US BANCORP \DE\
S-4, 1999-04-02
NATIONAL COMMERCIAL BANKS
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<PAGE>
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 2, 1999
                                                                 (NO. 333-     )
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       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)
 
<TABLE>
<S>                                 <C>                                 <C>
             DELAWARE                              6711                             41-0255900
 (State or other jurisdiction of       (Primary Standard Industrial              (I.R.S. Employer
  Incorporation or Organization)       Classification Code Number)            Identification Number)
</TABLE>
 
<TABLE>
<S>                                                          <C>
                       U.S. BANCORP                                              LEE R. MITAU, ESQ.
                      U.S. BANK PLACE                                              U.S. BANK PLACE
                  601 SECOND AVENUE SOUTH                                      601 SECOND AVENUE SOUTH
             MINNEAPOLIS, MINNESOTA 55402-4302                            MINNEAPOLIS, MINNESOTA 55402-4302
                      (612) 973-1111                                               (612) 973-1111
    (Address, including zip code, and telephone number,       (Name, address, including zip code, and telephone number,
 including area code, of registrant's principal executive            including area code, of agent for service)
                         offices)
</TABLE>
 
                           --------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                                   <C>
              ELIZABETH C. HINCK, ESQ.                             KURT L. KICKLIGHTER, ESQ.
                Dorsey & Whitney LLP                                FRANKLIN T. LLOYD, ESQ.
              2200 South Sixth Street                              Higgs, Fletcher & Mack LLP
            Minneapolis, Minnesota 55402                         401 West A Street, Suite 2600
                   (612) 340-8877                                 San Diego, California 92101
                                                                         (619) 236-1551
</TABLE>
 
    Approximate date of commencement of proposed sale of the securities to the
public: as soon as practicable after this Registration Statement becomes
effective.
 
    If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box: / /
 
    If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act of 1933, as amended (the
"Securities Act"), check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering: / /
 
    If this form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering: / /
                           --------------------------
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                               PROPOSED MAXIMUM                        PROPOSED MAXIMUM       AMOUNT OF
           TITLE OF EACH CLASS OF                AMOUNT TO BE       OFFERING PRICE        AGGREGATE          REGISTRATION
        SECURITIES TO BE REGISTERED             REGISTERED(1)        PER SHARE(2)       OFFERING PRICE          FEE(3)
<S>                                           <C>                 <C>                 <C>                 <C>
Common Stock, $1.25 par value...............   9,000,000 shares         $31.40           $282,600,000         $78,562.80
Warrants to Purchase Common Stock...........   75,789 warrants          $31.40           $11,898,875          $3,307.89
    Total...................................          --                  --             $294,498,875         $81,870.69
</TABLE>
 
(1) Based upon an estimate of the maximum number of shares of common stock, no
    par value (the "BOC Common Stock"), of Bank of Commerce ("BOC") which will
    each be exchanged for shares of common stock, $1.25 par value (the "USB
    Common Stock"), of U.S. Bancorp ("USB") pursuant to the Merger described
    herein.
 
(2) Calculated in accordance with Rule 457(f)(l) under the Securities Act based
    on the aggregate market value of the 15,000,000 shares of BOC Common Stock
    expected to be canceled in connection with the Merger on March 30, 1999. The
    offering price of the warrants is based on the offering price of the USB
    Common Stock and relates to the 126,315 "D" Warrants of BOC being exchanged
    in the Merger (with each such warrant to purchase five shares of USB Common
    Stock).
 
(3) The registration fee of $81,870.69 was calculated pursuant to Rule 457(f)
    under the Securities Act, as follows: .000278 multiplied by the proposed
    maximum aggregate offering price.
                           --------------------------
    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, AS AMENDED, OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                  [LOGO]
 
Dear Shareholder:
 
The Board of Directors of Bank of Commerce ("BOC") has approved an agreement
providing for the merger of BOC with and into a subsidiary of U.S. Bancorp
("USB"). In the merger, your shares of BOC common stock will be converted into
shares of USB common stock, based upon an exchange ratio described below. The
acquisition will be made as provided in the agreement between USB and BOC. A
copy of the agreement is attached as an appendix.
 
According to the exchange ratio agreed to by USB and BOC, you will receive 0.60
shares of USB common stock for each share of BOC common stock that you hold.
However, if the average USB stock price for the 20 consecutive trading days
ending three days before we close the merger is either greater than $40 or less
than $30, that exchange ratio may be adjusted. If that average USB closing stock
price is greater than $40, you will receive USB shares valued at $24, using that
average price, for each BOC share. If that average USB stock price is less than
$30, you will receive USB shares valued at $18, using that average price, for
each BOC share. We cannot predict what the average price for USB common stock
will be in the future. The last reported sale price of USB common stock on the
NYSE Composite Tape on [date prior to date of proxy], 1999 was $[price] per
share, and the average closing price for the twenty consecutive trading days
ending on such date was $[price] per share.
 
We can't complete the merger unless we obtain the necessary government approvals
and unless the holders of at least two-thirds of the outstanding shares of BOC
common stock approve it. You are being asked to vote on the proposed merger at
the BOC 1999 annual meeting of shareholders held on June 15, 1999. YOUR VOTE IS
VERY IMPORTANT. WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING, PLEASE TAKE THE
TIME TO VOTE BY COMPLETING AND MAILING THE ENCLOSED PROXY CARD. If you date and
mail your proxy card without indicating how you want to vote, your proxy will be
counted as a vote FOR the merger. If you don't return your card, or if you don't
instruct your broker how to vote any shares held for you in your broker's name,
the effect will be a vote against the merger. If you are a record holder and you
attend the meeting, you may vote in person if you wish, even though you have
previously returned your proxy.
 
The Board of Directors of BOC enthusiastically supports this merger and
recommends that you vote in favor of it. The accompanying Proxy
Statement/Prospectus gives you detailed information about the merger. You are
urged to read it carefully. This Proxy Statement/Prospectus serves as the proxy
statement for the BOC 1999 annual meeting of shareholders and as the prospectus
for the issuance of USB common stock in the merger.
 
<TABLE>
<S>                                          <C>
BANK OF COMMERCE
 
    [LOGO]                                                         [LOGO]
Chairman, Chief Executive Officer and
President                                    Vice Chair of the Board
</TABLE>
 
NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THE SECURITIES TO BE ISSUED UNDER THIS
PROXY STATEMENT/PROSPECTUS OR DETERMINED IF THIS PROXY STATEMENT/PROSPECTUS IS
ACCURATE OR ADEQUATE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
THE SECURITIES WE ARE OFFERING THROUGH THIS DOCUMENT ARE NOT SAVINGS OR DEPOSIT
ACCOUNTS OR OTHER OBLIGATIONS OF ANY BANK OR NON-BANK SUBSIDIARY OF EITHER OF
OUR COMPANIES, AND THEY ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE
CORPORATION, THE BANK INSURANCE FUND OR ANY OTHER GOVERNMENTAL AGENCY.
 
                 PROXY STATEMENT/PROSPECTUS DATED [DATE], 1999
                AND FIRST MAILED TO SHAREHOLDERS ON [DATE], 1999
<PAGE>
                                     [LOGO]
 
                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                     TO BE HELD JUNE 15, 1999 AT 6:00 P.M.
                        AT THE HYATT REGENCY, SAN DIEGO
 
TO THE SHAREHOLDERS OF BANK OF COMMERCE:
 
    The Annual Meeting of Shareholders (the "Annual Meeting") of BOC, will be
held at the Hyatt Regency San Diego, 1 Market Place, San Diego, California 92101
at 6:00 p.m. local time on June 15, 1999 for the following purposes:
 
    1.  To consider and vote upon a proposal to approve the principal terms of
the Agreement and Plan of Reorganization dated as of February 18, 1999, as
amended and restated as of March 26, 1999 (as so amended and restated, the
"agreement") between BOC and USB. A copy of the agreement is attached as
Appendix A to this Proxy Statement/Prospectus. The agreement provides the terms
and conditions for the merger of BOC with and into U.S. Bank, National
Association, a national bank subsidiary of USB.
 
    THE BOARD OF DIRECTORS RECOMMENDS THAT YOU VOTE FOR THIS PROPOSAL.
 
    2.  To elect nine persons as directors of BOC to serve until their
successors are duly elected and qualified.
 
    THE BOARD OF DIRECTORS RECOMMENDS THAT YOU VOTE FOR ITS NINE NOMINEES.
 
    3.  To approve an amendment to BOC's 1998 Stock Plan to permit Stock Awards
to be assumed by another party to a merger in which BOC disappears.
 
    THE BOARD OF DIRECTORS RECOMMENDS THAT YOU VOTE FOR THIS PROPOSAL.
 
    4.  To approve an amendment to BOC's 1998 Stock Plan to be adopted by the
Board of Directors if the transaction contemplated in the agreement does not
occur. The amendment would increase the number of shares of common stock
available for stock awards under the plan from 1,000,000 shares to 1,500,000
shares.
 
    THE BOARD OF DIRECTORS RECOMMENDS THAT YOU VOTE FOR THIS PROPOSAL.
 
    5.  To transact such other business as may properly come before the Annual
Meeting and any adjournment or adjournments thereof.
 
    The Board of Directors has fixed April 30, 1999 as the record date for the
Annual Meeting. Only shareholders of record at the close of business on that
date are entitled to notice of, and to vote at, the Annual Meeting or at any
adjournments or postponements of it.
 
                                          By Order of the Board of Directors
 
                                                   [LOGO]
 
                                          Gary D. Cristofani, Secretary
 
[date], 1999
 
WHETHER OR NOT YOU PLAN TO ATTEND THE ANNUAL MEETING IN PERSON, PLEASE COMPLETE,
DATE, SIGN AND RETURN THE ENCLOSED PROXY CARD IN THE ENCLOSED ENVELOPE, WHICH
REQUIRES NO POSTAGE IF MAILED IN THE UNITED STATES. IF YOU ATTEND THE ANNUAL
MEETING, YOU MAY VOTE IN PERSON IF YOU WISH, EVEN IF YOU HAVE PREVIOUSLY
RETURNED YOUR PROXY CARD.
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                                     <C>
SUMMARY...............................................................................          1
  The Merger..........................................................................          1
  Comparative per Share Market Price Information......................................          2
  The Companies.......................................................................          2
  The Bank of Commerce Annual Meeting.................................................          3
  Record Date; Vote Required..........................................................          3
  Our Reasons for the Merger..........................................................          3
  Our Recommendation to Shareholders..................................................          4
  Opinion of BOC's Financial Advisor..................................................          4
  Conditions to Completion of the Merger..............................................          4
  Termination of the Agreement; Expenses..............................................          4
  Waiver and Amendment................................................................          5
  Accounting Treatment................................................................          5
  Regulatory Approvals................................................................          5
  Interests of Directors and Officers in the Merger That Differ from Your Interests...          5
  Material Federal Income Tax Consequences............................................          6
  Material Differences in the Rights of Shareholders..................................          6
  Forward-looking Statements May Prove Inaccurate.....................................          6
  Unaudited Comparative per Common Share Data of BOC and USB..........................          7
  Selected Financial Data.............................................................          8
  Selected Historical Financial Data of U.S. Bancorp..................................          9
  Selected Historical Financial Data of Bank of Commerce..............................         11
 
THE BANK OF COMMERCE ANNUAL MEETING...................................................         14
  General.............................................................................         14
  Matters to be Considered............................................................         14
  Proxies.............................................................................         14
  Solicitation of Proxies.............................................................         14
  Record Date and Voting Rights.......................................................         15
  Recommendation of the BOC Board of Directors........................................         15
 
THE MERGER (PROPOSAL 1)...............................................................         16
  General.............................................................................         16
  The Merger..........................................................................         16
  Conversion of Stock; Treatment of Options...........................................         16
  Background of the Merger............................................................         17
  Recommendation of the BOC Board of Directors and BOC's Reasons for the Merger.......         19
  Opinion of BOC's Financial Advisor..................................................         21
  Exchange of Certificates; Fractional Shares.........................................         26
  Effective Time......................................................................         27
  Representations and Warranties......................................................         27
  Conduct of Business Pending the Merger and Other Agreements.........................         27
  Limitation on Acquisition Proposals.................................................         28
  Conditions to Completion of the Merger..............................................         28
  Regulatory Approvals Required for the Merger........................................         30
  Termination of the Agreement........................................................         31
  Extension, Waiver and Amendment of the Agreement....................................         33
  Stock Exchange Listing..............................................................         34
</TABLE>
 
                                       i
<PAGE>
<TABLE>
<S>                                                                                     <C>
  Expenses............................................................................         34
  Indemnification of BOC Directors and Officers by USB................................         34
  Interests of Certain Persons in the Merger..........................................         34
  Restrictions on Resales by Affiliates...............................................         37
  Bank of Commerce Employee Stock Purchase Plan and Employee Stock Ownership Plan.....         38
  Material Federal Income Tax Consequences............................................         38
  Accounting Treatment................................................................         39
 
PRICE RANGE OF COMMON STOCK AND DIVIDENDS.............................................         40
 
INFORMATION ABOUT U.S. BANCORP........................................................         41
  General.............................................................................         41
  Government Policies.................................................................         42
  Supervision and Regulation..........................................................         42
  Additional Information..............................................................         42
 
INFORMATION ABOUT BANK OF COMMERCE....................................................         42
  General.............................................................................         42
  Additional Information..............................................................         43
 
ELECTION OF DIRECTORS OF BANK OF COMMERCE (PROPOSAL 2)................................         44
  Nominees............................................................................         44
  Executive Officers..................................................................         45
  Securities Ownership of Executive Officers, Directors and Others....................         45
  Meetings and Committees.............................................................         47
 
EXECUTIVE AND DIRECTOR COMPENSATION OF BANK OF COMMERCE...............................         47
  Director Remuneration...............................................................         47
  Executive Compensation..............................................................         48
  Chief Executive Officer Compensation and Benefits Agreement.........................         52
  Chief Executive Officer Salary Continuation Agreement...............................         54
  CEO Disability Policy...............................................................         56
  Senior Executive Vice President and Executive Vice President Employment
Agreements............................................................................         56
  Senior Executive Vice President Salary Continuation Agreement.......................         57
  Senior Executive Vice President Disability Policy...................................         60
  Stock Plans.........................................................................         61
  Equity Participation Plan...........................................................         61
  Stock Purchase Plan.................................................................         63
  Employee Stock Ownership Plan.......................................................         64
  Bank of Commerce 401(k) Plan........................................................         64
  Certain Other Compensation..........................................................         64
  Certain Transactions................................................................         64
 
REPORT OF BANK OF COMMERCE COMPENSATION COMMITTEE.....................................         65
  Compensation Philosophy.............................................................         65
  Setting Compensation of the Executive Officers......................................         65
  1998 Compensation Matters...........................................................         66
  Compensation Committee, Interlocks and Insider Participation........................         66
  Return to Shareholders Performance Graph............................................         66
  Compliance with Filing Requirements.................................................         67
</TABLE>
 
                                       ii
<PAGE>
<TABLE>
<S>                                                                                     <C>
AMENDMENT OF BOC 1998 STOCK PLAN TO PERMIT STOCK AWARDS TO BE ASSUMED BY USB IN THE
  MERGER (PROPOSAL 3).................................................................         68
  General.............................................................................         68
  Purpose.............................................................................         68
  Types of Awards.....................................................................         69
  Administration......................................................................         69
  Shares Subject to the Plan..........................................................         69
  Eligibility.........................................................................         69
  Term and Termination................................................................         69
  Exercise Price......................................................................         70
  Consideration.......................................................................         70
  Transferability.....................................................................         70
  Vesting.............................................................................         70
  Adjustments Upon Change in Stock....................................................         71
  Amendment...........................................................................         71
  Termination or Suspension...........................................................         71
  Federal Income Tax Information......................................................         72
  Vote Required.......................................................................         73
 
AMENDMENT OF BOC 1998 STOCK PLAN TO INCREASE THE NUMBER OF AGGREGATE SHARES AVAILABLE
  TO 1,500,000 (PROPOSAL 4)...........................................................         73
  Vote Required.......................................................................         73
 
DESCRIPTION OF USB CAPITAL STOCK AND COMPARISON OF SHAREHOLDER RIGHTS.................         73
  Description of USB Capital Stock....................................................         74
  Certain Provisions of the USB Certificate and USB Bylaws............................         78
  Comparison of Rights of USB Shareholders and BOC Shareholders.......................         79
 
DISSENTERS' APPRAISAL RIGHTS..........................................................         87
  Eligibility.........................................................................         87
  Demand..............................................................................         87
  Valuation...........................................................................         88
  Payment.............................................................................         89
 
LEGAL MATTERS.........................................................................         89
 
EXPERTS...............................................................................         89
 
SHAREHOLDER PROPOSALS.................................................................         89
 
OTHER MATTERS.........................................................................         90
 
WHERE YOU CAN FIND MORE INFORMATION...................................................         90
  Information Regarding USB...........................................................         90
  Information Regarding BOC...........................................................         91
  Information Regarding USB and BOC...................................................         91
 
FORWARD-LOOKING STATEMENTS............................................................         92
 
INDEX OF DEFINED TERMS................................................................         93
</TABLE>
 
                                      iii
<PAGE>
<TABLE>
<S>                                                                                     <C>
APPENDIX A AGREEMENT AND PLAN OF REORGANIZATION.......................................        A-1
 
APPENDIX B OPINION OF KEEFE, BRUYETTE & WOODS, INC....................................        B-1
 
APPENDIX C CALIFORNIA CORPORATION CODE SECTION DEALING WITH DISSENTER'S RIGHTS........        C-1
 
APPENDIX D SECTION 215a OF TITLE 12 OF THE UNITED STATES CODE.........................        D-1
</TABLE>
 
                                       iv
<PAGE>
                                    SUMMARY
 
    This brief summary highlights selected information from the Proxy
Statement/Prospectus. It does not contain all of the information that is
important to you. We urge you to carefully read the entire Proxy
Statement/Prospectus and the other documents to which this document refers to
fully understand the merger. See "WHERE YOU CAN FIND MORE INFORMATION."
 
THE MERGER (PAGE 16)
 
WE'VE ATTACHED THE AGREEMENT BETWEEN USB AND BOC TO THIS DOCUMENT AS APPENDIX A.
PLEASE READ THE AGREEMENT. IT IS THE LEGAL DOCUMENT THAT GOVERNS THE MERGER.
 
GENERAL
 
We propose a transaction in which Bank of Commerce ("BOC") will merge into a
subsidiary of U.S. Bancorp ("USB"). After the merger, you will no longer own
shares of BOC, and your shares of BOC common stock will be exchanged for shares
of USB common stock as described below. Subject to obtaining the approvals we
require, we expect to complete the merger in early July 1999.
 
A brief description of USB can be found under the caption "INFORMATION ABOUT
U.S. BANCORP." More complete information on the management and operations of USB
can be found in USB's public reports. See "WHERE YOU CAN FIND MORE INFORMATION."
 
CONVERSION OF SHARES (PAGE 16)
 
After completion of the merger, you will have the right to receive from USB a
number of shares of USB common stock, which will be determined by the exchange
ratio. According to the exchange ratio agreed to by USB and BOC, you will
receive 0.60 shares of USB common stock for each share of BOC common stock that
you hold. However, if the average USB stock price for the 20 consecutive trading
days ending three days before we close the merger is either greater than $40 or
less than $30, that exchange ratio will be adjusted. If that average USB stock
price is greater than $40, you will receive USB shares valued at $24, using that
average price, for each BOC share. If that average USB stock price is less than
$30, you will receive USB shares valued at $18, using that average price, for
each BOC share.
 
You will have to surrender your BOC common stock certificates to receive new
certificates representing common stock of USB. This will not be necessary until
you receive written instructions after we have completed the merger.
 
DO NOT SEND STOCK CERTIFICATES WITH YOUR PROXY CARD.
 
BOC STOCK OPTIONS (PAGE 17)
 
In the merger, each stock option to buy BOC common stock granted under BOC's
stock option plans and each of BOC's outstanding warrants, in each case
immediately before completing the merger, will become an option or warrant, as
applicable, to buy USB common stock. Each option will continue to be governed by
the terms of the BOC stock option plan and agreement under which it was granted,
and the BOC warrants will continue to be governed by the terms of the BOC
warrant certificates. The number of shares of USB common stock subject to each
new stock option or warrant, as well as the exercise price of that stock option
or warrant, will be adjusted to reflect the exchange ratio in the merger.
 
DISSENTERS' RIGHTS (PAGE 87)
 
Holders of BOC common stock who do not vote in favor of the merger and who have
fully complied with all applicable provisions of Section 215a of Title 12 of the
United States Code may have the right to require USB to purchase the shares of
BOC common stock held by them for cash at the fair market value of those shares
on the day prior to the date the merger was announced. See "DISSENTERS'
APPRAISAL RIGHTS" herein. See Appendix C, which is a copy of the relevant
provisions of the California Corporation Code dealing with the valuation of BOC
shares, and Appendix D, which is a copy of Section 215a. The value of the
dissenting shares, determined in accordance with California law, may be more or
less than the
 
<PAGE>
value of the shares of USB common stock to be received in connection with the
merger.
 
COMPARATIVE PER SHARE MARKET PRICE INFORMATION
 
Shares of USB common stock are listed on the New York Stock Exchange and shares
of BOC common stock are listed on the Nasdaq Stock Market. On February 18, 1999,
the last trading day before we announced the merger, USB common stock closed at
$32.938 per share and BOC common stock closed at $17.06 per share. On [last day
prior to mailing date], 1999, USB common stock closed at $[price] per share and
BOC common stock closed at $[price] per share.
 
Based on the exchange ratio of 0.60 shares of common stock for each share of BOC
common stock, the market value of the consideration that BOC shareholders will
receive in the merger for each share of BOC common stock would be $19.76 based
on USB's closing stock price on February 18, 1999, and $[price] based on USB's
closing stock price on [last day prior to mailing date], 1999. Of course, the
market price of USB common stock will fluctuate prior to the merger, and the
exchange ratio may be adjusted as described above. You should obtain current
stock price quotations for USB common stock and BOC common stock.
 
THE COMPANIES (PAGES 41 AND 42)
U.S. BANCORP
US Bank Place
601 Second Avenue South
MINNEAPOLIS, MINNESOTA 55402-9302
(612) 973-1111
 
USB is a regional multi-state bank holding company with headquarters in
Minneapolis, Minnesota. USB operates five banks and eleven trust companies with
offices in 17 Midwestern and Western states. USB offers full-service brokerage
services at approximately 100 offices through a wholly owned subsidiary. The
banking subsidiaries of USB are engaged in general retail and commercial banking
business, and provide a wide variety of services to individuals, businesses,
industry, institutional organizations, governmental entities and other financial
institutions. USB also has various other subsidiaries engaged in financial
services.
At December 31, 1998, USB's assets totaled $76.4 billion. Our market
capitalization of nearly $26 billion at year-end 1998 placed us eighth among
U.S. bank holding companies. USB reported 1998 return on average assets of 2.03
percent, return on average common equity of 24.1 percent and an efficiency ratio
of 49.1 percent, before nonrecurring items. Without the impact of investment
banking and brokerage operations, our efficiency ratio was 44.2 percent.
 
For further information concerning USB, see "INFORMATION ABOUT U.S. BANCORP" and
"SUMMARY--Selected Historical Financial Data of U.S. Bancorp" herein and the USB
documents incorporated by reference herein as described under "WHERE YOU CAN
FIND MORE INFORMATION."
 
BANK OF COMMERCE
600 West Broadway, Suite 100
San Diego, CA 92101
(619) 232-2096
 
BOC is a California state bank headquartered in San Diego, California with nine
other full-service branches in Southern California. BOC also has three loan
production offices located in Southern California, three loan production offices
located in Northern California and seventeen loan production offices outside of
California, in Las Vegas and Reno, Nevada; Phoenix and Tucson, Arizona;
Portland, Oregon; Seattle and Spokane, Washington; Austin, Houston, Dallas and
San Antonio, Texas; Salt Lake City, Utah; Chicago, Illinois; Atlanta, Georgia;
Boise, Idaho; Albuquerque, New Mexico; and Denver, Colorado. BOC is the largest
locally owned commercial bank headquartered in San Diego County and is the
leading bank Small Business Administration ("SBA") lender in the United States.
 
BOC provides a broad range of financial products and services through electronic
and traditional channels, and a full range of banking and financial services to
commercial, corporate, real estate and small business customers in California
including consumer finance, trade financing, letters of credit, collection and
various banking-related services.
 
                                       2
<PAGE>
At December 31, 1998, BOC's assets were $638.2 million, its deposits were $571.9
million and its shareholders' equity was $61 million.
 
For further information concerning BOC, see "INFORMATION ABOUT BANK OF COMMERCE"
and "SUMMARY--Selected Historical Financial Data of Bank of Commerce" herein.
You can obtain additional information on BOC from the other documents that are
incorporated herein by reference. See "WHERE YOU CAN FIND MORE INFORMATION."
 
THE BANK OF COMMERCE ANNUAL MEETING (PAGE 14)
 
    The Annual Meeting will be held on June 15, 1999, at 6:00 p.m. local time,
at the Hyatt Regency, San Diego, One Market Place, San Diego, California 92101.
At the meeting, the BOC shareholders will be asked:
 
    1.  To consider and vote on the merger agreement between BOC and USB which
provides for the merger of BOC into a subsidiary of USB.
 
    2.  To elect nine persons as directors.
 
    3.  To approve an amendment to the 1998 Stock Plan to permit Stock Awards to
be assumed by another party to a merger.
 
    4.  To authorize an increase in the aggregate shares available under the
1998 Stock Plan.
 
    5.  To transact such other business as may properly come before the Annual
Meeting and any adjournment or adjournments thereof.
 
RECORD DATE; VOTE REQUIRED (PAGE 15)
 
You can vote at the Annual Meeting if you owned BOC common stock at the close of
business on April 30, 1999. You can cast one vote for each share of BOC common
stock you owned at that time. To adopt the agreement, the holders of two-thirds
of the outstanding shares of BOC common stock allowed to vote at the meeting
must vote in favor of doing so.
 
Each of the members of the BOC Board of Directors and each executive officer of
BOC has agreed to vote his or her shares of BOC common stock in favor of the
merger. As of March 31, 1999, these directors and executive officers together
were the beneficial owners of 3,230,573 shares (or 21%) of BOC common stock.
 
If you are the registered owner of your shares, you may vote them in person by
attending the Annual Meeting or by mailing us your proxy if you are unable or do
not wish to attend. If your shares are deposited with a broker, they will advise
you about the meeting and how to instruct them to vote your shares (usually by
signing and returning your proxy card to them). You can revoke your proxy at any
time before we take a vote at the meeting by sending a written notice revoking
the proxy or a later-dated proxy to the secretary of BOC, or by attending the
meeting and voting in person.
 
OUR REASONS FOR THE MERGER (PAGE 19)
 
In September and October 1998, the Board of Directors of BOC reviewed
alternatives for the future direction of BOC. It considered various
alternatives, including potential growth through acquisition, maintaining
internal growth, and seeking a negotiated sale of BOC. Developments in the SBA
lending business and the competitive environment in the California banking and
financial services industry were also considered by the Board of Directors. The
only alternative that would likely produce enhanced returns for the shareholders
of BOC would be for BOC to join with a significantly larger organization.
 
In order to explore the possibility of a business combination, BOC engaged
Keefe, Bruyette and Woods, Inc. With the assistance of BOC senior management,
Keefe, Bruyette and Woods, Inc. evaluated potential candidates and solicited
preliminary indications of interest. Two written proposals were submitted on
December 9, 1998. One of these was a proposal from USB. The Board of Directors
of BOC determined that the USB proposal should be pursued and from December 16,
1998 through February 17, 1999, the parties negotiated the terms of the
transaction for which your approval is now sought.
 
After reviewing the proposed merger and evaluating the operations and prospects
of BOC and USB with its financial advisors and legal advisors, the Board of
Directors of BOC believes
 
                                       3
<PAGE>
that the merger is in the best interests BOC, its shareholders and customers and
the communities which it serves. USB can offer a range of services to BOC
customers that BOC cannot currently offer. It can also finance and support the
continued growth of BOC's SBA lending business in BOC's current locations and in
states where USB has operations but BOC does not. The merger would result in a
14% premium for your shares of BOC, based on the closing prices of USB Common
Stock and BOC Common Stock on February 17, 1999. The BOC Board of Directors
believes that a combination with USB offers you the opportunity of an increased
return on your shares.
 
OUR RECOMMENDATION TO SHAREHOLDERS (PAGE 19)
 
The Board of Directors of BOC believes that the merger is fair to you and in
your best interests, and unanimously recommends that you vote "FOR" the proposal
to approve the terms of the agreement between BOC and USB providing for the
merger.
 
OPINION OF BOC'S FINANCIAL ADVISOR (PAGES 21 AND B-1)
 
Keefe, Bruyette & Woods, Inc. has delivered its written opinion to the BOC Board
of Directors stating that, as of the date of this Proxy/ Prospectus, the
exchange ratio is fair to the holders of BOC common stock from a financial point
of view. We have attached the opinion to this document as Appendix B. You should
read it completely to understand the assumptions made, matters considered and
limitations of the review undertaken by Keefe, Bruyette & Woods, Inc. in
providing their opinion. If we complete the merger, BOC will pay to Keefe,
Bruyette & Woods, Inc., a cash fee equal to 1% of the market value of the
aggregate consideration given by USB. BOC has also agreed to reimburse Keefe,
Bruyette & Woods, Inc. for its reasonable out-of-pocket expenses, disbursements,
and liabilities assumed, related to their engagement. Based on the closing price
of USB stock on February 17, 1999 of $32, the date the Board of Directors of BOC
approved the transaction, if the merger had closed on that date, Keefe, Bruyette
& Woods, Inc. would have been entitled to a payment of $2.96 million.
CONDITIONS TO COMPLETION OF THE MERGER (PAGE 28)
 
The completion of the merger depends on a number of conditions being met. These
include:
 
    1.  approval of the merger and the agreement by two-thirds of the BOC
        shareholders;
 
    2.  approval of the merger by certain federal and state regulatory
        authorities;
 
    3.  approval by the New York Stock Exchange of the listing of the shares of
        USB common stock to be issued in the merger; and
 
    4.  the absence of any injunction or legal restraint blocking the merger, or
        of any proceedings by a government body trying to block the merger.
 
Either BOC or USB could choose to complete the merger even though a condition
has not been satisfied, as long as the law allows it to do so. We can't be
certain when, or if, the conditions to the merger will be satisfied or waived,
or that the merger will be completed.
 
TERMINATION OF THE AGREEMENT; EXPENSES (PAGE 31)
 
We can agree at any time to terminate our agreement without completing the
merger. Also, either of us can decide, without the consent of the other, to
terminate our agreement if:
 
    1.  the other company breaches our agreement in a material way, and the
        breaching party doesn't correct the breach within 30 days;
 
    2.  the merger has not been completed by September 30, 1999, unless the
        failure to complete the merger by that time is due to a violation of our
        agreement by the party that wants to terminate our agreement;
 
    3.  any government agency denies an approval we need to complete the merger,
        and that denial has become final and nonappealable; or
 
                                       4
<PAGE>
    4.  if BOC does not obtain shareholder approval.
 
USB may also terminate our agreement if the BOC Board of Directors withdraws or
modifies, in some way adverse to USB, its recommendation to the BOC shareholders
to approve the merger prior to the conclusion of the Annual Meeting.
 
If our agreement is terminated and the merger abandoned under a certain set of
circumstances, BOC will pay to USB $10,000,000 as a termination fee. BOC would
only be required to pay this fee if, within 12 months of termination of our
agreement, BOC signs an agreement with a party other than USB to merge or
consolidate, or to sell substantially all of BOC's assets, or to sell more than
51% of BOC's voting shares, or completes such a transaction, and previously one
of the following events occurred:
 
    1.  BOC entered into an agreement to merge or consolidate, or to sell or
        lease substantially all of BOC's assets, or to sell more than 20% of
        BOC's voting shares (or the BOC Board of Directors recommended that the
        BOC shareholders approve such a transaction); or
 
    2.  the BOC Board of Directors has withdrawn or modified, in some way
        adverse to USB, its recommendation to the BOC shareholders to approve
        the merger; or
 
    3.  Another entity has publicly announced that it has made a proposal to BOC
        to merge or consolidate or buy substantially all of BOC's assets or to
        buy over 20% of BOC's voting shares.
 
WAIVER AND AMENDMENT (PAGE 33)
 
We may jointly amend our agreement, and each of us may waive our right to
require the other party to adhere to the terms and conditions of our agreement.
However, we may not amend our agreement after the BOC shareholders approve the
merger, if the amendment or waiver reduces or changes the consideration that
will be received by BOC shareholders.
 
ACCOUNTING TREATMENT (PAGE 39)
We expect to account for the merger using the purchase method of accounting
under generally accepted accounting principles ("GAAP").
 
REGULATORY APPROVALS (PAGE 30)
 
We can't complete the merger unless it is approved by the Office of the
Comptroller of the Currency. Once the Comptroller approves the merger, we have
to wait anywhere from 15 to 30 days before we can complete the merger, during
which time the Department of Justice can challenge the merger.
 
In addition, the merger is subject to the approval of, or notice to state and
other regulatory authorities.
 
We have filed all of the required applications or notices with the Comptroller
and these other regulatory authorities.
 
As of the date of this document, we haven't received all of the required
approvals. While we don't know of any reason that we would not be able to obtain
the necessary approvals in a timely manner, we can't be certain when or if we
will get them.
 
INTERESTS OF DIRECTORS AND OFFICERS IN THE MERGER THAT DIFFER FROM YOUR
INTERESTS (PAGE 34)
 
The interests of certain executive officers of BOC are somewhat different than
yours as a result of their employment arrangements with BOC and certain new
arrangements entered into in connection with the merger.
 
All of the members of the Board of Directors of BOC and the executive officers
have entered into new affiliate agreements with USB under which they agree to
vote their shares in favor of the merger. They also agree that the shares of USB
common stock that they receive in connection with this merger will be legended
and subject to restrictions on sale imposed by Rule 145 of the Securities and
Exchange Commission.
 
Mr. Davis has entered into a new employment agreement with USB that runs through
November 30, 2000. Mr. Bartram has entered into a new employment agreement with
USB that runs
 
                                       5
<PAGE>
for a period of two years after the closing of the merger. Both Mr. Davis' and
Mr. Bartram's base salaries remain roughly the same as under their current
arrangements. Some other compensation each of them would have received under
their existing arrangements is eliminated, some is continued, and some is
delayed. However, in the event one of them is terminated without cause prior to
the expiration of his employment agreement, he will receive continued salary for
a period of time. At the closing of the merger Mr. Davis and Mr. Bartram will
each be granted a new stock option to purchase 24,000 shares of USB common
stock, and $250,000 of restricted shares of USB stock. Much of Mr. Davis' and
Mr. Bartram's compensation is conditioned on compliance with an agreement to
maintain confidentiality of BOC and USB trade secrets and not becoming employed
by a competitor or otherwise competing with USB for a period of time after the
merger.
 
The BOC Board of Directors knew about these additional interests, and considered
them, when it approved the merger agreement and the merger.
 
MATERIAL FEDERAL INCOME TAX CONSEQUENCES (PAGE 38)
 
We expect that for United States federal income tax purposes, your exchange of
shares of BOC common stock for shares of USB common stock generally will not
cause you to recognize any gain or loss. You will, however, have to recognize
gain or loss in connection with any cash you receive instead of fractional
shares.
 
THIS TAX TREATMENT MAY NOT APPLY TO EVERY BOC SHAREHOLDER. DETERMINING THE
ACTUAL TAX CONSEQUENCES OF THE MERGER TO YOU MAY BE COMPLICATED. THEY WILL
DEPEND ON YOUR SPECIFIC SITUATION AND ON SPECIAL FACTS NOT WITHIN OUR CONTROL.
YOU SHOULD CONSULT YOUR OWN TAX ADVISOR FOR A FULL UNDERSTANDING OF THE MERGER'S
TAX CONSEQUENCES.
 
MATERIAL DIFFERENCES IN THE RIGHTS OF SHAREHOLDERS (PAGE 79)
 
The rights of USB shareholders are governed by Delaware law and USB's
Certificate of Incorporation and By-Laws. The rights of BOC shareholders are
currently governed by California law and BOC's Articles of Incorporation and
Bylaws. Upon our completing the merger, you will become a shareholder of USB,
and your rights will be governed by Delaware law and by USB's Certificate of
Incorporation and Bylaws.
 
FORWARD-LOOKING STATEMENTS MAY PROVE INACCURATE (PAGE 92)
 
We have each made forward-looking statements in this document (and in documents
to which we refer you in this document) that are subject to risks and
uncertainties. These forward-looking statements include information about
possible or assumed future results of our respective operations, the performance
of USB after the merger is completed and our expectations regarding the merger.
When we use any of the words "believes," "expects," "anticipates," "estimates"
or similar expressions, we are making forward-looking statements. Many possible
events or factors could affect the future financial results and performance of
each of our companies and the performance of USB after the merger and could
cause those results or performance to differ materially from those expressed in
our forward-looking statements. These possible events or factors include the
following:
 
    1.  competition among financial services companies increases;
 
    2.  changes in the interest rate environment that reduce our interest
        margins;
 
    3.  general economic conditions change or are worse than we expected;
 
    4.  legislative or regulatory changes adversely affect our business or the
        merger;
 
    5.  technology-related changes, including "Year 2000" data systems
        compliance, are harder to identify or make or more expensive than we
        expected.
 
                                       6
<PAGE>
                  UNAUDITED COMPARATIVE PER COMMON SHARE DATA
                                 OF BOC AND USB
 
    The following table presents selected comparative unaudited per share data
for USB on a historical and pro forma combined basis, and for BOC on a
historical and pro forma equivalent basis, giving effect to the merger using the
purchase method of accounting. The information presented below is derived from
the consolidated historical financial statements of USB and BOC, including the
related notes thereto, incorporated by reference into this Proxy
Statement/Prospectus. This information should be read in conjunction with such
historical financial statements and the related notes thereto. See "WHERE YOU
CAN FIND MORE INFORMATION."
 
    The per share data included within is not necessarily indicative of the
results of future operations of the combined entity or the actual results that
would have been achieved had the merger been consummated prior to the periods
indicated.
 
    The pro forma combined book values per share of USB Common Stock are based
upon the pro forma total common equity for USB and BOC, divided by the total pro
forma shares of USB Common Stock assuming conversion of BOC Common Stock at an
exchange ratio of 0.60 shares of USB Common Stock for each share of BOC Common
Stock (the "PRO FORMA EXCHANGE RATIO"). The pro forma equivalent book values per
share of BOC Common Stock represent the pro forma combined amounts multiplied by
the Pro Forma Exchange Ratio. The pro forma combined dividends declared assume
no changes in the historical dividends declared per share of USB Common Stock.
The pro forma equivalent dividends per share of BOC Common Stock represent the
cash dividends declared on a share of USB Common Stock multiplied by the Pro
Forma Exchange Ratio. The pro forma combined net income per share has been
computed based on the average number of outstanding shares and common equivalent
shares of USB, and the average number of outstanding shares of BOC Common Stock
adjusted for the Pro Forma Exchange Ratio. The pro forma equivalent net income
per share of BOC Common Stock represents the pro forma combined net income
multiplied by the Pro Forma Exchange Ratio.
 
<TABLE>
<CAPTION>
                                                    USB COMMON STOCK          BOC COMMON STOCK
                                                ------------------------  ------------------------
                                                              PRO FORMA                 PRO FORMA
                                                HISTORICAL    COMBINED    HISTORICAL   EQUIVALENT
                                                -----------  -----------  -----------  -----------
<S>                                             <C>          <C>          <C>          <C>
BOOK VALUE:
  December 31, 1998...........................   $    8.23    $    8.54    $    4.20    $    5.12
 
DIVIDENDS DECLARED:
  Year ended December 31, 1998................        0.70         0.70         0.13         0.42
 
NET INCOME:
  Year ended December 31, 1998................        1.81         1.79         0.92         1.07
</TABLE>
 
                                       7
<PAGE>
                            SELECTED FINANCIAL DATA
 
    In the following tables, we provide you with summary historical financial
data of USB and BOC. We have prepared this information using the consolidated
financial statements of USB and BOC for the five years ended December 31, 1998.
The USB financial statements for the four years ended December 31, 1998 have
been audited by Ernst & Young LLP, independent auditors. The USB financial
statements for the year ended December 31, 1994 have been restated to give
effect to the merger of First Bank System, Inc. and U.S. Bancorp using the
pooling of interest method of accounting. The BOC summary historical financial
data as of December 31, 1998 and 1997 and for each of the three years in the
period ended December 31, 1998 are derived from the audited historical financial
statements of BOC which have been audited by Deloitte & Touche LLP, independent
auditors, and are incorporated by reference in this Proxy Statement/Prospectus.
The BOC summary historical financial data as of December 31, 1996, 1995 and
1994, and for each of the two years in the period ended December 31, 1995 are
derived from the audited historical financial statements of BOC which are not
incorporated by reference in this Proxy Statement/Prospectus. All of the BOC
summary historical financial data are restated to reflect the pooling of
interests combination with Rancho Vista National Bank ("RVNB"), and the two
stock splits in 1997.
 
    When you read this summary historical data, it is important that you read
along with it the historical financial statements and related notes in the
annual reports filed by USB with the Securities and Exchange Commission and by
BOC with the Board of Governors of the Federal Reserve System, as well as the
section of the annual reports titled "Management's Discussion and Analysis of
Financial Condition and Results of Operations." See "WHERE YOU CAN FIND MORE
INFORMATION" on page 90.
 
                                       8
<PAGE>
                       SELECTED HISTORICAL FINANCIAL DATA
                                OF U.S. BANCORP
<TABLE>
<CAPTION>
                                                                         YEAR ENDED DECEMBER 31,
                                                          -----------------------------------------------------
<S>                                                       <C>        <C>        <C>        <C>        <C>
CONDENSED INCOME STATEMENT:                                 1998       1997       1996       1995       1994
                                                          ---------  ---------  ---------  ---------  ---------
 
<CAPTION>
                                                              (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                                                       <C>        <C>        <C>        <C>        <C>
Net interest income (taxable-equivalent basis)..........  $ 3,111.9  $ 3,106.0  $ 3,034.7  $ 2,886.6  $ 2,809.6
Provision for credit losses.............................      379.0      460.3      271.2      239.1      243.7
                                                          ---------  ---------  ---------  ---------  ---------
  Net interest income after provision for credit
    losses..............................................    2,732.9    2,645.7    2,763.5    2,647.5    2,565.9
Securities gains (losses)...............................       12.6        3.6       20.8        3.0     (124.2)
Other nonrecurring gains................................         --        9.4      330.6       44.8       52.6
Other noninterest income................................    2,244.0    1,602.2    1,431.7    1,265.5    1,186.5
Restructuring and merger-related charges................      216.5      511.6       88.1       98.9      225.3
Other nonrecurring charges..............................         --         --      118.2       38.2       27.2
Other noninterest expense...............................    2,627.8    2,300.7    2,331.8    2,338.8    2,479.6
                                                          ---------  ---------  ---------  ---------  ---------
Income from continuing operations before income taxes...    2,145.2    1,448.6    2,008.5    1,484.9      948.7
Taxable-equivalent adjustment...........................       51.3       57.9       64.1       63.9       69.0
Income taxes............................................      766.5      552.2      725.7      523.9      311.5
                                                          ---------  ---------  ---------  ---------  ---------
Income from continuing operations.......................    1,327.4      838.5    1,218.7      897.1      568.2
Loss from discontinued operations.......................         --         --         --         --       (8.5)
                                                          ---------  ---------  ---------  ---------  ---------
Net income..............................................  $ 1,327.4  $   838.5  $ 1,218.7  $   897.1  $   559.7
                                                          ---------  ---------  ---------  ---------  ---------
FINANCIAL RATIOS:
Return on average assets................................       1.85%      1.22%      1.81%      1.42%       .89%
Return on average common equity.........................       21.9       14.6       21.1       17.2       10.9
Efficiency ratio........................................       53.1       59.6       52.9       59.0       67.5
Net interest margin.....................................       4.87       5.04       5.04       5.10       4.99
SELECTED FINANCIAL RATIOS BEFORE RESTRUCTURING AND
  MERGER-RELATED CHARGES AND OTHER NONRECURRING ITEMS:
Diluted earnings per share..............................  $    1.96  $    1.68  $    1.47  $    1.23  $     .98
Return on average assets................................       2.03%      1.83%      1.69%      1.51%      1.23%
Return on average common equity.........................       24.1       22.0       19.8       18.3       15.3
Efficiency ratio........................................       49.1       48.9       52.2       56.3       62.1
Banking efficiency ratio*...............................       44.2       47.9       51.5       55.8       61.4
PER COMMON SHARE:
Earnings per share from continuing operations...........  $    1.81  $    1.13  $    1.60  $    1.19  $     .73
  Loss from discontinued operations.....................         --         --         --         --       (.01)
                                                          ---------  ---------  ---------  ---------  ---------
Earnings per share......................................  $    1.81  $    1.13  $    1.60  $    1.19  $     .72
                                                          ---------  ---------  ---------  ---------  ---------
Diluted earnings per share from continuing operations...  $    1.78  $    1.11  $    1.57  $    1.16  $     .71
Loss from discontinued operations.......................         --         --         --         --       (.01)
                                                          ---------  ---------  ---------  ---------  ---------
Diluted earnings per share..............................  $    1.78  $    1.11  $    1.57  $    1.16  $     .70
                                                          ---------  ---------  ---------  ---------  ---------
Dividends paid**........................................  $     .70  $     .62  $     .55  $     .48  $     .39
</TABLE>
 
                                       9
<PAGE>
<TABLE>
<CAPTION>
                                                                            YEAR ENDED DECEMBER 31,
                                                             -----------------------------------------------------
<S>                                                          <C>        <C>        <C>        <C>        <C>
                                                               1998       1997       1996       1995       1994
                                                             ---------  ---------  ---------  ---------  ---------
 
<CAPTION>
                                                                 (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                                                          <C>        <C>        <C>        <C>        <C>
AVERAGE BALANCE SHEET DATA:
Loans......................................................  $  55,979  $  53,513  $  50,855  $  47,703  $  44,584
Earning assets.............................................     63,868     61,675     60,201     56,556     56,233
Assets.....................................................     71,791     68,771     67,402     63,084     62,708
Deposits...................................................     47,327     47,336     47,252     44,726     46,146
Long-term debt.............................................     11,481      7,527      4,908      4,162      3,796
Common equity..............................................      6,049      5,667      5,679      5,090      4,887
Total shareholders' equity.................................      6,049      5,798      5,919      5,345      5,180
YEAR-END BALANCE SHEET DATA:
Loans......................................................  $  59,122  $  54,708  $  52,355  $  49,345  $  46,375
Assets.....................................................     76,438     71,295     69,749     65,668     64,737
Deposits...................................................     50,034     49,027     49,356     45,779     46,115
Long-term debt.............................................     13,781     10,247      5,369      4,583      4,225
Common equity..............................................      5,970      5,890      5,613      5,089      4,837
Total shareholders' equity.................................      5,970      5,890      5,763      5,342      5,105
</TABLE>
 
- ------------
 
*   Without investment banking and brokerage activity.
 
**  Dividends per share have not been restated for the merger of First Bank
    System, Inc. and U.S. Bancorp of Portland, Oregon ("USBC") in August 1997
    and the merger of First Bank System, Inc. and Metropolitan Financial
    Corporation ("MFC") in February 1995. USBC paid common dividends of $139.1
    million through July of 1997 ($.62 per share), $168.7 million in 1996 ($1.18
    per share), $133.1 million in 1995 ($1.06 per share) and $116.0 million in
    1994 ($.94 per share). MFC paid common dividends of $25.1 million in 1994
    ($.80 per share).
 
                                       10
<PAGE>
                       SELECTED HISTORICAL FINANCIAL DATA
                              OF BANK OF COMMERCE
<TABLE>
<CAPTION>
                                                                   YEAR ENDED DECEMBER 31,
                                             --------------------------------------------------------------------
<S>                                          <C>           <C>           <C>           <C>           <C>
INCOME STATEMENT DATA:                           1998          1997          1996          1995          1994
                                             ------------  ------------  ------------  ------------  ------------
 
<CAPTION>
                                                        (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                          <C>           <C>           <C>           <C>           <C>
Total interest income......................  $     57,422  $     51,144  $     36,570  $     29,873  $     18,735
Total interest expense.....................        21,850        20,608        13,614        10,888         5,048
                                             ------------  ------------  ------------  ------------  ------------
  Net interest income before provision for
    credit losses..........................        35,572        30,536        22,956        18,985        13,687
Provision for credit losses................            60           496           862         1,479         1,351
                                             ------------  ------------  ------------  ------------  ------------
Net interest income after provision for
  credit losses............................        35,512        30,040        22,094        17,506        12,336
Gains on sales of loans....................        15,467         6,239         2,175         1,486         3,883
Other income...............................         6,427         4,121         3,949         5,378         3,799
Other expense..............................        34,231        26,341        20,685        19,895        17,987
                                             ------------  ------------  ------------  ------------  ------------
Income before taxes........................        23,175        14,059         7,533         4,475         2,031
Provision for income taxes.................         9,933         5,609         3,052         1,689           766
                                             ------------  ------------  ------------  ------------  ------------
Net income.................................  $     13,242  $      8,450  $      4,481  $      2,786  $      1,265
                                             ------------  ------------  ------------  ------------  ------------
Dividends on common shares.................  $      1,805  $      1,035  $        539  $        426  $        367
Common payout ratio........................         13.63%        12.25%        12.03%        15.29%        29.01%
Dividends on preferred shares..............  $         --  $         --  $        377  $        162  $         --
Preferred payout ratio.....................          0.00%         0.00%         8.41%         5.81%         0.00%
Total payout ratio.........................         13.63%        12.25%        20.44%        21.11%        29.01%
PER SHARE DATA (1):
Basic earnings per share...................  $       0.92  $       0.64  $       0.40  $       0.27  $       0.13
Diluted earnings per share.................  $       0.85  $       0.56  $       0.33  $       0.26  $       0.13
Dividends declared per common share........  $       0.13  $      0.093  $      0.066  $      0.058  $      0.050
Book value per common share................  $       4.20  $       3.32  $       2.82  $       2.65  $       2.42
SHARES OUTSTANDING (1):
Weighted average number of common shares
  outstanding..............................    14,404,857    13,270,091    10,275,811     9,870,491     9,843,704
Weighted average number of common shares
  and assumed conversions outstanding......    15,649,334    15,103,764    13,533,801    10,866,459    10,096,544
Common options and warrants outstanding at
  period end...............................     2,113,311     2,198,025     3,278,725     3,147,180       627,115
Common shares outstanding at period end....    14,544,689    14,123,208    12,587,073     9,935,268     9,872,768
Preferred shares outstanding at period
  end......................................            --            --            --     2,500,000            --
</TABLE>
 
                                       11
<PAGE>
<TABLE>
<CAPTION>
                                                                        YEAR ENDED DECEMBER 31,
                                                       ----------------------------------------------------------
<S>                                                    <C>         <C>         <C>         <C>         <C>
                                                          1998        1997        1996        1995        1994
                                                       ----------  ----------  ----------  ----------  ----------
 
<CAPTION>
                                                             (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                    <C>         <C>         <C>         <C>         <C>
BALANCE SHEET DATA:
Investment securities................................  $   45,401  $   51,749  $   29,107  $   37,866  $   28,568
SBA guaranteed loans.................................     158,510     197,998     136,011      84,263      38,239
 
Total loans..........................................     442,173     476,631     362,914     260,465     195,518
Allowance for credit losses..........................      (2,977)     (2,958)     (2,976)     (2,551)     (2,418)
                                                       ----------  ----------  ----------  ----------  ----------
Total loans, net.....................................     439,196     473,673     359,938     257,914     193,100
 
Nonaccrual loans.....................................       1,144       3,063       2,796       5,666       5,055
Loans over 90 days delinquent and accruing...........          27         155         324       1,237         120
Restructured loans...................................         209         550          --         290         295
                                                       ----------  ----------  ----------  ----------  ----------
Total nonperforming loans............................       1,380       3,768       3,120       7,193       5,470
SBA guaranteed portion...............................          --      (1,291)       (896)     (4,110)     (1,192)
                                                       ----------  ----------  ----------  ----------  ----------
Nonperforming loans net of SBA guarantee.............       1,380       2,477       2,224       3,083       4,278
 
Nonperforming assets (2).............................       2,418       4,632       4,011       8,003       5,927
SBA guaranteed portion...............................          --      (1,291)       (896)     (4,110)     (1,192)
                                                       ----------  ----------  ----------  ----------  ----------
Nonperforming assets net of SBA guarantee............       2,418       3,341       3,115       3,893       4,735
 
Total assets.........................................     638,167     679,556     480,066     387,037     282,787
 
Total deposits.......................................     571,942     624,382     440,433     352,745     252,156
Other borrowed money.................................         270         306         336         363       4,385
Total liabilities....................................     577,134     632,642     444,593     355,419     258,899
 
Redeemable preferred stock...........................          --          --          --       5,250          --
Common stock.........................................      27,732      24,474      20,438      14,847      14,772
Total shareholders equity............................  $   61,033  $   46,914  $   35,473  $   31,618  $   23,888
</TABLE>
 
                                       12
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                        YEAR ENDED DECEMBER 31,
                                                                         -----------------------------------------------------
<S>                                                                      <C>        <C>        <C>        <C>        <C>
                                                                           1998       1997       1996       1995       1994
                                                                         ---------  ---------  ---------  ---------  ---------
SELECTED FINANCIAL RATIOS:
Return on average total assets (3).....................................       1.92%      1.46%      1.06%      0.82%      0.53%
Return on average total equity.........................................      24.90%     20.99%     13.51%     10.57%      5.39%
Net interest margin (4)(5).............................................       5.67%      5.75%      6.05%      6.39%      6.82%
Efficiency ratio (6)...................................................      59.50%     64.13%     70.73%     76.71%     83.45%
Average total loans to average total deposits..........................      78.39%     82.00%     78.47%     72.06%     74.44%
Average shareholders equity to average assets..........................       7.71%      6.94%      7.86%      7.79%      9.84%
Average earning assets to average interest bearing liabilities.........       1.25       1.20       1.20       1.20       1.26
 
ASSET QUALITY RATIOS:
Net charge offs to average loans.......................................       0.01%      0.12%      0.15%      0.61%      0.76%
Nonperforming loans to average total loans.............................       0.28%      0.86%      1.04%      3.26%      3.51%
Nonperforming loans net of SBA guarantee to average total loans........       0.28%      0.57%      0.74%      1.40%      2.74%
Nonperforming assets to ending total assets............................       0.38%      0.68%      0.84%      2.07%      2.10%
Nonperforming assets net of SBA guarantee to ending total assets.......       0.38%      0.49%      0.65%      1.01%      1.67%
 
ALLOWANCE FOR CREDIT LOSSES AS A PERCENTAGE OF:
Period ending total loans..............................................       0.67%      0.62%      0.82%      0.98%      1.24%
Period ending unguaranteed loans.......................................       1.05%      1.06%      1.31%      1.45%      1.54%
 
REGULATORY CAPITAL RATIOS (4):
Leverage ratio (7).....................................................       9.19%      6.70%      6.63%      7.13%      7.04%
Total risk-based capital ratio (8).....................................      14.80%     12.37%     11.17%     12.68%     11.50%
</TABLE>
 
- ------------
 
(1) All share and per share data is restated on an equivalent share basis for
    the pooling of interests combination with RVNB in May 1998, the 5 for 2
    stock split in May 1997, and the 2 for 1 stock split in December 1997.
 
(2) Nonperforming assets include all nonperforming loans and real estate
    acquired in foreclosure.
 
(3) Average balance sheet data has been derived from average daily balances.
 
(4) Not derived from the Bank's audited financial statements.
 
(5) Net interest income divided by average interest earning assets.
 
(6) Efficiency ratio is defined as the ratio of noninterest expenses, less costs
    related to other real estate owned, to the sum of net interest income and
    noninterest income.
 
(7) Leverage Ratio is defined as Tier 1 regulatory capital to average regulatory
    assets.
 
(8) Risk-based Capital Ratio is defined as total qualifying regulatory capital
    to regulatory risk-weighted assets.
 
                                       13
<PAGE>
                      THE BANK OF COMMERCE ANNUAL MEETING
 
GENERAL
 
    This Proxy Statement is furnished in connection with the solicitation of
proxies by the Board of Directors for use at the Annual Meeting of Shareholders
(the "ANNUAL MEETING") of Bank of Commerce, to be held at the Hyatt Regency San
Diego, 1 Market Place, San Diego, California 92101 at 6:00 p.m. local time on
Tuesday, June 15, 1999 and at any adjournment or adjournments thereof. This
Proxy Statement is expected to be mailed to shareholders on or about May 5,
1999.
 
MATTERS TO BE CONSIDERED
 
    1.  To consider and vote upon a proposal to approve the principal terms of
       the Agreement and Plan of Reorganization dated as of February 18, 1999,
       as amended and restated as of March 26, 1999 (as so amended and restated,
       the "AGREEMENT") between BOC and USB. A copy of the Agreement is attached
       as Appendix A to this Proxy Statement/Prospectus. The Agreement provides
       for the merger of BOC with and into a subsidiary of USB on the terms and
       subject to the conditions of the Agreement.
 
    2.  To elect nine persons as directors of BOC to serve until their
       successors are duly elected and qualified.
 
    3.  To approve an amendment to BOC's 1998 Stock Plan to permit Stock Awards
       to be assumed by another party to a merger in which BOC disappears.
 
    4.  To authorize an increase in the aggregate shares available under the
       1998 Stock Plan in the event the Merger is not completed.
 
    5.  To transact such other business as may properly come before the Annual
       Meeting and any adjournment or adjournments thereof.
 
PROXIES
 
    Any proxy in the form enclosed for BOC shareholders which is properly
completed and returned in time for voting with a choice specified thereon will
be voted in accordance with such specification. If no specification is made, the
proxy will be voted FOR the approval of the Agreement and the transactions
contemplated thereby, FOR the nine nominees for the BOC Board of Directors
submitted by the BOC Board of Directors, and FOR the amendments to the BOC 1998
Stock Plan. BOC shareholders may revoke a proxy at any time by (i) attending the
Annual Meeting and voting in person, (ii) executing and delivering a proxy for
the Annual Meeting bearing a later date, or (iii) sending written notice of
revocation to the Secretary of BOC prior to the Annual Meeting.
 
SOLICITATION OF PROXIES
 
    The accompanying proxy is being solicited by the BOC Board of Directors. BOC
will bear the entire cost of solicitation of proxies from its shareholders. In
addition to the solicitation of proxies by mail, certain officers, directors and
employees of BOC, without extra remuneration, may also solicit proxies in
person, by telephone, telegram or otherwise. Arrangements will also be made with
brokerage firms and other custodians, nominees and fiduciaries for the
forwarding of solicitation materials to the beneficial owners of BOC Common
Stock held of record by such persons. BOC may reimburse such brokerage firms,
custodians, nominees and fiduciaries for their reasonable out-of-pocket expenses
incurred in connection with such forwarding. Printing costs for the Proxy
Statement/Prospectus shall be paid equally by USB and BOC. BOC has retained
MacKenzie Partners, Inc. to assist in the solicitation of proxies at a cost of
approximately $7,500, plus customary expenses. These proxy solicitation costs
will
 
                                       14
<PAGE>
be borne by BOC. BOC and USB will each bear all other costs that they incur,
respectively, including legal and accounting fees.
 
RECORD DATE AND VOTING RIGHTS
 
    The close of business on April 30, 1999 (the "BOC RECORD DATE") was the
record date for determining BOC shareholders entitled to receive notice of and
to vote at the Annual Meeting. On the BOC Record Date, there were
            shares of the common stock, no par value per share, of BOC (the "BOC
COMMON STOCK") outstanding held by             holders of record.
 
    Each holder of BOC Common Stock is entitled to one vote for each share of
BOC Common Stock in that holder's name on the books of BOC as of the BOC Record
Date on any matter submitted to the vote of the shareholders, except that, in
the election of directors, the shares may be voted cumulatively. Cumulative
voting enables a shareholder to give one nominee for director a number of votes
equal to the number of directors to be elected multiplied by the number of
shares being voted by such shareholder or to distribute his or her votes on the
same principle among two or more nominees as he or she sees fit. If shares are
voted cumulatively, the nine nominees receiving the highest number of votes will
be elected. The proxyholders are given, under the terms of proxy, discretionary
authority to cumulate votes represented by shares for which they are named
proxy.
 
    The approval of the Agreement will require the affirmative vote, in person
or by proxy, of two-thirds of the outstanding shares of BOC Common Stock.
Approval of a majority of the shares present and voting at the Annual Meeting is
required for the election of the director nominees set forth in Bank of Commerce
Proposal 2, provided that if shares are voted cumulatively, the nine nominees
receiving the highest number of votes shall be elected. Approval of a majority
of the shares present and voting at the Annual Meeting is required for the
approval of each of the amendments to the BOC 1998 Stock Plan contemplated by
Proposal 3 and 4.
 
    Shares of BOC Common Stock that are not represented in person or by proxy at
the Annual Meeting, whether such shares are held of record by the beneficial
owners or by brokers or other "street name" or nominee holders (collectively,
"BOC RECORD HOLDERS"), shall not be counted in determining whether a quorum is
present and shall not be deemed present at the Annual Meeting. Proxies submitted
by any BOC Record Holder that are unmarked as to any matter shall be voted
according to the recommendation of the Board of Directors of BOC. A proxy
withholding authority to vote for a director nominee if shares are not voted
cumulatively, will be counted as a vote not in favor of the director nominee. A
vote of abstention as to any proposal as to which abstention is permitted will
be counted as a vote not in favor of a proposal.
 
RECOMMENDATION OF THE BOC BOARD OF DIRECTORS
 
    At the meeting of the Board of Directors of BOC held on February 17, 1999
the Board of Directors of BOC approved the proposals to be voted upon by BOC
shareholders and recommended the approval thereof by the shareholders.
 
    It is currently expected that all of the 3,230,573 shares of BOC Common
Stock which the directors and executive officers of BOC beneficially owned and
were entitled to vote as of March 31, 1999. (20.77% of the total number of
outstanding shares of BOC Common Stock as of such date) will be voted for the
approval of the Agreement. In particular, in connection with the execution of
the Agreement, each of the directors and executive officers of BOC in his or her
capacity as a BOC shareholder, agreed to deliver agreements (together the
"AFFILIATE AGREEMENTS") to USB. In the Affiliate Agreements, each of the
directors and executive officers of BOC stated his or her respective intention,
if the BOC Board of Directors recommends to BOC shareholders that they vote
"for" the merger, to vote or cause to be voted in favor of the Merger all shares
of BOC Common Stock owned or controlled by him or her.
 
                                       15
<PAGE>
                            THE MERGER (PROPOSAL 1)
 
    THE FOLLOWING SUMMARY OF THE MATERIAL TERMS AND PROVISIONS OF THE AGREEMENT
BETWEEN BOC AND USB IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE AGREEMENT.
THE AGREEMENT IS ATTACHED AS APPENDIX A TO THIS PROXY STATEMENT/PROSPECTUS AND
IS INCORPORATED HEREIN BY REFERENCE.
 
    THIS SECTION OF THE PROXY STATEMENT/PROSPECTUS DESCRIBES THE MATERIAL
ASPECTS OF THE MERGER, INCLUDING THE PRINCIPAL PROVISIONS OF THE AGREEMENT.
 
GENERAL
 
    USB and BOC entered into the Agreement, which provides for the merger (the
"MERGER") of BOC with and into U.S. Bank National Association ("US BANK"), a
subsidiary of USB. US Bank will be the surviving corporation in the merger (the
"SURVIVING CORPORATION"). With certain limited exceptions for shares of treasury
stock of BOC ("TREASURY STOCK") and shares for which dissenters rights have been
properly exercised and not withdrawn or terminated ("DISSENTING SHARES"), each
share of BOC Common Stock issued and outstanding at the Effective Time of the
Merger (see "--Effective Time" below) will be converted into the right to
receive 0.60 shares of the common stock, par value $1.25 per share, of USB (the
"USB COMMON STOCK"), subject to adjustment as provided in the next paragraph.
 
    The exchange ratio for converting shares of BOC Common Stock in the Merger
is initially set at 0.60 shares of USB Common Stock for each share of BOC Common
Stock. The exchange ratio may be adjusted depending upon the average closing
stock price of USB Common Stock for the 20 trading days ending three days before
we close the Merger. If that average USB stock price is more than $40, the
shareholders of BOC immediately prior to the Effective Time ("BOC SHAREHOLDERS")
will receive for each share of BOC Common Stock a number of shares of USB Common
Stock equal to 24 divided by that average price. If that average USB stock price
is less than $30, BOC Shareholders will receive for each share of BOC Common
Stock a number of shares of USB Common Stock equal to 18 divided by that average
price. The effect of the adjustment is to provide that BOC Shareholders receive
no more than $24 of USB Common Stock and no less than $18 of USB Common Stock
for each of their BOC shares as calculated by the 20 day average closing price
described above.
 
THE MERGER
 
    Subject to the terms and conditions of the Agreement, at the Effective Time,
BOC will merge with and into US Bank. US Bank will be the Surviving Corporation
and will continue its existence as a national banking association under the
Federal laws of the United States.
 
    At the Effective Time, the separate existence of BOC will terminate and
holders of BOC Common Stock will cease to be, and will have no rights as
shareholders of BOC, other than to receive any dividend or other distribution
with respect to BOC Common Stock with a record date occurring prior to the
Effective Date and the right to receive USB Common Stock or cash. After the
Effective Time, there will be no transfers on the stock transfer books of BOC or
the Surviving Corporation of shares of BOC Common Stock.
 
CONVERSION OF STOCK; TREATMENT OF OPTIONS
 
    At the Effective Time, each share of BOC Common Stock, excluding Treasury
Stock, issued and outstanding immediately prior to the Effective Time will be
converted, into a number of shares of USB's Common Stock, such number to be
determined by reference to the ratio provided below (the
 
                                       16
<PAGE>
"EXCHANGE RATIO"), and cash in lieu of fractional shares. If the Average Stock
Price (as defined below) is:
 
    (i) greater than $40.00, the Exchange Ratio will be equal to the quotient
        obtained by dividing 24.00 by the Average Stock Price;
 
    (ii) equal to or greater than $30.00 but less than or equal to $40.00, the
         Exchange Ratio will be fixed at 0.60; or
 
   (iii) less than $30.00, the Exchange Ratio will be equal to the quotient
         obtained by dividing 18.00 by the Average Stock Price.
 
    "AVERAGE STOCK PRICE" means the average closing prices per share of USB
Common Stock (as reported in USB's Stock Exchange Composite Transaction Tape)
for the twenty consecutive trading days ending on (and including) the third
trading day prior to the Effective Date.
 
    At the Effective Time, each outstanding option to purchase shares of BOC
Common Stock under the BOC 1989 Stock Option Plan and BOC 1998 Stock Plan and
each BOC "D" Common Stock Purchase Warrant (each, a "BOC STOCK OPTION"), whether
vested or unvested, will be converted into an option or warrant, as appropriate,
to acquire, on the same terms and conditions as were applicable under such BOC
Stock Option, the number of shares of USB Common Stock equal to (a) the number
of shares of BOC Common Stock subject to the BOC Stock Option, multiplied by (b)
the Exchange Ratio (such product rounded down to the nearest whole number) (each
new option or warrant is hereinafter referred to as "REPLACEMENT OPTION"), at an
exercise price per share (rounded up to the nearest whole cent) equal to (y) the
aggregate exercise price for the shares of BOC Common Stock which were
purchasable pursuant to such BOC Stock Option divided by (z) the number of full
shares of USB Common Stock subject to such Replacement Option in accordance with
the foregoing. Notwithstanding the foregoing, each BOC Stock Option which is
intended to be an "incentive stock option" (as defined in Section 422 of the
Internal Revenue Code of 1986, as amended (the "CODE") will be adjusted in
accordance with the requirements of Section 424 of the Code.
 
    If, prior to the Effective Time, the outstanding shares of BOC Common Stock
or USB Common Stock are 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 changes in capitalization, an appropriate
and proportionate adjustment will be made to the Exchange Ratio.
 
BACKGROUND OF THE MERGER
 
    From time to time, the BOC Board of Directors had considered and analyzed
BOC's strategic alternatives, including prospects for BOC continuing as an
independent entity and possible business combination transactions with other
financial institutions of various sizes and the potential effects of such
transactions on BOC and its shareholders, employees and customers and the
communities it serves.
 
    In September and October 1998, in view of the competitive environment in the
California banking and financial services industry in general, and the SBA
lending business in particular, and the continuing trend toward consolidation
taking place, the BOC Board of Directors reviewed BOC strategic planning matters
with BOC senior management. The review included consideration of potential
business combination transactions, including possible acquisitions by BOC of
other institutions, prospects for internal growth, and the possibility of a
negotiated sale of BOC. These were evaluated in light of the financial position
of BOC, developments in SBA lending and secondary markets for SBA loans, and the
capital needs and ability to generate returns of BOC that could reasonably be
anticipated in the future.
 
                                       17
<PAGE>
    The BOC Board of Directors determined that acquisition of other institutions
would require significant effort and, due to the lack of suitable targets that
could enhance BOC's franchise, would not be particularly beneficial. Internal
growth, especially in light of developments in the SBA loan market and the
secondary market for SBA loan interests, would not likely continue to result in
consistently increased returns to the BOC shareholders. Only the acquisition of
BOC by another, significantly larger, organization would likely produce enhanced
returns and facilitate the continued expansion of the SBA lending business and
banking franchise of BOC. The BOC Board of Directors therefore determined that
BOC should seek indications of interest from selected companies that management
and the company's financial advisors believed would be most interested in and
financially and otherwise capable of engaging in a business combination
transaction with BOC. In connection with this process, BOC engaged Keefe,
Bruyette & Woods, Inc. ("KBW") to act as its financial advisor.
 
    KBW contacted 23 banking and lending companies regarding their interest in
engaging in such a transaction with BOC. BOC and KBW jointly selected the
original 23 companies based on a number of factors, including a review of bank
holding companies with existing franchises having the most logical complementary
fit with BOC's existing franchise, companies known to be interested in expanding
their SBA lending, operations, an affordability analysis conducted by KBW and
the belief of BOC's management and KBW that certain other banking and lending
companies might be interested in a potential business combination transaction
with BOC based on their strategic objectives. Eleven of the companies requested
information about BOC. Each of these eleven companies entered into a
confidentiality agreement with BOC and received from KBW a package containing
financial information on BOC. Each of these companies was requested to deliver
to KBW on or before December 9, 1998 a written proposal containing the per share
price and other proposed terms upon which such party would be willing to enter
into a business combination transaction with BOC.
 
    On December 9, 1998, two of these companies submitted written proposals to
engage in a business combination transaction. One proposal contemplated an
acquisition of BOC in a stock-for-stock merger to be accounted for as a pooling
of interests. The proposal contemplated a fixed price of $18.00 per share
payable in stock of the other party (which would be exchanged for shares of BOC
Common Stock). USB made a proposal that contemplated the acquisition of BOC at a
price of $17.10 per share of BOC Common Stock. USB's letter indicated that the
transaction could be structured as a cash or stock transaction. Both indications
were subject to negotiation of a definitive agreement, completion of due
diligence and other conditions. Over the next several days, KBW discussed with
representatives of each company the nature of its proposal and the general
timing of due diligence and any proposed transaction. During the course of such
discussions, USB indicated that if its due diligence examination of BOC
proceeded favorably, it would be willing to increase the proposed consideration
it would pay in a transaction.
 
    On December 16, 1998, KBW, Higgs, Fletcher &Mack, LLP, legal counsel to BOC
("HFM"), and the BOC Board of Directors met to review the status of the
discussions with the two companies. KBW also reviewed for the BOC Board of
Directors the process by which the indications of interest were solicited. The
BOC Board of Directors considered the pricing structures of each proposal, the
financial strength of each company that submitted a proposal, the ability of
each such company to complete a transaction, and the marketability of the stock
that would be received by the holders of BOC Common Stock. The BOC Board of
Directors also discussed the likely impact of the proposed transactions on the
operations of BOC's offices and branches, and its employees and customers.
 
    Based on the BOC Board of Directors' consideration of such factors, as well
as the relative attractiveness of USB and the other party, from a financial,
business and franchise perspective, the relative liquidity of the USB Common
Stock and the common stock of the other party and the BOC Board of Directors'
perception that USB Common Stock would have a greater potential for appreciation
than that of the other bidder, the BOC Board of Directors determined that USB
should be permitted to conduct a due diligence review of BOC and the BOC Board
of Directors authorized
 
                                       18
<PAGE>
management and BOC's financial advisors to enter into discussions with USB with
a view toward increasing the consideration to be paid to BOC's shareholders.
 
    Based on further discussions between KBW and USB, USB raised its bid to
$17.85 per share before conducting "due diligence." From January 6, 1999 through
January 8, 1999, representatives of USB conducted a "due diligence" review of
the books and records of BOC. They also interviewed members of senior management
and reviewed certain of BOC's employment arrangements with Mr. Davis and Mr.
Bartram with HFM.
 
    On January 20, 1999, USB presented BOC with its "final indication of
interest," which contemplated a fixed exchange ratio of .6 share of USB Common
Stock for each share of BOC Common Stock in a transaction that would be treated
as a purchase for accounting purposes and as a tax free reorganization for tax
purposes. At that exchange ratio, the indicated price per share of BOC Common
Stock, based on the closing price of USB Common Stock on that date, was $19.50.
The USB proposal was also conditioned upon Mr. Bartram and six other key
employees entering into employment and noncompetition agreements.
 
    Following the receipt of the revised USB proposal, senior management of BOC
and USB and their respective legal and financial advisors held discussions
concerning the terms of a definitive agreement. On February 13, 1999, the BOC
Board of Directors held a meeting to discuss and review, with the assistance of
its legal and financial advisors, the draft Agreement and related matters. These
included the employment agreements to be entered into between USB and each of
Messrs. Davis and Bartram, USB having dropped its condition that the other six
employees enter into employment and noncompetition agreements. Representatives
of KBW reviewed financial information concerning USB, BOC and the proposed
transaction. Following the February 13 meeting of the BOC Board of Directors,
discussions continued among the parties and their respective legal and financial
advisors regarding the terms of such agreements. On February 17, 1999, the terms
of the Agreement to be presented to the BOC Board of Directors were finalized.
 
    At a meeting held on February 17, 1999, BOC's legal and financial advisors
reviewed with the BOC Board of Directors the Agreement and the employment and
other agreements to be entered into between Messrs. Davis and Bartram and USB.
See "THE MERGER (PROPOSAL 1)--Interests of Certain Persons in the Merger."
Representatives of KBW reviewed updated financial information concerning USB,
BOC and the proposed transaction, and delivered to the BOC Board of Directors
KBW's oral opinion that, as of such date, the Exchange Ratio was fair, from a
financial point of view, to the holders of BOC Common Stock. See "THE MERGER
(PROPOSAL 1)--Opinion of BOC's Financial Advisor." Based upon the BOC Board of
Directors' review and discussion of the definitive terms of the transaction, the
opinion of KBW and other relevant factors, the BOC Board of Directors, by
unanimous vote of all directors, authorized and approved the execution of the
Agreement. Following such meeting, the Agreement was executed by the parties.
 
RECOMMENDATION OF THE BOC BOARD OF DIRECTORS AND BOC'S REASONS FOR THE MERGER
 
    In reaching its decision to approve the Agreement, the BOC Board of
Directors consulted with BOC's management and its legal and financial advisors,
and considered the following material factors:
 
    (i) The BOC Board of Directors' familiarity with and review of BOC's
        business, operations, earnings, prospects and financial conditions;
 
    (ii) The BOC Board of Directors' review, based primarily on the analysis of
         KBW, of the business, operations, earnings and financial condition of
         USB on both a historical and a prospective basis, the enhanced
         opportunities for operating efficiencies (revenue enhancement) that
         could result from the Merger, the enhanced opportunities for growth
         that the Merger would make possible and the respective contributions
         the parties would bring to a combined institution;
 
                                       19
<PAGE>
   (iii) The terms of the Agreement and the transactions contemplated thereby,
         including the Exchange Ratio, noting that it reflected a 14% premium
         for BOC shareholders based on the closing price of USB Common Stock and
         BOC Common Stock on February 17, 1999. With respect to the Termination
         Fee, the BOC Board of Directors was aware that the existence of such a
         fee might discourage third parties from seeking to acquire BOC. See
         "THE MERGER (PROPOSAL 1)--Termination of the Agreement;"
 
    (iv) The presentations of KBW to the BOC Board of Directors, the financial
         information reviewed by KBW at the meetings of the BOC Board of
         Directors on February 13 and February 17, 1999, and the opinion of KBW,
         rendered on February 17, 1999 that, as of such date and based upon and
         subject to the procedures followed, assumptions made, matters
         considered, and limitations on the analyses undertaken, the Exchange
         Ratio was fair, from a financial point of view, to the holders of BOC
         Common Stock. For a discussion of the opinion of KBW, see "THE MERGER
         (PROPOSAL 1)--Opinion of BOC's Financial Advisor;"
 
    (v) The opportunities for revenue enhancement and cost savings presented by
        the transaction. The SBA lending operations of BOC could be
        significantly better supported and the expansion of those operations
        financed with the more substantial resources of USB. SBA lending in
        markets already served by USB presents the potential for additional
        enhancement of the services provided to USB's existing customers as well
        as opportunities for providing additional services to BOC customers in
        those areas. In addition, USB could, as a result of its size and
        geographic and product diversity, offer an extensive array of commercial
        and consumer products through BOC's branch network not currently
        available from BOC;
 
    (vi) The BOC Board of Directors considered that BOC would be combined with
         USB, with a total of $73.9 billion in combined assets. The BOC Board of
         Directors also considered that the combined organization would have
         operations in a number of states not currently served by BOC, thus
         greatly increasing BOC's geographic diversity. The BOC Board of
         Directors recognized that such an institution would be likely to
         possess the financial resources to compete more effectively in the
         rapidly changing marketplace for banking and financial services and
         would be effective in fulfilling BOC's long-term objective of
         increasing its overall size and enhancing its market presence, while
         maintaining its asset quality and credit standards. The BOC Board of
         Directors also considered the substantial technological capabilities of
         USB and its ability to provide improved products and services to BOC's
         customers, and the likelihood that such capabilities and ability would
         enhance the ability of the combined company to compete in the future
         with other banks and non-banking providers of financial services.
 
   (vii) For a period of at least two years, the continuing role in the combined
         entity Mr. Bartram would be expected to play, and that for a more
         limited period, Mr. Davis would assist in the transition. The BOC Board
         of Directors also considered that Messrs. Bartram and Davis would
         execute employment and other agreements with USB at the time the
         Agreement was entered into, and that certain directors and officers of
         BOC might be deemed to have interests in the Merger other than their
         interests generally as BOC shareholders. See "THE MERGER (PROPOSAL
         1)--Interests of Certain Persons in the Merger."
 
  (viii) The general impact the Merger would have on the various constituencies
         served by BOC, including its customers, employees and others. The BOC
         Board of Directors noted that the combined entity would be able to
         offer a more extensive range of products and banking services.
 
    (ix) The expectation that the Merger would be tax free (other than with
         respect to cash paid in lieu of fractional shares) to BOC Shareholders
         for federal income tax purposes. See "THE MERGER (PROPOSAL 1)--Material
         Federal Income Tax Consequences."
 
                                       20
<PAGE>
    (x) The nature of, and likelihood of obtaining, the regulatory approvals
        that would be required with respect to the Merger. See "THE MERGER
        (PROPOSAL 1)--Regulatory Approvals Required for the Merger."
 
    (xi) The current and prospective economic and competitive environment facing
         the financial services industry generally and each institution in
         particular.
 
   (xii) The BOC Board of Directors' review of alternatives to the Merger for
         enhancing shareholder value, and the BOC Board of Directors' belief,
         based upon such review, that such alternatives were not likely to
         result in greater value for BOC's shareholders than the value to be
         realized in the Merger. In this regard, the BOC Board of Directors
         considered, among other things, variables relating to BOC's ability to
         continue to generate revenue growth, improved profitability and
         superior shareholder returns on a stand-alone basis, and the
         availability of attractive acquisition opportunities for BOC;
 
  (xiii) The process conducted by BOC's management and its financial advisor in
         exploring and determining the potential value which could be realized
         by BOC's shareholders in a business combination transaction, including
         the contacts between BOC and/or its financial advisor and certain other
         companies determined to be the most likely companies to be both
         interested in and financially and otherwise capable of engaging in a
         business combination transaction with BOC, the fact that each of such
         selected companies which expressed an interest in a business
         combination transaction with BOC was afforded an opportunity to submit
         proposals for such a transaction to BOC, the terms of the proposals
         received and the fact that the indicated value of the Exchange Ratio in
         the USB proposal was higher as of February 17, 1999, than the indicated
         value of the per share consideration offered in the other proposal
         received.
 
    The foregoing discussion of the information and factors considered by the
BOC Board of Directors is not intended to be exhaustive, but sets forth the
material factors considered by the BOC Board of Directors. In reaching its
determination to approve and recommend the Merger, the BOC Board of Directors
did not assign relative or specific weights to the foregoing factors and
individual directors may have weighed such factors differently.
 
    FOR THE REASONS SET FORTH ABOVE, THE BOC BOARD OF DIRECTORS HAS UNANIMOUSLY
APPROVED THE MERGER AS FAIR TO AND IN THE BEST INTERESTS OF BOC AND THE BOC
SHAREHOLDERS AND UNANIMOUSLY RECOMMENDS THAT BOC SHAREHOLDERS VOTE FOR THE
APPROVAL OF THE MERGER.
 
OPINION OF BOC'S FINANCIAL ADVISOR
 
    BOC engaged KBW to act as its exclusive financial advisor in connection with
the Merger. KBW agreed to assist BOC in analyzing, structuring, negotiating and
effecting a transaction with a potential acquirer, which after discussions with
multiple parties was USB. BOC selected KBW because KBW is a nationally
recognized investment-banking firm with substantial experience in transactions
similar to the Merger and is familiar with BOC and its business. As part of its
investment banking business, KBW is continually engaged in the valuation of
businesses and their securities in connection with mergers and acquisitions.
 
    As part of its engagement, representatives of KBW attended the meeting of
the BOC Board of Directors held on February 17, 1999 at which the BOC Board
considered and approved the Agreement. At the February 17, 1999 meeting, KBW
rendered an oral opinion that, as of that date, the exchange ratio was fair to
BOC and its shareholders from a financial point of view. That opinion was
reconfirmed in writing as of the date of this Proxy Statement/Prospectus.
 
    The full text of KBW's written opinion dated the date of this Proxy
Statement/Prospectus is attached as Appendix B to this Proxy
Statement/Prospectus and is incorporated herein by reference.
 
                                       21
<PAGE>
BOC shareholders are urged to read the opinion in its entirety for a description
of the procedures followed, assumptions made, matters considered, and
qualifications and limitations on the review undertaken by KBW.
 
    KBW's opinion is directed to the BOC Board of Directors and addresses only
the exchange ratio. It does not address the underlying business decision to
proceed with the Merger and does not constitute a recommendation to any BOC
shareholder as to how the shareholder should vote at the Annual Meeting with
respect to the Merger or any matter related thereto.
 
    In rendering its opinion, KBW:
 
    - reviewed, among other things,
 
        - the Agreement,
 
        - Annual Reports to shareholders and Annual Reports on Form 10-K of USB,
 
        - Annual Reports on Form 10-K of BOC,
 
        - Certain interim reports to shareholders and Quarterly Reports on Form
          10-Q of USB,
 
        - Quarterly Reports on Form 10-Q of BOC, and
 
        - Certain internal financial analyses and forecasts for BOC prepared by
          management.
 
    - held discussions with members of senior management of BOC regarding
 
        - past and current business operations,
 
        - regulatory relationships,
 
        - financial condition, and
 
        - future prospects of the respective companies.
 
    - compared certain financial and stock market information for USB and BOC
      with similar information for certain other companies with publicly traded
      securities,
 
    - reviewed the financial terms of certain recent business combinations in
      the banking industry; and
 
    - performed other studies and analyses that it considered appropriate.
 
    In conducting its review and arriving at its opinion, KBW relied upon and
assumed the accuracy and completeness of all of the financial and other
information provided to it or publicly available. KBW did not attempt to verify
such information independently. KBW relied upon the management of BOC as to the
reasonableness and achievability of the financial and operating forecasts and
projections (and assumptions and bases therefor) provided to KBW. KBW assumed
that those forecasts and projections reflected the best available estimates and
judgments of BOC management. KBW also assumed, without independent verification,
that the aggregate allowances for loan losses for USB and BOC are adequate to
cover those losses. KBW did not make or obtain any evaluations or appraisals of
the property of USB or BOC, and KBW did not examine any individual credit files.
 
    The projections furnished to KBW and used by it in certain of its analyses
were prepared by the senior management of BOC. BOC does not publicly disclose
internal management projections of the type provided to KBW in connection with
its review of the Merger. As a result, such projections were not prepared with a
view towards public disclosure. The projections were based on numerous variables
and assumptions which are inherently uncertain, including factors related to
general economic and competitive conditions. ACCORDINGLY, ACTUAL RESULTS COULD
VARY SIGNIFICANTLY FROM THOSE SET FORTH IN THE PROJECTIONS.
 
                                       22
<PAGE>
    The following is a summary of the material analyses presented by KBW to the
BOC Board on February 17, 1999:
 
    TRANSACTION SUMMARY
 
    KBW calculated the merger consideration to be paid pursuant to the exchange
ratio as a multiple of BOC's book value, and 1998 actual and 1999 estimated
earnings. This computation was based on BOC's earnings per share of $0.85 in
1998 and BOC's estimated earnings per share of $1.26 in 1999, and an exchange
ratio of 0.60 USB share for each BOC share. Based on those assumptions, this
analysis indicated that BOC shareholders would receive shares of USB Common
Stock worth $19.76 for each share of BOC Common Stock held, and that this amount
would represent a multiple of 5.02 times book value per share, and 15.6 times
estimated 1999 earnings per share.
 
    DISCOUNTED CASH FLOW ANALYSIS
 
    KBW estimated the present value of future cash flows that would accrue to a
holder of a share of BOC Common Stock assuming that the shareholder held the
stock for five years and then sold it. The analysis was based on earnings
forecasts prepared by management on a stand-alone, independent basis for the
years 1999 through 2000 and annual net income growth rates from 16.0% to 22.0%
for the years 2001 through 2003. A 13.0% dividend payout ratio was assumed for
BOC through the year 2003. An estimated year end stock price was estimated for
each year by multiplying the projected annual earnings by a price to trailing
twelve months earnings multiple of 13.8 times. The estimated stock price for
each year and the estimated dividends were discounted at rates from 16.0% to
22.0%. These rates were selected because, in KBW's experience, they represent
the risk-adjusted rates of return that investors in securities such as the
common stock of BOC would require. On the basis of these assumptions, KBW
calculated a range of present values ranging from $14.01 to $20.89. These values
were compared to the $19.76 offer from USB.
 
    KBW stated that the discounted cash flow present value analysis is a widely
used valuation methodology but noted that it relies on numerous assumptions,
including asset and earnings growth rates, terminal values and discount rates.
The analysis did not purport to be indicative of the actual values or expected
values of BOC Common Stock.
 
    SELECTED TRANSACTION ANALYSIS
 
    KBW reviewed certain financial data related to a set of comparable
nationwide bank transactions with announced values between $150 million and $500
million since December 31, 1997.
 
    KBW compared multiples of price to various factors for the USB-BOC Merger to
the same multiples for the comparable group's mergers at the times those mergers
were announced. The results were as follows:
 
<TABLE>
<CAPTION>
                                                                 MULTIPLE OF PRICE TO FACTOR
                                                             ------------------------------------
<S>                                                          <C>              <C>
                                                               COMPARABLE
                     FACTOR CONSIDERED                        GROUP AVERAGE     USB-BOC MERGER
- -----------------------------------------------------------  ---------------  -------------------
Future 12 Months Earnings                                           21.7x              15.6x
Trailing 12 Months Earnings                                         25.4x              23.3x
Stated Book Value                                                   3.00x              5.02x
Estimated Tangible Book Value                                       3.32x              5.02x
Tangible Book Premium To Core Deposits Value                        27.7x              44.0x
</TABLE>
 
                                       23
<PAGE>
    KBW repeated this analysis using current acquirer stock prices. The results
were as follows:
 
<TABLE>
<CAPTION>
                                                                 MULTIPLE OF PRICE TO FACTOR
                                                             ------------------------------------
<S>                                                          <C>              <C>
                                                               COMPARABLE
                     FACTOR CONSIDERED                        GROUP AVERAGE     USB-BOC MERGER
- -----------------------------------------------------------  ---------------  -------------------
Future 12 Months Earnings                                           17.3x              15.6x
Trailing 12 Months Earnings                                         20.3x              23.3x
Stated Book Value                                                   2.56x              5.02x
Estimated Tangible Book Value                                       2.85x              5.02x
Tangible Book Premium To Core Deposits Value                        23.9x              44.0x
</TABLE>
 
    No company or transaction used as a comparison in the above analysis is
identical to USB, BOC or the Merger. Accordingly, an analysis of these results
is not mathematical. Rather, it involves complex considerations and judgments
concerning differences in financial and operating characteristics of the
companies and other factors that could affect the public trading value of the
companies to which they are being compared.
 
    SELECTED PEER GROUP ANALYSIS
 
    KBW compared the financial performance and market performance of USB to
those of a group of comparable holding companies. The comparisons were based on:
 
    - various financial measures
 
        - earnings performance,
 
        - operating efficiency,
 
        - capital adequacy and
 
        - asset quality and
 
    - various measures of market performance,
 
        - including market/book values,
 
        - price to earnings and
 
        - dividend yields.
 
    To perform this analysis, KBW used the financial information as of and for
the quarter ended December 31, 1998 and market price information as of February
17, 1999. The companies in the peer group were US regional banks that had total
market capitalization ranging from $17.5 billion to $59.5 billion.
 
    KBW's analysis showed the following concerning USB's financial performance:
 
<TABLE>
<CAPTION>
                        PERFORMANCE MEASURE                              USB      PEER GROUP
- --------------------------------------------------------------------  ---------  -------------
<S>                                                                   <C>        <C>
Return on Equity, annualized                                              25.73%       16.57%
Return on Assets, annualized                                               2.05%        1.45%
Net Interest Margin, annualized                                            4.82%        4.32%
Efficiency Ratio, annualized                                              49.83%       56.85%
Leverage Ratio                                                             6.80%        7.77%
Non-Performing Assets to Total Loans and Other Real Estate Owned           0.51%        0.49%
Loan Loss Reserve to Average Loans                                         1.69%        1.65%
</TABLE>
 
                                       24
<PAGE>
    KBW's analysis showed the following concerning USB's market performance:
 
<TABLE>
<CAPTION>
                         PERFORMANCE MEASURE                              USB      PEER GROUP
- ---------------------------------------------------------------------  ---------  -------------
<S>                                                                    <C>        <C>
Price to Earnings Multiple, based on 1999 estimated earnings                14.3x        17.3x
Price to Earnings Multiple, based on 2000 estimated earnings                12.6x        15.3x
Price to Book Multiples                                                     3.87x        3.42x
Price to Tangible Book Multiples                                            5.18x        4.54x
Dividend Yield                                                              2.20%        2.36%
</TABLE>
 
    For purposes of the above calculations, all earnings estimates are based
upon the KBW estimates for USB.
 
    CONTRIBUTION ANALYSIS
 
    KBW analyzed the relative contribution of each of USB and BOC to certain pro
forma balance sheet and income statement items of the combined entity. The
contribution analysis showed:
 
<TABLE>
<S>                                                                     <C>
BOC Contribution To:
  Combined Common Equity..............................................       1.10%
  Combined 1999 Estimated Net Income without Cost Savings.............       1.17%
  Combined Total Assets...............................................       0.83%
BOC Estimated Pro Forma Ownership.....................................       1.23%
</TABLE>
 
    KBW compared the relative contribution of the balance sheet and income
statement items with the estimated pro forma ownership for BOC shareholders
based on an exchange ratio of 0.60.
 
    OTHER ANALYSES
 
    KBW reviewed the relative financial and market performance of BOC and USB to
a variety of relevant industry peer groups and indices. KBW also reviewed
earnings estimates, balance sheet composition, historical stock performance and
other financial data for USB.
 
    In connection with its opinion dated as of the date of this Proxy
Statement/Prospectus, KBW performed procedures to update, as necessary, certain
of the analyses described above. KBW reviewed the assumptions on which the
analyses described above were based and the factors considered in connection
therewith. KBW did not perform any analyses in addition to those described above
in updating its February 17, 1999 oral opinion.
 
    KEEFE, BRUYETTE & WOODS, INC.
 
    The BOC Board of Directors has retained KBW as an independent contractor to
act as financial adviser to BOC regarding the Merger. As part of its investment
banking business, KBW is continually engaged in the valuation of banking
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. As specialists in the securities of banking
companies, KBW has experience in, and knowledge of, the valuation of banking
enterprises. In the ordinary course of its business as a broker-dealer, KBW may,
from time to time, purchase securities from, and sell securities to, BOC and
USB. As a market maker in securities KBW may from time to time have a long or
short position in, and buy or sell, debt or equity securities of BOC and USB for
KBW's own account and for the accounts of its customers.
 
    BOC and KBW have entered into an agreement relating to the services to be
provided by KBW in connection with the Merger. BOC has agreed to pay KBW, at the
time of closing, a cash fee equal to 1.0% of the market value of the aggregate
consideration offered in exchange for the outstanding shares
 
                                       25
<PAGE>
of common stock of BOC in the Merger. Pursuant to the KBW engagement agreement,
BOC also agreed to reimburse KBW for reasonable out-of-pocket expenses and
disbursements incurred in connection with its retention and to indemnify against
certain liabilities, including liabilities under the federal securities laws.
 
EXCHANGE OF CERTIFICATES; FRACTIONAL SHARES
 
    At or prior to the Effective Time, USB will deposit, with First Chicago
Trust Company of New York (the "EXCHANGE AGENT"), for the benefit of the holders
of certificates formerly representing shares of BOC Common Stock, for exchange
in the Merger in accordance with the Agreement, certificates representing the
shares of USB Common Stock and the cash in lieu of fractional shares, together
with any dividends or distributions with a record date occurring after the
Effective Date with respect thereto (without any interest on any such cash,
dividends or distributions) (the "EXCHANGE FUND").
 
    Within 10 days after the Effective Date, USB or the Exchange Agent will send
a form letter of transmittal to the BOC Shareholders of record immediately prior
to the Effective Date. The form transmittal letter will contain instructions
with respect to the surrender of certificates representing BOC Common Stock in
exchange for USB Common Stock and cash for fractional shares. No interest will
be paid on any such cash to be paid in lieu of fractional share interests or in
respect of dividends or distributions.
 
    BOC COMMON STOCK CERTIFICATES SHOULD NOT BE RETURNED WITH THE ENCLOSED PROXY
AND SHOULD NOT BE FORWARDED TO THE EXCHANGE AGENT UNLESS AND UNTIL THE BOC
SHAREHOLDER RECEIVES A LETTER OF TRANSMITTAL FOLLOWING THE EFFECTIVE TIME.
 
    Until the certificates representing BOC Common Stock are surrendered for
exchange after the Effective Time, holders of such certificates will accrue but
will not be paid dividends or other distributions declared after the Effective
Time with respect to USB 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 BOC of shares of BOC Common
Stock issued and outstanding immediately prior to the Effective Time. If
certificates representing shares of BOC Common Stock are presented after the
Effective Time for transfer, they will be canceled and exchanged for the
relevant certificate representing the applicable shares of USB Common Stock,
subject to the provisions of the Agreement.
 
    No fractional shares of USB Common Stock will be issued to any BOC
Shareholder upon consummation of the Merger. For each fractional share that
would otherwise be issued, USB will pay an amount in cash (without interest)
determined by multiplying such fraction by the Average Stock Price, as
determined above.
 
    None of USB, BOC, the Exchange Agent or any other person, will be liable to
any former BOC Shareholder for any amount properly delivered to a public
official pursuant to applicable abandoned property, escheat or similar laws.
 
    If a certificate for BOC Common Stock has been lost, stolen or destroyed,
the exchange of certificate may still be consummated if the Exchange Agent
receives appropriate evidence as to such loss and appropriate evidence as to
ownership of the certificate by the claimant. An indemnity reasonably
satisfactory to USB may also be required.
 
    For a description of the USB Common Stock and a description of the
differences between the rights of BOC Shareholders, on the one hand, and the
shareholders of USB shareholders (the "USB SHAREHOLDERS"), on the other, see
"DESCRIPTION OF USB CAPITAL STOCK AND COMPARISON OF SHAREHOLDER RIGHTS."
 
                                       26
<PAGE>
EFFECTIVE TIME
 
    The effective date for the merger (the "EFFECTIVE DATE") will be the date
set forth in the notice filed by USB with the Office of the Comptroller of the
Currency (the "OCC"), specifying the date on which the Merger will occur. The
"EFFECTIVE TIME" of the Merger will be the time set forth in such notice.
 
REPRESENTATIONS AND WARRANTIES
 
    The Agreement contains representations and warranties of USB, on the one
hand, and BOC, on the other hand. BOC has given representations and warranties
as to (i) its corporate organization, existence and articles of incorporation
and bylaws; (ii) its capitalization and corporate structure; (iii) its ownership
of other securities; (iv) its corporate power and authority; (v) the approvals
and consents required for the Merger and the compliance of the Agreement and the
Merger with (a) its articles of incorporation and bylaws, (b) applicable laws,
and (c) certain material agreements; (vi) governmental and third-party
approvals; (vii) timely filing of required regulatory reports; (viii) the
accuracy and completeness of its financial statements and filings with
applicable regulatory authorities; (ix) the absence of certain changes in its
business since December 31, 1997; (x) the absence of undisclosed liabilities;
(xi) the absence of material legal proceedings and injunctions; (xii) the
absence of regulatory proceedings; (xii) the completeness of its regulatory
filings since December 31, 1996; (xiii) its compliance with all other laws and
permits and its articles of incorporation and bylaws; (xiv) the absence of
undisclosed material contracts or contracts that materially restrict the conduct
of its business; (xv) the absence of any knowledge of its default of any
material contract; (xvi) the absence of broker's fees except as disclosed;
(xvii) its compliance with labor laws and the lack of any knowledge of the
resignation of key employees; (xviii) its employee benefit plans and related
matters; (xix) its labor matters; (xx) its properties; (xxi) its environmental
matters; (xxii) the filing, payment and accuracy of its tax returns; (xxiii) its
risk management instruments; (xxiv) the accuracy of its books and records; (xxv)
its loan portfolio; (xxvi) the accuracy of its insurance policy disclosure and
the absence of default on such policies; (xxvii) its affiliate transactions;
(xxviii) its proper administration of fiduciary accounts; and (xxix) its
millennium compliance.
 
    USB on the other hand, has given representations and warranties as to (i)
its corporate organization, existence and certificate of incorporation and
by-laws; (ii) its capitalization and corporate structure; (iii) its corporate
power and authority; (iv) the approvals and consents required for the Merger and
the compliance of the Agreement and the Merger with (a) its certificate of
incorporation and by-laws, (b) applicable laws, and (c) certain material
agreements; (v) the timely filing of required regulatory reports (including the
Securities and Exchange Commission filings) and their accuracy and completeness;
(vi) the absence of certain changes in its business since December 31, 1997;
(vii) the absence of broker's fees; (vii) the qualification of the Merger within
the meaning of Section 368 of the Code; and (viii) the absence of regulatory
proceedings.
 
CONDUCT OF BUSINESS PENDING THE MERGER AND OTHER AGREEMENTS
 
    Pursuant to the Agreement, prior to the Effective Time, each of USB and BOC
has agreed not to (i) willfully take any action that such party should know
would materially adversely affect or delay the ability of such party to perform
any of its obligations under the Agreement in a timely manner; (ii) take any
action that would, or would be reasonably likely to prevent the Merger from
qualifying as a reorganization within the meaning of Section 368 of the Code; or
(iii) knowingly take any action that is intended or is reasonably likely to
result in (A) any of its representations in the Agreement becoming untrue in any
material respect, (B) any of the conditions of the Merger not being satisfied,
or (C) a material violation of the Agreement, except in each case as required by
law.
 
                                       27
<PAGE>
    BOC has agreed, in addition to the foregoing, not to (i) conduct its
business except in the ordinary course; (ii) alter its capital structure; (iii)
make, declare or pay any dividend on its capital stock above $0.05 per share of
BOC Common Stock; (iv) enter into or make material changes to its employment
agreements; (v) enter into or materially change its employee benefit plans; (vi)
dispose of or discontinue any of its assets, deposits, business or properties,
except in the ordinary course of business; (vii) acquire or agree to acquire any
material assets except in the ordinary course of business; (viii) make any
capital expenditures out of the ordinary course of business or over $100,000
individually or $1,000,000 in the aggregate; (ix) amend the BOC articles of
incorporation or bylaws; (x) implement or adopt any change in its financial
accounting principles, practices or methods, other than as may be required by
GAAP or regulatory accounting principles; (xi) enter into, terminate or renew or
amend any material contract, except in the ordinary course of business; (xii)
incur any indebtedness or any material liability, except in the ordinary course
of business; (xiii) discharge any material lien or encumbrances on BOC's assets
or pay or cancel any material debt; (xiv) fail to maintain its current insurance
policies or replace them without providing substantially equal coverage; (xv)
enter into any settlement in excess of $100,000 after the date of the Agreement;
(xvi) make any agreement binding it to extend credit, except in the ordinary
course of business, or in any event extend credit exceeding $3,500,000 (xvii)
sell loans except in the ordinary course of business; (xviii) implement or adopt
any material change in its interest rate and other risk management policies,
procedures or practice; or (xix) agree or commit to do any of the foregoing.
 
LIMITATION ON ACQUISITION PROPOSALS
 
    BOC has agreed not to solicit, encourage, provide nonpublic information for
or otherwise facilitate any inquiries relating to, or the making of, any
takeover proposal (as defined in the Agreement) with respect to BOC. However, if
BOC's Board of Directors should reasonably determine that it has a fiduciary
duty to consider an unsolicited bona fide written takeover proposal that in the
good faith judgement of the BOC Board of Directors (based on the advice of an
independent financial advisor) is more favorable to BOC's shareholders than the
Merger and which is made by a party financially capable of consummating such
takeover proposal (a "SUPERIOR PROPOSAL"), BOC may participate in discussions or
negotiations or provide nonpublic information regarding BOC in furtherance of
that Superior Proposal. BOC may also communicate information about a takeover
proposal to its shareholders if it is required to do so by law, according to
advice of outside counsel. BOC is required to inform USB of any bona fide
written takeover proposal, its general terms, and the identity of the party
making the proposal within two business days of receipt.
 
CONDITIONS TO COMPLETION OF THE MERGER
 
    CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE MERGER
 
    The respective obligation of each of USB and BOC to consummate the Merger is
subject to the fulfillment or written waiver by USB and BOC prior to the
Effective Time of each of the following conditions:
 
    (a) The Agreement and the Merger shall have been duly adopted by the
       requisite vote of the shareholders of BOC.
 
    (b) All regulatory approvals required to consummate the Merger and the other
       transactions contemplated by the Agreement shall have been obtained and
       shall remain in full force and effect and all statutory waiting periods
       in respect thereof shall have expired.
 
    (c) No Governmental Authority of competent jurisdiction shall have enacted,
       issued, promulgated, enforced or entered any statute, rule or regulation,
       or any judgment, decree, injunction or other order (whether temporary,
       preliminary or permanent) (an "INJUNCTION") which is in effect and
       prohibits consummation of the transactions contemplated by the Agreement.
 
                                       28
<PAGE>
    (d) The Registration Statement shall have become effective under the
       Securities Act and no stop order suspending the effectiveness of the
       Registration Statement shall have been issued and no proceedings for that
       purpose shall have been initiated or threatened by the SEC. The USB
       Common Stock to be issued in the Merger shall have been approved for
       listing on USB's Stock Exchange, subject to official notice of issuance.
 
    (e) All permits and other authorizations under state securities laws
       necessary to consummate the transactions contemplated by the Agreement
       and to issue the shares of USB Common Stock to be issued in the Merger
       shall have been received and be in full force and effect.
 
    CONDITIONS TO OBLIGATION OF BOC
 
    The obligation of BOC to consummate the Merger is also subject to the
fulfillment or written waiver by BOC prior to the Effective Time of each of the
following conditions:
 
    (a) The representations and warranties of USB set forth in the Agreement
       must be true and correct as of the date of the Agreement and as of the
       Effective Date as though made on and as of the Effective Date (except for
       representations and warranties that by their terms speak only as of the
       date of the Agreement or some other date shall be true and correct as of
       such date); and BOC must have received a certificate, dated the Effective
       Date, signed on behalf of USB by the Chief Executive Officer and the
       Chief Financial Officer of USB to such effect.
 
    (b) USB must have performed in all material respects all obligations
       required to be performed by it under the Agreement at or prior to the
       Effective Time, and BOC must have received a certificate, dated the
       Effective Date, signed on behalf of USB by the Chief Executive Officer
       and the Chief Financial Officer of USB to such effect.
 
    (c) BOC must have received an opinion of Skadden, Arps, Slate, Meagher &
       Flom LLP, special counsel to BOC, in form and substance reasonably
       satisfactory to BOC, dated the Effective Date, 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 constitutes a "reorganization"
       within the meaning of Section 368 of the Code.
 
    (d) No proceeding initiated by any governmental authority seeking an
       Injunction shall be pending.
 
    CONDITIONS TO OBLIGATION OF USB
 
    The obligation of USB to consummate the Merger is also subject to the
fulfillment or written waiver by USB prior to the Effective Time of each of the
following conditions:
 
    (a) The representations and warranties of BOC set forth in the Agreement
       must be true and correct as of the date of the Agreement and as of the
       Effective Date as though made on and as of the Effective Date (except
       that representations and warranties that by their terms speak only as of
       the date of the Agreement or some other date shall be true and correct as
       of such date); and USB must have received a certificate, dated the
       Effective Date, signed on behalf of BOC by the Chief Executive Officer
       and the Chief Financial Officer of BOC to such effect.
 
    (b) BOC must have performed in all material respects all obligations
       required to be performed by it under the Agreement at or prior to the
       Effective Time; provided that BOC must have performed its agreements
       regarding capital stock and dividends contained in Sections 4.01(c) and
       (d) of the Agreement in all respects; and USB must have received a
       certificate, dated the Effective Date, signed on behalf of BOC by the
       Chief Executive Officer and the Chief Financial Officer of BOC to such
       effect.
 
                                       29
<PAGE>
    (c) USB must have received an opinion of Dorsey & Whitney LLP, special
       counsel to USB, dated the Effective Date, to the effect that, on the
       basis of facts, representations and assumptions set forth in such
       opinion, the Merger constitutes a "reorganization" within the meaning of
       Section 368 of the Code.
 
    (d) No proceeding initiated by any governmental authority seeking an
       Injunction shall be pending.
 
REGULATORY APPROVALS REQUIRED FOR THE MERGER
 
    BOC and USB each agreed to use its reasonable best efforts in good faith to
take all actions, and to do all things necessary, proper or desirable, or
advisable under applicable laws, so as to permit completion of the Merger as
promptly as practicable and otherwise to enable completion of the Merger and to
cooperate fully with the other party to that end. In addition, each agreed to
provide truthful information in any regulatory filings and to promptly correct
any material omission.
 
    The requisite regulatory approvals for the Merger include approval from the
OCC and various state regulatory authorities. The Merger cannot proceed in the
absence of these regulatory approvals. There can be no assurance that such
approvals will be obtained, and, if obtained, there can be no assurance as to
the date of any such approvals or the absence of any litigation challenging such
approvals. USB and BOC are not aware of any other material governmental
approvals or actions that are required prior to the parties consummation of the
Merger other than those described 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 of the approvals or actions will be obtained.
 
    COMPTROLLER OF THE CURRENCY
 
    The Merger is subject to the prior approval of the OCC under: (a) Sections
36(d) and 215a of the National Bank Act, as amended; (b) Section 18(c) of the
Federal Deposit Insurance Act, as amended (commonly known as the "BANK MERGER
ACT"); (c) Sections 102(a) and 102(b)(4) of the Riegle-Neal Interstate Banking
and Branching Efficiency Act of 1994 (the "RIEGLE-NEAL ACT"); and (d)
regulations promulgated under those statutes by the OCC.
 
    The Bank Merger Act requires the OCC, when approving a transaction such as
the Merger, to take into consideration the financial and managerial resources
(including the competence, experience and integrity of the officers, directors
and principal shareholders) and future prospects of the existing and proposed
institutions and the convenience and needs of the communities to be served. In
addition, under the Community Reinvestment Act of 1977, as amended, the OCC must
take into account the record of performance of the existing institutions in
meeting the credit needs of the entire community, including low- and
moderate-income neighborhoods, served by such institutions.
 
    The Bank Merger Act prohibits the OCC from approving an application for
approval of the Merger if it would result in a monopoly, or if it 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. The Bank
Merger Act also prohibits the OCC from approving an application for approval of
the Merger if its effect in any section of the United States may be to
substantially lessen competition, or to tend to create a monopoly, or if it
would in any other manner result in a restraint of trade, unless the OCC finds
that the anticompetitive effects of the Merger 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.
 
    Subject to certain conditions, the Riegle-Neal Act authorizes mergers
between banks with different home states. The Riegle-Neal Act prohibits the OCC
from approving an application for approval of the Merger unless: (a) US Bank
submits a copy of the application to the California Department of
 
                                       30
<PAGE>
Financial Institutions and, subject to certain limitations, complies with any
California state filing requirements; (b) upon consummation of the transaction,
US Bank would control less than 10 percent of the total amount of deposits of
insured depository institutions in the United States and less than 30 percent of
the total amount of deposits of insured depository institutions in the State of
California; and (c) US Bank and BOC are adequately capitalized as of the date
the application is filed and the OCC determines that US Bank will continue to be
adequately capitalized and adequately managed upon consummation of the Merger.
 
    The OCC will furnish notice and a copy of the application for approval of
the Merger to, and shall request reports on the competitive factors involved in
the Merger from, the Board of Governors of the Federal Reserve System, the
Federal Deposit Insurance Corporation ("FDIC") and the United States Department
of Justice ("DOJ"). These agencies have 30 days to submit their views and
recommendations to the OCC. The Bank Merger Act also provides for the
publication of notice of applications filed with the OCC, and authorizes
interested parties to submit comments and request hearings on such applications.
The OCC may grant or deny a request for a hearing and may limit the issues to
those the OCC deems relevant or material. If the OCC should grant a request for
a hearing, such action could delay the regulatory approvals required for
consummation of the Merger.
 
    Assuming OCC approval, the Merger may not be consummated until 30 days after
such approval, during which time the DOJ may challenge the Merger on antitrust
grounds. The commencement of an antitrust action would stay the effectiveness of
the OCC's approval unless a court specifically ordered otherwise. With the
approval of the OCC and the concurrence of the DOJ, the waiting period may be
reduced to not less than 15 days. USB and BOC believe that the Merger does not
raise substantial antitrust or other significant regulatory concerns and that
they will be able to obtain all requisite regulatory approvals on a timely basis
without the imposition of any condition that would have a material adverse
effect on US Bank.
 
    STATUS OF REGULATORY APPROVALS AND OTHER INFORMATION
 
    USB, BOC and US Bank have filed all applications and notices and have taken
(or will promptly take) other appropriate actions with respect to any requisite
approvals or other actions of any governmental authority. US Bank submitted its
application to the OCC and provided a copy to the California Department of
Financial Institutions on March 26, 1999. The application was accepted for
processing by the OCC on [April]   , 1999.
 
    THE MERGER CANNOT PROCEED IN THE ABSENCE OF THE REQUISITE REGULATORY
APPROVALS. THERE CAN BE NO ASSURANCES THAT ALL SUCH REGULATORY APPROVALS WILL BE
OBTAINED OR AS TO THE DATES OF SUCH APPROVALS. THERE CAN ALSO BE NO ASSURANCE
THAT SUCH APPROVALS WILL NOT CONTAIN A CONDITION OR REQUIREMENT THAT CAUSES SUCH
APPROVALS TO FAIL TO SATISFY THE CONDITIONS SET FORTH IN THE AGREEMENT. SEE "THE
MERGER (PROPOSAL 1)--CONDITIONS TO CONSUMMATION OF THE MERGER"
 
TERMINATION OF THE AGREEMENT
 
    The Agreement may be terminated, and the Merger may be abandoned, whether
before or after approval of the matters presented in connection with the Merger
by the shareholders of BOC.
 
    (a) At any time prior to the Effective Time, the Agreement may be terminated
       by the mutual consent of USB and BOC, if the Board of Directors of each
       so determines by vote of a majority of the members of their respective
       Boards of Directors.
 
                                       31
<PAGE>
    (b) At any time prior to the Effective Time, the Agreement may be terminated
       by USB or BOC, upon written notice to the other party, in the event of
       either:
 
       (i) a breach by the other party of any representation or warranty
           contained in the Agreement, which breach cannot be or has not been
           cured within 30 days after the giving of written notice to the
           breaching party of such breach, or
 
       (ii) a breach by the other party of any of the covenants or agreements
           contained in the Agreement, which breach cannot be or has not been
           cured within 30 days after the giving of written notice to the
           breaching party of such breach, provided that such breach
           individually or in the aggregate with other breaches, has had or is
           reasonably expected to have a material adverse effect on the
           non-breaching party.
 
    (c) At any time prior to the Effective Time, the Agreement may be terminated
       by USB or BOC, in the event that the Merger is not consummated by
       September 30, 1999, except to the extent that the failure of the Merger
       then to be consummated arises out of or results from the failure of the
       party seeking to terminate, to perform or observe the covenants and
       agreements of such party set forth in the Agreement.
 
    (d) The Agreement may be terminated by BOC or USB in the event that the
       approval of any governmental authority required for consummation of the
       Merger and the other transactions contemplated by the Agreement shall
       have been denied by final nonappealable action of such governmental
       authority, or the Agreement may be terminated by BOC or USB in the event
       that the approval of the shareholders of BOC required for adoption of the
       Agreement and Merger is not obtained at the Annual Meeting.
 
    (e) At any time prior to the Annual Meeting, the Agreement may be terminated
       by USB if the BOC Board of Directors shall have failed to recommend the
       Merger to the shareholders of BOC, withdrawn such recommendation or
       modified or changed such recommendation in a manner adverse, in any
       respect, to the interests of USB.
 
    EFFECT OF TERMINATION AND ABANDONMENT
 
    Termination will not relieve a breaching party from liability for any
willful breach of the Agreement giving rise to such termination. In the event of
termination, BOC agrees to pay USB the sum of $10,000,000 (the "TERMINATION
FEE") if, but only 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 a Fee Termination Event (as defined below). Each of the following
shall be a Fee Termination Event: (i) the Effective Time; (ii) termination of
the Merger in accordance with the provisions of the Agreement if such
termination occurs prior to the occurrence of an Initial Triggering Event except
a termination by USB for BOC's breach of the Agreement; or (iii) the passage of
twelve (12) months after termination of the Merger if such termination is
concurrent with or follows the occurrence of an Initial Triggering Event or is a
termination by USB due to breach by BOC of the Agreement. Notwithstanding
anything to the contrary contained herein, the Termination Fee shall not be
payable at any time when USB shall be in material breach of any of its covenants
or agreements contained in the Agreement such that BOC shall be entitled to
terminate the Agreement.
 
    The term "INITIAL TRIGGERING EVENT" shall mean any of the following events
or transactions occurring on or after the date of the Agreement:
 
(i) BOC, without having received USB'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 definition
    having the meaning assigned thereto in Sections 3(a)(9) and 13(d)(3) of the
    Securities Exchange Act of 1934, as amended (the "EXCHANGE ACT"), and the
    rules and regulations thereunder) other than USB or any of its Subsidiaries
    (each a "USB
 
                                       32
<PAGE>
    SUBSIDIARY"), or the BOC Board of Directors shall have recommended that the
    shareholders of BOC approve or accept any Acquisition Transaction other than
    as contemplated by the Agreement. For purposes of these provisions, (a)
    "ACQUISITION TRANSACTION" shall mean (x) a merger or consolidation, or any
    similar transaction, involving BOC or any "SIGNIFICANT SUBSIDIARY" (as
    defined in Rule 1-02 of Regulation S-X promulgated by the SEC) of BOC, (y) a
    purchase, lease or other acquisition of all or substantially all of the
    assets or deposits of BOC or any Significant Subsidiary of BOC, or (z) a
    purchase or other acquisition (including by way of merger, consolidation,
    share exchange or otherwise) of securities representing 20% or more of the
    voting power of BOC or any Significant Subsidiary of BOC and (b) for
    purposes of these provisions, "SUBSIDIARY" shall have the meaning set forth
    in Rule 12b-2 under the Exchange Act; or
 
(ii) The BOC Board of Directors shall have failed to make, withdrawn or modified
    (or publicly announced its intention to withdraw or modify), in any manner
    adverse to USB, its recommendation that the shareholders of BOC approve the
    transactions contemplated by the Agreement, or BOC or any BOC Subsidiary,
    without having received USB's prior written consent, shall have authorized,
    recommended, proposed (or publicly announced its intention to authorize,
    recommend or propose) an agreement to engage in an Acquisition Transaction
    with any person other than USB or a USB Subsidiary; or
 
(iii) Any person other than USB or a USB Subsidiary shall have made a proposal
    to BOC or its shareholders to engage in an Acquisition Transaction and such
    proposal shall have been publicly announced.
 
    The term "SUBSEQUENT TRIGGERING EVENT" shall mean the signing of a
definitive agreement with respect to or the completion of an Acquisition
Transaction (except that the percentage for purposes of part (z) of clause (a)
of subparagraph (b)(i) above shall be 51%) which has been approved by resolution
of the BOC Board of Directors.
 
    BOC shall notify USB 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 BOC shall not be
a condition to the right of USB to demand payment of the Termination Fee.
 
    The Termination Fee shall supplant and supersede any damages or other
amounts then payable by BOC to USB under the Agreement. If USB collects the
Termination Fee, USB shall be deemed to have waived the right to damages against
BOC for breach of the Agreement in excess of the Termination Fee. If BOC shall
previously have paid damages to USB in respect of a breach of the Agreement by
BOC, the amount of the Termination Fee payable under this section shall be
reduced by the amount of paid damages and any excess damages shall be repaid to
BOC.
 
EXTENSION, WAIVER AND AMENDMENT OF THE AGREEMENT
 
    At any time prior to the Effective Time, USB and BOC, by action taken or
authorized by their respective Boards of Directors, may, to the extent legally
allowed, (i) extend the 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 contained in the Agreement or in any document
delivered pursuant to the Agreement or (iii) waive compliance with any of the
agreements or conditions contained in the Agreement. Any agreement on the part
of a party 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.
 
    Prior to the Effective Time, any provision of the Agreement may be amended
or modified at any time by an agreement in writing between the parties, executed
in the same manner as the Agreement,
 
                                       33
<PAGE>
except that after the Annual Meeting, the Agreement may not be amended if it
would violate the California General Corporate Law (the "CGCL") or reduce the
amount or change the form of the consideration to be received by BOC
Shareholders in the Merger.
 
STOCK EXCHANGE LISTING
 
    USB has agreed to use its reasonable best efforts to list, prior to the
Effective Date, on the New York Stock Exchange, subject to official notice of
issuance, the shares of USB Common Stock to be issued to the holders of BOC
Common Stock in the Merger.
 
EXPENSES
 
    The Agreement provides that each of USB and BOC will pay its own expenses in
connection with the Merger and the transactions contemplated thereby.
 
INDEMNIFICATION OF BOC DIRECTORS AND OFFICERS BY USB
 
    USB has agreed to indemnify and hold harmless all present and former BOC
directors and officers against costs and expenses in connection with any actual
or threatened claim or proceeding, arising out of matters existing or occurring
at or prior to the Effective Time, to the fullest extent permitted by Delaware
law. USB has also agreed, for a period of three years after the Effective Date,
to provide insurance for BOC's officers and directors with respect to claims
against such officers and directors arising from facts or events which occurred
on or before the Effective Time.
 
INTERESTS OF CERTAIN PERSONS IN THE MERGER
 
    BOC AFFILIATE AGREEMENTS
 
    Each BOC Director and Executive Officer has entered into a Affiliate
Agreement in accordance with the terms of the Agreement. Under each Affiliate
Agreement, the Director or Executive Officer agrees to vote his or her shares of
BOC Common Stock in favor of the Agreement and the Merger and all transactions
relating thereto. This obligation exists only so long as the BOC Board of
Directors recommends to the BOC shareholders that they vote in favor of the
Merger.
 
    Each Director and Executive Officer also agrees not to sell his or her
shares other than in compliance with Rule 145 under the Securities Act ("RULE
145"), and agrees to the imposition of legends and stop transfer instructions
with respect to their USB Common Stock to insure compliance with that rule. The
Rule 145 restrictions should lapse after one year for each of the BOC Directors
and Executive Officers. While they are in force, in general, a BOC Director or
Executive Officer will be able to sell his or her shares of USB Common Stock in
open market transactions provided that the sales are made in brokered
transactions and meet the other requirements of Rule 145. See "THE MERGER
(PROPOSAL 1)--Restrictions on Resales by Affiliates."
 
    BOC CHIEF EXECUTIVE OFFICER ARRANGEMENTS
 
    Peter Q. Davis, the Chairman, Chief Executive Officer and President of BOC,
USB and BOC entered into an Employment Agreement dated as of February 18, 1999
(the "BOC CEO EMPLOYMENT AGREEMENT"). As of the same date, USB and Mr. Davis
entered into a Confidentiality/Nonsolicitation Agreement (the "BOC CEO
CONFIDENTIALITY AGREEMENT"). The BOC CEO Employment Agreement provides terms
under which Mr. Davis will serve as an employee of USB after the Effective Time.
The BOC CEO Confidentiality Agreement provides USB with certain protections of
confidential information and employee and customer relationships and protects it
from unfair competition by Mr. Davis. These protections are effective during
certain specific time periods commencing on February 18, 1999.
 
                                       34
<PAGE>
    The terms of Mr. Davis' current employment arrangements and compensation are
set forth in the CEO Compensation and Benefits Agreement, a Salary Continuation
Agreement, the CEO Disability Policy, the Executive Medical Reimbursement Plan
and various outstanding BOC Stock Options. See "EXECUTIVE AND DIRECTOR
COMPENSATION OF BANK OF COMMERCE." The BOC CEO Employment Agreement changes the
timing, but not generally the amount, of payments otherwise required under his
current employment arrangements with BOC. Mr. Davis does not currently have any
agreement comparable to the BOC CEO Confidentiality Agreement.
 
    The BOC CEO Employment Agreement and the BOC CEO Confidentiality Agreement
are interrelated. Breaches of the BOC CEO Confidentiality Agreement may cause
Mr. Davis to lose the right to specific payments otherwise required to be made
under the BOC CEO Employment Agreement. The payments to be made to Mr. Davis
under the BOC CEO Employment Agreement other than his base salary, totaling
$4,695,687 will be deposited with a third party escrow agent subject to the
terms of an escrow agreement.
 
    Under the BOC CEO Employment Agreement, Mr. Davis has been employed through
November 30, 2000 to assist USB and US Bank during the transition following the
Effective Time. Mr. Davis will be paid an annual base salary of $311,832 through
1999 and $330,541 through the end of the term. These amounts are comparable to
the amounts to which Mr. Davis is currently entitled under his existing
employment arrangements with BOC. After the Effective Time, Mr. Davis will no
longer be entitled to a bonus payment under his existing employment
arrangements, but rather, will be entitled to a single bonus payment of $250,000
on November 30, 2000. In addition, after the Effective Time, Mr. Davis will be
entitled to the retention incentives, change of control payments, termination
benefits and salary continuation payments, in an aggregate amount totaling
$4,445,687, as currently provided under his employment arrangements with BOC,
subject to certain provisions regarding the delay of some of such payments and
the possible forfeiture of some of such payments in the event of certain
breaches of the BOC CEO Confidentiality Agreement.
 
    At the Effective Time, Mr. Davis will receive restricted shares of USB
Common Stock having a value of $250,000 as of the Effective Time and an option
to purchase 24,000 shares of USB Common Stock at the fair market value of such
stock at the Effective Time. These restricted shares and options will vest as
follows: 50% on the second anniversary of the Effective Time, 25% on the third
anniversary of the Effective Time and 25% on the fourth anniversary of the
Effective Time. In addition, USB and BOC agreed to extend the term of Mr. Davis'
existing options to purchase 300,000 shares of BOC Common Stock to a period
ending five years after the Effective Time.
 
    SENIOR EXECUTIVE VICE PRESIDENT ARRANGEMENTS
 
    David H. Bartram, the Senior Executive Vice President of BOC, USB and BOC
entered into an Employment Agreement dated as of February 18, 1999 (the "BOC
SEVP EMPLOYMENT AGREEMENT"). As of the same date, USB and Mr. Bartram entered
into a Confidentiality/Nonsolicitation Agreement (the "BOC SEVP CONFIDENTIALITY
AGREEMENT"). The BOC SEVP Employment Agreement provides terms under which Mr.
Bartram will serve as an employee of USB after the Effective Time. The BOC SEVP
Confidentiality Agreement provides USB with certain protections of confidential
information and employee and customer relationships and protects it from unfair
competition by Mr. Bartram. These protections are effective during certain
specific time periods commencing on February 18, 1999.
 
    The terms of Mr. Bartram's current employment arrangements and compensation
are set forth in his Employment Agreement, the Executive Salary Continuation
Agreement, his Disability Policy, the Executive Medical Reimbursement Plan and
various outstanding BOC Stock Options. See "Executive and Director Compensation
of Bank of Commerce." The BOC SEVP Employment Agreement changes the time, but
not generally the amount, of payments otherwise required under Mr. Bartram's
current
 
                                       35
<PAGE>
employment arrangements with BOC. Mr. Bartram does not currently have any
agreement comparable to the BOC SEVP Confidentiality Agreement.
 
    The BOC SEVP Employment Agreement and the BOC SEVP Confidentiality Agreement
are interrelated. Breaches of the BOC SEVP Confidentiality Agreement may cause
Mr. Bartram to lose the right to specific payments otherwise required to be made
under the BOC SEVP Employment Agreement.
 
    Under the BOC SEVP Employment Agreement, Mr. Bartram has been employed
through the second anniversary of the Effective Time to serve as President, SBA
Division of US Bank. Mr. Bartram will be paid an annual base salary of $220,921
through 1999, $234,176 for 2000 and $248,227 through the end of the term. These
amounts are comparable to the amounts to which Mr. Bartram is currently entitled
under his existing employment arrangements with BOC. After the Effective Time,
Mr. Bartram will be eligible to receive bonus compensation substantially similar
to the bonus compensation to which he is entitled under his existing employment
arrangements with BOC. In addition, after the Effective Time, Mr. Bartram will
be entitled to the change of control payments and salary continuation payments
(assuming termination not earlier than two years after the Effective Time) in an
aggregate amount totaling $1,378,855 as currently provided under his employment
arrangements with BOC. In addition, in the event that Mr. Bartram's employment
with USB is terminated under certain circumstances during the two years
following the Effective Time, Mr. Bartram will also be entitled to severance
payments equal to 24 months of his base salary as of the date of termination,
plus bonus pay equal to any bonuses earned in the 24 months prior to the date of
termination. An additional bonus, $165,652, would be paid to Mr. Bartram at the
end of two years after the Effective Time. The change of control payment and
certain other payments to Mr. Bartram to which he is entitled under his current
employment arrangements are delayed. The change of control payments and certain
other payments are subject to the possible forfeiture of such payments in the
event of certain breaches of the BOC SEVP Confidentiality Agreement.
 
    At the Effective Time, Mr. Bartram will receive restricted shares of USB
Common Stock having a value of $250,000 as of the Effective Time and an option
to purchase 24,000 shares of USB Common Stock at the fair market value of such
stock at the Effective Time. These restricted shares and options will vest as
follows: 50% on the second anniversary of the Effective Time, 25% on the third
anniversary of the Effective Time and 25% on the fourth anniversary of the
Effective Time.
 
    SECTION 280G PROTECTIONS
 
    Code Section 280G and related Code sections address the taxation of "excess
parachute payments." In general, an "excess parachute payment" is any amount
exceeding a specified threshold that is payable with respect to a change in
control of a company. If the threshold is exceeded, not only the amount of the
excess, but the amount up to the threshold as well, is subject to a 20% excise
tax. Payments to an employee in consideration of the performance of services,
acts and agreements not to act and accommodations that are reasonable
compensation are not deemed included in determining whether there is an "excess
parachute payment." Neither USB nor BOC believe that any of the payments to Mr.
Davis or Mr. Bartram contemplated under the arrangements discussed above will
exceed the applicable threshold or result in an "excess parachute payment."
 
    The BOC CEO Employment Agreement contains certain limited protections for
Mr. Davis in the event that an applicable threshold is exceeded and an "excess
parachute payment" is deemed made. In the event that Mr. Davis is terminated
other than for cause and the auditors of USB or a tax authority determine that
any payment or benefit received or to be received by Mr. Davis would be subject
to the excise tax, then USB would make an additional "gross-up" cash payment.
This payment would be large enough to offset the excise tax on an after-tax
basis.
 
                                       36
<PAGE>
    The BOC SEVP Employment Agreement contains certain limited protections for
Mr. Bartram in the event that an applicable threshold is exceeded and an "excess
parachute payment" is deemed made. In the event that any payment or benefit
received or to be received by Mr. Bartram would be subject to the excise tax,
then USB would reduce the compensation to Mr. Bartram so that he would not be
subject to the excise tax. However, if the net amount Mr. Bartram would receive
after application of the excise tax would be higher than the amount he would
receive if USB reduced his compensation, he will receive the full amount of the
compensation without reduction.
 
    OWNERSHIP OF BOC AND BOC COMMON STOCK
 
    As of March 31, 1999, the BOC Directors and executive officers owned an
aggregate 3,230,573 shares of BOC Common Stock (20.77%) which, if owned by them
at the Effective Time, will be converted into shares of USB Common Stock. See
"ELECTION OF DIRECTORS OF BANK OF COMMERCE (PROPOSAL 2)--Securities Ownership of
Executive Officers, Directors and Others."
 
    BOC STOCK OPTIONS
 
    Certain executive officers of BOC have outstanding stock options under the
BOC Plans, for a total of 495,500 shares of BOC Common Stock as of March 31,
1999. All of the outstanding BOC Options will become fully vested as a result of
the Merger. See "ELECTION OF DIRECTORS OF BANK OF COMMERCE (PROPOSAL
2)--Securities Ownership of Executive Officers, Directors and Others."
 
    INDEMNIFICATION AND DIRECTORS' AND OFFICERS' INSURANCE
 
    The Agreement requires that USB use its best efforts to continue directors'
and officers' liability insurance for directors and officers of BOC for a period
of three years after the Effective Time. This insurance would cover claims
arising from facts or events occurring on or before the Effective Time. USB is
obligated to expend no more than 200% per annum of the current amount expended
by BOC per annum to maintain directors and officers insurance coverage. In any
case, USB is obligated to indemnify any present or former director or officer as
of the Effective Time against claims arising out of matters existing or
occurring at or prior to the Effective Time. See "THE MERGER (PROPOSAL
1)--Indemnification of BOC Directors and Officers by USB."
 
RESTRICTIONS ON RESALES BY AFFILIATES
 
    The issuance of shares of USB Common Stock to BOC Shareholders in the Merger
have been registered under the Securities Act. The shares of USB Common Stock
exchanged in the Merger may be traded freely and without restriction by those
shareholders not deemed to be "affiliates" of BOC as that term is defined under
the Securities Act. An affiliate of BOC, as defined by the rules promulgated
pursuant to the Securities Act, is a person who directly, or indirectly through
one or more intermediaries, controls, is controlled by, or is under common
control with, BOC. Any subsequent transfer of such shares by any person who is
an affiliate of BOC at the time the Merger is submitted for vote of the holders
of BOC Common Stock will, under existing law, require either (i) the further
registration under the Securities Act of the shares of USB Common Stock to be
transferred, (ii) compliance with Rule 145 promulgated under the Securities Act
(permitting limited sales under certain circumstances) or (iii) the availability
of another exemption from registration. The foregoing restrictions are expected
to apply to the directors and executive officers of BOC and the holders of 10%
or more of the BOC Common Stock (and to certain relatives or the spouse of any
such person and any trusts, estates, corporations or other entities in which any
such person has a 10% or greater beneficial or equity interest). Stop transfer
instructions will be given by USB to the transfer agent with respect to the USB
Common Stock to be received by persons subject to the restrictions described
above, and the certificates for such stock will be appropriately legended.
 
                                       37
<PAGE>
    BOC has agreed in the Agreement to use its best efforts to cause each person
who is an affiliate (for purposes of Rule 145 of the Securities Act) of BOC to
deliver to USB a written agreement intended to ensure compliance with the
Securities Act. Each of such persons of whom BOC has knowledge has entered into
an Affiliate Agreement in satisfaction of this requirement.
 
BANK OF COMMERCE EMPLOYEE STOCK PURCHASE PLAN AND EMPLOYEE STOCK OWNERSHIP PLAN.
 
    EMPLOYEE STOCK PURCHASE PLAN VOTING RIGHTS
 
    Under the BOC Employee Stock Purchase Plan (the "STOCK PURCHASE PLAN"), each
participant has all the rights of shareholders of BOC with respect to voting
shares allocated to his or her account. Procedurally, the rights are exercised
by giving directions to the Plan Custodian who then votes on behalf of the
participant. If the participant provides no direction on or prior to
           , 1999 the Plan Custodian is obligated to execute and return the
proxies and indicate "abstention" as to all matters for which participant
direction has not been received. Participants will not be permitted to vote in
person at the Annual Meeting with respect to the shares allocated to their
accounts.
 
    EMPLOYEE STOCK OWNERSHIP PLAN VOTING RIGHTS
 
    Under the BOC Employee Stock Ownership Plan (the "ESOP"), the trustees must
vote shares which have been allocated in accordance with the participant's
directions. Shares from which the trustees receive no direction on or prior to
           , 1999 must not be voted. Shares which are not allocated to
participants are voted by the trustees as they determine in their sole
discretion. There are no shares owned by the trustees of the ESOP which have not
been allocated to participants' accounts, and therefore the trustees have no
discretionary voting rights with respect to stock owned by the ESOP.
Participants will not be permitted to vote in person at the Annual Meeting with
respect to the shares allocated to their accounts.
 
MATERIAL FEDERAL INCOME TAX CONSEQUENCES
 
    The following is a summary of the material anticipated United States federal
income tax consequences of the Merger to BOC Shareholders who hold BOC Common
Stock as a capital asset. The summary is based on the Code, Treasury regulations
thereunder and administrative rulings and court decisions in effect as of the
date of this Proxy Statement/Prospectus, all of which are subject to change at
any time, possibly with retroactive effect. This summary is not a complete
description of all of the tax consequences of the Merger and, in particular, may
not address United States federal income tax considerations applicable to
shareholders subject to special treatment under United States federal income tax
law (including, for example, foreign persons, financial institutions, dealers in
securities, insurance companies, tax-exempt entities, holders who acquired their
shares of BOC Common Stock pursuant to the exercise of an employee stock option
or right or otherwise as compensation and holders who hold BOC Common Stock as
part of a hedge, straddle or conversion transaction). In addition, this summary
does not include the tax consequences of the Merger under applicable foreign,
state or local laws.
 
    HOLDERS OF BOC COMMON STOCK ARE URGED TO CONSULT WITH THEIR TAX ADVISORS
REGARDING THE PARTICULAR TAX CONSEQUENCES OF THE MERGER TO THEM, INCLUDING THE
EFFECTS OF UNITED STATES FEDERAL, STATE, LOCAL, FOREIGN AND OTHER TAX LAWS.
 
    GENERAL
 
    It is a condition to the obligation of BOC to consummate the Merger that BOC
shall have received an opinion of Skadden, Arps, Slate, Meagher & Flom LLP,
special counsel to BOC, in form and substance reasonably satisfactory to BOC,
dated the Effective Date, substantially to the effect that, on the basis of the
facts, representations and assumptions set forth in such opinion which are
consistent
 
                                       38
<PAGE>
with the state of facts existing at the Effective Time, the Merger constitutes a
"reorganization" within the meaning of Section 368 of the Code. In rendering its
opinion, Skadden, Arps, Slate, Meagher & Flom LLP may require and rely upon
representations and covenants, including those contained in letters from BOC,
USB, US Bank and others, reasonably satisfactory in form and substance to
Skadden, Arps, Slate, Meagher & Flom LLP. It is a condition to the obligation of
USB to consummate the Merger that USB shall have received an opinion of Dorsey &
Whitney LLP, counsel to USB, dated the Effective Date, to the effect that, on
the basis of the facts, representations and assumptions set forth in such
opinion, the Merger constitutes a "reorganization" within the meaning of Section
368 of the Code. In rendering its opinion, Dorsey & Whitney LLP may require and
rely upon representations and covenants, including those contained in letters
from BOC, USB, US Bank and others.
 
    On the basis of the foregoing opinions, it is expected that the following
material federal income tax consequences will result from the Merger:
 
    (i) No gain or loss will be recognized by BOC Shareholders who exchange
       their BOC Common Stock solely for USB Common Stock pursuant to the Merger
       (except with respect to cash received in lieu of a fractional share
       interest in USB Common Stock);
 
    (ii) The holding period of the USB Common Stock received by a BOC
       Shareholder who exchanges all of its BOC Common Stock for USB Common
       Stock in the Merger will include the period during which the BOC Common
       Stock surrendered in exchange therefor was held; and
 
    (iii) The basis of the USB Common Stock received by a BOC shareholder who
       exchanges all of its BOC Common Stock for USB Common Stock in the Merger
       will be the same as the basis of the BOC Common Stock surrendered in
       exchange therefor (subject to any adjustments required as the result of
       the receipt of cash in lieu of a fractional share of USB Common Stock).
 
    None of the tax opinions to be delivered to the parties in connection with
the Merger as described herein are binding on the Internal Revenue Service (the
"IRS") or the courts, and neither BOC or USB intends to request a ruling from
the IRS with respect to the Merger. Accordingly, there can be no assurances that
the IRS will not challenge the conclusions reflected in such opinions.
 
    Based on the current ruling positions of the IRS, cash received by a BOC
Shareholder in lieu of a fractional share interest in USB Common Stock generally
will be treated as received in redemption of such fractional share interest, and
a BOC Shareholder should generally recognize capital gain or loss for United
States federal income tax purposes measured by the difference between the amount
of cash received and the portion of the tax basis of the share of BOC Common
Stock allocable to such fractional share interest. Such capital gain or loss
would be a long-term capital gain or loss if the holding period for such share
of BOC Common Stock is greater than one year at the Effective Time.
 
ACCOUNTING TREATMENT
 
    The Merger will be accounted for by USB under the purchase method of
accounting in accordance with Accounting Principles Board Opinion No. 16,
"Business Combinations," as amended. Under this method of accounting, the
purchase price will be allocated to assets acquired and liabilities assumed
based on their fair market values at the date of the acquisition values. Income
of the combined company will not include income or loss of BOC prior to the
Effective Date.
 
                                       39
<PAGE>
                   PRICE RANGE OF COMMON STOCK AND DIVIDENDS
 
    U.S. BANCORP
 
    USB Common Stock is listed on the NYSE and traded under the symbol "USB."
The following table sets forth, for the periods indicated, the high and low
reported closing sale prices per share of USB Common Stock on the NYSE Composite
Transactions reporting system and cash dividends declared per share of USB
Common Stock.
 
<TABLE>
<CAPTION>
                                                                    PRICE RANGE OF
                                                                     COMMON STOCK
                                                                 --------------------
<S>                                                              <C>        <C>        <C>
                                                                                        DIVIDENDS
                                                                   HIGH        LOW        PAID
                                                                 ---------  ---------  -----------
1997
First Quarter..................................................  $   28.17  $   22.50   $    .155
Second Quarter.................................................      29.17      23.67        .155
Third Quarter..................................................      32.50      28.52        .155
Fourth Quarter.................................................      38.88      30.75        .155
 
1998
First Quarter..................................................  $   41.81  $   33.75   $    .175
Second Quarter.................................................      45.63      37.13        .175
Third Quarter..................................................      47.31      33.69        .175
Fourth Quarter.................................................      43.00      25.63        .175
 
1999
First Quarter (through March 26, 1999).........................  $   37.75  $   31.50   $   0.195
</TABLE>
 
    On February 18, 1999, the last trading day before USB and BOC publicly
announced the execution of the Agreement, the closing price per share of USB
Common Stock on the NYSE Composite Transactions reporting system was $32.938. On
[date], 1999, the last trading day prior to the date of this Proxy
Statement/Prospectus, such price was $[price]. Past price performance is not
necessarily indicative of likely future price performance. Holders of BOC Common
Stock are urged to obtain current market quotations for shares of USB Common
Stock.
 
    Holders of USB Common Stock are entitled to receive dividends from funds
legally available therefor when, as and if declared by the USB Board of
Directors. Although the USB Board of Directors presently intends to continue the
policy of paying quarterly cash dividends, future dividends of USB would depend
upon the earnings of USB and its subsidiaries, their financial condition and
other factors, including applicable governmental regulations and policies.
 
    BANK OF COMMERCE
 
    BOC Common Stock is listed on the Nasdaq Stock Market--National Market and
traded under the symbol "BCOM." The following table sets forth the high and low
closing sales prices for BOC Common Stock for the periods indicated, as listed
in the Nasdaq Stock Market--National Market reporting system, and the quarterly
cash dividends declared per share for the periods indicated. All
 
                                       40
<PAGE>
1997 prices and dividends have been adjusted for the 5 for 2 stock split
completed in May 1997, and the 2 for 1 stock split completed in December 1997.
 
<TABLE>
<CAPTION>
                                                                     PRICE RANGE
                                                                   OF COMMON STOCK
                                                                 --------------------
<S>                                                              <C>        <C>        <C>
                                                                                        DIVIDENDS
                                                                   HIGH        LOW      DECLARED
                                                                 ---------  ---------  -----------
1997
First Quarter..................................................  $    6.30  $    4.30   $   0.018
Second Quarter.................................................       7.50       5.30       0.020
Third Quarter..................................................      12.63       7.13       0.025
Fourth Quarter.................................................      23.50      10.00       0.030
 
1998
First Quarter..................................................  $   22.87  $   13.00   $    0.03
Second Quarter.................................................      23.25      15.87        0.03
Third Quarter..................................................      19.50       9.00        0.03
Fourth Quarter.................................................      17.12       9.00        0.04
 
1999
First Quarter (through March 31, 1999).........................  $   20.37  $   15.25   $    0.04
</TABLE>
 
    BOC has declared a cash dividend on its common stock for 47 consecutive
quarters. Although the payment of cash dividends cannot be guaranteed
absolutely, BOC anticipates sufficient liquidity and earnings to support the
payment of cash dividends for the foreseeable future. However, a decline in
BOC's capital ratios, liquidity, or earnings could preclude it from paying cash
dividends in the future.
 
                         INFORMATION ABOUT U.S. BANCORP
 
GENERAL
 
    USB is a regional, multi-state bank holding company headquartered in
Minneapolis, Minnesota. USB was incorporated in Delaware in 1929 and owns 100
percent of the capital stock of each of its five banks, and eleven trust
companies, having approximately 1,000 banking offices in 17 Midwestern and
Western states. USB offers full-service brokerage services at approximately 100
offices through a wholly owned subsidiary. USB also has various nonbank
subsidiaries engaged in financial services.
 
    The banks are engaged in general commercial banking business, principally in
domestic markets. They range in size from less than $1.0 million to $49.0
billion in deposits and provide a wide variety of services to individuals,
businesses, industry, institutional organizations, governmental entities, and
other financial institutions. Depository services include checking accounts,
savings accounts, and time certificate contracts. Ancillary services such as
treasury management and receivable lockbox collection are provided for corporate
customers. USB's bank and trust subsidiaries provide a full range of fiduciary
activities for individuals, estates, foundations, business corporations, and
charitable organizations.
 
    USB provides banking services through its subsidiary banks to both domestic
and foreign customers and correspondent banks. These services include consumer
banking, commercial lending, financing of import/export trade, foreign exchange,
and investment services. USB, through its subsidiaries, also provides services
in trust, commercial and agricultural finance, data processing, leasing, and
brokerage services.
 
    U.S. Bancorp was formerly known as First Bank System, Inc. and is the
organization created by the merger of First Bank System, Inc. with U.S. Bancorp
of Portland, Oregon.
 
    USB is listed on the New York Stock Exchange under the ticker symbol USB.
 
                                       41
<PAGE>
GOVERNMENT POLICIES
 
    The operations of USB's various operating units are affected by state and
federal legislative changes and by policies of various regulatory authorities,
including those of the several states in which they operate, the United States
and foreign governments. These policies include, for example, statutory maximum
legal lending rates, domestic monetary policies of the Board of Governors of the
Federal Reserve System (the "FEDERAL RESERVE BOARD"), United States fiscal
policy, international currency regulations and monetary policies, and capital
adequacy and liquidity constraints imposed by bank regulatory agencies.
 
SUPERVISION AND REGULATION
 
    USB is a registered bank holding company under the Bank Holding Company Act
of 1956 (the "ACT") and is subject to the supervision of, and regulation by, the
Federal Reserve Board.
 
    Under the Act, a bank holding company may engage in banking, managing or
controlling banks, furnishing or performing services for banks it controls, and
conducting activities that the Federal Reserve Board has determined to be
closely related to banking. USB must obtain the prior approval of the Federal
Reserve Board before acquiring more than 5 percent of the outstanding shares of
another bank or bank holding company, and must provide notice to, and in some
situations obtain the prior approval of, the Federal Reserve Board in connection
with the acquisition of more than 5 percent of the outstanding shares of a
company engaged in a "bank-related" business.
 
    Under the Act, as amended by the Riegle-Neal Act, USB may acquire banks
throughout the United States, subject only to state or federal deposit caps and
state minimum-age requirements. Effective June 1, 1997, the Riegle-Neal Act
authorized interstate branching by acquisition and consolidation in those states
that had not opted out by that date.
 
    National banks are subject to the supervision of, and are examined by, the
OCC. All subsidiary banks of USB are members of the FDIC, and as such, are
subject to examination thereby. In practice, the primary federal regulator makes
regular examinations of each subsidiary bank subject to its regulatory review or
participates in joint examinations with other federal regulators. Areas subject
to regulation by federal authorities include the allowance for credit losses,
investments, loans, mergers, issuance of securities, payment of dividends,
establishment of branches and other aspects of operations.
 
ADDITIONAL INFORMATION
 
    You may obtain financial and other information relating to U.S. Bancorp, its
directors and its executive officers, from its Annual Report on Form 10-K for
the Year Ended December 31, 1998. You may obtain a copy of this report as
indicated under "WHERE YOU CAN FIND MORE INFORMATION."
 
                       INFORMATION ABOUT BANK OF COMMERCE
 
GENERAL
 
    Bank of Commerce was incorporated under the laws of the State of California
on December 26, 1974. It was licensed by the California State Banking
Department, now the Department of Financial Institutions ("DFI") as a California
state-chartered bank on October 10, 1975 and commenced operations on October 13,
1975. BOC is authorized to issue 50,000,000 shares of BOC Common Stock, no par
value and 1,000,000 shares of preferred stock. As of December 31, 1998,
14,545,000 shares of BOC Common Stock were outstanding, and no shares of BOC
preferred stock were outstanding.
 
    BOC's administrative headquarters are located at 9918 Hibert Street, San
Diego, California. BOC's corporate office and headquarters is located at 600
West Broadway, Suite 100, in downtown San
 
                                       42
<PAGE>
Diego. BOC also has nine other full-service local banking offices and three loan
production offices located in Southern California, three loan production offices
located in Northern California and seventeen loan production offices outside of
California, operating under the name "Commerce Loan Company" in Las Vegas and
Reno, Nevada; Phoenix and Tucson, Arizona; Portland, Oregon; Seattle and
Spokane, Washington; Austin, Houston, Dallas and San Antonio, Texas; Salt Lake
City, Utah; Chicago, Illinois; Atlanta, Georgia; Boise, Idaho; and Denver,
Colorado. BOC also operates a loan production office in Albuquerque, New Mexico
under the name "Bank of Commerce". The primary purpose of the loan production
offices is to continue to foster sources outside San Diego County for loans made
under programs administered by the United States Small Business Administration
("SBA").
 
    BOC is engaged in substantially all of the business operations customarily
conducted by independent commercial banks in California, but with a special
emphasis on loans made under various small business loan guarantee programs
administered by the SBA. BOC makes SBA loans, commercial loans, real estate
loans, personal home improvement loans, automobile loans, other installment and
term loans, for business, personal and real estate construction purposes. BOC
offers financial, investment and management services, including checking, and
customized checking accounts and various types of interest-bearing deposit
accounts, and a business courier service for non-cash deposits (through third
parties). BOC does not operate or have any present intention to seek authority
to operate a trust department.
 
    BOC also issues cashiers' checks, sells travelers' checks, and provides safe
deposit boxes, collection and wire transfer services, drive-up facilities,
walk-up facilities and 24 hour automated teller machine banking services to its
customers. BOC provides 24-hour banking transaction services through electronic
Automated Teller Machines at a majority of its branch offices. This service is
enhanced regionally and nation-wide by BOC's membership in Instant Teller
Network-Registered Trademark-, Exchange System-Registered Trademark-, and Plus
ATM-Registered Trademark-.
 
    BOC derives the majority of its deposits from small to medium-sized
businesses, professionals, and household account holders in San Diego County.
Deposits are monitored to identify any concentrations of deposits from any one
customer or entity controlling one or more customers. At December 31, 1998, the
largest single depositor represented approximately 4.5% of total deposits.
 
    Due to local economic conditions and competition, the majority of the loans
made by BOC are not made in the communities from which BOC draws its deposits.
Thus, although BOC's non-SBA lending activities are conducted primarily in San
Diego County, its SBA lending activities, representing the bulk of its lending,
are in geographic areas outside of the San Diego County. In 1998, BOC's loan
production offices outside of San Diego County accounted for 89.8% of all SBA
loan originations.
 
    BOC holds no patents, registered trademarks, licenses other than those
licenses required to be obtained from appropriate bank regulatory agencies,
franchises or concessions. BOC has not engaged in any material research
activities relating to the development of new services.
 
ADDITIONAL INFORMATION
 
    You may obtain financial and other information relating to BOC, its
directors and its executive officers from its Annual Report on Form 10-K for the
Year ended December 31, 1998. You may obtain a copy of this report as indicated
under "WHERE YOU CAN FIND MORE INFORMATION."
 
                                       43
<PAGE>
             ELECTION OF DIRECTORS OF BANK OF COMMERCE (PROPOSAL 2)
 
    The BOC Bylaws provide for a Board of Directors of not fewer than six nor
more than eleven members. The exact number of directors may be fixed within
those limits either by the Board of Directors or the shareholders. The number is
presently fixed at nine. Directors are elected at each annual meeting to hold
office until the next annual meeting or until their successors have been duly
elected and qualified.
 
NOMINEES
 
    The Board of Directors has nominated the following nine people to stand for
election as directors. Votes will be cast by the proxies in such a way as to
elect as many of the nine as possible under the rules of cumulative voting. In
the event that a nominee is unable to serve, the proxies will be voted for the
election of a substitute nominee designated by the Board of Directors:
 
<TABLE>
<CAPTION>
                                                                                            DIRECTOR OF
NAME AND POSITION WITH BOC                                                        AGE        BOC SINCE
- ----------------------------------------------------------------------------      ---      -------------
<S>                                                                           <C>          <C>
Michael M. Bamber, Director                                                           61          1974
David H. Bartram, Senior Executive Vice President, Director                           42          1996
Nicole A. Clay, Vice Chairman of the Board, Director                                  53          1994
Albert Colucci (1), Director                                                          61          1998
Peter Q. Davis, Chairman of the Board, President, Chief Executive Officer,
  Director                                                                            59          1978
Lucy L. Killea, Director                                                              76          1996
Richard N. Krupp (2), Director                                                        68          1993
Susan Lew, Director                                                                   51          1994
John A. Rose, Director, Chairman Emeritus                                             79          1974
</TABLE>
 
- ------------
 
(1) Mr. Colucci served as a director of RVNB from 1982-1998 and joined the BOC
    board in May 1998 upon completion of acquisition of RVNB by BOC.
 
(2) Mr. Krupp was first elected to the Board of Directors in 1975, served until
    1978, and was re-elected in 1993.
 
    Below are brief summaries of the background and business experience during
at least the last five years, including principal occupation, for each of the
directors.
 
    MICHAEL M. BAMBER is the President of Bamber Electric, Inc. Mr. Bamber has
been an electrical contractor since 1962.
 
    DAVID H. BARTRAM was promoted to Senior Executive Vice President on January
25, 1996. From 1990 until his promotion he served as Executive Vice President of
BOC. He served as Senior Vice President of BOC from 1988 to 1990. He has been
with BOC since 1984.
 
    NICOLE A. CLAY has been a partner in Carpi & Clay, a government relations
firm, since March 1995. Ms. Clay served as Senior Vice President of the Public
Affairs Division of Stoorza, Ziegaus & Metzger, Inc., a public relations firm,
from 1986 until March 1995. She was elected Vice Chair of the Board effective
November 22, 1995.
 
    ALBERT COLUCCI is, and for more than five years has been, the President of
CBC Investment Company, a company engaged in land developments and investments.
 
    PETER Q. DAVIS has served as the President and Chief Executive Officer of
BOC since 1978. He was elected Chairman of the Board effective January 2, 1996.
Mr. Davis is also Chairman of the Center City Development Corporation.
 
                                       44
<PAGE>
    LUCY L. KILLEA is the President and Chief Executive Officer of the
International Community Foundation from 1996. From 1989 to November 30, 1996,
Ms. Killea served as a Member of the California State Senate. Prior to that
time, she served as a Member of the California State Assembly and the San Diego
City Council.
 
    RICHARD N. KRUPP is, and for more than five years, has been President of
Krupp Company, a property management business.
 
    SUSAN LEW is a Port Commissioner and is a past Chairperson of the San Diego
Unified Port District. Ms. Lew is also the President of S. Lew & Associates, a
real estate, business brokerage, consulting, and property management company
that she founded in 1978.
 
    JOHN A. ROSE is, and for the past five years has been, President of Rose
Automotive Services, Inc., a San Diego auto retailer. Mr. Rose is also
associated with several other business ventures involved in activities as
diverse as property investment and providing professional equipment for
policemen and firefighters. He served as Chairman of the Board from 1983 until
his appointment as Chairman Emeritus effective January 2, 1996.
 
EXECUTIVE OFFICERS
 
    The following contains information about Messrs. Cristofani, Ewin and Revier
who are executive officers of BOC but not directors:
 
<TABLE>
<CAPTION>
                                                                              YEAR FIRST APPOINTED
NAME AND POSITION WITH BOC                                            AGE       EXECUTIVE OFFICER
- -----------------------------------------------------------------  ---------  ---------------------
<S>                                                                <C>        <C>
Gary D. Cristofani, Executive Vice President, Chief Financial
  Officer                                                                 51             1994
Ernest W. Ewin, Senior Vice President                                     51             1998
Richard H. Revier, Executive Vice President                               46             1998
</TABLE>
 
    GARY D. CRISTOFANI has served as Executive Vice President of BOC since
December 1996, and has served as Chief Financial Officer of BOC since July 1994.
He served as Senior Vice President of BOC from July 1994 through December 1996.
 
    ERNEST EWIN has served as Senior Vice President since October 1998, and from
1997 to October 1998 had served as First Vice President. From 1994 to 1997, he
was a consultant to business and financial institutions.
 
    RICHARD H. REVIER has served as Executive Vice President since May 1998, and
from June 1996 to May 1998 served as Executive Vice President of RVNB.
 
SECURITIES OWNERSHIP OF EXECUTIVE OFFICERS, DIRECTORS AND OTHERS
 
    Except for those described in the following table, BOC is unaware of any
shareholder who is a beneficial owner of more than 5% of its issued and
outstanding common stock based upon its shareholder records as of the close of
business on March 31, 1999. The following table shows, as of that date, the
security ownership of its directors and executive officers, and of beneficial
owners of more than 5% of its common stock. None of these persons has any
commitments from BOC with
 
                                       45
<PAGE>
respect to the issuance of common stock except as to the issuance of common
stock upon the exercise of D Warrants and the stock options described below.
 
<TABLE>
<CAPTION>
                                                       AMOUNT AND NATURE OF
                                                       BENEFICIAL OWNERSHIP
                                                                OF               PERCENTAGE OF
NAME                                                     COMMON STOCK(1)        COMMON STOCK(2)
- ----------------------------------------------------  ----------------------  -------------------
<S>                                                   <C>                     <C>
Michael M. Bamber                                               146,873(3)              0.95
David H. Bartram                                                143,259(4)              0.93
Nicole A. Clay                                                  117,062(5)              0.76
Albert Colucci                                                  246,576(6)              1.60
Gary D. Cristofani                                               96,386(7)              0.63
Peter Q. Davis                                                  774,627(8)              4.94
Ernest W. Ewin                                                      470(9)                --
Lucy L. Killea                                                   10,304(10)             0.07
Richard N. Krupp                                                335,491(11)             2.18
Susan Lew                                                        64,236(12)             0.42
Richard H. Revier                                                10,885(13)             0.07
John A. Rose                                                  1,284,404(14)             8.35
Bank of Commerce Employee
  Stock Ownership Plan                                          681,029(15)             4.43
All executive officers and directors
  as a group (12 persons)                                     3,230,573(16)            20.77
J.P. Morgan & Co., Inc.                                         736,100                 4.43
</TABLE>
 
- ------------
 
(1) Unless otherwise indicated in footnotes to this table, each person listed
    has sole voting and investment power with respect to the shares listed.
    Shares listed include all shares beneficially owned, whether directly or
    indirectly, individually or together with associates plus shares issuable
    upon exercise of D Warrants or stock options that were exercisable on March
    31, 1999, or during the 60 days following that date.
 
(2) In calculating the percentage of common stock for each person, shares
    issuable upon exercise of D Warrants and stock options beneficially owned by
    the person were added to other shares beneficially owned by that person to
    form the numerator and were added to all shares outstanding on December 31,
    1998 to form the denominator.
 
(3) Includes 28,519 shares of Common Stock owned indirectly through the Employee
    Stock Purchase Plan and 690 shares issuable upon exercise of D Warrants.
 
(4) Includes 66,055 shares issuable upon exercise of stock options, 46,594
    shares owned indirectly through the Employee Stock Ownership Plan, and 7,512
    shares owned indirectly through the Employee Stock Purchase Plan.
 
(5) Includes 21,193 shares owned indirectly through the Employee Stock Purchase
    Plan and 33,485 shares issuable upon exercise of D Warrants owned indirectly
    through a pension plan.
 
(6) Includes 954 shares owned indirectly through the Employee Stock Purchase
    Plan.
 
(7) Includes 3,769 shares owned indirectly through the Employee Stock Ownership
    Plan, 33,332 shares issuable upon exercise of stock options, and 12,061
    shares owned indirectly through the Employee Stock Purchase Plan.
 
(8) Includes 87,044 shares owned indirectly through the Employee Stock Ownership
    Plan and 300,000 shares issuable upon exercise of stock options.
 
                                       46
<PAGE>
(9) Includes 456 shares owned indirectly through the Employee Stock Ownership
    Plan and 14 shares owned indirectly through the Employee Stock Purchase
    Plan.
 
(10) Includes 6,904 shares of Common Stock owned indirectly through the Employee
    Stock Purchase Plan.
 
(11) Includes 24,385 shares of Common Stock owned indirectly through the
    Employee Stock Purchase Plan, 15,000 shares owned indirectly through a
    family trust, and 5,000 shares issuable upon exercise of D Warrants owned
    indirectly through a second family trust.
 
(12) Includes 20,296 shares owned indirectly through the Employee Stock Purchase
    Plan and 12,080 shares issuable upon exercise of D Warrants.
 
(13) Includes 150 shares of owned indirectly through the Employee Stock
    Ownership Plan and 735 shares owned indirectly through the Employee Stock
    Purchase Plan.
 
(14) Includes 15,454 shares owned indirectly by a family member, 164,967 shares
    of Common Stock owned indirectly through an IRA, 398,484 shares owned
    indirectly through a controlled entity, 613,351 shares owned indirectly
    through a family trust, and 91,113 shares owned indirectly through the
    Employee Stock Purchase Plan.
 
(15) The Employee Stock Ownership Plan has a shared right to vote shares
    credited to a participant if the participant does not exercise his or her
    right to vote.
 
(16) Includes 574,887 shares issuable upon exercise of stock options, 213,686
    shares owned indirectly by directors and executive officers through the
    Employee Stock Purchase Plan, 138,013 shares owned indirectly by directors
    and executive officers through the Employee Stock Ownership Plan, and 52,290
    shares issuable upon exercise of D Warrants beneficially owned by directors
    and executive officers.
 
MEETINGS AND COMMITTEES
 
    The BOC Board of Directors had 12 regular meetings and one organizational
meeting in 1998. The BOC Board of Directors acts as the loan, nominating, and
compensation committees. The BOC Board of Directors has an audit committee
composed of three outside Directors each of whom owns or controls less than 10%
of common stock outstanding. The members of the audit committee are Michael M.
Bamber, Lucy L. Killea, Richard N. Krupp and Susan Lew. This committee reviews
reports of the internal auditor and the compliance officer of BOC regularly,
recommends annually to the BOC Board of Directors the engagement of an
independent auditing firm, reviews the scope and results of the audit with the
independent auditors and meets with the independent auditors quarterly. The
audit committee met 4 times in 1998.
 
            EXECUTIVE AND DIRECTOR COMPENSATION OF BANK OF COMMERCE
 
DIRECTOR REMUNERATION
 
    Each member of the BOC Board of Directors who is not also an executive
officer receives compensation of $2,000 per meeting for services as a Director.
Directors do not receive additional compensation for committee meetings.
 
    BOC Directors may elect to participate in the Stock Purchase Plan, described
in detail below. A Director may direct BOC to withhold up to 100% of director
fees, and BOC will make matching contributions of 100% of such withholdings. At
December 31, 1998, seven directors were participating
 
                                       47
<PAGE>
in the Stock Purchase Plan. For the fiscal year of 1998, BOC made the following
matching contributions to the accounts of these directors. See "Stock Purchase
Plan."
 
<TABLE>
<S>                 <C>
John A. Rose        $  24,000
Richard N. Krupp       24,000
Michael M. Bamber      24,000
Nicole A. Clay         24,000
Albert Colucci         12,000
Susan Lew              24,000
Lucy Killea            24,000
</TABLE>
 
    BOC Directors elected prior to July, 1996, were allocated, by virtue of
office and upon execution of a Participant Agreement with BOC, 15,000 Equity
Participation Units under the Equity Participation Plan, described in detail
below. See "Equity Participation Plan." At October 1, 1998, the vested Equity
Participation Units of all of the BOC Directors were paid out in cash to them as
follows.
 
<TABLE>
<S>                 <C>
John A. Rose        $ 206,250
Peter Q. Davis        206,250
David H. Bartram      206,250
Richard N. Krupp      206,250
Michael M. Bamber     206,250
Nicole A. Clay        206,250
Susan Lew             206,250
</TABLE>
 
EXECUTIVE COMPENSATION
 
    The following table sets forth the aggregate remuneration for services in
all capacities paid or accrued during the fiscal year ended December 31, 1998,
and, to the extent required by applicable rules, the preceding two years, to:
(i) the Chief Executive Officer and (ii) each other executive officer serving at
the end of 1998 whose total salary and bonus earned in 1998 exceeded $100,000.
This table does not include certain benefits that BOC believes do not in the
aggregate equal or exceed the lesser of $50,000 or ten percent of salary and
bonus reported for the named executive officer, and are described in "Certain
Other Compensation," below.
 
                                       48
<PAGE>
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                               LONG TERM COMPENSATION
                                                                         ----------------------------------
                                                                            AWARDS OF
                                             ANNUAL COMPENSATION            SECURITIES
                                      ---------------------------------     UNDERLYING
                                                               BONUS         OPTIONS/         ALL OTHER
                                        YEAR     SALARY($)     ($)(1)       SARS(2)(#)     COMPENSATION($)
                                      ---------  ----------  ----------  ----------------  ----------------
<S>                                   <C>        <C>         <C>         <C>               <C>
Peter Q. Davis                             1998  $  294,192  $  903,504             --/--    $    663,929(3)
  Chairman of the Board,                   1997     277,537     528,316        300,000/--         373,973(4)
  Chief Executive Officer                  1996     259,427     313,462             --/--          31,466(5)
  and President
 
David H. Bartram                           1998  $  208,416  $  451,801         50,000/--    $    312,035(6)
  Senior Executive                         1997     173,616     264,158             --/--          25,193(7)
  Vice President                           1996     160,537     159,768          --/2,500          16,774(8)
 
Gary D. Cristofani                         1998  $  121,620  $   68,500         25,000/--    $     31,834(9)
  Executive Vice President                 1997     114,732     160,875         12,500/--          23,345(10)
  Chief Financial Officer                  1996     109,244      25,000          2,500/--          12,526(11)
 
Richard H. Revier                          1998  $   93,750 12) $  119,733 13)        16,250/--   $     14,843(14)
  Executive Vice President                 1997      80,833 15)     26,748 16)            --/--          1,651(17)
                                           1996      75,000 18)      8,535 19)    13,068(20)/--          1,634(21)
 
Ernest W. Ewin                             1998  $   68,392  $   12,150          6,250/--    $      2,907(22)
  Senior Vice President                    1997      12,570          --         12,500/--              --
</TABLE>
 
- ------------
 
(1) Reflects bonuses related to years earned.
 
(2) Represents Equity Participation Units under the Equity Participation Plan.
 
(3) $3,333 represents BOC's contribution under its 401(k) plan; $2,046
    represents the premium paid by BOC for group term life insurance; $50,532
    represents the premium paid by BOC for life insurance obtained to fund
    obligations of BOC under the Salary Continuation Agreement, as defined
    below; $1,768 represents the amount expensed by BOC for its contribution to
    the ESOP; $206,250 represents the amount paid out for the EPP distribution;
    $400,000 represents the amount paid out for retention incentive.
 
(4) $3,167 represents BOC's contribution under its 401(k) plan; $1,560
    represents the premium paid by BOC for group term life insurance; $16,785
    represents the premium paid by BOC for life and disability insurance
    obtained to fund obligations of BOC under the Salary Continuation Agreement,
    as defined below; $2,477 represents the amount expensed by BOC for its
    contribution to the ESOP; $330,000 represents the amount paid out for
    retention incentive.
 
(5) $2,375 represents BOC's contribution under its 401(k) plan; $8,618
    represents BOC's contribution under the Stock Purchase Plan; $1,645
    represents the premium paid by BOC for group term life insurance; $16,078
    represents the premium paid by BOC for life and disability insurance
    obtained to fund obligations of BOC under the Salary Continuation Agreement,
    as defined below; $2,750 represents the amount expensed by BOC for its
    contribution to the ESOP.
 
(6) $3,333 represents BOC's contribution under its 401(k) plan; $92,777
    represents BOC's contribution under the Stock Purchase Plan; $1,787
    represents the premium paid by BOC for group term life insurance; $6,120
    represents the premium paid by BOC for life insurance obtained to fund
    obligations of BOC under the Executive Salary Continuation Agreement, as
    defined below; $1,768
 
                                       49
<PAGE>
    represents the amount expensed by BOC for its contribution to the ESOP;
    $206,250 represents the amount paid out for the Equity Participation Plan
    distribution.
 
(7) $2,800 represents BOC's contribution under its 401(k) plan; $1,017
    represents the premium paid by BOC for group term life insurance; $3,643
    represents the premium paid by BOC for life and disability insurance
    obtained to fund obligations of BOC under the Executive Salary Continuation
    Agreement, as defined below; $2,477 represents the amount expensed by BOC
    for its contribution to the ESOP, and $12,945 represents the amount of
    vacation payout.
 
(8) $2,100 represents BOC's contribution under its 401(k) plan; $4,806
    represents BOC's contribution under the Stock Purchase Plan; $1,164
    represents the premium paid by BOC for group term life insurance; $3,643
    represents the premium paid by BOC for life and disability insurance
    obtained to fund obligations of BOC under the Executive Salary Continuation
    Agreement, as defined below; $2,750 represents the amount expensed by BOC
    for its contribution to the ESOP.
 
(9) $2,400 represents BOC's contribution under its 401(k) plan; $26,480
    represents BOC's contribution under the Stock Purchase Plan; $1,186
    represents the premium paid by BOC for group term life insurance; $1,768
    represents the amount expensed by BOC for its contribution to the ESOP.
 
(10) $2,400 represents BOC's contribution under its 401(k) plan; $10,763
    represents BOC's contribution under the Stock Purchase Plan; $716 represents
    the premium paid by BOC for group term life insurance; $2,158 represents the
    amount expensed by BOC for its contribution to the ESOP; and $7,308
    represents the amount of vacation payout.
 
(11) $1,200 represents BOC's contribution under its 401(k) plan; $8,111
    represents BOC's contribution under the Stock Purchase Plan; $940 represents
    the premium paid by BOC for group term life insurance; $2,275 represents the
    amount expensed by BOC for its contribution to the ESOP.
 
(12) $61,875 represents the amount paid by BOC; $31,875 represents the amount
    paid by RVNB.
 
(13) $69,248 represents the amount paid by BOC; $50,485 represents the amount
    paid by RVNB.
 
(14) $1,910 represents BOC's contribution under its 401(k) plan; $10,882
    represents BOC's contribution under the Stock Purchase Plan; $650 represents
    the premium paid by BOC and $168 represents the premium paid by RVNB for
    group term life insurance; $1,233 represents the amount expensed by BOC for
    its contribution to the ESOP.
 
(15) $80,833 was paid by RVNB.
 
(16) $26,748 was paid by RVNB.
 
(17) $1,651 represents RVNB's contribution under its 401(k) plan.
 
(18) $75,000 was paid by RVNB.
 
(19) $8,535 was paid by RVNB.
 
(20) 13,068 options were granted by RVNB.
 
(21) $1,634 represents RVNB's contribution under its 401(k) plan.
 
(22) $1,200 represents BOC's contribution under its 401(k) plan; $300 represents
    BOC's contribution under the Stock Purchase Plan; $679 represents the
    premium paid by BOC for group term life insurance; $728 represents the
    amount expensed by BOC for its contribution to the ESOP.
 
    The following table presents certain information regarding grants of options
and Equity Participation Units (referred to as "SARS", below) to executive
officers of BOC during the fiscal year of 1998.
 
                                       50
<PAGE>
                     OPTION/SAR GRANTS IN FISCAL YEAR 1998
 
<TABLE>
<CAPTION>
                                                          INDIVIDUAL GRANTS
                                       -------------------------------------------------------
                                         NUMBER OF     % OF TOTAL
                                        SECURITIES    OPTIONS/SARS    EXERCISE
                                        UNDERLYING     GRANTED TO      OR BASE
                                       OPTIONS/SARS   EMPLOYEES IN      PRICE      EXPIRATION
                                        GRANTED(#)     FISCAL YEAR     ($/SH)         DATE
                                       -------------  -------------  -----------  ------------
<S>                                    <C>            <C>            <C>          <C>
Peter Q. Davis                                --/--         --/--          --/--         --/--
David H. Bartram                          50,000/--        12%/--    $  16.25/--     6/27/2008
Gary D. Cristofani                        25,000/--         6%/--    $  12.68/--    10/28/2008
Richard H. Revier                         16,250/--         3%/--    $  18.25/--     5/27/2008
Ernest W. Ewin                             6,250/--         1%/--    $  12.68/--    10/22/2008
</TABLE>
 
    The following table presents information on the number of unexercised
options and Equity Participation Units (referred to as SARs below) of the
executive officers and their values at December 31, 1998.
 
                       FISCAL YEAR-END OPTION/SAR VALUES
 
<TABLE>
<CAPTION>
                                           NUMBER OF SECURITIES
                                          UNDERLYING UNEXERCISED           VALUE OF UNEXERCISED IN-THE-MONEY
                                       OPTIONS/SARS AT YEAR-END(#)           OPTIONS/SARS AT YEAR-END($)(1)
                                     --------------------------------  ------------------------------------------
                                       EXERCISABLE     UNEXERCISABLE       EXERCISABLE          UNEXERCISABLE
                                     ---------------  ---------------  --------------------  --------------------
<S>                                  <C>              <C>              <C>                   <C>
Peter Q. Davis                         481,500/--          --/--         $2,842,127(2)/--           --/--
David H. Bartram                        66,055/--        44,445/--         $950,153/--           $222,061/--
Gary D. Cristofani                    29,166/35,000    45,834/15,000    $408,742/$282,450     $351,459/$121,050
Richard H. Revier                         --/--          16,250/--            --/--                --(2)/--
Ernest W. Ewin                            --/--          18,750/--            --/--               $72,313/--
</TABLE>
 
- ------------
 
(1) Values of unexercised options are based upon difference between exercise
    price and the $16.75 price of the last actual sale on December 31, 1998 (the
    "LAST TRADING PRICE"); values of unexercised SARs are based upon the
    difference between the Base Unit Value, as defined below, and the amount
    equal to (i) the sum of the Last Trading Price or cap value and the book
    value per share at December 31, 1998 which was $4.20 (ii) divided by two.
 
(2) Not-in-the-money options are not included.
 
    No shares were issued upon exercise of options by the executive officers
during the year ended December 31, 1998. However, the value of the Equity
Participation Units of Mr. Davis and Mr. Bartram were paid along with those held
by other BOC Directors on October 1, 1998. The following table presents the
number of Equity Participation Units redeemed and the aggregate dollar value
realized by Mr. Davis and Mr. Bartram during the year ended December 31, 1998.
 
                       SAR EXERCISES IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                                                        EQUITY
                                                                     PARTICIPATION    VALUE
                                                                       UNITS(#)    REALIZED($)
                                                                     ------------  -----------
<S>                                                                  <C>           <C>
Peter Q. Davis                                                            50,000    $ 206,250
David H. Bartram                                                          50,000    $ 206,250
</TABLE>
 
                                       51
<PAGE>
CHIEF EXECUTIVE OFFICER COMPENSATION AND BENEFITS AGREEMENT
 
    COMPENSATION AND BENEFITS AGREEMENT
 
    In 1996, BOC entered into a Chief Executive Officer Master Compensation and
Benefits Agreement (the "CEO COMPENSATION AND BENEFITS AGREEMENT") with Mr.
Davis. The CEO Compensation and Benefits Agreement replaced various
compensation-related agreements with Mr. Davis, and made a change in the Stock
Purchase Plan, described below, applicable only to Mr. Davis. The CEO
Compensation and Benefits Agreement was amended and restated in 1997 and further
amended in 1998, as described below. It is effective through December 31, 2000
unless extended by both Mr. Davis and the BOC Board of Directors.
 
    BASE SALARY AND BENEFITS
 
    Under the CEO Compensation and Benefits Agreement, Mr. Davis' base salary is
set for the period beginning on March 1, 1996 through December 31, 2000. For the
period from March 1, 1996 through December 31, 1996 his base salary was
$261,820. His annualized base salary rate was $277,529 for 1997, and $294,181
for 1998, and rises to $311,832 for 1999, and $330,541 for 2000.
 
    While he is employed by BOC, Mr. Davis is entitled to participate in all
employee benefit plans offered to employees of BOC, subject to the provisions of
the CEO Compensation and Benefits Agreement relating to the Stock Purchase Plan.
BOC provides him with an automobile and reimburses him for medical expenses
under the Executive Medical Reimbursement Plan, described below under "Certain
Other Compensation," and for expenses incurred on behalf of BOC. Mr. Davis is
also entitled to participate in any benefits offered to other executive officers
of BOC.
 
    ANNUAL BONUS
 
    For 1996, Mr. Davis was to be paid a bonus (the "INCOME BONUS") equal to
4%of the amount by which pre-tax income determined in accordance with GAAP, plus
the amount of accrued bonus, exceeds $1,170,000, subject to certain additional
restrictions. The amount of the Income Bonus is reduced by 20% for each of the
following criteria that are not met: (i) net income per common stock equivalent
increased from the prior year; (ii) net income increased from the prior year;
(iii) return on average equity ("ROE") is not less than ten percent lower than
the average ROE for BOC's California peer group; (iv) net loan charge-offs for
the year are 0.8% or less of total loans as of the beginning of the year; and
(v) BOC maintained a CAMEL 2 rating or better. In addition, Mr. Davis was to be
paid a bonus (the "SBA LOAN GROWTH BONUS") equal to 15 basis points times the
net increase, if any, of SBA Loans, based on a comparison of the amount of such
loans as of the end of 1995 and the amount of such loans as of the end of 1996.
Mr. Davis was paid a bonus calculated in accordance with these provisions in
1997, except that the BOC Board of Directors decided to change the calculation
of the SBA Loan Growth Bonus payable with respect to 1996, resulting in an
increase in the SBA Loan Growth Bonus of $9,800.
 
    For each of the years from 1997 through 2000 as to which Mr. Davis is
employed at the end of the year, he is to be paid the Income Bonus equal to 4%
of the amount by which income before taxes plus accrued bonus exceeds
$1,500,000, subject to certain additional restrictions. The amount of the Income
Bonus is reduced by 20% for each of the following criteria that are not met: (i)
the amount of SBA Loans at the end of that year increased by at least
$30,000,000 over the amount of SBA Loans at the end of the preceding year; (ii)
net income increased from the prior year by at least 10%; (iii) ROE is not less
than 10%; (iv) net loan charge-offs for the year are 1.0% or less of total loans
as of the beginning of the year; and (v) BOC maintained a CAMEL 2 rating or
better during the year. In addition, Mr. Davis is to be paid the SBA Loan Growth
Bonus equal to 15 basis points times the net increase, if any, of SBA Loans,
based on a comparison of the amount of such loans as of the end of that year and
the amount of such loans as of the end of the prior year. In 1998, the CEO
 
                                       52
<PAGE>
Compensation and Benefits Agreement was amended to delete from the calculation
of the Income Bonus the restrictions based on the amount of SBA Loans and
increase the effect of the other restrictions to 25% each, and to delete the SBA
Loan Growth Bonus.
 
    TERMINATION BENEFITS
 
    The CEO Compensation and Benefits Agreement provides that in the event that
Mr. Davis' employment with BOC is terminated by BOC at any time prior to his
attaining the age of sixty-five, other than as a result of his "disability," as
defined in the Salary Continuation Agreement (described below), death, the
conviction of a felony making the continuance of his employment detrimental to
BOC, or order of any government regulatory agency, or in the event of the
termination or material alteration of the Salary Continuation Plan ("SALARY
TERMINATION EVENTS"), Mr. Davis is entitled to receive $618,750 over a period of
60 months in equal monthly installments.
 
    1997 AMENDMENTS
 
    In 1997, BOC's Board of Directors worked with special counsel and
consultants to evaluate the impact of compensation arrangements of directors and
executive officers upon BOC. Among other things, the BOC Board of Directors
reviewed the structure of Mr. Davis' compensation arrangements, including his
severance pay, bonus on the sale of BOC, payments to him under the Equity
Participation Plan (discussed below), and salary continuation payments
(described below). See "REPORT OF BANK OF COMMERCE COMPENSATION COMMITTEE."
 
    Prior to the evaluation of these matters by the BOC Board of Directors, the
CEO Compensation and Benefits Agreement provided for the payment of a bonus to
Mr. Davis upon the occurrence of a transaction involving the exchange of cash
and/or securities for all of the outstanding stock of BOC (subject to
dissenters' rights, if any) (the "SALE OF BOC"). Mr. Davis would have received a
special bonus equal to $100,000, multiplied by each tenth in excess of 1.60
times the shareholders' equity of BOC, calculated as of the closing of the Sale
of BOC (the "SALE OF BOC BONUS"). In addition, if a Termination Event occurred
after a Sale of BOC, Mr. Davis would have received a lump sum equal to twice the
total salary and bonus compensation paid to him in the most recent complete
calendar year (the "TERMINATION LUMP SUM").
 
    Both the Sale of BOC Bonus and the Termination Lump Sum were eliminated. In
order to provide additional incentives to Mr. Davis, BOC agreed to provide
options to acquire 300,000 shares of BOC Common Stock, immediately vested, at
the fair market value of such shares ($18.62 per share). In recognition of Mr.
Davis' service to BOC, and to encourage his continued service to BOC, BOC agreed
to pay a retention incentive of $330,000 on or before December 19, 1997, and pay
additional annual retention amounts of $400,000 due December 1 of each of the
years 1998, 1999 and 2000. The latter payments would continue in the event of
death, disability or involuntary termination of employment (except for cause).
 
    BOC agreed to a new change of control payment (the "CHANGE OF CONTROL
PAYMENT"). The Change of Control Payment is equal to 2.99 times the "base
amount," as defined in Section 280G(b)(3)(A) of the Code. The "base amount"
generally refers to average compensation for the preceding five calendar years.
The term "AGREEMENT TO CHANGE CONTROL" is defined for purposes of the CEO
Compensation and Benefits Agreement to mean any agreement, method, or device
pursuant to which any individual or corporate person or group of persons would
acquire control of BOC, its assets and/or business operations by way of
purchase, merger, tender offer, exchange of shares or operating agreement,
except an agreement or plan of reorganization pursuant to which BOC creates a
one-bank holding company. "CONTROL" is defined as ownership or power to vote a
majority of the voting shares of BOC or ownership or power to control assets of
BOC with a value in excess of 50% of the book value of all assets of BOC.
 
                                       53
<PAGE>
    Mr. Davis is entitled to the Change of Control Payment upon consummation of
an Agreement to Change Control, in the event that he is employed under the CEO
Compensation and Benefits Agreement 30 days prior to the date an announcement is
made by press release or disclosure in a newspaper of general circulation in San
Diego, California of the transaction. Such announcement must include
announcement of: (i) the signing by BOC and the acquiring party, or its
principals, of a letter of intent or an agreement in principle, the object of
which is for BOC to enter into a definitive Agreement to Change Control of BOC,
(ii) the approval of an Agreement to Change Control by the Board of Directors of
BOC, or (iii) the signing by BOC and the acquiring party of a definitive
Agreement to Change Control (an "ACQUISITION ANNOUNCEMENT").
 
    Mr. Davis also agreed to waive director fees and matching contributions by
BOC under the Stock Purchase Plan.
 
CHIEF EXECUTIVE OFFICER SALARY CONTINUATION AGREEMENT
 
    In March 1991, BOC entered into a Salary Continuation Agreement with Mr.
Davis (the "SALARY CONTINUATION AGREEMENT"). The Salary Continuation Agreement
was entered into by BOC because Mr. Davis' experience, knowledge of the affairs
of BOC, and reputation and contacts in the industry are so valuable that
assurance of his continued service is essential for the future growth and
profits of BOC and it is in the best interests of BOC to arrange terms of
continued employment of Mr. Davis so as to reasonably assure his remaining in
BOC's employ during his lifetime or until the age of retirement. The Salary
Continuation Agreement provides for payments to Mr. Davis or his beneficiaries
upon the occurrence of various events, described in more detail below. BOC has
purchased insurance upon the life of Mr. Davis such that, if the actuarial
assumptions of such policy are correct, the payments to Mr. Davis under the
Salary Continuation Agreement may be funded from such policy.
 
    RETIREMENT
 
    In the event that Mr. Davis retires one month after his 65th birthday or
thereafter, BOC shall pay him the annual sum of $100,000, payable monthly on the
first day of each month following his retirement for a period of 180 months. If
Mr. Davis dies following his retirement but before receiving the full amount of
monthly payments, BOC will continue to make such monthly payments to his
designated beneficiary, or if none, to the duly qualified representative of his
estate. However, such beneficiary or representative shall have the absolute
right to elect to receive a lump sum payment from BOC in lieu of such monthly
payments in that sum which would be sufficient to fund an annuity issued by a
company rated A+ by A.M. Best and Company for the balance of payments. Any such
election must be made by written notice to BOC within 60 days of Mr. Davis'
death.
 
    DEATH PRIOR TO RETIREMENT
 
    In the event of Mr. Davis' death while employed by BOC, but prior to his
retirement, BOC shall pay his designated beneficiary, or if none, the duly
qualified representative of his estate, the annual sum of $100,000, payable
monthly beginning with the month after the month of his death for a period of
180 months. However, such beneficiary or representative shall have the absolute
right to elect to receive a lump sum payment from BOC in lieu of such monthly
payments in that sum which would be sufficient to fund an annuity issued by a
company rated A+ by A.M. Best and Company for the balance of payments. Any such
election must be made by written notice to BOC within 60 days of Mr. Davis'
death.
 
                                       54
<PAGE>
    VESTING OF BENEFITS PAYABLE UNDER OTHER CIRCUMSTANCES
 
    Another payment may be made to Mr. Davis by BOC under certain other
circumstances, described below. Such payment shall be made in the amounts
described below if the event triggering such payment occurs in the year
indicated:
 
<TABLE>
<CAPTION>
                        AMOUNT OF
         YEAR            PAYMENT
- ----------------------  ----------
<S>                     <C>
         1991           $   23,510
         1992               49,582
         1993               78,174
         1994              109,870
         1995              144,886
         1996              183,567
         1997              226,300
         1998              273,507
         1999              325,657
         2000              383,267
         2001              446,911
         2002              517,219
         2003              594,888
         2004              680,691
 2005 and thereafter       775,479
</TABLE>
 
    DISABILITY
 
    The term "DISABILITY" is defined for purposes of the Salary Continuation
Agreement, as the inability of Mr. Davis to substantially perform the usual and
regular duties performed by him as an employee of BOC. Whether Mr. Davis suffers
from a Disability is determined under procedures set forth in the Salary
Continuation Agreement by a physician selected or approved by a majority of
BOC's Board of Directors, or if Mr. Davis disagrees with the determination of
such physician, by a physician mutually acceptable to BOC and Mr. Davis, or if
they cannot agree, then by a physician chosen by one physician selected by Mr.
Davis and one physician selected by BOC.
 
    In the event that Mr. Davis, in the opinion of the physician selected or
appointed to make the determination of Disability, has and will continue to have
a Disability for some period, and the aggregate of one or more of the foregoing
periods of Disability, in such physician's opinion, are or will be 180 days or
more in any 360 day period while Mr. Davis is actively employed by BOC, but
prior to his retirement, Mr. Davis will be considered to be 100% vested in the
amount set forth above for the year in which such Disability first occurs. That
amount shall be paid to Mr. Davis in a lump sum within 60 days after the 180th
day of Disability.
 
    If Mr. Davis dies within 24 months after receipt of the lump sum payment,
BOC shall pay to his designated beneficiary or the duly qualified representative
of his estate a lump sum in an amount equal to the amount that would be payable
upon Mr. Davis' death prior to retirement upon the election of a designated
beneficiary or the duly qualified representative of his estate, as described
above, less the amount of the lump sum payment.
 
    OTHER TERMINATIONS
 
    Mr. Davis shall not receive any benefits or payments of any kind under the
Salary Continuation Agreement in the event that his employment is terminated for
"cause." For this purpose, "cause" means the direct responsibility of Mr. Davis
for management action, policies and/or procedures, or the lack of management
action, policies and/or procedures, which, in the opinion of a majority of BOC's
Board of directors, demonstrate(s) extreme dereliction of duty on the part of
Mr. Davis.
 
                                       55
<PAGE>
    In the event of Mr. Davis' voluntary termination of his employment with BOC,
or termination of his employment with BOC for reasons other than for "cause," he
will be considered to be 100% vested in the amount set forth above for the year
in which the termination occurs. Such amount shall be paid to Mr. Davis in a
lump sum within 60 days of the termination of his employment.
 
    In the event of an Acquisition Announcement Mr. Davis will be considered to
be 100% vested, subject to the consummation of the Agreement to Change Control
in question, in the amount set forth above for the year in which the Agreement
to Change Control is consummated. If the consummation of the Agreement to Change
Control occurs after Mr. Davis has been deemed to be vested in a certain amount
under the Salary Continuation Agreement and while he, his designated beneficiary
or the duly qualified representative of his estate is receiving monthly payments
pursuant to the terms of the Salary Continuation Agreement, BOC shall pay to
such party, in lieu of continuing such monthly payments, a lump sum payment
which would be sufficient to fund an annuity issued by a company rated A+ by
A.M. Best and Company for the balance of payments and payable on the terms of
the provisions of the Salary Continuation Agreement pursuant to which such
monthly payments are then being made. In either case, such lump sum payment
shall be paid by BOC on the date on which an agreement to Change Control is
consummated.
 
CEO DISABILITY POLICY
 
    Mr. Davis is insured under a Total and Residual Disability Income Policy for
which BOC pays the annual premium of $9,742 (the "CEO DISABILITY POLICY"). The
CEO Disability Policy provides for the payment of a monthly benefit to Mr. Davis
of $11,000 in the event he is totally disabled and cannot (i) perform the
substantial and regular work of his regular occupation and (ii) is under the
care of a physician for longer than 120 days. After the commencement of a
disability and while the payment of the monthly benefit continues, the monthly
benefit is increased annually by an amount equal to the consumer price index to
a maximum of 5%.
 
    For a residual disability (the reduction in income by at least 20% while
engaged in his regular occupation), the CEO Disability Policy pays a monthly
benefit of $11,000 times the percentage of monthly income (including salary,
wages, bonuses and earnings but not including deferred compensation or
retirement compensation) loss.
 
    For a partial disability (cannot work full-time or able to perform some but
not all material duties), the monthly benefit payable to Mr. Davis is 50% of
$11,000, unless his loss of income is greater than 50%, in which case the
monthly benefit for a residual disability is payable.
 
    The benefit period varies under the terms of the policy. For a total
disability starting before age 61 the policy pays a monthly benefit until age
65. The benefit period for disabilities commencing after age 61 gradually
decreases from 48 months for the onset of disability before age 62 down to 12
months for the onset of disability at or after age 75.
 
SENIOR EXECUTIVE VICE PRESIDENT AND EXECUTIVE VICE PRESIDENT EMPLOYMENT
  AGREEMENTS
 
    BOC entered into an employment agreement with Mr. Bartram as of November 22,
1989. Effective January 1, 1998, Mr. Bartram entered into a new employment
agreement and Mr. Cristofani entered into an employment agreement with BOC, and
on October 28, 1998 Mr. Revier entered into an employment agreement with BOC
(the "EMPLOYMENT AGREEMENTS"). Parts of these Employment Agreements contain
substantially identical terms, but certain terms of Mr. Bartram's Employment
Agreement are substantially different from those of Mr. Cristofani and Mr.
Revier. References in this discussion to the "Executive" refer to each of Mr.
Bartram and Mr. Cristofani, and Mr. Revier.
 
    The executive's annual compensation is to be set by the President and Chief
Executive Officer of BOC prior to January 1 of each year. Compensation is to be
composed of annual salary, bonus compensation and other benefits as the BOC
Compensation Committee (the "COMMITTEE") may in its discretion determine
("ANNUAL COMPENSATION"). Mr. Bartram's base salary rises 6% each year. The
 
                                       56
<PAGE>
current annual salaries of Messrs. Bartram, Cristofani and Revier are $220,920,
$123,960 and $100,000 per year, respectively. Mr. Bartram is entitled to an
Income Bonus equal to one-half the amount of such bonus for Mr. Davis each year.
When the CEO Compensation and Benefits Agreement was amended, equivalent
amendments were made to Mr. Bartram's Employment Agreement.
 
    In the event of an Acquisition Announcement followed by consummation of an
Agreement to Change Control, Mr. Bartram is entitled to a Change of Control
Payment calculated in the same manner as the payment is calculated for Mr.
Davis. However, Mr. Bartram's Change of Control Payment is reduced to the extent
this payment and other compensation together, is subject to the limitations of
Section 280G of the Code.
 
    On the other hand, with respect to each of Mr. Cristofani and Mr. Revier,
BOC must take one of two actions in the event of an Acquisition Announcement.
BOC may provide employment to him in San Diego County for a two year fixed term
of employment commencing on the date of such announcement at the executive's
then effective annual salary, and with amounts payable pursuant to bonus
formulae or plans, and other employee benefits, including without limitation,
medical insurance and BOC-provided automobiles, in effect at the date of such
announcement, provided that a bonus formula or plan may be changed so long as
the benefits provided are at least as generous as benefits payable under bonus
and incentive plans in effect as of the date of such announcement. In the
alternative, BOC may pay a lump sum payment equal to two times the executive's
Annual Compensation in effect at the date of the announcement. The amount of
compensation under each alternative, subject to the limitations Section 280G of
the Code, is reduced to the extent of other compensation subject to Section 280G
of the Code. If BOC does not select one of the alternatives within 180 days
after the announcement, the executive has the right to require payment of the
lump sum in full or that it be paid monthly, without interest thereon for a
period not to exceed 24 months. If the Agreement to Change Control is
subsequently terminated, canceled or rescinded prior to effecting a change of
control of BOC, the executive's rights to payment terminates, provided that if
BOC elected to provide a lump sum payment to the Executive he shall have the
right to either retain the funds paid or due or return such funds which are in
excess of the compensation the Executive would have received that year and
return to employment with BOC.
 
    In the event that BOC gives notice to the executive that he is terminated
without cause, prior to or within thirty days after such an Acquisition
Announcement, the notice of termination is void and of no further force or
effect. In the event employment of the executive is terminated for cause by BOC,
without cause by the executive, or without cause by BOC (where no such
announcement is made), the executive is entitled to annual salary computed pro
rata up to and including the date of termination and is entitled to no further
compensation or benefits, except that Mr. Bartram may still be entitled to his
Change of Control Payment. For purposes of the Employment Agreements,
termination for "cause" occurs only if (i) the executive is directly responsible
for management action, policies and/or procedures, or the lack of management
actions, policies and/or procedures which are of serious and substantial import,
detrimental and prejudicial to the best interest of BOC, and/or which
demonstrate extreme dereliction of duty on the part of the executive, or (ii)
action is taken by federal or state regulators, including without limitation an
order of removal, to remove the executive, or (iii) the executive dies or
becomes disabled such that he, in the determination of BOC's Board of Directors,
is unable to perform his duties under his Employment Agreement.
 
SENIOR EXECUTIVE VICE PRESIDENT SALARY CONTINUATION AGREEMENT
 
    In 1995, BOC entered into a Salary Continuation Agreement with Mr. Bartram
(the "EXECUTIVE SALARY CONTINUATION AGREEMENT"). The Executive Salary
Continuation Agreement is specifically intended to provide assurance of his
continued service during his lifetime or until the age of retirement. The
Executive Salary Continuation Agreement provides for payments to Mr. Bartram or
his beneficiaries upon the occurrence of various events, described in more
detail below. BOC has purchased insurance upon the life of Mr. Bartram such
that, if the actuarial assumptions of such policy
 
                                       57
<PAGE>
are correct, the payments to Mr. Bartram under the Executive Salary Continuation
Agreement may be funded from such policy.
 
    RETIREMENT
 
    In the event that Mr. Bartram retires one month after his 65th birthday or
thereafter, BOC shall pay him the annual sum of $40,900, increased by 3% for
each year between the date of the Executive Salary Continuation Agreement and
Mr. Bartram's normal retirement date, payable monthly on the first day of each
month following his retirement for a period of 180 months. If Mr. Bartram dies
following his retirement but before receiving the full amount of monthly
payments, BOC will continue to make such monthly payments to his designated
beneficiary, or if none, to the duly qualified representative of his estate.
However, such beneficiary or representative shall have the absolute right to
elect to receive a lump sum payment from BOC in lieu of such monthly payments in
that sum which would be sufficient to fund an annuity issued by a company rated
A+ by A.M. Best and Company for the balance of payments. Any such election must
be made by written notice to BOC within 60 days of Mr. Bartram's death.
 
    DEATH PRIOR TO RETIREMENT
 
    In the event of Mr. Bartram's death while employed by BOC, but prior to his
retirement, BOC shall pay his designated beneficiary, or if none, the duly
qualified representative of his estate, the annual sum of $85,636, payable
monthly beginning with the month after the month of his death for a period of
180 months. However, such beneficiary or representative shall have the absolute
right to elect to receive a lump sum payment from BOC in lieu of such monthly
payments in that sum which would be sufficient to fund an annuity issued by a
company rated A+ by A.M. Best and Company for the balance of payments. Any such
election must be made by written notice to BOC within 60 days of Mr. Bartram's
death.
 
                                       58
<PAGE>
    VESTING OF BENEFITS PAYABLE UNDER OTHER CIRCUMSTANCES
 
    Another payment may be made to Mr. Bartram by BOC under certain other
circumstances, described below. Such payment shall be made in the amounts
described below if the event triggering such payment occurs in the year
indicated:
 
<TABLE>
<CAPTION>
                        AMOUNT OF
         YEAR            PAYMENT
- ----------------------  ----------
<S>                     <C>
         1995           $    3,803
         1996                8,068
         1997               12,852
         1998               18,220
         1999               24,248
         2000               31,018
         2001               38,625
         2002               47,180
         2003               56,804
         2004               67,641
         2005               79,851
         2006               93,622
         2007              109,169
         2008              126,743
         2009              146,634
         2010              169,185
         2011              194,802
         2012              223,973
         2013              257,286
         2014              295,476
         2015              339,471
         2016              390,498
         2017              450,269
         2018              521,430
         2019              608,637
 2020 and thereafter       724,689
</TABLE>
 
    DISABILITY
 
    The term "EXECUTIVE DISABILITY" is defined for purposes of the Executive
Salary Continuation Agreement, as the inability of Mr. Bartram to substantially
perform the usual and regular duties performed by him as an employee of BOC.
Whether Mr. Bartram suffers from an Executive Disability is determined under
procedures set forth in the Executive Salary Continuation Agreement by a
physician selected or approved by a majority of the BOC Board of Directors, or
if Mr. Bartram disagrees with the determination of such physician, by a
physician mutually acceptable to BOC and Mr. Bartram, or if they cannot agree,
then by a physician chosen by one physician selected by Mr. Bartram and one
physician selected by BOC.
 
    In the event that Mr. Bartram, in the opinion of the physician selected or
appointed to make the determination of Executive Disability, has and will
continue to have an Executive Disability for some period, and the aggregate of
one or more of the foregoing periods of Disability, in such physician's opinion,
are or will be 180 days or more in any 360 day period while Mr. Bartram is
actively employed by BOC, but prior to his retirement, Mr. Bartram will be
considered to be 100% vested in the amount set forth above for the year in which
such Executive Disability first occurs. That amount shall be paid to Mr. Bartram
in a lump sum within 60 days after the 180th day of Executive Disability.
 
                                       59
<PAGE>
    If Mr. Bartram dies within 24 months after receipt of the lump sum payment,
BOC shall pay to his designated beneficiary or the duly qualified representative
of his estate a lump sum in an amount equal to the amount that would be payable
upon Mr. Bartram's death prior to retirement upon the election of a designated
beneficiary or the duly qualified representative of his estate, as described
above, less the amount of the lump sum payment.
 
    OTHER TERMINATIONS
 
    Mr. Bartram shall not receive any benefits or payments of any kind under the
Executive Salary Continuation Agreement in the event that his employment is
terminated for "cause." For this purpose, "cause" means the direct
responsibility of Mr. Bartram for management action, policies and/or procedures,
or the lack of management action, policies and/or procedures, which, in the
opinion of a majority of the BOC Board of Directors, demonstrate(s) extreme
dereliction of duty on the part of Mr. Bartram.
 
    In the event of Mr. Bartram's voluntary termination of his employment with
BOC, or termination of his employment with BOC for reasons other than for
"cause," he will be considered to be 100% vested in the amount set forth above
for the year in which the termination occurs. Such amount shall be paid to Mr.
Bartram in a lump sum within 60 days of the termination of his employment.
 
    In the event that an Acquisition Announcement is made, Mr. Bartram will be
considered to be 100% vested, subject to the consummation of the Agreement to
Change Control in question, in the amount set forth above for the year in which
the Agreement to Change Control is consummated. If the consummation of an
Agreement to Change Control occurs after Mr. Bartram has been deemed to be
vested in a certain amount under the Executive Salary Continuation Agreement and
while he, his designated beneficiary or the duly qualified representative of his
estate is receiving monthly payments pursuant to the terms of the Executive
Salary Continuation Agreement, BOC shall pay to such party, in lieu of
continuing such monthly payments, a lump sum payment which would be sufficient
to fund an annuity issued by a company rated A+ by A.M. Best and Company for the
balance of payments and payable on the terms of the provisions of the Executive
Salary Continuation Agreement pursuant to which such monthly payments are then
being made. In either case, such lump sum payment shall be paid by BOC on the
date on which an Agreement to Change Control is consummated.
 
SENIOR EXECUTIVE VICE PRESIDENT DISABILITY POLICY
 
    Mr. Bartram is insured under a Total and Residual Disability Income Policy
for which BOC pays the annual premium of $2,311 (the "DISABILITY POLICY"). The
Disability Policy provides for the payment of a monthly benefit to Mr. Bartram
of $4,900 in the event he is totally disabled and cannot (i) perform the
substantial and regular work of his regular occupation and (ii) is under the
care of a physician for longer than 120 days. After the commencement of a
disability and while the payment of the monthly benefit continues, the monthly
benefit is increased annually by an amount equal to the consumer price index to
a maximum of 5%.
 
    For a residual disability (the reduction in income by at least 20% while
engaged in his regular occupation), the Disability Policy pays a monthly benefit
of $4,900 times the percentage of monthly income (including salary, wages,
bonuses and earnings but not including deferred compensation or retirement
compensation) loss.
 
    For a partial disability (cannot work full-time or able to perform some but
not all material duties), the monthly benefit payable to Mr. Bartram is 50% of
$4,900, unless his loss of income is greater than 50%, in which case the monthly
benefit for a residual disability is payable.
 
    The benefit period varies under the terms of the policy. For a total
disability starting before age 61 the policy pays a monthly benefit until age
65. The benefit period for disabilities commencing after age 61 gradually
decreases from 48 months for the onset of disability before age 62 down to 12
months for the onset of disability at or after age 75.
 
                                       60
<PAGE>
STOCK PLANS
 
    BOC currently has one stock option plan, the 1989 Bank of Commerce Stock
Option Plan (the "1989 STOCK OPTION PLAN") and a stock plan which includes
provisions for the issuance of stock options, among other things, the Bank of
Commerce 1998 Stock Plan (the "BOC 1998 STOCK PLAN").
 
    The 1989 Stock Option Plan permits the issuance of options to purchase up to
1,500,000 shares of BOC Common Stock. At March 31, 1999, there were outstanding
options to purchase up to 906,731 shares of BOC Common Stock with an average
exercise price of $10.66 per share, of which options to purchase 511,157 shares
were vested with an average exercise price of $11.82 per share. As a result of
grants and exercises, 35 shares remain available for option grant.
 
    Both incentive stock options ("ISO'S"), as described in Section 422 of the
Code and "non-qualified" stock options ("NQO'S") may be granted under the 1989
Stock Option Plan. ISO's may only be granted to employees and directors who are
employees. NQO's may be granted to either employees or directors. As of March
31, 1999 only ISO's had been granted, except for NQO's to purchase 300,000
shares granted to Mr. Davis in 1997, exercisable at the fair market price on the
date of grant.
 
    The BOC 1998 Stock Plan provides for the issuance of shares under options,
grants or stock appreciation rights, up to 1,000,000 shares. At March 31, 1999,
there were outstanding options to purchase up to 352,300 shares of BOC Common
Stock with an average exercise price of $15.97 per share, of which options to
purchase 5,555 shares were vested with an average exercise price of $16.25 per
share. As a result of grants and exercises, 647,700 shares remain available for
option grant. As of March 31, 1999 only ISO's had been granted under the BOC
1998 Stock Plan.
 
    The BOC Board of Directors is proposing that the shareholders approve a
resolution increasing the number of shares available for grant under the BOC
1998 Stock Plan by 500,000 shares and that options granted under the BOC 1998
Stock Plan be amended. The BOC 1998 Stock Plan is described in more detail at
"AMENDMENT OF BOC 1998 STOCK PLAN TO PERMIT STOCK AWARDS TO BE ASSUMED BY USB IN
THE MERGER (PROPOSAL 3)."
 
EQUITY PARTICIPATION PLAN
 
    BOC's Board of Directors adopted the BOC Equity Participation Plan (the
"EQUITY PARTICIPATION PLAN") effective July 27, 1993. The purpose of the Equity
Participation Plan is to provide an additional incentive to certain senior
executive employees and directors of BOC to improve BOC's overall profitability
and value. The Equity Participation Plan seeks to accomplish this objective by
setting forth terms of special compensation payments to be generally determined
with respect to the future earnings and appreciation in the value of BOC.
However, no persons appointed or elected after July 23, 1996, to a position that
would otherwise make them eligible to receive an allocation under the Equity
Participation Plan, will be eligible for new or increased allocations.
 
    Participation in the Equity Participation Plan is automatic, upon execution
of a Participation Agreement with BOC, for each Director, the President, the
Chief Executive Officer, each Executive Vice President and each Senior Vice
President of BOC (each, a "PARTICIPANT"). Each Participant is allocated a number
of Equity Participation Units based upon the particular office held by the
Participant.
 
    Each Equity Participation Unit is assigned a "BASE UNIT VALUE" at the time
of allocation equal to the result obtained by dividing in two the sum of (i) the
book value per share of BOC Common Stock as of the end of the fiscal quarter
nearest the commencement date of the Participant's participation, and (ii) the
closing public trading price of the BOC Common Stock at the commencement of the
Participant's participation, but if the BOC Common Stock is not quoted on Nasdaq
or otherwise is not publicly traded, BOC's Board of Directors shall, in its
reasonable discretion, determine an appropriate substitute for the public
trading price for purposes of this calculation. A Participant is entitled to a
payment ("PARTICIPATION PAYMENT") upon the occurrence of certain events
("PARTICIPATION PAYMENT
 
                                       61
<PAGE>
EVENTS") determined with respect to the Base Unit Value per vested Equity
Participation Unit. To calculate the amount of the Participation Payment to be
made upon the occurrence of a Participation Payment Event, first, an amount is
calculated by dividing in two the sum of (i) the book value per share of BOC
Common Stock as of the date of the event entitling the Participant to a
Participation Payment, or if such book value cannot be reasonably determined on
such date, as of the end of the most recent fiscal quarter, and (ii) the closing
public trading price per share of BOC Common Stock on the date of such event,
or, if the Participation Payment Event is a Sale of BOC, as described below, the
selling price or amount realized per share of BOC Common Stock, net of all
reasonably related transactional expenses. From the amount so calculated, the
Base Unit Value is subtracted, and the remainder is the Participation Payment
per Equity Participation Unit.
 
    A Participation Payment Event occurs upon (i) termination (other than a
termination for cause) of a Participant's employment, (ii) a Participant's
death, (iii) partial redemption of Equity Participation Units while employed
upon a showing of hardship as approved by BOC's Board of Directors in its sole
discretion (a "HARDSHIP EVENT"), (iv) Sale of BOC, as described below, or (v)
termination of the Equity Participation Plan by BOC's Board of Directors. A Sale
of BOC is deemed to occur: (x) upon the closing date of the sale of all or
substantially all (I.E. more than 80%) of the operating assets of BOC; (y) the
sale or exchange of more than 50% of the outstanding shares of BOC Common Stock,
whether in a single transaction or a series of integrated transactions to one or
more persons or entities under common control; or (z) a merger or other
combination in which BOC is either not the surviving corporation or as a result
of such merger or other combination becomes a subsidiary of another entity. The
mere formation of a holding company by BOC or other form of internal
reorganization without a change in beneficial ownership of more than 50% of the
BOC Common Stock immediately before such reorganization shall not be deemed a
change of control.
 
    1997 AMENDMENTS
 
    In 1997, the BOC Board of Directors reviewed various issues relating to
director and executive officer compensation. One of the issues addressed during
this review was the continuing accrual of benefits under the Equity
Participation Plan. Because of the rise of the price of BOC Common Stock in
1997, additional obligations under the Equity Participation Plan accrued as a
result of that price rise. This was because BOC would have a monetary obligation
under the Equity Participation Plan in the event benefits are triggered,
calculated in part by reference to the trading price of BOC Common Stock.
 
    The result of this accounting treatment was that BOC was accruing increased
expenses, directly affecting the earnings of BOC. At the time the Equity
Participation Plan was adopted, such a scenario seemed relatively remote, given
the performance of stock prices for banking institutions. Ironically, as a
result of the strong performance of BOC Common Stock on the trading markets, and
the general rise in stock prices for shares of financial institutions, the
accruals increased significantly and if allowed to continue could have
eventually materially adversely affected BOC's earnings. In the view of the BOC
Board of Directors, this represented somewhat of a windfall for the participants
in the Equity Participation Plan because none of those participants ever
expected that the benefits provided to them would be so significant.
 
    In order to cut off the accrual of additional obligations under the Equity
Participation Plan, the BOC Board of Directors adopted certain changes to the
Equity Participation Plan and received the consent to modifications in the
Equity Participation Plan from each of the Participants. First, the total
maximum benefit provided was limited to $13.75 per Equity Participation Unit for
directors, and the difference between the lowest price at which BOC Common Stock
was publicly traded in 1997 and highest price that BOC Common Stock publicly
traded in 1997 for other participants. In addition, the earlier provisions for
the payment of interest over the 10-year payout were deleted. Vesting was
eliminated for directors, except upon a sale of BOC, death or permanent
disability.
 
                                       62
<PAGE>
    1998 DISTRIBUTIONS
 
    In 1998, the BOC Board of Directors determined to pay out the value of the
Equity Participation Plan Units to each member of the BOC Board of Directors. In
October 1998 the values of all of those Equity Participation Plan Units were
distributed to the Board Members. Beginning in 1999, the values of the vested
Equity Participation Units of non-directors are being paid over a ten year
period, without interest. See "EXECUTIVE AND DIRECTOR COMPENSATION OF BANK OF
COMMERCE-- DIRECTOR REMUNERATION."
 
STOCK PURCHASE PLAN
 
    The Stock Purchase Plan was revised and restated effective January 1, 1994.
The purpose of the Stock Purchase Plan is to enable participants to acquire a
proprietary interest in BOC through the ownership of BOC securities, thereby
encouraging closer identification of their interests with those of BOC by
providing them with a more direct stake in BOC's welfare.
 
    Any employee of BOC who has been employed continuously for 90 consecutive
days or more and each member of the BOC Board of Directors who has been a member
for a continuous period of 90 days or more is eligible to participate in the
Stock Purchase Plan. Participation is terminated in the event of termination of
employment or directorship, whichever is applicable, or upon death. The BOC
Board of Directors has the authority to impose such additional conditions upon
participation in the Stock Purchase Plan as it may deem from time to time to be
necessary or desirable to comply with applicable laws and regulations.
 
    Each employee participant may direct BOC to withhold up to 10% of the
employee's salary or wages. Each member of BOC's Board of Directors may direct
BOC to withhold up to 100% of the director's fees. The minimum withholding for
any participant is $20.00 per month. BOC makes matching contributions equal to
the withholding by each employee or director. BOC's contribution level may be
changed at any time by BOC's Board of Directors. Under the CEO Compensation and
Benefits Agreement, Mr. Davis and BOC have agreed that he will not participate
in the Stock Purchase Plan.
 
    All withholdings and contributions with respect to a particular participant
are maintained in a separate account for that participant held by the "Plan
Custodian," which is currently Merrill Lynch. Each participant's account is
fully vested, nonforfeitable and withdrawable by the participant at any time.
The accounts of the participants are invested by the Plan Custodian according to
the direction of the BOC Board of Directors, in securities previously issued by
BOC, by purchase on the public market. The Plan Custodian makes such purchases
in such amounts and at such times as it deems best for the participants as a
collective group. Cash dividends on securities are paid to the participants.
Each participant has the right to vote all shares allocated to that
participant's account. If a participant does not exercise this right, the Plan
Custodian is required to execute a proxy indicating "abstention" as to all
matters solicited therein.
 
    Upon termination of the employment or directorship of a participant in the
Stock Purchase Plan, the participant shall elect to either: (i) receive all cash
and securities held in the participant's account or (ii) offer all or a portion
of the shares in the participant's account for sale to the Stock Purchase Plan
and request that the proceeds from any shares purchased by the Stock Purchase
Plan plus other cash in the participant's account be distributed to the
participant. The Plan Custodian may elect not to accept an offer made under
alternative (ii) and in such case, distribution will be made under alternative
(i).
 
    BOC's Board of Directors is responsible for administering and interpreting
the Stock Purchase Plan and may delegate its duties to a committee of employees
appointed by the President. The President has appointed such a committee.
 
                                       63
<PAGE>
EMPLOYEE STOCK OWNERSHIP PLAN
 
    BOC first adopted an Employee Stock Ownership Plan in 1986, amended it from
time to time, and amended and restated this plan by adoption of the ESOP. The
purpose of the ESOP is to enable participating employees to share in the growth
and prosperity of BOC and to provide participants with an opportunity to
accumulate capital for their future economic security. The ESOP is also designed
to be available as a technique of corporate finance to BOC, which may be
facilitated, in particular, by receiving loans to finance the acquisition of
certain securities of BOC.
 
    At December 31, 1998, all of the 681,029 shares of BOC Common Stock held in
the ESOP had been allocated to the accounts of employees and officers, and of
those 622,358 shares had vested.
 
BANK OF COMMERCE 401(K) PLAN
 
    The 401(k) Plan is a defined contribution plan covering full-time and
part-time employees who elect to participate at the beginning of a calendar
quarter. BOC employees may participate in the 401(k) Plan by making deferrals of
their compensation. BOC may make discretionary contributions to the 401(k) Plan.
The 401(k) Plan is subject to the provisions of the Employee Retirement Income
Security Act of 1974.
 
CERTAIN OTHER COMPENSATION
 
    BOC provides each of its executive officers with an automobile. Personal use
of the automobile is reported by each as taxable income. Such noncash
compensation allocable to each executive officer does not exceed 10% of the cash
compensation of such executive officer and the aggregate of such compensation
does not exceed 10% of the aggregate cash compensation paid to executive
officers.
 
    BOC provides an Executive Medical Reimbursement Plan to its executive
officers. Mr. Davis is eligible for reimbursement of up to $15,000 of medical
expenses of his family per year. Mr. Bartram is eligible for reimbursement of up
to $10,000. Mr. Cristofani and Mr. Revier are eligible for reimbursement of up
to $5,000 of medical expenses of their respective families.
 
    Additionally, BOC pays for each executive officer's business expenses
incurred within and under the pursuit of their respective duties. Such expenses
may include travel, seminars, business entertainment, club memberships and other
expenses deemed appropriate in advancing the interests of BOC.
 
CERTAIN TRANSACTIONS
 
    BOC has had, and expects to have in the future, banking transactions
including the extension of credit in the ordinary course of its business with
directors, executive officers and principal shareholders, and with persons and
firms with which they are associated, on substantially the same terms, including
interest rates and collateral on loans, as those prevailing at the time for
comparable transactions with other persons and which do not involve more than
the normal risk of collectibility or present other unfavorable features. BOC had
no extension of credit to any of its directors and executive officers at
December 31, 1998. None of the directors or executive officers of BOC was
indebted to BOC in an amount in excess of $60,000 during 1998.
 
    From time to time after receiving competing bids and approval from the DFI,
BOC purchases automobiles for the use of its employees from Rose Automotive
Services, Inc., an automobile retail business wholly-owned by John A. Rose, a
director of BOC. For 1998, the total dollar volume of such transactions was
$78,696.
 
    BOC leases premises for its Vista office from Foothill Properties Inc., a
company owned 49.5% by Albert Colucci. The rent paid for 1998 by BOC was
$122,949 and $42,440 was paid by RVNB for a total of $165,389.
 
                                       64
<PAGE>
               REPORT OF BANK OF COMMERCE COMPENSATION COMMITTEE
 
    This Report of BOC's Compensation Committee shall not be deemed incorporated
by reference by any general statement incorporating by reference this Proxy
Statement/Prospectus into any filing under the Exchange Act except to the extent
that BOC specifically incorporates the information contained in the report by
reference, and shall not otherwise be deemed filed under the Exchange Act.
 
    The Committee is composed of Mr. Krupp, Mr. Rose, Ms. Lew and Ms. Killea.
BOC's Chief Executive Officer has the responsibility for setting the
compensation for the three other executive officers of BOC. The full Board of
Directors of BOC approves all contractual arrangements and compensation provided
to executive officers of BOC and grants stock options and other stock-based
compensation to the executive officers. It also adopts all compensation plans
applicable to employees of BOC generally. In 1997, BOC's full Board of Directors
was directly involved in evaluating and approving the changes in the Equity
Participation Plan, which affected all of the BOC executive officers, as
described in "EXECUTIVE AND DIRECTOR COMPENSATION OF BANK OF COMMERCE--Equity
Participation Plan" above. In 1998, BOC's full Board of Directors was directly
involved in the amendments to the CEO Compensation and Benefits Agreement and
the Employment Agreement with Mr. Bartram. See "EXECUTIVE AND DIRECTOR
COMPENSATION OF BANK OF COMMERCE--Chief Executive Officer Compensation and
Benefits Agreement."
 
COMPENSATION PHILOSOPHY
 
    The Committee and the BOC Board of Directors generally set executive officer
compensation so as to reward, retain and motivate the strong leadership
necessary to achieve superior short-term and long-term performance. Base salary
compensates the executive for performing his basic duties. Bonuses are designed
to reward favorable short term performance. Long term incentives, such as those
provided by stock options, the Stock Purchase Plan, the ESOP and, with respect
to Messrs. Davis and Bartram, their salary continuation agreements, reward
performance leading to sustained profitability and enhancements to shareholder
value.
 
SETTING COMPENSATION OF THE EXECUTIVE OFFICERS
 
    The compensatory arrangements of Mr. Davis and Mr. Bartram represent the
Committee's attempt to evaluate and reward the unique leadership and operational
skills these gentlemen bring to their positions. The Committee believes that the
compensation of these two executive officers should reward them for superior
performance of BOC, as reflected in its financial performance.
 
    In 1996 the Committee approved the CEO Compensation and Benefits Agreement
that replaced certain of Mr. Davis' prior compensation agreements. The CEO
Compensation and Benefits Agreement, as modified in 1997 and 1998, is designed
to give Mr. Davis the potential to receive compensation in excess of his base
salary if specific targets are met. See "EXECUTIVE AND DIRECTOR COMPENSATION OF
BANK OF COMMERCE--Chief Executive Officer Compensation and Benefits Agreement,"
above.
 
    The bonus arrangements under the CEO Compensation and Benefits Agreement
incentivize Mr. Davis to generate increased value for BOC shareholders. Because
of his importance to BOC, as its second ranking officer and manager of its key
SBA lending activities, Mr. Bartram receives annual bonuses calculated in the
same manner as those of Mr. Davis, but set at half the amounts. The following
discussion describes the rationale and structure of Mr. Davis' bonus
arrangements.
 
    The formula for the Income Bonus seeks to reward specific types of superior
performance of BOC's Chief Executive Officer, as measured by the performance of
BOC in categories deemed appropriate by the Committee. These categories are:
increased net income, profit per share, overall profit, overall satisfaction of
regulatory criteria, and low loan charge-offs. The Committee believes that
 
                                       65
<PAGE>
these are the key measures of the performance of BOC's Chief Executive Officer
and hopes to provide incentives for his continued superior performance through
these measures.
 
    The Income Bonus for 1998 through 2000 is equal to 4% of the amount by which
pre-tax income exceeds $1,500,000. However, the Income Bonus may be reduced if
certain events occur, none of which occurred in 1998. The events are as follows:
 
    (i) net income does not increase from the prior year by at least 10%;
 
    (ii) return on average equity is less than 10%;
 
   (iii) net loan charge-offs for the year are more than 1.0% of total loans as
         of the beginning of the year; and
 
    (iv) BOC does not maintain a CAMEL 2 rating or better.
 
    The services of Mr. Revier and Mr. Cristofani are, in the judgment of the
Committee, similar to those rendered by executives with similar positions at
other banks. For this reason, their compensation is set based in large part upon
BOC's Chief Executive Officer's evaluation of the appropriate compensation for
executives in such positions and the individual performance and contributions of
the executives.
 
1998 COMPENSATION MATTERS
 
    The compensation of all of BOC's executive officers in 1998 followed the
principles outlined above. However, in 1998 the full Board of Directors of BOC
approved amendments to the CEO Compensation and Benefits Agreement. That
agreement previously made the "Income Bonus" subject to diminution based on
failure to meet specific requirements for the growth of BOC's SBA loan portfolio
and awarded a separate "SBA Loan Growth Bonus" based on the growth of BOC's SBA
loan portfolio. See "EXECUTIVE AND DIRECTOR COMPENSATION OF BANK OF COMMERCE--
Chief Executive Officer Compensation an Benefits Agreement--Annual Bonus."
 
    The BOC Board of Directors determined in 1998 that the incentives tied to
SBA loan portfolio growth were no longer appropriate. For competitive and other
reasons, including the policy of the BOC Board of Directors of increasing SBA
loan sales, the BOC Board of Directors did not believe that causing its SBA loan
portfolio to grow should be rewarded. In fact, loan sales were beginning to
generate increasing portions of the revenue of BOC.
 
COMPENSATION COMMITTEE, INTERLOCKS AND INSIDER PARTICIPATION
 
    The members of the Committee, who submit the report rendered above their
name, are: Richard N. Krupp, John A. Rose, Susan Lew, and Lucy L. Killea. No
person on the Committee has served formerly as an executive officer of BOC.
 
RETURN TO SHAREHOLDERS PERFORMANCE GRAPH
 
    The following graph compares, for the period from December 31, 1993 through
December 31, 1998, the cumulative total shareholder return on BOC Common Stick
with (i) the cumulative total return of the S&P 500 market index, (ii) the
cumulative total return of the Nasdaq stock market-US index, and (iii) the
cumulative total return of the Nasdaq Banks Index. The graph assumes an initial
investment of $100 and reinvestment of dividends. The graph is not necessarily
indicative of future stock price performance.
 
                                       66
<PAGE>
                COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN
                        AMONG BANK OF COMMERCE, S&P 500,
                   NASDAQ STOCK MARKET-U.S. AND NASDAQ BANKS
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                    COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURN
<S>                                                                                   <C>            <C>            <C>
VALUE OF INVESTMENT
                                                                                          BOC STOCK      NASDAQ US       NASDAQ BANK
1993                                                                                       $100.000       $100.000          $100.000
1994                                                                                       $129.719        $97.752           $99.636
1995                                                                                       $141.408       $138.256          $148.383
1996                                                                                       $256.381       $170.015          $195.908
1997                                                                                     $1,311.179       $208.580          $328.018
1998                                                                                       $965.173       $293.209          $324.902
Assumes $100 investment on 12/31/93 in Bank of Commerce Common Stock, NASDAQ U.S.
Index and NASDAQ Bank Index. Values are as of December 31 of each year. Assumes that
all
dividends are re-invested.
</TABLE>
<TABLE>
<S>                          <C>        <C>          <C>
                                 TOTAL RETURN INDEX SUMMARY
 
<CAPTION>
           YEAR              BOC STOCK   NASDAQ US   NASDAQ BANK
<S>                          <C>        <C>          <C>
1993                           100.000     100.000      100.000
1994                           129.719      97.752       99.636
1995                           141.408     138.256      148.383
1996                           256.381     170.015      195.908
1997                         1,311.179     208.580      328.018
1998                           965.173     293.209      324.902
</TABLE>
 
COMPLIANCE WITH FILING REQUIREMENTS
 
    Section 16(a) of the Exchange Act requires that directors, executive
officers and beneficial owners of 10% or more of outstanding stock ("INSIDERS")
of banks with shares registered under the Exchange
 
                                       67
<PAGE>
Act, such as BOC, make filings with the Federal Reserve Board, reporting their
direct and indirect ownership and acquisition and disposition of shares of BOC
stock. The Federal Reserve Board has adopted rules implementing Section 16(a),
which largely incorporate those adopted by the SEC in 1991 (together, the
"REPORTING RULES"). The Reporting Rules are quite complex and interpretive
advice of the Federal Reserve Board and SEC concerning these rules is often
sought by registrants. The Reporting Rules require the registrant to disclose in
its proxy statement any instances of non-compliance by any Insiders of which it
has knowledge.
 
    BOC has a program in effect to assist its directors and executive officers
in complying with the Reporting Rules since its Common Stock became registered
under the Exchange Act in late 1995.
 
    During fiscal year 1998, Mr. Richard H. Revier, an Executive Vice President,
and Ms. Susan Lew, a director, made trades in BOC common stock that were not
reported on Form 4. Mr. Revier made thirteen trades which were reportable, and
not reported, on three Forms 4. Ms. Lew made one trade which was reportable, and
not reported, on one Form 4. Each reported his or her trades on a timely filed
Form 5.
 
    BOC believes that its compliance program will continue to keep unintentional
failures to comply with the Reporting Rules to a minimum, but expects that from
time to time there may be failures to comply because of the complexity of the
Reporting Rules.
 
    THE BOARD OF DIRECTORS RECOMMENDS THAT SHAREHOLDERS VOTE FOR THE ELECTION OF
ALL OF ITS NOMINEES FOR DIRECTOR.
 
                AMENDMENT OF BOC 1998 STOCK PLAN TO PERMIT STOCK
             AWARDS TO BE ASSUMED BY USB IN THE MERGER (PROPOSAL 3)
 
    The BOC 1998 Stock Plan was ratified and approved by the shareholders at the
BOC 1998 Annual Meeting. It has a section that provides for a change in vesting
terms of Stock Awards, as defined below, in the event of a Change of Control
(defined below). Under this provision, vesting under the existing Stock Awards,
as defined below, accelerate and become fully exercisable regardless of when
they would normally become fully vested and exercisable. However this provision
does not contemplate or permit the fully exercisable Stock Awards, to be assumed
by the surviving corporation in a merger such as that provided in the merger
agreement. The merger agreement contemplates that the Stock Awards, under the
plan will be assumed by USB. BOC shareholder approval is required to ratify an
amendment adopted by the BOC Board of Directors at its meeting on March 17,
1999. That amendment would permit the Stock Awards, as defined below, to
continue if they are assumed by a surviving party to a merger or consolidation
in which BOC is not a surviving party.
 
GENERAL
 
    The plan provides for the grant of incentive stock options to employees and
nonstatutory stock options, stock appreciation rights and stock bonuses to
employees, directors and consultants.
 
PURPOSE
 
    The plan provides a means by which selected employees and directors of, and
consultants to, BOC may be given an opportunity to purchase BOC Common Stock,
receive BOC Common Stock outright, or receive cash based on BOC Common Stock
appreciation. BOC, by means of the plan, seeks to retain the services of persons
who are now employees and directors of, or consultants to, BOC; to secure and
retain the services of new employees, directors and consultants; and to provide
incentives for such persons to exert maximum efforts for the success of BOC.
 
                                       68
<PAGE>
TYPES OF AWARDS
 
    The BOC 1998 Stock Plan provides for incentive stock options, nonstatutory
stock options, stock bonuses and stock appreciation rights (collectively "STOCK
AWARDS"). Stock appreciation rights authorized for issuance under the plan may
be tandem stock appreciation rights, concurrent stock appreciation rights or
independent stock appreciation rights. Tandem and concurrent stock appreciation
rights are subject to the same material terms and conditions of the particular
option grant to which they pertain. Independent stock appreciation rights are
granted independent of any option and are generally subject to the same terms
and conditions applicable to nonstatutory stock options.
 
ADMINISTRATION
 
    The Administrator of the plan (the "ADMINISTRATOR"), is the BOC Board of
Directors unless and until it delegates administration to a committee composed
of not fewer than two of its members. All of the members of any such committee
must be non-employee directors (unless the BOC Board of Directors expressly
declares that such requirement shall not apply) and may also be, in the
discretion of the BOC Board of Directors, outside directors. If administration
is delegated to a committee, that committee will have, in connection with the
administration of the plan, the powers possessed by the BOC Board of Directors,
subject, however, to such resolutions, not inconsistent with the provisions of
the plan, as may be adopted from time to time by the BOC Board of Directors.
 
SHARES SUBJECT TO THE PLAN
 
    As originally adopted, the maximum aggregate number of shares of common
stock that may be sold pursuant to awards under the plan could not exceed
1,000,000 shares. The purpose of this proposal is to increase that amount to
1,500,000 if the merger does not close. If any award expires or terminates, in
whole or in part, without having been exercised in full, or if any unvested
award is forfeited, the stock not purchased under such award will revert to and
again become available for issuance under the plan. The common stock subject to
the plan may be unissued shares or reacquired shares bought on the market or
otherwise.
 
ELIGIBILITY
 
    Incentive stock options and appurtenant stock appreciation rights may be
granted only to employees. Nonstatutory stock options, stock appreciation
rights, and stock bonuses may be granted to employees, directors or consultants.
As of March 31, 1999, BOC had 314 employees, 7 nonemployee directors and no
consultants eligible for awards under the plan.
 
    A person who owns more than 10% of the common stock at the time of grant is
eligible for incentive stock option benefits only if (i) the exercise price of
the shares subject to the grant is at least one hundred and ten percent (110%)
of the fair market value of the underlying common stock on the date it was
granted and (ii) the option has a term not longer than five (5) years from the
date it was granted.
 
TERM AND TERMINATION
 
    NO option is exercisable after the termination date provided at the time it
was granted (the "STATED TERMINATION DATE"). The Stated Termination Date cannot
be later than ten years after the date the option is granted. Options also
terminate before the Stated Termination Date (an early termination) on the date
an optionee ceases to hold the status of an employee, director, or consultant of
BOC. In the case of an early termination, the optionee's right to exercise the
option continues, as to the portion of the option that was exercisable on the
termination date, for a period of three months, but in no event to a date later
than the stated termination date.
 
                                       69
<PAGE>
    Under the 1998 Stock Plan, the Administrator may include two additional
provisions that would extend the option exercise period. One provision would
cover executive officers or directors subject to the provisions of Section 16(b)
of the Securities Exchange Act of 1934; the other covers optionees who suffer an
early termination as a result of death or disability of the optionee. If the
optionee could not exercise the option during the three-month period normally
provided without incurring liability to under Section 16(b), the option may
provide that the option exercise period will extend to the end of a three-month
period during which the optionee could have exercised such rights without
incurring such liability, but in no event to a date later than the Stated
Termination Date. In the case of an optionee whose early termination date occurs
as a result of the optionee's death or disability, the option may provide that
the option exercise period will extend for a period of 12 months past the early
termination date, but in no event beyond the Stated Termination Date, and that
during the extension period the option may be exercised by the optionee, or the
optionee's estate, heirs, or beneficiaries.
 
    In the event of an early termination of an option, BOC may purchase from the
optionee any or all of the option that was exercisable on the early termination
date.
 
EXERCISE PRICE
 
    The exercise price of each incentive stock option will not be less than one
hundred percent (100%) of the fair market value of BOC common stock on the date
of granting the option. The exercise price of each nonstatutory stock option
will not be less than eight-five percent (85%) of the fair market value of
common stock on the date of granting the option. Stock bonuses may be awarded in
consideration for past services rendered to BOC or for its benefit.
 
CONSIDERATION
 
    The purchase price of stock acquired pursuant to a Stock Award is paid
either in cash at the time of exercise or purchase or (if provided by the
Administrator at the time of grant) by deferred payment or other arrangement, or
in any other form of legal consideration that may be acceptable to the
Administrator. Additionally, in the case of an option, if provided by the
Administrator at the time of the grant, consideration may be paid by delivery to
BOC of other BOC Common Stock. In the case of any deferred payment arrangement,
interest will be payable at least annually and will be charged at the minimum
rate of interest necessary to avoid the treatment of it as interest of amounts
that are not stated to be interest.
 
TRANSFERABILITY
 
    An incentive stock option is not transferable except by will or by the laws
of descent and distribution, and is exercisable during the lifetime of the
person to whom the incentive stock option is granted only by such person. A
nonstatutory stock option or stock bonus shall only be transferable upon such
terms and conditions as the Administrator shall determine in its sole discretion
at the time of grant. An optionee may designate a beneficiary who may exercise
his or her option after death.
 
VESTING
 
    The total number of shares of stock subject to an option may, but need not,
be allotted in periodic installments. The option agreement may provide that from
time to time during each of such installment periods, the option may become
exercisable or vested with respect to some or all of the shares allotted to that
period. The option agreement may also provide that an optionee can exercise an
option as to shares prior to the time the option is vested. An option agreement
with this provision will also contain a provision regarding shares purchased
before they are vested, which provides that if the optionee loses the required
status before vesting occurs, BOC will have the right to repurchase those
shares.
 
                                       70
<PAGE>
    Stock bonuses granted under the plan may be granted subject to a repurchase
right in favor of BOC with the repurchase right expiring in accordance with a
schedule determined by the Administrator.
 
ADJUSTMENTS UPON CHANGE IN STOCK
 
    If any change is made in the BOC Common Stock, without receipt of
consideration by BOC the class(es) and maximum number of shares subject to the
plan and the class(es) and number of shares and price per share of stock subject
to outstanding Stock Awards will be appropriately adjusted.
 
    In the event of a "1998 Change in Control" (defined below), the vesting of
outstanding Stock Awards accelerates and the grantees will have the right to
exercise all outstanding Stock Awards, including shares as to which the Stock
Award would not otherwise be exercisable or vested. In the event of a 1998
Change in Control (defined below), the Administrator will notify all
participants. The outstanding Stock Awards will be fully exercisable. If
Proposal 3 is not adopted, the Stock Awards will then terminate after a period
of three (3) months (or such other period of time not exceeding six (6) months
as is determined by the Administrator at the time of the grant) from the date of
the Administrator's notice of 1998 Change in Control (defined below), and any
unexercised options will terminate upon the expiration of such period. If
Proposal 3 is approved and the surviving company in a merger or consolidation
agrees to assume them (as USB has agreed to do in the merger agreement), the
unexercised options will not terminate but will continue fully vested and
otherwise substantially in accordance with their original terms.
 
    For purposes of the BOC 1998 Stock Plan, "1998 CHANGE IN CONTROL" means:
 
    (1) the acquisition of 50% or more of the outstanding voting stock of BOC by
       any person or entity, with certain exceptions for employee benefit plans
       of BOC;
 
    (2) the acquisition of 25% or more of the outstanding voting stock of BOC by
       any person or entity and a change in the composition of BOC's Board of
       Directors during the following 12 months such that those persons serving
       as directors immediately prior to the share acquisition, cease to make up
       at least 60% of the directors of BOC;
 
    (3) a merger or consolidation of BOC with any other corporation, other than
       a merger or consolidation in which the shareholders of BOC immediately
       prior thereto continue to own more than 50% of the outstanding voting
       stock of BOC; or
 
    (4) the complete liquidation of BOC, or disposition of all or substantially
       all of BOC's assets.
 
    The Agreement constitutes a 1998 Change in Control for purposes of the BOC
1998 Stock Plan.
 
AMENDMENT
 
    The Administrator at any time, and from time to time, may amend the plan.
However, no amendment shall be effective unless approved by the shareholders of
BOC if shareholder approval is required in order for the plan to satisfy the
requirements of Section 422 of the Code, or to comply with the requirements of
SEC Rule 16b-3 or Nasdaq National Market listing requirements. The Administrator
may in its sole discretion submit any amendment to the plan to BOC shareholder
for approval.
 
TERMINATION OR SUSPENSION
 
    The Administrator may suspend or terminate the BOC 1998 Stock Plan at any
time. Unless sooner terminated, the BOC 1998 Stock Plan will terminate on March
25, 2008. No Stock Awards may be granted under the BOC 1998 Stock Plan while
that plan is suspended or after it is terminated.
 
                                       71
<PAGE>
FEDERAL INCOME TAX INFORMATION
 
    INCENTIVE STOCK OPTIONS
 
    Incentive stock options under the plan are intended to be eligible for the
favorable federal income tax treatment accorded "incentive stock options" under
the Internal Revenue Code.
 
    There generally are no federal income tax consequences to the optionee or
BOC by reason of the grant or exercise of an incentive stock option. However,
the exercise of an incentive stock option may increase the optionee's
alternative minimum tax liability, if any.
 
    If an optionee holds stock acquired through exercise of an incentive stock
option for at least two years from the date on which the option is granted and
at least one year from the date on which the shares are transferred to the
optionee upon exercise of the option, any gain or loss on a disposition of such
stock will be long-term capital gain or loss. Generally, if the optionee
disposes of the stock before the expiration of either of these holding periods
(a "DISQUALIFYING DISPOSITION"), at the time of disposition, the optionee will
realize taxable ordinary income equal to the lesser of (a) the excess of the
stock's fair market value on the date of exercise over the exercise price, or
(b) the optionee's actual gain, if any, on the purchase and sale. The optionee's
additional gain, or any loss, upon the Disqualifying Disposition will be a
capital gain or loss.
 
    Capital gains currently are subject to lower tax rates than ordinary income.
The maximum capital gains rate for federal income tax purposes is currently 20%
for property held more than 12 months, while the maximum statutory ordinary
income rate is 39.6% at the present time. Slightly different rules may apply to
optionees who acquire stock subject to certain repurchase options.
 
    To the extent the optionee recognizes ordinary income by reason of a
Disqualifying Disposition, BOC will generally be entitled (subject to the
requirement of reasonableness and the satisfaction of a tax reporting
obligation) to a corresponding business expense deduction in the tax year in
which the Disqualifying Disposition occurs.
 
    NONSTATUTORY STOCK OPTIONS
 
    Nonstatutory stock options granted under the plan generally have the
following federal income tax consequences:
 
    There are no tax consequences to the optionee or BOC by reason of the grant
of a nonstatutory stock option. Upon exercise of a nonstatutory stock option,
the optionee normally will recognize taxable ordinary income equal to the excess
of the stock's fair market value on the date of exercise over the option
exercise price. Generally, with respect to employees, BOC is required to
withhold taxes from regular wages or supplemental wage payments in an amount
based on the ordinary income recognized. Subject to the requirement of
reasonableness and the satisfaction of a reporting obligation, BOC will
generally be entitled to a business expense deduction equal to the taxable
ordinary income realized by the optionee.
 
    Upon disposition of the stock, the optionee will recognize a capital gain or
loss equal to the difference between the selling price and the purchase price
(to the extent not recognized as taxable income as described above). Slightly
different rules may apply to optionees who acquire stock subject to certain
repurchase options or who are subject to Section 16(b) of the Exchange Act.
 
    STOCK BONUS AWARDS
 
    A recipient who receives restricted stock pursuant to a Stock Bonus Award
will recognize ordinary income equal to the fair market value of the stock at
the time or times the restrictions lapse (unless a Code Section 83(b) election
is timely filed at the time of grant). Different rules may apply if the
 
                                       72
<PAGE>
recipient is subject to Section 16(b) of the Exchange Act. Generally, BOC will
be entitled to a tax deduction in the amount and at the time the recipient
recognizes ordinary income.
 
VOTE REQUIRED
 
    Approval of Proposal 3 requires the affirmative vote of a majority of the
votes cast.
 
THE BOARD OF DIRECTORS RECOMMENDS YOU VOTE FOR PROPOSAL 3.
 
                AMENDMENT OF BOC 1998 STOCK PLAN TO INCREASE THE
         NUMBER OF AGGREGATE SHARES AVAILABLE TO 1,500,000 (PROPOSAL 4)
 
    On March 17, 1999, the BOC Board of Directors reviewed the status of grants
of Stock Awards under the 1998 Stock Plan and determined that the number of
shares remaining might not be sufficient to support stock award incentive
programs until the next annual meeting of shareholders. The BOC Board of
Directors voted to seek shareholder approval to increase the shares of BOC
common stock available under the plan from 1,000,000 shares to 1,500,000 shares
if the proposed Merger does not occur.
 
    The BOC 1998 Stock Plan provides a means by which selected employees and
directors of, and consultants to, BOC may be given an opportunity to purchase
BOC common stock outright, or receive cash based on appreciation of such stock.
BOC, by means of this plan, seeks to retain the services of persons who are now
employees and directors of, or consultants to, BOC; to secure and retain the
services of new employees, directors and consultants; and to provide incentives
for such persons to exert maximum efforts for the success of BOC. The BOC Board
of Directors has proposed to increase the shares available under the plan
because it is concerned that if the Merger is not approved, the shares remaining
available for grant under this plan (647,700 shares) and the 1989 Stock Option
Plan (35 shares) may be exhausted by grants that the BOC Board of Directors may
feel are necessary before additional shares could be added to the plan at the
2000 annual meeting of BOC shareholders.
 
VOTE REQUIRED
 
    Approval of Proposal 4 requires the affirmative vote of a majority of the
votes cast.
 
THE BOARD OF DIRECTORS RECOMMENDS YOU VOTE FOR PROPOSAL 4.
 
                      DESCRIPTION OF USB CAPITAL STOCK AND
                        COMPARISON OF SHAREHOLDER RIGHTS
 
    As a result of the conversion of shares of BOC Common Stock to shares of USB
Common Stock in the Merger, BOC Shareholders will become USB Stockholders, and
their rights will be governed by the Delaware General Corporation Law ("DGCL")
and by the USB Certificate and the USB Bylaws, which differ in certain respects
from the California General Corporate Law ("CGCL") and the BOC Articles and the
BOC Bylaws. The following is a description of USB's capital stock, including the
USB Common Stock to be issued in the Merger, and a summary of the material
differences between the rights of BOC Shareholders and USB Stockholders.
Although it is impractical to compare all of the aspects in which the DGCL and
the CGCL and the companies' governing instruments differ with respect to
stockholders' rights, the following discussion summarizes the material
significant differences between them.
 
                                       73
<PAGE>
DESCRIPTION OF USB CAPITAL STOCK
 
    The following description of the capital stock of USB does not purport to be
complete and is subject, in all respects, to applicable Delaware law and to the
provisions of the USB Certificate. The following description is qualified by
reference to the USB Certificate, and the certificate of designation for each
series of preferred stock of USB.
 
    GENERAL
 
    The authorized capital stock of USB consists of 1,500,000,000 shares of USB
Common Stock, par value $1.25 per share, and 50,000,000 shares of preferred
stock, par value $1.00 per share. Unless action is required by applicable laws
or regulations, USB's Board of Directors has the power to adopt resolutions that
(1) provide for the issuance of preferred stock in one or more series and (2)
fix or limit the voting rights, designations, preferences, and relative,
participating, optional or other special rights of such stock. This power is
limited by applicable laws or regulations and may be delegated to a committee of
USB's Board of Directors.
 
    As of March 1, 1999, 744,797,857 shares of USB Common Stock were issued
(including 18,758,495 share held in treasury), 60,419,137 shares were reserved
for issuance under USB's employee and director plans and USB's dividend
reinvestment plan, 89,873 shares were reserved for issuance under outstanding
warrants to purchase USB Common Stock and 45,000,000 shares were reserved for
issuance upon exercise of the Periodic Stock Purchase Rights and Risk Event
Warrants described below. As of the Record Date, there were 56,586 shares of
preferred stock of USB outstanding and 12,750 shares of preferred stock of USB
reserved for issuance.
 
    PREFERRED STOCK
 
    USB presently has one series of preferred stock issued and outstanding and
one series of preferred stock authorized for future issuance. As of the Record
Date, USB had 56,586 shares of USB's Term Participating Preferred Stock (the
"TERM PARTICIPATING PREFERRED STOCK") and 12,750 shares of its Series 1990A
Preferred Stock reserved for issuance.
 
    TERM PARTICIPATING PREFERRED STOCK
 
    GENERAL.  USB has established a series of preferred stock, par value $1.00
per share, designated as the "Term Participating Preferred Stock." USB issued
such shares solely as employment compensation to employees of Libra Investments,
Inc. (or the high-yield division of any successor to Libra Investments, Inc.
that is a direct or indirect subsidiary of USB), which USB recently acquired.
Holders of Term Participating Preferred Stock will possess rights to receive
Common Stock pursuant to a Rights Agreement, dated as of January 4, 1999,
between USB and U.S. Bank National Association, as Rights Agent.
 
    The number of shares of Term Participating Preferred Stock will initially be
approximately 100,000. USB's Board of Directors may increase or decrease the
number of shares, but not below the number then outstanding. Any shares
transferred to USB will be available for reissuance as shares of this series.
 
    TERM.  The shares of Term Participating Preferred Stock will remain until
December 31, 2003, or the Early Termination Date, as defined in the Rights
Agreement (the "TERM DATE"), unless earlier purchased by USB. From the Term
Date, (1) each share of Term Participating Preferred Stock will represent only
the right to receive the number of shares of Common Stock to which the holder of
the attached Right would be entitled, assuming that such Right is validly
exercised or deemed exercised and (2) the holders of the Term Participating
Preferred Stock will have no other rights or claims against USB.
 
    DIVIDENDS.  USB's Board of Directors may declare dividends on the Term
Participating Preferred Stock, out of funds legally available therefor, on date
occurring prior to the Term Date that dividends
 
                                       74
<PAGE>
or other distributions (except those payable in Common Stock) are payable on or
in respect of Common Stock and in an amount per share equal to the aggregate
amount of dividends or other distributions (except those payable in Common
Stock) that would be payable on such date to a holder of the Reference Package
(as defined below). Dividends on each share will cumulate from the date such
share is originally issued.
 
    However, any such share originally issued after a dividend record date and
on or prior to the dividend payment date to which such record date relates will
not be entitled to receive the dividend payable on such dividend payment date.
Holders of shares will not be entitled to any dividends, whether payable in
cash, property or stock, in excess of full cumulative dividends.
 
    The term "REFERENCE PACKAGE" initially means ten shares of the Common Stock
of USB. If USB, at any time after the close of business on the date of initial
issuance of the Term Participating Preferred Stock, (1) declares or pays a
dividend on any Common Stock payable in Common Stock, (2) subdivides (by any
split, recapitalization or otherwise), any Common Stock or (3) combines any
Common Stock into a smaller number of shares, then the Reference Package after
such event shall be the Common Stock that a holder of the Reference Package
immediately prior to such event would hold thereafter as a result thereof.
 
    While any shares of Term Participating Preferred Stock are outstanding, USB
must first pay the full cumulative dividends (including the dividend to be due
upon payment of such dividend, distribution, redemption, purchase or other
acquisition) on all such outstanding shares if USB (1) declares a dividend upon
the Common Stock or upon any other stock ranking junior to the Term
Participating Preferred Stock as to dividends or upon liquidation (except for
dividends in such stock), or (2) acquires for any consideration (or pays or
makes available any money for a sinking fund for the redemption of any shares of
any such stock) any Common Stock or any other stock of USB ranking junior to or
on a parity with the Term Participating Preferred Stock as to dividends or upon
liquidation (except by conversion into or exchange for such stock).
 
    MERGER, ETC.  If there is a transaction prior to the Term Date in which the
shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then each share of Term
Participating Preferred Stock shall at the same time be similarly exchanged or
changed in an amount equal to the aggregate amount of stock, securities, cash
and/or any other property (payable in kind), as the case may be, that a holder
of the Reference Package would be entitled to receive as a result of such
transaction.
 
    LIQUIDATION PREFERENCE.  If USB is liquidated prior to the Term Date, the
holders of shares of Term Participating Preferred Stock will be entitled to
receive an amount per share equal to the aggregate amount distributed or to be
distributed prior to such date in connection with such liquidation to a holder
of the Reference Package. This payment will be made before any distribution or
payment is made to the holders of Common Stock or of any other stock of USB
ranking junior to the Term Participating Preferred Stock upon liquidation. This
payment also includes accrued dividends to such distribution or payment date,
whether or not earned or declared. If such payment is made in full to all
holders, or on or following the occurrence of the Term Date, the holders as such
will have no right or claim to any of the remaining assets of USB.
 
    If the assets of USB available for distribution to the holders of shares of
Term Participating Preferred Stock upon any liquidation of USB are insufficient
to pay all amounts to which such holders are entitled pursuant to the preceding
paragraph, no such distribution will be made on account of any shares of any
other class or series of Preferred Stock ranking on a parity with the Term
Participating Preferred Stock. However, USB may pay proportionate distributive
amounts on account of the shares of Term Participating Preferred Stock, ratably
in proportion to the full distributable amounts for which holders of all such
parity shares are respectively entitled upon such liquidation. Upon the
liquidation of USB, the holders of shares of Term Participating Preferred Stock
then outstanding will be entitled to be paid out of assets of USB available for
distribution to its stockholders all amounts to which such
 
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holders are entitled pursuant to the preceding paragraph before any payment is
made to the holders of Common Stock or any other stock of USB ranking junior
upon liquidation to the Term Participating Preferred Stock.
 
    REDEMPTION.  The shares of Term Participating Preferred Stock will not be
redeemable.
 
    VOTING.  The shares of Term Participating Preferred Stock shall not afford
the holders thereof any right to vote or consent except as required by law.
 
    TRANSFER. A share of Term Participating Preferred Stock may not be
transferred by any person to whom such share is issued by USB except: (1) by an
employee to such employee's spouse or children or trusts for their benefit or
the benefit of such employee; (2) by the laws of descent; or (3) to USB; and, in
each such case, without the receipt of value therefor.
 
    USB SERIES 1990A PREFERRED STOCK
 
    In connection with the sale by USB of 37,800,000 shares of USB Common Stock
and accompanying periodic stock purchase rights and risk event warrants in a
private placement in July 1990, USB may under certain circumstances be obligated
to issue up to 12,750 shares of its Series 1990A Preferred Stock. See "--Common
Stock--Periodic Stock Purchase Rights and Risk Event Warrants" below. The shares
of Series 1990A Preferred Stock would, if issued, provide for a liquidation
preference of $100,000 per share. The dividend rate would be adjusted quarterly
and would be determined at the time of issuance.
 
    If, at the time of any annual meeting of USB Shareholders for the election
of directors, the amount of accrued but unpaid dividends on the Series 1990A
Preferred Stock were equal to at least six quarterly dividends on such series,
then the number of directors of USB would be increased by one and the holders of
such Series 1990A Preferred Stock, voting as a separate class, would be entitled
to elect one additional director who would continue to serve the full term for
which he or she would have been elected, notwithstanding the declaration or
payment of any dividends on the Series 1990A Preferred Stock. The affirmative
vote or consent of the holders of at least two-thirds of the outstanding shares
of USB Series 1990A Preferred Stock will be required for any amendment of the
USB Certificate (including any certificate of designation or any similar
document relating to any series of preferred stock of USB) which will adversely
affect the powers, preferences, privileges or rights of the USB Series 1990A
Preferred Stock. The affirmative vote or consent of the holders of at least
two-thirds of the outstanding shares of USB Series 1990A Preferred Stock will be
required to issue, authorize, or increase the authorized amount of, or issue or
authorize any obligation or security convertible into or evidencing a right to
purchase, any additional class or series of stock ranking prior to the USB
Series 1990A Preferred Stock as to dividends or upon liquidation.
 
    ADDITIONAL PROVISIONS
 
    The rights of holders of USB Common Stock will be subject to, and may be
adversely affected by, the rights of holders of any preferred stock that may be
issued in the future. Any such issuance may adversely affect the interests of
holders of the USB Common Stock by (1) limiting the control that such holders
may exert by exercise of their voting rights or (2) by subordinating their
rights in liquidation to the rights of the holders of preferred stock of USB. In
addition, the issuance of shares of preferred stock of USB may discourage
takeover attempts and other changes in control of USB, by limiting the exercise
of control by a person who has gained a substantial equity interest in USB has
no current plans or agreements with respect to the issuance of any other shares
of preferred stock, except as described above with respect to the Series 1990A
Preferred Stock.
 
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    COMMON STOCK
 
    GENERAL.  Each share of USB Common Stock is entitled to such dividends as
may from time to time be declared by the USB Board of Directors from any funds
legally available for dividends. USB may not declare any cash dividends on, or
make any payment on account of, the purchase, redemption or other retirement of,
USB Common Stock unless full dividends (including accumulated dividends, if
applicable) have been paid or declared or set apart for payment upon all
outstanding shares of the preferred stock of USB and USB is not in default or in
arrears with respect to any sinking or other analogous fund or other agreement
for the purchase, redemption or other retirement of any shares of preferred
stock of USB. Holders of USB Common Stock are entitled to one vote per share.
Shareholders do not have the right to cumulate their votes in the election of
directors. USB Common Stock has no conversion rights and the holders of USB
Common Stock have no preemptive or other rights to subscribe for additional
securities of USB. In the event of the liquidation of USB, after the payment or
provision for payment of all debts and liabilities and subject to the rights of
the holders of preferred stock of USB which may be outstanding, the holders of
USB Common Stock will be entitled to share ratably in the remaining assets of
USB. The USB Common Stock is listed on the NYSE.
 
    USB DIVIDEND REINVESTMENT AND COMMON STOCK PURCHASE PLAN.  Pursuant to its
USB Reinvestment and Purchase Plan, USB provides eligible shareholders with a
method of investing cash dividends and optional cash payments at 100% of the
average price (as defined in the USB Reinvestment and Purchase Plan) in
additional shares of USB Common Stock without payment of any brokerage
commission or service charge. The USB Reinvestment and Purchase Plan includes
certain dollar limitations on participation and provides for eligible
shareholders to elect dividend reinvestment on only a part of the shares
registered in the name of a participant (while continuing to receive cash
dividends on remaining shares).
 
    PERIODIC STOCK PURCHASE RIGHTS AND RISK EVENT WARRANTS.  USB has entered
into (i) a Stock Purchase Agreement, dated as of May 30, 1990 (as amended, the
"STOCK PURCHASE AGREEMENT"), by and among Corporate Partners, L.P. ("CORPORATE
PARTNERS"), Corporate Offshore Partners, L.P. ("OFFSHORE" and, together with
Corporate Partners, the "PARTNERSHIPS"), The State Board of Administration of
Florida ("STATE BOARD") solely in its capacity as a managed account and not in
its individual capacity (State Board and the Partnerships being referred to
herein collectively as the "PURCHASERS"), Corporate Advisors, L.P. and USB and
(ii) a Stock Purchase Agreement, dated as of May 30, 1990 (the "FLORIDA STOCK
PURCHASE AGREEMENT"), by and between State Board in its individual capacity and
USB. Pursuant to the Stock Purchase Agreement, USB sold (a) to Corporate
Partners 26,568,723 shares of USB Common Stock, 10 Periodic Stock Purchase
Rights (each a "PSPR") and one Risk Event Warrant, (b) to Offshore 1,931,928
shares of USB Common Stock, 10 PSPRs and one Risk Event Warrant and (c) to State
Board 2,819,349 shares of USB Common Stock, 10 PSPRs and one Risk Event Warrant.
Pursuant to the Florida Stock Purchase Agreement, USB sold to State Board
6,480,000 shares of USB Common Stock, 10 PSPRs and one Risk Event Warrant.
 
    The Stock Purchase Agreement and the Florida Stock Purchase Agreement
contain transfer restrictions with respect to the shares of USB Common Stock
acquired thereunder and standstill provisions limiting further acquisitions of
USB Common Stock by the Purchasers and State Board. The Stock Purchase Agreement
and the Florida Stock Purchase Agreement also grant each of the Purchasers and
State Board the right to purchase its pro rata share of any Voting Securities
(as defined in the Stock Purchase Agreement) sold by USB for cash, subject to
certain exceptions. Pursuant to the Stock Purchase Agreement, the Purchasers
have designated one person to act as a non-voting observer of the USB Board of
Directors.
 
    Each PSPR issued to the Purchasers and State Board relates to a specific
twelve-month period commencing with the twelve-month period following closing of
the transactions contemplated under the Stock Purchase Agreement and the Florida
Stock Purchase Agreement. Each PSPR shall become exercisable in the event that a
Dividend Shortfall (as defined in the Stock Purchase Agreement) exists
 
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<PAGE>
for the specific twelve-month period to which such PSPR relates. A Dividend
Shortfall will be deemed to exist to the extent that USB has not paid a cash
dividend equal to $0.0683 per share of USB Common Stock for each quarter within
such twelve-month period. The PSPRs will be exercisable for that number of
shares of USB Common Stock or (subject to the prior approval of the Federal
Reserve Board) depositary shares representing one one-thousandth of a share of
Series 1990A Preferred Stock ("DEPOSITARY SHARES") such that the holders of
PSPRs will receive value equal to the Dividend Shortfall. Once a PSPR has become
exercisable, it will remain exercisable for a one-year period at an exercise
price of $1.25 per share of USB Common Stock or $1.00 per Depositary Share. If a
PSPR were to become exercisable and were not redeemed by USB as described below,
the issuance of Depositary Shares or USB Common Stock upon exercise of a PSPR
could adversely affect the market price of the USB Common Stock. If the PSPRs
were to be exercised for USB Common Stock, there could be substantial dilution
of the USB Common Stock.
 
    Each Risk Event Warrant will become exercisable in the event of certain
defined change of control events with respect to USB where the value received by
holders of the USB Common Stock is less than $4.625 per share, or in certain
circumstances in the event the USB Common Stock is valued at less than $4.625
per share on the tenth anniversary of the closing of the transactions
contemplated under the Stock Purchase Agreement. The Risk Event Warrants will be
exercisable for that number of shares of USB Common Stock at an exercise price
of $1.25 per share or, in certain circumstances (subject to the prior approval
of the Federal Reserve Board), Depositary Shares such that the holders of Risk
Event Warrants will receive value equal to such shortfall. If the Risk Event
Warrants were to become exercisable and were not redeemed by USB as described
below, the issuance of Depositary Shares or USB Common Stock upon exercise of a
Risk Event Warrant could adversely affect the market price of the USB Common
Stock. If the Risk Event Warrants were to be exercised for USB Common Stock,
there could be substantial dilution of the USB Common Stock. In the event of a
change in control at a time when the market price of the USB Common Stock is
less than $4.625 per share, the Risk Event Warrants may have the effect of
reducing the price per share to be received by the holders of the USB Common
Stock.
 
    In the event of the exercise of a Risk Event Warrant upon the occurrence of
certain change of control events, USB may, at its option (subject to the prior
approval of the Federal Reserve Board), elect to have such Risk Event Warrant
become exercisable for other securities of USB acceptable to the holder of such
Risk Event Warrant in lieu of the shares of USB Common Stock for which such Risk
Event Warrant would otherwise become exercisable. In addition, USB has the right
(subject to the prior approval of the Federal Reserve Board) to redeem any PSPR
at a price equal to the Dividend Shortfall and any Risk Event Warrant at a price
equal to the Value Shortfall (as defined in the Stock Purchase Agreement) or the
Termination Shortfall Amount (as defined in the Stock Purchase Agreement), as
applicable, after such PSPR or Risk Event Warrant, as the case may be, shall
have become exercisable. USB also has entered into a registration rights
agreement with the Purchasers and with State Board pursuant to which the
Purchasers and State Board, respectively, are granted certain rights to cause
USB to register with the Commission the USB Common Stock acquired pursuant to
the Stock Purchase Agreement and the Florida Stock Purchase Agreement and the
securities acquired upon exercise of the PSPRs and the Risk Event Warrants.
 
    The foregoing is a summary of the transactions contemplated by the Stock
Purchase Agreement and the Florida Stock Purchase Agreement and related
documents and is qualified in its entirety by the more detailed information
contained in such agreements and documents, copies of which are incorporated by
reference as exhibits to the Registration Statement of which this Proxy
Statement/ Prospectus is a part.
 
CERTAIN PROVISIONS OF THE USB CERTIFICATE AND USB BYLAWS
 
    The USB Certificate requires the affirmative vote of the holders of 80% of
the "Voting Stock" (defined therein) of USB to approve certain mergers,
consolidations, reclassifications, dispositions of
 
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<PAGE>
assets or liquidation, involving or proposed by certain significant
shareholders, unless certain price and procedural requirements are met or unless
the transaction is approved by the "Continuing Directors" (defined therein). In
addition, the USB Certificate provides for classification of the USB Board of
Directors into three separate classes, sets a maximum board size of 30 and
authorizes action by the shareholders of USB only pursuant to a meeting and not
by a written consent. The foregoing provisions of the USB Certificate can only
be amended by the affirmative vote of the holders of not less than 80% of the
outstanding USB voting stock, except with respect to any amendment to the USB
Certificate to reduce the maximum number of USB directors to the greater of (i)
the number of directors then in office and (ii) 24, which amendment would
require the approval of the holders of a majority of the outstanding of USB
Common Stock pursuant to Delaware Law. The USB Bylaws provide that special
meetings of shareholders may be called only by the USB Board of Directors or the
chief executive officer. The overall effect of these provisions may be to delay
or prevent attempts by other corporations or groups to acquire control of USB
without negotiation with the USB Board of Directors.
 
COMPARISON OF RIGHTS OF USB SHAREHOLDERS AND BOC SHAREHOLDERS
 
    GENERAL
 
    USB is a bank holding company incorporated under and subject to all the
provisions of the DGCL and its Certificate of Incorporation and By-laws. BOC is
a California corporation incorporated under and subject to all the provisions of
the CGCL and its articles of incorporation and bylaws. BOC has been granted a
Certificate of Authority to operate as a state-chartered commercial bank subject
to all the provision of California law pertaining to banks.
 
    Upon consummation of the Merger, except for those persons who dissent from
the Merger and perfect their dissenters' rights under the National Bank Act (12
U.S.C. Section 215a), the shareholders of BOC will become shareholders of USB.
The rights of BOC shareholders differ from the rights of USB Shareholders
because the BOC charter documents and the laws of its state of incorporation
differ in certain material respects from the USB charter documents and the laws
of its state of incorporation.
 
    The following is a summary of the principal differences in the rights of BOC
shareholders as compared to the rights of USB Shareholders. For information on
how to obtain copies of the BOC Articles, the BOC Bylaws, the USB Certificate of
Incorporation, and the USB Bylaws, see "WHERE YOU CAN FIND MORE INFORMATION".
 
    CAPITAL STOCK
 
    The authorized capital stock of USB consists of 1,500,000,000 shares of USB
Common Stock, par value $1.25 per share, and 50,000,000 shares of preferred
stock, par value $1.00 per share. Unless action is required by applicable laws
or regulations, USB's Board of Directors has the power to adopt resolutions that
(1) provide for the issuance of preferred stock in one or more series and (2)
fix or limit the voting rights, designations, preferences, and relative,
participating, optional or other special rights of such stock. This power is
limited by applicable laws or regulations and may be delegated to a committee of
USB's Board of Directors.
 
    As of the BOC Record Date,       shares of USB Common Stock were issued
(including       shares held in treasury),       shares were reserved for
issuance under USB's employee and director plans and USB's dividend reinvestment
plan,       shares were reserved for issuance under outstanding warrants to
purchase USB Common Stock and       shares were reserved for issuance upon
exercise of the Periodic Stock Purchase Rights and Risk Event Warrants. As of
the BOC Record Date, there were 56,586 shares of preferred stock of USB
outstanding and 12,750 shares of preferred stock of USB reserved for issuance.
 
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<PAGE>
    BOC is authorized to issue 50,000,000 shares of common stock, no par value.
As of December 31, 1998, there were 14,545,341 shares of BOC common stock
outstanding. At that time, the only BOC options warrants, commitments, other
agreements or other rights relating to unissued BOC common stock (or security
convertible into BOC common stock) were warrants to purchase 631,115 shares of
common stock and options and warrants under BOC's D Warrants and stock option
plans to purchase 1,481,736 shares of BOC common stock. The BOC common stock is
not assessable.
 
    DIRECTORS
 
    Under the USB Bylaws, the USB board of directors has the authority to
determine the number of directors from time to time (provided that, under the
USB Certificate of Incorporation, the number of directors may not be less than
12 nor more than 30). The directors of USB are divided into three classes (Class
I, Class II and Class III) with each such class have the same number of
directors as nearly as is possible. The term of office of the Class I directors
will expire at USB's annual meeting in 1999, the term of office of the Class II
directors will expire at USB's annual meeting in 2000, and the term of office of
the Class III directors will expire at USB's annual meeting in 2001. At each
annual election of directors, the directors chosen to succeed those whose terms
have then expired are identified as being of the same class as the directors
they succeed and are elected for a term expiring at the third succeeding annual
election of directors. Vacancies and newly created directorships resulting from
an increase in the number of directors may be filled by a majority of the
directors then in office and the directors so chosen will hold office until the
next election of the class for which such directors were chosen and until their
successors are elected and qualified.
 
    The BOC bylaws provide that its Board of Directors shall consist of no less
than six nor more than 11 members with the exact number set by resolution of the
Board or by vote of the shareholders. The number of directors is presently fixed
at nine. Each director is elected at the annual meeting of shareholders to serve
a one year term and until his or her successor is elected. The minimum and
maximum number of directors may only be changed by vote of the shareholders.
 
    The BOC Bylaws provide that vacancies in the board of directors, except for
a vacancy created by the removal of a director, may be filled by a majority of
the remaining directors, though less than a quorum, or by a sole remaining
director, and each director so elected shall hold office until his or her
successor is elected at an annual or a special meeting of the shareholders. A
vacancy in the board of directors created by the removal of a director may only
be filled by the vote of a majority of the shares entitled to vote represented
at a duly held meeting at which a quorum is present, or by the written consent
of the holders of all of the outstanding shares. The shareholders may elect a
director or directors at any time to fill any vacancy or vacancies not filled by
the directors. Any such election by written consent, except to fill a vacancy by
removal, shall require the consent of holders of a majority of the outstanding
shares entitled to vote.
 
    INSPECTION OF SHAREHOLDER LISTS
 
    Under the DGCL any stockholder of record has the right to inspect, copy and
make extracts of the stockholder lists and certain stockholder materials,
including addresses, shareholdings and certain other information, at any time
for a purpose reasonably related to the person's interest as a stockholder. For
ten days prior to, and during, a stockholder meeting the stockholder list must
be open to inspection to stockholders for any purpose germane to the meeting.
During this ten-day period, the list must be kept at a place specified in the
notice of meeting in the city where the meeting is to be held, or, if not
specified, at the place the meeting is to be held.
 
    The right of BOC shareholders to inspect the BOC shareholder list is
governed by the CGCL which provides that one or more shareholders holding at
least five percent of the outstanding voting shares (one percent in the case of
shareholders who have filed a Schedule 14a with the SEC) are entitled to inspect
and copy the BOC shareholder list. In addition, any BOC shareholder has the
right
 
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to inspect the shareholder list at any time during normal business hours upon
written demand, provided that the purpose is related to the shareholder's
interest as a shareholder or a holder of a voting trust certificate.
Shareholders who wish to exercise inspection rights must follow the procedures
provided in Section 1600 of the CGCL.
 
    AMENDMENT OF CHARTER DOCUMENTS
 
    The DGCL requires approval by the holders of a majority of the voting power
of USB Common Stock and resolution of the USB board of directors in order to
amend the USB Certificate of Incorporation. The DGCL reserves the power to amend
or repeal the bylaws exclusively to the shareholders unless the certificate of
incorporation confers such power upon the directors.
 
    The USB Certificate of Incorporation provides that the USB Bylaws may be
amended or repealed by the USB board of directors, subject to the power of the
shareholders to amend or repeal any such change to the USB Bylaws.
 
    To amend the articles of incorporation of a California corporation, the CGCL
requires the approval of the corporation's board of directors and a majority of
the outstanding shares entitled to vote. An amendment cannot reduce the number
of directors on a board of directors having a fixed size or the minimum number
of directors on a board of directors having a variable size to fewer than five
directors if the votes cast against adoption of such a provision (or the shares
not consenting in the case of action by written consent) are equal to more than
16 2/3% of the outstanding shares entitled to vote. The BOC Articles do not
contain any supermajority voting provisions.
 
    AMENDMENT AND REPEAL OF BY-LAWS AND REGULATIONS
 
    Under the DGCL, holders of a majority of the voting power of a corporation
and, when provided in the certificate of incorporation, the directors of the
corporation, have the power to adopt, amend and repeal the by-laws of a
corporation. The USB Bylaws require a majority vote at any special or annual
shareholder meeting or a majority vote of the entire board of directors in order
to amend or repeal the provisions of the USB Bylaws.
 
    The CGCL provides that holders of a majority of the outstanding shares
entitled to vote and the corporation's board of directors each have the power to
adopt, amend or repeal a corporation's bylaws, although the articles or bylaws
of the corporation may restrict or eliminate the power of the board to take such
action. Furthermore, a bylaw provision cannot reduce the number of directors on
a board of directors having a fixed size or the minimum number of directors on a
board of directors having a variable size to fewer than five directors if the
votes cast against adoption of a such provision (or the shares not consenting in
the case of action by written consent) are equal to more than 16 2/3% of the
outstanding shares entitled to vote. Neither the BOC Bylaws nor the BOC Articles
restricts the power of the BOC Board to adopt, amend or repeal the BOC Bylaws,
except that the BOC Bylaws do not permit the BOC Board to change the minimum and
maximum number of directors set forth in the Bylaws.
 
    REMOVAL OF DIRECTORS
 
    The DGCL provides that directors may be removed from office, with or without
cause, by the holders of a majority of the voting power of all outstanding
voting stock, unless the corporation has a classified board and its certificate
of incorporation otherwise provides. If the corporation has cumulative voting
and less than the entire board is to be removed, no director may be removed
without cause if the votes cast against the director's removal would be
sufficient to elect that director if voted cumulatively either at an election of
the entire board of directors or for classes of the board. Under the USB
Certificate, USB Shareholders may remove a director only for cause upon a
majority vote of the shareholders.
 
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<PAGE>
    The CGCL provides that directors may be removed without cause if the removal
is approved by the majority of the outstanding shares entitled to vote, but the
CGCL further provides that with respect to directors of corporations not having
classified boards of directors, no director can be removed (unless the entire
board is removed) if the votes cast against removal of the director would be
sufficient to elect the director if voted cumulatively (without regard to
whether cumulative voting is permitted) at an election at which the same total
number of votes were cast and the entire number of directors authorized at the
time of the director's most recent election were then being elected. BOC does
not currently have a classified board.
 
    RIGHT TO CALL SPECIAL MEETINGS OF STOCKHOLDERS
 
    The DGCL permits special meetings of stockholders to be called by the board
of directors and such other persons, including stockholders, as the certificate
of incorporation or by-laws may provide. The DGCL does not require that
stockholders be given the right to call special meetings. The USB Bylaws provide
that special meetings of stockholders of the corporation may be called only by
the USB Board or the Chief Executive Officer.
 
    Under the CGCL, a corporation's board of directors, its chairman of the
board of directors, its president, the holders of shares entitled to cast not
less than 10% of the votes at a meeting of shareholders and such additional
persons as are specified in the corporation's articles or bylaws have the
authority to call special meetings of shareholders. According to the BOC
Articles and Bylaws, Special Meetings of the BOC shareholders, for the purpose
of taking any action permitted to be taken by the BOC shareholders under the
CGCL, California banking law or the BOC Articles of Incorporation or By-laws,
may be called at any time by the Chairman of the Board, or the President, or by
the Board of Directors, or by one or more shareholders holding not less than ten
percent (10%) of the votes entitled to be cast at the meeting. Upon request in
writing that a special meeting of shareholders be called for any proper purpose,
the officer entitled to call a special meeting shall cause notice to be given to
shareholders entitled to vote not less than 30 not more than 60 days after the
receipt of the request. The notice of any special meeting shall specify the
general nature of the business to be transacted and no other business may be
transacted at such meeting.
 
    STOCKHOLDER ACTION WITHOUT A MEETING
 
    The DGCL provides that, unless otherwise provided in the certificate of
incorporation, any action that may be taken at a meeting of stockholders may be
taken without a meeting, without prior notice and without a vote, if the holders
of common stock having not less than the minimum number of votes otherwise
required to approve such action at a meeting of stockholders consent in writing.
The USB Certificate provides that any action required or permitted to be taken
by the stockholders must be effected at a duly called annual or special meeting
of stockholders and may not be effected by any consent in writing by such
stockholders.
 
    The CGCL provides that, unless otherwise provided in the articles of
incorporation, any action that may be taken at a special or annual meeting of
shareholders may be taken without a meeting and without prior notice if a
consent in writing, setting forth the action taken, is signed by the holders of
outstanding shares having not less than the minimum number of votes that would
be necessary to authorize or take such action at a meeting at which all shares
entitled to vote thereon were present and voted. The BOC Articles do not
otherwise provide. Except as discussed above with respect to filling vacancies
on the board of directors, the CGCL does not permit directors to be elected by
written consent except by the unanimous written consent of all shares entitled
to vote in the election of directors.
 
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    CLASS VOTING
 
    The DGCL requires voting by separate classes only with respect to amendments
to a corporation's certificate of incorporation that increase or decrease the
aggregate number of authorized shares of such class, increase or decrease the
par value of the shares of such class, or alter or change the powers,
preferences, or special rights of the shares of such class so as to affect them
adversely.
 
    The CGCL requires voting by separate classes with respect to amendments to a
corporation's articles of incorporation that (i) increase or decrease the
aggregate number of authorized shares of the class, (ii) effect an exchange,
reclassification or cancellation of all or part of the shares of such
class,(iii) effect an exchange, or create a right of exchange, of all or part of
the shares of another class into shares of such class, (iv) change the rights,
preferences, privileges or restrictions of the shares of such class, (v) create
a new class of shares having rights, preferences or privileges prior to the
shares of such class, or increase the rights, preferences or privileges or the
number of authorized shares of any class having rights, preferences or
privileges prior to the shares of such class, (vi) divide the shares of any
class of preferred shares into series having different rights, preferences,
privileges or restrictions or authorize the board to do so, or (vii) cancel or
otherwise affect dividends on the shares of such class that have accrued but
have not been paid. In addition, the CGCL requires voting by class with respect
to mergers, share exchanges, reorganizations and similar transactions. For
purposes of such voting requirement, classes of common stock differing only as
to voting rights are considered a single class of shares.
 
    CUMULATIVE VOTING
 
    Under the DGCL, stockholders do not have the right to cumulate their votes
in the election of directors unless such right is granted in the certificate of
incorporation. The USB Certificate does not grant such rights.
 
    Under the CGCL, shareholders have the right to cumulate their votes in the
election of directors, but a listed corporation may adopt a provision to
eliminate cumulative voting. The shareholders of BOC are entitled to cumulative
voting rights in connection with the election of directors.
 
    PROVISIONS AFFECTING BUSINESS COMBINATIONS
 
    Section 203 of the DGCL provides generally that any person who acquires 15%
or more of a corporation's voting stock (thereby becoming an "Interested
Stockholder") may not engage in a wide range of "business combinations" with the
corporation for a period of three years following the date the person became an
interested stockholder, unless (i) the board of directors of the corporation has
approved, prior to that acquisition date, either the business combination or the
transaction that resulted in the person becoming an interested stockholder, (ii)
upon consummation of the transaction that resulted in the person becoming an
interested stockholder, that person owns at least 85% of the corporation's
voting stock outstanding at the time the transaction commenced (excluding shares
owned by persons who are directors and also officers and shares owned by
employee stock plans in which participants do not have the right to determine
confidentially whether shares will be tendered in a tender or exchange offer),
or (iii) the business combination is approved by the board of directors and
authorized by the affirmative vote (at an annual or special meeting and not by
written consent) of at least 66 2/3% of the outstanding voting stock not owned
by the interested stockholder. These restrictions on interested stockholders do
not apply under certain circumstances, including, but not limited to, the
following (i) if the corporation's original certificate of incorporation
contains a provision expressly electing not to be governed by Section 203 of the
DGCL, or (ii) if the corporation, by action of its stockholders, adopts an
amendment to its by-laws or certificate of incorporation expressly electing not
to be governed by such section. The USB Certificate requires the affirmative
vote of the holders of not less than 80% of the outstanding shares of USB
entitled to vote in connection with certain "Business
 
                                       83
<PAGE>
Transactions" (as defined in the USB Certificate) involving a "Related Person"
(as defined in the USB Certificate). The 80% shareholder vote is not required if
the Business Transaction meets certain "fair price" criteria or in the event the
"Continuing Directors" (as defined in the USB Certificate) approve the
transaction. The USB Certificate also requires the vote of the holders of at
least 80% of the outstanding shares of USB entitled to vote generally in the
election of directors to add to, alter, change or repeal the supermajority
provisions. Neither the CGCL nor the BOC Articles contain any provisions similar
to the DGCL and the USB Certificate provisions just described.
 
    MERGERS, ACQUISITIONS AND CERTAIN OTHER TRANSACTIONS
 
    Except as disclosed above in "--Provisions Affecting Business Combinations,"
the DGCL and USB's governing documents require approval of mergers,
consolidations and dispositions of all or substantially all of a corporation's
assets (other than so-called "parent-subsidiary" mergers) by a majority of the
voting power of the corporation. The DGCL does not require stockholder approval
for majority share acquisitions or for combinations involving the issuance of
less than 20% of the voting power of the corporation, except for "business
combinations" subject to Section 203 of the DGCL.
 
    Under the CGCL, a merger or consolidation by a California corporation
generally requires the affirmative vote of a majority of the outstanding shares
entitled to vote in each particular class of shares, voting separately by class.
For purposes of such voting requirement, classes of common stock differing only
as to voting rights are considered a single class of shares. See "--Class
Voting." Neither the BOC Articles nor the BOC Bylaws provides for any greater
vote.
 
    RIGHTS OF DISSENTING STOCKHOLDERS
 
    Under the DGCL, appraisal rights are available to dissenting stockholders in
connection with certain mergers or consolidations. However, unless the
certificate of incorporation otherwise provides, the DGCL does not provide for
appraisal rights (i) with respect to shares of a corporation that are listed on
a national securities exchange or designated as a national market systems
security on an interdealer quotations system by the National Association of
Securities Dealers, Inc. or held of record by more than 2,000 stockholders (as
long as the stockholders receive in the merger shares of the surviving
corporation or of any other corporation the shares of which are listed on a
national securities exchange or designated as a national market systems security
on an interdealer quotations system by the National Association of Securities
Dealers, Inc. or held of record by more than 2,000 stockholders) or (ii) if the
corporation is the surviving corporation and no vote of its stockholders is
required for the merger. The USB Certificate does not provide otherwise. The
DGCL does not provide appraisal rights to stockholders who dissent from the sale
of all or substantially all of a corporation's assets or an amendment to the
corporation's certificate of incorporation, although a corporation's certificate
of incorporation may so provide. The USB Certificate does not so provide.
 
    Under the CGCL, if approval of the outstanding shares of a corporation is
required for a merger, exchange or a sale of all or substantially all of a
corporation's assets, appraisal rights are available to dissenting shareholders.
However, subject to certain exceptions, the CGCL does not provide for appraisal
rights with respect to shares of certain corporations, including those that are
listed on a national securities exchange or designated as a national market
systems security on an interdealer quotations system by the National Association
of Securities Dealers, Inc. (as long as such exchange or interdealer quotation
system has been certified by rule or order of the Commissioner of Corporations
of the State of California). An exception to the rule regarding shares listed on
a national securities exchange or designated as a national market systems
security on an interdealer quotations system exists if demands for appraisal are
filed with respect to 5% or more of the outstanding shares of that class, in
which case, the holders of such shares are entitled to appraisal rights. The BOC
Common Stock is quoted on Nasdaq and BOC Shareholders therefore have appraisal
rights only if 5% or more of the outstanding shares of BOC Common Stock seek
appraisal rights. However, the BOC Shareholders'
 
                                       84
<PAGE>
rights, if they choose to dissent, is governed by both state and federal laws.
See "DISSENTERS APPRAISAL RIGHTS".
 
    Under the DGCL, among other procedural requirements, a stockholder's written
demand for appraisal of shares must be received before the taking of the vote on
the matter giving rise to appraisal rights. Under the CGCL, a shareholder of a
corporation that is listed on a national securities exchange or designated as a
national market systems security on an interdealer quotations system must
deliver written demand for appraisal to the corporation not later than the date
of the shareholders' meeting being held to vote upon the corporation action
giving rise to appraisal rights. However, because the Merger being proposed here
is with a national association, eligibility is determined by federal law and a
written demand for appraisal at or prior to the Annual Meeting is not required.
 
    DIVIDENDS
 
    Both the DGCL and the CGCL permit dividends to be paid in cash, property or
shares of a corporation's capital stock. The DGCL provides that a corporation
may pay dividends out of any surplus, and, if it has no surplus, out of any net
profits for the fiscal year in which the dividend was declared or for the
preceding fiscal year (provided that such payment will not reduce capital below
the amount of capital represented by all classes of shares having a preference
upon the distribution of assets). The CGCL provides that a corporation may pay
dividends if the amount of the retained earnings of the corporation immediately
prior thereto equals or exceeds the amount of the proposed distribution. The
CGCL also provides that a corporation may pay dividends if immediately after
giving effect thereto, (i) the sum of the assets of the corporation (exclusive
of goodwill, capitalized research and development expenses and deferred charges)
would be at least equal to 1.25 times its liabilities (not including deferred
taxes, deferred income and other deferred credits) and (ii) the current assets
of the corporation would be at least equal to its current liabilities or, if the
average of the earnings of the corporation before taxes on income and before
interest expense for the two preceding fiscal years was less than the average of
the interest expense of the corporation for those fiscal years, at least equal
to 1.25 times it current liabilities. The holders of BOC Common Stock receive
dividends when and as declared by the BOC Board of Directors out of funds
legally available, subject to restrictions set forth in the California Banking
Laws.
 
    PREEMPTIVE RIGHTS OF STOCKHOLDERS
 
    The DGCL provides that no stockholder shall have any preemptive rights to
purchase additional securities of the corporation unless the certificate of
incorporation expressly grants such rights. The USB Certificate does not provide
for preemptive rights. The CGCL provides that a corporation's articles of
incorporation may grant to shareholders preemptive rights to subscribe to any or
all issues of shares or securities. The BOC Articles do not grant preemptive
rights to shareholders.
 
    INDEMNIFICATION
 
    The DGCL allows a Delaware corporation to include in its bylaws, and the USB
Bylaws contain, a provision eliminating the liability of a director for monetary
damages for a breach of such director's fiduciary duties as a director, except
liability (i) for any breach of the director's duty of loyalty to the
corporation or its stockholders, (ii) for acts or omissions not in good faith or
that involve intentional misconduct or knowing violation of law, (iii) under
Section 174 of the DGCL (which deals generally with unlawful payments of
dividends, stock repurchases and redemptions), and (iv) for any transaction from
which the director derived an improper personal benefit.
 
    The DGCL permits a corporation to indemnify any person who was or is a party
or is threatened to be made a party to any threatened, pending or completed
action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the corporation) by
 
                                       85
<PAGE>
reason of the fact that such person is or was a director, officer, employee or
agent of the corporation, or is or was serving at the request of the corporation
as a director, officer, employee or agent of another corporation, partnership,
joint venture, trust or other enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by such person in connection with such action, suit or proceeding if
such person acted in good faith and in a manner such person reasonably believed
to be in or not opposed to the best interests of the corporation, and, with
respect to any criminal action or proceeding, had no reasonable cause to believe
the relevant conduct was unlawful. The DGCL permits a corporation to indemnify
any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the
corporation by reason of the fact that such person acted in any of the
capacities set forth above against expenses (including attorneys' fees) actually
and reasonably incurred by such person in connection with the defense or
settlement of such action if such person acted in good faith and in a manner
such person reasonably believed to be in or not opposed to the best interests of
the corporation, except that no indemnification may be made in respect of any
claim or issue as to which such person is adjudged liable to the corporation
unless, and only to the extent that, the Court of Chancery or the court in which
such action was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case, such
person is fairly and reasonably entitled to indemnity for such expenses as the
Court of Chancery of Delaware or such other court deems proper.
 
    The DGCL provides that a corporation must indemnify a present or former
director or officer of a corporation who has been successful on the merits or
otherwise in the defense of any action, suit or proceeding referred to above or
in defense of any claim, issue or matter therein against expenses (including
attorneys' fees) actually and reasonably incurred by such person in connection
therewith. The USB Bylaws provide that it shall indemnify to the full extent
permitted by, and in the manner permissible under the Delaware General
Corporation law, as amended from time to time, any person made, or threatened to
be made, a party to any action, suit, or proceeding, whether criminal, civil,
administrative, or investigative, by reason of the fact that such person (i) is
or was a director, advisory director, or officer of USB or any predecessor of
USB, or (ii) is or was a director, advisory director or officer of USB or any
predecessor of USB and served any other corporation, partnership, joint venture,
trust or other enterprise as a director, advisory director, officer, partner,
trustee, employee or agent at the request of USB or any predecessor of USB. The
foregoing rights of indemnification shall not be deemed exclusive of any other
rights to which any such director, advisory director or officer may be entitled
apart from the provisions here.
 
    The US Board of Directors, in its discretion, shall have power on behalf of
USB to indemnify any person, other than such a director, advisory director or
officer, made a party to any action, suit, or proceeding by reason of the fact
that such person, or the testator or intestate of such person, is or was an
employee of USB.
 
    The DGCL permits a corporation to pay expenses (including attorneys' fees)
incurred by an officer or director in defending any proceeding in advance of the
final disposition of such matter upon receipt of an undertaking by or on behalf
of such person to repay such amount if it is ultimately determined that such
person is not entitled to indemnity. The USB Certificate provides that expenses
incurred in defending any proceedings shall be paid by USB in advance of the
final disposition thereof, and that if required by the DGCL, such advancement of
expenses incurred by a USB Indemnitee in his or her capacity as a director or
officer (and not in any other capacity) will be made only upon delivery of an
undertaking by or on behalf of the USB Indemnitee to repay such amount unless it
is ultimately determined that the USB Indemnitee is entitled to indemnification.
The USB Certificate and the DGCL also provide that the indemnification
provisions of the USB Certificate and the statute are not exclusive of any other
right which a person seeking indemnification may have or later acquire under any
statute, provision of the USB Certificate and USB Bylaws, agreement, vote of
stockholders or
 
                                       86
<PAGE>
disinterested directors, or otherwise. In addition, the USB Certificate and the
DGCL provide that the corporation may maintain insurance, at its expense, to
protect itself and any director, officer, employee or agent of the corporation
or of any subsidiary or affiliate or another corporation, partnership, joint
venture, trust or other enterprise against any expense, liability or loss,
whether or not USB would have the power to indemnify such person against such
expense, liability or loss under the DGCL.
 
    The indemnification laws of the State of California allow indemnification to
directors, officers and agents that act in good faith reasonably believing they
are acting in the best interests of the corporation. In the case of a criminal
matter, the person being indemnified must have had no reasonable basis for
believing the conduct to be unlawful.
 
    If the indemnification relates to an action by or in the right of the
corporation to procure a judgment in its favor, indemnification is limited to
expenses actually and reasonably incurred in the conduct of his or her defense
or settlement but only if the person acted in good faith believing the actions
to be in the best interests of the corporation and its shareholders. There is no
indemnification for: (i) amounts paid in settlements without court approval for
a pending action, (ii) expenses incurred in defending a pending action which is
settled or otherwise disposed of without court approval, (iii) matters in which
the person shall have been adjudged liable to the corporation unless the court
determines that such person is entitled to be indemnified, or (iv) certain other
matters specified in the California Corporations Code. Under the BOC bylaws, BOC
is required to indemnify its directors, and permitted to indemnify its other
agents to the extent permitted by the California General Corporation Law. The
BOC bylaws also provide that BOC may advance expenses incurred in defending the
proceedings just described upon receipt of an undertaking to return any amounts
advanced to the extent that it ultimately determined the person was not legally
entitled to be indemnified by BOC in the proceeding.
 
                          DISSENTERS' APPRAISAL RIGHTS
 
    BOC shareholders who dissent from the merger have the opportunity to
exercise dissenters' rights and receive cash in lieu of USB common stock
following the merger. These rights are provided under federal and state law. The
California law is contained in Sections 1300 and 1304 of the California General
Corporate law (attached as Appendix C). The federal law is contained in 12
U.S.C.A. Section 215a (attached as Appendix D). To exercise these rights, the
shareholder must satisfy eligibility requirements and follow the procedures
outlined in the statutes. FAILURE TO ESTABLISH ELIGIBILITY OR TO FOLLOW REQUIRED
PROCEDURES WILL RESULT IN LOSS OF DISSENTERS' RIGHTS. The elements of
dissenters' rights are: eligibility, demand, valuation, and payment. A brief
summary of these elements follows:
 
ELIGIBILITY
 
    In order to establish eligibility for dissenters' rights, a shareholder must
either (i) vote against the merger at the annual meeting or (ii) notify the
presiding officer of the meeting at or prior to the meeting that the shareholder
dissents from the plan of merger. Unless a shareholder takes one of these two
actions, he will not be eligible for dissenters' rights and will receive USB
common stock, not cash, in exchange for his BOC common stock.
 
DEMAND
 
    A shareholder who is eligible for dissenters' rights has the right to
require USB to purchase his or her shares of BOC common stock for cash at the
fair market value of those shares as of the valuation date. The valuation date
(February 18, 1999) is the day immediately prior to the day the proposed
 
                                       87
<PAGE>
merger was announced. Dissenting shareholders who wish to exercise this right
must perfect it by giving USB a written demand as follows:
 
    Prior to the 30th day following the date the merger is consummated, a
dissenting shareholder must surrender his BOC common stock certificates to USB
with a written demand that USB purchase those shares for cash at their fair
market value as of the valuation date. The written demand, together with the
shareholder's BOC common stock certificates, must be delivered to USB at U.S.
Bancorp, U.S. Bank Place, 601 Second Avenue South, Minneapolis, Minnesota
55402-4302, Attention: General Counsel. The demand must:
 
    (i) be made by the person who was the shareholder of record on the BOC
       record date for the annual meeting or his or her duly authorized
       representative (if the record owner of the shares is a broker or other
       nominee, arrangements must be made with that record holder for it to make
       the demand),
 
    (ii) state the number of dissenting shares and include the shareholder's
       certificate, and
 
    (iii) include a demand that USB purchase the shares at the fair market value
       of such shares as of the valuation date.
 
    In order to help assure that the demand is properly executed and delivered,
USB and BOC recommend that the demand:
 
    (i) be sent by registered or certified mail, return receipt requested,
 
    (ii) be signed by the shareholder of record (or his or her duly authorized
       representative) exactly as his or her name appears on the stock
       certificates evidencing the shares (must be signed by all owners whose
       names appear on the stock certificate if more than one), and
 
    (iii) any person signing a demand in any representative capacity (such as
       attorney-in-fact, executor, administrator, trustee or guardian) should
       indicate his or her title and be prepared, if USB requests, to furnish
       written proof of his or her capacity and authority to sign the demand.
 
A DEMAND IS NOT EFFECTIVE FOR ANY PURPOSE IF IT IS NOT RECEIVED BY USB BEFORE 30
DAYS AFTER THE CONSUMMATION OF THE MERGER. ONCE THE SHAREHOLDER ELIGIBLE TO
EXERCISE DISSENTER'S RIGHTS MAKES A DEMAND FOR USB TO PURCHASE THE SHAREHOLDER'S
SHARES, THAT DEMAND MAY NOT BE WITHDRAWN WITHOUT THE CONSENT OF USB.
 
VALUATION
 
    Under the applicable federal statute, 12 U.S.C. Section 215a the method of
valuing the BOC shares is determined by California law. If the merger is
approved, within ten days of the approval USB will forward to shareholders that
have established their eligibility for dissenters' rights a notice of the
approval of the merger, copies of the sections of the California Corporations
Code dealing with valuation of dissenters' shares (Section 1300 and 1304), a
statement of the price determined by USB to represent the fair market value of
the dissenting shares, and a brief description of the procedure to be followed
by shareholders who desire to exercise their dissenters' rights.
 
    If dissenting shareholders agree with the share value set by the
corporation, that will be the price for the shares. If there is a dispute as to
whether the price set by the corporation is the fair market value, then the
shareholder, within six months after the date on which the notice of approval of
the merger is mailed to the shareholder, may file a complaint in the Superior
Court of the County of San Diego to resolve the issue (or may join in an action
of another dissenting shareholder).
 
                                       88
<PAGE>
    BOC shareholders eligible to exercise dissenters' rights should carefully
consider the above discussion, Appendices C and D, and consult an independent
investment advisor before exercising them.
 
PAYMENT
 
    If the value set by USB is accepted, payment will be made promptly following
receipt of a legally sufficient demand received before 30 days after consumation
of the Merger. If the value set by USB is disputed and the shareholder commences
litigation to establish the value, payment will be made promptly following the
time a judgment determining the value becomes final.
 
    A holder of BOC common stock ("DISSENTING SHARES"):
 
    (i) where such stock is outstanding immediately prior to the Effective Time,
 
    (ii) where such stock has been voted against the merger at the meeting of
shareholders where the merger was approved or as to which the holder has given
notice, at or prior to that meeting, to the presiding officer of the meeting
that such holder dissents to the merger, and
 
   (iii) where such holder has made demand on USB for cash in lieu of USB common
stock for such Dissenting Shares following the procedures outlined above
 
will be entitled only to receive the fair market value of the Dissenting Shares
and not USB common stock for them. If a holder of BOC common stock fails to
satisfy any of items (i) through (iii) above or having satisfied them, with the
consent of USB, waives such rights, such holder will not be eligible for
dissenters' rights and each such share will be deemed to have been converted
into shares of USB Common Stock, without any interest thereon.
 
                                 LEGAL MATTERS
 
    The validity of the USB Common Stock to be issued in connection with the
Merger will be passed upon by Dorsey & Whitney LLP.
 
                                    EXPERTS
 
    The financial statements of BOC as of December 31, 1998, and 1997 and for
each of the three years in the period ended December 31, 1998 incorporated in
this Proxy Statement/Prospectus by reference from BOC's annual report on Form
10-K for the year ended December 31, 1998 have been audited by Deloitte & Touche
LLP, independent auditors, as stated in their report, which is incorporated by
reference herein, as has been so incorporated in reliance upon the report of
such firm given upon their authority as experts in accounting and auditing.
 
    The consolidated financial statements of U.S. Bancorp (the Company)
appearing in the Company's Annual Report (Form, 10-K) for the year ended
December 31, 1998, have been audited by Ernst & Young LLP, independent auditors,
as set forth in their report thereon included therein and incorporated herein by
reference. Such consolidated financial statements are incorporated herein by
reference in reliance upon such report given upon the authority of such firm as
experts in accounting and auditing.
 
                             SHAREHOLDER PROPOSALS
 
    Any proposal which a BOC shareholder wished to have included in BOC's
materials for BOC's Annual Meeting of Shareholders to be held in 2000 must have
been received at the main office of BOC at 600 West Broadway, Suite 100, San
Diego, California 92101, no later than [Date], 1999. BOC's Board of Directors
reviews each proposal received to determine if it satisfies the criteria
established by applicable law for inclusion in BOC's proxy materials.
 
                                       89
<PAGE>
                                 OTHER MATTERS
 
    The Board of Directors does not know of any matters to be presented to the
Annual Meeting other than those set forth above. However, if other matters come
before the Annual Meeting, it is the intention of the persons named in the
accompanying Proxy to vote said Proxy in accordance with the recommendation of
the Board of Directors on such matters, and discretionary authority to do so is
included in the Proxy.
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
INFORMATION REGARDING USB
 
    USB has filed with the Securities and Exchange Commission ("SEC") a
Registration Statement under the Securities Act of 1933, as amended (the
"SECURITIES ACT") that registers the distribution to BOC Shareholders of the
shares of USB Common Stock to be issued in connection with the Merger (the
"REGISTRATION STATEMENT"). The Registration Statement, including the attached
exhibits and schedules, contains additional relevant information about USB and
USB Common Stock. The rules and regulations of the SEC allow us to omit certain
information included in the Registration Statement from this Proxy
Statement/Prospectus.
 
    In addition, USB files reports, proxy statements and other information with
the SEC under the Exchange Act. You may read and copy this information at the
following locations of the SEC:
 
<TABLE>
<S>                            <C>                            <C>
    Public Reference Room        New York Regional Office        Chicago Regional Office
   450 Fifth Street, N.W.          7 World Trade Center              Citicorp Center
          Room 1024                     Suite 1300               500 West Madison Street
   Washington, D.C. 20549        New York, New York 10048              Suite 1400
                                                              Chicago, Illinois 60661-2511
</TABLE>
 
    You may also obtain copies of this information by mail from the Public
Reference Section of the SEC, 450 Fifth Street, N.W., Room 1024, Washington,
D.C. 20549, at prescribed rates.
 
    The SEC also maintains an Internet world wide web site that contains
reports, proxy statements and other information about issuers, like USB, who
files electronically with the SEC. The address of that site is
http://www.sec.gov.
 
    You can also inspect reports, proxy statements and other information about
USB at the offices of the NYSE, 20 Broad Street, New York, New York 10005.
 
    The SEC allows USB to "incorporate by reference" information into this Proxy
Statement/ Prospectus. This means that USB can disclose important information to
you by referring you to another document filed separately with the SEC. The
information incorporated by reference is considered to be a part of this Proxy
Statement/Prospectus, except for any information that is superseded by
information that is included directly in this document.
 
    This Proxy Statement/Prospectus incorporates by reference the documents
listed below that USB has previously filed with the SEC. They contain important
information about USB and its financial condition.
 
<TABLE>
<CAPTION>
USB SEC FILINGS                                 PERIOD
- ----------------------------------------------  ----------------------------------------------
<S>                                             <C>
Annual Report on Form 10-K....................  year ended December 31, 1998, as filed
                                                February 26, 1999
 
Current Reports on form 8-K...................  Filed January 20, 1999
</TABLE>
 
                                       90
<PAGE>
    USB incorporates by reference additional documents that it may file with the
SEC between the date of this Proxy Statement/Prospectus and the date of the
Annual Meeting. These documents include periodic reports, such as Annual Reports
on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, as
well as proxy statements.
 
INFORMATION REGARDING BOC
 
    BOC is subject to the informational requirements of the Exchange Act, and,
prior to December 22, 1997, in accordance with the Exchange Act filed reports,
proxy statements and other information with the FDIC. On December 22, 1997, BOC
became a member bank of the Federal Reserve System and, in accordance with the
regulations of the Federal Reserve Board has, since that date, filed such
reports, proxy statements and other information with the Federal Reserve Board.
Such reports, proxy statements and other information filed by BOC can be
inspected and copied at the public reference facilities maintained by the FDIC
at Registration & Disclosure Unit, 550 17th Street, N.W., Washington, D.C. 20429
and by the Federal Reserve Board at Division of Banking Supervision &
Regulation, 20th Street & Constitution Avenue, N.W., Washington, D.C. 20551.
Copies of such materials can be obtained from the FDIC and the Federal Reserve
Board at prescribed rates.
 
    The Federal Reserve Board allows BOC to "incorporate by reference"
information into this Proxy Statement/Prospectus. This means that the companies
can disclose important information to you by referring you to another document
filed separately either with the SEC or with the Federal Reserve Board. The
information incorporated by reference is considered to be a part of this Proxy
Statement/ Prospectus, except for any information that is superseded by
information that is included directly in this document. This Proxy
Statement/Prospectus incorporates by reference the documents listed below that
BOC has previously filed with the Federal Reserve Board. They contain important
information about BOC and its financial condition.
 
<TABLE>
<CAPTION>
BOC FEDERAL RESERVE BOARD FILINGS               PERIOD
- ----------------------------------------------  ----------------------------------------------
<S>                                             <C>
Annual Report on Form 10-K....................  Year ended December 31, 1998, as filed March
                                                  , 1999
 
Current Reports on Form 8-K...................  Filed February 22, 1999
</TABLE>
 
INFORMATION REGARDING USB AND BOC
 
    USB has supplied all information contained or incorporated by reference in
this Proxy Statement/ Prospectus relating to USB, as well as all pro forma
financial information, and BOC has supplied all such information relating to
BOC.
 
    Documents incorporated by reference are available from the companies without
charge, excluding any exhibits to those documents unless the exhibit is
specifically incorporated by reference as an exhibit in this Proxy
Statement/Prospectus. You can obtain documents incorporated by reference in this
Proxy Statement/Prospectus by requesting them in writing or by telephone from
the appropriate company at the following addresses:
 
<TABLE>
<S>                              <C>
              USB                              BOC
      Investor Relations            Investor/Public Relations
         U.S. Bancorp                   Bank of Commerce
        U.S. Bank Place                9918 Hibert Street
    601 Second Avenue South        San Diego, California 92131
    Minneapolis, Minnesota        Telephone (619) 536-4505 x138
          55402-4302
   Telephone (612) 973-1111
</TABLE>
 
                                       91
<PAGE>
    If you would like to request documents, please do so by June 1, 1999 to
receive them before the Annual Meeting. If you request any incorporated
documents from us, we will mail them to you by first class mail, or another
equally prompt means, within one business day after we receive your request.
 
    We have not authorized anyone to give any information or make any
representation about the Merger or our companies that is different from, or in
addition to, that contained in this Proxy Statement/Prospectus or in any of the
materials that we've incorporated into this document. Therefore, if anyone does
give you information of this sort, you should not rely on it. If you are in a
jurisdiction where offers to exchange or sell, or solicitations of offers to
exchange or purchase, the securities offered by this document or the
solicitation of proxies is unlawful, or if you are a person to whom it is
unlawful to direct these types of activities, then the offer presented in this
document does not extend to you. The information contained in this document
speaks only as of the date of this document unless the information specifically
indicates that another date applies.
 
                           FORWARD-LOOKING STATEMENTS
 
    This Proxy Statement/Prospectus (including information included or
incorporated by reference herein) contains certain forward-looking statements
with respect to the financial condition, results of operations, plans,
objectives, future performance and business of each of USB and BOC, as well as
certain information relating to the Merger, including, without limitation
statements preceded by, followed by or that include the words "believes,"
"expects," "anticipates," "estimates" or similar expressions. These
forward-looking statements involve certain risks and uncertainties. Actual
results may differ materially from those contemplated by such forward-looking
statements due to, among others, the following factors: (a) competitive
pressures among financial services companies increase, including competition for
SBA lending business; (b) changes in the interest rate environment reduce
interest margins; (c) general economic conditions, either internationally or
nationally or in the states or countries in which USB or BOC is doing business,
change or are less favorable than expected; (d) legislative or regulatory
changes adversely affect the businesses in which USB or BOC are engaged,
including changes in SBA lending programs or the Merger; and (e) technological
changes (including "Year 2000" data systems compliance issues) are more
difficult or expensive than anticipated.
 
    See "WHERE YOU CAN FIND MORE INFORMATION."
 
                                       92
<PAGE>
                             INDEX OF DEFINED TERMS
 
<TABLE>
<S>                                                                                   <C>
1989 Stock Option Plan..............................................................         61
1998 Change in Control..............................................................         71
Acquisition Announcement............................................................         54
Acquisition Transaction.............................................................         33
Act.................................................................................         42
Administrator.......................................................................         69
Affiliate Agreements................................................................         15
Agreement...........................................................................         14
Agreement to Change Control.........................................................         53
Annual Compensation.................................................................         56
Annual Meeting......................................................................         14
Average Stock Price.................................................................         17
Bank Merger Act.....................................................................         30
Base Unit Value.....................................................................         61
BOC.................................................................................          1
BOC 1998 Stock Plan.................................................................         61
BOC CEO Confidentiality Agreement...................................................         34
BOC CEO Employment Agreement........................................................         34
BOC Common Stock....................................................................         15
BOC Record Date.....................................................................         15
BOC Record Holders..................................................................         15
BOC SEVP Confidentiality Agreement..................................................         35
BOC SEVP Employment Agreement.......................................................         35
BOC Shareholders....................................................................         16
BOC Stock Option....................................................................         17
CEO Compensation and Benefits Agreement.............................................         52
CEO Disability Policy...............................................................         56
CGCL................................................................................     34, 73
Change of Control Payment...........................................................         53
Code................................................................................         17
Committee...........................................................................         56
Control.............................................................................         53
Corporate Partners..................................................................         77
Depositary Shares...................................................................         78
DFI.................................................................................         42
DGCL................................................................................         73
Disability..........................................................................         55
Disability Policy...................................................................         60
Dissenting Shares...................................................................     16, 89
Disqualifying Disposition...........................................................         72
DOJ.................................................................................         31
Effective Date......................................................................         27
Effective Time......................................................................         27
Employment Agreements...............................................................         56
Equity Participation Plan...........................................................         61
Exchange Act........................................................................         32
ESOP................................................................................         38
Exchange Agent......................................................................         26
</TABLE>
 
                                       93
<PAGE>
<TABLE>
<S>                                                                                   <C>
Exchange Fund.......................................................................         26
Exchange Ratio......................................................................         17
Executive Disability................................................................         59
Executive Salary Continuation Agreements............................................         57
FDIC................................................................................         31
Federal Reserve Board...............................................................         42
Florida Stock Purchase Agreement....................................................         77
GAAP................................................................................          5
HFM.................................................................................         18
Hardship Event......................................................................         62
Income Bonus........................................................................         52
Initial Triggering Event............................................................         32
Injunction..........................................................................         28
Insiders............................................................................         67
IRS.................................................................................         39
ISO's...............................................................................         61
KBW.................................................................................         18
Last Trading Price..................................................................         51
Merger..............................................................................         16
MFC.................................................................................         10
NQO's...............................................................................         61
OCC.................................................................................         27
Offshore............................................................................         77
Participant.........................................................................         61
Participant Payment.................................................................         61
Participation Payment Events........................................................         61
Partnerships........................................................................         77
Person..............................................................................         32
Pro Forma Exchange Ratio............................................................          7
PSPR................................................................................         77
Purchasers..........................................................................         77
Reference Package...................................................................         75
Registration Statement..............................................................         90
Replacement Option..................................................................         17
Reporting Rules.....................................................................         68
Riegle-Neal Act.....................................................................         30
ROE.................................................................................         52
Rule 145............................................................................         34
RVNB................................................................................          8
Salary Continuation Agreement.......................................................         54
Salary Termination Events...........................................................         53
Sale of BOC.........................................................................         53
Sale of BOC Bonus...................................................................         53
SARs................................................................................         50
SBA.................................................................................      2, 43
SBA Loan Growth Bonus...............................................................         52
SEC.................................................................................         90
Securities Act......................................................................         90
Significant Subsidiary..............................................................         33
State Board.........................................................................         77
Stated Termination Date.............................................................         69
</TABLE>
 
                                       94
<PAGE>
<TABLE>
<S>                                                                                   <C>
Stock Awards........................................................................         69
Stock Purchase Agreement............................................................         77
Stock Purchase Plan.................................................................         38
Subsequent Triggering Event.........................................................         33
Subsidiary..........................................................................         33
Superior Proposal...................................................................         28
Surviving Corporation...............................................................         16
Term Date...........................................................................         74
Term Participating Preferred Stock..................................................         74
Termination Fee.....................................................................         32
Termination Lump Sum................................................................         53
Treasury Stock......................................................................         16
Triggering Event....................................................................         33
US Bank.............................................................................         16
USB.................................................................................          1
USB Common Stock....................................................................         16
USB Shareholders....................................................................         26
USB Subsidiary......................................................................         32
USBC................................................................................         10
Year 2000...........................................................................          6
</TABLE>
 
                                       95
<PAGE>
                                   APPENDIX A
 
                      AGREEMENT AND PLAN OF REORGANIZATION
                         DATED AS OF FEBRUARY 18, 1999
                            AS AMENDED AND RESTATED
                                     AS OF
                                 MARCH 26, 1999
                                    BETWEEN
                                  U.S. BANCORP
                                      AND
                                BANK OF COMMERCE
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                 PAGE
                                                                                           -----------
<C>        <S>                                                                             <C>
RECITALS.................................................................................         A-1
 
                                              ARTICLE I
 
CERTAIN DEFINITIONS
 
     1.01  Certain Definitions...........................................................         A-1
 
                                              ARTICLE II
 
THE MERGER
 
     2.01  The Merger....................................................................         A-5
     2.02  Effective Date and Effective Time.............................................         A-5
     2.03  Merger Agreement..............................................................         A-5
 
                                             ARTICLE III
 
CONSIDERATION; EXCHANGE PROCEDURES
 
     3.01  Reorganization Consideration..................................................         A-6
     3.02  Rights as Shareholders; Stock Transfers.......................................         A-6
     3.03  Fractional Shares.............................................................         A-6
     3.04  Exchange Procedures...........................................................         A-6
     3.05  Anti-Dilution Provisions......................................................         A-8
     3.06  Options.......................................................................         A-8
 
                                              ARTICLE IV
 
ACTIONS PENDING ACQUISITION
 
     4.01  Forbearances of Bank..........................................................         A-9
     4.02  Forbearances of USB...........................................................        A-11
 
                                              ARTICLE V
 
REPRESENTATIONS AND WARRANTIES
 
     5.01  Disclosure Schedules..........................................................        A-12
     5.02  Standard......................................................................        A-12
     5.03  Representations and Warranties of Bank........................................        A-12
     5.04  Representations and Warranties of USB.........................................        A-21
</TABLE>
 
                                       i
<PAGE>
<TABLE>
<CAPTION>
                                                                                                 PAGE
                                                                                           -----------
<C>        <S>                                                                             <C>
                                              ARTICLE VI
 
COVENANTS
 
     6.01  Reasonable Best Efforts.......................................................        A-23
     6.02  Shareholder Approval..........................................................        A-24
     6.03  Registration Statement........................................................        A-24
     6.04  Press Releases................................................................        A-25
     6.05  Access; Information...........................................................        A-25
     6.06  Acquisition Proposals.........................................................        A-25
     6.07  Affiliate Agreements..........................................................        A-26
     6.08  Stock Exchange Listing........................................................        A-26
     6.09  Regulatory Applications.......................................................        A-26
     6.10  Indemnification; Directors' and Officers' Insurance...........................        A-27
     6.11  Benefit Plans.................................................................        A-28
     6.12  Notification of Certain Matters...............................................        A-28
     6.13  Certain Loans and Related Matters.............................................        A-28
     6.14  Monthly Financial Statements..................................................        A-29
     6.15  Updated Disclosure Schedule...................................................        A-29
 
                                             ARTICLE VII
 
CONDITIONS TO CONSUMMATION OF THE MERGER
 
     7.01  Conditions to Each Party's Obligation to Effect the Merger....................        A-29
     7.02  Conditions to Obligation of Bank..............................................        A-30
     7.03  Conditions to Obligation of USB...............................................        A-30
 
                                             ARTICLE VIII
 
TERMINATION
 
     8.01  Termination...................................................................        A-31
     8.02  Effect of Termination and Abandonment.........................................        A-31
     8.03  Termination Fee...............................................................        A-31
 
                                              ARTICLE IX
 
MISCELLANEOUS
 
     9.01  Survival......................................................................        A-33
     9.02  Waiver; Amendment.............................................................        A-33
     9.03  Counterparts..................................................................        A-33
     9.04  Governing Law.................................................................        A-33
     9.05  Expenses......................................................................        A-33
     9.06  Notices.......................................................................        A-33
     9.07  Entire Understanding; No Third Party Beneficiaries............................        A-34
     9.08  Interpretation; Effect........................................................        A-34
     9.09  Enforcement of Agreement......................................................        A-34
</TABLE>
 
EXHIBIT A    Form of Merger Agreement
EXHIBIT B    Form of Affiliate Agreement
 
                                       ii
<PAGE>
AGREEMENT AND PLAN OF REORGANIZATION, dated as of February 18, 1999, as amended
and restated as of March 26, 1999 (as so amended and restated, the "Agreement")
between U.S. BANCORP ("USB") and BANK OF COMMERCE ("Bank").
 
                                    RECITALS
 
A.  BANK.  Bank is a California chartered bank, having its principal place of
business in San Diego, California.
 
B.  USB.  USB is a Delaware corporation, having its principal place of business
in Minneapolis, Minnesota.
 
C.  US BANK.  USB has a wholly owned subsidiary named U.S. Bank National
Association ("US Bank") organized under the laws of the United States.
 
D.  INTENTIONS OF THE PARTIES.  It is the intention of the parties to this
Agreement that this Agreement shall constitute a plan of reorganization and that
the business combination contemplated hereby be treated as a "reorganization"
under Section 368 of the Internal Revenue Code of 1986 as amended (the "Code").
 
E.  BOARD ACTION.  The respective Boards of Directors of USB, US Bank, and Bank
have determined that it is in the best interests of their respective companies
and their shareholders to consummate the strategic business combination
transaction provided for herein.
 
NOW, THEREFORE, in consideration of the premises and of the mutual covenants,
representations, warranties and agreements contained herein, the parties agree
as follows:
 
                                   ARTICLE I
                              CERTAIN DEFINITIONS
 
1.01  CERTAIN DEFINITIONS.  The following terms are used in this Agreement with
the meanings set forth below:
 
"Acquisition Transaction" has the meaning set forth in Section 8.03(b)(i).
 
"Affiliate Agreements" has the meaning set forth in Section 6.07.
 
"Agreement" means this Agreement, as amended or modified from time to time in
accordance with Section 9.02.
 
"Average Stock Price" has the meaning set forth in Section 3.01(a).
 
"Bank" means Bank of Commerce, a California chartered bank.
 
"Bank Articles" means the Articles of Incorporation of Bank.
 
"Bank Board" means the Board of Directors of Bank.
 
"Bank By-Laws" means the By-Laws of Bank.
 
"Bank Common Stock" means the common stock, no par value per share, of Bank.
 
"Bank Meeting" has the meaning set forth in Section 6.02.
 
"Bank Plans" means the Bank Stock Option Plan and the Bank Stock Plan.
 
"Bank Preferred Stock" has the meaning set forth in Section 5.03(b).
 
"Bank Regulatory Reports" has the meaning set forth in Section 5.03(k)(iii).
 
                                      A-1
<PAGE>
"Bank's Knowledge" shall mean the actual knowledge of Bank's Chief Executive
Officer, Senior Executive Vice President or any Executive Vice President or
Senior Vice President.
 
"Bank Stock Option" has the meaning set forth in Section 3.06(a).
 
"Bank Stock Option Plan" means Bank's 1989 Stock Option Plan.
 
"Bank Stock Plan" means Bank's 1998 Stock Plan.
 
"Benefit Plans" has the meaning set forth in Section 5.03(p)(i).
 
"Business Combination" has the meaning set forth in Section 3.05.
 
"CGCL" means the California General Corporation Law.
 
"Code" has the meaning set forth in the recitals.
 
"Confidentiality Agreement" has the meaning set forth in Section 6.05(b).
 
"Costs" has the meaning set forth in Section 6.10(a).
 
"Daily Per Share Prices" has the meaning set forth in Section 3.01(a).
 
"DFI" means the California Department of Financial Institutions.
 
"Disclosure Schedule" has the meaning set forth in Section 5.01.
 
"Dissenting Shares" has the meaning set forth in Section 3.04(f).
 
"DPC shares" shall mean shares of Bank Common Stock held as a result of debts
previously contracted in good faith.
 
"D Warrant" shall mean a Bank "D" Common Stock Purchase Warrant.
 
"Effective Date" means the date on which the Effective Time occurs, as provided
for in Section 2.02.
 
"Effective Time" means the effective time of the Merger, as provided for in
Section 2.02.
 
"Employees" has the meaning set forth in Section 5.03(p)(i).
 
"Environmental Law" has the meaning set forth in Section 5.03(s).
 
"ERISA" means the Employee Retirement Income Security Act of 1974, as amended.
 
"ERISA Affiliate" has the meaning set forth in Section 5.03(p)(iv).
 
"Exchange Act" means the Securities Exchange Act of 1934, as amended, and the
rules and regulations thereunder.
 
"Exchange Agent" has the meaning set forth in Section 3.04(a).
 
"Exchange Fund" has the meaning set forth in Section 3.04(a).
 
"Exchange Ratio" has the meaning set forth in Section 3.01(a).
 
"FDIC" means the Federal Deposit Insurance Corporation.
 
"Fee Termination Event" has the meaning set forth in Section 8.03(a).
 
"Financial Statements" has the meaning set forth in Section 5.03(g)(ii).
 
"FRB" means the Federal Reserve Board.
 
"GAAP" has the meaning set forth in Section 5.03(g)(ii).
 
                                      A-2
<PAGE>
"Governmental Authority" means any court, administrative agency or commission or
other federal, state or local governmental authority or instrumentality.
 
"Hazardous Substance" has the meaning set forth in Section 5.03(s).
 
"Indemnified Party" has the meaning set forth in Section 6.10(a).
 
"Initial Triggering Event" has the meaning set forth in Section 8.03(b).
 
"Injunction" has the meaning set forth in Section 7.01(c).
 
"Leases" has the meaning set forth in Section 5.03(r)(ii).
 
"Liabilities" has the meaning set forth in Section 5.03(i).
 
"Liens" means any charge, mortgage, pledge, security interest, restriction,
claim, lien or encumbrance other than liens for taxes not yet due and payable.
 
"Loans" has the meaning set forth in Section 5.03(w)(i).
 
"Material Adverse Effect" means, with respect to USB or Bank, any effect that
 
    (i) is material and adverse to the financial position, results of operations
or business of USB and its Subsidiaries taken as a whole or Bank, respectively,
or
 
    (ii) would materially impair the ability of either USB or Bank to perform
its obligations under this Agreement or otherwise materially threaten or
materially impede the consummation of the Merger and the other transactions
contemplated by this Agreement;
 
provided, however, that Material Adverse Effect shall not be deemed to include
the impact of
 
    (a) changes in banking and similar laws of general applicability or
interpretations thereof by courts or governmental authorities,
 
    (b) changes in GAAP or regulatory accounting requirements applicable to
banks and their holding companies generally,
 
    (c) any expenses incurred by a party hereto in connection with this
Agreement or the transactions contemplated hereby, or
 
    (d) any action or omission of Bank or USB or any of its Subsidiaries taken
with the prior written consent of the other party hereto.
 
"Merger" has the meaning set forth in Section 2.01(a).
 
"Millennium Compliant" has the meaning set forth in Section 5.03(aa).
 
"Multi-Employer Plans" has the meaning set forth in Section 5.03(p)(ii).
 
"New Certificate" has the meaning set forth in Section 3.04(a).
 
"OCC" means the Office of the Comptroller of the Currency.
 
"Old Certificate" has the meaning set forth in Section 3.04(a).
 
"Pension Plan" has the meaning set forth in Section 5.03(p)(ii).
 
"Person" means any individual, bank, corporation, partnership, association,
joint-stock company, business trust or other entity or unincorporated
organization.
 
"Plans" has the meaning set forth in Section 5.03(p)(ii).
 
"Previously Disclosed" by a party shall mean information set forth in its
Disclosure Schedule.
 
                                      A-3
<PAGE>
"Proxy Statement" has the meaning set forth in Section 6.03(a).
 
"Registration Statement" has the meaning set forth in Section 6.03(a).
 
"Regulatory Authority" has the meaning set forth in Section 5.03(k)(i).
 
"Regulatory Documents" means documents filed with the SEC, the FRB, the FDIC,
the OCC or the DFI, as applicable, of the types referred to in Section 5.03(g)
and Section 5.04(f)(i).
 
"Replacement Option" has the meaning set forth in Section 3.06(a).
 
"Representatives" means, with respect to any Person, such Person's directors,
officers, employees, legal or financial advisors or any representatives of such
legal or financial advisors.
 
"Rights" means, with respect to any Person, securities or obligations
convertible into or exercisable or exchangeable for, or giving any person any
right to subscribe for or acquire, or any options, calls or commitments relating
to, or any stock appreciation right or other instrument the value of which is
determined in whole or in part by reference to the market price or value of,
shares of capital stock of such Person.
 
"SEC" means the Securities and Exchange Commission.
 
"Securities Act" means the Securities Act of 1933, as amended, and rules and
regulations thereunder.
 
"Subsequent Triggering Event" has the meaning set forth in Section 8.03(c).
 
"Subsidiary" and "Significant Subsidiary" have the meanings ascribed to them in
Rule 1-02 of Regulation S-X of the SEC.
 
"Superior Proposal" has the meaning set forth in Section 6.06.
 
"Surviving Corporation" has the meaning set forth in Section 2.01(a).
 
"Takeover Proposal" has the meaning set forth in Section 6.06.
 
"Tax" and "Taxes" means all federal, state, local or foreign taxes, charges,
fees, levies or other assessments, however denominated, including, without
limitation, all net income, gross income, gains, gross receipts, sales, use, ad
valorem, goods and services, capital, production, transfer, franchise, windfall
profits, license, withholding, payroll, employment, disability, employer health,
excise, estimated, severance, stamp, occupation, property, environmental,
unemployment or other taxes, custom duties, fees, assessments or charges of any
kind whatsoever, together with any interest and any penalties, additions to tax
or additional amounts imposed by any taxing authority.
 
"Tax Returns" means any return, amended return or other report (including
elections, declarations, disclosures, schedules, estimates and information
returns) required to be filed with respect to any Tax.
 
"Termination Fee" has the meaning set forth in Section 8.03(a).
 
"Treasury Stock" shall mean shares of Bank Common Stock held by Bank or by USB
or any of its Subsidiaries, in each case other than Trust Account Shares and DPC
Shares.
 
"Triggering Event" has the meaning set forth in Section 8.03(d).
 
"Trust Account Shares" shall mean shares of Bank Common Stock held in a
fiduciary (including custodial or agency) capacity.
 
"USB" has the meaning set forth in the preamble to this Agreement.
 
"US Bank" has the meaning set forth in the Recitals to this Agreement.
 
"USB Board" means the Board of Directors of USB.
 
                                      A-4
<PAGE>
"USB Common Stock" means the common stock, $1.25 par value per share, of USB.
 
"USB Preferred Stock" has the meaning set forth in Section 5.04(b).
 
"USB's Stock Exchange" means the New York Stock Exchange.
 
"USB Stock Reserves" has the meaning set forth in Section 5.04(b).
 
"USB Subsidiary" has the meaning set forth in Section 8.03(b)(i).
 
                                   ARTICLE II
                                   THE MERGER
 
2.01  THE MERGER.
 
    (a)  THE SURVIVING CORPORATION.  At the Effective Time, Bank shall merge
with and into US Bank (the "Merger"), the separate corporate existence of Bank
shall cease and US Bank shall survive and continue to exist as a national
banking association formed under the laws of the United States (US Bank, as the
surviving corporation in the Merger, sometimes being referred to herein as the
"Surviving Corporation").
 
    (b)  EFFECTIVE DATE OF MERGER.  Subject to the satisfaction or waiver of the
conditions set forth in Article VII, the Merger shall become effective in
accordance with the procedures adopted by the OCC, implementing 12 C.F.R.
Section 5.33.
 
    (c)  ARTICLES OF ASSOCIATION AND BY-LAWS.  The articles of association and
by-laws of the Surviving Corporation immediately after the Merger shall be those
of US Bank as in effect immediately prior to the Effective Time.
 
    (d)  DIRECTORS AND OFFICERS OF THE SURVIVING CORPORATION.  The directors and
officers of the Surviving Corporation immediately after the Merger shall be the
directors and officers of US Bank immediately prior to the Effective Time, until
such time as their successors shall be duly elected and qualified.
 
    (e)  NAME.  Effective immediately upon consummation of the merger, the name
of the Surviving Corporation shall be "Bank of Commerce, National Association."
 
2.02  EFFECTIVE DATE AND EFFECTIVE TIME.  On such date as USB selects (and
promptly provides notice thereof to Bank), which shall be within ten days after
the last to occur of the expiration of all applicable waiting periods in
connection with approvals of Governmental Authorities and the receipt of all
approvals of Governmental Authorities and all conditions to the consummation of
the Merger (other than those conditions that relate to actions to be taken at
the closing) are satisfied or waived (or, at the election of USB, on the last
business day of the month in which such tenth day occurs or, if such tenth day
occurs on one of the last five business days of such month, on the last business
day of the succeeding month), or on such earlier or later date as may be agreed
in writing by the parties, the Merger Agreement shall be executed in accordance
with all appropriate legal requirements and shall be filed as required by law,
and the Merger provided for herein shall become effective upon such filing or on
such date as may be specified in the Merger Agreement. The date of such filing
or such later effective date is herein called the "Effective Date". The
"Effective Time" of the Merger shall be the time of such filing or as set forth
in such Merger Agreement.
 
2.03  MERGER AGREEMENT.  Bank and US Bank shall enter into a Merger Agreement in
substantially the form of Exhibit A.
 
                                      A-5
<PAGE>
                                  ARTICLE III
                       CONSIDERATION; EXCHANGE PROCEDURES
 
3.01  REORGANIZATION CONSIDERATION.  Subject to the provisions of this
Agreement, at the Effective Time, automatically by virtue of the Merger and
without any action on the part of any Person:
 
    (a)  OUTSTANDING BANK COMMON STOCK.  Each share of Bank Common Stock,
excluding Treasury Stock, issued and outstanding immediately prior to the
Effective Time shall be converted, subject to Section 3.05, into a number of
shares of USB's Common Stock, such number to be determined by reference to the
ratio provided below (the "Exchange Ratio"). If the Average Stock Price (as
hereinafter defined) is:
 
        (i) greater than $40.00, the Exchange Ratio shall be equal to the
    quotient obtained by dividing 24.00 by the Average Stock Price;
 
        (ii) equal to or greater than $30.00 but less than or equal to $40.00,
    the Exchange Ratio shall be fixed at .60; or
 
       (iii) less than $30.00, the Exchange Ratio shall be equal to the quotient
    obtained by dividing 18.00 by the Average Stock Price.
 
"Average Stock Price" means the average of the Daily Per Share Prices (as
hereinafter defined) for the twenty consecutive trading days ending on (and
including) the third trading day prior to the Effective Date. The "Daily Per
Share Price" for any trading day means the closing price per share of USB Common
Stock (as reported in USB's Stock Exchange Composite Transaction Tape) for that
day.
 
    (b)  OUTSTANDING USB COMMON STOCK.  Each share of USB Common Stock issued
and outstanding immediately prior to the Effective Time shall remain issued and
outstanding and unaffected by the Merger.
 
    (c)  OUTSTANDING US BANK COMMON STOCK.  Each share of common stock of US
Bank issued and outstanding immediately prior to the Effective Time shall remain
outstanding and unaffected and shall constitute all of the then-issued and
outstanding shares of capital stock of the Surviving Corporation.
 
3.02  RIGHTS AS SHAREHOLDERS; STOCK TRANSFERS.  At the Effective Time, holders
of Bank Common Stock shall cease to be, and shall have no rights as,
shareholders of Bank, other than to receive any dividend or other distribution
with respect to Bank Common Stock with a record date occurring prior to the
Effective Date and the consideration provided under this Article III. After the
Effective Time, there shall be no transfers on the stock transfer books of Bank
or the Surviving Corporation of shares of Bank Common Stock.
 
3.03  FRACTIONAL SHARES.  Notwithstanding any other provision hereof, no
fractional shares of USB Common Stock and no certificates or scrip therefor, or
other evidence of ownership thereof, will be issued in the Merger; instead, USB
shall pay to each holder of Bank Common Stock who would otherwise be entitled to
a fractional share of USB Common Stock (after taking into account all Old
Certificates delivered by such holder) an amount in cash (without interest)
determined by multiplying such fraction by the product of (i) the Average Stock
Price times (ii) the Exchange Ratio, as determined by Section 3.01(a).
 
3.04  EXCHANGE PROCEDURES.
 
    (a)  DEPOSIT OF EXCHANGE FUND.  At or prior to the Effective Time, USB shall
deposit, or shall cause to be deposited, with such bank or trust company as USB
shall elect, subject to the approval of Bank, which approval may not be
unreasonably withheld (in such capacity, the "Exchange Agent"), for the benefit
of the holders of certificates formerly representing shares of Bank Common Stock
("Old Certificates"), for exchange in accordance with this Article III,
certificates representing the shares of
 
                                      A-6
<PAGE>
USB Common Stock and the cash in lieu of fractional shares ("New Certificates")
(such cash and New Certificates, together with any dividends or distributions
with a record date occurring after the Effective Date with respect thereto
(without any interest on any such cash, dividends or distributions) being
hereinafter referred to as the "Exchange Fund") to be paid pursuant to this
Article III in exchange for outstanding shares of Bank Common Stock.
 
    (b)  EXCHANGE OF CERTIFICATES.  As soon as practicable after the Effective
Date, and in any event no later than 10 business days after the Effective Date,
USB shall send or cause to be sent to each former holder of record of shares of
Bank Common Stock immediately prior to the Effective Time, a form letter of
transmittal (which shall specify that delivery shall be effected, and risk of
loss and title to the Old Certificates shall pass, only upon delivery of the Old
Certificates to the Exchange Agent) and instructions for use in effecting the
surrender of the Old Certificates in exchange for the New Certificates
representing the shares of USB Common Stock and the cash in lieu of fractional
shares into which the shares of Bank Common Stock represented by such Old
Certificates shall have been converted pursuant to this Agreement. Bank shall
have the right to review both the letter of transmittal and the instructions
prior to the Effective Time and provide reasonable comments thereon. USB shall
cause the New Certificates representing the shares of USB Common Stock into
which shares of a shareholder's Bank Common Stock are converted at the Effective
Time and/or any check in respect of any fractional share interests or dividends
or distributions which such person shall be entitled to receive to be delivered
to such shareholder upon delivery to the Exchange Agent of Old Certificates
representing such shares of Bank Common Stock (or an affidavit of lost
certificate and, if required by the Exchange Agent, indemnity reasonably
satisfactory to USB and the Exchange Agent, if any of such certificates are
lost, stolen or destroyed) owned by such shareholder, together with a duly
executed letter of transmittal. No interest will be paid on any such cash to be
paid in lieu of fractional share interests or in respect of dividends or
distributions which any such person shall be entitled to receive pursuant to
this Article III upon such delivery. In the event of a transfer of ownership of
any shares of Bank Common Stock not registered in the transfer records of Bank,
the exchange described in this Section 3.04(b) may nonetheless be effected and a
check for the cash to be paid in lieu of fractional shares may be issued to the
transferee if the Old Certificate representing such Bank Common Stock is
presented to the Exchange Agent, accompanied by documents sufficient, in the
discretion of USB and the Exchange Agent, (i) to evidence and effect such
transfer but for the provisions of Section 3.02 hereof and (ii) to evidence that
all applicable stock transfer and other taxes have been paid.
 
    (c)  UNCLAIMED CERTIFICATES.  If Old Certificates are not surrendered or the
consideration therefor is not claimed prior to the date on which such
consideration would otherwise escheat to or become the property of any
governmental unit or agency, the unclaimed consideration shall, to the extent
permitted by abandoned property and any other applicable law, become the
property of USB (and to the extent not in its possession shall be paid over to
USB), free and clear of all claims or interest of any person previously entitled
to such claims. Notwithstanding the foregoing, neither the Exchange Agent nor
any party hereto shall be liable to any former holder of Bank Common Stock for
any amount properly delivered to a public official pursuant to applicable
abandoned property, escheat or similar laws.
 
    (d)  DISTRIBUTIONS IN RESPECT OF UNCLAIMED CERTIFICATES.  No dividends or
other distributions with respect to USB Common Stock with a record date
occurring after the Effective Time shall be paid to the holder of any
unsurrendered Old Certificate representing shares of Bank Common Stock converted
in the Merger into the right to receive shares of such USB Common Stock until
the holder thereof shall be entitled to receive New Certificates in exchange
therefor in accordance with the procedures set forth in this Section 3.04, and
no such shares of USB Common Stock shall be eligible to vote until the holder of
Old Certificates is entitled to receive New Certificates in accordance with the
procedures set forth in this Section 3.04. After becoming so entitled in
accordance with this Section 3.04, the record holder thereof also shall be
entitled to receive any such dividends or other distributions, without any
 
                                      A-7
<PAGE>
interest thereon, which theretofore had become payable with respect to shares of
USB Common Stock such holder had the right to receive upon surrender of the Old
Certificate.
 
    (e)  DISPOSITION OF UNCLAIMED EXCHANGE FUND.  Any portion of the Exchange
Fund that remains unclaimed by the shareholders of Bank for six months after the
Effective Time shall be returned by the Exchange Agent to USB. Any shareholders
of Bank who have not theretofore complied with this Article III shall thereafter
look only to USB for payment of the shares of USB Common Stock, cash in lieu of
any fractional shares, and unpaid dividends and distributions on USB Common
Stock deliverable in respect of each share of Bank Common Stock such shareholder
holds as determined pursuant to this Agreement, in each case, without any
interest thereon.
 
    (f)  DISSENTING SHARES.  Notwithstanding anything in this Agreement to the
contrary, shares of Bank Common Stock which are outstanding immediately prior to
the Effective Time and which constitute "dissenting shares" as defined in
Section 1300 of the CGCL (such shares are referred to herein as "Dissenting
Shares") shall not be converted into shares of USB Common Stock but, instead,
the holders thereof shall be entitled to receive payment of the fair market
value of such Dissenting Shares in accordance with the provisions of Sections
1300-1312 ("Sections 1300 et seq.") of the CGCL; provided, however, that (i) if
any holder of Dissenting Shares shall subsequently withdraw, with the consent of
the Surviving Corporation, his or her demand for purchase of such shares, or
(ii) if any holder of Dissenting Shares fails to establish or otherwise loses
his or her entitlement to payment of the fair market value of such shares as
provided in Sections 1300 et seq. such holder or holders (as the case may be)
shall not be entitled to receive payment of the fair market value of such shares
of Bank Common Stock as contemplated by Sections 1300 et seq., and each of such
shares shall thereupon be deemed to have been converted into shares of USB
Common Stock, without any interest thereon, as provided in Article III hereof.
 
3.05  ANTI-DILUTION PROVISIONS.  In the event USB (i) changes (or establishes a
record date for changing) the number of shares of USB Common Stock issued and
outstanding prior to the Effective Date as a result of a stock split, stock
dividend, recapitalization or similar transaction with respect to the
outstanding USB Common Stock or (ii) pays or makes an extraordinary dividend or
distribution in respect of USB Common Stock (other than a distribution referred
to in clause (i) of this sentence) and, in either case, the record date therefor
shall be prior to the Effective Date, the Exchange Ratio shall be
proportionately adjusted. Regular quarterly cash dividends and increases thereon
shall not be considered extraordinary for purposes of the preceding sentence.
If, between the date hereof and the Effective Time, USB shall consolidate with
or into any other corporation (a "Business Combination") and the terms thereof
shall provide that USB Common Stock shall be converted into or exchanged for the
shares of any other corporation or entity, then provision shall be made as part
of the terms of such Business Combination so that shareholders of Bank who would
be entitled to receive shares of USB Common Stock pursuant to this Agreement
shall be entitled to receive, in lieu of each share of USB Common Stock issuable
to such shareholders as provided herein, the same kind and amount of securities
or assets as shall be distributable upon such Business Combination with respect
to one share of USB Common Stock.
 
3.06  OPTIONS.
 
    (a) At the Effective Time, each outstanding option to purchase shares of
Bank Common Stock under the Bank Stock Option Plan and Bank Stock Plan and each
D Warrant (each, a "Bank Stock Option"), whether vested or unvested, shall be
converted into an option or warrant, as appropriate, to acquire, on the same
terms and conditions as were applicable under such Bank Stock Option, the number
of shares of USB Common Stock equal to (a) the number of shares of Bank Common
Stock subject to the Bank Stock Option, multiplied by (b) the Exchange Ratio
(such product rounded down to the nearest whole number) (each new option or
warrant is hereinafter referred to as "Replacement Option"), at an exercise
price per share (rounded up to the nearest whole cent) equal to (y) the
 
                                      A-8
<PAGE>
aggregate exercise price for the shares of Bank Common Stock which were
purchasable pursuant to such Bank Stock Option divided by (z) the number of full
shares of USB Common Stock subject to such Replacement Option in accordance with
the foregoing. Notwithstanding the foregoing, each Bank Stock Option which is
intended to be an "incentive stock option" (as defined in Section 422 of the
Code) shall be adjusted in accordance with the requirements of Section 424 of
the Code. At or prior to the Effective Time, Bank shall take all action, if any,
necessary with respect to the Bank Plans to permit the replacement of the
outstanding Bank Stock Options by USB pursuant to this Section and, in Bank's
discretion, to prevent the termination of Bank Stock Options if as a result of
the completion of the Merger, such options could terminate. At the Effective
Time, USB shall assume the Bank Plans; provided, that such assumption shall be
only in respect of the Replacement Options resulting from the conversion of Bank
Stock Options issued under such plans and that USB shall have no obligation with
respect to any awards under the Bank Plans other than the Replacement Options
and shall have no obligation to make any additional grants or awards under such
assumed Bank Plans.
 
    (b) Prior to the Effective Time, USB shall reserve for issuance the number
of shares of USB Common Stock necessary to satisfy USB's obligations under this
Section 3.06. Promptly after the Effective Time (but in no event later than five
business days thereafter), USB shall file with the SEC a registration statement
or registration statements on an appropriate form under the Securities Act with
respect to the shares of USB Common Stock subject to Replacement Options, and
shall use its reasonable best efforts to maintain the current status of the
prospectus contained therein and to comply with applicable state securities or
"blue sky" laws for so long as such options remain outstanding. Bank and USB
shall take all such steps as may be required to cause the transactions
contemplated by this Section 3.06 and any other dispositions of Bank equity
securities (including derivative securities) or acquisitions of USB equity
securities (including derivative securities) in connection with this Agreement
by each individual who is a director or executive officer of Bank exempt under
Rule 16b-3 promulgated under the Securities Exchange Act of 1934, as amended,
and as adopted by the FRB pursuant to 12 C.F.R. part 208 (as amended), such
steps to be taken in accordance with the No-Action Letter dated January 12,
1999, issued by the SEC to Skadden, Arps, Slate, Meagher & Flom LLP.
 
                                   ARTICLE IV
                          ACTIONS PENDING ACQUISITION
 
4.01  FORBEARANCES OF BANK.  From the date hereof until the Effective Time,
except as expressly contemplated by this Agreement, without the prior written
consent of USB, Bank will not:
 
    (a)  ORDINARY COURSE.  Conduct the business of Bank other than in the
ordinary and usual course in accordance in all material respects with all
applicable laws, rules and regulations and past practice, or, to the extent
consistent therewith, fail to use reasonable efforts to preserve intact the
business organizations and assets and maintain its rights, franchises and
existing relations with customers, suppliers, employees and business associates.
 
    (b)  DELAY.  Willfully take any action that would materially adversely
affect or delay the ability of Bank to perform any of their obligations under
this Agreement on a timely basis.
 
    (c)  CAPITAL STOCK.  Other than pursuant to the Rights Previously Disclosed
and outstanding on the date hereof, and other than granting New Stock Options
for up to 25,000 shares of Bank Common Stock per calendar month that may be
issued in the ordinary course of business as Previously Disclosed, (i) issue,
sell or otherwise permit to become outstanding, or authorize the creation of,
any additional shares of Bank Common Stock or any Rights, (ii) enter into any
agreement with respect to the foregoing, or (iii) permit any additional shares
of Bank Common Stock to become subject to new grants of employee or director
stock options, other Rights or similar stock-based employee rights.
 
                                      A-9
<PAGE>
    (d)  DIVIDENDS, ETC.  (i) Make, declare, pay or set aside for payment any
dividend on or in respect of, or declare or make any distribution on any shares
of Bank Common Stock other than normal quarterly dividends not in excess of $.05
per share of Bank Common Stock, or (ii) directly or indirectly adjust, split,
combine, redeem, reclassify, purchase or otherwise acquire (except for the
acquisition of DPC Shares and Trust Account Shares), any shares of its capital
stock or any Rights with respect to Bank securities.
 
    (e)  COMPENSATION; EMPLOYMENT AGREEMENTS; ETC.  Enter into or amend or renew
any employment, consulting, severance or similar agreements or arrangements with
any director, officer or employee of Bank, or grant any bonus or any salary or
wage increase or establish or increase any employee benefit (including incentive
or bonus payments), except (i) for normal individual increases in compensation
to employees in the ordinary course of business consistent with past practice,
(ii) for other changes that are required by applicable law, (iii) to satisfy
Previously Disclosed contractual obligations existing as of the date hereof, or
(iv) for grants of awards to newly hired employees consistent with past
practice.
 
    (f)  BENEFIT PLANS.  Except as Previously Disclosed, enter into, establish,
adopt or amend (except (i) as may be required by applicable law, or (ii) to
satisfy Previously Disclosed contractual obligations existing as of the date
hereof to amend the Bank Plans to prevent the termination of Bank Stock Options
if as a result of completion of the Merger, such options could terminate) any
pension, retirement, stock option, stock purchase, savings, profit sharing,
deferred compensation, consulting, bonus, group insurance or other employee
benefit, incentive or welfare contract, plan or arrangement, or any trust
agreement (or similar arrangement) related thereto, in respect of any director,
officer or employee of Bank, or take any action to accelerate the vesting or
exercisability of stock options, restricted stock or other compensation or
benefits payable thereunder, (iii) to increase the number of shares of Bank
Common Stock available for issuance under the Bank Stock Plan by 500,000 or
(iv).
 
    (g)  DISPOSITIONS.  Except as Previously Disclosed, sell, transfer,
mortgage, encumber or otherwise dispose of or discontinue any of its assets,
deposits, business or properties except in the ordinary course of business;
provided, that any such sale, transfer, mortgage, encumbrance or disposition of
any fee interest in real property housing Bank branches, loan offices or offices
engaged in Bank operations shall not be considered in the ordinary course of
business.
 
    (h)  ACQUISITIONS.  Except as Previously Disclosed, acquire (other than by
way of foreclosures or acquisitions of control in a bona fide fiduciary capacity
or in satisfaction of debts previously contracted in good faith, in each case in
the ordinary and usual course of business consistent with past practice) all or
any portion of, the assets, business, deposits or properties of any other entity
except in the ordinary course of business consistent with past practice and in a
transaction that is not material to Bank.
 
    (i)  CAPITAL EXPENDITURES.  Make any capital expenditures other than capital
expenditures in the ordinary course of business consistent with past practice in
amounts not exceeding $100,000 individually or $1,000,000 in the aggregate.
 
    (j)  GOVERNING DOCUMENTS.  Amend the Bank Articles or Bank By-Laws.
 
    (k)  ACCOUNTING METHODS.  Implement or adopt any change in its financial
accounting principles, practices or methods, other than as may be required by
GAAP or regulatory accounting principles.
 
    (l)  CONTRACTS.  Except in the ordinary course of business consistent with
past practice, enter into, terminate or renew any material contract (as defined
in Section 5.03(m)) or amend or modify in any material respect any of its
existing material contracts.
 
    (m)  ADVERSE ACTIONS.
 
        (i) Take any action that would, or would be reasonably likely to,
    prevent or impede the Merger from qualifying as a reorganization within the
    meaning of Section 368 of the Code; or
 
                                      A-10
<PAGE>
        (ii) Knowingly take any action that is intended or is reasonably likely
    to result in (A) any of its representations and warranties set forth in this
    Agreement being or becoming untrue in any material respect at any time at or
    prior to the Effective Time, (B) any of the conditions to the Merger set
    forth in Article VII not being satisfied, or (C) a material violation of any
    provision of this Agreement except, in each case, as may be required by
    applicable law or regulation.
 
    (n)  RISK MANAGEMENT.  Except as required by applicable law or regulation,
implement or adopt any material change in its interest rate and other risk
management policies, procedures or practices.
 
    (o)  INDEBTEDNESS; LIABILITIES.  Incur any indebtedness for borrowed money
or voluntarily incur or become subject to any material liability, in each case
other than in the ordinary course of business consistent with past practice.
 
    (p)  DISCHARGE.  Discharge or satisfy any material lien or encumbrance on
the properties or assets of Bank or pay or cancel any material debt, liability
or claim of Bank or otherwise waive any rights of material value of Bank, except
in the ordinary course of business.
 
    (q)  INSURANCE.  Permit its current insurance policies to be canceled or
terminated or any of the coverage thereunder to lapse, unless simultaneously
with such termination, cancellation or lapse, replacement policies providing
coverages substantially equal to the coverages under the canceled, terminated or
lapsed policies are in full force and effect.
 
    (r)  SETTLEMENTS.  Except as Previously Disclosed, enter into any settlement
or similar agreement with respect to, or take any other significant action with
respect to the conduct of, any action, suit, proceeding, order or investigation
to which Bank becomes a party after the date of this Agreement in excess of
$100,000.
 
    (s)  EXTENSIONS OF CREDIT.  Make any agreements or commitments binding it to
extend credit except in a manner consistent with past practice and in accordance
with Bank's lending policies as previously provided to USB, or make any
agreement or commitment binding it to extend credit for any individual loan in
an amount in excess of $3,500,000.
 
    (t)  LOAN SALES.  Sell loans except in the ordinary course of business;
provided, however, to the extent loan sales exceed those scheduled in the budget
provided to USB but net income for the period does not exceed profit projections
provided to USB for the period such loan sales shall be deemed to be in the
ordinary course of business.
 
    (u)  COMMITMENTS.  Agree or commit to do any of the foregoing.
 
4.02  FORBEARANCES OF USB.  From the date hereof until the Effective Time,
except as expressly contemplated by this Agreement, without the prior written
consent of Bank, USB will not, and will cause each of its Subsidiaries not to:
 
    (a)  DELAY.  Willfully take any action USB knows or should know would
materially adversely affect the ability of Bank, USB or US Bank to perform any
of their obligations on a timely basis under this Agreement.
 
    (b)  ADVERSE ACTIONS.
 
        (i) Take any action that would, or would be reasonably likely to,
    prevent or impede the Merger from qualifying as a reorganization within the
    meaning of Section 368 of the Code; or
 
        (ii) Knowingly take any action that is intended or is reasonably likely
    to result in (A) any of its representations and warranties set forth in this
    Agreement (as of their respective dates) being or becoming untrue in any
    material respect at any time at or prior to the Effective Time, (B) any of
    the conditions to the Merger set forth in Article VII not being satisfied,
    or (C) a material violation of any provision of this Agreement except, in
    each case, as may be required by applicable law or regulation.
 
                                      A-11
<PAGE>
                                   ARTICLE V
                         REPRESENTATIONS AND WARRANTIES
 
5.01  DISCLOSURE SCHEDULES.  On or prior to the date hereof, Bank has delivered
to USB a schedule (the "Disclosure Schedule") setting forth, among other things,
items the disclosure of which is necessary or appropriate either in response to
an express disclosure requirement contained in a provision hereof or as an
exception to one or more representations or warranties contained in Section
5.03; provided, that (a) no such item is required to be set forth in a
Disclosure Schedule as an exception to a representation or warranty if its
absence would not be reasonably likely to result in the related representation
or warranty being deemed untrue or incorrect under the standard established by
Section 5.02, and (b) the mere inclusion of an item in a Disclosure Schedule as
an exception to a representation or warranty shall not be deemed an admission by
a party that such item represents a material exception or fact, event or
circumstance or that such item has had a Material Adverse Effect.
 
5.02  STANDARD.  No representation or warranty of Bank or USB contained in
Section 5.03 or 5.04, respectively, shall be deemed untrue or incorrect for any
purpose under this Agreement, and no party hereto shall be deemed to have
breached a representation or warranty, as a consequence of the existence of any
fact, event or circumstance unless such fact, event or circumstance,
individually or taken together with all other facts, events or circumstances
inconsistent with any representation or warranty contained in Section 5.03 or
5.04 has had or would be reasonably expected to have a Material Adverse Effect
on the party making such representation or warranty; provided, however that the
representations and warranties of Bank contained in Sections 5.03(a), (b), (d),
(e), (h), and (n) and of USB contained in Sections 5.04(a)(i), (c), (d), and (g)
shall be true and correct in all respects without qualification by the standard
set forth in this Section 5.02.
 
5.03  REPRESENTATIONS AND WARRANTIES OF BANK.  Subject to Sections 5.01 and 5.02
and except as Previously Disclosed, Bank hereby represents and warrants to USB:
 
    (a)  ORGANIZATION, STANDING AND AUTHORITY.  Bank is a corporation duly
organized, validly existing and in good standing under the laws of the State of
California. Bank is chartered and in good standing as a bank under the laws of
the State of California. Bank is duly licensed and qualified to do business and
is in good standing in the states of the United States and any foreign
jurisdictions where its ownership or leasing of property or assets or the
conduct of its business requires it to be so licensed and qualified, except
where a failure to be so licensed and qualified would not reasonably be expected
to have a Material Adverse Effect. The copies of the Bank Articles and Bank
By-Laws which have been provided to USB prior to the date of this Agreement are
correct and complete and reflect all amendments made thereto through the date
hereof. True and correct copies of the minute books of Bank have been made
available to USB and fairly and accurately reflect all material corporate action
taken by the board of directors and shareholders of Bank since December 31,
1996.
 
    (b)  BANK COMMON STOCK; SUBSIDIARIES; NO BANK HOLDING COMPANY.  As of the
date of this Agreement, the authorized capital stock of Bank consists solely of
50,000,000 shares of Bank Common Stock and 1,000,000 shares of preferred stock
(the "Bank Preferred Stock"). As of January 25, 1999, there were 14,811,623
shares of Bank Common Stock and no shares of Bank Preferred Stock issued and
outstanding. As of the date hereof no shares of Bank Common Stock were held in
treasury by Bank or otherwise owned by Bank. As of the date of this Agreement,
no shares of Bank Common Stock were reserved for issuance, except that (i) a
total of 1,028,802 shares of Bank Common Stock were reserved for issuance upon
the exercise of outstanding stock options pursuant to the Bank Plans, (ii) a
total of 655,351 shares of Bank Common Stock were reserved for issuance under
stock options that may be granted pursuant to the Bank Plans, and (iii) 588,800
shares of Bank Common Stock were reserved for issuance upon exercise of D
Warrants. Bank has provided or made available to USB true and correct copies of
all such agreements, arrangements (including all stock option plans) or
commitments referred to above. All of the issued and outstanding shares of Bank
Common Stock have
 
                                      A-12
<PAGE>
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 as referred to above, Bank
does not have any Rights issued or outstanding with respect to any shares of
Bank Common Stock or any other equity securities of Bank. Other than as
described above, Bank has not authorized or issued any indebtedness, instrument,
contract or other arrangement that could be treated as equity of the Bank under
United States federal income tax law. Additionally, Bank has no outstanding
stock, indebtedness, instrument, contract or arrangement that Bank has treated
as debt for United States federal income tax purposes but not debt for other
purposes. The Bank has no subsidiaries, and to Bank's Knowledge, Bank is not
owned by a bank holding company as defined under the Bank Holding Company Act of
1956, as amended.
 
    (c)  OWNERSHIP OF OTHER SECURITIES.  Other than in a bona fide fiduciary
capacity or in satisfaction of a debt previously contracted, Bank does not own
beneficially, directly or indirectly, any equity securities or similar interests
of any Person, or any interest in a partnership or joint venture of any kind.
 
    (d)  CORPORATE POWER.  Bank has the corporate power and authority to carry
on its business as it is now being conducted and to own all its properties and
assets; and Bank has the corporate power and authority to execute, deliver and
perform its obligations under this Agreement and to consummate the transactions
contemplated hereby and thereby.
 
    (e)  CORPORATE AUTHORITY.  Subject in the case of this Agreement to receipt
of the requisite approval by the holders of two-thirds of the outstanding shares
of Bank Common Stock entitled to vote thereon (which is the only shareholder
vote required thereon), this Agreement and the transactions contemplated hereby
have been authorized by all necessary corporate action of Bank and the Bank
Board on or prior to the date hereof and no other corporate proceedings on the
part of Bank are necessary to authorize this Agreement and the transactions
contemplated hereby. This Agreement is a valid and legally binding obligation of
Bank, enforceable in accordance with its terms (except as enforceability may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium,
fraudulent transfer and similar laws of general applicability relating to or
affecting creditors' rights or by general equity principles). The Bank Board has
received the opinion of Keefe, Bruyette & Woods, Inc. to the effect that as of
the date hereof the Exchange Ratio to be received by the holders of Bank Common
Stock in the Merger is fair to the holders of Bank Common Stock from a financial
point of view.
 
    (f)  REGULATORY APPROVALS; NO DEFAULTS.
 
        (i) No consents or approvals of, or filings or registrations with, any
    Governmental Authority or with any third party are required to be made or
    obtained by Bank in connection with the execution, delivery or performance
    by Bank of this Agreement or to consummate the Merger except for (A) filings
    of applications or notices with federal banking authorities, the DFI and
    state regulatory authorities in states in which Bank operates loan
    production offices, (B) filings with the SEC and state securities
    authorities and the approval of this Agreement by the shareholders of Bank,
    and (C) the filing of the Merger Agreement together with certificates of
    officers of the constituent corporations with the OCC. As of the date
    hereof, Bank is not aware of any reason why the approvals set forth in
    Section 7.01(b) will not be received.
 
        (ii) Subject to receipt of the regulatory approvals referred to in the
    preceding paragraph, and the expiration of related waiting periods, and
    required filings under federal and state securities laws, the execution,
    delivery and performance of this Agreement and the consummation of the
    transactions contemplated hereby and thereby do not and will not:
 
           (A) constitute a breach or violation of, or a default under, or give
       rise to any Lien, any acceleration of remedies or any right of
       termination under, any law, rule or regulation or any
 
                                      A-13
<PAGE>
       judgment, decree, order, governmental permit or license, or agreement,
       arrangement, understanding, indenture or instrument of Bank or to which
       Bank or any of its properties is subject or bound,
 
           (B) constitute a breach or violation of, or a default under, the Bank
       Articles or the Bank By-Laws, or
 
           (C) require any consent or approval under any such law, rule,
       regulation, judgment, decree, order, governmental permit or license,
       agreement, arrangement, understanding, indenture or instrument.
 
    (g)  FINANCIAL REPORTS AND REGULATORY DOCUMENTS.  Bank's Annual Reports
under FDIC or FRB regulations for the fiscal years ended December 31, 1997 and
1996, and all other reports, registration statements, definitive proxy
statements or information statements filed or to be filed by it subsequent to
December 31, 1995 under Section 13(a), 13(c), 14 or 15(d) of the Exchange Act,
under the California Financial Code or under the securities regulations of the
FDIC or the FRB, in the form filed or to be filed (collectively, the Bank
"Regulatory Documents") with the FDIC, FRB or DFI, as applicable, correct and
complete copies of which have been made available to USB, as of the date filed:
 
        (i) complied or will comply in all material respects as to form with the
    applicable requirements under the Exchange Act, the securities regulations
    of the FDIC and the FRB, or the California Financial Code, as the case may
    be; and
 
        (ii) did not and will not contain any untrue statement of a material
    fact or omit to state a material fact required to be stated therein or
    necessary to make the statements therein, in the light of the circumstances
    under which they were made, not misleading; and each of the balance sheets
    contained in or incorporated by reference into any such Regulatory Document
    (including any related notes and schedules thereto) (collectively, the
    "Financial Statements") fairly presents, or will fairly present, in all
    material respects, the financial position of Bank as of its date, and each
    of the statements of income and changes in shareholders' equity and cash
    flows or equivalent statements in such Regulatory Documents (including any
    related notes and schedules thereto) fairly presents, or will fairly
    present, in all material respects, the results of operations, changes in
    shareholders' equity and changes in cash flows, as the case may be, of Bank
    for the periods to which they relate, comply in all material respects with
    applicable accounting requirements and with the published requirements of
    the FDIC or FRB, as applicable with respect thereto, and in each case in
    accordance with generally accepted accounting principles consistently
    applied ("GAAP") during the periods involved, except in each case as may be
    noted therein, subject to normal year-end audit adjustments in the case of
    unaudited statements. Except as disclosed in the Regulatory Documents or as
    required by GAAP, Bank has not, since December 31, 1997, made any change in
    the accounting practices or policies applied in the preparation of the
    Financial Statements of Bank.
 
    (h)  NO MATERIAL ADVERSE CHANGES.  Since December 31, 1997, no event has
occurred or circumstance arisen that, individually or taken together with all
other facts, circumstances and events (described in any paragraph of Section
5.03 or otherwise), has had or would reasonably be expected to have a Material
Adverse Effect with respect to Bank.
 
    (i)  ABSENCE OF UNDISCLOSED LIABILITIES.  Except with respect to Taxes,
which are addressed exclusively by Section 5.03(t), all of the obligations or
liabilities (whether accrued, absolute, contingent, unliquidated or otherwise,
whether due or to become due, and regardless of when asserted, including Taxes
with respect to or based upon transactions or events heretofore occurring
("Liabilities"), required to be reflected in the Financial Statements of Bank in
accordance with GAAP have been so reflected. Bank has no Liabilities except (a)
as reflected in the Financial Statements, (b) Liabilities which have arisen
after the date of the latest balance sheet of Bank in the ordinary course of
business (including,
 
                                      A-14
<PAGE>
without limitation, deposit obligations), none of which (other than deposit
obligations) is a material uninsured liability, and (c) as otherwise Previously
Disclosed. As of the date of this Agreement, there are no agreements or
commitments binding Bank to extend credit, in the individual amount of
$5,000,000 or more, or to Bank's Knowledge, in the amount per "one borrower" of
$5,000,000 or more (as combined and aggregated as set forth in 12 C.F.R.
Section32.5).
 
    (j)  LITIGATION.  No litigation, claim or other proceeding before any court
or governmental agency is pending against Bank and, to Bank's Knowledge, no such
litigation, claim or other proceeding has been threatened. Bank is not subject
to any outstanding order, writ, injunction or decree.
 
    (k)  REGULATORY MATTERS.
 
        (i) Bank is not a party to or subject to any order, decree, agreement,
    memorandum of understanding or similar arrangement with, or a commitment
    letter or similar submission to, or extraordinary supervisory letter from,
    any federal or state governmental agency or authority charged with the
    supervision or regulation of financial institutions or issuers of securities
    or engaged in the insurance of deposits (including, without limitation, the
    DFI, the FRB and the FDIC) (collectively, the "Regulatory Authorities").
 
        (ii) Bank has not been advised by any Regulatory Authority that such
    Regulatory Authority is contemplating issuing or requesting (or is
    considering the appropriateness of issuing or requesting) any such order,
    decree, agreement, memorandum of understanding, commitment letter,
    supervisory letter or similar submission.
 
       (iii) Since December 31, 1997, Bank has filed each report or other filing
    that it was required to file with any federal or state banking or other
    applicable regulatory authorities having jurisdiction over it (together with
    all exhibits thereto, the "Bank Regulatory Reports"). Bank has provided or
    made available to USB copies of all of the Bank Regulatory Reports. As of
    their respective dates or as subsequently amended prior to the date hereof,
    each of the Bank Regulatory Reports was true and correct and complied with
    the requirements of the applicable form for each such Bank Regulatory
    Report.
 
    (l)  COMPLIANCE WITH LAWS; PERMITS.  Bank:
 
        (i) except with respect to Tax, employment and environmental matters
    which are addressed exclusively by Sections 5.03(o), (p), (q), (s) and (t),
    is in compliance with all applicable federal, state, local and foreign
    statutes, laws, regulations, ordinances, rules, judgments, orders or decrees
    applicable thereto or to the employees conducting such businesses,
    including, without limitation, to the extent applicable if at all, the Equal
    Credit Opportunity Act, the Fair Housing Act, the Community Reinvestment
    Act, the Occupational Safety and Health Act of 1970, the Federal Deposit
    Insurance Act, as amended, the Real Estate Settlement Procedures Act, the
    Federal Reserve Act, the Home Mortgage Disclosure Act of 1975, the Home
    Owners Loan Act (each as amended) and all other applicable fair lending laws
    and other laws relating to Bank's business practices;
 
        (ii) has all permits, licenses, authorizations, orders and approvals of,
    and has made all filings, applications and registrations with, all
    Governmental Authorities that are required in order to permit it to own or
    lease its properties and to conduct its businesses as presently conducted;
    all such permits, licenses, certificates of authority, orders and approvals
    are in full force and effect and, to Bank's Knowledge, no suspension or
    cancellation of any of them is threatened;
 
       (iii) is in compliance with the provisions of the Bank Articles and the
    Bank Bylaws; and
 
        (iv) has received, since December 31, 1997, no notification or
    communication from any Governmental Authority.
 
                                      A-15
<PAGE>
           (A) asserting that Bank is not in compliance with any of the
       statutes, regulations or ordinances which such Governmental Authority
       enforces, or
 
           (B) threatening to revoke any license, franchise, permit or
       governmental authorization.
 
    (m)  MATERIAL CONTRACTS; DEFAULTS.  Except for those agreements and other
documents filed as exhibits to its Regulatory Documents, the Bank is not a party
to, bound by or subject to any agreement, contract, arrangement, commitment or
understanding (whether written or oral):
 
        (i) that is a "material contract" within the meaning of Item 601(b)(10)
    of the SEC's Regulation S-K, or
 
        (ii) that materially restricts the conduct of its business.
 
Bank is not in default and no circumstances exist under which by notice or
passage of time (or both) the Bank would be in default under any material
contract, agreement, commitment, arrangement, lease or other instrument to which
it is a party, by which its assets, business, or operations may be bound or
affected, or under which it or its assets, business, or operations receives
benefits, and there has not occurred any event that, with the lapse of time or
the giving of notice or both, would constitute such a default. To Bank's
Knowledge, there has been no default, cancellation or breach by any other party
to any material contract, agreement, commitment, arrangement, lease, insurance
policy or other instrument to which Bank is a party. To Bank's Knowledge, no
customer has indicated that it will stop or decrease the rate of business done
with Bank (except for changes in the ordinary course of such business).
 
    (n)  NO BROKERS.  No action has been taken by Bank that would give rise to
any valid claim against any party hereto for a brokerage commission, finder's
fee or other like payment with respect to the transactions contemplated by this
Agreement, excluding a Previously Disclosed fee to be paid to Keefe, Bruyette &
Woods, Inc.
 
    (o)  EMPLOYEES.  To Bank's Knowledge, as of the date of this Agreement there
is no announced or anticipated resignation of the chief executive officer, the
senior executive vice president, or any executive vice president, or senior vice
president of Bank. Bank has complied with all laws relating to the employment of
labor, including provisions thereof relating to wages, hours, equal opportunity,
collective bargaining and non-discrimination.
 
    (p)  EMPLOYEE BENEFIT PLANS.
 
        (i) All benefit and compensation plans, contracts, policies or
    arrangements currently in effect covering current employees or former
    employees of Bank (the "Employees") and current or former directors of Bank,
    including, but not limited to, "employee benefit plans" within the meaning
    of Section 3(3) of ERISA, and deferred compensation, stock option, stock
    purchase, stock appreciation rights, stock based, incentive and bonus plans,
    except for amendments to the Bank Plans to prevent the termination of Bank
    Stock Options if as a result of the completion of the Merger, such options
    could terminate (the "Benefit Plans"), are Previously Disclosed in Bank's
    Disclosure Schedule. True and complete copies of all Benefit Plans,
    including, but not limited to, any trust instruments and insurance contracts
    forming a part of any Benefit Plans, and all amendments thereto have been
    provided or made available to USB.
 
        (ii) All employee benefit plans, other than "Multi-Employer Plans"
    within the meaning of Section 3(37) of ERISA, covering Employees (the
    "Plans"), to the extent subject to ERISA, are in substantial compliance with
    ERISA. All employee benefit plans intended to be qualified under Section
    401(a) or Section 403(a) of the Code are in substantial compliance with all
    requirements under said Section 401(a) or Section 403(a). Bank is not a
    party to any "employee pension benefit plan" within the meaning of Section
    3(2) of ERISA ("Pension Plan") and which is intended to be qualified under
    Section 401(a) of the Code and which is a "defined benefit plan" within the
 
                                      A-16
<PAGE>
    meaning of Section 3(35) of ERISA. There is no pending or, to Bank's
    Knowledge, threatened litigation relating to the Plans. Bank has not engaged
    in a transaction with respect to any Plan that would be reasonably likely to
    subject Bank to a tax or penalty imposed by either Section 4975 of the Code
    or Section 502(i) of ERISA.
 
       (iii) Bank does not now nor has it (or any ERISA Affiliate) ever
    maintained any plan subject to Title IV of ERISA. Bank does not now nor has
    it (or any ERISA Affiliate) ever been obligated to contribute to any
    multi-employer plan within the meaning of ERISA 3(37).
 
        (iv) All contributions required to be made under the terms of any Plan
    have been or will be timely made or have been reflected on the consolidated
    financial statements of Bank included in the Regulatory Documents. Neither
    any Pension Plan nor any single-employer plan of any entity which is
    considered one employer with Bank under Section 4001 of ERISA or Section 414
    of the Code (an "ERISA Affiliate"), has an "accumulated funding deficiency"
    (whether or not waived) within the meaning of Section 412 of the Code or
    Section 302 of ERISA and no ERISA Affiliate has an outstanding funding
    waiver. Bank has not provided, nor is it required to provide, security to
    any Pension Plan or to any single-employer plan of an ERISA Affiliate
    pursuant to Section 401(a)(29) of the Code.
 
        (v) Except as Previously Disclosed: (i) no action, suit, charge,
    complaint, proceeding, hearing, investigation or claim is pending with
    regard to any plan other than routine uncontested claims for benefits; (ii)
    the consummation of the transactions contemplated by this Agreement will not
    (a) cause any plan to increase benefits payable to any participant or
    beneficiary; (b) entitle any current or former employee of Bank to severance
    pay, unemployment compensation or any other payment, benefit or award, or
    (c) accelerate or modify the time of payment or vesting, or increase the
    amount of any benefit, award or compensation due any such employee; (iv) no
    plan is currently under examination or audit by the Department of Labor, the
    Internal Revenue Service or the Pension Benefit Guaranty Corporation; (v) to
    Bank's Knowledge, Bank has no actual or potential liability arising under
    title IV of ERISA as a result of any plan that has terminated or is in the
    process of terminating; (vi) Bank has no actual or potential liability under
    section 4201 et. seq. of ERISA for either a complete withdrawal or a partial
    withdrawal from a multi-employer plan; and (vii) with respect to the plans,
    Bank has no liability (either directly or as a result of indemnification)
    for (and the transaction contemplated by this Agreement will not cause any
    liability for): (a) any excise taxes under section 4971 through section
    4980B, section 4999, section 5000 or any other section of the Code, or (b)
    any penalty under Section 502(i), section 502(l), Part 6 of Title I or any
    other provision of ERISA, or (c) any excise taxes, penalties, damages or
    equitable relief as a result of any prohibited transaction, breach of
    fiduciary duty or other violation under ERISA or any other applicable law.
 
        (vi) Bank has no obligation for retiree health and life benefits under
    any Benefit Plan. Bank may amend or terminate any such Benefit Plan at any
    time without incurring any liability thereunder.
 
       (vii) No plan, separately or in the aggregate, requires or would result
    in the payment of any "excess parachute payments" within the meaning of
    Section 280G of the Code, and the consummation of the transactions
    contemplated by this Agreement will not be a factor in causing payments to
    be made by USB or Bank that are not deductible (in whole or in part) under
    Section 280G of the Code.
 
    (q)  LABOR MATTERS.  Bank is not a party to nor bound by any collective
bargaining agreement, contract or other agreement or understanding with a labor
union or labor organization, nor is it the subject of a proceeding asserting
that it has committed an unfair labor practice (within the meaning of the
National Labor Relations Act) or seeking to compel it to bargain with any labor
organization as to wages or conditions of employment, nor is there any strike or
other labor dispute involving it or, to
 
                                      A-17
<PAGE>
Bank's Knowledge, threatened, nor to Bank's Knowledge is there any activity
involving its employees seeking to certify a collective bargaining unit or
engaging in other organizational activity.
 
    (r)  PROPERTIES.
 
        (i) Bank owns good and marketable title to all of the real property and
    all of the personal property, fixtures, furniture and equipment reflected in
    Bank's September 30, 1998 Financial Statements or acquired since September
    30, 1998 (other than real property reflected in Bank's September 30, 1998
    Financial Statements as OREO), free and clear of all liens and encumbrances,
    except for (A) mortgages on real property as Previously Disclosed, (B)
    encumbrances which do not materially affect the value of, or interfere with
    the past or future use or ability to convey, the property subject thereto or
    affected thereby, (C) liens for current taxes and special assessments not
    yet due and payable, (D) leasehold estates with respect to multi-tenant
    buildings owned by Bank, (E) mechanic's, materialman's and other liens
    imposed by operation of law, and (F) property disposed of since September
    30, 1998 in the ordinary course of business; PROVIDED, HOWEVER, that no
    disposal of any fee interest in real property housing Bank branches, loan
    offices or offices engaged in Bank operations shall be considered to be in
    the ordinary course of business.
 
        (ii) Bank has previously made available to USB complete and accurate
    copies of each of the leases of Bank, including all amendments and
    modifications thereto (the "Leases"). As of the date of this Agreement, the
    Leases are in full force and effect, and Bank has valid and existing
    leasehold interests under the Leases for the terms set forth therein. With
    respect to the Leases, Bank is not in default, and, to Bank's Knowledge,
    none of the other parties to any of the Leases is in default, and, to Bank's
    Knowledge, no circumstances (not in the control of Bank) exist which could
    result in such a default under any of such Leases.
 
       (iii) The rent rolls previously made available to USB are true and
    correct in all material respects and describe all occupancies and the
    material terms of each occupancy as of the dates thereof.
 
        (iv) All of the buildings, fixtures, furniture and equipment necessary
    for the conduct of the business of Bank are in good condition and repair,
    ordinary wear and tear excepted, and are usable in the ordinary course of
    business. Bank owns, or leases under valid leases, all buildings, fixtures,
    furniture, personal property, land improvements and equipment necessary for
    the conduct of its business as it is presently being conducted.
 
    (s)  ENVIRONMENTAL MATTERS.  To Bank's Knowledge, neither the conduct nor
operation of Bank nor any condition of any property presently or previously
owned, leased or operated by it (including, without limitation, in a fiduciary
or agency capacity), violates or violated Environmental Laws and to Bank's
Knowledge, no condition has existed or event has occurred with respect to it or
any such property that, with notice or the passage of time, or both, is
reasonably likely to result in liability under Environmental Laws. Bank has not
received any written notice from any person or entity that it or the operation
or condition of any property ever owned, leased, operated, or held as collateral
or in a fiduciary capacity by it is or was in violation of or otherwise is
alleged to have liability under any Environmental Law, including, but not
limited to, responsibility (or potential responsibility) for the cleanup or
other remediation of any pollutants, contaminants, or hazardous or toxic wastes,
substances or materials at, on, beneath, or originating from, any such property.
To Bank's Knowledge, no Hazardous Substances (as defined below) have been
deposited or disposed of in, on or under Bank's owned or leased properties
(including properties owned, managed or controlled by Bank in connection with
its lending or fiduciary operations).
 
As used herein, the term "Environmental Law" means any federal, state or local
law, regulation, order, decree, permit, authorization, opinion, common law or
agency requirement relating to:
 
        (A) the protection or restoration of the environment, health, safety, or
    natural resources;
 
                                      A-18
<PAGE>
        (B) the handling, use, presence, disposal, release or threatened release
    of any Hazardous Substance; or
 
        (C) noise, odor, wetlands, indoor air, pollution, contamination or any
    injury or threat of injury to persons or property in connection with any
    Hazardous Substance.
 
As used herein, the term "Hazardous Substance" means any substance in any
concentration that is:
 
        (A) listed, classified or regulated pursuant to any Environmental Law;
 
        (B) any petroleum product or by-product, asbestos-containing material,
    lead-containing paint or plumbing, polychlorinated biphenyls, radioactive
    materials or radon; or
 
        (C) any other substance which is or may be the subject of regulatory
    action by any Governmental Authority in connection with any Environmental
    Law.
 
    (t)  TAX MATTERS.  Except as Previously Disclosed, (A) all Tax Returns that
are required to be filed (taking into account any extensions of time within
which to file) by or with respect to Bank have been duly filed, (B) all Taxes
shown to be due on the Tax Returns have been paid in full or have been
adequately provided for in the financial statements of the Bank in accordance
with GAAP, (C) the Tax Returns have been examined by the Internal Revenue
Service or the appropriate Tax authority or the period for assessment of the
Taxes in respect of which such Tax Returns were required to be filed has
expired, and (D) all assessments made in writing as a result of such
examinations have been paid in full or have been adequately provided for in the
financial statements of Bank in accordance with GAAP. Bank is not now nor has it
been at any time since January 1, 1991, a member of any consolidated or
affiliated group for Tax purposes. As of the date hereof, Bank has no reason to
believe that any conditions exist that might prevent or impede the Merger from
qualifying as a reorganization within the meaning of Section 368 of the Code.
 
    (u)  RISK MANAGEMENT INSTRUMENTS.  All interest rate swaps, caps, floors,
option agreements, futures and forward contracts and other similar risk
management arrangements, whether entered into for Bank's own account, or for the
account of one or more of its customers (all of which are listed on Bank's
Disclosure Schedule), if any, were entered into:
 
        (i) in accordance with prudent business practices and all applicable
    laws, rules, regulations and regulatory policies, and
 
        (ii) with counterparties believed to be financially responsible at the
    time;
 
and each of them constitutes the valid and legally binding obligation of the
other party thereto enforceable in accordance with its terms (except as
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium, fraudulent transfer and similar laws of general
applicability relating to or affecting creditors' rights or by general equity
principles), and are in full force and effect.
 
Neither the Bank, nor to Bank's Knowledge, any other party thereto, is in breach
of any of its obligations under any such agreement or arrangement.
 
    (v)  BOOKS AND RECORDS.  The books and records of Bank prepared on or after
December 31, 1996, have been fully, properly and accurately maintained in all
material respects, and there are no material inaccuracies or discrepancies of
any kind contained or reflected therein.
 
    (w)  LOAN PORTFOLIO.
 
        (i) Bank is not a party to any written or oral (A) loan agreement, note
    or borrowing arrangement (including, without limitation, leases, credit
    enhancements, commitments, guarantees and interest-bearing assets)
    (collectively, "Loans"), other than Loans the unpaid unguaranteed principal
    balance of which does not exceed $100,000, under the terms of which the
    obligor was, as
 
                                      A-19
<PAGE>
    of December 31, 1998, over 90 days delinquent in payment of principal or
    interest or in default of any other provision, or (B) Loan with any
    director, executive officer or five percent or greater shareholder of Bank,
    or to Bank's Knowledge, any person, corporation or enterprise controlling,
    controlled by or under common control with any of the foregoing. Section
    5.03(w) of the Bank's Disclosure Schedule sets forth (x) all of the Loans
    with original unguaranteed principal amounts in excess of $100,000 of Bank
    that as of December 31, 1998, were classified by any bank examiner (whether
    regulatory or internal) as "Other Loans Specially Mentioned", "Special
    Mention", "Substandard", "Doubtful", "Loss", "Classified", "Criticized",
    "Credit Risk Assets", "Concerned Loans", "Watch List" or words of similar
    import, together with the principal amount of and accrued and unpaid
    interest on each such Loan and the identity of the borrower thereunder, (y)
    by category of Loan (i.e., commercial, consumer, etc.), all of the other
    Loans of Bank that as of December 31, 1998, were classified as such,
    together with the aggregate principal amount of and accrued and unpaid
    interest on such Loans by category and (z) each asset of Bank that as of
    December 31, 1998, was classified as "Other Real Estate Owned" and the book
    value thereof.
 
        (ii) Each Loan in original principal amount in excess of $100,000 (A) is
    evidenced by notes, agreements or other evidences of indebtedness which are
    true, genuine and what they purport to be, (B) to the extent secured, has
    been secured by valid liens and security interests which have been perfected
    and (C) is the legal, valid and binding obligation of the obligor named
    therein, enforceable in accordance with its terms, subject to bankruptcy,
    insolvency, fraudulent conveyance and other laws of general applicability
    relating to or affecting creditors' rights and to general equity principles.
 
    (x)  INSURANCE.  Bank's Disclosure Schedule lists each insurance policy
maintained by Bank with respect to its properties and assets. Prior to the date
hereof, Bank has provided or made available to USB complete and accurate copies
of each of the insurance policies described on Bank's Disclosure Schedule. All
such insurance policies are in full force and effect, and Bank is not in default
with respect to its obligations under any of such insurance policies.
 
    (y)  AFFILIATE TRANSACTIONS.  Neither Bank nor any of its respective
executive officers or directors, or, to Bank's Knowledge, any member of the
immediate family of any such executive officer or director (which for the
purposes hereof shall mean a spouse, minor child or adult child living at the
home of any such executive officer or director), or, to Bank's Knowledge, any
entity which any of such persons "controls" (within the meaning of Regulation O
of the FRB), has any agreement with Bank (other than employment arrangements or
deposit account relationships) or any interest in any property, real, personal
or mixed, tangible or intangible, used in or pertaining to the business of Bank.
 
    (z)  ADMINISTRATION OF FIDUCIARY ACCOUNTS.  Bank has properly administered,
in all respects material and which could reasonably be expected to be material
to the business, operations or financial condition of Bank, taken as a whole,
all accounts for which it acts as a fiduciary, including but not limited to
accounts for which it serves as a trustee, agent, custodian, personal
representative, guardian, conservator or investment advisor, in accordance with
the terms of the governing documents and applicable state and federal law and
regulation and common law. Neither Bank nor any of its respective officers or
directors has committed any breach of trust with respect to any such fiduciary
account which is material to or could reasonably be expected to be material to
the business, operations or financial condition of Bank and the accountings for
each such fiduciary account are true and correct in all material respects and
accurately reflect the assets of such fiduciary account in all material
respects.
 
    (aa)  MILLENNIUM COMPLIANCE.  All software, whether embedded or otherwise,
used or licensed for use in the business of Bank as presently conducted is
Millennium Compliant. Bank is undertaking all reasonable efforts necessary to
determine whether any third party with whom Bank has a material business
relationship has software that is Millennium Compliant and to replace all such
material
 
                                      A-20
<PAGE>
business relationships where, in the judgment of Bank, software that is
Millennium Compliant is not present and will not be present in time to avoid
processing failures or errors that would have a detrimental impact on such third
party that could be detrimental to Bank.
 
As used in this Agreement, "Millennium Compliant" shall mean the ability of such
software to provide the following functions:
 
        (i) consistently and accurately handle date information before, during
    and after January 1, 2000, including but not limited to accepting date
    input, providing date output, and performing calculations on dates or
    portions of dates;
 
        (ii) respond to any two-digit date input in a way that resolves any
    ambiguity as to century in a disclosed, defined and predetermined manner;
 
       (iii) store and provide output of date information in ways that are
    unambiguous as to century; and
 
        (iv) function accurately in accordance with specifications with respect
    to dates and without interruption before, during and after January 1, 2000.
 
5.04  REPRESENTATIONS AND WARRANTIES OF USB.  Subject to Section 5.02, USB
hereby represents and warrants to Bank as follows:
 
    (a)  ORGANIZATION, STANDING AND AUTHORITY.
 
        (i) USB is duly organized, validly existing and in good standing under
    the laws of the State of Delaware. USB is duly licensed and qualified to do
    business and is in good standing in the states of the United States and
    foreign jurisdictions where its ownership or leasing of property or assets
    or the conduct of its business requires it to be so licensed and qualified.
    USB has in effect all federal, state, local, and foreign governmental
    authorizations necessary for it to own or lease its properties and assets
    and to carry on its business as it is now conducted. USB is duly registered
    as a bank holding company under the Bank Holding Company Act of 1956, as
    amended.
 
        (ii) US Bank is duly organized, validly existing and in good standing as
    a national banking association under the federal laws of the United States.
    US Bank is duly licensed and qualified to do business and in good standing
    in the states of the United States and foreign jurisdictions where its
    ownership or leasing of property or assets or the conduct of its business
    requires it to be so licensed and qualified.
 
    (b)  USB CAPITAL STOCK.  As of the date of this Agreement, the authorized
capital stock of USB consists of 1,500,000,000 shares of USB Common Stock and
50,000,000 shares of preferred stock, par value $1.00 per share ("USB Preferred
Stock"). As of January 31, 1999, there were 744,797,857 shares of USB Common
Stock and no shares of USB Preferred Stock issued and outstanding, including
18,885,410 shares of USB Common Stock held in USB's treasury. As of the date of
this Agreement, no shares of USB Common Stock or USB Preferred Stock were
reserved for issuance, except that 60,900,000 shares of USB Common Stock were
reserved for issuance pursuant to the stock compensation plans, warrants, and
other arrangements of USB (collectively, the "USB Stock Reserves"). All of the
issued and outstanding shares of USB 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. As of the date of
this Agreement, except as referred to above, USB does not have any Rights issued
or outstanding with respect to any shares of USB Common Stock or USB Preferred
Stock or any other equity securities of USB. The shares of USB Common 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.
 
                                      A-21
<PAGE>
    (c)  CORPORATE POWER.  USB and each of its Subsidiaries has the corporate
power and authority to carry on its business as it is now being conducted and to
own all its properties and assets; and each of USB and US Bank has the corporate
power and authority to execute, deliver and perform its obligations under this
Agreement and to consummate the transactions contemplated hereby.
 
    (d)  CORPORATE AUTHORITY.  This Agreement and the transactions contemplated
hereby have been authorized by all necessary corporate action of each of USB and
the USB Board and US Bank and the Board of Directors of US Bank and no other
corporate proceedings on the part of USB and US Bank are necessary to authorize
this Agreement and the transactions contemplated hereby. This Agreement is a
valid and legally binding agreement of USB enforceable in accordance with its
terms (except as enforceability may be limited by applicable bankruptcy,
insolvency, reorganization, moratorium, fraudulent transfer and similar laws of
general applicability relating to or affecting creditors' rights or by general
equity principles).
 
    (e)  REGULATORY APPROVALS; NO DEFAULTS.
 
        (i) No consents or approvals of, or filings or registrations with, any
    court, administrative agency or commission or other governmental authority
    or instrumentality or with any third party are required to be made or
    obtained by USB or any of its Subsidiaries in connection with the execution,
    delivery or performance by USB of this Agreement or to consummate the Merger
    except for:
 
           (A) the filing of applications and notices, as applicable, with the
       federal and state banking authorities;
 
           (B) approval of the listing on USB's Stock Exchange of USB Common
       Stock to be issued in the Merger;
 
           (C) the filing and declaration of effectiveness of the Registration
       Statement;
 
           (D) the filing of the Merger Agreement, certificates of officers of
       the constituent corporations and notice of the Effective Time with the
       OCC;
 
           (E) such filings as are required to be made or approvals as are
       required to be obtained under the securities or "Blue Sky" laws of
       various states in connection with the issuance of USB Common Stock in the
       Merger; and
 
           (F) receipt of the approvals set forth in Section 7.01(b). As of the
       date hereof, USB is not aware of any reason why the approvals set forth
       in Section 7.01(b) will not be received.
 
        (ii) Subject to receipt of the regulatory approvals referred to in the
    preceding paragraph and expiration of the related waiting periods, and
    required filings under federal and state securities laws, the execution,
    delivery and performance of this Agreement and the consummation of the
    transactions contemplated hereby do not and will not:
 
           (A) constitute a breach or violation of, or a default under, or give
       rise to any Lien, any acceleration of remedies or any right of
       termination under, any law, rule or regulation or any judgment, decree,
       order, governmental permit or license, or agreement, indenture or
       instrument of USB or of any of its Subsidiaries or to which USB or any of
       its Subsidiaries or properties is subject or bound;
 
           (B) constitute a breach or violation of, or a default under, the
       certificate of incorporation or by-laws (or similar governing documents)
       of USB or any of its Subsidiaries; or
 
           (C) require any consent or approval under any such law, rule,
       regulation, judgment, decree, order, governmental permit or license,
       agreement, indenture or instrument.
 
                                      A-22
<PAGE>
    (f)  FINANCIAL REPORTS AND REGULATORY DOCUMENTS; MATERIAL ADVERSE EFFECT.
 
        (i) USB's Regulatory Documents, as of the date filed:
 
           (A) complied or will comply in all material respects as to form with
       the applicable requirements under the Securities Act or the Exchange Act,
       as the case may be, and
 
           (B) did not and will not contain any untrue statement of a material
       fact or omit to state a material fact required to be stated therein or
       necessary to make the statements therein, in the light of the
       circumstances under which they were made, not misleading; and each of the
       balance sheets contained in or incorporated by reference into any such
       Regulatory Document (including any related notes and schedules thereto)
       fairly presents, or will fairly present, the financial position of USB
       and its Subsidiaries as of its date, and each of the statements of income
       and changes in shareholders' equity and cash flows or equivalent
       statements in such Regulatory Documents (including any related notes and
       schedules thereto) fairly presents, or will fairly present, the results
       of operations, changes in shareholders' equity and changes in cash flows,
       as the case may be, of USB and its Subsidiaries for the periods to which
       they relate, in each case in accordance with GAAP consistently applied
       during the periods involved, except in each case as may be noted therein,
       subject to normal year-end audit adjustments in the case of unaudited
       statements.
 
        (ii) Since December 31, 1997, no event has occurred or circumstance
    arisen that, individually or taken together with all other facts,
    circumstances and events (described in any paragraph of Section 5.04 or
    otherwise), has had a Material Adverse Effect with respect to it.
 
    (g)  NO BROKERS.  No action has been taken by USB that would give rise to
any valid claim against any party hereto for a brokerage commission, finder's
fee or other like payment with respect to the transactions contemplated by this
Agreement.
 
    (h)  ACCOUNTING TREATMENT; TAX MATTERS.  As of the date hereof, neither USB
nor any of its Subsidiaries has any reason to believe that any conditions exist
that might prevent or impede the Merger from qualifying as a reorganization
within the meaning of Section 368 of the Code.
 
    (i)  REGULATORY MATTERS.
 
        (i) Neither USB nor any of its Subsidiaries or any of their properties
    is a party to or is subject to any order, decree, agreement, memorandum of
    understanding or similar arrangement with, or a commitment letter or similar
    submission to, or extraordinary supervisory letter from, any Regulatory
    Authority.
 
        (ii) Neither USB nor any of its Subsidiaries has been advised by any
    Regulatory Authority that such Regulatory Authority is contemplating issuing
    or requesting (or is considering the appropriateness of issuing or
    requesting) any such order, decree, agreement, memorandum of understanding,
    commitment letter, supervisory letter or similar submission.
 
    (j)  TAX MATTERS.  As of the date hereof, USB has no reason to believe that
any conditions exist that might prevent or impede the Merger from qualifying as
a reorganization within the meaning of Section 368 of the Code.
 
                                   ARTICLE VI
                                   COVENANTS
 
6.01  REASONABLE BEST EFFORTS.  Subject to the terms and conditions of this
Agreement, each of Bank and USB agrees to use its reasonable best efforts in
good faith to take, or cause to be taken, all actions, and to do, or cause to be
done, all things necessary, proper or desirable, or advisable under applicable
laws, so as to permit consummation of the Merger as promptly as practicable and
otherwise
 
                                      A-23
<PAGE>
to enable consummation of the transactions contemplated hereby and shall
cooperate fully with the other party hereto to that end.
 
6.02  SHAREHOLDER APPROVAL.  Bank shall take all steps necessary to duly call,
give notice of, convene and hold a meeting of its shareholders to be held as
soon as is reasonably practicable after the date on which the Registration
Statement becomes effective for the purpose of voting upon the approval of this
Agreement and the consummation of the transactions contemplated hereby (such
meeting, together with any adjournment or postponement thereof, is hereinafter
referred to as the "Bank Meeting"). Bank will, through its Board of Directors,
subject to the next sentence, recommend to its shareholders approval of this
Agreement and the transactions contemplated hereby and such other matters as may
be submitted to its shareholders in connection with this Agreement.
Notwithstanding the foregoing, the Bank Board shall be permitted to withdraw or
modify in a manner adverse to USB its recommendation to its shareholders, or
shall be permitted to recommend a Superior Proposal, if (i) a Superior Proposal
has been received by the Bank Board prior to the time that the Bank Board
determines to withdraw or modify its recommendation, or to recommend such
Superior Proposal, and (ii) the Bank Board reasonably determines that it is
required by its fiduciary duties to take such action.
 
6.03  REGISTRATION STATEMENT.
 
    (a)  REGISTRATION STATEMENT.  USB agrees to prepare a registration statement
on Form S-4 or other applicable form (the "Registration Statement") to be filed
by USB with the SEC in connection with the issuance of USB Common Stock in the
Merger (including the proxy statement and prospectus and other proxy
solicitation materials of Bank constituting a part thereof (the "Proxy
Statement") and all related documents). Bank agrees to cooperate with USB, its
counsel and its accountants, in preparation of the Registration Statement and
the Proxy Statement. Bank agrees to file the Proxy Statement in preliminary form
with the FRB as soon as reasonably practicable, and USB agrees to file the
Registration Statement with the SEC as soon as reasonably practicable after any
FRB comments with respect to the preliminary Proxy Statement are resolved. Each
of Bank and USB agrees to use all reasonable efforts to cause the Registration
Statement to be declared effective under the Securities Act as promptly as
reasonably practicable after filing thereof. USB also agrees to 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. Bank agrees to furnish to USB all information concerning Bank,
its officers, directors and shareholders as may be reasonably requested in
connection with the foregoing.
 
    (b)  QUALITY OF INFORMATION.  Each of Bank, and USB, agrees that none of the
information supplied or to be supplied by it for inclusion or incorporation by
reference in:
 
        (i) the Registration Statement will, at the time the Registration
    Statement and each amendment or supplement thereto, if any, becomes
    effective under the Securities Act, contain any untrue statement of a
    material fact or omit to state any material fact required to be stated
    therein or necessary to make the statements therein not misleading, and
 
        (ii) the Proxy Statement and any amendment or supplement thereto will,
    at the date of mailing to shareholders and at the time of the Bank Meeting,
    contain any untrue statement of a material fact or omit to state any
    material fact required to be stated therein or necessary to make the
    statements therein not misleading or any statement which, in the light of
    the circumstances under which such statement is made, will be false or
    misleading with respect to any material fact, or which will omit to state
    any material fact necessary in order to make the statements therein not
    false or misleading or necessary to correct any statement in any earlier
    statement in the Proxy Statement or any amendment or supplement thereto.
 
Each of Bank and USB further agrees that if it shall become aware prior to the
Effective Date of any information furnished by it that would cause any of the
statements in the Proxy Statement to be false
 
                                      A-24
<PAGE>
or misleading with respect to any material fact, or to omit to state any
material fact necessary to make the statements therein not false or misleading,
promptly to inform the other party thereof and to take the necessary steps to
correct the Proxy Statement.
 
    (c)  NOTICES REGARDING REGISTRATION.  USB agrees to advise Bank, promptly
after USB receives notice thereof, of the time when the Registration Statement
has become effective or any supplement or amendment has been filed, of the
issuance of any stop order or the suspension of the qualification of USB Common
Stock for offering or sale in any jurisdiction, of the initiation or threat of
any proceeding for any such purpose, or of any request by the SEC for the
amendment or supplement of the Registration Statement or for additional
information.
 
6.04  PRESS RELEASES.  Each of Bank and USB agrees that it will not, without the
prior approval of the other party, issue any press release or written statement
for general circulation relating to the transactions contemplated hereby, except
as otherwise required by applicable law or regulation or rules of the stock
market where its securities are traded (provided that the issuing party shall
nevertheless provide the other party with notice of, and the opportunity to
review, any such press release or written statement).
 
6.05  ACCESS; INFORMATION.
 
    (a)  ACCESS.  Bank agrees that upon reasonable notice, it shall afford USB
and USB's officers, employees, counsel, accountants and other authorized
representatives, such access during normal business hours throughout the period
prior to the Effective Time to the books, records (including, without
limitation, tax returns and work papers of independent auditors), properties,
personnel and to such other information (including, without limitation, the
Bank's Year 2000 contingency plan) as USB may reasonably request and, during
such period, Bank shall furnish promptly to USB (i) a copy of each material
report, schedule and other document filed by it pursuant to the requirements of
federal or state securities or banking laws, and (ii) all other information
concerning the business, properties and personnel of it as the requesting party
may reasonably request.
 
    Bank shall not be required to provide access to or to disclose information
where such access or disclosure would violate or prejudice the rights of its
customers, jeopardize any attorney-client privilege 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)  CONFIDENTIALITY.  All information furnished to USB pursuant to Section
6.05(a) shall be subject to, and USB shall hold all such information in
confidence in accordance with, the provisions of the confidentiality agreement,
dated November 24, 1998 (the "Confidentiality Agreement"), between USB and Bank.
Bank shall have the same obligations to USB with respect to information
furnished to Bank by USB.
 
    (c) No investigation by either party of the business and affairs of the
other party shall affect or be deemed to modify or waive any representation,
warranty, covenant or agreement in this Agreement, or the conditions to either
party's obligation to consummate the transactions contemplated by this
Agreement.
 
6.06  ACQUISITION PROPOSALS.  Bank agrees that it shall not, and shall not
authorize or permit any of its officers, directors, employees or agents to,
directly or indirectly solicit, initiate or encourage any inquiries relating to,
or the making of any proposal which constitutes, a "takeover proposal" (as
defined below), or, participate in any discussions or negotiations, or provide
third parties with any nonpublic information, relating to any such inquiry or
proposal or otherwise facilitate any effort or attempt to make or implement a
takeover proposal or enter into a takeover proposal; provided, however, that (x)
if the Bank Board shall have reasonably determined that it has a fiduciary duty
to do so, after receipt of an unsolicited bona fide written proposal with
respect to a takeover proposal that in
 
                                      A-25
<PAGE>
the good faith judgment of the Bank Board (based on the advice of an independent
financial advisor of nationally recognized reputation) is more favorable to
Bank's shareholders than the Merger and which is made by a third party
financially capable of consummating such takeover proposal (a "Superior
Proposal") Bank may participate in discussions or negotiations in furtherance of
such Superior Proposal or provide such nonpublic information in furtherance of
such Superior Proposal; and (y) Bank may communicate information about any such
takeover proposal to its shareholders if, in the judgment of the Bank Board,
based upon the advice of outside counsel, such communication is required under
applicable law; provided, further, that nothing contained in this Agreement
shall prevent Bank or the Bank Board from complying with Rule 14e-2 promulgated
under the Exchange Act (or any similar rule adopted by the FRB) with regard to a
takeover proposal. Bank shall immediately cease and cause to be terminated any
activities, discussions or negotiations conducted prior to the date of this
Agreement with any parties other than USB. Bank shall promptly (within two
business days) advise USB following the receipt by Bank of, any bona fide
written takeover proposal and the general terms and conditions thereof and the
identity of the party from whom such takeover proposal has been received. Bank
will take all actions necessary or advisable to inform the appropriate
individuals or entities referred to in the first sentence hereof of the
obligations undertaken in this Section 6.06. As used in this Agreement,
"Takeover Proposal" shall mean any tender or exchange offer, proposal for a
merger, consolidation or other business combination involving Bank or any
proposal or offer to acquire in any manner a substantial equity interest in, or
a substantial portion of the assets of, Bank other than the transactions
contemplated or permitted by this Agreement.
 
6.07  AFFILIATE AGREEMENTS.  Bank shall use its reasonable 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 Bank to provide or make
available to USB, as soon as practicable after the date of this Agreement, a
written agreement, in the form of Exhibit B hereto.
 
6.08  STOCK EXCHANGE LISTING.  USB agrees to use its reasonable best efforts to
list, prior to the Effective Date, on USB's Stock Exchange, subject to official
notice of issuance, the shares of USB Common Stock to be issued to the holders
of Bank Common Stock in the Merger.
 
6.09  REGULATORY APPLICATIONS.
 
    (a)  COOPERATION WITH FILINGS.  USB and Bank shall, and USB shall cause each
of its Subsidiaries to, cooperate and use their respective reasonable best
efforts to prepare all documentation, to effect all filings and to obtain all
permits, consents, approvals and authorizations of all third parties and
Governmental Authorities necessary to consummate the transactions contemplated
by this Agreement. USB and Bank shall use their reasonable best efforts to make
all required bank regulatory filings, including the appropriate filing with the
FRB, within 30 days after the date hereof. Each of USB and Bank shall have the
right to review in advance, and to the extent practicable each will consult with
the other, in each case subject to applicable laws relating to the exchange of
information, with respect to all material written information submitted to any
third party or any Governmental Authority in connection with the transactions
contemplated by this Agreement. In exercising the foregoing right, each of the
parties hereto agrees to act reasonably and as promptly as practicable. Each
party hereto agrees that it will consult with the other party hereto with
respect to the obtaining of all material permits, consents, approvals and
authorizations of all third parties and Governmental Authorities necessary or
advisable to consummate the transactions contemplated by this Agreement and each
party will keep the other party appraised of the status of material matters
relating to completion of the transactions contemplated hereby.
 
    (b)  AGREEMENT TO FURNISH INFORMATION.  Each party agrees, upon request, to
furnish the other party with all information concerning itself, its
Subsidiaries, directors, officers and shareholders and such other matters as may
be reasonably necessary or advisable in connection with any filing, notice or
 
                                      A-26
<PAGE>
application made by or on behalf of such other party or any of its Subsidiaries
to any third party or Governmental Authority.
 
6.10  INDEMNIFICATION; DIRECTORS' AND OFFICERS' INSURANCE.
 
    (a)  INDEMNIFICATION BY USB.  From and after the Effective Time, USB agrees
to indemnify and hold harmless each present and former director and officer of
Bank determined as of the Effective Time (the "Indemnified Parties"), against
any costs or expenses (including reasonable attorneys' fees), judgments, fines,
losses, claims, damages or liabilities (collectively, "Costs") incurred in
connection with any actual or threatened claim, action, suit, proceeding or
investigation, whether civil, criminal, administrative or investigative, arising
out of matters existing or occurring at or prior to the Effective Time
(including with respect to this Agreement or any of the transactions
contemplated hereby) whether asserted, claimed, threatened or arising prior to,
at, or after the Effective Time, to the fullest extent permitted by law, USB
shall also advance expenses as incurred to the fullest extent permitted under
Delaware law, upon receipt of any undertaking required by applicable law.
 
    (b)  INDEMNIFICATION PROCEDURE.  Any Indemnified Party wishing to claim
indemnification under Section 6.10(a), upon learning of any such claim, action,
suit, proceeding or investigation, shall as promptly as possible notify USB
thereof, but the failure to so notify shall not relieve USB of any liability it
may have to such Indemnified Party if such failure does not materially prejudice
USB. In the event of any such claim, action, suit, proceeding or investigation
(whether arising before or after the Effective Time),
 
        (i) USB shall have the right to assume the defense thereof and USB shall
    not be liable to such Indemnified Parties for any legal expenses of other
    counsel or any other expenses subsequently incurred by such Indemnified
    Parties in connection with the defense thereof, except that if USB elects
    not to assume such defense or counsel for the Indemnified Parties advises in
    writing that there are issues which raise conflicts of interest between USB
    and the Indemnified Parties, the Indemnified Parties may retain counsel
    satisfactory to them, and USB shall pay the reasonable fees and expenses of
    one such counsel for the Indemnified Parties in any jurisdiction promptly as
    statements thereof are received,
 
        (ii) the Indemnified Parties will cooperate in the defense of any such
    matter, and
 
       (iii) USB shall not be liable for any settlement effected without its
    prior written consent (which consent shall not be unreasonably withheld);
    and provided, further, that USB shall not have any 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 the indemnification of such Indemnified Party in the
    manner contemplated hereby is not permitted or is prohibited by applicable
    law.
 
    (c)  DIRECTORS' AND OFFICERS' LIABILITY INSURANCE.  For a period of three
years after the Effective Date, USB shall use its best efforts to provide that
portion of directors' and officers' liability insurance that serves to reimburse
officers and directors of Bank (determined as of the Effective Time) with
respect to claims against such officers and directors arising from facts or
events which occurred on or before the Effective Time of at least the same
coverage and amounts, and containing terms and conditions no less advantageous,
as that coverage currently provided by Bank; provided, however, that in no event
shall USB be required to expend more than 200% per annum of the current amount
expended by Bank per annum to maintain or procure such directors and officers
insurance coverage; further that officers and directors of Bank may be required
to make application and provide customary representations and warranties to
USB's insurance carrier for the purpose of obtaining such insurance; and
provided, further, that such coverage will have a single aggregate for such
three-year period in an amount not less than the annual aggregate of such
coverage currently provided by Bank.
 
                                      A-27
<PAGE>
    (d)  SUCCESSOR LIABILITY.  If USB or any of its successors or assigns (i)
shall consolidate with or merge into any other corporation or entity and shall
not be the continuing or surviving corporation or entity of such consolidation
or merger or (ii) shall transfer all or substantially all of its properties and
assets to any individual, corporation or other entity, then and in each such
case, proper provision shall be made so that the successors and assigns of USB
shall assume the obligations set forth in this Section 6.10.
 
    (e) USB's obligations under this Section 6.10 shall continue in full force
and effect without time limit from and after the Effective Time. The provisions
of this Section 6.10 are intended to be for the benefit of, and shall be
enforceable by, each Indemnified Party and his or her heirs and representatives.
 
6.11  BENEFIT PLANS.
 
    (a) Except as otherwise specifically agreed between USB and an employee, USB
shall, from and after the Effective Time, assume and honor in accordance with
their terms all employment, severance, retirement and other compensation plans,
contracts, agreements and arrangements existing prior to the execution of this
Agreement which are between Bank and any officer or employee thereof and which
have been Previously Disclosed. USB acknowledges and agrees that the Merger
constitutes a "Change in Control" for all purposes pursuant to such plans,
contracts, agreements and arrangements and agrees to abide by the provisions of
any contract, agreement or arrangements which relate to a Change in Control. The
foregoing is intended only to preserve nonforfeitable rights earned or accrued
as of the Effective Time under such plans, contracts, agreements, and
arrangements; it shall not be deemed to prevent USB from amending or terminating
any such plan, contract, agreement or arrangement to the extent permitted by
such plan, contract, agreement or arrangement.
 
    (b) USB shall, within a reasonable time after the Effective Time, provide
former employees of Bank who remain as employees of USB or the Surviving
Corporation with compensation and employee benefit plans no less favorable in
the aggregate than those provided to similarly situated employees of USB
(including the medical and health benefits available to other similarly situated
employees of USB and its Subsidiaries and coverage of any pre-existing health or
medical conditions covered by Bank benefit plans, provided the individual was
actually covered for such condition by Bank's plan immediately prior to the
Effective Time), subject, with respect to any executive officer of Bank, to the
terms of any agreement(s) entered into by or among that executive officer and
USB on the date of this Agreement or otherwise prior to the Effective Time,
specifically modifying, replacing or relinquishing some or all of his
agreements, benefits or plans. If any employee of Bank becomes a participant in
any employment benefit plan, practice or policy of USB or the Surviving
Corporation, such employee shall be given credit under such plan, practice or
policy for all service with Bank from the employee's most recent date of hire by
Bank and prior to the Effective Time for purposes of eligibility and vesting,
but not for the purposes of determining benefit accruals or the rate of benefit
accruals, for which such service is taken into account or recognized, provided
that there be no duplication of such benefits as are provided under any employee
benefit plans, practices, or policies of Bank that continue in effect following
the Effective Time.
 
6.12  NOTIFICATION OF CERTAIN MATTERS.  Each of Bank and USB shall give prompt
notice to the other of any fact, event or circumstance known to it that:
 
        (i) individually or taken together with all other facts, events and
    circumstances known to it, has had a Material Adverse Effect with respect to
    it, or
 
        (ii) would cause or constitute a material breach of any of its
    representations, warranties, covenants or agreements contained herein.
 
6.13  CERTAIN LOANS AND RELATED MATTERS.  Bank will furnish to USB a complete
and accurate list as of the end of each calendar month after December 31, 1998,
within 25 business days after the end of each such calendar month, of (a) all of
Bank's periodic internal credit quality reports prepared during such
 
                                      A-28
<PAGE>
calendar month (which reports will be prepared in a manner consistent with past
practices), (b) all loans of Bank classified as non-accrual, as restructured, as
90 days past due, as still accruing and doubtful of collection or any comparable
classification, (c) all OREO, including in-substance foreclosures and real
estate in judgment, (d) any current repurchase obligations of Bank with respect
to any loans, loan participations or state or municipal obligations or revenue
bonds and (e) any standby letters of credit issued by Bank.
 
6.14  MONTHLY FINANCIAL STATEMENTS.  Bank shall furnish USB with Bank's balance
sheets as of the end of each calendar month after December 31, 1998 and the
related statements of income, within 25 business days after the end of each such
calendar month. Such financial statements shall be prepared on a basis
consistent with the Regulatory Documents and on a consistent basis during the
periods involved and shall fairly present the financial positions of Bank as of
the dates thereof and the results of operations of Bank for the periods then
ended.
 
6.15  UPDATED DISCLOSURE SCHEDULE.  On a date 15 business days prior to the
Effective Date and on the Effective Date, USB and Bank shall modify any
Disclosure Schedule to this Agreement for the purpose of making the
representations and warranties to which any such Disclosure Schedule relates
true and correct in all material respects as of such date, whether to correct
any misstatement or omission in any Schedule or to reflect any additional
information obtained by USB or Bank subsequent to the date any Disclosure
Schedule was previously delivered. Notwithstanding the foregoing, any updated
Disclosure Schedule shall not have the effect of making any representation or
warranty contained in this Agreement true and correct in all material respects
for purposes of Sections 7.02(a) and 7.03(a) hereof.
 
                                  ARTICLE VII
                    CONDITIONS TO CONSUMMATION OF THE MERGER
 
7.01  CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE MERGER.  The
respective obligation of each of USB and Bank to consummate the Merger is
subject to the fulfillment or written waiver by USB and Bank prior to the
Effective Time of each of the following conditions:
 
    (a)  SHAREHOLDER APPROVAL.  This Agreement and the Merger shall have been
duly adopted by the requisite vote of the shareholders of Bank.
 
    (b)  REGULATORY APPROVALS.  All regulatory approvals required to consummate
the Merger and the other transactions contemplated hereby shall have been
obtained and shall remain in full force and effect and all statutory waiting
periods in respect thereof shall have expired.
 
    (c)  NO INJUNCTION.  No Governmental Authority of competent jurisdiction
shall have enacted, issued, promulgated, enforced or entered any statute, rule
or regulation, or any judgment, decree, injunction or other order (whether
temporary, preliminary or permanent) (an "Injunction") which is in effect and
prohibits consummation of the transactions contemplated by this Agreement.
 
    (d)  REGISTRATION STATEMENT; NEW YORK STOCK EXCHANGE LISTING.  The
Registration Statement shall have become effective under the Securities Act and
no stop order suspending the effectiveness of the Registration Statement shall
have been issued and no proceedings for that purpose shall have been initiated
or threatened by the SEC. The USB Common Stock to be issued in the Merger shall
have been approved for listing on USB's Stock Exchange, subject to official
notice of issuance.
 
    (e)  BLUE SKY APPROVALS.  All permits and other authorizations under state
securities laws necessary to consummate the transactions contemplated hereby and
to issue the shares of USB Common Stock to be issued in the Merger shall have
been received and be in full force and effect.
 
                                      A-29
<PAGE>
7.02  CONDITIONS TO OBLIGATION OF BANK.  The obligation of Bank to consummate
the Merger is also subject to the fulfillment or written waiver by Bank prior to
the Effective Time of each of the following conditions:
 
    (a)  REPRESENTATIONS AND WARRANTIES.  (i) Subject to Section 5.02, the
representations and warranties of USB set forth in this Agreement shall be true
and correct as of the date of this Agreement and as of the Effective Date as
though made on and as of the Effective Date (except that representations and
warranties that by their terms speak only as of the date of this Agreement or
some other date shall be true and correct as of such date); and (ii) Bank shall
have received a certificate, dated the Effective Date, signed on behalf of USB
by the Chief Executive Officer and the Chief Financial Officer of USB to such
effect.
 
    (b)  PERFORMANCE OF OBLIGATIONS OF USB.  USB shall have performed in all
material respects all obligations required to be performed by it under this
Agreement at or prior to the Effective Time, and Bank shall have received a
certificate, dated the Effective Date, signed on behalf of USB by the Chief
Executive Officer and the Chief Financial Officer of USB to such effect.
 
    (c)  OPINION OF BANK'S COUNSEL.  Bank shall have received an opinion of
Skadden, Arps, Slate, Meagher & Flom LLP, special counsel to Bank, in form and
substance reasonably satisfactory to Bank, dated the Effective Date,
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 constitutes a "reorganization"
within the meaning of Section 368 of the Code. In rendering its opinion,
Skadden, Arps, Slate, Meagher & Flom LLP may require and rely upon
representations and covenants, including those contained in letters from Bank,
USB, US Bank and others reasonably satisfactory in form and substance to
Skadden, Arps, Slate, Meagher & Flom LLP.
 
    (d)  NO PENDING GOVERNMENTAL ACTIONS.  No proceeding initiated by any
Governmental Authority seeking an Injunction shall be pending.
 
7.03  CONDITIONS TO OBLIGATION OF USB.  The obligation of USB to consummate the
Merger is also subject to the fulfillment or written waiver by USB prior to the
Effective Time of each of the following conditions:
 
    (a)  REPRESENTATIONS AND WARRANTIES.  (i) Subject to Section 5.02, the
representations and warranties of Bank set forth in this Agreement shall be true
and correct as of the date of this Agreement and as of the Effective Date as
though made on and as of the Effective Date (except that representations and
warranties that by their terms speak only as of the date of this Agreement or
some other date shall be true and correct as of such date); and (ii) USB shall
have received a certificate, dated the Effective Date, signed on behalf of Bank
by the Chief Executive Officer and the Chief Financial Officer of Bank to such
effect.
 
    (b)  PERFORMANCE OF OBLIGATIONS OF BANK.  Bank shall have performed in all
material respects all obligations required to be performed by it under this
Agreement at or prior to the Effective Time; provided that Bank shall have
performed its agreements contained in Sections 4.01(c) and (d) in all respects;
and USB shall have received a certificate, dated the Effective Date, signed on
behalf of Bank by the Chief Executive Officer and the Chief Financial Officer of
Bank to such effect.
 
    (c)  OPINION OF USB'S COUNSEL.  USB shall have received an opinion of Dorsey
& Whitney LLP, special counsel to USB, dated the Effective Date, to the effect
that, on the basis of facts, representations and assumptions set forth in such
opinion, the Merger constitutes a "reorganization" within the meaning of Section
368 of the Code. In rendering its opinion, Dorsey & Whitney LLP may require and
rely upon representations and covenants contained in letters from Bank, US Bank,
USB and others.
 
    (d)  NO PENDING GOVERNMENTAL ACTIONS.  No proceeding initiated by any
Governmental Authority seeking an Injunction shall be pending.
 
                                      A-30
<PAGE>
                                  ARTICLE VIII
                                  TERMINATION
 
8.01  TERMINATION.  This Agreement may be terminated, and the Merger may be
abandoned, whether before or after approval of the matters presented in
connection with the Merger by the shareholders of Bank.
 
    (a)  MUTUAL CONSENT.  At any time prior to the Effective Time, by the mutual
consent of USB and Bank, if the Board of Directors of each so determines by vote
of a majority of the members of its entire Board.
 
    (b)  BREACH.  At any time prior to the Effective Time, by USB or Bank, upon
written notice to the other party, in the event of either:
 
        (i) a breach by the other party of any representation or warranty
    contained herein (subject to the standard set forth in Section 5.02), which
    breach cannot be or has not been cured within 30 days after the giving of
    written notice to the breaching party of such breach, or
 
        (ii) a breach by the other party of any of the covenants or agreements
    contained herein, which breach cannot be or has not been cured within 30
    days after the giving of written notice to the breaching party of such
    breach, provided that such breach (whether under (i) or (ii)) individually
    or in the aggregate with other breaches, has had or is reasonably expected
    to have a Material Adverse Effect on the breaching party.
 
    (c)  DELAY.  At any time prior to the Effective Time, by USB or Bank, in the
event that the Merger is not consummated by September 30, 1999, except to the
extent that the failure of the Merger then to be consummated arises out of or
results from the failure of the party seeking to terminate pursuant to this
Section 8.01(c) to perform or observe the covenants and agreements of such party
set forth herein.
 
    (d)  NO APPROVAL.  By Bank or USB, in the event:
 
        (i) the approval of any Governmental Authority required for consummation
    of the Merger and the other transactions contemplated by this Agreement
    shall have been denied by final nonappealable action of such Governmental
    Authority, or
 
        (ii) the shareholder approval required by Section 7.01(a) herein is not
    obtained at the Bank Meeting.
 
    (e)  FAILURE TO RECOMMEND, ETC.  At any time prior to the Bank Meeting, by
USB if the Bank Board shall have failed to make its recommendation referred to
in Section 6.02, withdrawn such recommendation or modified or changed such
recommendation in a manner adverse in any respect to the interests of USB.
 
8.02  EFFECT OF TERMINATION AND ABANDONMENT.  Termination will not relieve a
breaching party from liability for any willful breach of this Agreement giving
rise to such termination.
 
8.03  TERMINATION FEE.
 
    (a) Bank agrees to pay USB the sum of $10,000,000 (the "Termination Fee")
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 a Fee Termination Event (as hereinafter defined). Each of
the following shall be a Fee Termination Event: (i) the Effective Time; (ii)
termination of this Agreement in accordance with the provisions hereof if such
termination occurs prior to the occurrence of an Initial Triggering Event except
a termination by USB pursuant to Section 8.01(b) of the Agreement; or (iii) the
passage of twelve (12) months after termination of this
 
                                      A-31
<PAGE>
Agreement if such termination is concurrent with or follows the occurrence of an
Initial Triggering Event or is a termination by USB pursuant to Section 8.01(b).
Notwithstanding anything to the contrary contained herein, (i) the Termination
Fee shall not be payable at any time when USB shall be in material breach of any
of its covenants or agreements contained in this Agreement such that Bank shall
be entitled to terminate this Agreement pursuant to Section 8.01(b) and (ii)
this Section 8.03 shall automatically cease to be effective upon the termination
of this Agreement by Bank pursuant to Section 8.01(b) thereof as a result of the
material breach by USB of its covenants or agreements contained in this
Agreement.
 
    (b) The term "Initial Triggering Event" shall mean any of the following
events or transactions occurring on or after the date hereof:
 
        (i) Bank, without having received USB'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
    Section 8.03 having the meaning assigned thereto in Sections 3(a)(9) and
    13(d)(3) of the Exchange Act, and the rules and regulations thereunder)
    other than USB or any of its Subsidiaries (each an "USB Subsidiary") or the
    Bank Board shall have recommended that the shareholders of Bank approve or
    accept any Acquisition Transaction other than as contemplated by this
    Agreement. For purposes of this Section 8.03, (a) "Acquisition Transaction"
    shall mean (x) a merger or consolidation, or any similar transaction,
    involving Bank or any Significant Subsidiary (as defined in Rule 1-02 of
    Regulation S-X promulgated by the SEC) of Bank, (y) a purchase, lease or
    other acquisition of all or substantially all of the assets or deposits of
    Bank or any Significant Subsidiary of Bank, or (z) a purchase or other
    acquisition (including by way of merger, consolidation, share exchange or
    otherwise) of securities representing 20% or more of the voting power of
    Bank or any Significant Subsidiary of Bank and (b) for purposes of this
    Section 8.03, "Subsidiary" shall have the meaning set forth in Rule 12b-2
    under the Exchange Act; or
 
        (ii) The Bank Board shall have failed to make, withdrawn or modified (or
    publicly announced its intention to withdraw or modify) in any manner
    adverse to USB its recommendation that the shareholders of Bank approve the
    transactions contemplated by this Agreement, or Bank or any Bank Subsidiary,
    without having received USB's prior written consent, shall have authorized,
    recommended, proposed (or publicly announced its intention to authorize,
    recommend or propose) an agreement to engage in an Acquisition Transaction
    with any person other than USB or an USB Subsidiary; or
 
       (iii) Any person other than USB or an USB subsidiary shall have made a
    proposal to Bank or its shareholders to engage in an Acquisition Transaction
    and such proposal shall have been publicly announced.
 
    (c) The term "Subsequent Triggering Event" shall mean the signing of a
definitive agreement with respect to or the completion of an Acquisition
Transaction (except that the percentage for purposes of part (z) of clause (a)
of Section 8.03(b)(i) shall be 51%) which has been approved by resolution of the
Bank Board.
 
    (d) Bank shall notify USB 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 Bank shall not be
a condition to the right of USB to demand payment of the Termination Fee.
 
    (e) The Termination Fee shall supplant and supersede any damages or other
amounts then payable by Bank to USB under this Agreement. If USB collects the
Termination Fee, USB shall be deemed to have waived the right to damages against
Bank for breach of this Agreement in excess of the Termination Fee. If Bank
shall previously have paid damages to USB in respect of a breach of this
 
                                      A-32
<PAGE>
Agreement by Bank, the amount of the Termination Fee payable under this Section
8.03 shall be reduced by the amount of paid damages and any excess damages shall
be repaid to Bank.
 
                                   ARTICLE IX
                                 MISCELLANEOUS
 
9.01  SURVIVAL.  No representations, warranties, agreements and covenants
contained in this Agreement shall survive the Effective Time (other than those
covenants and agreements which by their terms apply in whole or in part after
the Effective Time, and this Article IX which shall survive the Effective Time)
or the termination of this Agreement (other than Sections 6.05(b), 8.02 and
8.03, and this Article IX, each of which shall survive such termination).
 
9.02  WAIVER; AMENDMENT.
 
    (a) At any time prior to the Effective Time, each of the parties hereto, by
action taken or authorized by its Board of Directors, may, to the extent legally
allowed, (i) extend the time for the performance of any of the obligations or
other acts of the other party hereto, (ii) waive any inaccuracies in the
representations and warranties of the other party contained herein or in any
document delivered pursuant hereto and (iii) waive compliance with any of the
agreements or conditions of the other party contained herein. 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.
 
    (b) Prior to the Effective Time, any provision of this Agreement may be
amended or modified at any time, by an agreement in writing between the parties
hereto executed in the same manner as this Agreement, except that after the Bank
Meeting, this Agreement may not be amended if it would violate the CGCL or
reduce the amount or change the form of the consideration to be received by Bank
shareholders in the Merger.
 
9.03  COUNTERPARTS.  This Agreement may be executed in one or more counterparts,
each of which shall be deemed to constitute an original.
 
9.04  GOVERNING LAW.  This Agreement shall be governed by, and interpreted in
accordance with, the laws of the State of Delaware applicable to contracts made
and to be performed entirely within such State (except to the extent that
mandatory provisions of Federal law apply). Venue for any action between the
parties to this Agreement shall be a court of competent jurisdiction in the City
of San Diego, California.
 
9.05  EXPENSES.  Each party hereto will bear all expenses incurred by it in
connection with this Agreement and the transactions contemplated hereby.
 
9.06  NOTICES.  All notices, requests and other communications hereunder to a
party shall be in writing and shall be deemed given if personally delivered,
telecopied (with confirmation) or mailed by registered or certified mail (return
receipt requested) to such party at its address set forth below or such other
address as such party may specify by notice to the parties hereto.
 
<TABLE>
<S>                           <C>
If to Bank, to:               Bank of Commerce
                              600 West Broadway
                              San Diego, CA 92101
                              Attn: Peter Q. Davis
                              Facsimile: (619) 232-2360
</TABLE>
 
                                      A-33
<PAGE>
<TABLE>
<S>                           <C>
With a copy to:               Higgs, Fletcher & Mack LLP
                              401 West A Street, Suite 2600
                              San Diego, California 92101
                              Attention: Kurt L. Kicklighter, Esq.
                              Facsimile: (619) 696-1410
 
If to USB or US Bank, to:     U.S. Bancorp
                              U.S. Bank Place
                              601 Second Avenue South
                              Minneapolis, MN 55402
                              Facsimile: (612) 973-2446
 
With a copy to:               Dorsey & Whitney LLP
                              Pillsbury Center South
                              220 South Sixth Street
                              Minneapolis, Minnesota 55402-1498
                              Facsimile: (612) 340-2868
</TABLE>
 
9.07  ENTIRE UNDERSTANDING; NO THIRD PARTY BENEFICIARIES.  This Agreement
represents the entire understanding of the parties hereto with reference to the
transactions contemplated hereby and thereby and this Agreement supersedes any
and all other oral or written agreements heretofore made, in each case other
than the Confidentiality Agreement. Except as otherwise expressly provided
herein, nothing in this Agreement is intended to confer upon any person, other
than the parties hereto or their respective successors, any rights, remedies,
obligations or liabilities under or by reason of this Agreement.
 
9.08  INTERPRETATION; EFFECT.  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 are not part of this Agreement. Whenever the words "include,"
"includes" or "including" are used in this Agreement, they shall be deemed to be
followed by the words "without limitation." The phrases "the date of this
Agreement", "the date hereof" and terms of similar import, unless the context
otherwise requires, shall be deemed to refer to February 18, 1999, and shall not
be deemed to refer to the date of any amendment and restatement.
 
9.09  ENFORCEMENT OF AGREEMENT.  The parties hereto agree that irreparable
damage would occur in the event that the provisions contained in Section 6.05(b)
of this Agreement were not performed in accordance with its specific terms or
was otherwise breached. It is accordingly agreed that the parties shall be
entitled to an injunction or injunctions to prevent breaches of Section 6.05(b)
of this Agreement and to enforce specifically the terms and provisions thereof
in any court of the United States or any state having jurisdiction, this being
in addition to any other remedy to which they are entitled at law or in equity.
 
                                      A-34
<PAGE>
    IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed in counterparts by their duly authorized officers, all as of the day
and year first above written.
 
<TABLE>
<S>                             <C>  <C>
                                BANK OF COMMERCE
 
                                By   /s/ PETER Q. DAVIS
                                     -----------------------------------------
                                     Name:  Peter Q. Davis
                                     Title:   Chairman, Chief Executive
                                     Officer,
                                     and President
 
                                U.S. BANCORP
 
                                By   /s/ SUSAN E. LESTER
                                     -----------------------------------------
                                     Name:  Susan E. Lester
                                     Title:   Chief Financial Officer
</TABLE>
 
                                      A-35
<PAGE>
                                   APPENDIX B
                    OPINION OF KEEFE, BRUYETTE & WOODS, INC.
 
                                   March 19, 1999
 
The Board of Directors
Bank of Commerce
600 West Broadway
Suite 100
 
San Diego, CA 92101
 
Members of the Board:
 
    You have requested our opinion as investment bankers as to the fairness,
from a financial point of view, to the common stockholders of Bank of Commerce
("BOC") of the exchange ratio in the proposed merger ("the Merger") of BOC with
and into US Bancorp ("USB") pursuant to the Agreement and Plan of Reorganization
("Agreement") dated as of February 18, 1999 between BOC and USB. It is our
understanding that the Merger will be structured as a purchase under generally
accepted accounting principles.
 
    As is more specifically set forth in the Agreement, upon consummation of the
Merger, each outstanding share of the common stock of BOC, no par value per
share ("BOC Common Stock"), will be converted into and exchanged for 0.60 (the
"Exchange Ratio") shares of USB ("USB Common Stock"), $1.25 par value per share.
 
    Keefe, Bruyette & Woods, Inc. ("KBW"), as part of its investment banking
business, is continually engaged in the valuation of bank holding companies and
banks, thrift holding companies and thrifts and their securities in connection
with mergers and acquisitions, underwriting, private placements, competitive
bidding processes, market making as a NASD market maker, and valuations for
various other purposes. As specialists in the securities of banking companies we
have experience in, and knowledge of, the valuation of banking enterprises. In
the ordinary course of our business as a broker-dealer, we may, from time to
time, trade the securities of USB or BOC, for our own account, and for the
accounts of our customers and, accordingly, may at any time hold a long or short
position in such securities. To the extent we have any such positions as of the
date of this opinion it has been disclosed to BOC. KBW has served as financial
advisor to BOC in the negotiation of the Merger Agreement and in rendering this
fairness opinion and will receive a fee from BOC for those services.
 
    In arriving at our opinion, we have reviewed, analyzed and relied upon
material bearing upon the financial and operating condition of USB and BOC and
the Merger, including among other things, the following:
 
     i. Reviewed the Agreement;
 
     ii. Reviewed certain historical financial and other information concerning
         BOC for the three years ending December 31, 1997, including BOC's
         Annual Report to Shareholders and Annual Reports on Forms 10-K, and
         interim quarterly reports on Form 10-Q;
 
                                      B-1
<PAGE>
    iii. Reviewed certain historical financial and other information concerning
         USB for the three years ending December 31, 1997, including USB's
         Annual Report to Stockholders and Annual Reports on Forms 10-K, and
         interim quarterly reports on Form 10-Q;
 
     iv. Reviewed and studied the historical stock prices and trading volumes of
         the common stock of both BOC and USB;
 
     v. Held discussions with senior management of BOC [and USB] with respect to
        their past and current financial performance, financial condition and
        future prospects;
 
     vi. Reviewed certain internal financial data, projections and other
         information of BOC [and USB], including financial projections prepared
         by management;
 
    vii. Analyzed certain publicly available information of other financial
         institutions that we deemed comparable or otherwise relevant to our
         inquiry, and compared BOC and USB from a financial point of view with
         certain of these institutions;
 
   viii. Reviewed the financial terms of certain recent business combinations in
         the banking industry that we deemed comparable or otherwise relevant to
         our inquiry; and
 
     ix. Conducted such other financial studies, analyses and investigations and
         reviewed such other information as we deemed appropriate to enable us
         to render our opinion.
 
    In conducting our review and arriving at our opinion, we have relied upon
the accuracy and completeness of all of the financial and other information
provided to us or publicly available and we have not assumed any responsibility
for independently verifying the accuracy or completeness of any such
information. We have relied upon the management of BOC as to the reasonableness
and achievability of the financial and operating forecasts and projections (and
the assumptions and bases therefor) provided to us, and we have assumed that
such forecasts and projections reflect the best currently available estimates
and judgments of such managements. We are not experts in the independent
verification of the adequacy of allowances for loan and lease losses and we have
assumed that the current and projected aggregate reserves for loan and lease
losses for BOC and USB are adequate to cover such losses. We did not make or
obtain any independent evaluations or appraisals of any assets or liabilities of
BOC, USB, or any of their respective subsidiaries nor did we verify any of BOC's
or USB's books or records or review any individual loan or credit files.
 
    We have considered such financial and other factors as we have deemed
appropriate under the circumstances, including, among others, the following: (i)
the historical and financial position and results of operations of BOC and USB;
(ii) the assets and liabilities of BOC and USB; and (iii) the nature and terms
of certain other merger transactions involving banks and bank holding companies.
We have also taken into account our assessment of general economic, market and
financial conditions and our experience in other transactions, as well as our
experience in securities valuation and knowledge of the banking industry
generally. Our opinion is necessarily based upon conditions as they exist and
can be evaluated on the date hereof and the information made available to us
through the date hereof.
 
    Based upon and subject to the foregoing, it is our opinion that, as of the
date hereof, the Exchange Ratio is fair, from a financial point of view, to BOC
and its shareholders.
 
                                          Very truly yours,
                                          Keefe, Bruyette & Woods, Inc.
 
                                      B-2
<PAGE>
                                   APPENDIX C
      CALIFORNIA CORPORATION CODE SECTION DEALING WITH DISSENTER'S RIGHTS
 
SECTION1300. RIGHT TO REQUIRE PURCHASE--"DISSENTING SHARES" AND "DISSENTING
  SHAREHOLDER" DEFINED.
 
    (a) If the approval of the outstanding shares (Section 152) of a corporation
       is required for a reorganization under subdivisions (a) and (b) or
       subdivision (e) or (f) of Section 1201, each shareholder of the
       corporation entitled to vote on the transaction and each shareholder of a
       subsidiary corporation in a short-form merger may, by complying with this
       chapter, require the corporation in which the shareholder holds shares to
       purchase for cash at their fair market value the shares owned by the
       shareholder which are dissenting shares as defined in subdivision (b).
       The fair market value shall be determined as of the day before the first
       announcement of the terms of the proposed reorganization or short-form
       merger, excluding any appreciation or depreciation in consequence of the
       proposed action, but adjusted for any stock split, reverse stock split or
       share dividend which becomes effective thereafter.
 
    (b) As used in this chapter, "dissenting shares" means shares which come
       within all of the following descriptions:
 
       (1) Which were not immediately prior to the reorganization or short-form
           merger either (A) listed on any national securities exchange
           certified by the Commissioner of Corporations under subdivision (o)
           of Section 25100 or (B) listed on the list of OTC margin stocks
           issued by the Board of Governors of the Federal Reserve System, and
           the notice of meeting of shareholders to act upon the reorganization
           summarizes this section and Sections 1301, 1302, 1303 and 1304;
           provided, however, that this provision does not apply to any shares
           with respect to which there exists any restriction on transfer
           imposed by the corporation or by any law or regulation; and provided,
           further, that this provision does not apply to any class of shares
           described in subparagraph (A) or (B) if demands for payment are filed
           with respect to 5 percent or more of the outstanding shares of that
           class.
 
       (2) Which were outstanding on the date for the determination of
           shareholders entitled to vote on the reorganization and (A) were not
           voted in favor of the reorganization or, (B) if described in
           subparagraph (A) or (B) of paragraph (1) (without regard to the
           provisos in that paragraph), were voted against the reorganization,
           or which were held of record on the effective date of a short-form
           merger; provided, however, that subparagraph (A) rather than
           subparagraph (B) of this paragraph applies in any case where the
           approval required by Section 1201 is sought by written consent rather
           than at a meeting.
 
       (3) Which the dissenting shareholder has demanded that the corporation
           purchase at their fair market value, in accordance with Section 1301.
 
       (4) Which the dissenting shareholder has submitted for endorsement, in
           accordance with Section 1302.
 
    (c) As used in this chapter, "dissenting shareholder" means the recordholder
       of dissenting shares and includes a transferee of record.
 
SECTION1304. DISSENTER'S ACTION TO ENFORCE PAYMENT.
 
    (a) If the corporation denies that the shares are dissenting shares, or the
       corporation and the shareholder fail to agree upon the fair market value
       of the shares, then the shareholder
 
                                      C-1
<PAGE>
       demanding purchase of such shares as dissenting shares or any interested
       corporation, within six months after the date on which notice of the
       approval by the outstanding shares (Section 152) or notice pursuant to
       subdivision (i) of Section 1110 was mailed to the shareholder, but not
       thereafter, may file a complaint in the superior court of the proper
       county praying the court to determine whether the shares are dissenting
       shares or the fair market value of the dissenting shares or both or may
       intervene in any action pending on such a complaint.
 
    (b) Two or more dissenting shareholders may join as plaintiffs or be joined
       as defendants in any such action and two or more such actions may be
       consolidated.
 
    (c) On the trial of the action, the court shall determine the issues. If the
       status of the shares as dissenting shares is in issue, the court shall
       first determine that issue. If the fair market value of the dissenting
       shares is in issue, the court shall determine, or shall appoint one or
       more impartial appraisers to determine, the fair market value of the
       shares.
 
                                      C-2
<PAGE>
                                   APPENDIX D
               SECTION 215A OF TITLE 12 OF THE UNITED STATES CODE
 
SECTION 215A. MERGER OF NATIONAL BANKS OR STATE BANKS INTO NATIONAL BANKS
 
    (A) APPROVAL OF COMPTROLLER, BOARD AND SHAREHOLDERS; MERGER AGREEMENT;
       NOTICE; CAPITAL STOCK; LIABILITY OF RECEIVING ASSOCIATION
 
    One or more national banking associations or one or more State banks, with
the approval of the Comptroller, under an agreement not inconsistent with this
subchapter, may merge into a national banking association located within the
same State, under the charter of the receiving association. The merger agreement
shall--
 
    (1) be agreed upon in writing by a majority of the board of directors of
       each association or State bank participating in the plan of merger;
 
    (2) be ratified and confirmed by the affirmative vote of the shareholders of
       each such association or State bank owning at least two-thirds of its
       capital stock outstanding, or by a greater proportion of such capital
       stock in the case of a State bank if the laws of the State where it is
       organized so require, at a meeting to be held on the call of the
       directors, after publishing notice of the time, place, and object of the
       meeting for four consecutive weeks in a newspaper of general circulation
       published in the place where the association or State bank is located,
       or, if there is no such newspaper, then in the newspaper of general
       circulation published nearest thereto, and after sending such notice to
       each shareholder of record by certified or registered mail at least ten
       days prior to the meeting, except to those shareholders who specifically
       waive notice, but any additional notice shall be given to the
       shareholders of such State bank which may be required by the laws of the
       State where it is organized. Publication of notice may be waived, in
       cases where the Comptroller determines that an emergency exists
       justifying such waiver, by unanimous action of the shareholders of the
       association or State banks;
 
    (3) specify the amount of the capital stock of the receiving association,
       which shall not be less than that required under existing law for the
       organization of a national bank in the place in which it is located and
       which will be outstanding upon completion of the merger, the amount of
       stock (if any) to be allocated, and cash (if any) to be paid, to the
       shareholders of the association or State bank being merged into the
       receiving association; and
 
    (4) provide that the receiving association shall be liable for all
       liabilities of the association or State bank being merged into the
       receiving association.
 
    (B) DISSENTING SHAREHOLDERS
 
    If a merger shall be voted for at the called meetings by the necessary
majorities of the shareholders of each association or State bank participating
in the plan of merger, and thereafter the merger shall be approved by the
Comptroller, any shareholder of any association or State bank to be merged into
the receiving association who has voted against such merger at the meeting of
the association or bank of which he is a stockholder, or has given notice in
writing at or prior to such meeting to the presiding officer that he dissents
from the plan of merger, shall be entitled to receive the value of the shares so
held by him when such merger shall be approved by the Comptroller upon written
request made to the receiving association at any time before thirty days after
the date of consummation of the merger, accompanied by the surrender of his
stock certificates.
 
    (C) VALUATION OF SHARES
 
    The value of the shares of any dissenting shareholder shall be ascertained,
as of the effective date of the merger, by an appraisal made by a committee of
three persons, composed of (1) one selected by
 
                                      D-1
<PAGE>
the vote of the holders of the majority of the stock, the owners of which are
entitled to payment in cash; (2) one selected by the directors of the receiving
association; and (3) one selected by the two so selected. The valuation agreed
upon by any two of the three appraisers shall govern. If the value so fixed
shall not be satisfactory to any dissenting shareholder who has requested
payment, that shareholder may, within five days after being notified of the
appraised value of his shares, appeal to the Comptroller, who shall cause a
reappraisal to be made which shall be final and binding as to the value of the
shares of the appellant.
 
    (D) APPLICATION TO SHAREHOLDERS OF MERGING ASSOCIATIONS: APPRAISAL BY
       COMPTROLLER; EXPENSES OF RECEIVING ASSOCIATION; SALE AND RESALE OF
       SHARES; STATE APPRAISAL AND MERGER LAW
 
    If, within ninety days from the date of consummation of the merger, for any
reason one or more of the appraisers is not selected as herein provided, or the
appraisers fail to determine the value of such shares, the Comptroller shall
upon written request of any interested party cause an appraisal to be made which
shall be final and binding on all parties. The expenses of the Comptroller in
making the reappraisal or the appraisal, as the case may be, shall be paid by
the receiving association. The value of the shares ascertained shall be promptly
paid to the dissenting shareholders by the receiving association. The shares of
stock of the receiving association which would have been delivered to such
dissenting shareholders had they not requested payment shall be sold by the
receiving association at an advertised public auction, and the receiving
association shall have the right to purchase any of such shares at such public
auction, if it is the highest bidder therefor, for the purpose of reselling such
shares within thirty days thereafter to such person or persons and at such price
not less than par as its board of directors by resolution may determine. If the
shares are sold at public auction at a price greater than the amount paid to the
dissenting shareholders, the excess in such sale price shall be paid to such
dissenting shareholders. The appraisal of such shares of stock in any State bank
shall be determined in the manner prescribed by the law of the State in such
cases, rather than as provided in this section, if such provision is made in the
State law; and no such merger shall be in contravention of the law of the State
under which such bank is incorporated. The provisions of this subsection shall
apply only to shareholders of (and stock owned by them in) a bank or association
being merged into the receiving association.
 
    (E) STATUS OF RECEIVING ASSOCIATION; PROPERTY RIGHTS AND INTERESTS VESTED
       AND HELD AS FIDUCIARY
 
    The corporate existence of each of the merging banks or banking associations
participating in such merger shall be merged into and continued in the receiving
association and such receiving association shall be deemed to be the same
corporation as each bank or banking association participating in the merger. All
rights, franchises, and interests of the individual merging banks or banking
associations in and to every type of property (real, personal, and mixed) and
chooses in action shall be transferred to and vested in the receiving
association by virtue of such merger without any deed or other transfer. The
receiving association, upon the merger and without any order or other action on
the part of any court or otherwise, shall hold and enjoy all rights of property,
franchises, and interests, including appointments, designations, and
nominations, and all other rights and interests as trustee, executor,
administrator, registrar of stocks and bonds, guardian of estates, assignee,
receiver, and committee of estates of lunatics, and in every other fiduciary
capacity, in the same manner and to the same extent as such rights, franchises,
and interests were held or enjoyed by any one of the merging banks or banking
associations at the time of the merger, subject to the conditions hereinafter
provided.
 
    (F) REMOVAL AS FIDUCIARY; DISCRIMINATION
 
    Where any merging bank or banking association, at the time of the merger,
was acting under appointment of any court as trustee, executor, administrator,
registrar of stocks and bonds, guardian of estates, assignee, receiver, or
committee of estates of lunatics, or in any other fiduciary capacity, the
receiving association shall be subject to removal by a court of competent
jurisdiction in the same manner and to the same extent as was such merging bank
or banking association prior to the merger.
 
                                      D-2
<PAGE>
Nothing contained in this section shall be considered to impair in any manner
the right of any court to remove the receiving association and to appoint in
lieu thereof a substitute trustee, executor, or other fiduciary, except that
such right shall not be exercised in such a manner as to discriminate against
national banking associations, nor shall any receiving association be removed
solely because of the fact that it is a national banking association.
 
    (G) ISSUANCE OF STOCK BY RECEIVING ASSOCIATION; PREEMPTIVE RIGHTS
 
    Stock of the receiving association may be issued as provided by the terms of
the merger agreement, free from any preemptive rights of the shareholders of the
respective merging banks.
 
                                      D-3
<PAGE>
                                    PART II
 
INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    Under Delaware law, U.S. Bancorp will indemnify its directors and officers
under certain circumstances against all expenses and liabilities incurred by
them as a result of suits brought against them as such directors and officers.
The indemnified directors and officers must act in good faith and in a manner
they reasonably believe to be in the best interests of USB, and, with respect to
any criminal action or proceeding, have no reasonable cause to believe their
conduct was unlawful. USB will not indemnify directors and officers for expenses
in respect of any matter as to which the indemnified directors and officers
shall have been adjudged to be liable to USB, unless the court in which such
action or suit was brought shall otherwise determine. USB may indemnify officers
and directors only as authorized in each specific case upon a determination by
the stockholders or disinterested directors that indemnification is proper
because the indemnitee has met the applicable statutory standard of conduct.
 
    Article Ninth of the USB Restated Certificate of Incorporation, as amended,
provides that a director shall not be liable to USB or its stockholders for
monetary damages for a breach of fiduciary duty as a director, except for
liability: (i) for any breach of the director's duty of loyalty to USB or its
stockholders, (ii) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii) under the Delaware
statutory provision making directors personally liable for unlawful payment of
dividends or unlawful stock repurchases or redemptions, or (iv) for any
transaction from which the directors derived an improper personal benefit.
 
    The Bylaws of USB provide that the officers and directors of USB shall be
indemnified to the full extent permitted by Delaware law, as amended from time
to time. The Board of Directors has discretion to indemnify any employee of USB
for actions arising by reason of the employee's employment with USB. USB shall
pay expenses incurred by officers and directors in defending actions in advance
of any final disposition if such officer or director agrees to repay such
amounts if it is ultimately determined that he or she is not entitled to be
indemnified under Delaware law. USB maintains a standard policy of officers' and
directors' liability insurance.
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
<TABLE>
<C>        <S>
       (A) EXHIBITS.
 
      2.1  Agreement and Plan of Reorganization dated February 18, 1999, as amended and restated
           as of March 26, 1999, by and between USB and BOC. (Included in Proxy
           Statement/Prospectus as Appendix A.) The registrant agrees to furnish a supplemental
           copy of omitted schedules to the Commission upon request.
 
      4.1  Certificate of Designation and Terms of Term Participating Preferred Stock of U.S.
           Bancorp
 
      4.2  Bylaws of USB, as amended. (Incorporated by reference to Exhibit 3.1 to the report on
           Form 10-Q for the quarter ended June 30, 1998.)
 
      4.3  [Pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, copies of instruments defining
           the rights of holders of long-term debt are not filed. U.S. Bancorp agrees to furnish
           a copy thereof to the Securities and Exchange Commission upon request.]
 
      4.4  Warrant Agreement, dated as of October 2, 1995, between U.S. Bancorp and First Chicago
           Trust Company of New York, as Warrant Agent and Form of Warrant. (Incorporated by
           reference to Exhibits 4.18 and 4.19 to Registration Statement on Form S-3, File No.
           33-61667.)
</TABLE>
 
                                      II-1
<PAGE>
<TABLE>
<C>        <S>
      4.5  Warrant Agreement, dated as of November 20, 1990, between Metropolitan Financial
           Corporation and American Stock Transfer and Trust Company, as Warrant Agent;
           Supplemental Warrant Agreement, dated as of January 24, 1995, between U.S. Bancorp and
           American Stock Transfer and Trust Company, as Warrant Agent; and Form of Warrant.
           (Incorporated by reference to Exhibit 4E to report on Form 10-K for the year ended
           December 31, 1996.)
 
      5.1  Opinion and consent of Dorsey & Whitney LLP as to legality of the securities being
           registered (to be filed by amendment).
 
      8.1  Opinion and consent of Dorsey & Whitney LLP as to the correctness of the tax
           disclosure sections in this Form S-4 (to be filed by amendment).
 
       12  Statement re: Computation of Ratio of Earnings to Fixed Charges. (Incorporated by
           reference to Exhibit 12 to report on Form 10-K for the year ended December 31, 1998.)
 
     23.1  Consent of Dorsey & Whitney LLP (Included in Exhibit 5.1.)
 
     23.2  Consent of Ernst & Young LLP (relating to financial statements of USB).
 
     23.3  Consent of Deloitte & Touche, LLP (relating to financial statements of BOC).
 
     24.1  Powers of Attorney.
 
       27  Financial Data Schedule. (Incorporated by reference to Exhibit 27 to report on Form
           10-K for the year ended December 31, 1998.)
 
     99.1  Form of Proxy for Annual Meeting of Shareholders of BOC
 
     99.2  Articles of Incorporation of BOC
 
     99.3  Bylaws of BOC, as amended
 
     99.4  Opinion of Keefe, Bruyette & Woods, Inc. (Included as Appendix B to the Proxy
           Statement/ Prospectus.)
 
       (B) FINANCIAL STATEMENT SCHEDULES.
 
           None.
 
       (C) REPORTS, OPINIONS AND APPRAISALS.
 
           None.
</TABLE>
 
ITEM 22. UNDERTAKINGS.
 
    (a) The undersigned 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 of 1933;
 
            (ii) To reflect in the prospectus any facts or events arising after
       the effective date of the registration statement (or the most recent
       post-effective amendment thereof) which, individually or in the
       aggregate, represent a fundamental change in the information set forth in
       the registration statement. Notwithstanding the foregoing, any increase
       or decrease in volume of securities offered (if the total dollar value of
       securities offered would not exceed that which was registered) and any
       deviation from the low or high end of the estimated maximum offering
       range may be reflected in the form of prospectus filed with the
       Commission pursuant to Rule 424(b) if, in the aggregate, the changes in
       volume and price
 
                                      II-2
<PAGE>
       represent no more than a 20% change in the maximum aggregate offering
       price set forth in the "Calculation of Registration Fee" table in the
       effective registration statement.
 
           (iii) To include any material information with respect to the plan of
       distribution not previously disclosed in the registration statement or
       any material change to such information in the registration statement.
 
        (2) That, for the purpose of determining any liability under the
    Securities Act of 1933, each such post-effective amendment shall be deemed
    to be a new registration statement relating to the securities offered
    therein, and the offering of such securities at that time shall be deemed to
    be the initial bona fide offering thereof.
 
        (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 of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 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 of 1933 may be permitted to directors, officers and controlling persons of
the registrant pursuant to its articles, bylaws or otherwise, the registrant has
been advised that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Act and 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 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 this Form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.
 
    (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.
 
                                      II-3
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-4 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Minneapolis, State of Minnesota, on April 2, 1999.
 
<TABLE>
<S>                             <C>  <C>
                                U.S. BANCORP
 
                                By:            /s/ JOHN F. GRUNDHOFER
                                     -----------------------------------------
                                                 John F. Grundhofer
                                        CHAIRMAN, PRESIDENT, CHIEF EXECUTIVE
                                                OFFICER AND DIRECTOR
</TABLE>
 
    Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.
 
<TABLE>
<CAPTION>
              SIGNATURE AND TITLE                          DATE
- ------------------------------------------------  ----------------------
 
<S>                                               <C>
 
             /s/ JOHN F. GRUNDHOFER                   April 2, 1999
     --------------------------------------
               John F. Grundhofer
      Chairman, President, Chief Executive
             Officer, and Director
         (principal executive officer)
 
              /s/ SUSAN E. LESTER                     April 2, 1999
     --------------------------------------
                Susan E. Lester
          Executive Vice President and
            Chief Financial Officer
         (principal financial officer)
 
             /s/ TERRANCE R. DOLAN                    April 2, 1999
     --------------------------------------
               Terrance R. Dolan
      Senior Vice President and Controller
         (principal accounting officer)
 
                       *                              April 2, 1999
     --------------------------------------
                Linda L. Ahlers
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                Harry L. Bettis
                    Director
</TABLE>
 
                                      II-4
<PAGE>
<TABLE>
<CAPTION>
              SIGNATURE AND TITLE                          DATE
- ------------------------------------------------  ----------------------
 
<S>                                               <C>
                       *                              April 2, 1999
     --------------------------------------
                Gerry B. Cameron
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
             Carolyn Silva Chambers
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
             Arthur D. Collins, Jr.
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                 Peter H. Coors
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                Robert L. Dryden
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                Joshua Green III
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                 Roger L. Hale
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
               Delbert W. Johnson
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                Joel W. Johnson
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
              Richard L. Knowlton
                    Director
</TABLE>
 
                                      II-5
<PAGE>
<TABLE>
<CAPTION>
              SIGNATURE AND TITLE                          DATE
- ------------------------------------------------  ----------------------
 
<S>                                               <C>
                       *                              April 2, 1999
     --------------------------------------
                 Jerry W. Levin
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
               Edward J. Phillips
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                Paul A. Redmond
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
               Richard G. Reiten
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                S. Walter Richey
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
               Richard L. Schall
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
               Walter Scott, Jr.
                    Director
 
                       *                              April 2, 1999
     --------------------------------------
                Warren R. Staley
                    Director
 
         *By:      /s/ SUSAN E. LESTER
      -----------------------------------
                Susan E. Lester
         Pro se and as Attorney-in-Fact
</TABLE>
 
                                      II-6
<PAGE>
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
                                                                                                                    PAGE
                                                                                                                    -----
<C>        <S>                                                                                                   <C>
 
      2.1  Agreement and Plan of Reorganization dated February 18, 1999, as amended and restated as of March
           26, 1999, by and between USB and BOC. (Included in Proxy Statement/ Prospectus as Appendix A.) The
           registrant agrees to furnish a supplemental copy of omitted schedules to the Commission upon
           request.
 
      4.1  Certificate of Designation and Terms of Term Participating Preferred Stock of U.S. Bancorp.
 
      4.2  Bylaws of USB, as amended. (Incorporated by reference to Exhibit 3.1 to the report on Form 10-Q for
           the quarter ended June 30, 1998.)
 
      4.3  [Pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, copies of instruments defining the rights of
           holders of long-term debt are not filed. U.S. Bancorp agrees to furnish a copy thereof to the
           Securities and Exchange Commission upon request.]
 
      4.4  Warrant Agreement, dated as of October 2, 1995, between U.S. Bancorp and First Chicago Trust Company
           of New York, as Warrant Agent and Form of Warrant. (Incorporated by reference to Exhibits 4.18 and
           4.19 to Registration Statement on Form S-3, File No. 33-61667.)
 
      4.5  Warrant Agreement, dated as of November 20, 1990, between Metropolitan Financial Corporation and
           American Stock Transfer and Trust Company, as Warrant Agent; Supplemental Warrant Agreement, dated
           as of January 24, 1995, between U.S. Bancorp and American Stock Transfer and Trust Company, as
           Warrant Agent; and Form of Warrant. (Incorporated by reference to Exhibit 4E to report on Form 10-K
           for the year ended December 31, 1996.)
 
      5.1  Opinion and consent of Dorsey & Whitney LLP as to legality of the securities being registered (to be
           filed by amendment).
 
      8.1  Opinion and consent of Dorsey & Whitney LLP as to the correctness of the tax disclosure sections in
           this Form S-4 (to be filed by amendment).
 
       12  Statement re: Computation of Ratio of Earnings to Fixed Charges. (Incorporated by reference to
           Exhibit 12 to report on Form 10-K for the year ended December 31, 1998.)
 
     23.1  Consent of Dorsey & Whitney LLP (Included in Exhibit 5.1.)
 
     23.2  Consent of Ernst & Young LLP (relating to financial statements of USB).
 
     23.3  Consent of Deloitte & Touche, LLP (relating to financial statements of BOC).
 
     24.1  Powers of Attorney.
 
       27  Financial Data Schedule. (Incorporated by reference to Exhibit 27 to report on Form 10-K for the
           year ended December 31, 1998.)
 
     99.1  Form of Proxy for Annual Meeting of Shareholders of BOC
 
     99.2  Articles of Incorporation of BOC
 
     99.3  Bylaws of BOC, as amended
 
     99.4  Opinion of Keefe, Bruyette & Woods, Inc. (Included as Appendix B to the Proxy Statement/Prospectus.)
</TABLE>

<PAGE>

                        CERTIFICATE OF DESIGNATION AND TERMS
               OF TERM PARTICIPATING PREFERRED STOCK OF U.S. BANCORP

                       PURSUANT TO SECTION 151 OF THE GENERAL
                      CORPORATION LAW OF THE STATE OF DELAWARE

          We, the undersigned, Susan E. Lester and James L. Chosy, Executive
Vice President and Chief Financial Officer and Vice President, Associate General
Counsel and Assistant Secretary, respectively, of U.S. Bancorp, a Delaware
corporation (the "Corporation"), do hereby certify, as of January 4, 1999, as
follows:

          Pursuant to authority granted by the Certificate of Incorporation of
the Corporation, and in accordance with the provisions of Section 151 of the
General Corporation Law of the State of Delaware, the Board of Directors of the
Corporation has adopted the following resolutions fixing the designation and
certain terms, powers, preferences and other rights of a new series of the
Corporation's Preferred Stock, par value $1.00 per share, and certain
qualifications, limitations and restrictions thereon:

          BE IT RESOLVED, that there is hereby established a series of Preferred
Stock, par value $1.00 per share, of the Corporation, and the designation and
certain terms, powers, preferences and other rights of the shares of such
series, and certain qualifications, limitations and restrictions thereon, are
hereby fixed as follows:

          Section 1. DESIGNATION. The distinctive serial designation of this
     series shall be "Term Participating Preferred Stock" (hereinafter called
     "THIS SERIES"). Each share of this Series shall be identical in all
     respects with the other shares of this Series except as to the dates from
     and after which dividends thereon shall be cumulative.

          The shares of this Series are to be issued by the Corporation solely
     as employment compensation to Employees (each, an "EMPLOYEE") who are
     employees of Libra Investments, Inc. (or the high-yield division of any
     successor to Libra investments, Inc. that is a direct or indirect
     subsidiary of the Corporation) and solely as a unit with rights to receive
     Common Stock ("RIGHTS") pursuant to that certain Rights Agreement, dated as
     of January 4, 1999 (the "RIGHTS AGREEMENT"), between the Corporation and
     U.S. Bank National Association, as Rights Agent. Certificates for shares of
     this Series shall also represent the Rights attached thereto, shall bear a
<PAGE>

     legend to such effect and such Rights shall be deemed to be an integral
     part of the shares of this Series.

          Section 2. NUMBER, TERM, ETC. The number of shares in this Series
     shall initially be 56,586, which number may from time to time be increased
     or decreased (but not below the number then outstanding) by the Board of
     Directors. Any shares of this Series transferred to the Corporation in
     accordance with Section 9 shall be available for reissuance as shares of
     this Series. The shares of this Series shall remain outstanding, unless
     earlier purchased by the Company, until December 31, 2003 or the Early
     Termination Date (as defined in the Rights Agreement) (the "TERM DATE").
     Shares of this Series may be issued in fractional shares, which fractional
     shares shall entitle the holder, in proportion to such holder's fractional
     share, to all rights of a holder of a whole share of this Series.

          Section 3. DIVIDENDS. The holders of full or fractional shares of this
     Series shall be entitled to receive, when and as declared by the Board of
     Directors, but only out of funds legally available therefor, dividends, on
     each date occurring prior to the Term Date that dividends or other
     distributions (other than dividends or distributions payable in Common
     Stock of the Corporation) are payable on or in respect of Common Stock
     comprising part of the Reference Package (as defined below), in an amount
     per whole share of this Series equal to the aggregate amount of dividends
     or other distributions (other than dividends or distributions payable in
     Common Stock of the Corporation) that would be payable on such date to a
     holder of the Reference Package. Each such dividend shall be paid to the
     holders of record of shares of this Series on the date, not exceeding sixty
     days preceding such dividend or distribution payment date, fixed for the
     purpose by the Board of Directors in advance of payment of each particular
     dividend or distribution. Dividends on each full and each fractional share
     of this Series shall be cumulative from the date such full or fractional
     share is originally issued; PROVIDED that any such full or fractional share
     originally issued after a dividend record date and on or prior to the
     dividend payment date to which such record date relates shall not be
     entitled to receive the dividend payable on such dividend payment date.

          The term "REFERENCE PACKAGE" shall initially mean ten shares of
     Common Stock of the Corporation. If the Corporation shall, at any time 
     after the close of business on the date of initial issuance of shares
     of this Series, (a) declare or pay a dividend on any Common Stock payable
     in Common Stock, (b) subdivide (by any split, recapitalization or 
     otherwise), any Common Stock or (c) combine any Common Stock into a 
     smaller number of shares, then and in each such case the Reference Package
     after such event shall be the Common Stock that a holder of the Reference
     Package immediately prior to such event would hold thereafter as a result
     thereof.

<PAGE>

          Holders of shares of this Series shall not be entitled to any
     dividends, whether payable in cash, property or stock, in excess of full
     cumulative dividends, as herein provided for this Series.

          So long as any shares of this Series are outstanding, no dividend     
     (other than a dividend in Common Stock or in any other stock ranking junior
     to this Series as to dividends and upon liquidation, dissolution or winding
     up) shall be declared or paid or set aside for payment or other
     distribution declared or made upon the Common Stock or upon any other stock
     ranking junior to this Series as to dividends or upon liquidation,
     dissolution or winding up, nor shall any Common Stock nor any other stock
     of the Corporation ranking junior to or on a parity with this Series as to
     dividends or upon liquidation, dissolution or winding up be redeemed,
     purchased or otherwise acquired for any consideration (or any moneys be
     paid to or made available for a sinking fund for the redemption of any
     shares of any such stock) by the Corporation (except by conversion into or
     exchange for stock of the Corporation ranking junior to this Series as to
     dividends and upon liquidation, dissolution or winding up), unless, in each
     case, the full cumulative dividends (including the dividend to be due upon
     payment of such dividend, distribution, redemption, purchase or other
     acquisition) on all outstanding shares of this Series shall have been, or
     shall contemporaneously be, paid.

          Section 4. MERGER, ETC. In the event of any merger, consolidation,
     reclassification, binding share exchange or other transaction completed
     prior to the Term Date in which the shares of Common Stock are exchanged
     for or changed into other stock or securities, cash and/or any other
     property, then in any such case the full and fractional shares of this
     Series shall at the same time be similarly exchanged or changed in an
     amount per whole share of this Series equal to the aggregate amount of
     stock, securities, cash and/or any other property (payable in kind), as the
     case may be, that a holder of the Reference Package would be entitled to
     receive as a result of such transaction.

          Section 5. LIQUIDATION PREFERENCE. In the event of any liquidation,
     dissolution or winding up of the affairs of the Corporation, whether
     voluntary or involuntary, completed prior to the Term Date the holders of
     full and fractional shares of this Series shall be entitled, before any
     distribution or payment is made on any date to the holders of the Common
     Stock or any other stock of the Corporation ranking junior to this Series
     upon liquidation, dissolution or winding up, to be paid in full an amount
     per whole share of this Series equal to the aggregate amount distributed or
     to be distributed prior to such date in connection with such liquidation,
     dissolution or winding up to a holder of the Reference Package (such
     greater amount being hereinafter referred to as the "LIQUIDATION
     PREFERENCE"), together with accrued dividends to such distribution or
     payment date, whether or not earned or declared. If
<PAGE>

     such payment shall have been made in full to all holders of shares of this
     Series, or on or following the occurrence of the Term Date, the holders of
     shares of this Series as such shall have no right or claim to any of the
     remaining assets of the Corporation.

          In the event the assets of the Corporation available for distribution
     to the holders of shares of this Series upon any liquidation, dissolution
     or winding up of the Corporation, whether voluntary or involuntary, shall
     be insufficient to pay in full all amounts to which such holders are
     entitled pursuant to the first paragraph of this Section 5, no such
     distribution shall be made on account of any shares of any other class or
     series of Preferred Stock ranking on a parity with the shares of this
     Series upon such liquidation, dissolution or winding up unless
     proportionate distributive amounts shall be paid on account of the shares
     of this Series, ratably in proportion to the full distributable amounts for
     which holders of all such parity shares are respectively entitled upon such
     liquidation, dissolution or winding up. 

          Upon the liquidation, dissolution or winding up of the Corporation,
     the holders of shares of this Series then outstanding shall be entitled to
     be paid out of assets of the Corporation available for distribution to its
     stockholders all amounts to which such holders are entitled pursuant to
     the first paragraph of this Section 5 before any payment shall be made to
     the holders of Common Stock or any other stock of the Corporation ranking
     junior upon liquidation to this Series.

          For the purposes of this Section 5, the consolidation or merger of, or
     binding share exchange by, the Corporation with any other corporation shall
     not be deemed to constitute a liquidation, dissolution or winding up of the
     Corporation.

          Section 6. REDEMPTION. The shares of this Series shall not be
     redeemable.

          Section 7. TERM. As contemplated above, the Shares of this Series
     shall no longer be outstanding on and after the Term Date. From the Term
     Date, each share of this Series shall represent solely the right to 
     receive the number of shares to which the holder of the attached Right, 
     would be entitled, assuming that such Right is validly exercised or deemed
     exercised, and the holders of shares of this Series shall no longer have 
     any rights or claims against the Corporation (including, without 
     limitation, no right to receive any amount in respect of the liquidation 
     preference) other than as provided in the attached Rights. Certificates 
     for shares of this Series shall also represent the Rights attached 
     thereto, shall bear a legend to such effect and such Rights shall be deemed
     to be an integral part of the shares of this Series.
<PAGE>

          Section 8. VOTING. The shares of this Series shall not afford the
     holders thereof any right to vote or consent except as required by law.

          Section 9. TRANSFER. A share of this Series shall not be transferred,
     sold, assigned, alienated or otherwise disposed of by any person to whom
     such share is issued by the Corporation except: (1) by an Employee to such
     Employee's spouse or children or trusts for their benefit or the benefit of
     such Employee; (2) by the laws of descent; or (3) to the Corporation, in
     each such case without the receipt of value therefor.

     IN WITNESS WHEREOF, the undersigned have signed and attested this
certificate as of the date first above written.



                                                       [ILLEGIBLE]
                                                  --------------------------

Attest:


    [ILLEGIBLE]
- -----------------------

<PAGE>

                           CONSENT OF INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Experts" in the 
Registration Statement (Form S-4) and related Prospectus of U.S. Bancorp for 
the registration of 9,000,000 shares of its common stock and to the 
incorporation by reference therein of our report dated January 20, 1999, with 
respect to the consolidated financial statements of U.S. Bancorp included in 
its Annual Report (Form 10-K) for the year ended December 31, 1998, filed 
with the Securities and Exchange Commission.

Ernst & Young LLP

Minneapolis, Minnesota
March 30, 1999


<PAGE>

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 29, 1999, appearing in the
Annual Report on Form 10-K of Bank of Commerce for the year ended December 31,
1998 and to the reference to us under the headings "Experts" and "Selected
Financial Data" in the Joint Proxy Statement/Prospectus, which is part of this
Registration Statement.



DELOITTE & TOUCHE LLP



San Diego, California
March 31, 1999

<PAGE>

PAGE 1 OF 3 OF POWER OF ATTORNEY TO U.S. BANCORP REGISTRATION STATEMENT ON 
FORM S-4.


                               POWER OF ATTORNEY

     KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature 
appears below hereby constitutes and appoints Lee R. Mitau, Susan E. Lester 
and Terrance R. Dolan and each of them, his or her true and lawful 
attorneys-in-fact and agents, each acting alone, with full power of 
substitution and resubstitution, for him or her and in his or her name, place 
and stead, in any and all capacities, to sign one or more Registration 
Statements on Form S-4 of U.S. Bancorp, and any and all amendments thereto, 
including post-effective amendments, and to file the same, with all exhbits 
thereto and other documents in connection therewith, with the Securities and 
Exchange Commission, granting unto said attorneys-in-fact and agents, each 
acting alone, full power and authority to do and perform 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, each acting alone, or 
the substitutes for such attorneys-in-fact and agents, may lawfully do or 
cause to be done by virtue hereof.


              SIGNATURE                 TITLE                   DATE


                               Chairman, President,                       , 1999
- -----------------------------  Chief Executive Officer     ---------------
John F. Grundhofer             and Director (principal 
                               executive officer)


                               Executive Vice President                   , 1999
- -----------------------------  and Chief Financial         ---------------
Susan E. Lester                Officer (principal 
                               financial officer)


                               Senior Vice President and                  , 1999
- -----------------------------  Controller (principal       ---------------
Terrance R. Dolan              accounting officer)


/s/ Linda L. Ahlers            Director                    March 23       , 1999
- -----------------------------                              ---------------
Linda L. Ahlers


/s/ Harry L. Bettis            Director                    March 24       , 1999
- -----------------------------                              ---------------
Harry L. Bettis


/s/ Gerry B. Cameron           Director                    March 23       , 1999
- -----------------------------                              ---------------
Gerry B. Cameron

<PAGE>

PAGE 2 OF 3 OF POWER OF ATTORNEY TO U.S. BANCORP REGISTRATION STATEMENT ON 
FORM S-4.


/s/ Carolyn Silva Chambers     Director                                   , 1999
- -----------------------------                              ---------------
Carolyn Silva Chambers


/s/ Arthur D. Collins, Jr.     Director                    March 23       , 1999
- -----------------------------                              ---------------
Arthur D. Collins, Jr.


/s/ Peter H. Coors             Director                                   , 1999
- -----------------------------                              ---------------
Peter H. Coors


/s/ Robert L. Dryden           Director                    March 23       , 1999
- -----------------------------                              ---------------
Robert L. Dryden


/s/ Joshua Green III           Director                    March 23       , 1999
- -----------------------------                              ---------------
Joshua Green III


/s/ Roger L. Hale              Director                    March 23       , 1999
- -----------------------------                              ---------------
Roger L. Hale


/s/ Delbert W. Johnson         Director                                   , 1999
- -----------------------------                              ---------------
Delbert W. Johnson


/s/ Joel W. Johnson            Director                    March 29       , 1999
- -----------------------------                              ---------------
Joel W. Johnson


/s/ Richard L. Knowlton        Director                    March 23       , 1999
- -----------------------------                              ---------------
Richard L. Knowlton


/s/ Jerry W. Levin             Director                                   , 1999
- -----------------------------                              ---------------
Jerry W. Levin


/s/ Edward J. Phillips         Director                    March 26       , 1999
- -----------------------------                              ---------------
Edward J. Phillips


/s/ Paul A. Redmond            Director                                   , 1999
- -----------------------------                              ---------------
Paul A. Redmond

<PAGE>

PAGE 3 OF 3 OF POWER OF ATTORNEY TO U.S. BANCORP REGISTRATION STATEMENT ON 
FORM S-4.


/s/ Richard G. Reiten          Director                    March 23       , 1999
- -----------------------------                              ---------------
Richard G. Reiten


/s/ S. Walter Richey           Director                                   , 1999
- -----------------------------                              ---------------
S. Walter Richey


/s/ Richard L. Schall          Director                    March 23       , 1999
- -----------------------------                              ---------------
Richard L. Schall


/s/ Walter Scott, Jr.          Director                                   , 1999
- -----------------------------                              ---------------
Walter Scott, Jr.


/s/ Warren R. Staley           Director                    March 29       , 1999
- -----------------------------                              ---------------
Warren R. Staley


<PAGE>

                                   BANK OF COMMERCE
               PROXY FOR ANNUAL MEETING OF SHAREHOLDERS, JUNE 15, 1999
                         SOLICITED BY THE BOARD OF DIRECTORS


Peter Q. Davis, Nicole A. Clay, and Gary D. Cristofani, or any of them, with
full power of substitution, are hereby appointed by the signatory of this proxy
to vote all shares of Common Stock held by the signatory on April 30, 1999, at
the June 15, 1999 Annual Meeting of Shareholders of the Bank of Commerce and any
adjournment thereof, on each of the items on the reverse side and in accordance
with the directions given there and, in their discretion, to cumulate votes for
directors, and to vote on all other matters that may properly come before the
Annual Meeting and any adjournment thereof.


                     (Continued and To Be Signed on Reverse Side)

<PAGE>

                THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR AL ITEMS

Please mark your vote as indicated in this example               /X/

1) APPROVAL OF AGREEMENT AND PLAN OF REORGANIZATION OF BANK OF COMMERCE WITH AND
   INTO U.S. BANK, NATIONAL ASSOCIATION


       FOR            AGAINST       ABSTAIN
       / /              / /           / /

2) ELECTION OF ALL NOMINEES AS DIRECTORS OF THE BANK

   Michael M. Bamber, David H. Bartram, Nicole A. Clay, Albert Colucci,
   Peter Q. Davis, Lucy L. Killea, Richard N. Krupp, Susan Lew, and John A. Rose

   For all nominees listed above (except as marked to the contrary)     / /

   Withhold authority to vote for all nominees listed below             / /

   Withhold authority to vote for the following nominees:

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

3) APPROVAL TO AMEND THE BANK OF COMMERCE 1998 STOCK PLAN TO PERMIT STOCK AWARDS
   TO BE ASSUMED BY ANOTHER PARTY IN THE EVENT OF A MERGER.

       FOR            AGAINST       ABSTAIN
       / /              / /           / /

4) APPROVAL TO AMEND THE BANK OF COMMERCE 1998 STOCK PLAN INCREASING THE NUMBER
   OF SHARES AVAILABLE FOR STOCK AWARDS.

       FOR            AGAINST       ABSTAIN
       / /              / /           / /

5) APPROVAL TO TRANSACT OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE
   ANNUAL MEETING.

       FOR            AGAINST       ABSTAIN
       / /              / /           / /

Receipt of a copy of the Notice and Proxy Statement dated April 30, 1999 is
hereby acknowledged.

Please date and sign, exactly as name appears on this proxy.  Executors,
administrators, guardians, and other signing in a fiduciary capacity should
indicate such capacity when signing.  If shares are held jointly, each holder
should sign.

Date:
       ----------------------------------------------

Signature of Shareholder:
                           ---------------------------------------

Signature of Shareholder:
                           ---------------------------------------

UNLESS OTHERWISE SPECIFIED, THIS PROXY WILL BE VOTED FOR ALL ITEMS


<PAGE>

                              ARTICLES OF INCORPORATION

                                          OF

                                   BANK OF COMMERCE


                                          I

The name of this corporation is:

                                   BANK OF COMMERCE

                                          II

The purposes for which this corporation is formed are:

(a)  To engage primarily in the business of banking;

(b)  To engage generally in the business of a commercial bank as defined and
     provided for in the Financial Code of the State of California;

(c)  To engage generally in the business of renting safe deposit boxes and
     receiving personal property for safekeeping and storage on the banking
     premises as provided in the Financial Code of the State of California.

(d)  Subject to the provisions of the Financial Code of the State of California
     to do any business anywhere in the world;

(e)  To exercise any and all rights and powers now and hereafter granted to a
     bank by law.

          The above purpose clauses shall not be limited by reference to or
inference from one another, but each such purpose clause shall be construed as a
separate statement conferring independent purposes and powers upon the
corporation.

<PAGE>


                                         III

          The principal office for the transaction of business of this
corporation is to be located in the County of San Diego, State of California.

                                          IV

          The total number of shares which this corporation shall have authority
to issue is one million (1,000,000) shares, all of one class.  The aggregate par
value of all of said shares is Five Million Dollars ($5,000,000.00), and the par
value of each such share is Five Dollars ($5.00).

          The common shares of the corporation shall be subject to assessment by
the Board of Directors upon order of the Superintendent of Banks of the State of
California for the purpose of restoring an impairment or reduction of capital in
the manner and to the extent provided for in the Financial Code and the
Corporations Code of the State of California.

                                         V

          The number of directors of this corporation shall be not fewer than
nine (9) nor more than twelve (12), the exact number within said range to be
fixed by the By-Laws or an amendment thereof duly adopted by the shareholders or
by the Board of Directors.  The indefinite number may be changed, or a definite
number of directors fixed without provision for an indefinite number, by a
By-Law duly adopted by the shareholders.

                                          VI

          The names and addresses of the persons who are appointed to act as the
first directors are:


                                        - 2 -
<PAGE>


          Name                                   Address
          ----                                   -------

 Michael McCarty Bamber                  2124 No. Iris Lane
                                         Escondido, California

 Philip H. Benton                        5930 Bellevue Avenue
                                         La Jolla, California

 George Lawrence Byrum                   9603 Candy Lane
                                         La Mesa, California  92041

 Kenneth Conover Forror                  1207 Merritt Drive
                                         El Cajon, California  92020

 William Gibbs, Jr.                      1122 La Jolla Rancho Road
                                         La Jolla, California  92037

 Donald L. Hanson                        615 East Main
                                         Washington, Iowa  52353

 James O. Hewitt                         6011 Germaine Lane
                                         La Jolla, California  92037

 Richard Noel Krupp                      Krupp Ranch
                                         2800 Mountain View Drive
                                         Escondido, California  92027

 Clinton McKinnon                        26 Shore Drive
                                         San Diego, California  92109

          IN WITNESS WHEREOF, the undersigned, being the persons hereinabove
named as the first directors of this corporation, have executed these Articles
of Incorporation.


 /s/ Michael McCarty Bamber              /s/ Philip H. Benton
 -------------------------------         --------------------------------
 Michael McCarty Bamber                  Philip H. Benton

 /s/ George Lawrence Byrum               /s/ Kenneth Conover Forror
 -------------------------------         --------------------------------
 George Lawrence Byrum                   Kenneth Conover Forror

 /s/ William Gibbs, Jr.                  /s/ Donald L. Hanson
 -------------------------------         --------------------------------
 William Gibbs, Jr.                      Donald L. Hanson


                                        - 3 -
<PAGE>


 /s/ James O. Hewitt                     /s/ Richard Noel Krupp
 -------------------------------         --------------------------------
 James O. Hewitt                         Richard Noel Krupp

 /s/ Clinton McKinnon
 -------------------------------
 Clinton McKinnon


State of California )
                    )    ss
County of San Diego )

          On this 28th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared Michael McCarty Bamber known to me
to be the person whose name is subscribed to the foregoing Articles of
Incorporation, and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: October 28, 1974


Signature:     /s/ Theresa Naylor
               ------------------------------
               Notary Public in and for Said
                     County and State



State of California )
                    )    ss
County of San Diego )

          On this 7th day of November, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared Philip H. Benton known to me to be
the person whose name is subscribed to the foregoing Articles of Incorporation,
and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: November 7, 1974


Signature:     /s/ Katharina M. Varney
               ------------------------------
               Notary Public in and for Said
                     County and State


                                        - 4 -
<PAGE>


State of California )
                    )    ss
County of San Diego )

          On this 28th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared George Lawrence Byrum known to me to
be the person whose name is subscribed to the foregoing Articles of
Incorporation, and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: October 28, 1974


Signature:     /s/ Theresa Naylor
               ------------------------------
               Notary Public in and for Said
                     County and State



State of California )
                    )    ss
County of San Diego )

          On this 28th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared Kenneth Conover Forror, known to me
to be the person whose name is subscribed to the foregoing Articles of
Incorporation, and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: October 28, 1974


Signature:     /s/ Theresa Naylor
               ------------------------------
               Notary Public in and for Said
                     County and State


                                        - 5 -
<PAGE>


State of California )
                    )    ss
County of San Diego )

          On this 4th day of November, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared William Gibbs, Jr., known to me to
be the person whose name is subscribed to the foregoing Articles of
Incorporation, and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated:  November 4, 1974


Signature:     /s/ Katharina M. Varney
               ------------------------------
               Notary Public in and for Said
                     County and State



State of Iowa            )
                         )    ss
County of Washington     )

          On this 14th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared Donald L. Hanson known to me to be
the identical person named in and who executed the foregoing instrument, and
acknowledged that he executed the same as his voluntary act and deed.

WITNESS my hand and official seal.

Dated: October 14, 1974


Signature:     /s/ Florence S. Hanson
               ------------------------------
               Notary Public in and for Said
                     County and State


                                        - 6 -
<PAGE>


State of California )
                    )    ss
County of San Diego )

          On this 28th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared James O. Hewitt, known to me to be
the person whose name is subscribed to the foregoing Articles of Incorporation,
and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: October 28, 1974


Signature:     /s/ Theresa Naylor
               ------------------------------
               Notary Public in and for Said
                     County and State



State of California )
                    )    ss
County of San Diego )

          On this 28th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared Richard Noel Krupp, known to me to
be the person whose name is subscribed to the foregoing Articles of
Incorporation, and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: October 28, 1974


Signature:     /s/ Theresa Naylor
               ------------------------------
               Notary Public in and for Said
                     County and State


                                        - 7 -
<PAGE>


State of California )
                    )    ss
County of San Diego )

          On this 28th day of October, 1974, before me, the undersigned, a
Notary Public in and for said County and State, residing therein, duly
commissioned and sworn, personally appeared Clinton McKinnon, known to me to be
the person whose name is subscribed to the foregoing Articles of Incorporation,
and acknowledged to me that he executed the same.

          WITNESS my hand and official seal.

Dated: October 28, 1974


Signature:     /s/ Theresa Naylor
               ------------------------------
               Notary Public in and for Said
                     County and State


                                        - 8 -
<PAGE>


                                 STATE OF CALIFORNIA

                               STATE BANKING DEPARTMENT



                           CERTIFICATE OF APPROVAL OF NAME


          Pursuant to Section 309 of the Corporations Code, I, DONALD E,
PEARSON, Superintendent of Banks of the State of California, do hereby approve
the name Bank of Commerce, as set forth in the attached Articles of
Incorporation of Bank of Commerce.

          Given under my hand and official seal this 17th day of December, 1974,
in the City and County of Los Angeles, State of California.

                                                  DONALD E. PEARSON
                                                  Superintendent of Banks


                                             By:  /s/ Jack Fried
                                                  -----------------
                                                  JACK FRIED
                                                  Legal Assistant


<PAGE>


                                       RESTATED

                              ARTICLES OF INCORPORATION

PETER Q. DAVIS AND ROBERT L. ROY certify that
     1.   They are the president and the secretary respectively, of Bank of 
          Commerce, a California corporation.
     2.   The articles of incorporation of the corporation are amended and 
          restated to read as follows:

                              ARTICLES OF INCORPORATION

                                          OF

                                   BANK OF COMMERCE

                                          I

The name of this corporation is:

                                   BANK OF COMMERCE

                                          II

The purpose of the Corporation is to engage in commercial banking business and
other lawful activities which are not, by applicable Laws or regulations,
prohibited to a commercial bank.

                                         III

The Corporation shall be authorized to issue one and only one class of shares
which shall be known as common stock and the maximum number of shares which the
Corporation is authorized to issue shall be One Million (1,000,000) upon
amendment of this Article, each of the issued and outstanding shares of common
stock shall, without the necessity of any further act by any person or entity,
be deemed split into two (2) shares of the Corporation's common stock.

The common stock of the Corporation is subject to assessment by the Corporation
upon order of the Superintendent of Banking of the State of California for the
purpose of correcting an impairment of contributed capital in the manner and to
the extent provided by Division 1 of the California Financial Code.

                                          IV

The Corporation elects to be governed by all of the provisions of Division 1 of
Title 1 of the California Corporations Code (as amended by Act of the California
Legislature, 1975 - 1976 regular session, effective January 1, 1977, as defined
in Section 2300 of the California General Corporation Law) not otherwise
applicable to this Corporation under Chapter 23 of said Division 1; subject,


<PAGE>

however, to the provisions of Section 101 of the California Financial Code.

     3.   The foregoing amendment and restatement of articles of incorporation
          has been duly approved by the Board of Directors.

     4.   The foregoing amendment and restatement of Articles of Incorporation
          are those which may be adopted by the Board alone for the reason that
          the corporation has only one class of shares outstanding, the
          amendment effects only a stock split; and, further makes no change in
          the Articles of Incorporation other than conforming the statements of
          purpose and powers to subdivision (a) of Section 600 of the Financial
          Code, deletes any reference to par value, location of principal office
          and statements of authorized number of directors and makes the
          necessary election to be governed by all of the provisions of the new
          law, not otherwise applicable to it under Chapter 23 of the
          Corporations Code.



                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        PETER Q. DAVIS, President


                                        /s/ Robert L. Roy
                                        -----------------------------
                                        ROBERT L. ROY, Secretary


The undersigned declare under penalty of perjury that the matters set forth in
the foregoing certificate are true of their own knowledge.
Executed at San Diego, California
on May 11, 1979.



                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        PETER Q. DAVIS, President


                                        /s/ Robert L. Roy
                                        -----------------------------
                                        ROBERT L. ROY, Secretary

<PAGE>


                               CERTIFICATE OF AMENDMENT
                                          OF
                              ARTICLES OF INCORPORATION


     Peter Q. Davis and Timothy G. Malott certify that:

     1.   That they are the President and Secretary, respectively, of Bank of
Commerce, a California banking corporation.

     2.   Article III of the Articles of Incorporation of this banking
corporation is amended to read as follows:

                                         III.

          A.   The Corporation shall be authorized to issue two classes of
     shares which shall be designated "Common Stock" and "Preferred Stock",
     respectively.  The number of shares of Common Stock authorized to be
     issued shall be five million (5,000,000) and the number of shares of
     Preferred Stock authorized to be issued shall be one million
     (1,000,000).

          B.   The Preferred Stock may be divided into such number of
     series as the Board of Directors may determine.  The Board of
     Directors is authorized to determine and alter the rights,
     preferences, privileges and restrictions granted to or imposed upon
     any wholly unissued series of Preferred Stock, and to fix the number
     of shares of any series of Preferred Stock and the designation of any
     such series of Preferred Stock.  The Board of Directors, within limits
     and restrictions stated in any resolution or resolutions of the Board
     of Directors originally fixing the number of shares constituting any
     series, may increase or decrease (but not below the number of shares
     of such series then outstanding) the number of shares of any series
     subsequent to the issue of shares of that series.

          C.   The Common Stock of the Corporation is subject to assessment
     by the Corporation upon order of the Superintendent of Banking of the
     State of California for the purpose of correcting an impairment of
     contributed capital in the manner and to the extent provided by
     Division 1 of the California Financial Code.

<PAGE>

     3.   The foregoing Amendment of Articles of Incorporation has been duly
approved by the Board of Directors.

     4.   The foregoing Amendment of Articles of Incorporation has been duly
approved by the required vote of shareholders in accordance with Section 902 of
the Corporations Code.  The total number of outstanding shares of the
corporation is 616,517.  The number of shares voting in favor of the Amendment
equalled or exceeded the vote required.  The percentage vote required was more
than 50%.

     We further declare under penalty of perjury under the laws of the State of
California that the matters set forth in this Certificate are true and correct
of our own knowledge.

     Dated June 4, 1984.


                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        Peter Q. Davis,
                                        President


                                        /s/ Timothy G. Malott
                                        -----------------------------
                                        Timothy G. Malott,
                                        Secretary


<PAGE>


                             CERTIFICATE OF DETERMINATION
                            OF SERIES A PREFERRED STOCK OF
                                   BANK OF COMMERCE


     The undersigned, PETER Q. DAVIS and TIMOTHY MALOTT, hereby certify that:

     1.   They are the duly elected and acting President and Secretary,
respectively, of Bank of Commerce, a corporation organized and existing under
the laws of the State of California (the "Corporation").

     2.   Pursuant to authority given by the Corporation's Articles of
Incorporation, the Board of Directors of the Corporation has duly adopted the
following recitals and resolutions:

     WHEREAS, the Articles of Incorporation of the Corporation provide for a
class of shares known as Preferred Stock, issuable from time to time in one or
more series; and

     WHEREAS, the Board of Directors of the Corporation is authorized, within
the limitations and restrictions stated in the Articles of Incorporation, to
determine or alter the rights, preferences, privileges, and restrictions granted
to or imposed upon any wholly unissued series of Preferred Stock, to fix the
number of shares constituting any such series, and to determine the designation
thereof; and

     WHEREAS, the Corporation has not issued any shares of such Preferred Stock
and the Board of Directors of the Corporation desires, pursuant to its authority
as aforesaid, to fix the terms of the initial series of said Preferred Stock and
the number of shares constituting such series and the designation of said
series.

     NOW, THEREFORE, BE IT RESOLVED, that the Board of Directors hereby fixes
and determines the designation of, the number of shares constituting, and the
rights, preferences, privileges and restrictions relating to, said initial
series of said Preferred Stock as follows:

     1.   DESIGNATION AND NUMBER OF SHARES.  The initial series of Preferred
Stock shall be designated 10% Cumulative Convertible Series A Preferred Stock
(herein called "Series A Preferred Stock") and the number of shares of Series A
Preferred Stock is hereby established at 430,000.

     2.   DIVIDENDS.  The holders of Series A Preferred Stock shall be entitled
to receive dividends in any fiscal year, when and as declared by the Board of
Directors out of any funds legally available therefor, at the rate of $.70 per
share per


<PAGE>


annum and no more, payable semi-annually on the first day of July and January in
each year.  Such dividends shall accrue on each such share from the date of its
original issuance and shall accrue from day to day, whether or not earned or
declared.  Such dividends shall be cumulative so that if such dividends in
respect of any previous semi-annually dividend period at said rate of $.70 per
share per annum shall not have been paid or declared and set apart for all
Series A Preferred Stock at the time outstanding, the deficiencies shall be
fully paid or declared and set apart for payment, without interest, before any
distribution, by dividend or otherwise, shall be paid on, declared, or set apart
for the shares of Common Stock.

     3.   LIQUIDATION PREFERENCE.  On any voluntary or involuntary liquidation,
dissolution or winding up the Bank, the holders of shares of Series A Preferred
Stock shall receive the sum of $7 per share, plus all accrued and unpaid
dividends, and no more before any amount shall be paid to the holders of shares
of Common Stock.  Should the assets of the Bank be insufficient to permit full
payment to the holders of shares of Series A Preferred Stock as provided herein,
then such assets of the Bank shall be distributed ratably among the holders of
outstanding shares of Series A Preferred Stock.  Subject to such preferential
rights, the holders of shares of Common Stock shall receive, ratably, all
remaining assets of the Bank.  A merger of the Bank with or into any other bank,
or sale of all, or substantially all of the assets of the Bank, shall not be
deemed to be a liquidation, dissolution or winding up of the Bank within the
meaning of this paragraph.

     4.   REDEMPTION.  Subject to the provisions of the California Financial
Code, the Bank, at the option of the Board of Directors, may, upon not less than
30 days' nor more than 60 days' prior written notice, redeem the whole or any
part of the outstanding shares of Series A Preferred Stock.  Upon redemption the
Bank shall pay for each share redeemed cash in the amount of $7 per share plus
all dividends (without interest) accrued and unpaid to the redemption date (the
"redemption price") (except for dividends which have been declared and set aside
for payment).  The Board of Directors must give to each holder of Series A
Preferred Stock of record at his last known address, as shown on the records of
the Bank, at least 30 days' prior notice in writing, by first-class mail,
postage prepaid, stating the date and plan of redemption, the then current
conversion price and the intended date of conversion (the "redemption notice").
Should only a part of the outstanding shares of Series A Preferred Stock be
redeemed, such redemption shall be effected by lot, as prescribed by the Board
of Directors, or pro rata; provided, however, that no shares shall be redeemed
unless all accrued dividends on all outstanding shares of Series A Preferred
Stock shall have been paid for all past dividend periods and full dividends for
the current period on all outstanding shares of Series A Preferred Stock, except
those to be redeemed, shall have been paid or declared and set aside for
payment.  On or after the


                                        - 2 -
<PAGE>


date fixed for redemption, each holder of shares of Series A Preferred Stock
called for redemption shall surrender his certificate for such shares to the
Bank at the place designated in the redemption notice and shall thereupon be
entitled to receive payment of the redemption price.  Should less than all of
the shares represented by any surrendered certificate be redeemed, a new
certificate for the unredeemed shares shall be issued.  If the redemption notice
is duly given and if sufficient funds are available therefor on the date fixed
for redemption, then, whether or not the certificate evidencing the shares to be
redeemed are surrendered, all rights with respect to such shares shall terminate
on the date fixed for redemption except the right of the holders to receive the
redemption price, without interest, on surrender of their certificate therefor.

          If, on or prior to any date fixed for redemption of redeemable shares,
as herein provided, the Bank deposits with any bank or trust company in
California, as a trust fund, a sum sufficient to redeem, on the date fixed for
redemption, the shares called for redemption, with irrevocable instructions and
authority to the bank or trust company to publish the redemption thereof, or to
complete such publication theretofore commenced, and to pay, on and after the
date fixed for redemption or prior thereto, the redemption price of the shares
to the respective holders on surrender of their share certificates, and from and
after the date of the deposit, even though the date may be prior to the date
fixed for redemption, the shares so called shall be redeemed and dividends on
those shares shall cease to accrue after the date fixed for redemption.  The
deposit shall constitute full payment of the shares to their holders and from
and after the date of the deposit the shares shall no longer be outstanding and
the holders thereof shall cease to be shareholders with respect to such shares
and shall have no rights with respect thereto, except the right to receive from
the bank or trust company payment of the redemption price of the shares, without
interest, on surrender of their certificates therefor, or the right to convert
said shares to Common Stock.  Any money so deposited on account of the
redemption price as redeemable shares converted after the making of the deposit
shall be repaid to the Bank forthwith on the conversion of such shares of
Series A Preferred Stock.

     Shares redeemed by the Bank shall be restored to the status of authorized
but unissued shares of the Bank.

     5.   CONVERSION RIGHTS AND PRICE.

          a.   GENERAL.  The holder of any shares of Series A Preferred Stock
shall at any time (unless the shares of Series A Preferred Stock have been
called for redemption, then at any time from and after the giving of the
redemption notice and prior to the close of business on the day prior to the
date of redemption stated in the redemption notice), at his option on delivery
to the Bank of his written election to convert such shares to shares


                                        - 3 -
<PAGE>


of Common Stock, and therein stating the name or names in which he wishes the
certificate or certificates for the shares of Common Stock to be issued, and on
surrender at the office of the Bank or the office of the transfer agent for such
shares of the certificate or certificates of such Series A Preferred Stock, duly
endorsed to the Bank, be entitled to receive fully paid shares of Common Stock
of the Bank calculated to the nearest 1/100th share, fractions of less than
1/100th a share being disregarded at the conversion price then in effect.  For
the purpose of such conversion, each share of Series A Preferred Stock shall be
taken at $7 per share, and the price at which shares of Common Stock shall be
deliverable upon conversion (the "Conversion Price") shall be initially $7 per
share of Common Stock.  The Conversion Price shall be subject to adjustment from
time to time as herein provided.  Any conversion effected pursuant hereto shall
be deemed to have been made as of the date the shares of Series A Preferred
Stock are surrendered for conversion, and the person or persons entitled to
receive the shares of Common Stock issuable upon such conversion shall be deemed
the record holder or holders of such shares of Common Stock from and after said
date.

          b.   ADJUSTMENTS TO CONVERSION PRICE.  The number of shares of Common
Stock into which shares of Series A Preferred Stock may be converted shall be
subject to adjustment from time to time as follows:

               (i)  If the Bank takes a record of the holders of its Common
Stock for the purpose of entitling them to receive a dividend or other
distribution payable in shares of Common Stock, or in securities convertible
into or exchangeable for shares of Common Stock, the maximum number of shares of
Common Stock issuable in payment of such dividend or distribution, or on
conversion of or in exchange for the securities convertible into or exchangeable
for shares of Common Stock, shall be deemed to have been issued and to be
outstanding as of such record date, and the number of shares of Common Stock
into which shares of Series A Preferred Stock may be converted shall be
increased in proportion to the increase of the number of outstanding shares of
Common Stock resulting therefrom.

               (ii) On any recapitalization of the Bank through the subdivision
or combination of its outstanding shares of Common Stock into a greater or
smaller number of shares, the number of shares of Common Stock into which shares
of Series A Preferred Stock may be converted shall be increased or reduced in
the same proportion.

               (iii) If the Bank takes a record of the holders of its shares of
Common Stock of the purpose of entitling them to subscribe for additional shares
of Common Stock on payment of an amount less than the then current market price
per share of such Common Stock, at the time such record is taken, the number of
shares of Common Stock deliverable upon the conversion of each


                                        - 4 -
<PAGE>


share of Series A Preferred Stock shall be increased in the ratio which sum of
the number of shares of Common Stock outstanding at the time such record is
taken, and the number of shares of Common Stock offered bears to the sum of the
number of shares of Common Stock outstanding at the time such record is taken
and the number of shares of Common Stock which the aggregate subscription price
would purchase at the market value per share of the shares of Common Stock at
the time such record is taken.  If the Bank takes a record of the holders of its
shares of Common Stock for the purpose of entitling them to subscribe for shares
or other securities convertible into, exchangeable for, or carrying rights of
purchase of, shares of Common Stock, a record shall be deemed to have been taken
for the purpose of entitling the holders of the shares of Common Stock to
subscribe for the total number of shares of Common Stock deliverable on the
exercise of such rights of conversion, exchange or purchase, on payment of an
aggregate price equal to the sum of the total consideration payable to the Bank
for such shares or other securities so convertible or exchangeable, and in case
of such shares or other securities carrying such rights but not so convertible
or exchangeable, the amount, if any, by which the consideration payable to the
Bank for such shares or other securities shall exceed the distributive amounts,
excluding dividends, payable on voluntary liquidation of the Bank with respect
to such shares for the principal amount of such securities, as the case may be,
or the redemption price thereof, whichever is higher and any additional amount
thereof payable to the Bank on the exercise of such rights of conversion,
exchange or purchase.  The market value per share of shares of Common Stock
shall be deemed to be the fair value fixed by the Board of Directors.

               (iv) On any merger or reorganization of the Bank,
reclassification of the shares of the Bank, or sale or conveyance of all, or
substantially all of the assets of the Bank to another bank, each share of
Series A Preferred Stock shall be convertible into the same kind and amounts of
securities, including shares of stock or other assets, or both, to which the
number of shares of Common Stock of the Bank which would have been deliverable
on conversion of such shares of Series A Preferred Stock immediately prior to
such merger, reorganization, reclassification, sale or conveyance would have
been entitled.

          c.   FRACTIONAL SHARES.  Neither fractional shares, script nor
warrants evidencing such shares shall be issued on conversion of the shares of
Series A Preferred Stock as herein provided, but the Bank shall, in lieu
thereof, pay in cash to the holders who would but for this provision be entitled
to receive such fractional shares, the pro rata value thereof as determined by
the conversion price, as adjusted.

          d.   STATEMENTS OF ADJUSTED CONVERSION PRICE.  Whenever the Conversion
Price is adjusted, as herein provided, the Bank shall forthwith maintain in its
office and file with any transfer agent or agents for its Series A Preferred
Stock a statement,


                                        - 5 -
<PAGE>


signed by an officer of the Bank, showing in detail the facts requiring the
adjustment and the Conversion Price after such adjustment.  Any such transfer
agent or agents shall be under no duty or responsibility with respect to such
statement except to exhibit it from time to time to any holder of shares of
Series A Preferred Stock desiring an inspection thereof.

          e.   NOTICE TO HOLDERS OF SERIES A PREFERRED STOCK.  In the event that
the Bank shall take a record of the holders of its Common Stock either for the
purpose of entitling them to receive a dividend or any other distribution
payable otherwise than in cash or for the purpose of entitling them to subscribe
for or purchase shares of any class or to receive any other rights, in the event
of any merger or reorganization of the Bank, a reclassification of its shares
(other than a subdivision or combination of its outstanding Common Stock) or
conveyance of all, or substantially all, of its assets to another bank, or in
the event of the voluntary or involuntary dissolution, liquidation or winding up
of the Bank, the Bank shall cause to be mailed to any transfer agent or agents
for the Series A Preferred Stock, at least ten days prior to the date
hereinafter specified a notice stating the date on which record is to be taken
for the purpose of such dividend, distribution or rights, or the date such
merger, reclassification, reorganization, conveyance, dissolution or liquidating
or winding up, as the case may be, is to take place, and the date, if any, is to
be fixed, as of which holders of record of the Common Stock shall be entitled to
exchange their shares for securities or other properties deliverable on such
merger, reorganization, reclassification, conveyance, dissolution, liquidation
or winding up.

          f.   RESERVATION OF COMMON STOCK ON CONVERSION.  The Bank shall at all
times reserve and keep available out of its authorized but unissued shares of
Common Stock solely for the purpose of effecting conversion of shares of
Series A Preferred Stock, the full number of shares of Common Stock deliverable
on conversion of all shares of Series A Preferred Stock from time to time
outstanding, and shall obtain and keep in force such permits as required in
order to enable it to lawfully issue and deliver such number of shares of Common
Stock.  The Bank shall, from time to time, in accordance with the laws of
California and subject to obtaining the necessary corporate action therefor,
increase the authorized number of shares of Common Stock if at any time an
issued number of authorized shares become insufficient to permit conversion of
all shares of Series A Preferred Stock at the time outstanding.

     RESOLVED FURTHER, that the Chairman of the Board, the President, or any
Vice President, the Secretary, the Chief Financial Officer or any assistant
Secretary or assistant Chief Financial Officer of this Bank are each hereby
authorized to execute, verify and file a Certificate of Determination of
Preferences in accordance with California law.


                                        - 6 -
<PAGE>


     3.   The authorized number of shares of Preferred Stock of the Bank if
1,000,000.  The number of shares constituting Series A Preferred Stock, none of
which has been issued, is 430,000.

     IN WITNESS WHEREOF, the undersigned have executed this Certificate on
May 16, 1986.



                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        Peter Q. Davis, President


                                        /s/ Timothy Malott
                                        -----------------------------
                                        Timothy Malott, Secretary


     The undersigned declare under penalty of perjury that the matters set forth
in the foregoing certificate are true of their own knowledge.

     Executed this 16th day of May, 1986, in San Diego, California.


                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        Peter Q. Davis


                                        /s/ Timothy Malott
                                        -----------------------------
                                        Timothy Malott


                                        - 7 -
<PAGE>


                                   BANK OF COMMERCE

                          CERTIFICATE OF OFFICERS DECREASING
                   THE NUMBER OF SHARES CONSTITUTING 10% CUMULATIVE
                     CONVERTIBLE SERIES A PREFERRED STOCK TO ZERO

                             CERTIFICATE OF DETERMINATION
                     FOR THE FLOATING RATE NON-CUMULATIVE VOTING
                         CONVERTIBLE SERIES B PREFERRED STOCK

                                     NO PAR VALUE
                            STATED VALUE $10.75 PER SHARE

                      PURSUANT TO SECTIONS 401(a) AND (c) OF THE
                  GENERAL CORPORATION LAW OF THE STATE OF CALIFORNIA


     The undersigned, PETER Q. DAVIS and LARRY A. BURNS, certify that:

     1.   They are the duly elected and acting President and Secretary,
respectively, of Bank of Commerce, a California corporation (the "Corporation").

     2.   The attached resolutions of the Board of Directors of the Corporation
have (i) reduced the number of authorized shares of the Corporation's 10%
Cumulative Convertible Series A Preferred Stock from 430,000 to zero, there
being no shares of such series outstanding, and (ii) duly authorized the
issuance of a series of the preferred stock of the Corporation which shall
consist of 500,000 shares and has, in all material respects, determined the
designation of and the rights, preferences, privileges and restrictions granted
to and imposed upon the shares of this series, as set forth in such resolution,
pursuant to the authority expressly granted to and vested in the Board of
Directors of the Corporation by the Articles of Incorporation of the
Corporation, as amended.

     3.   The authorized number of shares of all series of preferred stock of
the Corporation is 1,000,000, and the number of shares of this series, none of
which have been issued, is 500,000.

     IN WITNESS WHEREOF, the undersigned have executed this certificate at San
Diego, California on July 24, 1995.


                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        PETER Q. DAVIS, President


                                        /s/ Larry A. Burns
                                        -----------------------------
                                        LARRY A. BURNS, Secretary


<PAGE>



     The undersigned declare under penalty of perjury that the statements in the
above certificate are true and correct of their own knowledge.  Executed at San
Diego, California on July 24, 1995.



                                        /s/ Peter Q. Davis
                                        -----------------------------
                                        PETER Q. DAVIS


                                        /s/ Larry A. Burns
                                        -----------------------------
                                        LARRY A. BURNS

                                          2
<PAGE>


                                   BANK OF COMMERCE

             RESOLUTIONS REDUCING THE NUMBER OF AUTHORIZED SHARES OF 10%
               CUMULATIVE CONVERTIBLE SERIES A PREFERRED STOCK TO ZERO
               AND DETERMINING THE RIGHTS, PREFERENCES, PRIVILEGES AND
                     RESTRICTIONS GRANTED TO AND IMPOSED UPON THE
                  FLOATING RATE NON-CUMULATIVE VOTING TO CONVERTIBLE
                               SERIES B PREFERRED STOCK


     WHEREAS, Article III of the articles of incorporation of Bank of Commerce
(the "CORPORATION") authorizes the issuance of up to 1,000,000 shares of
Preferred Stock, and that Article further authorizes the Board of Directors of
the Corporation to (i) within limits and restrictions stated in any resolution
or resolutions of the Board of Directors originally fixing the number of shares
continuing any series, to increase or decrease (but not below the number of
shares of such series then outstanding) the number of shares of any series
subsequent to the issue of shares of that series; and (ii) determine and alter
the rights, preferences, privileges and restrictions granted to or imposed upon
any wholly unissued series of Preferred Stock, and to fix the number of shares
of any series of Preferred Stock and the designation of any such series of
Preferred Stock; and

     WHEREAS, the Board of Directors of the Corporation previously authorized
the issuance of up to 430,000 shares of the Corporation's 10% Cumulative
Convertible Series A Preferred Stock ("SERIES A PREFERRED STOCK"), and a
certificate of determination was filed with the California Secretary of State
setting forth the rights, preferences, privileges, and restrictions relating to
the Series A Preferred Stock; and

     WHEREAS, the resolutions of the Board of Directors originally fixing the
number of shares constituting the Series A Preferred did not set any limits or
restrictions relating to the increase or decrease of the number of shares of
Series A Preferred Stock; and

     WHEREAS, there are currently no shares of the Corporation's Series A
Preferred Stock outstanding and it is the desire of the Board of Directors to
reduce the number of authorized shares of Series A Preferred Stock from 430,000
to zero; and

     WHEREAS, the Board of Directors desires to authorize the issuance of a
series of the preferred stock of the Corporation, which will consist of 500,000
shares, and determine, in all material respects, the designation of and the
rights, preferences, privileges and restrictions to be granted to and imposed
upon the shares of this series, as set forth below, in addition to those set
forth in the Articles of Incorporation of the Corporation, as amended;

     NOW, THEREFORE, BE IT RESOLVED that pursuant to the authority expressly
granted to and vested in the Board of Directors of the Corporation by provisions
of the Articles of Incorporation of the Corporation, as amended, this Board of
Directors hereby (i) reduces the authorized number of shares of Series A
Preferred Stock to zero; and (ii) authorizes the issuance


                                          3
<PAGE>


of a series (this "SERIES") of the preferred stock of the Corporation (the
"PREFERRED STOCK") which shall consist of 500,000 shares, and this Board of
Directors hereby determines the designation of and the rights, preferences,
privileges and restrictions granted to and imposed upon the shares of this
Series, in addition to those set forth in the Articles of Incorporation of the
Corporation, as amended, as follows:

     SECTION 1.  DEFINITIONS.  As used herein, the following terms shall have
the following respective meanings:

     "BUSINESS DAY" shall mean a day other than Saturday, Sunday and days on
which banking institutions in San Diego, California are authorized or obligated
by law, regulation or executive order to close.

     "COMMON STOCK" shall mean any shares of the Corporation which have no
preference over any other shares of the Corporation with respect to payment of
dividends or any voluntary or involuntary dissolution, winding-up or
distribution of all of the assets of the Corporation, and which are not subject
to redemption by the Corporation.  However, Common Stock issuable upon
conversion of shares of this Series shall not include any shares of the class
designated as Common Stock, as of the original date of issuance of shares of
this Series, or shares of the Corporation of any class or classes resulting from
any reclassification or reclassifications thereof and which have no preference
in respect of dividends or any voluntary or involuntary dissolution, winding-up
or distribution of all of the assets of the Corporation, and which are not
subject to redemption by the Corporation; provided, however, that if at any time
there shall be more than one such resulting class, the rights and privileges of
each such class then so issuable shall be determined by the Board of Directors
of the Corporation (whose determination shall be conclusive and shall be
described in a resolution adopted with respect thereto).

     "JUNIOR SHARES" shall mean Preference Shares of any class or series which
are by their terms expressly made junior to shares of this Series at any time
outstanding both as to the payment of dividends and as to the distribution of
assets upon any voluntary or involuntary dissolution, winding-up or distribution
of all of the assets of the Corporation.

     "PARITY SHARES" shall mean Preference Shares which are by their terms in
parity or on a par with the shares of this Series at the time outstanding, both
as to the payment of dividends and as to the distribution of assets upon any
voluntary or involuntary dissolution, winding-up or distribution of all of the
assets of the Corporation.

     "PREFERENCE SHARES" shall mean any class or series of the Corporation
ranking prior to at least one other class or series of shares of the Corporation
both as to the payment of dividends and the distribution of assets on any
voluntary or involuntary dissolution, winding-up or distribution of all of the
assets of the Corporation.

     SECTION 2.  DESIGNATION.  The designation of this Series shall be Floating
Rate Non-Cumulative Voting Convertible Series B Preferred Stock (no par value,
stated value $10.75 per

                                          4
<PAGE>


share).  The number of shares of this Series shall be 500,000.  The liquidation
price of this Series shall be $10.75 per share.  This Series shall have no
maturity date.

     SECTION 3.  DIVIDENDS.

          (a)  Subject to the provisions hereof, the annual rate of dividends
payable on each share of this Series shall be 8.75% until January 15, 1996, and
thereafter shall be the "Prime Rate" most recently published in the Wall Street
Journal, Western Edition under the heading of "Prime Rate" in the section of the
Wall Street Journal entitled "Money Rates," as of the preceding July 15 (with
respect to a dividend payable on January 15) or January 15 (with respect to a
dividend payable on July 15), with a maximum rate of 10.75% and a minimum rate
of 6.75%.  Dividends shall be calculated from the date of issue and payable, in
each case semi-annually on the 15th day of January and July of each year
("DIVIDEND PAYMENT DATE"), commencing January 15, 1996, unless any such day is
not a Business Day, in which event on the next Business Day.  The amount of
dividends payable on shares of this Series for each full semi-annual dividend
period shall be computed by dividing by two the annual rate per share set forth
in this Section 3(a).  The amount of dividends payable on shares of this Series
for any period less than a full semi-annual dividend period shall be computed on
the basis of a 360-day year of twelve 30-day months.  Dividends shall be paid,
when, as and if declared by the Board of Directors, to record holders of shares
of this Series as of the close of business on the preceding December 1 with
respect to a dividend payable on January 15 and the preceding June 1 with
respect to a dividend payable on July 15, except that if such date for
determination of record holders is not a Business Day, such day shall be the
next Business Day (the "DIVIDEND RECORD DATE").

          (b)  The holders of shares of this Series shall be entitled to
receive, when, as and if declared by the Board of Directors and out of the
assets of the Corporation which are by law available for the payment of
dividends, non-cumulative dividends payable in cash.

          (c)  (i)   Dividends on the shares of this Series shall be
non-cumulative; therefore, if a full or partial dividend on the shares of this
Series with respect to any Dividend Period (as defined below) is not declared by
the Board of Directors of the Corporation, the Corporation shall have no
obligation at any time to pay a full or partial dividend on the shares of this
Series in respect of such Dividend Period.  The Corporation shall have no
obligation to declare or pay any full or partial dividend on the shares of this
Series even if it has the legal capacity or funds available to do so.  Holders
of the shares of this Series shall not be entitled to any dividends in excess of
the non-cumulative dividends declared by the Board of Directors as set forth in
this Section 3.

               (ii)  Each period beginning on the day next following a Dividend
Payment Date and ending on the next succeeding Dividend Payment Date shall be a
"DIVIDEND PERIOD."  Dividends shall accrue but not compound on a daily basis at
the semi-annual dividend rate in effect at such time.


                                          5
<PAGE>


               (iii) Except as provided in clause (iv) of this Section 3(c), no
dividends shall be declared or paid or set apart for payment on any Parity
Shares in respect of any dividend period unless (A) except with respect to any
series of Preferred Stock that at that time pays dividends on a periodic basis
different from that of this Series, dividends on all outstanding shares of this
Series for the then current Dividend Period shall have been paid in full or
contemporaneously are declared and paid or declared and a sum sufficient for the
payment thereof is set apart for such payment and (B) with respect to any series
of Preferred Stock that at that time pays dividends on a periodic basis
different from that of this Series, full dividends on all outstanding shares of
this Series for the immediately preceding Dividend Period shall have been
declared and paid.

               (iv)  In the event that dividends are not paid in full (or a sum
sufficient for such full payment set apart) upon the shares of this Series or
any Parity Shares, dividends upon shares of this Series and dividends upon such
Parity Shares may be declared by the Board of Directors pro rata with respect
thereto so that the amount of dividends per share on this Series and such Parity
Shares so declared shall bear to each other (A) except with respect to any
Parity Shares as to which at that time dividends are payable on a periodic basis
different from that of this Series, the same ratio that dividends per share on
the shares of this Series for the then current Dividend Period (which shall not
include any accumulation in respect of unpaid dividends for prior Dividend
Periods) and full dividends, including accumulations, if any, in respect of
unpaid dividends for prior dividend periods, on such Parity Shares, bear to each
other and (B) with respect to any Parity Shares as to which at that time
dividends are payable on a periodic basis different from that of this Series,
the same ratio that dividends per share on the shares of this Series for the
immediately preceding Dividend Period (which shall not include any accumulation
in respect of unpaid dividends for prior Dividend Periods) and full dividends,
including accumulations, if any, in respect of unpaid dividends, for prior
dividend periods on such Parity Shares, bear to each other.

               (v)   If full dividends on all outstanding shares of this Series
at that rate per share set out in Section 3(a) shall not have been declared and
paid or set aside for payment for the immediately preceding Dividend Period, the
Corporation shall not, until full dividends have been declared and paid or set
aside for payment on all outstanding shares of this Series for a subsequent
Dividend Period, (A) declare or pay or set aside for payment any dividends or
make any other distribution or payments on the Common Stock or any Junior Shares
or (B) make any payment on account of the purchase, redemption or other
retirement of, or pay or make available any monies for a sinking fund for the
redemption of, any shares of Common Stock or Junior Shares.

     SECTION 4.  OPTIONAL REDEMPTION.

          (a)  All or any portion of the shares of this Series shall be
redeemable for cash, in whole or in part, at any time and from time to time, at
the option of the Board of Directors, from such holders in such numbers as the
Board of Directors shall determine, at a redemption price of $10.75 per share
plus, in each case, an amount equal to the dividends declared but unpaid thereon
to the redemption date.


                                          6
<PAGE>


          (b)  If at any time the Corporation elects to redeem all or any
portion of the shares of this Series, it shall give written notice to the
holders of such shares.  Such notice shall state the number of shares to be
redeemed and the date of such redemption.  Such notice must be given at least 30
days and no more than 60 days in advance of the date of redemption.  Each such
notice shall be given by means of first class mail, postage prepaid, and shall
be deemed duly given upon mailing to such holder to the holder's last known
address, as shown on the records of the Corporation, but neither failure to mail
such notice, nor any defect therein or in the mailing thereof, to any particular
holder shall affect the sufficiency of the notice or the validity of the
proceedings for redemption with respect to such holder if actual notice is given
to such holder.  On and after the redemption date, the holders of such redeemed
shares shall cease to be "shareholders" with respect to such shares and shall
have no interest in or claims against the Corporation by virtue thereof and
shall have no voting or other rights with respect to such shares, with the
exception of the right to receive the cash payable upon such redemption, without
interest thereon, upon surrender of their certificates.  The shares evidenced by
any such certificates, whether surrendered or not, will no longer be outstanding
on and after such date.

          (c)  If, on or prior to any date fixed for redemption of shares of
this Series, as herein provided, the Corporation deposits with any other bank or
trust company in California, as a trust fund, a sum sufficient to redeem, on the
date fixed for redemption, the shares called for redemption, with irrevocable
instructions and authority to the bank or trust company to publish the
redemption thereof, or to complete such publication theretofore commenced, and
to pay, on and after the date fixed for redemption or prior thereto, the
redemption price of the shares to the respective holders, then from and after
the date of the deposit, even though such date may be prior to the date fixed
for redemption, the shares so called shall be redeemed and dividends on those
shares shall cease to accrue after the date fixed for redemption.  The deposit
shall constitute full payment of the redemption price to the holders of the
shares so called and from and after the date of the deposit the shares shall no
longer be outstanding and the holders thereof shall cease to be shareholders
with respect to such shares and shall have no rights with respect thereto,
except the right to receive from the bank or trust company payment of the
redemption price of the shares, without interest or the right to convert said
shares to Common Stock.  Any money so deposited on account of the redemption
price as to redeemable shares converted after the making of the deposit shall be
repaid to the Corporation forthwith on the conversion of such shares.

     SECTION 5.  LIQUIDATION.

          (a)  In the event of the voluntary or involuntary dissolution,
winding-up or distribution of all of the assets of the Corporation, the
liquidation price of shares of this Series shall be $10.75 per share, plus the
amount per share of any dividends declared but unpaid thereon at the date of
such dissolution, winding-up or distribution.

          (b)  In the event of the voluntary or involuntary dissolution,
winding-up or distribution of all of the assets of the Corporation, the holders
of shares of this Series shall be entitled to receive the liquidation price of
such shares held by them in preference to and in priority over any distributions
upon the shares of Common Stock and all Junior Shares.  If the


                                          7
<PAGE>


assets of the Corporation are not sufficient to pay in full the liquidation
price payable to the holders of shares of this Series then outstanding and the
liquidation price payable to the holders of all Parity Shares then outstanding,
then the holders of all such shares shall share ratably in such distribution of
assets in accordance with the amounts which would be payable on such
distribution if the amounts to which the holders of shares of this Series and
the holders of Parity Shares are entitled were paid in full.

          (c)  Neither the consolidation nor merger of the Corporation with or
into any other corporation, nor the consolidation or merger or any other
corporation with or into the Corporation, shall be considered a dissolution,
winding-up or distribution of all of the assets of the Corporation within the
meaning of this Section 5.

     SECTION 6.  CONVERSION.

          (a)  Subject to the provisions for adjustment hereinafter set forth,
and the other provisions of this Section 6, each share of this Series shall be
convertible at the option of the holder thereof, at any time, in the manner
hereinafter set forth, into the whole number of fully paid shares of Common
Stock obtained by dividing $10.75 by the conversion price, determined as
hereinafter provided, in effect on the date of conversion.  The price at which
shares of Common Stock shall be delivered upon conversion (hereinafter referred
to as the "CONVERSION PRICE") shall be initially $10.75 per share of Common
Stock.  The Conversion Price shall be adjusted in certain instances as provided
in Section 6(c).

          (b)  Any holder of shares of this Series desiring to convert the same
into shares of Common Stock shall surrender the certificate or certificates for
the shares of this Series being converted, fully endorsed, at the principal
office of the Corporation or at a bank, trust company or other conversion agent
appointed by the Corporation for that purpose, accompanied by a written notice
of conversion specifying the number (in whole shares) of shares of this Series
to be converted and the name in which such holder wishes the certificate or
certificate for shares of Common Stock to be issued.  In the event that such
notice shall specify a name other than that of such holder, such notice shall be
accompanied by payment of all transfer taxes payable upon the issuance of shares
of Common Stock in such name.  In the event that less than all of the shares of
this Series represented by a certificate are to be converted by the holder, upon
such conversion the Corporation shall issue and deliver, or cause to be issued
and delivered, to the holder a certificate or certificates for the shares of
this Series not so converted.  A holder may convert a minimum of the lesser of
100 shares or the full number held.

          (c)  The Conversion Price shall be adjusted from time to time as
follows:

               (i)   In the event that the Corporation shall, at any time or
from time to time while any of the shares of this Series are outstanding,
(A) pay a dividend in shares of its Common Stock (B) subdivide its outstanding
shares of Common Stock into a larger number of shares, (C) combine its
outstanding shares of Common Stock into a smaller number of shares or (D) issue
by reclassification of its shares of Common Stock any shares of capital stock of
the Corporation, then the Conversion Price for the shares of this Series in
effect immediately prior to


                                          8
<PAGE>


such action shall be adjusted so that the holder of any shares of this Series
thereafter surrendered for conversion shall be entitled to receive the number of
shares of Common Stock or other securities of the Corporation which it would
have owned or been entitled to receive after the happening of any of the events
described above had such shares of this Series been converted immediately prior
to the happening of such event.  Any adjustment made pursuant to this
Section 6(c)(i) shall become effective, in the case of a dividend, on the
payment date retroactive to immediately after the opening of business on the day
following the record date for the determination of shareholders entitled to
receive such dividend, subject to the provisions of Section 6(c)(viii), and
shall become effective in the case of a subdivision, combination or
reclassification immediately after the opening of business on the day following
the date which such subdivision, combination or reclassification, as the case
may be, became effective.

               (ii)  In the event that the Corporation shall, at any time or
from time to time while any of the shares of this Series are outstanding,
authorize the issuance of rights or warrants to all holders of its shares of
Common Stock entitling them (within a 45-day period) to subscribe for or
purchase shares of Common Stock at a price per share less than the Current
Market Price per share of Common Stock (as defined in Section 6(c)(iv)) at the
record date for determining those shareholders entitled to receive such rights
or warrants, the Conversion Price in effect immediately prior to the granting of
such rights or warrants shall be adjusted so that the same shall equal the price
determined by multiplying such Conversion Price by a fraction, of which the
numerator shall be the number of shares of Common Stock outstanding immediately
prior to such record date plus the number of additional shares of Common Stock
offered for subscription or purchase, and of which the denominator shall be the
number of shares of Common Stock outstanding immediately prior to such record
date plus the number of shares which the aggregate offering price of the total
number of shares so offered would purchase at such Current Market Price.  Such
adjustment shall become effective on the date of such issuance retroactive to
immediately after the opening of business on the day following the record date
for the determination of shareholders entitled to receive such rights or
warrants, subject to the provisions of Section 6(c)(viii) below.  In determining
whether any rights or warrants entitle the holders to subscribe for or purchase
shares of Common Stock at less than such Current Market Price, and in
determining the aggregate offering price of such shares, there shall be taken
into account any consideration received by the Corporation for such rights or
warrants.  The value of such consideration, if other than cash, will be
determined by the Board of Directors of the Corporation (whose determination
shall be conclusive and described in a resolution with respect thereto).

               (iii) In the event that the Corporation shall, at any time or
from time to time while any of the shares of this Series are outstanding,
distribute to all holders of shares of its Common Stock evidences of its
indebtedness or securities or assets (excluding any rights or warrants referred
to in Section 6(c)(ii), or cash dividends payable out of retained earnings or
net income), the Conversion Price in effect immediately prior to such
distribution shall be adjusted so that the same shall equal the price determined
by multiplying such Conversion Price by a fraction, of which the numerator shall
be the Current Market Price per share of Common Stock (as defined in
Section 6(c)(iv)) on the record date for such distribution, and of which the
denominator shall be such Current Market Price per share of the Common Stock,
less the then


                                          9
<PAGE>


fair market value as determined by the Board of Directors of the Corporation
(whose determination shall be conclusive and described in a resolution adopted
with respect thereto) of the portion of such evidences of indebtedness,
securities or assets so distributed applicable to one share of Common Stock.
Such adjustment shall become effective on the date of such distribution
retroactive to immediately after the opening of business on the date following
the record date for the determination of shareholders entitled to receive such
distribution, subject to the provisions of Section 6(c)(viii).  For the purposes
of this Section 6(c)(iii), retained earnings or net income shall be computed by
adding thereto all charges against retained earnings on account of dividends
paid in shares of Common Stock in respect of which the Conversion Price has been
adjusted, all as determined by the independent public accountants then regularly
auditing the accounts of the Corporation, whose determination shall be
conclusive.

               (iv)  For the purpose of any computation under
Sections 6(c)(ii), 6(c)(iii) and 6(l) hereof, the "CURRENT MARKET PRICE" per
share of Common Stock at any date shall be such price as listed on any national
securities exchange, Nasdaq, or if not so listed, the average closing bid price
as quoted by market makers or institutions serving similar functions, on the
last Business Day before conversion or other event requiring the valuation of
the Common Stock.

               (v)   No adjustment in the Conversion Price shall be required
unless such adjustment would require an increase or decrease of at least 1% in
the Conversion Price then in effect; provided, however, that any adjustments
which by reason of this Section 6(c)(v) are not required to be made shall be
carried forward and taken into account in any subsequent adjustment.  All
calculations under this Section 6 shall be made to the nearest cent or to the
nearest one-hundredth of a share, as the case may be.

               (vi)  Whenever the Conversion Price is adjusted as herein
provided, the Corporation shall cause to be prepared and filed with the transfer
agent for the shares of this Series a certificate signed by its chief financial
officer setting forth the Conversion Price after such adjustment and setting
forth a brief statement of the facts and calculation requiring such adjustment,
which certificate shall, in the absence of manifest error, be conclusive
evidence of the correctness of such adjustment, and shall cause a notice,
stating that such adjustment has been effected and the adjusted Conversion
Price, to be mailed to the holders of shares of this Series at their addresses
as they shall appear on the books of the Corporation.

               (vii) Except as herein otherwise provided, no adjustment in the
Conversion Price shall be made by reason of the issuance of shares of Common
Stock, or any securities convertible into or exchangeable for shares of Common
Stock, or carrying the right to purchase any of the foregoing, in exchange for
cash, property or services.  Notwithstanding the other provisions of this
Section 6, no adjustment in the Conversion Price shall be made for (A) rights to
purchase Common Stock pursuant to a plan for reinvestment of dividends or
interest, including optional cash purchases, (B) a change in the par value of,
or a change to or from no par value for, the Common Stock or (C) rights to
purchase Common Stock pursuant to an employee or director benefit plan.


                                          10
<PAGE>


               (viii)    If the Corporation shall take a record of the holders
of its Common Stock for the purpose of entitling them to receive any dividend or
any subscription or purchase rights or any distribution and shall, thereafter
and before the distribution to shareholders of any such dividend, subscription
or purchase rights or distribution, legally abandon its plan to pay or deliver
such dividend, subscription or purchase rights or distribution, then no
adjustment of the Conversion Price shall be required by reason of the taking of
such record.

          (d)  In the event of any consolidation or merger of the Corporation
with or into any other corporation (other than a merger in which the Corporation
is the surviving corporation), or in the case of any sale or transfer of all or
substantially all the assets of the Corporation, or in the case of
reclassification of the Common Stock, a holder of the shares of this Series will
be entitled, after the occurrence of any such event, to receive on conversion
the consideration which the holder would have received had it converted the
shares of this Series owned by it into Common Stock immediately prior to the
occurrence of such event.  In the event of a cash merger of the Corporation with
or into another corporation or any other cash transaction of the type mentioned
above, the effect of these provisions is that the conversion feature of the
shares of this Series would thereafter be limited to converting the shares of
this Series at the Conversion Price in effect at such time into the same amount
of cash per share that such holder would have received had such holder converted
the shares of this Series owned by it into Common Stock immediately prior to the
effective date of such cash merger or transaction.  Depending upon the terms of
such cash merger or transaction, the aggregate amount of cash so received on
conversion could be more or less than the liquidation price of the shares of
this Series.

          (e)  The Corporation may make such reductions in the Conversion Price,
in addition to those required by this Section 6, as it considers to be advisable
in order to avoid or diminish any income tax to any holder of Common Stock
resulting from any dividend or distribution of stock or issuance of rights or
warrants to purchase or subscribe for stock or from any event treated as such
for income tax purposes or for any other reason.  The Corporation shall have the
power to resolve any ambiguity or correct any error in this Section 6 and its
actions in so doing shall be final and conclusive.

          (f)  If at any time while any of the shares of this Series are
outstanding:

               (i)     the Corporation shall declare a dividend (or any other
distribution) on its Common Stock, excluding any cash dividends;

               (ii)    the Corporation shall authorize the issuance to all
holders of its Common Stock of rights or warrants to subscribe for or purchase
Common Stock or of any other subscription rights or warrants;

               (iii)   the Corporation shall approve any reclassification of
Common Stock of the Corporation (other than a subdivision or combination
thereof) or any consolidation or merger to which the Corporation is a party and
for which approval of any shareholders of


                                          11
<PAGE>


Common Stock of the Corporation is required, or the sale or transfer of all or
substantially all of the assets of the Corporation; and

               (iv)    the Corporation shall approve or there shall occur, as
the case may be, the voluntary or involuntary dissolution, winding-up or
distribution of all of the assets of the Corporation,

     then the Corporation shall cause to be mailed to the transfer agent for
shares of this Series and shall cause to be mailed to the holders of record of
the outstanding shares of this Series at their addresses as they appear on the
books of the Corporation, at least 10 days before the date hereinafter specified
(or the earlier of the dates hereinafter specified, in the event that more than
one date is specified), a notice stating (A) the date on which a record is to be
taken for the purpose of such dividend, distribution, rights or warrants, or, if
a record is not to be taken, the date as of which the holders of Common Stock of
record to be entitled to such dividend, distribution, rights or warrants are to
be determined or (B), the date on which any such reclassification,
consolidation, merger, sale, transfer, dissolution, winding-up or distribution
of all of the assets of the Corporation is expected to become effective, and the
date as of which it is expected that holders of Common Stock of record shall be
entitled to exchange their Common Stock for securities or other property
(including cash), if any, deliverable upon such reclassification, consolidation,
merger, sale, transfer, dissolution, winding-up or distribution of all of the
assets of the Corporation.  The failure to give or receive the notice required
by this Section 6(f) or any defect therein shall not affect the legality or
validity of any such dividend, distribution, right or warrant or other action.

          (g)  The Corporation will pay any and all documentary, stamp and
similar taxes payable to the United States of America or any political
subdivision or taxing authority thereof or therein in respect of the issue or
delivery of shares of Common Stock on conversion of shares of this Series
pursuant hereto; provided, however, that the Corporation shall not be required
to pay any tax which may be payable in respect of any transfer involved in the
issue or delivery of shares of Common Stock in a name other than that of the
record holder of the shares of this Series to be converted and no such issue or
delivery shall be made unless and until the person requesting such issue or
delivery has paid to the Corporation the amount of any such tax or has
established, to the satisfaction of the Corporation, that such tax has been
paid.

          (h)  The Corporation shall reserve, free from preemptive rights, out
of authorized but unissued Common Stock, sufficient shares of Common Stock to
provide for the conversion of the shares of this Series from time to time as
such shares of this Series are presented for conversion.

          (i)  If any shares of Common Stock to be reserved for the purpose of
conversion of shares of this Series hereunder require registration with or
approval of any governmental authority under any federal or state law before
such shares may be validly issued or delivered upon conversion, then the
Corporation shall in good faith as expeditiously as possible endeavor to secure
such registration or approval, as the case may be.


                                          12
<PAGE>


          (j)  Before any action is taken which would cause an adjustment
reducing the Conversion Price for shares of this Series below the then par
value, if any, of the Common Stock, there will be taken by the Corporation all
corporate action which may, in the opinion of its counsel, be necessary in order
that there may be validly and legally issued fully paid and non-assessable
(except to the extent provided in the California Financial Code) shares of
Common Stock at such adjusted Conversion Price.

          (k)  The Corporation shall take all action necessary so that all
shares of Common Stock which may be issued upon conversion of shares of this
Series will upon issue be validly issued, fully paid and non-assessable (except
to the extent provided in the California Financial Code) and free from all liens
and charges with respect to the issue or delivery thereof.

          (l)  Fractional shares of Common Stock shall not be issued upon
conversion of shares of this Series.  If more than one share of this Series
shall be surrendered for conversion at one time by the same holder, the number
of full shares which shall be issuable upon conversion shall be equal to the
number obtained by multiplying the aggregate number of shares of this Series so
surrendered by $10.75 and dividing such product by the then current Conversion
Price.  Instead of any fractional interest in a share of Common Stock which
would otherwise be issuable upon conversion of any shares of this Series, the
Corporation shall pay a cash adjustment in respect of such fractional interest
to the nearest one-hundredth of a share in an amount equal to the Current Market
Price of such fractional interest on the day immediately preceding the date of
conversion (or, if such day is not a trading day, then on the immediately
preceding trading day).

          (m)  Shares of this Series which have been called for redemption shall
have no conversion rights after 5:00 p.m., Pacific Time, on the last Business
Day preceding such redemption date, unless the Corporation defaults in the
payment of the redemption price.

          (n)  The Corporation shall not be obligated to accept shares of this
Series for conversion if the number of such shares surrendered to the
Corporation is less than the lesser of the number of shares set forth on the
certificate or certificates for shares to be converted or 100.

     SECTION 7.  REACQUIRED SHARES.  All shares of this Series which are at any
time redeemed pursuant to Section 4 above or converted pursuant to Section 6
above, and all shares of this Series which are otherwise reacquired by the
Corporation and subsequently canceled by the Board of Directors of the
Corporation, shall have the status of authorized but unissued preferred stock,
without designation as to series, subject to reissuance by the Board of
Directors of the Corporation as shares of this Series or shares of any one or
more other series.

     SECTION 8.  VOTING RIGHTS.

          (a)  Holders of shares of this Series shall be entitled to vote on the
same basis, share for share, as the holders of shares of Common Stock and the
shares of this Series and the shares of Common Stock will vote as a single
class.  The number of votes per share of this Series which may be cast shall be
adjusted at such time or times as the Conversion Price is adjusted so


                                          13
<PAGE>


that the number of votes per share of this Series which may be cast shall always
equal the full number of shares of Common Stock into which each share of this
Series may be converted.

          (b)  The affirmative vote or consent of the holders of at least a
majority of the outstanding shares of this Series, voting as a separate class,
will be required (i) to authorize, create or issue, or increase the authorized
or issued amount of shares of, any class or series of stock ranking senior to
the shares of this Series, either as to dividends or as to distributions upon
liquidation, dissolution or winding-up or (ii) to amend, alter or repeal any
provision of the Corporation's Articles of Incorporation that would materially
and adversely affect the rights, preferences or privileges of holders of shares
of this Series; provided, however, that any increase in the authorized number of
shares of this Series, or the creation or issuance of any Parity Shares or
Junior Shares, shall not be deemed to materially and adversely affect such
rights, preferences or privileges.

     SECTION 9.  NO PREEMPTIVE RIGHTS.  The holders of shares of this Series
shall have no preemptive rights, including preemptive rights with respect to any
shares of capital stock or other securities of the Corporation convertible into
or carrying rights or options, to subscribe to or purchase any such shares or
other shares to be offered by the Corporation.

     SECTION 10.  SINKING FUND.  No sinking fund shall be established for the
retirement or redemption of the Preferred Stock.

     RESOLVED FURTHER, that the officers of the Corporation shall be, and they
hereby are, authorized and directed to take any and all actions which they deem
necessary or proper to carry out the purposes of the foregoing resolution.




                                          14

<PAGE>

                             CERTIFICATE OF AMENDMENT OF
                             ARTICLES OF INCORPORATION OF
                                   BANK OF COMMERCE


     The undersigned certify that:

     1.   They are the President and Assistant Secretary, respectively, of Bank
of Commerce, a California corporation.

     2.   Article III, Section A is amended to read in full as follows:

          A.   The Corporation shall be authorized to issue two classes of
          shares which shall be designated "Common Stock" and "Preferred
          Stock," respectively.  The number of shares of Common Stock
          authorized to be issued shall be Fifty Million (50,000,000) and
          the number of shares of Preferred Stock authorized to be issued
          shall be One Million (1,000,000).

     3.   The foregoing amendment of Articles of Incorporation has been duly
approved by the Board of Directors.

     4.   The foregoing amendment of Articles of Incorporation has been duly
approved by the required vote of shareholders in accordance with Section 902,
California Corporations Code.  The total number of outstanding shares of the
Corporation is 1,482,469 shares of Common Stock and 500,000 shares of Preferred
Stock, for a total of 1,982,469 shares eligible to vote on the foregoing
amendment.  The number of shares voting in favor of the amendment equaled or
exceeded the vote required.  The percentage vote required was more than 50%.

     5.   The foregoing amendment of Articles of Incorporation has been approved
by the required vote of holders of outstanding shares of Common Stock in
accordance with Section 903(a)(1), California Corporations Code.  The total
number of outstanding shares of Common Stock of the Corporation is 1,482,469
shares.  The number of shares of Common Stock voting in favor of the amendment
equalled or exceeded the vote required.  The percentage vote required was more
than 50%.

     We further declare under penalty of perjury under the laws of the State of
California that the matters set forth in this certificate are true and correct
of our own knowledge.


DATED: October 28, 1996            /s/ Peter Q. Davis
                                   ------------------------------------------
                                   Peter Q. Davis, President

                                   /s/ Gary D. Cristofani
                                   ------------------------------------------
                                   Gary D. Cristofani, Asst. Secretary


<PAGE>

                             CERTIFICATE OF AMENDMENT OF
                             ARTICLES OF INCORPORATION OF
                                   BANK OF COMMERCE


     The undersigned certify that:

     1.   They are the President and Assistant Secretary, respectively, of Bank
of Commerce, a California corporation.

     2.   Article III, Section A is amended to read in full as follows:

          A.   The Corporation shall be authorized to issue two classes of
          shares which shall be designated "Common Stock" and "Preferred
          Stock," respectively.  The number of shares of Common Stock
          authorized to be issued shall be Fifty Million (50,000,000) and
          the number of shares of Preferred Stock authorized to be issued
          shall be One Million (1,000,000).  Upon the amendment of this
          article to read as herein set forth, each outstanding share of
          Common Stock is split up and converted into two and one-half
          shares of Common Stock.

     3.   The foregoing amendment of Articles of Incorporation has been duly
approved by the Board of Directors.

     4.   The Board of Directors acting alone has the power, pursuant to
Section 902(c) of the California Corporations Code, to approve and adopt the
foregoing amendment because (i) the corporation has only one class of shares
outstanding, Common Stock, and (ii) the amendment effects only a stock split,
without an increase in the authorized number of shares.  No shares of Preferred
Stock are outstanding.

     We further declare under penalty of perjury under the laws of the State of
California that the matters set forth in this certificate are true and correct
of our own knowledge.




DATED: April 1, 1997               /s/ Peter Q. Davis
                                   ------------------------------------------
                                   Peter Q. Davis, President


                                   /s/ Gary D. Cristofani
                                   ------------------------------------------
                                   Gary D. Cristofani, Asst. Secretary


<PAGE>


                             CERTIFICATE OF AMENDMENT OF
                             ARTICLES OF INCORPORATION OF
                                   BANK OF COMMERCE



     The undersigned certify that:

     1.   They are the President and Secretary, respectively, of Bank of
Commerce, a California corporation.

     2.   Article III, Section A is amended to read in full as follows:

          A.   The Corporation shall be authorized to issue two classes of
          shares which shall be designated "Common Stock" and "Preferred
          Stock," respectively.  The number of shares of Common Stock
          authorized to be issued shall be Fifty Million (50,000,000) and
          the number of shares of Preferred Stock authorized to be issued
          shall be One Million (1,000,000).  Upon the amendment of this
          Article to read as herein set forth, each outstanding share of
          Common Stock is split up and converted into two shares of Common
          Stock.

     3.   The foregoing amendment of Articles of Incorporation has been duly
approved by the Board of Directors.

     4.   The Board of Directors acting alone has the power, pursuant to Section
902(c) of the California Corporations Code, to approve and adopt the foregoing
amendment because (i) the corporation has only one class of shares outstanding,
Common Stock, and (ii) the amendment effects only a stock split, without an
increase in the authorized number of shares.  No shares of Preferred Stock are
outstanding.

     We further declare under penalty of perjury under the laws of the State of
California that the matters set forth in this certificate are true and correct
of our own knowledge.


DATED: October 1, 1997             /s/ Peter Q. Davis
                                   ------------------------------------------
                                   Peter Q. Davis, President


                                   /s/ Gary D. Cristofani
                                   ------------------------------------------
                                   Gary D. Cristofani, Secretary





<PAGE>


                                       BY-LAWS
                                          OF
                                   BANK OF COMMERCE

                         (as amended through March 25, 1998)

                                      ARTICLE I

                                       OFFICES

SECTION 1.     PRINCIPAL EXECUTIVE OFFICE.  The principal executive office of
the corporation is hereby fixed and located at 9918 Hibert Street, San Diego,
California 92131-1018.  The Board of Directors is hereby granted full power and
authority to change said principal executive office from one location to another
with the written approval of the Superintendent of Banks.)

SECTION 2.     OTHER OFFICES.  Other branch, subordinate or business offices may
at any time be established by the Board of Directors at any place or places
approved by the Superintendent of Banks of the State of California (hereinafter
referred to as the "Superintendent").

                                      ARTICLE II

                               MEETINGS OF SHAREHOLDERS

SECTION 1.     PLACE OF MEETINGS.  All annual or other meetings of shareholders
shall be held at the principal executive office of the corporation, or at any
other place within the State of California which may be designated either by the
Board of Directors or by the written consent of all shareholders entitled to
vote at such meeting and not present at the meeting in person or by proxy, given
either before or after the meeting and filed with the secretary of the
corporation.

SECTION 2.     ANNUAL MEETINGS.  The annual meeting of shareholders shall be
held at 9:00 a.m. on the second Tuesday of May of each year provided, however,
that should said day fall upon a legal holiday, then any such annual meeting of
shareholders shall be held at the same time and place on the next day thereafter
ensuing which is a full business day.  At such meetings all directors shall be
elected, reports of the affairs of the corporation shall be considered, and any
other business may be transacted which is within the powers of the shareholders.

SECTION 3.     NOTICE OF ANNUAL MEETINGS.  Written notice of each annual meeting
shall be given to each shareholder entitled to vote, either personally or by
mail or other


                                          1
<PAGE>

means of written communication, charges prepaid, addressed to such shareholders
at this address appearing on the books of the corporation or given to him by the
corporation for the purpose of notice.  If any notice or report addressed to the
shareholder at the address of such shareholder appearing on the books of the
corporation is returned to the corporation by United States Postal service
marked to indicate that the United States Postal Service is unable to deliver
the notice or report to the shareholder at such address, all future notices or
reports shall be deemed to have been duly given without further mailing if the
same shall be available for the shareholder upon written demand of the
shareholder at the principal executive office of the corporation for a period of
one year from the date of giving of the notice or report to all other
shareholders.  If a shareholder gives no address, notice shall be deemed to have
been given him if sent by mail or other means of written communication addressed
to the place where the principal  executive office of the corporation is
situated, or if published at least once in some newspaper of general circulation
in the county in which said principal executive office is located.

All such notices shall be given to each shareholder entitled thereto not less
than ten (10) days or more the sixth (60) days before each annual meeting.  Any
such notice shall be deemed to have been given at the time when delivered
personally or deposited in the mail or sent by other means of written
communication.  An affidavit or declaration of mailing of any such notice in
accordance with the foregoing provisions, executed by the secretary, assistant
secretary or any transfer agent of the corporation shall be prima facie evidence
of the giving of the notice.

Such notices shall specify:

     (a)  The place, the date, and the hour of such meeting;

     (b)  If directors are to be elected, the names of the nominees intended at
     the time of the notice to be presented by management for election;

     (c)  The general nature of a proposal, if any, to take action with respect
     to approval of (i) a contract or other transaction with an interested
     director, (ii) amendment of the Articles of Incorporation, (iii) a
     reorganization of the corporation as defined in Section 181 of the
     California General Corporation Law, (iv) voluntary dissolution of the
     corporation, or (v) a distribution in dissolution other than in accordance
     with the liquidation rights of outstanding preferred shares, if any; and

     (d)  Such other matters, if any, as may be expressly required by statute.


SECTION 4.     SPECIAL MEETINGS.  Special meetings of the shareholders, for the
purpose of taking any action permitted by the shareholders under the California
General Corporation Law, California Banking Law, or the Articles of
Incorporation or By-Laws of


                                          2
<PAGE>

the corporation, may be called at any time by the Chairman of the Board, or the
President, or by the Board of Directors, or by one or more shareholders holding
not less than ten percent (10%) of the votes entitled to be cast at the meeting.
Upon request in writing that a special meeting of the shareholders be called for
any proper purpose, directed to the Chairman of the Board, President, any
Executive Vice President, any Senior Vice President, or the Secretary by any
person (other than the Board) entitled to call a special meeting of
shareholders, the officer forthwith shall cause notice to be given to
shareholders entitled to vote that a meeting will be held at a time requested by
the person or persons calling the meeting, not less than thirty-five (35) nor
more than sixty (60) days after receipt of the request.  Except in special cases
where other express provision is made by statute, notice of such special
meetings shall be given in the same manner as for annual meetings of
shareholders.  In addition, notice of any special meeting shall specify the
general nature of the business to be transacted, and no other business may be
transacted at such meeting.

SECTION 5.     QUORUM.  The presence in person or by proxy of the persons
entitled to vote a majority of the voting shares at any meeting shall constitute
a quorum for the transaction of business.  The shareholders present at a duly
called or held meeting at which a quorum is present may continue to do business
until adjournment, notwithstanding the withdrawal of enough shareholders to
leave less than a quorum if any action taken (other than adjournment) is
approved by at least a majority of the shares required to constitute a quorum.

SECTION 6.     ADJOURNED MEETING AND NOTICE THEREOF.  Any shareholders' meeting,
annual or special, whether or not a quorum is present, may be adjourned from
time to time by the vote of a majority of the shares, the holders of which are
either present in person or presented by proxy, but in the absence of a quorum
no other business may be transacted at such meeting, except as provided in
Section 5 above.

When any shareholders' meeting, either annual or special, is adjourned for more
than forty-five (45) days, or if after adjournment a new record date is fixed
for the adjourned meeting, notice of the adjourned meeting shall be given as in
the case of an original meeting.  Except as provided above, it shall not be
necessary to give any notice of the time and place of the adjourned meeting or
of the business to be transacted thereat, other than by announcement of the time
and place thereof at the meeting at which such adjournment is taken.

SECTION 7.     VOTING.  Unless a record date for voting purposes be fixed as
provided in Section 1 of Article V of these By-Laws, then subject to the
provisions of Sections 702 through 704 of the California General Corporation Law
(relating to voting of shares held by a fiduciary, in the name of a corporation,
or in joint ownership), only persons in whose names shares entitled to vote are
recorded on the stock records of the corporation at the close of business on the
business day next preceding the day on which notice of the


                                          3
<PAGE>

meeting is given or if such notice is waived, at the close of business on the
business day next preceding the day on which the meeting of shareholders is
held, shall be entitled to vote at such meeting, and such day shall be the
record date of such meeting.  Such vote may be via voice or ballot; provided,
however, that all elections for nomination prior to voting.  If a quorum is
present, except with respect to election of directors, the affirmative vote of
the majority of the shares represented at the meeting and entitled to vote on
any matter shall be the act of the shareholders, unless the vote of a greater
number or voting by classes is required by the California General Corporation
Law, the California Banking Law, or the Articles of Incorporation.

Subject to the requirements of the next sentence, every shareholder entitled to
vote at any election for directors shall have the right to cumulate his votes
and give one candidate a number of votes equal to the number of votes to which
his shares are entitled, or to distribute his votes to the same principal among
as many candidates as he shall think fit.  No shareholder shall be entitled to
cumulate votes unless the shareholder has given notice at the meeting prior to
the voting of such shareholder's intention to cumulate his votes.  If any
shareholder has given such notice, all shareholders may cumulate their votes for
candidates in nomination.

The candidates receiving the highest number of votes of shares entitled to be
voted for them, up to the number of directors to be elected, shall be elected.

SECTION 8.     VALIDATION OF DEFECTIVELY CALLED OR NOTICED MEETINGS.  The
transactions of any meeting of shareholders, either annual or special, however
called and noticed and wherever held, shall be as valid as though had at a
meeting duly held after regular call and notice, if a quorum is present either
in person or by proxy, and if, either before or after the meeting, each of the
persons entitled to vote, not present in person or by proxy, or who, though
present, has at the beginning of the meeting properly objected to the
transaction of any business because the meeting was not lawfully called or
convened, or to particular matters of business legally required to be included
in the notice, but not so included, signs a written waiver of notice, or a
consent to the holding of such meeting, or an approval of the minutes hereof.
All such waivers, consents or approvals shall be filed with the corporate
records or made a part of the minutes of the meeting.

Attendance of a person at a meeting shall constitute a waiver of notice of such
meeting, except when the person objects, at the beginning of the meeting, to the
transaction of any business because the meeting is not lawfully called or
convened, and except that attendance at a meeting is not a waiver of any right
to object to the consideration of matters required by this division to be
included in the notice but not so included, if such objection is expressly made
at the meeting.

SECTION 9.     PROXIES.  Every shareholder entitled to vote shall have the right
to do so either in person or by one or more agents authorized by a written proxy
executed by such


                                          4
<PAGE>

person or his duly authorized agent and filed with the secretary of the
corporation.  Any proxy duly executed is not revoked and continues in full force
and effect until (i) an instrument revoking it or a duly executed proxy hearing
a later date is filed with the secretary of the corporation prior to the vote
pursuant thereto, (ii) the shareholder executing the proxy attends the meeting
and votes in person, or (iii) written notice of the death or incapacity of the
maker of such proxy is received by the corporation before the vote pursuant
thereto is counted; provided that no such proxy shall be valid after the
expiration of eleven (11) months from the date of its execution, unless the
shareholder executing it specified therein the length of time for which such
proxy is to continue in force.

SECTION 10.    INSPECTORS OF ELECTION.  In advance of any meeting of
shareholders, the Board of Directors may appoint any persons other than nominees
for office as inspectors of election to act at such meeting or any adjournment
thereof.  If inspectors of election be not so appointed, the chairman of any
such meeting may, and on the request of any shareholder or his proxy shall make
such appointment at the meeting.  The number of inspectors shall be three.  In
case any person appointed as inspector fails to appear or fails or refuses to
act, the vacancy may, and on the request of any shareholder or a shareholder's
proxy shall be filled by the appointment by the Board of Directors in advance of
the meeting or at the meeting by the Chairman of the meeting.

The duties of such inspectors shall include:  determining the number of shares
outstanding and the voting power of each, the shares represented at the meeting,
the existence of a quorum, the authenticity, validity and effect of proxies;
receiving votes, ballots or consents; hearing and terminating all challenges and
questions in any way arising in connection with the right to vote; counting and
determining the results; and such acts as may be proper to conduct the election
or vote with fairness to all shareholders.  In the determination of the validity
and effect of proxies the dates contained on the forms of proxy shall
presumptively determine the order of the execution of the proxies, regardless of
the postmark dates on the inspectors of elections is prima facie evidence of the
facts stated therein.

In determining the validity of proxies and ballots, the inspectors of election
shall invalidate proxies and ballots which (i) were not solicited in accordance
with applicable provisions of law, or (ii) were given to a "person" (as defined
in Financial Code Section 700 {d}) and represent more than ten percent (10%) of
the outstanding shares of the Bank, unless the inspectors of election are
satisfied that approval pursuant to Financial Code Section 701 has been given by
the California Superintendent of Banks, or the Superintendent has issued a
written ruling that such approval is not required by reason of the fact that
"such" person would not in the exercise of such proxies or ballots be acting
within the definition of "control" or "controlling person" (as defined in
Financial Code Sections 700 and 701) or (iii) purport to vote shares held by a
"person" (as defined in Financial Code Section 700 {d}) who owns (of record or
beneficially) more than ten percent (10%) of the outstanding


                                          5
<PAGE>

shares of the Bank unless the inspectors are satisfied that the acquisition of
such shares by such "person" was made after an approval of the Superintendent
pursuant to Financial Code 701 was issued or a ruling from the Superintendent
that such approval was not required was issued.

SECTION 11.    NOMINATION OF DIRECTORS.  Nomination for election for members of
the Board of Directors may by made by the Board of Directors or by any
shareholder of record, who is entitled to vote for the election of directors. A
nomination by a shareholder must be preceded by Notice to the Bank of the
shareholders' intention to make the nomination (other than a person named in the
notice of meeting at which such nomination is to be made), which notice shall be
made in writing and delivered or mailed to the President of the Bank no later
than the latter of: (i) the close of business twenty-one (21) days prior to any
meeting of shareholders called for the election of directors, or (ii) then ten
(10) days after the date of mailing of such notice for the meeting of
shareholders.  Such notice shall contain the following information to the extent
known to the notifying shareholder: (a) the principal occupation of each
proposed nominee; (b) the numbers of shares of the Bank held of record and
beneficially, respectively, by the notifying shareholder; (c) the name and
residence address of the notifying shareholder; (d) the numbers of  shares of
the Bank owned and beneficially, respectively, by the notifying shareholder; (e)
whether the proposed nominee has ever been convicted of, or pleaded nolo
contendere, to any criminal offense involving dishonesty or breach of trust,
filed a petition of bankruptcy, or been adjudged a bankrupt; and (f) the number
of shares that the notifying shareholder believes will be voted for the election
of each nominee.  The notice shall be signed by the notifying shareholder and
accompanied by the written consent of the proposed nominee.

Nomination not made in accordance with this section shall be disregarded by the
Chairman of the meeting, and upon his instructions, the inspectors of election
shall disregard all votes cast for each such nominee.  The restrictions set
forth in this section shall not apply to the nomination of any person to replace
a proposed nominee who has died or otherwise become incapacitated to serve as a
director between the last day for giving notice thereunder and the date of
election of directors, if the procedure called for in this section was followed
with respect to the nomination of the proposed nominee.

The text, or a summary, of the foregoing provisions of this section shall be set
forth in either the notice to shareholders of any meeting at which directors are
to be elected, or any proxy or information statement distributed by the Board of
Directors with respect to such meeting.


                                          6
<PAGE>

                                     ARTICLE III

                                      DIRECTORS


SECTION 1.     POWERS.  Subject to limitations of the Articles of Incorporation
and of the California General Corporation Law, the California Baking Law, or the
regulations promulgated thereunder, as to action to be authorized or approved by
the shareholders, all corporate powers shall be exercised by or under the
authority of, and the business affairs of the corporation shall be controlled
by, the Board of Directors.  Without prejudice to such general powers, but
subject to the same limitations, it is hereby expressly declared that the
directors shall have the following powers:

     First - To select and remove any or all the officers, agents, and employees
of the corporation, prescribe such powers and duties for them as may not be
inconsistent with law, with the Articles of Incorporation or these By-Laws, and
fix their compensation.

     Second - To conduct, manage, and control the affairs and business of the
corporation, and to make such rules and regulations therefore not inconsistent
with law, or with the Articles of Incorporation or these By-Laws, as they may
deem best.

     Third - To change the principal executive office for the transaction of the
business of the corporation from one location to another as provided in Article
I, Section 1, hereof; to fix and locate from time to time one or more Branch
offices of the corporation within the State of California, as provided in
Article I, Section 2, hereof; to designate any place within the State of
California for the holding of any shareholders' meeting or meetings; and to
adopt, make, and use a corporate seal, and to prescribe the forms of
certificates of stock, and to alter the form of such seal and of such
certificates from time to time as in their judgment they may deem best, provided
such seal and such certificates shall at all times comply with the provisions of
law.

     Fourth - To authorize the issuance of shares of stock of the corporation
from time to time, upon such terms as may be lawful.

     Fifth - To borrow money and incur indebtedness for the purpose of the
corporation, and to cause to be executed and delivered thereof, in the corporate
name, promissory notes, bonds, debentures, deeds of trust, mortgages, pledges,
hypothecation, or other evidences of debt and securities therefore, to the
extent permitted by the law.

     Sixth - By resolution adopted by a majority of the authorized number of
directors, to designate an executive and other committees, each consisting of
two or more directors, to serve at the pleasure of the Board, and to prescribe
the manner of proceedings of any such committee, meetings of such committee may
be regularly scheduled in advance and


                                          7
<PAGE>

may be called at any time by any two members thereof; otherwise, the provisions
of these By-Laws with respect to notice and conduct of meetings of the Board
shall govern.  Subject to the limitations set forth in Sections 18 of this
Article any such committee shall have such authority as may be granted by
resolution of the Board.

SECTION 2.     NUMBER AND QUALIFICATIONS OF DIRECTORS.  The authorized number of
directors of this corporation shall be not less than six (6) or more than eleven
(11).  The exact number of directors of this corporation shall be eight (8)
until changed by a duly adopted resolution of the Board of Directors, or by an
amendment to this By-Law, duly adopted by the shareholders or by the Board of
Directors as authorized by Section 212 (a) of the California General Corporation
Law.  A certified copy of such resolution or amendment shall be inserted in the
minute book of the corporation immediately following these By-Laws.

SECTION 3.     ELECTION AND TERM OF OFFICE.  The directors shall be elected at
each annual meeting of shareholders but, if any such annual meeting is not held
or the directors are not elected thereat, the directors may be elected at any
special meeting of shareholders held for that purpose.  All directors shall hold
office until their respective successors are elected, subject to the California
General Corporation Law, the California Banking Law, and the provisions of these
By-Laws with respect to vacancies on the Board.

SECTION 4.     VACANCIES.  A vacancy in the Board of Directors shall be deemed
to exist in the case of the death, resignation or removal of any director, if a
director has been declared of unsound mind by order of court, or convicted of a
felony, if the authorized number of directors be increased, or if the
shareholders fail, at any annual or special meeting of shareholders at which any
directors or directors are elected, to elect the full authorized number of
directors to be voted at that meeting.

Vacancies in the Board of Directors, except for a vacancy created by the removal
of a Director, may be filled by a majority of the remaining directors, though
less than a quorum or by a sole remaining director, and each director so elected
shall hold office until his successor is elected at an annual or a special
meeting of the shareholders.  A vacancy in the Board of Directors created by the
removal of a director may only be filled by the vote of a majority of the shares
entitled to vote represented at a duly held meeting at which a quorum is
present, or by the written consent of the holders of all of the outstanding
shares.

The shareholders may elect a director or directors at any time to fill any
vacancy or vacancies not filled by the directors.  Any such election by written
consent, except to fill a vacancy created by removal, shall require the consent
of holders of a majority of the outstanding shares entitled to vote.

Any director may resign effective upon giving written notice to the Chairman of
the Board, the President, or the Secretary of the Board of Directors of the
corporation, unless the


                                          8
<PAGE>

notice specifies a later time for the effectiveness of such resignation.  If the
Board of Directors accept the resignation of a director tendered to take effect
at a future time, the Board or the shareholders shall have the power to elect a
successor to take office when the resignation is to become effective.

No reduction of the authorized number of directors shall have the effect of
removing any directors prior to the expiration of his term of office.

SECTION 5.     PLACE OF MEETING.  Regular meetings of the Board of Directors
shall be held at any place within the State which has been designated from time
to time by resolution of the Board or by written consent of all members of the
Board.  In the absence of such designation, regular meetings shall be held at
the principal executive office of the corporation.  Special meetings of the
Board may be held either at a place so designated or at the principal executive
office.

SECTION 6.     ORGANIZATION MEETING.  Following each annual meeting of
shareholders, at or prior to the next regular or special meeting of the Board of
Directors or Committee thereof, the Board of Directors shall hold a meeting at
the place of said meeting or at such other place as shall be fixed by the Board
of Directors, for the purpose of organization, election of corporate officers,
and the transaction of other business.  Call and notice of such meeting meetings
are hereby dispensed with.

SECTION 7.     REGULAR MEETINGS.  Regular meetings of the Board of Directors may
be held without notice at such time and at such place as shall from time to time
be determined by resolution of the Board.

SECTION 8.     SPECIAL MEETINGS.  Special meetings of the Board of Directors for
any purpose or purposes shall be called at any time by the Chairman of the
Board, the President, the Secretary, or by any two directors.

Written notice of the time and place of special meetings shall be delivered
personally to each director or communicated to each director by telephone, by
telegraph or mail, charges prepaid, or by facsimile addressed to him at his
address as it is shown upon the records of the corporation or, if it is not so
shown on such records or  is not readily ascertainable, at the place at which
the meetings of the directors are regularly held.  In case such notice is
mailed, it shall be deposited in the United States mail at least forty-eight
(48) hours prior to the time of the holding of the meeting.  In case such notice
is telegraphed, it shall be delivered to the telegraph company in the place at
which the principal executive office of the corporation is located at least
twenty-four (24) hours prior to the time of the holding of the meeting.  In case
such notice is delivered, personally or by telephone or facsimile, it shall be
so delivered at least twenty-four (24) hours prior to the time of the holding of
the meeting.  Such mailing, telegraphing or delivery, personally or by telephone
or facsimile, as above provided, shall be due, legal and personal notice to such
director.


                                          9
<PAGE>

SECTION 9.     ACTION WITHOUT MEETING.  Any action by the Board of Directors may
be taken without a meeting if all members of the Board shall individually or
collectively consent in writing to such action.  Such written consent or
consents shall be filed with the minutes of the proceedings of the Board and
shall have the same force and effect as a unanimous vote of such directors.

SECTION 10.    ACTION AT A MEETING:  QUORUM AND REQUIRED VOTE.  Presence of a
majority of the authorized number of directors at a meeting of the Board of
Directors constitutes a quorum for the transaction of business, except as
hereinafter provided.  Members of the Board may participate in a meeting through
use of conference telephone or similar communications equipment, so long as all
members participating in such meeting can hear one another.  Participation in a
meeting as permitted in the preceding sentence constitutes present in person at
such meeting.  Every act or decision done or made by a majority of the directors
present at a meeting duly held at which a quorum is present shall be regarded as
the act of the Board of Directors, unless a greater number is required by law,
by the Articles of Incorporation, or by these By-Laws.  A meeting at which a
quorum is initially present may continue to transact business notwithstanding
the withdrawal of a director, provided that any action taken is approved by at
least a majority of the required quorum for such meeting.

SECTION 11.    VALIDATION OF DEFECTIVELY CALLED OR NOTICED MEETINGS.  The
transactions of any meeting of the Board of Directors, however called and
noticed or wherever held, shall be as valid as though had at a meeting duly held
after regular call and notice, if a quorum is present and if, either before or
after the meeting, each of the directors not present or who, though present, has
prior to the meeting or at its commencement, protested the lack of proper notice
to him, signs a written waiver of notice or a consent to holding such meeting,
or an approval of the minutes thereof.  All such waivers, consents or approvals
shall be filed with corporate records or made a part of the minutes of the
meeting.

SECTION 12.    ADJOURNMENT.  A quorum of the directors may adjourn any
directors' meeting to meet again at a stated day and hour; provided, however,
that in the absence of a quorum a majority of the directors present at any
directors meeting, either regular or special, may adjourn from time to time
until the time fixed for the next regular meeting of the Board.

SECTION 13.    NOTICE OF ADJOURNMENT.  If the meeting is adjourned for more than
twenty-four (24) hours, notice of the adjournment to another time or place shall
be given prior to the time of the adjourned meeting to the directors who were
not present at the time of adjournment.  Otherwise notice of the time and place
of holding an adjourned meeting need not be given to absent directors if the
time and place be fixed at the meeting adjourned.


                                          10
<PAGE>

SECTION 14.    FEES AND COMPENSATION.  Directors shall not receive any stated
salary for their services as directors, but by resolution duly adopted by the
Board a fixed fee and expenses of attendance may be allowed for attendance at
meetings of the Board and/or any of its committees.

SECTION 15.    INDEMNIFICATION OF DIRECTORS, OFFICERS, EMPLOYEES, AND OTHER
AGENTS.

     (a)  MANDATORY INDEMNIFICATION OF DIRECTORS.  The corporation shall, to the
maximum extent and in the manner permitted by the California Corporations Code
("the Code"), indemnify each of its directors against expenses (as defined in
Section 317 (a) of the Code), judgments, fines, settlements, and other amounts
actually and reasonably incurred in connection with any proceedings (as defined
in Section 317(a) of the Code), arising by reason of the fact that such person
is or was an agent of the corporation.  For purposes of this Section 15, a
"director" of the corporation includes any person (i) who is or was a director
of the corporation, (ii) who is or was serving at the request of the corporation
as a director of another corporation, partnership, joint venture, trust or other
enterprise, or (iii) who was a director of a corporation which was a predecessor
corporation of the corporation or of another enterprise at the request of such
predecessor corporation.

     (b) PERMISSIVE INDEMNIFICATION.  The corporation shall have the power, to
the extent and in the manner permitted by the Code, to indemnify each of its
officers, employees and agents against expenses  (as defined in Section 317(a)
of the Code), judgments, fines, settlements, and other amounts actually and
reasonably incurred in connection with any proceeding  (as defined in Section
317(a) of the Code), arising by reason of the fact that such person is or was an
agent of the corporation.  For purposes of this Section 15, an "employee" or
"agent" of the corporation (other than a director) includes any person (i) who
is or was an employee or agent of the corporation, (ii) who is or was serving at
the request of the corporation as an employee or agent of another corporation,
partnership, joint venture, trust or other enterprise, or (iii) who was an
employee or agent of the corporation which was a predecessor corporation of the
corporation or of another enterprise at the request of such predecessor
corporation.

     (c)  PAYMENT OF EXPENSES IF ADVANCE.  Expenses incurred in defending any
civil or criminal action or proceeding for which indemnification is required
pursuant to sub-section (a) or for which indemnification is permitted pursuant
to sub-section (b) following authorization thereof by the Board of Directors, in
the case of directors shall and in the case of other agents of the corporation
entitled to indemnification may, be paid by the corporation in advance of the
final disposition of such action or proceeding upon receipt of an undertaking by
or on behalf of the indemnified party to repay such  amount if it shall


                                          11
<PAGE>

ultimately be determined that the indemnified party is not entitled be
indemnified as authorized in this Section 15.

     (d)  INDEMNITY NOT EXCLUSIVE.  The indemnification provided by this Section
15 shall not be deemed exclusive of any other rights to which those seeking
indemnification may be entitled under any By-Law, agreement, vote of
shareholders or disinterested directors or otherwise, both as to action in an
official capacity and as to action in another capacity while holding such
office, to the extent that such additional rights to indemnification are
authorized in the Articles of Incorporation.

     (e)  INSURANCE INDEMNIFICATION.  The corporation shall have the power to
purchase and maintain insurance on behalf of any person who is or was an agent
of the corporation against any liability asserted against or incurred by such
person in such capacity or arising out of such person's status as such, whether
or not the corporation would have the power to indemnify him against such
liability under the provisions of this Section 15.

     (f)  CONFLICTS.  No indemnification or advance shall be made under this
Section 15, except where such indemnification or advance is mandated by law or
the order, judgment or decree of any court of competent jurisdiction, in any
circumstance where it appears:

          (1)  That would be inconsistent with a provision of the Articles of
Incorporation, these By-Laws, a resolution of the shareholders or an agreement
in effect at the time of the occurrence of the alleged cause of the action
asserted in the proceeding in which the expenses were incurred or other amounts
were paid, which prohibits otherwise limits indemnifications; or

          (2)  That it would be inconsistent with any condition expressly
imposed by a court in approving a settlement.

SECTION 16.    CHAIRMAN OF THE BOARD.  The Board of Directors shall appoint from
its members, one individual to serve as Chairman of the Board of Directors of
the corporation.  The Chairman shall preside at all meetings of the
shareholders, at which he is present, and at all meetings of the Board of
Directors, at which he is present, unless the Board of Directors designates
another of its members to preside at meetings of the Board of Directors.  The
Chairman shall also exercise and perform such other powers and duties as may be
from time to time assigned by the Board of Directors or prescribed by the
By-Laws.  The Chairman may be a member of any committee except the Audit
Committee.

The Chairman shall be appointed annually by the Board of Directors and shall
hold his position until he shall resign or shall be removed or otherwise be
disqualified to serve, or his successor shall be appointed and qualified.  The
Chairman may be removed, either with or without cause, by a majority of the
Directors then in office, at any regular or special meeting of the Board at
which there is a quorum.  The Chairman may resign at any time


                                          12
<PAGE>

by giving written notice to the Board of Directors or to the Secretary of the
corporation.  Any such resignation shall take effect at the date of the receipt
of such notice or any later time specified therein; and unless otherwise
specified therein, the acceptance of such resignation shall not be necessary to
make it effective.

SECTION 17.    VICE CHAIRMAN OF THE BOARD.  The Board of Directors may appoint
one (1) or more of its member as Vice Chairman of the Board of Directors of the
corporation.  In the absence of the Chairman, the Vice Chairman, or if there is
more than one (1) Vice Chairman, then the Vice Chairman designated by the Board
of Directors shall preside at the meetings of the shareholders, and shall
preside at all meetings of the Board of Directors, unless the Board of Directors
designates another of its members to preside at meetings of the Board of
Directors , and  shall exercise such duties as may from time to time be assigned
by the Board of Directors or these By-Laws.

SECTION 18.    COMMITTEES.  The Board of Directors may appoint an Executive
Committee, Loan Committee, Audit Committee, Investment Committee, and other
committee or committees ("committees" herein), and delegate to any such
committee any of the powers and authority of the Board in the management of the
business and affairs of the corporation, except with respect to:

     (a)  The approval of any action for which the California General
Corporation Law, California Banking Law or Articles of Incorporation also
requires shareholders' approval (as defined in Section 153 of the California
General Corporation Law), or approval of the outstanding shares (as defined in
Section 152 of the California General Corporation Law).

     (b)  The filling of vacancies on the Board or in any committee.

     (c)  The fixing of compensation of the directors for serving on the Board
or on any committee.

     (d)  The amendment or repeal of By-Laws or the adoption of new By-Laws.

     (e)  The amendment or repeal of any resolution of the Board which by its
express terms is not so amenable or repealable.

     (f)  A distribution to the shareholders of the corporation.

     (g)  The appointment of other committees of the Board or the members
thereof.

The Board of Directors shall have the power to prescribe the manner in which
proceedings of the committees are conducted.  Any director can be a member of
more than one committee.  Officers and other employees who are directors may
serve on committees other than the Audit Committee.


                                          13
<PAGE>

The Executive Committee shall be composed of three (3) or more members of the
Board, one (1) of whom shall be the Chairman of the Board.  The Chairman of the
Board shall appoint one (1) of the members of the Executive Committee to serve
as Chairman of the Executive Committee and that individual shall preside at all
meetings of the Executive Committee at which he is present.  Unless the Board of
Directors shall otherwise provide, regular meetings of the committee, notice of
which is hereby dispensed with, shall be held at the principal office of the
corporation at such times as are determined by the Board of Directors or by the
committee; or if special meetings of the committee are held, such meeting shall
be held at the principal office of the corporation or at any place which has
been designated from time to time by resolution of the committee or by written
consent of all members thereof, and may be called by the Chairman of the
Executive Committee, or any two (2) members thereof, on written notice to the
members of the committee of the time and place of such special meeting given in
the manner provided for the time and place of special meetings of the Board of
Directors; minutes shall be kept of each meeting of the committee; vacancies in
the membership of the committee may be filled by the Board of Directors; a
majority of the authorized number of members of the committee shall constitute a
quorum for the transaction of business; and transactions of any meeting of the
committee, however called and noticed or wherever held, shall be as valid as
though had a meeting duly held after regular call and notice, if a quorum be
present and if, either before or after the meeting, each of the members not
present signs a written waiver of notice or consent to holding such meeting or
an approval of the minutes thereof.  Any action required or permitted to be
taken by the committee may be taken without a meeting, if all members of the
committee shall individually or collectively consent to such action.  All such
waivers, cosents, or approvals, other than those made by the Audit Committee,
shall be filed with the corporate records or made a part of the minutes of the
meeting.  All such waivers, consents or approvals, and the minutes of any
meetings of the Audit Committee shall be separately maintained by the Chairman
of that committee, and shall be filed with the other corporate records.

Committees appointed by the Board of Directors, other than the Executive
Committee, shall be composed of such number of members of the Board as the Board
of Directors may determine, and shall conduct their business affairs in such
manner and shall meet at such time and place be subject to notice and other
restrictions as may be determined by the Board of Directors or these By-Laws.

                                     ARTICLE IV

                                      OFFICERS

SECTION 1.     OFFICERS.  The officers of the corporation shall be the
President, a Senior Executive Vice President, an Executive Vice President, a
Senior Vice President, a Vice President, an Assistant Vice President, a
Secretary, an Assistant Secretary, and a Chief


                                          14
<PAGE>

Financial Officer.  The corporation may also have, at the discretion of the
Board of Directors, a Chief Operating Officer, one or more additional Senior
Executive Vice Presidents, one or more Executive Vice Presidents, one or more
additional Senior Vice Presidents, one or more Vice Presidents, one or more
Assistant Vice Presidents, one or more additional Assistant Secretaries, one or
more Assistant Chief Financial Officers, and such other officers as may be
appointed in accordance  with the provisions of Section 3 of this Article.  Any
number of offices may be held by the same persons, except those of the President
and Secretary.

SECTION 2.     ELECTION.  The officers of the corporation, except such officers
as may be appointed in accordance with the provisions of Section 3 or Section 5
of this Article, shall be chosen annually by the Board of Directors, and each
shall hold his office until he shall resign or shall be removed or otherwise
disqualified to serve, or his successor shall be elected and qualified.

SECTION 3.     SUBORDINATE OFFICERS.  The Board of Directors may appoint such
other officers as the business of the corporation may require, each of whom
shall hold office, for such period, have such authority and perform such duties
as are provided in these By-Laws or as the Board of Directors may from time to
time determine.

SECTION 4.     REMOVAL AND RESIGNATION.  Any officer may be removed, either with
or without cause, by the Board of Directors.

Any officer may resign at any time by giving written notice to the Board of
Directors or to the President, or to the Secretary of the corporation, without
prejudice however, to the rights, if any, of the corporation under any contract
to which such officer is a party.  Any such resignation shall take effect at the
date of the receipt of such notice or at any later time specified therein; and,
unless otherwise specified therein, the acceptance of such resignation shall not
be necessary to make it effective.

SECTION 5.     VACANCIES.  A vacancy in any office because of death,
resignation, removal, disqualification or any other cause shall be filled in the
manner prescribed in the By-Laws for regular appointments to such office.

SECTION 6.     PRESIDENT.  The President shall be the Chief Executive Officer of
the Corporation and shall, subject to the control of the Board of Directors,
have general supervision, direction and control of the business and officers of
the corporation, subject to such supervisory powers, if any, as may be given by
the Board of Directors to the Chairman of the Board.  The President shall, in
the absence of the Chairman of the Board and the Vice Chairman of the Board, if
any, preside at all meetings of the shareholders and, at all meetings of the
Board of Directors.  He shall be a member of all the standing committees, except
the Audit Committee, and shall have the general powers, and duties of management
usually vested in the office of the president of a corporation, and shall have


                                          15
<PAGE>

such other powers and duties as may be prescribed by the Board of Directors or
these By-Laws.

SECTION 7.     SECRETARY.  The Secretary shall record or cause to be recorded,
and shall keep or cause to be kept, at the principal executive office and such
other place as the Board of Directors may order, a book of minutes of actions
taken at all meetings of Directors and shareholders, with the time and place of
holding, whether regular or special, and if special, how authorized, the notice
thereof given, the names of those present at Directors' meetings, the numbers of
shares presented or represented at shareholders' meetings, and the proceeding
thereof.

The Secretary shall keep, or cause to be kept, at the principal executive office
or at the office of the corporation's transfer agent, a share register, or a
duplicate share register, showing the names of the shareholders and their
addresses, the number and classes of shares held by each, the number and date of
certificates issued for the same, and the number and date of cancellation of
every certificate surrendered for cancellation.

The Secretary shall give, or cause to be given, notice of all the meetings of
the shareholders and of the Board of Directors required by these By-Laws or by
law to be given, and he shall keep the seal of the corporation in safe custody,
and shall have such other powers and perform such other duties as may be
prescribed by the Board of Directors or by these By-Laws.

SECTION 9.     CHIEF FINANCIAL OFFICER.  The Chief Financial Officer shall keep
and maintain, or cause to be kept and maintained, adequate and correct accounts
of the properties and business transactions of the corporation, including
accounts of its assets, liabilities, receipts, disbursements, gains, losses,
retained earnings, and shares.  At regular meetings of the Board of Directors or
when requested by the Chairman of the Board, by the President or the Directors,
he shall submit a statement showing the financial condition of the corporation
and such other information as the Board or such officers may require.

He shall be responsible for all the money, funds, and valuables belonging to the
corporation.  He shall have the authority, subject to the discretion of the
Board of Directors, to sign checks, drafts, certificates of deposit, and
receipts for money delivered, to endorse notes, bills, checks, drafts, and
acceptances.  He shall have such other powers and perform such other duties as
may be prescribed by the Board of Directors or by these By-Laws.  If such
officer is also a director, he may be a member of any committee except the Audit
Committee.


                                          16
<PAGE>

                                      ARTICLE V

                                    MISCELLANEOUS

SECTION 1.     RECORD DATE.  The Board of Directors shall fix a time as a record
date for the determination of the shareholders entitled to notice of and to vote
at any meeting of shareholders to entitled to give consent to corporate action
in writing without a meeting, to receive any report, to receive any dividend or
distribution, or any allotment of rights, or to exercise rights in respect to
any change, conversion, or exchange of shares.  The record date so fixed shall
be not more than sixty (60) days nor less than ten (10) days prior to the date
of any meeting, nor more than sixty (60) days prior to any other event for the
purpose of which it is fixed.  When a record date is so fixed, only shareholders
of record on that date are entitled to notice of and to vote at any such
meeting, to give consent without a meeting, to receive any report, to receive a
dividend, distribution, or allotment of rights, or to exercise the rights, as
the case may be, notwithstanding any transfers of any shares on the books of the
corporation after the record date, except as otherwise provided in the Articles
of Incorporation or these By-Laws.

SECTION 2.     INSPECTION OF CORPORATE RECORDS.  The accounting books and
records, and minutes of the proceedings of the shareholders and the Board and
committees of the Board of this corporation and any subsidiary of this
corporation shall be open to inspection upon the written demand on the
corporation of any shareholder or holder of a voting trust certificate at any
reasonable time during usual business hours, for a purpose reasonably related to
such holder's interests as a shareholder or as the holder of such voting trust
certificate.  Such inspection by a shareholder or holder of a voting trust
certificate may be made in person or by an agent or attorney, and the right of
inspection includes the right to copy and make extracts, at the expense of the
person copying and making extracts.

A shareholder or shareholders holding at least five percent (5%) in the
aggregate of the outstanding voting shares of the corporation or who hold at
least one percent (1%) of such voting shares and have filed a Form F-11 with the
Federal Deposit Insurance Corporation relating to the election of directors of
the corporation shall have (in person or by agent or attorney) the right to
inspect and copy the record of shareholders' names and addresses and
shareholdings during usual business hours upon five (5) business days prior
written demand upon the corporation and to obtain from the transfer agent for
the corporation, upon written demand and upon the tender of its usual charges, a
list of the shareholders' names and addresses who are entitled to vote for the
election of directors, and their shareholdings, as of the most recent record
date for which it has been complied or as of a date specified by the shareholder
subsequent to the date of demand.  The list shall be made available on or before
the later of five (5) business days after the demand is received or the date
specified therein as the date as of which the list is to be complied.
Every director shall have the absolute right, at any reasonable time, to inspect
and copy all books, records, and documents of every kind and to inspect the
physical properties of the


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<PAGE>

corporation.  Such inspection by a director may be made in person or by agent or
attorney, and the right of inspection includes the right to copy and make
extracts at the expense of the person copying or making extracts.

SECTION 3.     CHECKS AND OTHER EVIDENCES OF INDEBTEDNESS.  All checks, drafts
or other orders for payment of money, notes or other evidences of indebtedness,
issued in the name of or payable to the corporation, shall be signed or endorsed
by such person or persons and in such manner as, from time to time, shall be
determined by resolution of the Board of Directors.

SECTION 4.     ANNUAL AND OTHER REPORTS.  The Board of Directors of the
corporation shall cause an annual report to be sent to the shareholders not
later than one hundred twenty (120) days after the close of the fiscal or
calendar year.  Such report  shall contain a balance sheet as of the end of such
fiscal year and an income statement and statement of changes in financial
position for such fiscal year, accompanied by any report thereon of independent
accountants or, if there is not such report, the certificate of an authorized
officer of the corporation stating that such statements were prepared without
audit from the books and records of the corporation.

A shareholder or shareholders holding at least five percent (5%) of the
outstanding shares of any class of the corporation may make a written request to
the corporation for an income statement of the corporation for the three-month,
six-month or nine-month period of the current fiscal year ended more than thirty
(30) days prior to the date of the request and a balance sheet of the
corporation as of the end of such period and, in addition, if no annual report
for the last fiscal year has been sent to shareholders, the annual report for
the last fiscal year.  The corporation shall deliver the statement to the person
making the request within thirty (30) days thereafter.  A copy of any such
statement shall be kept on file in the principal executive office of the
corporation for twelve (12) months and they shall be exhibited at all reasonable
times to any shareholder demanding an examination of them or a copy shall be
mailed to such shareholders.

The corporation shall, upon the written request of any shareholder, mail to the
shareholder a copy of the last annual, semi-annual or quarterly income statement
which it has prepared and a balance as of the end of the period.  The quarterly
income statements and balance sheets referred to in this situation shall be
accompanied by the report thereof, if any, of any independent accountants
engaged by the corporation or the certificate of an authorized officer of the
corporation that such financial statement were prepared without audit from the
books and records of the corporation.

SECTION 5.     EXECUTION OF CONTRACTS AND OTHER INSTRUMENTS.  No officer may
enter into any contract or execute any instrument in the name of and on behalf
of the corporation, other than in the ordinary course of the business of the
corporation, except as may be specifically authorized by the Board of Directors.


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<PAGE>

SECTION 6.     CERTIFICATE OF SHARES.  Every holder of shares in the corporation
shall be entitled to have a certificate signed in the name of the corporation by
the President, Executive Vice President, Senior Vice President, or a Vice
President and by the Chief Financial Officer, Cashier, Assistant Cashier, the
Secretary or any Assistant Secretary, certifying the number of shares and the
class or series of shares owned by the shareholder.  Any of the signatures on
the certificate may be facsimile.  In case any officer, transfer agent or
registrar who has signed or whose facsimile signature has been placed upon a
certificate, shall have ceased to be such officer, transfer agent or registrar
before such certificate is issued, it may be issued by the corporation with the
same effect as if such person were an officer, transfer agent or registrar at
the date of issue.

Any such certificate shall also contain such statement as may be required by
Section 418 of the California General Corporation Law, the California Corporate
Securities Law of 1968, and any agreement between the corporation and the issue
thereof.

No new certificate for shares shall be issued in lieu of an old certificate
unless the latter is surrendered and canceled at the same time; provided,
however, that a new certificate will be issued without the surrender and
cancellation of the old certificate if (1) the old certificate is lost,
apparently destroyed or wrongfully taken; (2) if the request for the issuance of
the new  certificate is made within a reasonable time after the owner of the old
certificate has notice of its loss, destruction, or theft; (3) the request for
the issuance of a new certificate is made prior to the receipt of notice by the
corporation that the old certificate has been acquired by a bona fide purchaser;
(4) the owner of the old certificate files an indemnity agreement, or in the
discretion of any officer entitled to sign the certificate, provides other
adequate security to the corporation sufficient to indemnify it against any
claim that may be made against it (including any liability or expenses, legal
and otherwise); and (5) the owner satisfies any other reasonable requirements
imposed by the corporation.  In the event of the issuance of a new certificate,
the rights and liabilities of the corporation, and of the holder of the old and
new certificates, shall be governed by the provisions of Section 8104 and 8405
of the California Commercial Code.

SECTION 7.     REPRESENTATION OF SHARES OF OTHER CORPORATIONS.  The President,
Executive Vice President, Senior Vice President, or any Vice President or the
Secretary of this corporation are authorized to vote, represent and exercise on
behalf of this corporation all rights incident to any and all shares of any
other corporation or corporations standing in the name of this corporation.  The
authority herein granted to said officers to vote or represent on behalf of this
corporation any an all shares held by this corporation in any other corporation
or corporations may be exercised either by such officers in person or by any
other persons authorized to do so by proxy or power of attorney duly executed by
said officers.


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<PAGE>

SECTION 8.     INSPECTION OF BY-LAWS.  The corporation shall keep at its
principal executive office in California, the original, or a copy of the By-Laws
as amended or otherwise altered to date, certified by the Secretary, which shall
be open to inspection by the shareholders at all reasonable times during office
hours.

SECTION 9.     CONSTRUCTION AND DEFINITIONS.  Unless the context otherwise
requires, the general provisions, rules of construction and definitions
contained in the California General Corporation Law shall govern the
construction of these By-Laws.  Without limiting the generality of the
foregoing, the masculine gender includes the feminine and neuter, the singular
includes the plural and the corporation, partnership, trust, estate,
association, club, or syndicate, as well as a natural person.

SECTION 10.    FORM OF MINUTES, BOOKS, AND RECORDS.  Minutes shall be kept in
written form.  Other books and records may be kept either in written form or in
any other form capable of being converted into written form so long as such form
is not in contrary to any applicable law.


                                      ARTICLE VI

                                       DEPOSITS

SECTION 1.     DEPOSITS BY SHAREHOLDERS.  All deposits made by shareholders
shall be entitled to the same rights, privileges, and benefits as those of other
depositors.

SECTION 2.     CONDITIONS OF DEPOSITS.  All deposits received by the corporation
shall be made by the depositor and accepted by the corporation upon the
understanding and agreement that such deposits are received and will be paid by
the corporation in accordance with its By-Laws, rules and regulations, and all
applicable laws and regulations in force at the time of repayment and shall be
payable only at the place of business of the corporation at which the account of
the depositor is carried and in lawful money of the United States of America.
Notice in writing of at least thirty (30) days, at the option of the
corporation, may be required to be given of intention to withdraw any savings
deposit or any part thereof.

                                    ARTICLE VII

                                     AMENDMENTS

SECTION 1.     POWER OF SHAREHOLDERS.  New By-Laws may be adopted, or these
By-Laws may be amended or repealed by the vote of shareholders entitled to
exercise a majority of the voting power of the corporation or by the written
assent of such shareholders, except as otherwise provided by law or by the
Articles of Incorporation.


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<PAGE>

SECTION 2.     POWER OF DIRECTORS.  Subject to the right of shareholders as
provided in Section 1 of this Article VII to adopt, amend or repeal By-Laws, the
Board of Directors may adopt, amend or repeal these By-Laws; provided, however,
that the Board of Directors may not adopt, amend, or repeal these By-Laws if the
effect of such action would change the maximum or minimum number of directors.
A resolution changing the exact number of directors within the authorized range
adopted pursuant to the procedure set forth in Section 2 of Article III is not
an amendment to these By-Laws within the meaning of this Article VII; and the
full Board of Directors is expressly authorized to adopt resolutions changing
the exact number of directors within the range fixed in Section 2 of Article
III.

SECTION 3.     PROCEDURE.  The Secretary or Assistant Secretary of the
corporation shall, within three (3) business days following the receipt of
written notice of the adoption of new By-Laws or modification or repeal of an
existing By-Law, pursuant to the provisions of Section 1 or Section 2 of this
Article, prepare and file with the Superintendent a certified copy thereof as
required by Section 601 of the California Banking Law.  Thereafter, the
Secretary or Assistant Secretary shall file the Superintendent's approval of
such amendment with the records of the corporation immediately upon his receipt
thereof.

If an amendment is disapproved, the Secretary or Assistant Secretary shall,
within three (3) business days following the receipt thereof, deliver to the
shareholders or the directors, whichever have adopted the amendment, a copy of
the notice disapproving the amendment together with a copy of any explanatory
correspondence received therewith.

SECTION 4.     EFFECTIVE DATE.  An amendment to these By-Laws shall become
effective on and as of the date such amendment has been approved and filed by
the Superintendent.

                                    ARTICLE VIII

                            PARLIAMENTARY RULES OF ORDER

SECTION 1.     RULES OF ORDER.  The conduct of business affairs at meetings of
the Board of Directors, the Executive Committee and other committees authorized
by these By-Laws, shall be governed by the most recent edition of ROBERT'S RULES
OF ORDER, as revised from time to time, provided that such rules may be
temporarily suspended from time to time upon a majority vote of those in
attendance at such meeting.  The conduct of the business affairs at
shareholders' meetings shall be conducted in a fair and reasonable manner.

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