sales of  certificates of deposit and entering into
repurchase  agreements),  assume,   guarantee,  endorse  or   otherwise  as   an
accommodation  become responsible for  the obligations of  any other individual,
corporation or other entity, or make any loan or advance;
 
    (b) adjust, split, combine or reclassify any capital stock; make, declare or
pay any dividend or  make any other distribution  on, or directly or  indirectly
redeem,  purchase or otherwise acquire,  any shares of its  capital stock or any
securities or obligations, convertible  into or exchangeable  for any shares  of
its  capital stock, or grant or issue  any stock appreciation rights or grant or
issue to any individual,  corporation or other entity  any right to acquire  any
shares  of its capital stock (except for regular quarterly cash dividends at the
rate not in excess of the rate being paid at the date of this Agreement as  such
rate  may  be increased  at times  and in  amounts as  are consistent  with past
practice and except for dividends paid  by any of its wholly owned  Subsidiaries
or  any of their wholly  owned Subsidiaries); or issue  any additional shares of
capital stock or securities or obligations convertible into or exchangeable  for
shares of its capital stock except pursuant to (A) the exercise of stock options
outstanding  as of the  date hereof, (B)  the CBI Option  Agreement, (C) the CBI
Rights Agreement; or (D) the  CBI DRIP until the  CBI DRIP is terminated,  which
shall occur as soon as practicable after the date hereof;
 
    (c)  sell, transfer, mortgage,  encumber or otherwise dispose  of any of its
properties or assets to any individual, corporation or other entity other than a
direct or indirect  wholly owned Subsidiary,  or cancel, release  or assign  any
indebtedness to any such person or any claims held by any such person, except in
the  ordinary course  of business consistent  with past practice  or pursuant to
contracts or agreements in force at the date of this Agreement;
 
    (d) except for transactions  in the ordinary  course of business  consistent
with  past practice, make any material investment either by purchase of stock or
securities, contributions to  capital, property  transfers, or  purchase of  any
property  or assets of  any other individual, corporation  or other entity other
than a wholly owned Subsidiary thereof;
 
    (e) except for loans, deposits, letters of credit, and similar  transactions
in the ordinary course of business consistent with past practice, (i) enter into
any  contract or agreement that involves an amount in excess of $100,000 or that
will have a term in  excess of one year or  (ii) terminate or materially  modify
any  contract or agreement that involves an amount in excess of $100,000 or that
has a remaining  term in  excess of  one year, or  (iii) commit  to any  capital
expenditure,  or make any capital expenditure not committed to prior to the date
of this Agreement, in excess of $10,000;
 
    (f) increase in any manner the compensation or fringe benefits of any of its
employees other than increases for employees in the ordinary course of  business
consistent with past practice or pay
 
                                       21
<PAGE>
any  pension  or  retirement allowance  not  required  by any  existing  plan or
agreement to any such employees or become a party to, amend or commit itself  to
any  pension, retirement, profit-sharing or welfare benefit plan or agreement or
employment agreement  with  or  for  the benefit  of  any  employee  other  than
amendments  required to comply with  applicable legal requirements or accelerate
the vesting of any stock options or other stock-based compensation;
 
    (g) solicit, encourage  or authorize  any individual,  corporation or  other
entity  to solicit from any  third party any inquiries  or proposals relating to
the disposition of  its business  or assets, or  the acquisition  of its  voting
securities,  or the merger of it or any of its Subsidiaries with any corporation
or other entity other than as provided by this Agreement (and CBI shall promptly
notify Bancorp of  all of  the relevant details  relating to  all inquiries  and
proposals  which it may receive  relating to any of  such matters) or unless CBI
shall have determined based  upon the written advice  of counsel that  fiduciary
duties  under applicable law require  otherwise, participate in any negotiations
concerning or otherwise facilitate any such transaction;
 
    (h) settle any claim, action or proceeding involving material money damages,
except in the ordinary course of business consistent with past practice;
 
    (i) take any action that would prevent or impede the Merger from  qualifying
as a reorganization within the meaning of Section 368 of the Code;
 
    (j)  amend its certificate of incorporation or its bylaws;
 
    (k) other than in prior consultation with Bancorp, restructure or materially
change  its  investment  securities  portfolio  or  its  gap  position,  through
purchases, sales  or  otherwise,  or  the  manner  in  which  the  portfolio  is
classified or reported;
 
    (l) take any action that is intended or may reasonably be expected to result
in  any of its representations and warranties  set forth in this Agreement being
or becoming untrue in any  material respect at any  time prior to the  Effective
Time,  or in any  of the conditions to  the Merger set forth  in Article VII not
being satisfied or in a violation of any provision of this Agreement, except, in
every case, as may be required by applicable law; or
 
    (m) agree to, or make any commitment to, take any of the actions  prohibited
by this Section 5.2.
 
    5.3    BANCORP  FORBEARANCES.   During  the  period from  the  date  of this
Agreement to the Effective Time,  except as expressly contemplated or  permitted
by  this  Agreement,  Bancorp  shall  not,  and  shall  not  permit  any  of its
Subsidiaries to, without the prior written consent of CBI:
 
    (a) reclassify  any  of its  capital  stock or  make,  declare, or  pay  any
dividend  or make any other distribution on,  any shares of its capital stock or
any securities or obligations, convertible  into or exchangeable for any  shares
of  its capital stock (except for regular quarterly cash dividends at a rate not
in excess  of such  rate as  Bancorp from  time to  time adopts  as its  regular
quarterly dividend rate and except for dividends paid by any of its wholly owned
Subsidiaries or any of their wholly owned Subsidiaries);
 
    (b)  take any action that would prevent or impede the Merger from qualifying
as a reorganization  within the meaning  of Section 368  of the Code;  provided,
however,  that nothing  contained herein shall  limit the ability  of Bancorp to
exercise its rights under the CBI Option Agreement;
 
    (c) take any action that is intended or may reasonably be expected to result
in any of its representations and  warranties set forth in this Agreement  being
or  becoming untrue in any  material respect at any  time prior to the Effective
Time, or in any  of the conditions of  the Merger set forth  in Article VII  not
being satisfied or in a violation of any provision of this Agreement, except, in
every case, as may be required by applicable law;
 
    (d)  take any  action that  would adversely affect  or delay  its ability to
obtain any necessary approvals  of any Regulatory  Agency or other  governmental
authority  required for the  transactions contemplated hereby  or to perform its
covenants and agreements under this Agreement;
 
                                       22
<PAGE>
    (e)  amend  its  articles  of  incorporation  except  with  respect  to  the
establishment of one or more series of preferred stock; or
 
    (f)  agree to, or make any commitment to, take any of the actions prohibited
by this Section 5.3.
 
                                   ARTICLE VI
                             ADDITIONAL AGREEMENTS
 
    6.1  REGULATORY MATTERS.   (a)  Bancorp and  CBI shall promptly prepare  and
file  with the SEC  the Proxy Statement  and Bancorp shall  promptly prepare and
file with the SEC the  S-4, in which the Proxy  Statement will be included as  a
prospectus. Each of Bancorp and CBI shall use all reasonable efforts to have the
S-4 declared effective under the Securities Act as promptly as practicable after
such  filing, and Bancorp and  CBI shall thereafter mail  the Proxy Statement to
their respective shareholders. Bancorp shall also use all reasonable efforts  to
obtain  all necessary state  securities law or "Blue  Sky" permits and approvals
required to carry out the transactions  contemplated by this Agreement, and  CBI
shall furnish all information concerning CBI and the holders of CBI Common Stock
as may be reasonably requested in connection with any such action.
 
    (b)  The  parties  hereto shall  cooperate  with  each other  and  use their
reasonable  best   efforts  to   promptly  prepare   and  file   all   necessary
documentation,  to effect all  applications, notices, petitions  and filings, to
obtain  as  promptly  as  practicable  all  permits,  consents,  approvals   and
authorizations  of  all  third  parties  and  Governmental  Entities  which  are
necessary or  advisable  to consummate  the  transactions contemplated  by  this
Agreement  (including, without limitation,  the Merger), and  to comply with the
terms and conditions of all such permits, consents, approvals and authorizations
of all  such Governmental  Entities. Bancorp  and CBI  shall have  the right  to
review in advance, and to the extent practicable each will consult the other on,
in each case subject to applicable laws relating to the exchange of information,
all  the information relating to CBI or Bancorp,  as the case may be, and any of
their respective Subsidiaries, which appear in any filing made with, or  written
materials submitted to, any third party or any Governmental Entity in connection
with  the  transactions  contemplated  by  this  Agreement.  In  exercising  the
foregoing right, each of the parties hereto shall act reasonably and as promptly
as practicable. The parties hereto agree that they will consult with each  other
with   respect  to  the  obtaining  of  all  permits,  consents,  approvals  and
authorizations of  all  third parties  and  Governmental Entities  necessary  or
advisable to consummate the transactions contemplated by this Agreement and each
party  will  keep  the other  apprised  of  the status  of  matters  relating to
completion of the transactions contemplated herein.
 
    (c) Bancorp  and  CBI shall,  upon  request,  furnish each  other  with  all
information  concerning themselves, their  Subsidiaries, directors, officers and
shareholders and such other matters as may be reasonably necessary or  advisable
in  connection with the Proxy Statement, the S-4 or any other statement, filing,
notice or application  made by  or on  behalf of Bancorp,  CBI or  any of  their
respective Subsidiaries to any Governmental Entity in connection with the Merger
and the other transactions contemplated by this Agreement.
 
    (d)  Bancorp and  CBI shall  promptly advise  each other  upon receiving any
communication from any Governmental Entity whose consent or approval is required
for consummation of the transactions contemplated by this Agreement which causes
such party to believe that there  is a reasonable likelihood that any  Requisite
Regulatory  Approval  will not  be  obtained or  that  the receipt  of  any such
approval will be materially delayed.
 
    6.2  ACCESS  TO INFORMATION.   (a)   Upon reasonable notice  and subject  to
applicable laws relating to the exchange of information, each of Bancorp and CBI
shall,  and shall cause each of their  respective Subsidiaries to, afford to the
officers, employees, accountants, counsel and other representatives of the other
party, access,  during normal  business hours  during the  period prior  to  the
Effective Time, to all its properties, books, contracts, commitments and records
and,  during such period, each  of Bancorp and CBI  shall, and shall cause their
respective Subsidiaries to, make available to the other party (i) a copy of each
report, schedule, registration statement and other document filed or received by
it during
 
                                       23
<PAGE>
such period pursuant to the requirements  of federal securities laws or  federal
or  state banking laws, savings and loan or savings association laws (other than
reports or documents which Bancorp or CBI, as the case may be, is not  permitted
to  disclose under applicable law) and (ii) all other information concerning its
business, properties and personnel as such party may reasonably request. Neither
Bancorp nor CBI nor  any of their respective  Subsidiaries shall be required  to
provide  access to  or to disclose  information where such  access or disclosure
would violate or prejudice the rights of Bancorp's or CBI's, as the case may be,
customers, jeopardize  the  attorney-client  privilege  of  the  institution  in
possession  or  control  of  such  information  or  contravene  any  law,  rule,
regulation, order, judgment, decree, fiduciary duty or binding agreement entered
into prior  to  the  date  of  this Agreement.  The  parties  hereto  will  make
appropriate  substitute disclosure arrangements under circumstances in which the
restrictions of the preceding sentence apply.
 
    (b) Each of  Bancorp and  CBI shall hold  all information  furnished by  the
other  party or any of such  party's Subsidiaries or representatives pursuant to
Section 6.2(a) in confidence to the extent required by, and in accordance  with,
the  provisions  of the  confidentiality  agreements, dated  December  13, 1995,
between Bancorp and CBI (the "Confidentiality Agreements").
 
    (c)  No  investigation  by  either  of  the  parties  or  their   respective
representatives shall affect the representations and warranties of the other set
forth herein.
 
    6.3   SHAREHOLDER APPROVAL.  CBI shall call a meeting of its shareholders to
be held as  soon as practicable  for the  purpose of voting  upon the  requisite
shareholder  approval required in connection with this Agreement and the Merger.
Subject to fiduciary requirements under  applicable law, the board of  directors
of  CBI  shall  recommend  such  approval  to  its  shareholders  and  shall use
reasonable efforts to solicit such approval.
 
    6.4  LEGAL CONDITIONS TO MERGER.   Each of Bancorp and CBI shall, and  shall
cause  its Subsidiaries to,  use their reasonable  best efforts (a)  to take, or
cause to  be  taken, all  actions  necessary,  proper, or  advisable  to  comply
promptly  with all legal requirements which may  be imposed on such party or its
Subsidiaries with respect to the Merger or the Subsidiary Merger and, subject to
the conditions set forth in Article  VII hereof, to consummate the  transactions
contemplated  by this  Agreement and  (b) to obtain  (and to  cooperate with the
other party to obtain) any consent, authorization, order or approval of, or  any
exemption  by,  any  Governmental Entity  and  any  other third  party  which is
required  to  be  obtained  by  CBI  or  Bancorp  or  any  of  their  respective
Subsidiaries  in connection  with the Merger  and the Subsidiary  Merger and the
other transactions contemplated by this Agreement.
 
    6.5  AFFILIATES.   Each of  Bancorp and CBI  shall use its  best efforts  to
cause  each director, executive  officer and other person  who is an "affiliate"
(for purposes of Rule 145 under the Securities Act) of such party to deliver  to
the other party hereto, as soon as practicable after the date of this Agreement,
and  prior to the date of the shareholder  meeting called by CBI to approve this
Agreement, a written agreement, in the form of Exhibit 6.5(a) hereto,  providing
that  such person will  not sell, pledge,  transfer or otherwise  dispose of any
shares of Bancorp Common Stock to be received by such "affiliate" in the Merger,
except in compliance with  the applicable provisions of  the Securities Act  and
the  rules and  regulations thereunder.  Notwithstanding any  other provision of
this Agreement, no certificate  for Bancorp Common Stock  shall be delivered  in
exchange  for CBI Certificates held  by any such "affiliate"  who shall not have
executed and delivered such an agreement.
 
    6.6  STOCK EXCHANGE LISTING OF SHARES.   Bancorp shall use its best  efforts
to  cause the shares  of Bancorp Common Stock  to be issued in  the Merger to be
approved for listing on the NASDAQ Stock Market National Market System,  subject
to official notice of issuance, prior to the Effective Time.
 
                                       24
<PAGE>
    6.7    EMPLOYEE BENEFIT  PLANS.   (a)   Within a  reasonable time  after the
Effective Time, and  subject to  applicable law,  Bancorp shall  provide to  the
employees of Bancorp and its Subsidiaries who formerly were employees of CBI and
its  Subsidiaries employee benefits, including but not limited to pension plans,
thrift plans, management incentive plans, group life plans, accidental death and
dismemberment plans, travel  accident plans, medical  and hospitalization  plans
and  long term  disability plans,  substantially the  same as  those provided to
similarly situated employees of Bancorp and its Subsidiaries. From and after the
Effective Time, and until Bancorp  has accomplished the actions contemplated  by
the  preceding  sentence,  employees of  Bancorp  or its  Subsidiaries  who were
employees of CBI  or its Subsidiaries  immediately prior to  the Effective  Time
shall  be provided with  employee benefits under employee  benefit plans of CBI,
employee benefit plans of Bancorp, or some combination thereof, as Bancorp shall
reasonably deem  appropriate in  order to  accomplish an  orderly transition  of
benefits.  From  and  after the  Effective  Time,  employees of  Bancorp  or its
Subsidiaries who were employees of CBI and its Subsidiaries immediately prior to
the Effective Time shall receive full credit for all purposes under such  plans,
except  the  accrual of  benefits,  for their  length  of service  prior  to the
Effective Time  with  CBI or  any  of  its Subsidiaries  (and  any  predecessors
thereto)  to the extent  such service would  be recognized under  such plans, if
such service was with Bancorp and its Subsidiaries.
 
    (b) Bancorp  agrees to  honor in  accordance with  their terms  (i) all  CBI
Benefit   Plans   and  (ii)   all   contracts,  arrangements,   commitments,  or
understandings described in Section 3.14(a)(i)  disclosed on the CBI  Disclosure
Schedule,  and (iii)  all benefits vested  thereunder as of  the Effective Time;
provided, however,  that  nothing  in  this sentence  shall  be  interpreted  as
preventing  Bancorp  from amending,  modifying  or terminating  any  CBI Benefit
Plans, contracts,  arrangements, commitments  or understandings,  in  accordance
with  their terms. The provisions of this Section 6.7 are intended to be for the
benefit for, and enforceable by, each of the beneficiaries of or parties to such
plans, contracts, arrangements, commitments, and understandings.
 
    (c) CBI shall  cause each outstanding  option to purchase  CBI Common  Stock
held  by directors  or employees  of CBI and  its Subsidiaries  (and any related
stock appreciation right) to  be amended at  or prior to  the Effective Time  so
that  at the Effective Time,  there shall be exchanged  and substituted for each
such option (or stock appreciation right) an option to purchase (or the right to
receive appreciation in market value of) shares of Bancorp Common Stock,  rather
than  CBI Common Stock, in a form  substantially as provided in the Bancorp 1993
Stock Incentive Plan. The  number of shares of  Bancorp Common Stock covered  by
the  substituted  option (and  stock appreciation  right)  shall be  computed by
applying the Exchange Ratio  to the shares  of CBI Common  Stock covered by  the
option (or stock appreciation right), with any resulting fractional shares to be
rounded  down  to the  next whole  share. The  exercise price  per share  of the
substituted option shall be equal to the exercise price per share of CBI  Common
Stock  under the original option  divided by the Exchange  Ratio with the result
rounded up to the  next cent. All such  options (and stock appreciation  rights)
shall  remain in full force and effect  with the same remaining term and without
any acceleration of exercisability  or conferring any right  to receive cash  by
reason  of the Merger, except  as provided by their terms  as in effect prior to
the date of this Agreement. Bancorp  shall cooperate as necessary to permit  the
taking of the actions specified in this paragraph (c).
 
    6.8  INDEMNIFICATION; DIRECTORS' AND OFFICERS' INSURANCE.  (a)  In the event
of  any threatened or  actual claim, action,  suit, proceeding or investigation,
whether civil, criminal  or administrative, including,  without limitation,  any
such claim, action, suit, proceeding or investigation in which any person who is
now, or has been at any time prior to the date of this Agreement, or who becomes
prior  to  the Effective  Time,  a director  or  officer of  CBI  or any  of its
Subsidiaries (the "Indemnified  Parties") is,  or is  threatened to  be, made  a
party  based in whole or in  part on, or arising in whole  or in part out of, or
pertaining to (i) the fact that he is  or was a director or officer of CBI,  any
of  the CBI Subsidiaries  or any of  their respective predecessors  or (ii) this
Agreement, the CBI  Option Agreement,  or any of  the transactions  contemplated
hereby  or thereby, whether in any case  asserted or arising before or after the
Effective Time, the parties hereto agree to cooperate and use their best efforts
to defend against
 
                                       25
<PAGE>
and respond thereto. It is understood and agreed that after the Effective  Time,
Bancorp  shall  indemnify  and  hold  harmless, as  and  to  the  fullest extent
permitted by  law,  each such  Indemnified  Party against  any  losses,  claims,
damages,  liabilities, costs, expenses (including reasonable attorney's fees and
expenses in advance of the final  disposition of any claim, suit, proceeding  or
investigation  to each Indemnified Party to  the fullest extent permitted by law
upon receipt of any  undertaking required by  applicable law), judgments,  fines
and  amounts paid in settlement in connection with any such threatened or actual
claim, action, suit, proceeding  or investigation and in  the event of any  such
threatened  or actual claim, action, suit, proceeding, or investigation (whether
asserted or arising before or after the Effective Time), the Indemnified Parties
may retain  counsel  reasonably satisfactory  to  them after  consultation  with
Bancorp;  provided, however, that (1) Bancorp shall have the right to assume the
defense thereof and  upon such  assumption Bancorp shall  not be  liable to  any
Indemnified  Party for any legal expenses of other counsel or any other expenses
subsequently incurred by any  Indemnified Party in  connection with the  defense
thereof, except that if Bancorp elects not to assume such defense or counsel for
the  Indemnified Parties reasonably  advises the Indemnified  Parties that there
are issues which raise conflicts of interest between Bancorp and the Indemnified
Parties, the Indemnified Parties may  retain counsel reasonably satisfactory  to
them  after consultation with Bancorp, and Bancorp shall pay the reasonable fees
and expenses of such counsel for  the Indemnified Parties, (2) Bancorp shall  be
obligated pursuant to this paragraph to pay for only one firm of counsel for all
Indemnified   Parties,  unless  an  Indemnified   Party  shall  have  reasonably
concluded, based  on the  advice of  counsel,  that in  order to  be  adequately
represented,  separate counsel is necessary for such Indemnified Party, in which
case, Bancorp shall be obligated to  pay for such separate counsel, (3)  Bancorp
shall  not  be liable  for  any settlement  effected  without its  prior written
consent (which consent shall not be unreasonably withheld) and (4) Bancorp shall
have no obligation hereunder  to any Indemnified  Party when and  if a court  of
competent  jurisdiction shall ultimately determine, and such determination shall
have become final  and nonappealable, that  indemnification of such  Indemnified
Party  in the  manner contemplated hereby  is prohibited by  applicable law. Any
Indemnified Party wishing to claim Indemnification under this Section 6.8,  upon
learning  of any  such claim, action,  suit, proceeding  or investigation, shall
notify Bancorp thereof, provided that the failure to so notify shall not  affect
the  obligations of  Bancorp under  this Section 6.8  except to  the extent such
failure to  notify materially  prejudices Bancorp.  Bancorp's obligations  under
this Section 6.8 continue in full force and effect for a period of six (6) years
from  the Effective Time; provided, however,  that all rights to indemnification
in respect of any claim  (a "Claim") asserted or  made within such period  shall
continue  until the  final disposition of  such Claim and  provided further that
Bancorp shall have the right of set-off against any payments required to be made
by Bancorp to an Indemnified Party pursuant to this Section 6.8(a) to the extent
that such Indemnified  Party shall  have received the  indemnification to  which
such  Indemnified  Party is  entitled  from an  insurer  under a  directors' and
officers'  liability   insurance   policy   maintained  by   CBI   or   Bancorp.
Notwithstanding  the foregoing provisions of  this Section 6.8(a), Bancorp shall
have no obligation to indemnify the Indemnified Parties (or advance expenses  to
them)  except to the extent  they would be entitled  to such indemnification (or
advance) under the provisions of  Bancorp's Articles of Incorporation or  Bylaws
or  any agreement to which Bancorp  is a party as in  effect on the date of this
Agreement if such Indemnified Parties had been officers or directors of  Bancorp
at the time of the event giving rise to such indemnification.
 
    (b)  Bancorp shall  use its  best efforts  to cause  the persons  serving as
officers and directors  of CBI  immediately prior to  the Effective  Time to  be
covered  for a period of six (6) years from the Effective Time by the directors'
and officers' liability insurance policy maintained by Bancorp, if any (provided
that Bancorp may substitute therefor policies of at least the same coverage  and
amounts containing terms and conditions that are not less advantageous than such
policy)  with respect to acts or omissions occurring prior to the Effective Time
which were committed by such officers  and directors in their capacity as  such;
provided,  however, that in  no event shall  Bancorp be required  to expend more
than 200 percent of the current amount expended by CBI (the "Insurance  Amount")
to maintain or
 
                                       26
<PAGE>
procure  insurance coverage pursuant hereto and further provided that if Bancorp
is unable to maintain or obtain the insurance called for by this Section 6.8(b),
Bancorp shall use its best efforts to obtain as much comparable insurance as  is
available for the Insurance Amount.
 
    (c)  In  the  event  Bancorp  or  any  of  its  successors  or  assigns  (i)
consolidates with  or  merges  into  any  other person  and  shall  not  be  the
continuing  or surviving corporation or entity  of such consolidation or merger,
or (ii) transfers  or conveys  all or substantially  all of  its properties  and
assets  to any  person, then, and  in each  such case, to  the extent necessary,
proper provision shall  be made so  that the successors  and assigns of  Bancorp
assume the obligations set forth in this section.
 
    (d)  The provisions of this  Section 6.8 are intended  to be for the benefit
of, and shall be enforceable by, each Indemnified Party and his or her heirs and
representatives.
 
    6.9  ADDITIONAL AGREEMENTS.   In case at any  time after the Effective  Time
any  further action is necessary or desirable  to carry out the purposes of this
Agreement (including, without  limitation, any  merger between  a Subsidiary  of
Bancorp  and a Subsidiary of CBI) or to vest the Surviving Corporation with full
title to all properties, assets, rights, approvals, immunities and franchises of
any of the  parties to the  Merger, the  proper officers and  directors of  each
party  to this Agreement  and their respective Subsidiaries  shall take all such
necessary action as may be reasonably requested by, and at the sole expense  of,
Bancorp.  Pending the  Effective Time,  Bancorp and  CBI shall  consult with one
another and  cooperate as  reasonably  requested by  Bancorp to  facilitate  the
integration  of their respective operations as promptly as practicable after the
Effective Time. Such cooperation shall include, if requested, the entering  into
of  merger agreements  between or  among their  respective Subsidiaries  and the
filing of appropriate regulatory applications with respect thereto  (conditioned
upon   the  effectiveness   of  the   Merger),  communicating   with  employees,
consultation regarding material contracts, renewals, and capital commitments  to
be  entered into by CBI and its Subsidiaries, coordination regarding third-party
service agreements with  a view  to providing  common products  and services  as
expeditiously  as practicable following the  Effective Time, making arrangements
for employee  training  prior  to  the  Effective  Time  and  taking  action  to
facilitate an orderly conversion of data processing operations to occur promptly
following  the Effective Time, provided that the cooperation required under this
Section 6.9 shall not be deemed  to require actions that would materially  delay
or impede the Merger.
 
    6.10   ADVICE OF CHANGES.   Bancorp and CBI  shall promptly advise the other
party of any change or event having, or that would be reasonably likely to have,
a Material  Adverse  Effect  on it  or  which  it believes  would  or  would  be
reasonably  likely  to cause  or  constitute a  material  breach of  any  of its
representations, warranties or covenants contained herein.
 
    6.11  DIVIDENDS.  After the date of this Agreement, each of Bancorp and  CBI
shall  coordinate with the other the declaration  of any dividends in respect of
Bancorp Common Stock and CBI Common Stock and the record dates and payment dates
relating thereto, it being the intention  of the parties hereto that holders  of
Bancorp  Common Stock or  CBI Common Stock  shall not receive  two dividends, or
fail to receive one  dividend, for any single  calendar quarter with respect  to
their  shares of Bancorp Common Stock and/or  CBI Common Stock and any shares of
Bancorp Common  Stock any  such  holder receives  in  exchange therefor  in  the
Merger.
 
                                  ARTICLE VII
                              CONDITIONS PRECEDENT
 
    7.1    CONDITIONS TO  EACH PARTY'S  OBLIGATION  TO EFFECT  THE MERGER.   The
respective obligation of each party to effect the Merger shall be subject to the
satisfaction at or prior to the Effective Time of the following conditions:
 
        (a)    SHAREHOLDER  APPROVAL.    This  Agreement  and  the  transactions
    contemplated  hereby shall have  been approved and  adopted by the requisite
    affirmative vote  of  the holders  of  CBI  Common Stock  entitled  to  vote
    thereon.
 
                                       27
<PAGE>
        (b)   NASDAQ LISTING.  The shares  of Bancorp Common Stock that shall be
    issued to the shareholders of CBI upon consummation of the Merger shall have
    been authorized  for listing  on  the Nasdaq  Stock Market  National  Market
    System subject to official notice of issuance.
 
        (c)   OTHER APPROVALS.  All  regulatory approvals required to consummate
    the transactions contemplated  hereby shall have  been obtained without  the
    imposition  of  any conditions  that  are in  Bancorp's  reasonable judgment
    unduly burdensome  and  shall  remain  in full  force  and  effect  and  all
    statutory  waiting periods in  respect thereof shall  have expired (all such
    approvals and the expiration of all  such waiting periods being referred  to
    herein  as  the "Requisite  Regulatory Approvals"),  and all  other material
    consents or approvals  of any third  party required in  connection with  the
    consummation  of the Merger as  set forth in the  CBI Disclosure Schedule or
    Bancorp Disclosure Schedule shall have  been obtained. For purposes of  this
    paragraph,  a divestiture required as a condition to any regulatory approval
    shall not  be  unduly burdensome  if  such divestiture  is  consistent  with
    Department  of Justice and  Federal Reserve Board  guidelines, policies, and
    practices regarding  the merger  of bank  holding companies  that have  been
    utilized  in transactions that have recently been reviewed prior to the date
    of this Agreement.
 
        (d)  FORM S-4.  The S-4 shall have become effective under the Securities
    Act and no  stop order suspending  the effectiveness of  the S-4 shall  have
    been issued and no proceedings for that purpose shall have been initiated or
    threatened by the SEC.
 
        (e)   NO INJUNCTIONS OR RESTRAINTS; ILLEGALITY.  No order, injunction or
    decree issued by  any court  or agency  of competent  jurisdiction or  other
    legal restraint or prohibition (an "Injunction") preventing the consummation
    of  the  Merger  or  any  of the  other  transactions  contemplated  by this
    Agreement  shall  be  in  effect.  No  statute,  rule,  regulation,   order,
    injunction  or  decree  shall  have been  enacted,  entered,  promulgated or
    enforced by  any Governmental  Entity which  prohibits, restricts  or  makes
    illegal consummation of the Merger.
 
        (f)   FEDERAL TAX OPINIONS.   Bancorp shall have  received an opinion of
    Miller, Nash, Wiener,  Hager & Carlsen,  counsel to Bancorp,  and CBI  shall
    have  received an opinion of Wachtell, Lipton, Rosen & Katz, counsel to CBI,
    in form and substance reasonably satisfactory  to Bancorp and CBI, dated  as
    of  the Effective Time,  substantially to the  effect that, on  the basis of
    facts, representations and assumptions set  forth in such opinion which  are
    consistent  with  the state  of facts  existing at  the Effective  Time, the
    Merger will be treated  for Federal income  tax purposes as  part of one  or
    more  reorganizations within the meaning of Section 368 of the Code and that
    accordingly:
 
           (i) No gain or loss will be recognized by Bancorp or CBI as a  result
       of the Merger;
 
           (ii)  No gain or loss  will be recognized by  the shareholders of CBI
       who exchange  their CBI  Common  Stock solely  for Bancorp  Common  Stock
       pursuant to the Merger (except with respect to cash received in lieu of a
       fractional share interest in Bancorp Common Stock); and
 
          (iii)   The  tax  basis  of  the  Bancorp  Common  Stock  received  by
       shareholders who  exchange  all of  their  CBI Common  Stock  solely  for
       Bancorp  Common Stock in the Merger will be  the same as the tax basis of
       the CBI Common  Stock surrendered  in exchange therefor  (reduced by  any
       amount  allocable  to  a  fractional share  interest  for  which  cash is
       received).
 
           In  rendering  such  opinion,  counsel  may  require  and  rely  upon
       representations contained in certificates of officers of Bancorp, CBI and
       others.
 
        (g)  INTENTIONALLY OMITTED
 
    7.2   CONDITIONS TO  OBLIGATIONS OF BANCORP.   The obligation  of Bancorp to
effect the Merger is also subject to the satisfaction or waiver by Bancorp at or
prior to the Effective Time of the following conditions:
 
                                       28
<PAGE>
        (a)  REPRESENTATIONS AND WARRANTIES.  The representations and warranties
    of CBI set forth in this Agreement shall be true and correct in all material
    respects as of the  date of this  Agreement and (except  to the extent  such
    representations  and  warranties speak  as  of an  earlier  date) as  of the
    Closing Date as though  made on and  as of the  Closing Date. Bancorp  shall
    have  received a certificate signed on behalf  of CBI by the Chief Executive
    Officer and the Chief Financial Officer of CBI to the foregoing effect.
 
        (b)  PERFORMANCE OF OBLIGATIONS OF CBI.  CBI shall have performed in all
    material respects all obligations required to be performed by it under  this
    Agreement at or prior to the Closing Date, and Bancorp shall have received a
    certificate  signed on behalf of CBI by  the Chief Executive Officer and the
    Chief Financial Officer of CBI to such effect.
 
        (c)  CBI RIGHTS AGREEMENT.  The rights issued pursuant to the CBI Rights
    Agreement shall not have been become nonredeemable, exercisable, distributed
    or triggered pursuant to the terms of such agreement.
 
    7.3  CONDITIONS TO OBLIGATIONS OF CBI.  The obligation of CBI to effect  the
Merger  is also subject to the satisfaction or  waiver by CBI at or prior to the
Effective Time of the following conditions:
 
        (a)  REPRESENTATIONS AND WARRANTIES.  The representations and warranties
    of Bancorp set  forth in this  Agreement shall  be true and  correct in  all
    material respects as of the date of this Agreement and (except to the extent
    such  representations and warranties speak as of  an earlier date) as of the
    Closing Date as though made  on and as of the  Closing Date. CBI shall  have
    received  a certificate signed  on behalf of Bancorp  by the Chief Executive
    Officer and the Chief Financial Officer of Bancorp to the foregoing effect.
 
        (b)   PERFORMANCE  OF  OBLIGATIONS  OF  BANCORP.    Bancorp  shall  have
    performed  in all material respects all obligations required to be performed
    by it under this Agreement  at or prior to the  Closing Date, and CBI  shall
    have  received  a  certificate signed  on  behalf  of Bancorp  by  the Chief
    Executive Officer and the Chief Financial Officer of Bancorp to such effect.
 
                                  ARTICLE VIII
                           TERMINATION AND AMENDMENT
 
    8.1  TERMINATION.  This Agreement may be terminated at any time prior to the
Effective Time, whether  before or after  approval of the  matters presented  in
connection with the Merger by the shareholders of CBI:
 
        (a) by mutual consent of Bancorp and CBI in a written instrument, if the
    Board  of Directors  of each so  determines by a  vote of a  majority of the
    members of its entire Board;
 
        (b) by  either  the  Board of  Directors  of  Bancorp or  the  Board  of
    Directors of CBI (i) if any Governmental Entity which must grant a Requisite
    Regulatory  Approval has denied  approval of the Merger  and such denial has
    become final and nonappealable or (ii) any Governmental Entity of  competent
    jurisdiction  shall  have issued  a final  nonappealable order  enjoining or
    otherwise prohibiting the consummation  of the transactions contemplated  by
    this Agreement;
 
        (c)  by  either  the Board  of  Directors  of Bancorp  or  the  Board of
    Directors of CBI if the Merger shall not have been consummated on or  before
    January  31, 1997, unless the  failure of the Closing  to occur by such date
    shall be due to the breach by the party seeking to terminate this  Agreement
    of  any representation, warranty, covenant, or other agreement of such party
    set forth herein;
 
        (d) by  either  the  Board of  Directors  of  Bancorp or  the  Board  of
    Directors  of  CBI  (provided that  the  terminating  party is  not  then in
    material breach of any representation, warranty, covenant or other agreement
    contained herein)  if there  shall have  been a  material breach  of any  of
 
                                       29
<PAGE>
    the  covenants or agreements or any of the representations or warranties set
    forth in this Agreement on the part of the other party, which breach is  not
    cured  within forty-five  (45) days  following written  notice to  the party
    committing such breach,  or which  breach, by  its nature,  cannot be  cured
    prior to the Closing; or
 
        (e)  by either Bancorp or the CBI if any approval of the shareholders of
    CBI required for the consummation of the Merger shall not have been obtained
    by reason of the failure to obtain the required vote at a duly held  meeting
    of shareholders or at any adjournment or postponement thereof.
 
    8.2   EFFECT OF TERMINATION.  In  the event of termination of this Agreement
by either  Bancorp or  CBI as  provided  in Section  8.1, this  Agreement  shall
forthwith become void and have no effect, and none of Bancorp, CBI, any of their
respective Subsidiaries or any of the officers or directors of any of them shall
have any liability of any nature whatsoever hereunder, or in connection with the
transactions  contemplated hereby, except (i) Sections 6.2(b), 8.2, 9.2 and 9.3,
shall survive  any  termination  of this  Agreement,  and  (ii)  notwithstanding
anything  to the contrary  contained in this Agreement,  neither Bancorp nor CBI
shall be relieved or released from any liabilities or damages arising out of its
intentional or willful breach of any provision of this Agreement.
 
    8.3  AMENDMENT.  Subject to  compliance with applicable law, this  Agreement
may  be amended by  the parties hereto,  by action taken  or authorized by their
respective Boards of  Directors, at  any time before  or after  approval of  the
matters  presented in  connection with  the Merger  by the  shareholders of CBI;
provided, however, that after any  approval of the transactions contemplated  by
this Agreement by CBI's shareholders, there may not be, without further approval
of such shareholders, any amendment of this Agreement that reduces the amount or
changes  the form of the  consideration to be delivered  to the CBI shareholders
hereunder other than as contemplated by  this Agreement. This Agreement may  not
be  amended except by an  instrument in writing signed on  behalf of each of the
parties hereto.
 
    8.4   EXTENSION; WAIVER.   At  any time  prior to  the Effective  Time,  the
parties  hereto,  by action  taken or  authorized by  their respective  Board of
Directors, may,  to the  extent legally  allowed, (a)  extend the  time for  the
performance of any of the obligations or other acts of the other parties hereto,
(b)  waive  any inaccuracies  in  the representations  and  warranties contained
herein or in any  document delivered pursuant hereto,  and (c) waive  compliance
with  any of the  agreements or conditions  contained herein; provided, however,
that after any approval  of the transactions contemplated  by this Agreement  by
CBI's  shareholders,  there  may  not  be,  without  further  approval  of  such
shareholders, any extension or waiver of  this Agreement or any portion  thereof
which  reduces  the  amount or  changes  the  form of  the  consideration  to be
delivered to the CBI shareholders hereunder  other than as contemplated by  this
Agreement.  Any agreement on the part of a party hereto to any such extension or
waiver shall be valid only if set forth in a written instrument signed on behalf
of such party,  but such  extension or  waiver or  failure to  insist on  strict
compliance  with  an  obligation,  covenant, agreement  or  condition  shall not
operate as a waiver  of, or estoppel  with respect to,  any subsequent or  other
failure.
 
                                   ARTICLE IX
                               GENERAL PROVISIONS
 
    9.1  CLOSING.  Subject to the terms and conditions of this Agreement and the
Merger  Agreement, the closing of the Merger  (the "Closing") will take place at
10 a.m. on a date to be specified  by the parties, which shall be no later  than
five  business days after the satisfaction or waiver (subject to applicable law)
of the latest to occur  of the conditions set forth  in Article VII hereof  (the
"Closing Date").
 
    9.2   NONSURVIVAL OF  REPRESENTATIONS, WARRANTIES, AND  AGREEMENTS.  None of
the representations, warranties, covenants, and agreements in this Agreement  or
in any instrument delivered
 
                                       30
<PAGE>
pursuant  to this  Agreement (other than  pursuant to the  CBI Option Agreement,
which shall  terminate  in accordance  with  its terms),  including  any  rights
arising  out of any  breach of such  representations, warranties, covenants, and
agreements, shall survive  the Effective  Time, except for  those covenants  and
agreements contained herein and therein that by their terms apply in whole or in
part after the Effective Time.
 
    9.3   EXPENSES.   All  costs and expenses  incurred in  connection with this
Agreement and the transactions  contemplated hereby shall be  paid by the  party
incurring such expense.
 
    9.4   NOTICES.  All  notices and other communications  hereunder shall be in
writing and  shall be  deemed given  if delivered  personally, telecopied  (with
confirmation),   mailed  by   registered  or  certified   mail  (return  receipt
requested), or  delivered  by an  express  courier (with  confirmation)  to  the
parties  at the  following addresses (or  at such  other address for  a party as
shall be specified by like notice):
 
        (a) if to U. S. Bancorp, to:
 
            U. S. Bancorp
           111 S.W. Fifth Avenue, T-31
           Portland, Oregon 97204
           Facsimile: (503) 275-3452
           Attention: Gerry B. Cameron
 
            with copies to:
 
            U. S. Bancorp
           111 S.W. Fifth Avenue, T-31
           Portland, Oregon 97204
           Facsimile: (503) 275-3452
           Attention: Dwight V. Board
 
            Miller, Nash, Wiener, Hager & Carlsen
           111 S.W. Fifth Avenue
           Portland, Oregon 97204
           Facsimile: (503) 224-0155
           Attention: John J. DeMott
 
            and
 
        (b) if to California Bancshares, Inc., to:
 
            California Bancshares, Inc.
           100 Park Place, Suite 140
           San Ramon, California 94583
           Facsimile: (510) 838-3990
           Attention: Joseph P. Colmery
 
            with a copy to:
 
            Wachtell, Lipton, Rosen & Katz
           51 West 52nd
           New York, New York 10019
           Facsimile: (212) 403-2000
           Attention: Edward D. Herlihy
 
    9.5   INTERPRETATION.    When a  reference  is  made in  this  Agreement  to
Sections,  Exhibits, or Schedules,  such reference shall  be to a  Section of or
Exhibit or Schedule to this Agreement  unless otherwise indicated. The table  of
contents  and headings  contained in this  Agreement are  for reference purposes
only and shall  not affect  in any  way the  meaning or  interpretation of  this
Agreement. Whenever the words "include," "includes," and "including" are used in
this Agreement, they shall be
 
                                       31
<PAGE>
deemed  to be followed by  the words "without limitation."  No provision of this
Agreement shall be construed to require CBI, Bancorp, or any of their respective
Subsidiaries or affiliates to take any action that would violate any  applicable
law, rule, or regulation. Any exception to the representations and warranties of
CBI  or  Bancorp,  respectively, contained  in  the CBI  Disclosure  Schedule or
Bancorp Disclosure Schedule, as the case may  be, shall be effective only as  to
the  particular  sections  of  this Agreement  specifically  referenced  in such
exception.
 
    9.6  COUNTERPARTS.  This Agreement  may be executed in counterparts, all  of
which  shall be considered one and the same agreement and shall become effective
when counterparts have been signed by each  of the parties and delivered to  the
other  parties, it  being understood  that all  parties need  not sign  the same
counterpart.
 
    9.7  ENTIRE  AGREEMENT.   This Agreement  (including the  documents and  the
instruments  referred to herein) constitutes the entire agreement and supersedes
all prior  agreements  and understandings,  both  written and  oral,  among  the
parties  with respect  to the  subject matter hereof  other than  the CBI Option
Agreement and the Confidentiality Agreements.
 
    9.8   GOVERNING LAW.   This  Agreement shall  be governed  and construed  in
accordance  with  the  laws  of  the State  of  Oregon,  without  regard  to any
applicable conflicts of law rules thereof.
 
    9.9  SEVERABILITY.  Any term or provision of this Agreement that is  invalid
or  unenforceable  in  any  jurisdiction  shall,  as  to  that  jurisdiction, be
ineffective to  the  extent  of  such  invalidity  or  unenforceability  without
rendering  invalid or unenforceable  the remaining terms  and provisions of this
Agreement or affecting  the validity or  enforceability of any  of the terms  or
provision  of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as is enforceable.
 
    9.10  PUBLICITY.   Except  as otherwise required  by applicable  law or  the
rules of the Nasdaq Stock Market, neither Bancorp nor CBI shall, or shall permit
any  of its Subsidiaries to, issue or cause the publication of any press release
or other  public announcement  with respect  to, or  otherwise make  any  public
statement  concerning, the  transactions contemplated by  this Agreement without
the consent  of  the  other  party, which  consent  shall  not  be  unreasonably
withheld.
 
    9.11   ASSIGNMENT.  Neither this Agreement nor any of the rights, interests,
or obligations  shall be  assigned by  any  of the  parties hereto  (whether  by
operation  of law or otherwise)  without the prior written  consent of the other
parties. Subject to the preceding sentence, this Agreement will be binding upon,
inure to the benefit of, and be enforceable by the parties and their  respective
successors  and assigns.  Except as  otherwise specifically  provided in Section
6.7(b) and  Section 6.8  hereof,  this Agreement  (including the  documents  and
instruments  referred to herein) is not intended to confer upon any person other
than the parties hereto any rights or remedies hereunder.
 
    IN WITNESS WHEREOF,  each of  the parties has  caused this  Agreement to  be
executed  by their respective officers thereunto  duly authorized as of the date
first above written.
 
<TABLE>
<S>                                           <C>
                                              U. S. BANCORP
 
Attest:  /s/ John J. DeMott                   By:    /s/ Gerry B. Cameron
                                              -------------------------------------------
- ------------------------------------------    Title:  Chairman and Chief Executive Officer
        Secretary
 
                                              CALIFORNIA BANCSHARES, INC.
 
Attest:  /s/ Diane Mietzel                    By:    /s/ Joseph P. Colmery
                                              -------------------------------------------
- ------------------------------------------    Title:  President and Chief Executive
                                              Officer
</TABLE>
 
                                       32
<PAGE>
                                                                      APPENDIX 2
 
                       [GOLDMAN, SACHS & CO. LETTERHEAD]
 
CONFIDENTIAL
- ----------------
 
April   , 1996
 
Board of Directors
California Bancshares, Inc.
100 Park Place, Suite 140
San Ramon, CA 94583
 
Gentlemen:
 
    You  have requested  our opinion as  to the  fairness to the  holders of the
outstanding shares of Common Stock, par value $2.50 per share (the "Shares"), of
California Bancshares, Inc. (the "Company") of the exchange ratio of 0.95 shares
of Common Stock, par value $5.00 per share, of U. S. Bancorp to be received  for
each  Share  (the  "Exchange  Ratio")  pursuant  to  the  merger  (the "Merger")
contemplated by the Restated Agreement and  Plan of Merger dated as of  February
11, 1996 between U. S. Bancorp and the Company (the "Agreement").
 
    Goldman,  Sachs  &  Co.  as  part of  its  investment  banking  business, is
continually engaged  in the  valuation  of businesses  and their  securities  in
connection  with mergers and acquisitions, negotiated underwritings, competitive
biddings, secondary  distributions of  listed and  unlisted securities,  private
placements  and  valuations for  estate, corporate  and  other purposes.  We are
familiar with the Company, having performed investment banking services for  the
Company  from  time  to  time  and having  acted  as  its  financial  advisor in
connection with, and have  participated in certain  of the negotiations  leading
to,  the Agreement. We also have provided certain investment banking services to
U. S. Bancorp from time to time including, in 1995, acting as co-manager for  U.
S.  Bancorp's $300 million  subordinated debt issue,  and may provide investment
banking services to U. S. Bancorp in the future.
 
    In connection with this opinion, we  have reviewed, among other things,  the
Agreement;  the Registration  Statement on  Form S-4  (No. 33-       )  of U. S.
Bancorp and the Proxy Statement/ Prospectus contained therein; Annual Reports to
Stockholders and Annual Reports on Form 10-K of the Company and of U. S. Bancorp
for the  five  years  ended  December  31,  1995;  certain  interim  reports  to
stockholders  and Quarterly  Reports on Form  10-Q of  the Company and  of U. S.
Bancorp; certain other communications from the Company and from U. S. Bancorp to
their respective  stockholders  and  certain  internal  financial  analyses  and
forecasts  for  the  Company prepared  by  its management  and  certain internal
financial analyses for U.  S. Bancorp prepared by  its management. We also  have
held discussions with members of the senior managements of the Company and U. S.
Bancorp  regarding  their  past  and  current  business  operations,  regulatory
relations,  financial  condition  and  future  prospects  of  their   respective
companies. In addition, we have reviewed the reported price and trading activity
for  the Shares and U.  S. Bancorp Common Stock,  compared certain financial and
stock market  information  for  the  Company and  U.  S.  Bancorp  with  similar
information  for certain  other companies the  securities of  which are publicly
traded, reviewed the financial terms of certain recent business combinations  in
the  banking  industry  specifically  and  in  other  industries  generally  and
performed such other studies and analyses as we considered appropriate.
 
    We have  relied  without  independent verification  upon  the  accuracy  and
completeness  of all of the  financial and other information  reviewed by us for
purposes of this opinion. We are not experts in the evaluation of loan and lease
portfolios for the  purposes of  assessing the  adequacy of  the allowances  for
losses  with  respect thereto  and have  assumed, with  your consent,  that such
allowances for  each of  the Company  and U.  S. Bancorp  are in  the  aggregate
adequate    to    cover    all    such   losses.    In    addition,    we   have
<PAGE>
not reviewed  the  individual credit  files  nor  have we  made  an  independent
evaluation  or appraisal of the  assets and liabilities of  the Company or U. S.
Bancorp or any of  their subsidiaries and  we have not  been furnished with  any
such evaluation or appraisal.
 
    Based upon and subject to the foregoing and based upon such other matters as
we  consider relevant, it is our opinion that as of the date hereof the Exchange
Ratio pursuant to the Agreement is fair to holders of the Shares.
 
Very truly yours,

<PAGE>
                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

          ORS 60.367, a section of the Oregon Business Corporation Act (the
"Act"), provides that any director held liable for an unlawful distribution in
violation of ORS 60.367 is entitled to contribution from (i) every other
director who voted for or assented to the distribution without complying with
the applicable statutory standards of conduct and (ii) each shareholder for the
amount the shareholder accepted knowing the distribution was made in violation
of the Act or the corporation's articles of incorporation.

          Under Sections 60.387 to 60.414 of the Act, a person who is made a
party to a proceeding because such person is or was an officer or director of a
corporation (an "Indemnitee") shall be indemnified by the corporation (unless
the corporation's articles of incorporation provide otherwise) against
reasonable expenses incurred by the Indemnitee in connection with the proceeding
if the Indemnitee is wholly successful on the merits or otherwise or if ordered
by a court of competent jurisdiction.  In addition, under said sections, a
corporation is permitted to indemnify an Indemnitee against liability incurred
in a proceeding if (i) the Indemnitee's conduct was in good faith and in a
manner he or she reasonably believed was in the corporation's best interests or
at least not opposed to its best interests, (ii) the Indemnitee had no
reasonable cause to believe his or her conduct was unlawful if the proceeding
was a criminal proceeding, (iii) the Indemnitee was not adjudged liable to the
corporation if the proceeding was by or in the right of the corporation (in
which case indemnification is limited to the Indemnitee's reasonable expenses in
connection with the proceeding), and (iv) the Indemnitee was not adjudged liable
on the basis that he or she improperly received a personal benefit.

          Article VI of the Registrant's Articles of Incorporation contains the
following provision:

          "A.  The Corporation shall indemnify each of its directors and
     officers to the fullest extent permissible under the Oregon Business
     Corporation Act, as the same exists or may hereafter be amended,
     against all expense, liability, and loss (including, without
     limitation, attorney fees) incurred or suffered by such person by
     reason of or arising from the fact that such person is or was a
     director or officer of the Corporation, or is or was serving at the
     request of the Corporation as a director, officer, partner, trustee,
     employee, or agent of another foreign or domestic corporation,
     partnership, joint venture, trust, employee benefit plan, or other
     enterprise, and such indemnification shall continue as to a person who
     has ceased to be a director or officer and shall inure to the benefit
     of his or her heirs, executors, and administrators.  The
     indemnification provided in this paragraph A shall not be exclusive of
     any other rights to which any person may be entitled under any
     statute, bylaw, agreement, resolution of shareholders or directors,
     contract, or otherwise."

          The Registrant has entered into an indemnification agreement with each
of its directors.  Each such agreement provides that the Registrant will
indemnify the director (i) to the full extent authorized or permitted by the Act
or any other applicable statute or the Registrant's Articles of Incorporation or
Bylaws or any amendment thereof and (ii) against any obligation to pay a
judgment, settlement, penalty, fine or reasonable expenses, including attorney
fees (any of the foregoing, a "Liability") incurred in connection with any claim
(as defined), including a claim by or in


                                     II - 1

<PAGE>

the right of the Registrant; provided that no indemnity shall be paid by the
Registrant (A) if a final decision by a court having jurisdiction shall
determine that such indemnification is unlawful, (B) on account of acts or
omissions by the director which are finally adjudged to have been not in good
faith or to have involved intentional misconduct or a knowing violation of law
or (C) on account of Liability under Section 16(b) of the Exchange Act or any
similar provision of federal or state statutory law.

          Each such agreement also provides that the Registrant will maintain in
effect, as long as the director continues to serve in such capacity and
thereafter so long as he or she is subject to any possible claim, directors' and
officers' liability insurance coverage at least comparable to the coverage
provided at the date the agreement was entered into unless such insurance is not
reasonably available or the premium cost is substantially disproportionate to
the amount or scope of coverage.  In the event the Registrant does not maintain
such insurance coverage, the Registrant agrees to indemnify the director to the
full extent of the coverage in effect at the date the agreement was entered
into.

          The Registrant maintains directors' and officers' liability insurance
under which the Registrant's directors and officers are insured against loss (as
defined) as a result of claims brought against them for their wrongful acts in
such capacities.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

          (a)  The exhibits to this Registration Statement required by Item 601
of Regulation S-K are listed in the accompanying index to exhibits.

          (b)  Financial Statement Schedules.  None.

          (c)  An opinion of Goldman Sachs & Co. dated the date of the Proxy
Statement/Prospectus contained herein is set forth as Appendix 2 thereto.

ITEM 22.  UNDERTAKINGS.

          (a)  The Registrant hereby undertakes:

               (1)  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;

                    (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;

                    (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.

               (2)  That, for the purpose of determining any liability under the
     Securities Act, 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 the
     initial bona fide offering thereof.


                                     II - 2

<PAGE>

               (3)  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.

          (b)  The undersigned Registrant hereby undertakes that, for purposes
of determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
Act (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to Section 15(d) of the Exchange Act) 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.

          (c)  Insofar as indemnification for liabilities arising under the
Securities Act 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 SEC such indemnification
is against public policy as expressed in the Securities Act and is, 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 whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.

          (d)  The undersigned Registrant hereby undertakes to respond to
requests for information that is incorporated by reference into the prospectus
pursuant to Items 4, 10(b), 11, or 13 of Form S-4, 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.

          (e)  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
included in the Registration Statement when it became effective.

          (f) (1) 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.

          (2)  The Registrant undertakes that every prospectus (i) that is filed
pursuant to paragraph (1) immediately preceding, or (ii) that purports to meet
the requirements of Section 10(a)(3) of the Securities Act 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, 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 the initial
bona fide offering thereof.


                                     II - 3

<PAGE>

                                   SIGNATURES

          Pursuant to the requirements of the Securities Act, the Registrant has
duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Portland, State of
Oregon, on the 10th day of April, 1996.

                                     U. S. BANCORP
                                     (Registrant)


                                     By DWIGHT V. BOARD
                                        -------------------------
                                        Dwight V. Board
                                        Executive Vice President


          Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed by the following persons in the capacities indicated
on the 10th day of April, 1996.

               Signature                            Title
               ---------                            -----

1.   Principal Executive Officer
     and Director:

            GERRY B. CAMERON*                Chairman of the Board and
     ------------------------------            Chief Executive Officer
          Gerry B. Cameron                     and Director


2.   Principal Financial and
     Accounting Officer:

            STEVEN P. ERWIN*                 Executive Vice President
     -------------------------------           and Chief Financial
          Steven P. Erwin                      Officer

3.   A Majority of the Board of Directors:

            HARRY BETTIS*
            FRANKLIN G. DRAKE*
            ROBERT L. DRYDEN*
            JOHN B. FERY*
            JOSHUA GREEN III*
            DANIEL R. NELSON*
            ALLEN T. NOBLE*
            PAUL A. REDMOND*
            N. STEWART ROGERS*
            BENJAMIN R. WHITELEY*

*By  DWIGHT V. BOARD
     ------------------------------
     Dwight V. Board, attorney-in-fact



                                     II - 4

<PAGE>

                                INDEX TO EXHIBITS


Exhibit No.         Exhibit
- ----------          -------

   2                Restated Agreement and Plan of Merger between the Registrant
                    and California Bancshares, Inc., dated as of February 11,
                    1996 (included in Part I as Appendix 1 to the Proxy
                    Statement/Prospectus included in this Registration
                    Statement).  Exhibit 6.5(a) to Appendix 1 to the Proxy
                    Statement/Prospectus specifying the form of letter to be
                    executed by certain affiliates and the Disclosure Schedules
                    are omitted and will be furnished supplementally to the SEC
                    upon its request.

   4.1              The Registrant has incurred long-term indebtedness as to
                    which the amount involved is less than ten percent of the
                    total assets of the Registrant and its subsidiaries on a
                    consolidated basis.  The Registrant agrees to furnish copies
                    of the instruments relating to such indebtedness to the SEC
                    upon request.

   4.2              Restated Articles of Incorporation of the Registrant, as
                    amended.  Incorporated by reference to Exhibit 4.2 to the
                    registrant's Registration Statement on Form S-4
                    (No. 33-62067).

   4.3              Bylaws of the Registrant, as amended February 15, 1996.
                    Incorporated by reference to Exhibit 3.2 to the Registrant's
                    Form 10-K for the year ended December 31, 1995.

   5                Opinion of Miller, Nash, Wiener, Hager & Carlsen regarding
                    the securities being registered.

   8.1              Opinion of Miller, Nash, Wiener, Hager & Carlsen as to
                    certain federal income tax matters.

   8.2              Opinion of Wachtell, Lipton, Rosen & Katz as to certain
                    federal income tax matters.

  10.1              Stock Option Agreement, dated as of February 12, 1996,
                    between U. S. Bancorp and California Bancshares, Inc.

  10.2              Employment Agreement, dated as of February 11, 1996, 
                    between the Registrant, California Bancshares, Inc., and 
                    Joseph P. Colmery.

  23.1              Consent of Coopers & Lybrand L.L.P., with respect to
                    financial statements of West One Bancorp.

  23.2              Consent of Deloitte & Touche LLP with respect to financial
                    statements of the Registrant.

  23.3              Consent of KPMG Peat Marwick LLP with respect to financial
                    statements of California Bancshares, Inc.

  23.4              Consent of Miller, Nash, Wiener, Hager & Carlsen.  Contained
                    in Exhibit 5.


                                     II - 5

<PAGE>

Exhibit No.         Exhibit
- ----------          -------

  23.5              Consent of Miller, Nash, Wiener, Hager & Carlsen. Contained
                    in Exhibit 8.1.

  23.6              Consent of Wachtell, Lipton, Rosen & Katz. Contained in
                    Exhibit 8.2.

  23.7              Consent of Goldman, Sachs & Co.

  24                Power of attorney of certain officers and directors of the
                    Registrant.

  99.1              Form of proxy of California Bancshares, Inc.


_________________________________

Other exhibits listed in Item 601 of Regulation S-K are not applicable.


                                     II - 6



<PAGE>


                      [MILLER, NASH, WIENER,
                   HAGER & CARLSEN LETTERHEAD]

                          April 10, 1996

                                                        Exhibit 5

U. S. Bancorp
111 S.W. Fifth Avenue
Portland, Oregon  97204

         Subject:  Registration Statement on Form S-4


Ladies and Gentlemen:

         Reference is made to the registration statement on Form S-4 (the 
"Registration Statement") being filed by U. S. Bancorp, an Oregon 
corporation (the "Company"), with the Securities and Exchange Commission 
for the purpose of registering under the Securities Act of 1933, as amended 
(the "Securities Act"), 10,202,939 shares of the Company's common stock, $5 
par value (the "Shares"), to be issued in connection with the merger (the 
"Merger") between the Company and California Bancshares, Inc., as described 
in the Registration Statement.

         We have examined originals or copies, certified or otherwise 
identified to our satisfaction, of such corporate records, certificates of 
public officials, and other documents as we have deemed necessary or relevant 
as a basis for our opinion set forth herein.

         Based on the foregoing, it is our opinion that:

         1.   The Company is a corporation duly organized and validly 
     existing under the laws of the state of Oregon.

         2.   When the Shares have been issued in the Merger in the manner
     contemplated by the Registration Statement, while the Registration
     Statement is effective and in compliance with applicable state securities
     laws, the Shares will be validly issued, fully paid, and nonassessable.

         We consent to the filing of this opinion as an exhibit to the 
Registration Statement and to the reference to us under the caption "Legal 
Opinions" in the Proxy Statement/Prospectus forming a part of the 
Registration Statement.  In giving this consent, we do not thereby admit that 
we are in the category of persons whose consent is required under Section 7 
of the Securities Act.

                        Very truly yours,

                        /s/ MILLER, NASH, WIENER, HAGER & CARLSEN



<PAGE>


                      [MILLER, NASH, WIENER,
                   HAGER & CARLSEN LETTERHEAD]


                          April 10, 1996

                                                      EXHIBIT 8.1

U. S. Bancorp
111 S.W. Fifth Avenue
Portland, Oregon  97204



Ladies and Gentlemen:

          You have requested our opinion regarding the material
U. S. federal income tax consequences of the proposed merger (the
"Merger") of California Bancshares, Inc. ("CBI") with and into
U. S. Bancorp.  Capitalized terms not otherwise defined in this
letter have the meanings given them in the Proxy
Statement/Prospectus (the "Proxy Statement") of CBI and U. S.
Bancorp which constitutes a part of the Registration Statement on
Form S-4 in respect of the shares of U. S. Bancorp Common Stock
to be issued in connection with the Merger.  This opinion is
delivered in accordance with the requirements of Item 601(b)(8)
of Regulation S-K under the Securities Act.

          In rendering our opinion, we have reviewed the Merger
Agreement and the Proxy Statement and such other materials as we
have deemed necessary or appropriate as a basis for our opinion. 
We have relied, with the consent of U. S. Bancorp and CBI, upon
certain representations contained, respectively, in
representation letters given us by U. S. Bancorp and CBI (copies
of which are attached to this opinion).  We have also assumed
that the transactions contemplated by the Merger Agreement will
be consummated in accordance with the Merger Agreement and as
described in the Proxy Statement.  In addition, we have
considered the applicable provisions of the Internal Revenue Code
of 1986, as amended, Treasury Regulations, pertinent judicial
authorities, rulings of the Internal Revenue Service, and such
other authorities as we have considered relevant.


<PAGE>

U.S. Bancorp                 - 2 -                April 10, 1996


          Based upon the foregoing, it is our opinion that, under
presently applicable law, for federal income tax purposes the
Merger will constitute a reorganization within the meaning of
Section 368(a) of the Code.  Accordingly, it is our opinion that
the material federal income tax consequences of the Merger will
be:

          1.  No gain or loss will be recognized by U. S. Bancorp
     or by CBI as a result of the Merger;
 
          2.  No gain or loss will be recognized by CBI
     stockholders upon their exchange of CBI Common Stock for
     U. S. Bancorp Common Stock, except that a CBI shareholder
     who receives cash proceeds in lieu of a fractional share
     interest in U. S. Bancorp Common Stock will recognize gain
     or loss equal to the difference between such proceeds and
     the tax basis allocated to the fractional share interest,
     and such gain or loss will constitute capital gain or loss
     if such stockholder's CBI Common Stock with respect to which
     gain or loss is recognized is held as a capital asset at the
     Effective Time;
 
          3.  The tax basis of the U. S. Bancorp Common Stock
     received by a CBI stockholder who exchanges CBI Common Stock
     for U. S. Bancorp Common Stock will be the same as the
     stockholder's tax basis in the CBI Common Stock surrendered
     in exchange therefor; and
 
          4.  The holding period of the U. S. Bancorp Common
     Stock received by a CBI stockholder will include the period
     during which the CBI Common Stock surrendered in exchange
     was held (provided that the CBI Common Stock was held by the
     CBI stockholder as a capital asset at the Effective Time).

          In addition, it is our opinion that the statements
regarding income tax consequences made under the captions
"Summary--Tax and Accounting Treatment of the Merger" and "The
Merger--Certain Federal Income Tax Consequences" in the Proxy
Statement, to the extent that they constitute matters of law or
legal conclusions, are correct in all material respects.

          Our opinion may not be applicable to CBI stockholders
who received their CBI Common Stock pursuant to the exercise of
employee stock options or otherwise as compensation or who are
not citizens or residents of the United States.

          This opinion is being furnished in connection with the
Registration Statement.  You may rely upon and refer to the

<PAGE>

U.S. Bancorp                 - 3 -                April 10, 1996


foregoing opinion in the Registration Statement.  Any variation
or difference in the facts from those set forth or assumed either
in this opinion or in the Registration Statement may affect the
conclusions stated in this opinion.

          We hereby consent to the use of our name under the
caption "The Merger--Certain Federal Income Tax Consequences" in
the Proxy Statement and to the filing of this opinion as an
Exhibit to 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 Commission thereunder.

                              Very truly yours,



                              /s/ MILLER, NASH, WIENER,
                                   HAGER & CARLSEN



<PAGE>

           [WACHTELL, LIPTON, ROSEN & KATZ LETTERHEAD]

                          April 10, 1996              EXHIBIT 8.2

California Bancshares, Inc.
100 Park Place, Suite 140
San Ramon, California 94583

Ladies/Gentlemen:

         We have acted as special counsel to California
Bancshares, Inc., a Delaware corporation ("CBI"), in connection
with the proposed merger (the "Merger") of CBI with and into
U. S. Bancorp, an Oregon corporation ("USB"), upon the terms and
conditions set forth in the Restated Agreement and Plan of Merger
(the "Agreement") dated as of February 11, 1996, by and between
USB and CBI.  At your request, and pursuant to the Agreement, we
are rendering our opinion concerning the material federal income
tax consequences of the Merger.

         For purposes of the opinion set forth below, we have
relied, with the consent of USB and the consent of CBI, upon the
accuracy and completeness of the statements and representations
(which statements and representations we have neither
investigated nor verified) contained, respectively, in the
certificates of the officers of USB and of CBI (copies of which
are attached hereto and which are incorporated herein by
reference), and we have assumed that such certificates will be
complete and accurate as of the Effective Time.  Any capitalized
term used and not defined herein has the meaning given to it in
the Proxy Statement-Prospectus of USB and CBI, as amended through
the date hereof (the "Proxy Statement-Prospectus").

         We have also assumed that the transactions contemplated
by the Agreement will be consummated in accordance with the
Agreement and as described in the Proxy Statement-Prospectus and
that the Merger will qualify as a statutory merger under the
applicable laws of the States of Delaware and Oregon.

         Based upon and subject to the foregoing, it is our
opinion that, under presently applicable law, the Merger will
constitute a reorganization within the meaning of Section 368(a)
of the Internal Revenue Code of 1986, as amended, and that
accordingly the following will be all the material federal income
tax consequences of the Merger:

  (i)    No gain or loss will be recognized by the stockholders
         of CBI upon the conversion of their shares of CBI
         Common Stock into shares of USB Common Stock pursuant
         to the terms of the Merger to the extent of such
         conversion.


<PAGE>


California Bancshares, Inc.    - 2 -               April 10, 1996

  (ii)   The tax basis of the shares of USB Common Stock into
         which shares of CBI Common Stock are converted pursuant
         to the Merger, including any fractional interest, will
         be the same as the basis of the shares of CBI Common
         Stock exchanged therefor.

  (iii)  The holding period for shares of USB Common Stock,
         including any fractional interest, into which shares of
         CBI Common Stock are converted will include the period
         that such shares of CBI Common Stock were held by the
         holder, provided such shares were a capital asset of
         the holder.

  (iv)   The receipt of cash in lieu of a fractional share of
         USB Common Stock will be treated as if a CBI
         shareholder were issued such stock and then had such
         stock redeemed, and will generally result in
         recognition of gain or loss equal to the difference
         between the amount of cash received and the holder's
         basis in the fractional share, as determined above. 
         The gain or loss will be capital gain or loss if the
         shares of CBI Common Stock were held as capital assets,
         and will be long-term capital gain or loss if the
         holding period for the fractional shares, as determined
         above, was more than one year.

  (v)    No gain or loss will be recognized by USB or CBI solely
         as a result of the Merger.

         This opinion may not be applicable to CBI stockholders
who received their CBI Common Stock pursuant to the exercise of
employee stock options or otherwise as compensation or who are
not citizens or residents of the United States.

         We hereby consent to the filing of this opinion with 
the Securities and Exchange Commission as an Exhibit to the 
Registration Statement on Form S-4 in respect of the shares of 
USB Common Stock to be issued in connection with the Merger, 
and to the reference to this opinion under the caption "The 
Merger--Certain Federal Income Tax Consequences" and elsewhere 
in the Proxy Statement-Prospectus included therein.  In giving 
such consent, we do not hereby admit that we are in the 
category of persons whose consent is required under Section 7 
of the Securities Act of 1933, as amended.

                             Very truly yours,

                             /s/ WACHTELL, LIPTON, ROSEN & KATZ


<PAGE>

                                                                    Exhibit 10.1
                             STOCK OPTION AGREEMENT

                  THE TRANSFER OF THIS AGREEMENT IS SUBJECT TO
                   CERTAIN PROVISIONS CONTAINED HEREIN AND TO
                          RESALE RESTRICTIONS UNDER THE
                       SECURITIES ACT OF 1933, AS AMENDED


     STOCK OPTION AGREEMENT, dated February 12, 1996, between CALIFORNIA
BANCSHARES, INC., a Delaware corporation ("Issuer"), and U. S. BANCORP, an
Oregon corporation ("Grantee").


                              W I T N E S S E T H:

     WHEREAS, Grantee and Issuer have entered into an Agreement and Plan of
Merger dated February 11, 1996 (the "Merger Agreement"); and

     WHEREAS, as a condition to Grantee's entering into the Merger Agreement and
in consideration therefor, Issuer has agreed to grant Grantee the Option (as
hereinafter defined):

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements set forth herein and in the Merger Agreement, the parties hereto
agree as follows:

     1.   (a)  Issuer hereby grants to Grantee an unconditional, irrevocable
option (the "Option") to purchase, subject to the terms hereof, up to 2,002,076
fully paid and nonassessable shares of Issuer's Common Stock, $2.50 par value
per share ("Common Stock"), at a price of $25.75 per share (the "Option Price");
provided further that in no event shall the number of shares of Common Stock for
which this Option is exercisable exceed 19.9 percent of the Issuer's issued and
outstanding shares of Common Stock.  The number of shares of Common Stock that
may be received upon the exercise of the Option and the Option Price are subject
to adjustment as herein set forth.

          (b)  In the event that any additional shares of Common Stock are
issued or otherwise become outstanding after the date of this Agreement (other
than pursuant to this Agreement), the number of shares of Common Stock subject
to the Option shall be increased so that, after such issuance, it equals
19.9 percent of the number of shares of Common Stock then issued and outstanding
without giving effect to any shares subject or issued pursuant to the Option.
Nothing contained in this Section 1(b) or elsewhere in this Agreement shall be
deemed to authorize Issuer or Grantee to breach any provision of the Merger
Agreement.

     2.   (a)  The Holder (as hereinafter defined) may exercise the Option, in
whole or in part, and from time to time, if, but only if, both an Initial
Triggering Event (as hereinafter defined) and a Subsequent Triggering Event (as
hereinafter defined) shall have occurred prior to the occurrence of an Exercise
Termination Event (as hereinafter defined), provided that the Holder shall have
sent the written notice of such exercise (as provided in subsection (e) of this
Section 2) within 90 days following such Subsequent Triggering Event.  Each of
the following shall be an Exercise Termination Event:  (i) the Effective Time of
the Merger; (ii) termination of the Merger Agreement in accordance with the
provisions thereof if such termination occurs prior to the occurrence of an
Initial Triggering Event except a termination by Grantee pursuant to
Section 8.1(d) of the Merger Agreement (unless the breach by Issuer giving rise
to such right of termination is non-volitional); (iii) the passage of 12 months
after termination of the Merger Agreement if such termination follows the
occurrence of an Initial Triggering Event or is a termination by Grantee
pursuant to Section 8.1(d) of the Merger Agreement (unless the breach by Issuer
giving rise to such right of termination is non-volitional) (provided that if an
Initial Triggering Event continues or occurs beyond such termination and prior
to the passage of such 12-month period, the Exercise Termination Event shall be
12 months from the expiration of the Last Triggering Event but in no event more
than 18 months after such termination) or (iv) the third anniversary of the date
hereof.  The "Last Triggering Event" shall mean the last Initial Triggering
Event to expire.  The term "Holder" shall mean the holder or holders of the
Option.

     (b)  The term "Initial Triggering Event" shall mean any of the following
events or transactions occurring after the date hereof:


                                      - 1 -

<PAGE>

          (i)  Issuer or any of its Subsidiaries (each an "Issuer
     Subsidiary"), without having received Grantee's prior written consent,
     shall have entered into an agreement to engage in an Acquisition
     Transaction (as hereinafter defined) with any person (the term
     "person" for purposes of this Agreement having the meaning assigned
     thereto in Sections 3(a)(9) and 13(d)(3) of the Securities Exchange
     Act of 1934, as amended (the "1934 Act"), and the rules and
     regulations thereunder) other than Grantee or any of its Subsidiaries
     (each a "Grantee Subsidiary") or the Board of Directors of Issuer
     shall have recommended that the stockholders of Issuer approve or
     accept any such Acquisition Transaction.  For purposes of this
     Agreement, "Acquisition Transaction" shall mean (w) a merger or
     consolidation, or any similar transaction, involving Issuer or any
     Significant Subsidiary (as defined in Rule 1-02 of Regulation S-X
     promulgated by the Securities and Exchange Commission (the "SEC")) of
     Issuer, (x) a purchase, lease, or other acquisition of all or a
     substantial portion of the assets of Issuer or any Significant
     Subsidiary of Issuer, (y) a purchase or other acquisition (including
     by way of merger, consolidation, share exchange or otherwise) of
     securities representing 10 percent or more of the voting power of
     Issuer or any Significant Subsidiary of Issuer, or (z) any
     substantially similar transaction; provided, however, that in no event
     shall any (i) merger, consolidation, or similar transaction involving
     Issuer or any Significant Subsidiary in which the voting securities of
     Issuer outstanding immediately prior thereto continue to represent (by
     either remaining outstanding or being converted into the voting
     securities of the surviving entity of any such transaction) at least
     65 percent of the combined voting power of the voting securities of
     the Issuer or the surviving entity outstanding immediately after the
     consummation of such merger, consolidation, or similar transaction, or
     (ii) any merger, consolidation, purchase, or similar transaction
     involving only the Issuer and one or more of its Subsidiaries or
     involving only any two or more of such Subsidiaries, be deemed to be
     an Acquisition Transaction, provided any such transaction is not
     entered into in violation of the terms of the Merger Agreement;

          (ii) Issuer or any Issuer Subsidiary, without having received
     Grantee's prior written consent, shall have authorized, recommended,
     proposed, or publicly announced its intention to authorize, recommend,
     or propose, to engage in an Acquisition Transaction with any person
     other than Grantee or a Grantee Subsidiary, or the Board of Directors
     of Issuer shall have publicly withdrawn or modified, or publicly
     announced its intent to withdraw or modify, in any manner adverse to
     Grantee, its recommendation that the stockholders of Issuer approve
     the transactions contemplated by the Merger Agreement;

          (iii)     Any person other than Grantee, any Grantee Subsidiary,
     or any Issuer Subsidiary acting in a fiduciary capacity in the
     ordinary course of its business shall have acquired beneficial
     ownership or the right to acquire beneficial ownership of 15 percent
     or more of the outstanding shares of Common Stock (the term
     "beneficial ownership" for purposes of this Option Agreement having
     the meaning assigned thereto in Section 13(d) of the 1934 Act, and the
     rules and regulations thereunder);

          (iv) Any person other than Grantee or any Grantee Subsidiary
     shall have made a bona fide proposal to Issuer or its stockholders by
     public announcement or written communication that is or becomes the
     subject of public disclosure to engage in an Acquisition Transaction;

          (v)  After an overture is made by a third party to Issuer or its
     stockholders to engage in an Acquisition Transaction, Issuer shall
     have breached any covenant or obligation contained in the Merger
     Agreement and such breach (x) would entitle Grantee to terminate the
     Merger Agreement and (y) shall not have been cured prior to the Notice
     Date (as defined below); or

          (vi) Any person other than Grantee or any Grantee Subsidiary,
     other than in connection with a transaction to which Grantee has given
     its prior written consent, shall have filed an application or notice
     with the Federal Reserve Board, or other federal or state bank
     regulatory authority, which application or notice has been accepted
     for processing, for approval to engage in an Acquisition Transaction.


                                      - 2 -

<PAGE>

          (c)  The term "Subsequent Triggering Event" shall mean either of the
following events or transactions occurring after the date hereof:

          (i)  The acquisition by any person of beneficial ownership of
     25 percent or more of the then outstanding Common Stock; or

          (ii) The occurrence of the Initial Triggering Event described in
     clause (i) of subsection (b) of this Section 2, except that
     the percentage referred to in clause (y) shall be 25 percent.

          (d)  Issuer shall notify Grantee promptly in writing of the occurrence
of any Initial Triggering Event or Subsequent Triggering Event (together, a
"Triggering Event"), it being understood that the giving of such notice by
Issuer shall not be a condition to the right of the Holder to exercise the
Option.

          (e)  In the event the Holder is entitled to and 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 shares it
will purchase pursuant to such exercise and (ii) a place and date not earlier
than three business days nor later than 60 business days from the Notice Date
for the closing of such purchase (the "Closing Date"); provided that if prior
notification to or approval of the Federal Reserve Board or any other regulatory
agency is required in connection with such purchase, the Holder shall promptly
file the required notice or application for approval and shall expeditiously
process the same and the period of time that otherwise would run pursuant to
this sentence shall run instead from the date on which any required notification
periods have expired or been terminated or such approvals have been obtained and
any requisite waiting period or periods shall have passed.  Any exercise of the
Option shall be deemed to occur on the Notice Date relating thereto.

          (f)  At the closing referred to in subsection (e) of this Section 2,
the Holder shall pay to Issuer the aggregate purchase price for the shares of
Common Stock purchased pursuant to the exercise of the Option in immediately
available funds by wire transfer to a bank account designated by Issuer,
provided that failure or refusal of Issuer to designate such a bank account
shall not preclude the Holder from exercising the Option.

          (g)  At such closing, simultaneously with the delivery of immediately
available funds as provided in subsection (f) of this Section 2, Issuer shall
deliver to the Holder a certificate or certificates representing the number of
shares of Common Stock purchased by the Holder and, if the Option should be
exercised in part only, a new Option evidencing the rights of the Holder thereof
to purchase the balance of the shares purchasable hereunder, and the Holder
shall deliver to Issuer a copy of this Agreement and a letter agreeing that the
Holder will not offer to sell or otherwise dispose of such shares in violation
of applicable law or the provisions of this Agreement.

          (h)  Certificates for Common Stock delivered at a closing hereunder
may be endorsed with a restrictive legend that shall read substantially as
follows:

          "The transfer of the shares represented by this certificate
          is subject to certain provisions of an agreement between the
          registered holder hereof and Issuer and to resale
          restrictions arising under the Securities Act of 1933, as
          amended.  A copy of such agreement is on file at the
          principal office of Issuer and will be provided to the
          holder hereof without charge upon receipt by Issuer of a
          written request therefor."

It is understood and agreed that:  (i) the reference to the resale restrictions
of the Securities Act of 1933, as amended (the "1933 Act"), in the above legend
shall be removed by delivery of substitute certificate(s) without such reference
if the Holder shall have delivered to Issuer a copy of a letter from the staff
of the SEC, or an opinion of counsel, in form and substance reasonably
satisfactory to Issuer, to the effect that such legend is not required for
purposes of the 1933 Act; (ii) the reference to the provisions to this Agreement
in the above legend shall be removed by delivery of substitute certificate(s)
without such reference if the shares have been sold or transferred in compliance
with the provisions of this Agreement and under circumstances that do not
require the retention of such reference; and (iii) the legend shall be removed
in its entirety if the conditions in the preceding clauses (i) and (ii) are


                                      - 3 -

<PAGE>

both satisfied.  In addition, such certificates shall bear any other legend as
may be required by law.

          (i)  Upon the giving by Holder to Issuer of the written notice of
exercise of the Option provided for under subsection (e) of this Section 2 and
the tender of the applicable purchase price in immediately available funds, the
Holder shall be deemed to be the holder of record of the shares of 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
Common Stock shall not then be actually delivered to the Holder.  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, issue,
and delivery of stock certificates under this Section 2 in the name of the
Holder or its assignee, transferee, or designee.

     3.   Issuer agrees:  (i) that it shall at all times maintain, free from
preemptive rights, sufficient authorized but unissued or treasury shares of
Common Stock so that the Option may be exercised without additional
authorization of Common Stock after giving effect to all other options,
warrants, convertible securities, and other rights to purchase Common Stock;
(ii) that it will not, by charter amendment 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 (x) complying with all premerger notification, reporting, and waiting
period requirements specified in 15 USC Section 18 and regulations promulgated
thereunder and (y) in the event, under the Bank Holding Company Act of 1956, as
amended (the "BHCA"), or the Change in Bank Control Act of 1978, as amended, or
any state banking law, prior approval of or notice to the Federal Reserve Board
or to any state regulatory authority is necessary before the Option may be
exercised, cooperating fully with the Holder in preparing such applications or
notices and providing such information to the Federal Reserve Board or such
state regulatory authority as they may require) in order to permit the Holder to
exercise the Option and Issuer duly and effectively to issue shares of Common
Stock pursuant hereto; and (iv) promptly to take all action provided herein to
protect the rights of the Holder against dilution.

     4.   This Agreement (and the Option granted hereby) are exchangeable,
without expense, at the option of the Holder, 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,
on the same terms and subject to the same condition as are set forth herein, in
the aggregate the same number of shares of Common Stock purchasable hereunder.
The terms "Agreement" and "Option" as used herein include any Stock Option
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.  Any such new Agreement executed and delivered shall constitute
an additional contractual obligation on the part of Issuer, whether or not the
Agreement so lost, stolen, destroyed, or mutilated shall at any time be
enforceable by anyone.

     5.   In addition to the adjustment in the number of shares of Common Stock
that are purchasable upon exercise of the Option pursuant to Section 1 of this
Agreement, the number of shares of Common Stock purchasable upon the exercise of
the Option and the Option Price shall be subject to adjustment from time to time
as provided in this Section 5.  In the event of any change in, or distributions
in respect of, the Common Stock by reason of stock dividends, split-ups,
mergers, recapitalizations, combinations, subdivisions, conversions, exchanges
of shares, distributions on or in respect of the Common Stock that would be
prohibited under the terms of the Merger Agreement, or the like, the type and
number of shares of Common Stock purchasable upon exercise hereof and the Option
Price shall be appropriately adjusted in such manner as shall fully preserve the
economic benefits provided hereunder and proper provision shall be made in any
agreement governing any such transaction to provide for such proper adjustment
and the full satisfaction of the Issuer's obligations hereunder.

     6.   Upon the occurrence of a Subsequent Triggering Event that occurs prior
to an Exercise Termination Event, Issuer shall, at the request of Grantee
delivered within 90 days of such Subsequent Triggering Event (whether on its own
behalf or on behalf of any subsequent holder of this Option (or part thereof) or
any of the shares of Common Stock issued pursuant


                                      - 4 -

<PAGE>

hereto), promptly prepare, file, and keep current a shelf registration statement
under the 1933 Act covering this Option and any shares issued and issuable
pursuant to this Option and shall use its reasonable best efforts to cause such
registration statement to become effective and remain current in order to permit
the sale or other disposition of this Option and any shares of Common Stock
issued upon total or partial exercise of this Option ("Option Shares") in
accordance with any plan of disposition requested by Grantee.  Issuer will use
its reasonable best efforts to cause such registration statement first to become
effective and then to remain effective for such period not in excess of 180 days
from the date such registration statement first becomes effective or such
shorter time as may be reasonably necessary to effect such sales or other
dispositions.  Grantee shall have the right to demand two such registrations.
The foregoing notwithstanding, if, at the time of any request by Grantee for
registration of the Option or Option Shares as provided above, Issuer is in
registration with respect to an underwritten public offering of shares of Common
Stock, and if in the good faith judgment of the managing underwriter or managing
underwriters, or, if none, the sole underwriter or underwriters, of such
offering the inclusion of the Holder's Option or Option Shares would interfere
with the successful marketing of the shares of Common Stock offered by Issuer,
the number of Option Shares otherwise to be covered in the registration
statement contemplated hereby may be reduced; and provided, however, that after
any such required reduction the number of Option Shares to be included in such
offering for the account of the Holder shall constitute at least 25 percent of
the total number of shares to be sold by the Holder and Issuer in the aggregate;
and provided further, however, that if such reduction occurs, then the Issuer
shall file a registration statement for the balance as promptly as practical and
no reduction shall thereafter occur.  Each such Holder shall provide all
information reasonably requested by Issuer for inclusion in any registration
statement to be field hereunder.  If requested by any such Holder in connection
with such registration, Issuer shall become a party to any underwriting
agreement relating to the sale of such shares, but only to the extent of
obligating itself in respect of representations, warranties, indemnities, and
other agreements customarily included in such underwriting agreements for the
Issuer.  Upon receiving any request under this Section 6 from any Holder, Issuer
agrees to send a copy thereof to any other person known to Issuer to be entitled
to registration rights under this Section 6, in each case by promptly mailing
the same, postage prepaid, to the address of record of the persons entitled to
receive such copies.  Notwithstanding anything to the contrary contained herein,
in no event shall Issuer be obligated to effect more than two registrations
pursuant to this Section 6 by reason of the fact that there shall be more than
one Grantee as a result of any assignment or division of this Agreement.

     7.   (a)  Immediately prior to the occurrence of a Repurchase Event (as
defined below), (i) following a request of the Holder, delivered prior to an
Exercise Termination Event, Issuer (or any successor thereto) shall repurchase
the Option from the Holder at a price (the "Option Repurchase Price") equal to
the amount by which (A) the market/offer price (as defined below) exceeds
(B) the Option Price, multiplied by the number of shares for which this Option
may then be exercised and (ii) at the request of the owner of Option Shares from
time to time (the "Owner"), delivered within 90 days of such occurrence (or such
later period as provided in Section 10), Issuer shall repurchase such number of
the Option Shares from the Owner as the Owner shall designate at a price (the
"Option Share Repurchase Price") equal to the market/offer price multiplied by
the number of Option Shares so designated.  The term "market/offer price" shall
mean the highest of the following amounts with respect to the six-month period
immediately preceding the date the Holder gives notice of the required
repurchase of this Option or the Owner gives notice of the required repurchase
of Option Shares, as the case may be (i) the price per share of Common Stock at
which a tender offer or exchange offer therefor has been made, (ii) the price
per share of Common Stock to be paid by any third party pursuant to an agreement
with Issuer, (iii) the highest closing price for shares of Common Stock, or
(iv) in the event of a sale of all or a substantial portion of Issuer's assets,
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 the Holder or the Owner, as the case may be,
divided by the number of shares of Common Stock of Issuer outstanding at the
time of such sale.  In determining the market/offer price, the value of
consideration other than cash shall be determined by a nationally recognized
investment banking firm selected by the Holder or Owner, as the case may be, and
reasonably acceptable to Issuer.  Notwithstanding the foregoing, if the same
person who has participated in a Triggering Event has entered, or after such
Triggering Event has occurred enters, into any agreement or understanding with
Grantee relating to Grantee's rights under this Option or with respect to the
Option Shares or directly or indirectly relating to Issuer, Grantee shall,
notwithstanding the terms of such agreement or understanding, at any time upon
the occurrence of a Subsequent


                                      - 5 -

<PAGE>

Triggering Event of the type set forth in Section 3(d)(i) without Issuer's
approval, recommendation or consent, promptly request that Issuer repurchase the
Option and any Option Shares held by Grantee as provided in this Section 8 and
Issuer shall do so.

          (b)  The Holder and the Owner, as the case may be, may exercise its
right to require Issuer to repurchase the Option and any Option Shares pursuant
to this Section 7 by surrendering for such purpose to Issuer, at its principal
office, a copy of this Agreement or certificates for Option Shares, as
applicable, accompanied by a written notice or notices stating that the Holder
or the Owner, as the case may be, elects to require Issuer to repurchase this
Option and/or the Option Shares in accordance with the provisions of this
Section 7.  Within the latter to occur of (x) five business days after the
surrender of the Option and/or certificates representing Option Shares and the
receipt of such notice or notices relating thereto and (y) the time that is
immediately prior to the occurrence of a Repurchase Event, Issuer shall deliver
or cause to be delivered to Holder the Option Repurchase Price and/or to the
Owner the Option Share Repurchase Price therefor or the portion thereof that
Issuer is not then prohibited under applicable law and regulation from so
delivering.

          (c)  To the extent that Issuer is prohibited under applicable law or
regulation from repurchasing the Option and/or the Option Shares in full, Issuer
shall immediately so notify the Holder and/or the Owner and thereafter deliver
or cause to be delivered, from time to time, to the Holder and/or the Owner, as
appropriate, the portion of the Option Repurchase Price and the Option Share
Repurchase Price, respectively, that it is no longer prohibited from delivering,
within five business days after the date on which Issuer is no longer so
prohibited; provided, however, that if Issuer at any time after delivery of a
notice of repurchase pursuant to paragraph (b) of this Section 7 is prohibited
under applicable law or regulation from delivering to the Holder and/or the
Owner, as appropriate, the Option Repurchase Price and the Option Share
Repurchase Price, respectively, in full (and Issuer hereby undertakes to use its
best efforts to obtain all required regulatory and legal approvals and file any
required notices as promptly as practicable in order to accomplish such
repurchase), the Holder or Owner may revoke its notice of repurchase of 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 Holder
and/or the Owner, as appropriate, that portion of the Option Repurchase Price or
the Option Share Repurchase Price that Issuer is not prohibited from delivering;
and (ii) deliver, as appropriate, either (A) to the Holder, a new Stock Option
Agreement evidencing the right of the Holder 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 Option Repurchase Price less the portion thereof theretofore delivered to
the Holder and the denominator of which is the Option Repurchase Price, or
(B) to the Owner, a certificate for the Option Shares it is then so prohibited
from repurchasing.

          (d)  For purposes of this Section 7, a Repurchase Event shall be
deemed to have occurred (i) upon the consummation of any merger, consolidation,
or similar transaction involving Issuer or any purchase, lease, or other
acquisition of all or a substantial portion of the assets of Issuer, other than
any such transaction which would not constitute an Acquisition Transaction
pursuant to the proviso to Section 2(b)(i) hereof or (ii) upon the acquisition
by any person of beneficial ownership of 50 percent or more of the then
outstanding shares of Common Stock, provided that no such event shall constitute
a Repurchase Event unless a Subsequent Triggering Event shall have occurred
prior to an Exercise Termination Event.  The parties hereto agree that Issuer's
obligations to repurchase the Option or Option Shares under this Section 7 shall
not terminate upon the occurrence of an Exercise Termination Event unless no
Subsequent Triggering Event shall have occurred prior to the occurrence of an
Exercise Termination Event.

     8.   (a)  In the event that prior to an Exercise Termination Event, Issuer
shall enter into 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 and
Issuer shall be the continuing or surviving corporation, but, in connection with
such merger, the then outstanding shares of Common Stock shall be changed into
or exchanged for stock or other securities of any other person or cash or any
other property or the then outstanding shares of Common Stock shall after such
merger represent less than 50 percent of the outstanding voting shares and
voting share equivalents of the merged company, or (iii) to sell or otherwise
transfer all or substantially all of its assets to any


                                      - 6 -

<PAGE>

person, other than Grantee or one of its Subsidiaries, then, and in each such
case, the agreement governing such transaction shall make proper provision so
that the Option shall, upon the consummation of any such transaction and upon
the terms and conditions set forth herein, be converted into, or exchanged for,
an option (the "Substitute Option"), at the election of the Holder, of either
(x) the Acquiring Corporation (as hereinafter defined) or (y) any person that
controls the Acquiring Corporation.

          (b)  The following terms have the meanings indicated:

          (1)  "Acquiring Corporation" shall mean (i) the continuing or
     surviving corporation of a consolidation or merger with Issuer (if
     other than Issuer), (ii) Issuer in a merger in which Issuer is the
     continuing or surviving person, and (iii) the transferee of all or
     substantially all of Issuer's assets.

          (2)  "Substitute Common Stock" shall mean the common stock issued
     by the Issuer of the Substitute Option upon exercise of the Substitute
     Option.

          (3)  "Assigned Value" shall mean the market/offer price, as
     defined in Section 7.

          (4)  "Average Price" shall mean the average closing price of a
     share of the Substitute Common Stock for the one year immediately
     preceding the consolidation, merger, or sale in question, but in no
     event higher than the closing price of the shares of Substitute Common
     Stock on the date 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 the person merging into Issuer or by any company which
     controls or is controlled by such person, as the Holder may elect.

          (c)  The Substitute Option shall have the same terms as the Option,
provided, that if the terms of the Substitute Option cannot, for legal reasons,
be the same as the Option, such terms shall be as similar as possible and in no
event less advantageous to the Holder.  The issuer of the Substitute Option
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 Substitute Common Stock as is equal to the Assigned Value multiplied
by the number of shares of Common Stock for which the Option is then
exercisable, divided by the Average Price.  The exercise price of the Substitute
Option per share of Substitute Common Stock shall then be equal to the Option
Price multiplied by a fraction, the numerator of which shall be the number of
shares of Common Stock for which the Option is then exercisable and the
denominator of which shall be the number of shares of Substitute Common Stock
for which the Substitute Option is exercisable.

          (e)  In no event, pursuant to any of the foregoing paragraphs, shall
the Substitute Option be exercisable for more than 19.9 percent of the shares of
Substitute Common Stock outstanding prior to the exercise of the Substitute
Option.  In the event that the Substitute Option would be exercisable for more
than 19.9 percent of the shares of Substitute Common Stock outstanding prior to
exercise but for this clause (e), the issuer of the Substitute Option (the
"Substitute Option Issuer") shall make a cash payment to Holder equal to the
excess of (i) the value of the Substitute Option without giving effect to the
limitation in this clause (e) over (ii) the value of the Substitute Option after
giving effect to the limitation in this clause (e).  This difference in value
shall be determined by a nationally recognized investment banking firm selected
by the Holder or the Owner, as the case may be, and reasonably acceptable to the
Acquiring Corporation.

          (f)  Issuer shall not enter into any transaction described in
subsection (a) of this Section 8 unless the Acquiring Corporation and any person
that controls the Acquiring Corporation assume in writing all the obligations of
Issuer hereunder.

     9.   (a)  At the request of the holder of the Substitute Option (the
"Substitute Option Holder"), the issuer of the Substitute Option (the
"Substitute Option Issuer") shall repurchase the Substitute Option from the
Substitute Option Holder at a price (the "Substitute Option


                                      - 7 -

<PAGE>

Repurchase Price") equal to the amount by which (i) the Highest Closing Price
(as hereinafter defined) exceeds (ii) the exercise price of the Substitute
Option, multiplied by the number of shares of Substitute Common Stock for which
the Substitute Option may then be exercised, and at the request of the owner
(the "Substitute Share Owner") of shares of Substitute Common Stock (the
"Substitute Shares"), the Substitute Option Issuer shall repurchase the
Substitute Shares at a price (the "Substitute Share Repurchase Price") equal to
the Highest Closing Price multiplied by the number of Substitute Shares so
designated.  The term "Highest Closing Price" shall mean the highest closing
price for shares of Substitute Common Stock within the six-month period
immediately preceding the date the Substitute Option Holder gives notice of the
required repurchase of the Substitute Option or the Substitute Share Owner gives
notice of the required repurchase of the Substitute Shares, as applicable.

          (b)  The Substitute Option Holder and the Substitute Share Owner, as
the case may be, may exercise its respective rights to require the Substitute
Option Issuer to repurchase the Substitute Option and the Substitute Shares
pursuant to this Section 9 by surrendering for such purpose to the Substitute
Option Issuer, at its principal office, the agreement for such Substitute Option
(or, in the absence of such an agreement, a copy of this Agreement) and
certificates for Substitute Shares accompanied by a written notice or notices
stating that the Substitute Option Holder or the Substitute Share Owner, as the
case may be, elects to require the Substitute Option Issuer to repurchase the
Substitute Option and/or the Substitute Shares in accordance with the provisions
of this Section 9.  As promptly as practicable, and in any event within five
business days after the surrender of the Substitute Option and/or certificates
representing Substitute Shares and the receipt of such notice or notices
relating thereto, the Substitute Option Issuer shall deliver or cause to be
delivered to the Substitute Option Holder the Substitute Option Repurchase Price
and/or to the Substitute Share Owner the Substitute Share Repurchase Price
therefor or the portion thereof which the Substitute Option Issuer is not then
prohibited under applicable law and regulation from so delivering.

          (c)  To the extent that the Substitute Option Issuer is prohibited
under applicable law or regulation from repurchasing the Substitute Option
and/or the Substitute Shares in part or in full, the Substitute Option Issuer
shall immediately so notify the Substitute Option Holder and/or the Substitute
Share Owner and thereafter deliver or cause to be delivered, from time to time,
to the Substitute Option Holder and/or the Substitute Share Owner, as
appropriate, the portion of the Substitute Share Repurchase Price, respectively,
which it is no longer prohibited from delivering, within five business days
after the date on which the Substitute Option Issuer is no longer so prohibited;
provided, however, that if the Substitute Option Issuer is at any time after
delivery of a notice of repurchase pursuant to subsection (b) of this Section 9
prohibited under applicable law or regulation from delivering to the Substitute
Option Holder and/or the Substitute Share Owner, as appropriate, the Substitute
Option Repurchase Price and the Substitute Share Repurchase Price, respectively,
in full (and the Substitute Option Issuer shall use its best efforts to receive
all required regulatory and legal approvals as promptly as practicable in order
to accomplish such repurchase), the Substitute Option Holder or Substitute Share
Owner may revoke its notice of repurchase of the Substitute Option or the
Substitute Shares either in whole or to the extent of the prohibition,
whereupon, in the latter case, the Substitute Option Issuer shall promptly (i)
deliver to the Substitute Option Holder or Substitute Share Owner, as
appropriate, that portion of the Substitute Option Repurchase Price or the
Substitute Share Repurchase Price that the Substitute Option Issuer is not
prohibited from delivering; and (ii) deliver, as appropriate, either (A) to the
Substitute Option Holder, a new Substitute Option evidencing the right of the
Substitute Option Holder to purchase that number of shares of the Substitute
Common Stock obtained by multiplying the number of shares of the Substitute
Common Stock for which the surrendered Substitute Option was exercisable at the
time of delivery of the notice of repurchase by a fraction, the numerator of
which is the Substitute Option Repurchase Price less the portion thereof
theretofore delivered to the Substitute Option Holder and the denominator of
which is the Substitute Option Repurchase Price, or (B) to the Substitute Share
Owner, a certificate for the Substitute Option Shares it is then so prohibited
from repurchasing.

     10.  The 90-day period for exercise of certain rights under Sections 2, 6,
7, and 13 shall be extended:  (i) to the extent necessary to obtain all
regulatory approvals for the exercise of such rights and for the expiration of
all statutory waiting periods; and (ii) to the extent necessary to avoid
liability under Section 16(b) of the 1934 Act by reason of such exercise.

     11.  Issuer hereby represents and warrants to Grantee as follows:


                                      - 8 -

<PAGE>

          (a)  Issuer has full corporate power and authority to execute and
deliver this Agreement and to consummate the transactions contemplated hereby.
The execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby have been duly and validly authorized by the
Board of Directors of Issuer and no other corporate proceedings on the part of
Issuer are necessary to authorize this Agreement or to consummate the
transactions so contemplated.  This Agreement has been duly and validly executed
and delivered by Issuer.

          (b)  Issuer has taken all necessary corporate action to authorize and
reserve and to permit it to issue, and at all times from the date hereof through
the termination of this Agreement in accordance with its terms will have
reserved for issuance upon the exercise of the Option, that number of shares of
Common Stock equal to the maximum number of shares of Common Stock at any time
and from time to time issuable hereunder, and all such shares, upon issuance
pursuant hereto, will be duly authorized, validly issued, fully paid,
nonassessable, and will be delivered free and clear of all claims, liens,
encumbrances, and security interests and not subject to any preemptive rights.

     12.  Grantee hereby represents and warrants to Issuer that:

          (a)  Grantee has all requisite corporate power and authority to enter
into 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)  The Option is not being, and any shares of Common Stock 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.

     13.  Neither of the parties hereto may assign any of its rights or
obligations under this Option Agreement or the Option created hereunder to any
other person, without the express written consent of the other party, except
that in the event a Subsequent Triggering Event shall have occurred prior to an
Exercise Termination Event, Grantee, subject to the express provisions hereof,
may assign in whole or in part its rights and obligations hereunder within 90
days following such Subsequent Triggering Event (or such later period as
provided in Section 10); provided, however, that until the date 15 days
following the date on which the Federal Reserve Board approves an application by
Grantee under the BHCA to acquire the shares of Common Stock subject to the
Option, Grantee may not assign its rights under the Option except in (i) a
widely dispersed public distribution, (ii) a private placement in which no one
party acquires the right to purchase in excess of 2 percent of the voting shares
of Issuer, (iii) an assignment to a single party (e.g., a broker or investment
banker) for the purpose of conducting a widely dispersed public distribution on
Grantee's behalf, or (iv) any other manner approved by the Federal Reserve
Board.

     14.  Each of Grantee and Issuer will use its best efforts to make all
filings with, and to obtain consents of, all third parties and governmental
authorities necessary to the consummation of the transactions contemplated by
this Agreement, including without limitation making application to list the
shares of Common Stock issuable hereunder on the NASDAQ Stock Market National
Market System upon official notice of issuance and applying to the Federal
Reserve Board under the BHCA for approval to acquire the shares issuable
hereunder, but Grantee shall not be obligated to apply to state banking
authorities for approval to acquire the shares of Common Stock issuable
hereunder until such time, if ever, as it deems appropriate to do so.

     15.  Notwithstanding anything to the contrary herein, in the event that the
Holder or Owner or any Related Person (as hereinafter defined) thereof is a
person making an offer or proposal to engage in an Acquisition Transaction
(other than the transaction contemplated by the Merger Agreement), then (i) in
the case of a Holder or any Related Person thereof, the Option held by it shall
immediately terminate and be of no further force or effect, and (ii) in the case
of an Owner or any Related Person thereof, the Option Shares held by it shall be
immediately repurchasable by Issuer at the Option Price.  A "Related Person" of
a Holder or Owner means any "affiliate" (as defined in Rule 12b-2 of the rules
and regulations under the


                                      - 9 -

<PAGE>

1934 Act) of the Holder or Owner and any person that is the beneficial owner of
25% or more of the voting power of the Holder or Owner, as the case may be.

     16.  The parties hereto acknowledge that damages would be an inadequate
remedy for a breach of this Agreement by either party hereto and that the
obligations of the parties hereto shall be enforceable by either party hereto
through injunctive or other equitable relief.

     17.  If any term, provision, covenant, or restriction contained in this
Agreement is held by a court or a federal or state regulatory agency of
competent jurisdiction to be invalid, void, or unenforceable, the remainder of
the terms, provisions, and covenants and restrictions contained in 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 Holder is not permitted to acquire, or Issuer is not
permitted to repurchase pursuant to Section 7, the full number of shares of
Common Stock provided in Section 1(a) hereof (as adjusted pursuant to
Section 1(b) or 5 hereof), it is the express intention of Issuer to repurchase
such lesser number of shares as may be permissible, without any amendment or
modification hereof.

     18.  All notices, requests, claims, demands, and other communications
hereunder shall be deemed to have been duly given when delivered in person, by
cable, telegram, telecopy, or telex, or by registered or certified mail (postage
prepaid, return receipt requested) at the respective addresses of the parties
set forth in the Merger Agreement.

     19.  This Agreement shall be governed by and construed in accordance with
the laws of the State of Delaware, regardless of the laws hat might otherwise
govern under applicable principles of conflicts of laws thereof.

     20.  This Agreement may be executed in two or more counterparts, each of
which shall be deemed to be an original, but all of which shall constitute one
and the same agreement.

     21.  Except as otherwise expressly provided herein, 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.


     22.  Except as otherwise expressly provided herein or in the Merger
Agreement, this Agreement contains the entire agreement between the parties with
respect to the transactions contemplated hereunder and supersedes all prior
arrangements or understandings with respect thereof, written or oral.  The terms
and conditions of this Agreement shall inure to the benefit of and be binding
upon the parties hereto and their respective successors and permitted assigns.
Nothing in this Agreement, expressed or implied, is intended to confer upon any
party, other than the parties hereto, and their respective successors except as
assigns, any rights, remedies, obligations, or liabilities under or by reason of
this Agreement, except as expressly provided herein.

     23.  Capitalized terms used in this Agreement and not defined herein shall
have the meanings assigned thereto in the Merger Agreement.


                                     - 10 -

<PAGE>

     IN WITNESS WHEREOF, each of the parties has caused this Agreement to be
executed on its behalf by its officers thereunto duly authorized, all as of the
date first above written.


                                   CALIFORNIA BANCSHARES, INC.



Attest:   Diane Mietzel            By:  Joseph P. Colmery
                                   Title:  President and Chief Executive
                                   Officer


                                   U. S. BANCORP


Attest:   John J. DeMott           By:  Gerry B. Cameron
          Secretary                Title:  Chairman and Chief Executive
                                   Officer



                                     - 11 -


<PAGE>

                                                                    Exhibit 10.2
                              EMPLOYMENT AGREEMENT



          AGREEMENT by and between U. S. Bancorp, an Oregon corporation
("Bancorp"), California Bancshares, Inc., a Delaware corporation ("CBI"), and
Joseph P. Colmery (the "Executive") dated as of the 11th day of February, 1996.

          The Board of Directors of Bancorp (the "Board") has determined that it
is in the best interests of Bancorp and its shareholders to assure that CBI will
have the continued dedication of the Executive pending the merger of CBI and
Bancorp ("the Merger") and that Bancorp will have the services of the Executive
after the Merger to provide Bancorp with continuity of management of facilities
involved in the Merger.  In order to accomplish these objectives, Bancorp and
CBI enter into this Agreement.

          NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

          1.   EFFECTIVE DATE.  The "Effective Date" shall mean the effective
date of the Merger.  This Agreement is null and void if the Merger does not
occur on or before January 31, 1997.

          2.   EMPLOYMENT.

               (a)  BY CBI.  CBI agrees to continue the Executive in its employ
and the Executive agrees to remain in the employ of CBI through the Effective
Date.  CBI covenants that it will not terminate the Executive's employment under
section 8(a) of the employment agreement between CBI and the Executive dated
November 18, 1995 ("the CBI Agreement") without the written consent of Bancorp.
The Executive covenants that he will not terminate his employment with CBI under
section 8(c) of the CBI Agreement without the written consent of Bancorp.  The
employment of the Executive by Bancorp is not a termination due to change of
control as defined in section 8(f) of the CBI Agreement and no benefits will be
paid under that section to the Executive as a result of the Merger or the
Executive's employment by Bancorp.

               (b)  BY BANCORP.  Bancorp agrees to employ the Executive and the
Executive agrees to accept employment with Bancorp subject to the terms and
conditions of this Agreement, for the period commencing on the Effective Date
and ending March 1, 1998 ("the Employment Period").  During the Employment
Period the Executive's position will not be relocated outside a 35 mile radius
of San Ramon, California, without the Executive's consent.  If neither party
gives notice to the other party to terminate their employment relationship on or
before March 1, 1998, the parties will execute a change of control agreement
with


                                      - 1 -

<PAGE>

a two year term consistent with the change of control agreements that are then
generally applicable for peer executives.

          3.   TERMS OF EMPLOYMENT.

               (a)  POSITION AND DUTIES.

                    (i)   Before the Effective Date, the Executive will continue
as President and Chief Executive Officer of CBI pursuant to the CBI agreement.
Except as provided in this Agreement, the CBI Agreement will continue in effect
until the Effective Date.  The Executive will receive for 1996 a partial bonus
under section 6 of the CBI agreement.  The partial bonus for 1996 will not
exceed $600,000 multiplied by the number of days in 1996 prior to the Effective
Date divided by 365.  On the Effective Date, this Agreement supersedes the CBI
Agreement.

                    (ii)  During the Employment Period, the Executive shall
serve as an Executive Vice President (of Bancorp or of the Bancorp subsidiary
responsible for the operations acquired by Bancorp from CBI in the Merger) with
such authority, duties, and responsibilities as are commensurate with such
position.

                    (iii) During the Employment Period, and excluding any
periods of vacation and sick leave to which the Executive is entitled, the
Executive agrees to devote substantially all of his attention and time during
normal business hours to the business and affairs of Bancorp and, to the extent
necessary, to discharge the responsibilities assigned to the Executive
hereunder, to use the Executive's reasonable best efforts to perform faithfully
and efficiently such responsibilities.  During the Employment Period, it shall
not be a violation of this Agreement for the Executive to (a) serve on
corporate, civic, or charitable boards or committees, (b) deliver lectures,
fulfill speaking engagements or teach at educational institutions, and (c)
manage personal investments, so long as such activities do not significantly
interfere with the performance of the Executive's responsibilities as an
employee of Bancorp in accordance with this Agreement.  It is expressly
understood and agreed that to the extent that any such activities have been
conducted by the Executive prior to the Effective Date, the continued conduct of
such activities (or the conduct of activities similar in nature and scope
thereto) subsequent to the Effective Date shall not thereafter be deemed to
interfere with the performance of the Executive's responsibilities to Bancorp.

               (b)  COMPENSATION.

                    (i)  BASE SALARY.  During the Employment Period, the
Executive shall receive an annual base salary ("Annual Base Salary") of
$200,000.  For calendar year 1998 the


                                      - 2 -

<PAGE>

Annual Base Salary shall be reviewed.  Any increase in the Annual Base Salary
shall not limit or reduce any other obligation to the Executive under this
Agreement.  Annual Base Salary shall not be reduced after any such increase and
the term Annual Base Salary as utilized in this Agreement shall refer to Annual
Base Salary as so increased.

                    (ii)  ANNUAL BONUS.  The Executive will be eligible for an
annual bonus beginning calendar year 1997 pursuant to an incentive compensation
plan adopted by the Board.  The bonus plan is anticipated to set a bonus target
of 35% of annual compensation, with a maximum bonus of $150,000.  The annual
bonus for each such calendar year will be payable only if Executive remains an
employee of Bancorp (or its subsidiary) through the end of the calender year.

                    (iii) INCENTIVE, SAVINGS, AND RETIREMENT PLANS.  During the
Employment Period, the Executive shall be entitled to participate in all
incentive, savings, and retirement plans, practices, policies, and programs
applicable generally to other peer executives of Bancorp and any company
controlled by, controlling, or under common control in the Bancorp ("Affiliated
Companies"), except Bancorp plans which provide a severance benefit related to
termination of employment and plans which provide for annual incentive
compensation.

                    (iv)  WELFARE BENEFIT PLANS.  During the Employment Period,
the Executive and/or the Executive's family, as the case may be, shall be
eligible for participation in and shall receive all benefits under welfare
benefit plans, practices, policies, and programs provided by Bancorp and its
affiliated companies (including, without limitation, medical, prescription,
dental, disability, employee life, group life, accidental death and travel
accident insurance plans and programs) to the extent applicable generally to
other peer executives of Bancorp and its affiliated companies.

                    (v)   EXPENSES.  During the Employment Period, the Executive
shall be entitled to receive prompt reimbursement for all reasonable expenses
incurred by the Executive in accordance with Bancorp's policies.

                    (vi)  FRINGE BENEFITS.  During the Employment Period, the
Executive shall be entitled to fringe benefits, including, without limitation,
payment of club dues, and, if applicable, use of an automobile and payment of
related expenses, to the extent applicable generally to other peer executives of
Bancorp and its affiliated companies.

                    (vii) OFFICE AND SUPPORT STAFF.  During the Employment
Period, the Executive shall be entitled to an office or offices of a size and
with furnishings and other appointments


                                      - 3 -

<PAGE>

as provided generally at any time thereafter with respect to other peer
executives of Bancorp and its affiliated companies.


                   (viii) VACATION.  During the Employment Period, the Executive
shall be entitled to paid vacation in accordance with the plans, policies,
programs, and practices of Bancorp and its affiliated companies as in effect
generally at any time with respect to other peer executives of Bancorp and its
affiliated companies.

          4.   TERMINATION OF EMPLOYMENT.

               (a)  DEATH OR DISABILITY.  The Executive's employment shall
terminate automatically upon the Executive's death during the Employment Period.
If Bancorp determines in good faith that the Disability of the Executive has
occurred during the Employment Period (pursuant to the definition of Disability
set forth below), it may give to the Executive written notice in accordance with
Section 10(b) of this Agreement of its intention to terminate the Executive's
employment.  In such event, the Executive's employment with Bancorp shall
terminate effective on the 30th day after receipt of such notice by the
Executive (the "Disability Effective Date"), provided that, within 30 days after
such receipt, the Executive shall not have returned to full-time performance of
the Executive's duties.  For purposes of this Agreement, "Disability" shall mean
the absence of the Executive from the Executive's duties with Bancorp on a full-
time basis for 180 consecutive business days as a result of incapacity due to
mental or physical illness which is determined to be total and permanent by a
physician selected by Bancorp or its insurers and acceptable to the Executive or
the Executive's legal representative.

               (b)  CAUSE.  Bancorp may terminate the Executive's employment
during the Employment Period for cause.  For purposes of this Agreement, "Cause"
shall mean:

                    (i)   the continued failure of the Executive to perform
substantially the Executive's duties with Bancorp or one of its affiliates
(other than any such failure resulting from incapacity due to physical or mental
illness), after a written demand for substantial performance is delivered to the
Executive by the Board or the Chief Executive Officer of Bancorp which
specifically identifies the manner in which the Board or Chief Executive Officer
believes that the Executive has not substantially performed the Executive's
duties, or

                    (ii)  the willful engaging by the Executive in illegal
conduct or gross misconduct which is materially and demonstrably injurious to
Bancorp, or


                                      - 4 -

<PAGE>

                    (iii) conviction of a felony or guilty or nolo contendere
plea by the Executive with respect thereto, or

                    (iv)  a material breach of the covenants contained in
Section 8.

For purposes of this provision, no act or failure to act, on the part of the
Executive, shall be considered "willful" unless it is done, or omitted to be
done, by the Executive in bad faith or without reasonable belief that the
Executive's action or omission was in the best interests of Bancorp.  Any act,
or failure to act, based upon authority given pursuant to a resolution duly
adopted by the Board or upon the instructions of the Chief Executive Officer or
a senior officer of Bancorp or based upon the advice of counsel for Bancorp
shall be conclusively presumed to be done, or omitted to be done, by the
Executive in good faith and in the best interests of Bancorp.  The termination
of employment of the Executive shall not be deemed to be for Cause unless and
until there shall have been delivered to the Executive a copy of a resolution
duly adopted by the affirmative vote of not less than two-thirds of the entire
membership of the Board at a meeting of the Board called and held for such
purpose (after reasonable notice is provided to the Executive and the Executive
is given an opportunity, together with counsel, to be heard before the Board),
finding that, in the good faith opinion of the Board, the Executive is guilty of
the conduct described in subparagraph (i) or (ii) above, and specifying the
particulars thereof in detail.

               (c)  GOOD REASON.  The Executive's employment may be terminated
by the Executive for Good Reason.  For purposes of this Agreement, "Good Reason"
shall mean, in the absence of a written consent of the Executive, any material
failure by Bancorp to comply with any of the provisions of this Agreement, which
is not remedied by Bancorp promptly after receipt of notice thereof given by the
Executive, other than an isolated, insubstantial, and inadvertent failure not
occurring in bad faith.

Anything in this Agreement to the contrary notwithstanding a termination for any
reason other than Cause, death or disability between the first anniversary of
the Effective Date and March 1, 1998, shall be deemed to be a termination for
Good Reason for all purposes of this Agreement.

               (d)  NOTICE OF TERMINATION.  Any termination by Bancorp for
Cause, or by the Executive for Good Reason, shall be communicated by Notice of
Termination to the other party hereto given in accordance with Section 10(b) of
this Agreement.  For purposes of this Agreement, a "Notice of Termination" means
a written notice which (i) indicates the specific termination provision in this
Agreement relied upon, (ii) to the extent applicable, sets forth in reasonable
detail the facts and


                                      - 5 -

<PAGE>

circumstances claimed to provide a basis for termination of the Executive's
employment under the provision so indicated and (iii) if the Date of Termination
(as defined below) is other than the date of receipt of such notice, specifies
the  termination date (which date shall be not more than 30 days after the
giving of such notice).  The failure by the Executive or Bancorp to set forth in
the Notice of Termination any fact or circumstance which contributes to a
showing of Good Reason or Cause shall not waive any right of the Executive or
Bancorp, respectively, from asserting such fact or circumstance in enforcing the
Executive's or Bancorp's rights hereunder.

               (e)  DATE OF TERMINATION.  "Date of Termination" means (i) if the
Executive's employment is terminated by Bancorp for Cause, or by the Executive
for Good Reason, the date of receipt of the Notice of Termination or any later
date specified therein within 30 days of such notice, as the case may be, (ii)
if the Executive's employment is terminated by Bancorp other than for Cause or
Disability, the Date of Termination shall be the date on which Bancorp notifies
the Executive of such termination, and (iii) if the Executive's employment is
terminated by reason of death or Disability, the Date of Termination shall be
the date of death of the Executive or the Disability Effective Date, as the case
may be.

          5.   OBLIGATIONS OF BANCORP UPON TERMINATION.

               (a)  GOOD REASON; OTHER THAN FOR CAUSE, DEATH, OR DISABILITY.
If, during the Employment Period, Bancorp shall terminate the Executive's
employment other than for Cause or Disability or the Executive shall terminate
employment for Good Reason:

                    (i)   Bancorp shall pay to the Executive in a lump sum in
cash within 30 days after the Date of Termination the aggregate of the following
amounts:

                    A.    The Executive's Annual Base Salary through the Date of
               Termination to the extent not already paid.

                    B.    In the event such termination occurs in calendar 1996,
               a pro rata annual bonus calculated as follows:  the excess, if
               any, of (i) the average of the annual bonuses paid to the
               Executive by CBI with respect to calendar years 1993, 1994, and
               1995 multiplied by the number of days in 1996 through the date of
               termination divided by 365 over (ii) the bonus actually paid by
               CBI to Executive with respect to the portion of 1996 prior to the
               Effective Date.


                                      - 6 -

<PAGE>

                    C.   An amount equal to three times the sum of
               (i) Executive's Annual Base Salary; (ii) the Average Annual Bonus
               (the average of the annual bonuses paid to the Executive by CBI
               and Bancorp with respect to the prior three calendar years); and
               (iii) the contributions made by Bancorp or CBI in the 12 months
               prior to termination to profit sharing, 401k, and retirement
               plans.

                    (ii)  for three years after the Executive's Date of
Termination, or such longer period as may be provided by the terms of the
appropriate plan, program, practice or policy, Bancorp shall continue benefits
to the Executive and/or the Executive's family at least equal to those which
would have been provided to them in accordance with the plans, programs,
practices, and policies described in Section 3(b)(iv) of this Agreement if the
Executive's employment had not been terminated or, if more favorable to the
Executive, as in effect generally at any time thereafter with respect to other
peer executives of Bancorp and its affiliated companies and their families,
provided, however, that if the Executive becomes reemployed with another
employer and is eligible to receive medical or other welfare benefits under
another employer-provided plan, the medical and other welfare benefits described
herein shall be secondary to those provided under such other plan during such
applicable period of eligibility.  For purposes of determining eligibility (but
not the time of commencement of benefits) of the Executive for retiree benefits
pursuant to such plans, practices, programs, and policies, the Executive shall
be considered to have remained employed until three years after the Date of
Termination and to have retired on the last day of such period;

                    (iii) to the extent not theretofore paid or provided,
Bancorp shall timely pay or provide to the Executive any other amounts or
benefits required to be paid or provided or which the Executive is eligible to
receive under any plan, program, policy or practice, or contract or agreement of
Bancorp and its affiliated companies (such other amounts and benefits shall be
hereinafter referred to as the "Other Benefits") except that the Executive is
not eligible to participate in Bancorp's severance benefits plans or any other
Bancorp employee benefits plans which are expressly superseded by this
Agreement.

               (b)  DEATH.  If the Executive's employment is terminated by
reason of the Executive's death during the Employment Period, this Agreement
shall terminate without further obligations to the Executive's legal
representatives under this Agreement, other than for payment of Accrued
Obligations and the timely payment or provision of Other Benefits.  Accrued
Obligations shall be paid to the Executive's estate or beneficiary, as
applicable, in a lump sum in cash within 30 days of the Date of Termination.
With respect to the provision of


                                      - 7 -

<PAGE>

Other Benefits, the term Other Benefits as utilized in this Section 5(b) shall
include death benefits as in effect on the date of the Executive's death with
respect to other peer executives of Bancorp and its affiliated companies and
their beneficiaries.

               (c)  DISABILITY.  If the Executive's employment is terminated by
reason of the Executive's Disability during the Employment Period, this
Agreement shall terminate without further obligations to the Executive, other
than for payment of Accrued Obligations and the timely payment or provision of
Other Benefits.  Accrued Obligations shall be paid to the Executive in a lump
sum in cash within 30 days of the Date of Termination.  With respect to the
provision of Other Benefits, the term Other Benefits as utilized in this Section
5(c) shall include, and the Executive shall be entitled after the Disability
Effective Date to receive, disability and other benefits as in effect at any
time thereafter generally with respect to other peer executives of Bancorp and
its affiliated companies and their families.

               (d)  CAUSE; OTHER THAN FOR GOOD REASON.  If the Executive's
employment shall be terminated for Cause or the Executive terminates his
employment without Good Reason during the Employment Period, this Agreement
shall terminate without further obligations to the Executive other than the
obligation to pay to the Executive any unpaid Annual Base Salary through the
Date of Termination, previously deferred compensation, and Other Benefits.

          6.   NON-EXCLUSIVITY OF RIGHTS.  Nothing in this Agreement shall
prevent or limit the Executive's continuing or future participation in any plan,
program, policy, or practice provided by Bancorp or any of its affiliated
companies and for which the Executive may qualify, except that the provisions of
this Agreement supersede the provisions of Bancorp's severance benefit plan and
the Executive waives any right to benefits under that plan.  Amounts which are
vested benefits or which the Executive is otherwise entitled to receive under
any plan, policy, practice, or program of, or any contract or agreement with,
Bancorp or any of its affiliate companies at or subsequent to the Date of
Termination shall be payable in accordance with such plan, policy, practice, or
program, or contract or agreement, except as explicitly modified by this
Agreement.

          7.   NO MITIGATION; LEGAL FEES.  In no event shall the Executive be
obligated to seek other employment or take other action by way of mitigation of
the amounts payable to the Executive under any of the provisions of this
Agreement and, except as provided in Section 5(a)(ii), such amounts shall not be
reduced whether or not the Executive obtains other employment, Bancorp agrees to
pay as incurred, to the full extent permitted by law, all legal fees and
expenses that the Executive may


                                      - 8 -

<PAGE>

reasonably incur as a result of any contest (regardless of the outcome thereof)
by Bancorp, the Executive, or others of the validity or enforceability of, or
liability under, any provisions of the Agreement or any guarantee of performance
thereof (including as a result of any contest by the Executive about the amount
of any payment pursuant to this Agreement).

          8.   CONFIDENTIAL INFORMATION.

               (a)  The Executive shall hold in a fiduciary capacity for the
benefit of Bancorp all secret or confidential information, knowledge, or data
relating to Bancorp, CBI or any of its affiliated companies, and their
respective businesses, which shall have been obtained by the Executive during
the Executive's employment by Bancorp, CBI or any of its affiliated companies
and which shall not be or become public knowledge (other than by acts by the
Executive or representatives of the Executive in violation of this Agreement).
After termination of the Executive's employment with Bancorp, the Executive
shall not, without the prior written consent of Bancorp or as may otherwise be
required by law or legal process, communicate or divulge any such information,
knowledge, or data to anyone other than Bancorp and those designated by it.  In
no event shall an asserted violation of the provisions of this Section 8
constitute a basis for deferring or withholding any amounts otherwise payable to
the Executive under this Agreement.

               (b)  In the event of a breach or threatened breach of this
Section 8, the Executive agrees that Bancorp shall be entitled to injunctive
relief in a court of appropriate jurisdiction to remedy any such breach or
threatened breach, the Executive acknowledges that damages would be inadequate
and insufficient.

               (c)  Any termination of the Executive's employment or of this
Agreement shall have no effect on the continuing operation of this Section 8.

          9.   SUCCESSORS.

               (a)  This Agreement is personal to the Executive and without the
prior written consent of Bancorp shall not be assignable by the Executive
otherwise than by will or the laws of descent and distribution.  This Agreement
shall inure to the benefit of and be enforceable by the Executive's legal
representatives.

               (b)  This Agreement shall inure to the benefit of and be binding
upon Bancorp and its successors and assigns.  Bancorp may assign its rights and
obligations under this Agreement to its subsidiaries.


                                      - 9 -

<PAGE>

               (c)  Bancorp will require any successor (whether direct or
indirect, by purchase, merger, consolidation, or otherwise) to all or
substantially all of the business and/or assets of Bancorp to assume expressly
and agree to perform this Agreement in the same manner and to the same extent
that Bancorp would be required to perform it if no such succession had taken
place.  As used in  this Agreement, "Bancorp" shall mean U. S. Bancorp and any
successor to its business and/or assets which assumes and agrees to perform this
Agreement by operation of law, or otherwise.

          10.  MISCELLANEOUS.

               (a)  This Agreement shall be governed by and construed in
accordance with the laws of the State of Oregon, without reference to principles
of conflict of laws.  The captions of this Agreement are not part of the
provisions and have no force or effect.  This Agreement may only be amended or
modified by a written agreement executed by the parties or their respective
successors and legal representatives.

               (b)  All notices and other communications required under this
Agreement shall be in writing and shall be given by hand delivery to the other
party or by registered or certified mail, return receipt requested, postage
prepaid, addressed as follows:

               If to the Executive:



               If to Bancorp:


               111 S.W. Fifth Avenue
               Portland, Oregon  97204

               Attention:  General Counsel

or to such other address as either party shall have furnished to the other in
writing.  Notice and communications shall be effective when actually received by
the addressee.

               (c)  The invalidity or unenforceability of any provision of this
Agreement shall not affect the validity or enforceability of any other provision
of this Agreement.

               (d)  Bancorp may withhold from any amounts payable under this
Agreement such federal, state, local, or foreign taxes as shall be required to
be withheld pursuant to any applicable law or regulation.


                                     - 10 -

<PAGE>

               (e)  The Executive's or Bancorp's failure to insist upon strict
compliance with any provision of this Agreement or the failure to assert any
right the Executive or Bancorp may have under this Agreement shall not be deemed
to be a waiver of such provision or right or any of the provision or right of
this Agreement.

               (f)  The Executive and Bancorp acknowledge that, except as may
otherwise be provided under any other written agreement between them, the
employment of the Executive by Bancorp is "at will."   From and after the
Effective Date, this Agreement shall supersede any other employment, severance,
or change of control agreement between the parties with respect to the subject
matter hereof.

               (g)  Notwithstanding any provision of this Agreement, Bancorp
shall have no obligation to make any payments to Executive if or to the extent
such payments are prohibited by any applicable law or regulations, including,
without limitation, the FDIC's regulation regarding golden parachute and
indemnification payments promulgated under the Comprehensive Thrift and Bank
Fraud Prosecution and Taxpayer Recover Act of 1990.

          IN WITNESS WHEREOF, the Executive has hereunto set the Executive's
hand and, pursuant to the authorization from their respective Boards of
Directors, Bancorp and CBI each has caused these presents to be executed in its
respective name on its behalf, all as of the day and year first above written.


                              /s/ JOSEPH P. COLMERY
                              ----------------------------------------
                              Joseph P. Colmery


                              U. S. BANCORP


                              By  /s/ ANDERS GILTVEDT
                                  ------------------------------------


                              CALIFORNIA BANCSHARES, INC.


                              By  /s/ DONALD J. GEHB
                                  ------------------------------------


                                     - 11 -


<PAGE>

                                                     EXHIBIT 23.1



Consent of Independent Accountants


We consent to the incorporation by reference in the Registration 
Statement of U.S. Bancorp on Form S-4 of our report dated January 
19, 1995, on our audits of the consolidated financial statements of 
West One Bancorp and subsidiaries as of December 31, 1994, and for 
each of the two years in the period ended December 31, 1994, which 
report includes an explanatory paragraph relating to West One 
Bancorp's change in accounting for investment securities in 1993 
and is included in U.S. Bancorp's 1995 Annual Report on Form 10-K.  
We also consent to the reference to our firm under the caption 
"Experts."

COOPERS & LYBRAND L.L.P.


Boise, Idaho
April 5, 1996




<PAGE>


                                                     EXHIBIT 23.2



INDEPENDENT AUDITORS'  CONSENT

We consent to the incorporation by reference in this Registration Statement 
of U.S. Bancorp on Form S-4 of our report dated January 30, 1996 (February 
11, 1996 as to the final paragraph of Note 2), appearing in the Annual Report 
on Form 10-K of U.S. Bancorp for the year ended December 31, 1995 and to the 
reference to us under the heading "Experts" in the Registration Statement.

DELOITTE & TOUCHE LLP


Portland, Oregon
April 5, 1996




<PAGE>

                                                     EXHIBIT 23.3



            CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS





The Board of Directors
California Bancshares, Inc.:

We consent to the incorporation by reference of our report dated January 17, 
1996, except for Note 14, which is as of February 12, 1996, with respect to 
the consolidated balance sheet of California Bancshares, Inc. and 
subsidiaries as of December 31, 1995 and 1994, and the related consolidated 
statements of income, changes in shareholders' equity and cash flows for each 
of the years in the three-year period ended December 31, 1995, which report 
is incorporated by reference in the Joint Proxy/Prospectus of California 
Bancshares, Inc. and U. S. Bancorp and to the reference to our firm under the 
heading "Experts" in the Joint Proxy/Prospectus.

                                  KPMG Peat Marwick LLP

San Francisco, California
April 5, 1996





<PAGE>

                                                     EXHIBIT 23.7


                [GOLDMAN, SACHS & CO. LETTERHEAD]


CONFIDENTIAL
- ------------


April 10, 1996


Board of Directors
California Bancshares, Inc.
100 Park Place, Suite 140
San Ramon, California  94583

Re:  Registration Statement on Form S-4 of U.S. Bancorp,
     Including the Proxy Statement of California Bancshares,
     Inc., and Prospectus of U.S. Bancorp

Gentlemen:

Reference is made to our opinion letter dated the date of the
Proxy Statement/Prospectus referred to below, with respect to the
fairness to the holders of the outstanding shares of Common
Stock, par value $2.50 per share (the "Shares"), of California
Bancshares, Inc. (the "Company"), of the exchange ratio of 0.95
shares of Common Stock, par value $5.00 per share, of U.S.
Bancorp to be received for each Share pursuant to the merger
contemplated by the Restated Agreement and Plan of Merger dated
as of February 11, 1996, between U.S. Bancorp and the Company.

The foregoing opinion letter is for the information and
assistance of the Board of Directors of the Company in connection
with its consideration of the transaction contemplated therein
and is not to be used, circulated, quoted or otherwise referred
to for any other purpose, nor is it to be filed with, included in
or referred to in whole or in part in any registration statement,
proxy statement or any other document, except in accordance with
our prior written consent.

In that regard, we hereby consent to the reference to the opinion
of our Firm under the captions "Summary--Opinion of CBI's
Financial Adviser," "Background of and Reasons for the Merger--
Reasons for the Merger," and "Background of and Reasons for the
Merger--Opinion of CBI's Financial Adviser," and to the inclusion
of the foregoing opinion in the Proxy Statement/Prospectus
included in the above-mentioned Registration Statement.  In
giving such consent, we do not thereby admit that we come within
the category of persons whose consent is required under Section 7


<PAGE>


Californa Bancshares, Inc.
April 10, 1996
Page Two



of the Securities Act of 1933 or the rules and regulations of the
Securities and Exchange Commission thereunder.

Very truly yours,

GOLDMAN, SACHS & CO.




<PAGE>

                                                           Exhibit 24


                        POWER OF ATTORNEY


         KNOW ALL MEN BY THESE PRESENTS that each person whose signature 
appears below constitutes and appoints GERRY B. CAMERON, STEVEN P. ERWIN, 
DWIGHT V. BOARD, and SHERYL DAWSON, and each of them, such person's true and 
lawful attorneys-in-fact and agents, with full power of substitution and 
resubstitution, for such person and in his or her name, place, and stead, in 
any and all such person's capacities with U. S. Bancorp, an Oregon 
corporation, to sign a registration statement on Form S-4 relating to shares 
of U. S. Bancorp to be issued in connection with the merger of California 
Bancshares, Inc., into U. S. Bancorp, and any and all amendments (including 
post-effective amendments) thereto, and to file the same, with all exhibits 
thereto, and other documents in connection therewith, with the Securities and 
Exchange Commission under the Securities Act of 1933, granting unto said 
attorneys-in-fact and agents, and each of them, full power and authority to 
do and perform each and every act and thing and to execute any and all 
instruments which they or each of them deem necessary or desirable in 
connection with said registration statement as fully to all intents and 
purposes as he or she might or could do in person, hereby ratifying and 
confirming all that said attorneys-in-fact and agents, or each of them, or 
their or his or her substitute or substitutes, may lawfully do or cause to be 
done by virtue hereof.  This power of attorney may be executed in one or more 
counterparts, which taken together shall constitute one and the same original.

         IN WITNESS WHEREOF, this power of attorney has been executed by each 
of the undersigned as of the 21st day of March, 1996.

         Signature                     Title
         ---------                     -----

/s/ GERRY B. CAMERON              Chairman of the Board and Chief Executive
- --------------------------             Officer and Director
Gerry B. Cameron          


/s/ STEVEN P. ERWIN               Executive Vice President and
- --------------------------             Chief Financial Officer
Steven P. Erwin           


/s/ HARRY BETTIS                  Director
- --------------------------
Harry Bettis


                                  Director
- --------------------------
Carolyn Silva Chambers



<PAGE>



/s/ FRANKLIN G. DRAKE             Director
- --------------------------
Franklin G. Drake


/s/ ROBERT L. DRYDEN              Director
- --------------------------
Robert L. Dryden


/s/ JOHN B. FERY                  Director
- --------------------------
John B. Fery


/s/ JOSHUA GREEN III              Director
- --------------------------
Joshua Green III


/s/ DANIEL R. NELSON              Director
- --------------------------
Daniel R. Nelson


/s/ ALLEN T. NOBLE                Director
- --------------------------
Allen T. Noble


/s/ PAUL A. REDMOND               Director
- --------------------------
Paul A. Redmond


/s/ N. STEWART ROGERS             Director
- --------------------------
N. Stewart Rogers


/s/ BENJAMIN R. WHITELEY          Director
- --------------------------
Benjamin R. Whiteley



                                    - 2 -


<PAGE>

                           CALIFORNIA BANCSHARES, INC.

                      PROXY SOLICITED BY BOARD OF DIRECTORS
                       FOR SPECIAL MEETING OF STOCKHOLDERS
                           TO BE HELD MAY 22, 1996

The undersigned holder of Common Stock of California Bancshares, Inc. ("CBI")
hereby appoints James L. McKenna, Jr., and Richard J. Clancy, and each of
them, the proxies of the undersigned with full powers of substitution, to
represent and to vote all shares of common stock of CBI held of record by the
undersigned as of the close of business on April 10, 1996, at the special
meeting of stockholders of CBI, to be held at the San Ramon Marriott, 2600
Bishop Drive, San Ramon, California, on Wednesday, May 22, 1996, at 11:00
a.m. (local time) and at any adjournment or postponement of said meeting, with
all the powers the undersigned would possess if personally present, as follows:


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

<PAGE>

                                                               Please mark   /x/
                                                              your votes as
                                                               indicated in
                                                               this example


                                                       FOR  AGAINST   ABSTAIN

1.   PROPOSAL TO APPROVE AND ADOPT THE RESTATED        / /    / /       / /
     AGREEMENT AND PLAN OF MERGER, dated as of
     February 11, 1996, between U.S. Bancorp and
     California Bancshares, Inc., and the
     consummation of the transactions contemplated
     thereby.

2.   In their discretion, the proxies are authorized
     to vote upon such other business as may properly
     come before the meeting or any adjournment
     thereof.

     THE SHARES REPRESENTED BY THIS PROXY WILL BE VOTED AS DIRECTED, OR IF
DIRECTIONS ARE NOT INDICATED, WILL BE VOTED FOR PROPOSAL 1. IF OTHER BUSINESS IS
PRESENTED, THIS PROXY SHALL BE VOTED IN ACCORDANCE WITH THE BEST JUDGMENT OF
THE PROXIES.

     Said proxies or their substitutes (or if only one be present, the proxy
present) shall have and may exercise all of the powers of all said proxies
hereunder at said meeting or any adjournment or postponement thereof.

     Receipt is acknowledged of the Notice of Special Meeting of Stockholders
and Proxy Statement/Prospectus dated April 17, 1996. The undersigned hereby
revokes all proxies heretofore given by the undersigned to vote at said meeting
or any adjournment thereof.

     THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS AND MAY BE
REVOKED PRIOR TO ITS EXERCISE.



Signature (s)___________________________________  Dated: ______________, 1996

SIGNING INSTRUCTIONS (IMPORTANT): PLEASE SIGN EXACTLY AS YOUR NAME APPEARS
HEREON. (EXECUTORS, ADMINISTRATORS, TRUSTEES, GUARDIANS AND ATTORNEYS SHOULD
GIVE FULL TITLE. IF SIGNING ON BEHALF OF A CORPORATION, PLEASE SIGN THE FULL
CORPORATE NAME AND THE TITLE OF THE AUTHORIZED OFFICER SIGNING ON BEHALF OF THE
CORPORATION.) ALL JOINT OWNERS AND JOINT TRUSTEES SHOULD SIGN.


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