US BANCORP \DE\
424B2, 1998-03-31
NATIONAL COMMERCIAL BANKS
Previous: FIRST AMERICAN FINANCIAL CORP, 8-K, 1998-03-31
Next: FIRST FINANCIAL CORP /TX/, NT 10-K, 1998-03-31



<PAGE>
PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED FEBRUARY 17, 1998)
 
            [LOGO]
                        14,000,000 PREFERRED SECURITIES
                                 USB CAPITAL II
 
         7.20% TRUST ORIGINATED PREFERRED SECURITIES(SM) ("TOPRS(SM)")
                (LIQUIDATION AMOUNT $25 PER PREFERRED SECURITY)
         FULLY AND UNCONDITIONALLY GUARANTEED, AS DESCRIBED HEREIN, BY
                                  U.S. BANCORP
                                  ------------
 
    The 7.20% Trust Originated Preferred Securities (the "Preferred Securities")
offered hereby represent beneficial ownership interests in the assets of USB
Capital II, a statutory business trust formed under the laws of the State of
Delaware (the "Issuer" or the "Trust"). U.S. Bancorp, a Delaware corporation (
"USB" or the "Company"), will be the owner of all of the common securities of
the Issuer (the "Common Securities" and, collectively with the Preferred
Securities, the "Trust Securities"). The Issuer exists for the sole purpose of
issuing the Trust Securities and investing the proceeds thereof in the 7.20%
Junior Subordinated Deferrable Interest Debentures (the "Junior Subordinated
Debentures") issued by USB. The Junior Subordinated Debentures will mature on
April 1, 2028, or such date to which the maturity of the Junior Subordinated
Debentures may be extended as described under "Certain Terms of Junior
Subordinated Debentures--General" and "Risk Factors--Extension of Stated
Maturity of the Junior Subordinated Debentures" (such date, the "Stated
Maturity"), in each case subject to satisfying certain conditions.
                                                        (CONTINUED ON NEXT PAGE)
                            ------------------------
 
    SEE "RISK FACTORS" COMMENCING ON PAGE S-10 HEREIN FOR A DISCUSSION OF
CERTAIN FACTORS THAT SHOULD BE CONSIDERED BY PROSPECTIVE INVESTORS.
THESE SECURITIES ARE NOT SAVINGS ACCOUNTS OR DEPOSITS OR OTHER OBLIGATIONS OF A
      BANK AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE
           CORPORATION, BY ANY OTHER GOVERNMENTAL AGENCY,
                                 OR OTHERWISE.
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
   ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS TO
      WHICH IT RELATES. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
                                    OFFENSE.
 
<TABLE>
<CAPTION>
                                                                                       UNDERWRITING          PROCEEDS TO
                                                               PRICE TO PUBLIC(1)     COMMISSIONS(2)      THE ISSUER(3)(4)
<S>                                                            <C>                  <C>                  <C>
Per Preferred Security.......................................        $25.00                 (3)                $25.00
Total (5)....................................................     $350,000,000              (3)             $350,000,000
</TABLE>
 
(1) Plus accrued distributions, if any, from April 1, 1998.
 
(2) USB and the Issuer have agreed to indemnify the Underwriters against certain
    liabilities, including liabilities under the Securities Act of 1933, as
    amended (the "Securities Act"). See "Underwriting."
 
(3) In view of the fact that all of the proceeds of the sale of the Preferred
    Securities will be used to purchase the Junior Subordinated Debentures, USB
    has agreed to pay the Underwriters as compensation for arranging the
    investment therein of such proceeds, $.7875 per Preferred Security, or
    $11,025,000 in the aggregate. See "Underwriting."
 
(4) Before deducting offering expenses payable by USB estimated at $400,000.
 
(5) USB and the Issuer have conditionally granted the Underwriters a 30-day
    option to purchase up to 2,100,000 additional Preferred Securities solely to
    cover over-allotments. If such option is exercised in full, the total Price
    to Public and Proceeds to the Issuer will be, in each case, $402,500,000.
    See "Underwriting."
                            ------------------------
 
    This Prospectus Supplement may be used by direct or indirect wholly owned
subsidiaries of USB, including Piper Jaffray Inc., in connection with offers and
sales related to secondary market transactions in the Preferred Securities.
Piper Jaffray Inc. may act as principal or agent in such transactions. Such
sales will be made at prices related to prevailing market prices at the time of
sale. The Preferred Securities offered hereby are being offered pursuant to Rule
2810 of the National Association of Securities Dealers Conduct Rules.
 
    The Preferred Securities offered hereby are offered severally by the
Underwriters, as specified herein, subject to receipt and acceptance by them and
subject to their right to reject any order in whole or in part. It is expected
that the Preferred Securities will be ready for delivery in book-entry form only
through the facilities of The Depository Trust Company in New York, New York, on
or about April 1, 1998, against payment therefor in immediately available funds.
                            ------------------------
 
MERRILL LYNCH & CO.
          PIPER JAFFRAY INC.
                     DAIN RAUSCHER INCORPORATED
                                MORGAN STANLEY DEAN WITTER
                                           PRUDENTIAL SECURITIES INCORPORATED
                                                      SALOMON SMITH BARNEY
                            ------------------------
 
           THE DATE OF THIS PROSPECTUS SUPPLEMENT IS MARCH 25, 1998.
 
(SM) "TRUST ORIGINATED PREFERRED SECURITIES" AND "TOPRS" ARE SERVICE MARKS OF
MERRILL LYNCH & CO.
<PAGE>
    The Preferred Securities will have a preference under certain circumstances
with respect to cash distributions and amounts payable on liquidation,
redemption or otherwise over the Common Securities, which will be held by USB.
See "Description of Capital Securities--Subordination of Common Securities" in
the accompanying Prospectus. The Common Securities, like the Preferred
Securities, will have a Liquidation Amount (as defined herein) of $25 per Common
Security, and the Company will acquire Common Securities in an aggregate
Liquidation Amount of $10,825,000 which is equal to 3.0% of the total capital of
the Issuer.
 
    Holders of the Preferred Securities will be entitled to receive preferential
cumulative cash distributions accruing from the date of original issuance and
payable quarterly in arrears on the first day of January, April, July and
October of each year (subject to possible deferral as described below),
commencing July 1, 1998, at the annual rate of 7.20% of the Liquidation Amount
of $25 per Preferred Security ("Distributions"). The amount of each Distribution
due with respect to the Preferred Securities will include amounts accrued to,
but excluding, the date the Distribution payment is due. See "Certain Terms of
Capital Securities--Distributions." Subject to certain exceptions, described
herein, USB will have the right to defer payments of interest on the Junior
Subordinated Debentures at any time or from time to time for a period not
exceeding 20 consecutive quarterly periods with respect to each deferral period
(each, an "Extension Period"), provided that no Extension Period may extend
beyond the Stated Maturity of the Junior Subordinated Debentures. Upon the
termination of any such Extension Period and the payment of all amounts then
due, USB may elect to begin a new Extension Period subject to the requirements
set forth herein. If interest payments on the Junior Subordinated Debentures are
so deferred, Distributions on the Preferred Securities will also be deferred and
USB will not be permitted, subject to certain exceptions described herein, to
declare or pay any cash distributions with respect to USB's capital stock or to
make any payment with respect to its debt securities that rank PARI PASSU with
or junior to the Junior Subordinated Debentures. During an Extension Period,
interest on the Junior Subordinated Debentures will continue to accrue (and the
amount of Distributions to which holders of the Preferred Securities are
entitled will accumulate) at the rate of 7.20% per annum, compounded quarterly
from the relevant payment date of such interest, and holders of the Preferred
Securities will be required to accrue income and will be required to pay United
States federal income tax on that income. See "Certain Terms of Junior
Subordinated Debentures--Option to Defer Interest Payment Period" and "Certain
Federal Income Tax Consequences--Interest Income and Original Issue Discount."
 
    USB has, through the Guarantee Agreement, the Trust Agreement, the Junior
Subordinated Debentures, the Indenture and the Expense Agreement (each as
defined herein), taken together, fully, irrevocably and unconditionally
guaranteed all of the Issuer's obligations under the Preferred Securities. See
"Relationship Among the Preferred Securities, the Junior Subordinated Debentures
and the Guarantee-- Full and Unconditional Guarantee" in the accompanying
Prospectus. Under the Guarantee Agreement, USB guarantees the payment of
Distributions by the Issuer and payments on liquidation or redemption of the
Preferred Securities (subordinate to the right to payment of Senior Debt of USB,
as defined herein), but only in each case to the extent of funds held by the
Issuer ("the Guarantee"). The Guarantee does not cover payment of Distributions
when the Issuer does not have sufficient funds to pay such Distributions. See
"Description of Guarantees" in the accompanying Prospectus. If USB does not make
required payments on the Junior Subordinated Debentures held by the Issuer, the
Issuer will have insufficient funds to pay Distributions on the Preferred
Securities. In such event, a holder of the Preferred Securities may institute a
legal proceeding directly against USB pursuant to the terms of the Indenture to
enforce payment of such holder's PRO RATA share of such Distributions to such
holder. See "Description of Junior Subordinated Debentures--Enforcement of
Certain Rights by Holders of Capital Securities," "--Debenture Events of
Default" and "Description of Guarantees" in the accompanying Prospectus. The
obligations of USB under the Guarantee, the Junior Subordinated Debentures and
other documents described herein are unsecured and rank subordinate and junior
in right of payment to all existing and future Senior Debt (as defined in
"Description of Junior Subordinated Debentures--Subordination" in the
accompanying Prospectus) of USB.
 
                                      S-2
<PAGE>
    As of December 31, 1997, USB had approximately $10.2 billion aggregate
principal amount of Senior Debt outstanding. The terms of the Junior
Subordinated Debentures place no limitation on the amount of Senior Debt that
USB can issue. See "Risk Factors--Ranking of USB's Obligations Under the Junior
Subordinated Debentures and the Guarantee."
 
    The Preferred Securities are subject to mandatory redemption, in whole or in
part, as the case may be, upon repayment of the Junior Subordinated Debentures
at their Stated Maturity or their earlier redemption, in each case at a
redemption price equal to the aggregate principal amount of the Preferred
Securities plus any accumulated and unpaid Distributions thereon to the date of
redemption. Subject to Federal Reserve approval, if then required under
applicable capital guidelines or policies of the Federal Reserve, the Junior
Subordinated Debentures are redeemable prior to their Stated Maturity at the
option of USB, (i) on or after April 1, 2003, in whole at any time or in part
from time to time, or (ii) at any time, in whole (but not in part), within 90
days following the occurrence and during the continuance of a Tax Event, an
Investment Company Event or a Capital Treatment Event (each as defined herein),
in each case at a redemption price equal to 100% of the principal amount of the
Junior Subordinated Debentures so redeemed, together with any accrued and unpaid
interest thereon to the date fixed for redemption. See "Certain Terms of Junior
Subordinated Debentures--Conditional Right to Redeem upon a Tax Event,
Investment Company Event or a Capital Treatment Event," "--Redemption" and
Certain Terms of Preferred Securities--Redemption."
 
    The Preferred Securities have been approved for listing on the New York
Stock Exchange, subject to official notice of issuance. If the Junior
Subordinated Debentures are distributed to the holders of the Preferred
Securities in exchange therefor upon the liquidation of the Issuer, USB will use
its best efforts to list the Junior Subordinated Debentures on the New York
Stock Exchange or such other stock exchanges or automated quotation systems, if
any, on which the Preferred Securities are then listed or traded.
 
    USB has the right at any time to terminate the Issuer and, after
satisfaction of liabilities to creditors of the Issuer as required by applicable
law, cause a Like Amount (as defined herein) of the Junior Subordinated
Debentures to be distributed to the holders of Preferred Securities in
liquidation of the Issuer, subject to USB having received prior approval of the
Federal Reserve if then required under applicable capital guidelines or policies
of the Federal Reserve. See "Certain Terms of Preferred Securities--Liquidation
of the Issuer and Distribution of Junior Subordinated Debentures to Holders."
 
    In the event of the termination of the Issuer, after satisfaction of
liabilities to creditors of the Issuer as required by applicable law, the
holders of Preferred Securities will be entitled to receive a liquidation amount
of $25 per Preferred Security ("Liquidation Amount"), plus accumulated and
unpaid Distributions thereon to the date of payment, which may be in the form of
a distribution of a Like Amount of Junior Subordinated Debentures, subject to
certain exceptions. See "Description of the Capital Securities-- Liquidation
Distribution Upon Termination" in the accompanying Prospectus.
 
    The Preferred Securities will be represented by one or more global
certificates registered in the name of The Depository Trust Company ("DTC") or
its nominee. Beneficial interests in the Preferred Securities will be shown on,
and transfers thereof will be effected only through, records maintained by
participants in DTC. Except as described herein and in the accompanying
prospectus, Preferred Securities in certificated form will not be issued in
exchange for global certificates. See "Certain Terms of Preferred Securities--
Registration of the Preferred Securities" herein and "Book-Entry Issuance" in
the accompanying Prospectus.
 
    AS USED HEREIN, (I) THE "INDENTURE" MEANS THE JUNIOR SUBORDINATED INDENTURE
DATED AS OF NOVEMBER 15, 1996, BETWEEN USB AND WILMINGTON TRUST COMPANY, AS
TRUSTEE (THE "INDENTURE TRUSTEE"), UNDER WHICH THE JUNIOR SUBORDINATED
DEBENTURES WILL BE ISSUED; (II) THE TRUST AGREEMENT" MEANS THE AMENDED AND
RESTATED TRUST AGREEMENT DATED APRIL 1, 1998 EACH RELATING TO THE ISSUER AMONG
USB, AS DEPOSITOR, WILMINGTON TRUST COMPANY, AS PROPERTY TRUSTEE (THE "PROPERTY
TRUSTEE"), WILMINGTON TRUST COMPANY, AS DELAWARE TRUSTEE (THE "DELAWARE
TRUSTEE") AND THE ADMINISTRATIVE TRUSTEES NAMED THEREIN (COLLECTIVELY, WITH THE
PROPERTY TRUSTEE AND
 
                                      S-3
<PAGE>
DELAWARE TRUSTEE, THE ISSUER TRUSTEES" OR INDIVIDUALLY, A "TRUSTEE"); (III) THE
"GUARANTEE AGREEMENT" MEANS THE GUARANTEE AGREEMENT DATED APRIL 1, 1998 RELATING
TO THE GUARANTEE (AS DEFINED HEREIN) BETWEEN USB AND WILMINGTON TRUST COMPANY,
AS GUARANTEE TRUSTEE; AND (IV) THE "EXPENSE AGREEMENT" MEANS THE EXPENSE
AGREEMENT DATED APRIL 1, 1998 BETWEEN USB AND THE ISSUER. THE TRUST AGREEMENT
PROVIDES THAT EACH HOLDER OF PREFERRED SECURITIES BY ACCEPTANCE THEREOF AGREES
TO THE PROVISIONS OF THE TRUST AGREEMENT, THE GUARANTEE AGREEMENT AND THE
INDENTURE.
 
    CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY OVER-ALLOT OR ENGAGE IN
TRANSACTIONS THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE
PREFERRED SECURITIES. SUCH TRANSACTIONS MAY INCLUDE STABILIZING, THE PURCHASE OF
PREFERRED SECURITIES TO COVER SYNDICATE SHORT POSITIONS AND THE IMPOSITION OF
PENALTY BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE "UNDERWRITING."
 
                                      S-4
<PAGE>
                               PROSPECTUS SUMMARY
 
    The following summary is qualified in its entirety by the more detailed
information and consolidated financial statements and notes thereto appearing
elsewhere in this Prospectus Supplement and the accompanying Prospectus. Unless
the context clearly suggests otherwise, references to "USB" or the "Company"
include U.S. Bancorp and its subsidiaries.
 
                                  THE COMPANY
 
    USB is a multi-state bank holding company, registered under the Bank Holding
Company Act of 1956, as amended, with its headquarters in Minneapolis,
Minnesota. On August 1, 1997, First Bank System, Inc. of Minneapolis acquired
U.S. Bancorp of Portland, Oregon, and assumed the U.S. Bancorp name. The
combined organization is the fifteenth largest U.S. commercial bank holding
company based on assets. At December 31, 1997, USB and its consolidated
subsidiaries had consolidated assets of $71.3 billion, consolidated deposits of
$49.0 billion, and shareholders' equity of $5.9 billion.
 
    USB operates eight banks and eleven trust companies serving millions of
customers principally in seventeen states from the Midwest to the Rocky
Mountains to the Pacific Northwest. USB also has various other subsidiaries
engaged in financial services.
 
    The banking subsidiaries of USB are engaged in general retail and commercial
banking business. These subsidiaries provide a wide variety of services to
individuals, businesses, industry, institutional organizations, governmental
entities and other financial institutions. Depository services include checking
and savings accounts and certificates of deposit and other time deposits.
Additional services include commercial lending, financing of import/export
trade, foreign exchange and retail and institutional brokerage services.
Treasury management and receivable lockbox collection are provided for corporate
customers. The banking and trust company subsidiaries of USB also provide a full
range of fiduciary products and services to individuals, estates, foundations,
business corporations and charitable organizations. Other subsidiaries of USB
provide financial services related to banking, including lease financing,
discount brokerage, investment advisory services and insurance agency and credit
life insurance services.
 
    On December 15, 1997, USB and Piper Jaffray Companies Inc. ("Piper Jaffray")
announced that they had entered into a definitive agreement whereby USB will
acquire Piper Jaffray for $730 million. The cash transaction will be accounted
for as a purchase, is subject to shareholder and regulatory approvals, and is
expected to close in the second quarter of 1998.
 
    USB was incorporated under Delaware law in 1929 and has functioned as a
multi-bank holding company since that time. Its principal executive offices are
located at 601 Second Avenue South, Minneapolis, Minnesota 55402-4302, and its
telephone number is (612) 973-1111.
 
                                   THE ISSUER
 
    The Issuer is a statutory business trust formed under Delaware law pursuant
to (i) the Trust Agreement and (ii) the filing of a certificate of trust with
the Delaware Secretary of State on January 28, 1998. Under the Trust Agreement,
the Issuer's business and affairs are conducted by the Property Trustee, the
Delaware Trustee and three individual Administrative Trustees who are officers
of the Company. The Issuer exists for the exclusive purposes of (i) issuing and
selling the Trust Securities, (ii) using the proceeds from the sale of the Trust
Securities to acquire the Junior Subordinated Debentures issued by USB and (iii)
engaging in only those other activities necessary, advisable or incidental
thereto (such as registering the transfer of the Trust Securities). Accordingly,
the Junior Subordinated Debentures will be the sole assets of the Issuer and
payments by USB under the Junior Subordinated Debentures and the Expense
Agreement will be the sole revenues of the Issuer. All of the Common Securities
will be owned by USB. The Common Securities will rank PARI PASSU, and payments
will be made thereon PRO RATA, with the Preferred Securities, except that upon
the occurrence and during the continuance of an event of default
 
                                      S-5
<PAGE>
under the Trust Agreement resulting from a Debenture Event of Default (as
defined herein), the rights of USB as holder of the Common Securities to payment
in respect of Distributions and payments upon liquidation, redemption or
otherwise will be subordinated to the rights of the holders of the Preferred
Securities. See "Description of Capital Securities--Subordination of Common
Securities" in the accompanying Prospectus. USB will acquire Common Securities
in an aggregate liquidation amount equal to 3.0% of the total capital of the
Issuer. The Issuer has a term of 49 years and 11 months, but may terminate
earlier as provided in the Trust Agreement.
 
    The principal executive office of the Issuer is c/o U.S. Bancorp, 601 Second
Avenue South, Minneapolis, Minnesota 55402-4302, Attention: Secretary, and its
telephone number is (612) 973-1111.
 
                              RECENT DEVELOPMENTS
 
    On February 18, 1998, USB's Board of Directors announced its intention to
declare a three-for-one split of USB's common stock and to increase the number
of common and preferred shares which USB has authority to issue from 500 million
shares and 10 million shares, respectively, to 1.5 billion shares and 50 million
shares, respectively. The increase in the number of authorized shares is subject
to shareholder approval. The stock split would be in the form of a dividend
payable May 18, 1998, to shareholders of record on May 4, 1998. The impact of
the stock split has not been reflected in the financial statements or any share
or per share data.
 
                                      S-6
<PAGE>
                                  THE OFFERING
 
<TABLE>
<S>                                 <C>
Issuer of Preferred Securities....  USB Capital II.
 
Preferred Securities Offered......  7.20% Trust Originated Preferred Securities. The
                                    Preferred Securities represent beneficial ownership
                                    interests in the Issuer's assets, which will consist
                                    solely of the Junior Subordinated Debentures.
 
Distributions.....................  The Distributions payable on each Preferred Security
                                    will be fixed at a rate per annum of 7.20% of the
                                    Liquidation Amount, will be cumulative, will accrue from
                                    the date of issuance of the Preferred Securities, and
                                    will be payable quarterly in arrears on the first day of
                                    January, April, July and October of each year (subject
                                    to possible deferral as described below), commencing on
                                    July 1, 1998. The amount of each Distribution due with
                                    respect to the Preferred Securities will include amounts
                                    accrued to, but excluding, the date the Distribution
                                    payment is due. See "Certain Terms of Preferred
                                    Securities--Distributions."
 
Extension periods.................  So long as no Debenture Event of Default has occurred
                                    and is continuing, USB will have the right, at any time,
                                    to defer payments of interest on the Junior Subordinated
                                    Debentures by extending the interest payment period
                                    thereon for an Extension Period, provided that no
                                    Extension Period may extend beyond the Stated Maturity
                                    of the Junior Subordinated Debentures. If interest
                                    payments are so deferred, Distributions on the Preferred
                                    Securities will also be deferred and USB will not be
                                    permitted, subject to certain exceptions described
                                    herein, to declare or pay any cash distributions with
                                    respect to USB's capital stock or to make any payment
                                    with respect to its debt securities that rank PARI PASSU
                                    with or junior to the Junior Subordinated Debentures.
                                    During an Extension Period, Distributions will continue
                                    to accumulate with interest thereon compounded
                                    quarterly. Holders of the Preferred Securities will be
                                    required to accrue income for United States federal
                                    income tax purposes. See "Certain Terms of Junior
                                    Subordinated Debentures--Option to Defer Interest
                                    Payment Period" and "Certain Federal Income Tax
                                    Consequences--Interest Income and Original Issue
                                    Discount."
 
Maturity..........................  The Junior Subordinated Debentures will mature on April
                                    1, 2028, or such date to which the maturity of the
                                    Junior Subordinated Debentures may be extended, as
                                    described under "Certain Terms of Junior Subordinated
                                    Debentures--General."
 
Redemption........................  The Preferred Securities are subject to mandatory
                                    redemption, in whole or in part, as the case may be,
                                    upon repayment of the Junior Subordinated Debentures at
                                    the Stated Maturity or their earlier redemption, in each
                                    case at a redemption price equal to the aggregate
                                    principal amount of the Preferred Securities plus any
                                    accumulated and unpaid Distributions thereon to the date
                                    of redemption. Subject to Federal Reserve approval, if
                                    then required under applicable capital guidelines or
                                    policies of the
</TABLE>
 
                                      S-7
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    Federal Reserve, the Junior Subordinated Debentures are
                                    redeemable prior to their Stated Maturity at the option
                                    of USB (i) on or after April 1, 2003 in whole at any
                                    time or in part from time to time, or (ii) at any time,
                                    in whole (but not in part), within 90 days following the
                                    occurrence and during the continuance of a Tax Event, an
                                    Investment Company Event or a Capital Treatment Event,
                                    in each case at a redemption price equal to 100% of the
                                    principal amount of the Junior Subordinated Debentures
                                    so redeemed, together with any accrued and unpaid
                                    interest thereon to the date fixed for redemption. See
                                    "Certain Terms of Preferred Securities--Redemption,"
                                    "Certain Terms of Junior Subordinated
                                    Debentures--Redemption" and "--Conditional Right to
                                    Redeem Upon a Tax Event, Investment Company Event or a
                                    Capital Treatment Event."
 
Distribution of Junior              USB has the right at any time to terminate the Issuer
  Subordinated Debentures.........  and cause the Junior Subordinated Debentures to be
                                    distributed to holders of Preferred Securities in
                                    liquidation of the Issuer, subject to USB having
                                    received prior approval of the Federal Reserve to do so
                                    if then required under applicable capital guidelines or
                                    policies of the Federal Reserve. See "Certain Terms of
                                    Preferred Securities--Liquidation of the Issuer and
                                    Distribution of Junior Subordinated Debentures to
                                    Holders."
 
Guarantee.........................  Taken together, USB's obligations under various
                                    documents described herein, including the Guarantee
                                    Agreement, provide a full guarantee of payments by the
                                    Issuer of Distributions and other amounts due on the
                                    Preferred Securities. Under the Guarantee Agreement, USB
                                    guarantees the payment of Distributions by the Issuer
                                    and payments on liquidation or redemption of the
                                    Preferred Securities (subordinate to the right to
                                    payment of Senior Debt) to the extent of funds held by
                                    the Issuer. If the Issuer has insufficient funds to pay
                                    Distributions on the Preferred Securities (I.E., if USB
                                    has failed to make required payments under the Junior
                                    Subordinated Debentures), a holder of the Preferred
                                    Securities may institute a legal proceeding directly
                                    against USB to enforce payment of such holder's PRO RATA
                                    share of such Distributions to such holder. See
                                    "Description of Junior Subordinated
                                    Debentures--Enforcement of Certain Rights by Holders of
                                    Capital Securities," "--Debenture Events of Default" and
                                    "Description of Guarantees" in the accompanying
                                    Prospectus.
 
Ranking...........................  The Preferred Securities will rank PARI PASSU, and
                                    payments thereon will be made PRO RATA, with the Common
                                    Securities of the Issuer held by USB, except as
                                    described under Description of Capital
                                    Securities--Subordination of Common Securities" in the
                                    accompanying Prospectus. The obligations of USB under
                                    the Guarantee, the Junior Subordinated Debentures and
                                    other documents described herein are unsecured and rank
                                    subordinate and junior in right of payment to all
                                    current and future Senior Debt, the amount of which is
                                    unlimited. At December 31, 1997, the aggregate principal
                                    amount of outstanding Senior Debt of
</TABLE>
 
                                      S-8
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    USB was approximately $10.2 billion. In addition,
                                    because USB is a holding company, the right of USB to
                                    participate in any distribution of assets of any
                                    subsidiary, including U.S. Bank National Association,
                                    upon such subsidiary's liquidation or reorganization or
                                    otherwise (and thus the ability of holders of Preferred
                                    Securities to benefit indirectly from such distribution)
                                    is subject to the prior claims of creditors of that
                                    subsidiary, except to the extent that USB may itself be
                                    recognized as a creditor of that subsidiary. USB may
                                    cause additional Preferred Securities to be issued by
                                    trusts similar to the Issuer in the future, and there is
                                    no limit on the amount of such securities that may be
                                    issued. In this event, USB's obligations under the
                                    Junior Subordinated Debentures to be issued to such
                                    other trusts and USB's guarantees of the payments by
                                    such trusts will rank PARI PASSU with USB's obligations
                                    under the Junior Subordinated Debentures and the
                                    Guarantee, respectively.
 
Voting rights.....................  The holders of Preferred Securities will generally have
                                    limited voting rights relating only to the modification
                                    of the Preferred Securities, the dissolution, winding-up
                                    or termination of the Issuer and certain other matters.
                                    See "Description of Capital Securities--Voting Rights;
                                    Amendment of Each Trust Agreement" in the accompanying
                                    Prospectus.
 
Use of proceeds...................  All of the proceeds from the sale of Preferred
                                    Securities will be invested by the Issuer in the Junior
                                    Subordinated Debentures. USB intends to use all proceeds
                                    from the sale of such Junior Subordinated Debentures for
                                    general corporate purposes. USB expects the Preferred
                                    Securities to qualify as Tier 1 capital under the
                                    capital guidelines of the Federal Reserve. See "Use of
                                    Proceeds."
 
Rating............................  The Preferred Securities are expected to be rated "a1"
                                    by Moody's Investors Service, Inc. and BBB+ by Standard
                                    & Poor's Ratings Services.
</TABLE>
 
                                  RISK FACTORS
 
    Prospective investors should carefully consider, among other things, the
discussion of various factors under the heading "Risk Factors" beginning on page
S-10 hereof.
 
                                      S-9
<PAGE>
                            ------------------------
 
    THE INFORMATION IN THIS PROSPECTUS SUPPLEMENT SUPPLEMENTS, AND SHOULD BE
READ IN CONJUNCTION WITH, THE INFORMATION CONTAINED IN THE ACCOMPANYING
PROSPECTUS. CAPITALIZED TERMS USED IN THIS PROSPECTUS SUPPLEMENT AND NOT
OTHERWISE DEFINED IN THIS PROSPECTUS SUPPLEMENT HAVE THE MEANINGS SET FORTH IN
THE ACCOMPANYING PROSPECTUS.
                            ------------------------
 
                                  RISK FACTORS
 
    PROSPECTIVE INVESTORS SHOULD CAREFULLY REVIEW THE INFORMATION CONTAINED
ELSEWHERE IN THIS PROSPECTUS SUPPLEMENT AND IN THE ACCOMPANYING PROSPECTUS AND
SHOULD PARTICULARLY CONSIDER THE FOLLOWING FACTORS IN CONNECTION WITH A DECISION
TO PURCHASE THE PREFERRED SECURITIES. BECAUSE HOLDERS OF THE PREFERRED
SECURITIES MAY RECEIVE JUNIOR SUBORDINATED DEBENTURES IN LIQUIDATION OF THE
ISSUER AND BECAUSE DISTRIBUTIONS ARE OTHERWISE LIMITED TO PAYMENTS ON THE JUNIOR
SUBORDINATED DEBENTURES, PROSPECTIVE PURCHASERS OF THE PREFERRED SECURITIES ARE
ALSO MAKING AN INVESTMENT DECISION WITH REGARD TO THE JUNIOR SUBORDINATED
DEBENTURES AND SHOULD CAREFULLY REVIEW ALL INFORMATION REGARDING THE JUNIOR
SUBORDINATED DEBENTURES CONTAINED HEREIN.
 
RANKING OF USB'S OBLIGATIONS UNDER THE JUNIOR SUBORDINATED DEBENTURES AND THE
  GUARANTEE
 
    All obligations of USB under the Guarantee, the Junior Subordinated
Debentures and other documents described herein are unsecured and rank
subordinate and junior in right of payment to all current and future Senior Debt
of USB, the amount of which is unlimited. At December 31, 1997, the aggregate
principal amount of outstanding Senior Debt was approximately $10.2 billion. In
addition, because USB is a holding company, the right of USB to participate in
any distribution of assets of any subsidiary, including U.S. Bank National
Association, upon such subsidiary's liquidation or reorganization or otherwise
(and thus the ability of holders of Preferred Securities to benefit indirectly
from such distribution) is subject to the prior claims of creditors of that
subsidiary, except to the extent that USB may itself be recognized as a creditor
of that subsidiary. Accordingly, the Junior Subordinated Debentures and the
Guarantee will be effectively subordinated to all existing and future
liabilities of USB's subsidiaries, and holders of the Junior Subordinated
Debentures and beneficiaries of the Guarantee should look only to the assets of
USB for principal and interest payments on the Junior Subordinated Debentures or
under the Guarantee, as the case may be. None of the Indenture, the Guarantee
Agreement or the Trust Agreement places any limitation on the amount of secured
or unsecured debt, including Senior Debt, that may be incurred by USB. Further,
there is no limitation on USB's ability to issue additional debentures of like
tenor with the Junior Subordinated Debentures in connection with any further
offerings of Preferred Securities and such additional debentures would rank PARI
PASSU with the Junior Subordinated Debentures. See "Description of Junior
Subordinated Debentures--Subordination" and "Description of Guarantees-- Status
of the Guarantees" in the accompanying Prospectus.
 
    The ability of the Issuer to pay amounts due on the Preferred Securities is
solely dependent upon USB making payments on the Junior Subordinated Debentures
as and when required.
 
OPTION TO DEFER INTEREST PAYMENT PERIOD; TAX CONSEQUENCES; MARKET PRICE
  CONSEQUENCES
 
    So long as no Debenture Event of Default has occurred and is continuing, USB
has the right under the Indenture to defer payment of interest on the Junior
Subordinated Debentures at any time or from time to time for an Extension
Period, provided that no Extension Period may extend beyond the Stated Maturity
of the Junior Subordinated Debentures. As a consequence of any such deferral,
quarterly Distributions on the Preferred Securities by the Issuer will be
deferred (and the amount of Distributions to which holders of the Preferred
Securities are entitled will accumulate additional Distributions thereon at the
rate of 7.20% per annum, compounded quarterly, from the relevant payment date
for such Distributions, to the extent permitted by applicable law) during any
such Extension Period. During any such Extension Period, USB may not, and may
not permit any subsidiary of USB to, (i) declare or pay any
 
                                      S-10
<PAGE>
dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of USB's capital stock or (ii) make any
payment of principal, interest or premium, if any, on or repay, repurchase or
redeem any debt securities of USB (including other series of Junior Subordinated
Debentures) that rank PARI PASSU with or junior in interest to the junior
subordinated debentures or (iii) make any guarantee payments with respect to any
guarantee by USB of the debt securities of any subsidiary of USB if such
guarantee ranks PARI PASSU with or junior in interest to the Junior Subordinated
Debentures (other than (a) dividends or distributions in capital stock of USB,
(b) any declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto, (c)
payments under the Guarantee, and (d) purchases of common stock related to the
issuance of common stock or rights under any of USB's benefit plans for its
directors, officers or employees). Prior to the termination of any Extension
Period, USB may further extend such Extension Period, provided that such
extension does not cause such Extension Period to exceed 20 consecutive
quarterly periods or to extend beyond the Stated Maturity. Upon the termination
of any Extension Period and the payment of all interest then accrued and unpaid
(together with interest thereon at the rate of 7.20%, per annum, compounded
quarterly from the interest payment date for such interest, to the extent
permitted by applicable law), USB may elect to begin a new Extension Period
subject to the above requirements. There is no limitation on the number of times
that USB may elect to begin an Extension Period prior to the Stated Maturity.
See "Certain Terms of Preferred Securities--Distributions" and "Certain Terms of
Junior Subordinated Debentures--Option to Defer Interest Payment Period."
 
    Should an Extension Period occur, a holder of Preferred Securities will be
required to accrue income (in the form of original issue discount) in respect of
its PRO RATA share of the Junior Subordinated Debentures held by the Issuer for
United States federal income tax purposes. As a result, a holder of Preferred
Securities will be required to include such income in gross income for United
States federal income tax purposes in advance of the receipt of cash
attributable to such income, and will not receive the cash related to such
income from the Issuer if the holder disposes of the Preferred Securities prior
to the record date for the payment of Distributions. See "Certain Federal Income
Tax Consequences--Interest Income and Original Issue Discount" and "--Sales or
Redemption of Preferred Securities."
 
    Because USB believes the likelihood of it exercising its option to defer
payments of interest is remote, the Junior Subordinated Debentures will be
treated as issued without "original issue discount" for United States federal
income tax purposes. As a result, holders of Preferred Securities will include
interest in taxable income under their own methods of accounting (I.E., cash or
accrual). If USB exercises its right to defer payments of interest, the holders
of Preferred Securities will be required to include their PRO RATA share of
original issue discount in gross income as it accrues for United States federal
income tax (and possibly other) purposes in advance of the receipt of cash. See
"Certain Federal Income Tax Consequences--Interest Income and Original Issue
Discount" and "--Sales or Redemption of Preferred Securities."
 
    USB has no current intention of exercising its right to defer payments of
interest by extending the interest payment period on the Junior Subordinated
Debentures. However, should USB elect to exercise its right to defer payments of
interest in the future, the market price of the Preferred Securities is likely
to be adversely affected. A holder that disposes of such holder's Preferred
Securities during an Extension Period, therefore, might not receive the same
return on such holder's investment as a holder that continues to hold the
Preferred Securities.
 
TAX EVENT REDEMPTION, INVESTMENT COMPANY EVENT REDEMPTION OR CAPITAL TREATMENT
  EVENT REDEMPTION
 
    Upon the occurrence and during the continuation of a Tax Event, an
Investment Company Event or a Capital Treatment Event (whether occurring before
or after April 1, 2003), USB has the right, if certain conditions are met, to
redeem the Junior Subordinated Debentures in whole (but not in part) at 100% of
 
                                      S-11
<PAGE>
the principal amount together with accrued but unpaid interest to the date fixed
for redemption within 90 days following the occurrence of such Tax Event,
Investment Company Event or Capital Treatment Event and therefore cause a
mandatory redemption of the Preferred Securities. The exercise of such right is
subject to USB having received prior approval of the Federal Reserve to do so if
then required under applicable capital guidelines or policies of the Federal
Reserve. See "Certain Terms of Junior Subordinated Debentures--Conditional Right
to Redeem upon a Tax Event, Investment Company Event or Capital Treatment Event"
and "Description of Capital Securities--Redemption or Exchange" in the
accompanying Prospectus.
 
    A "Tax Event" means the receipt by USB and the Issuer of an opinion of
counsel experienced in such matters to the effect that, as a result of any
amendment to, or change (including any announced prospective change) in, the
laws (or any regulations thereunder) of the United States or any political
subdivision or taxing authority thereof or therein, or as a result of any
official administrative pronouncement or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
which prospective change, pronouncement or decision is announced on or after the
date of issuance of the Preferred Securities under the Trust Agreement, there is
more than an insubstantial risk that (i) the Issuer is, or will be within 90
days of the date of such opinion, subject to United States federal income tax
with respect to income received or accrued on the Junior Subordinated
Debentures, (ii) interest payable by USB on the Junior Subordinated Debentures
is not, or within 90 days of the date of such opinion, will not be, deductible
by USB, in whole or in part, for United States federal income tax purposes, or
(iii) the Issuer is, or will be within 90 days of the date of the opinion,
subject to more than a DE MINIMIS amount of other taxes, duties or other
governmental charges. With respect to Junior Subordinated Debentures which are
no longer held by the Issuer or another issuer, "Tax Event" means receipt by USB
of an opinion of counsel experienced in such matters to the effect that, as a
result of any amendment to, or change (including any announced prospective
change) in, the laws (or any regulations thereunder) of the United States or any
political subdivision or taxing authority thereof or therein, or as a result of
any official administrative pronouncement or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
which prospective change, pronouncement or decision is announced on or after the
date or issuance of the Junior Subordinated Debentures under the Indenture,
there is more than an insubstantial risk that interest payable by USB on the
Junior Subordinated Debentures is not, or within 90 days of the date of such
opinion will not be, deductible by USB, in whole or in part, for United States
federal income tax purposes (each of the circumstances referred to in clauses
(i), (ii) and (iii) of the preceding sentence and the circumstances referred to
in this sentence being referred to herein as an "Adverse Tax Consequence").
 
    An "Investment Company Event" means the receipt by USB and the Issuer of an
opinion of counsel experienced in such matters to the effect that, as a result
of any change in law or regulation or a change in interpretation or application
of law or regulation by any legislative body, court, governmental agency or
regulatory authority, the Issuer is or will be considered an "investment
company" that is required to be registered under the Investment Company Act of
1940, as amended (the "Investment Company Act"), which change becomes effective
on or after the date of issuance of the Preferred Securities under the Trust
Agreement.
 
    A "Capital Treatment Event" means the reasonable determination by USB that,
as a result of any amendment to, or change (including any announced prospective
change) in, the laws (or any regulations thereunder) of the United States or any
political subdivision thereof or therein, or as a result of any official or
administrative pronouncement or action or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
which prospective change, pronouncement, action or decision is announced on or
after the date of issuance of the Preferred Securities under the Trust
Agreement, there is more than an insubstantial risk of impairment of USB's
ability to treat an amount equal to the Liquidation Amount of the Preferred
Securities (or any substantial portion thereof) as "Tier 1
 
                                      S-12
<PAGE>
capital" (or the then equivalent thereof) for purposes of the capital adequacy
guidelines of the Federal Reserve, as then in effect and applicable to USB.
 
POSSIBLE TAX LAW CHANGES AFFECTING THE PREFERRED SECURITIES
 
    Congress and the Clinton Administration have from time to time considered
proposals that would deny an issuer a deduction for United States income tax
purposes for the payment of interest on instruments with characteristics similar
to the Junior Subordinated Debentures. Such proposals have been considered in
connection with recent legislation, including the recently enacted Taxpayer
Relief Act of 1997 (the "Relief Act"). Although no such proposals have been
included in the final provisions of recent legislation, including the Relief
Act, there can be no assurance that future legislation will not adversely affect
the tax treatment of the Junior Subordinated Debentures, potentially on a
retroactive basis. Such a change would give rise to a Tax Event which may permit
USB, subject to approval of the Federal Reserve, to cause a redemption of the
Preferred Securities by electing to prepay the Junior Subordinated Debentures.
See "Certain Terms of Preferred Securities--Redemption," "Certain Terms of
Junior Subordinated Debentures--Redemption," and "Certain Federal Income Tax
Consequences."
 
EXCHANGE OF PREFERRED SECURITIES FOR JUNIOR SUBORDINATED DEBENTURES
 
    USB has the right at any time to terminate the Issuer and, after
satisfaction of liabilities to creditors of the Issuer as required by applicable
law, cause the Junior Subordinated Debentures to be distributed to the holders
of the Preferred Securities in exchange therefor upon liquidation of the Issuer.
The exercise of such right is subject to USB having received prior approval of
the Federal Reserve if then required under applicable capital guidelines or
policies of the Federal Reserve. See "Certain Terms of Preferred
Securities--Liquidation of the Issuer and Distribution of Junior Subordinated
Debentures to Holders" and "Description of Capital Securities--Redemption or
Exchange" in the accompanying Prospectus.
 
    Under current United States federal income tax law and interpretations, a
distribution of the Junior Subordinated Debentures in exchange for Preferred
Securities upon a liquidation of the Issuer would not be a taxable event to
holders of the Preferred Securities and will result in the holder of Preferred
Securities receiving directly such holder's PRO RATA share of the Junior
Subordinated Debentures previously held indirectly through the Issuer, with a
holding period and aggregate tax basis equal to the holding period and aggregate
tax basis such holder of Preferred Securities had in its Preferred Securities
before such distribution. A holder of Preferred Securities will accrue interest
in respect of Junior Subordinated Debentures received from the Issuer in the
manner described below under "Certain Federal Income Tax Consequences--Interest
Income and Original Issue Discount." However, if there should be a change in law
(including a change in legal interpretation), which would cause the Issuer to be
subject to United States federal income tax with respect to income received or
accrued on the Junior Subordinated Debentures, a distribution of the Junior
Subordinated Debentures by the Issuer would be a taxable event to the Issuer and
the holders of the Preferred Securities. See "Certain Federal Income Tax
Consequences--Distribution of Junior Subordinated Debentures to Holders of
Preferred Securities."
 
MARKET PRICES
 
    There can be no assurance as to the market prices for the Preferred
Securities or the Junior Subordinated Debentures that may be distributed in
exchange for the Preferred Securities upon liquidation of the Issuer.
Accordingly, the Preferred Securities that an investor may purchase, whether
pursuant to the offer made hereby or in the secondary market, or the Junior
Subordinated Debentures that a holder of the Preferred Securities may receive
upon liquidation of the Issuer, may trade at a discount from the price that the
investor paid to purchase the Preferred Securities offered hereby. As a result
of the existence of USB's right to defer interest payments, the market price of
the Preferred Securities may be more volatile than the market prices of other
securities that are not subject to such optional deferrals. See
 
                                      S-13
<PAGE>
"Certain Terms of Junior Subordinated Debentures" and "Description of Junior
Subordinated Debentures--Corresponding Junior Subordinated Debentures" in the
accompanying Prospectus.
 
RIGHTS UNDER THE GUARANTEE
 
    The Guarantee will be qualified as an indenture under the Trust Indenture
Act of 1939, as amended (the "Trust Indenture Act"). Wilmington Trust Company
will act as the indenture trustee under the Guarantee (the "Guarantee Trustee")
for the purposes of compliance with the Trust Indenture Act and will hold the
Guarantee for the benefit of the holders of the Preferred Securities. Wilmington
Trust Company will also act as Debenture Trustee for the Junior Subordinated
Debentures and as Property Trustee and will act as Delaware Trustee under the
Trust Agreement.
 
    The Guarantee guarantees to the holders of the Preferred Securities the
following payments, to the extent not paid by the Issuer: (i) any accumulated
and unpaid Distributions required to be paid on the Preferred Securities, to the
extent that the Issuer has funds on hand available therefor at such time, (ii)
the redemption price with respect to any Preferred Securities called for
redemption, to the extent that the Issuer has funds on hand available therefor
at such time and (iii) upon a voluntary or involuntary dissolution, winding-up
or liquidation of the Issuer (unless the Junior Subordinated Debentures are
distributed to holders of the Preferred Securities), the lesser of (a) the
aggregate of the Liquidation Amount and all accumulated and unpaid Distributions
to the date of payment to the extent that the Issuer has funds on hand available
therefor at such time (the "Liquidation Distribution") and (b) the amount of
assets of the Issuer remaining available for distribution to holders of the
Preferred Securities after satisfaction of liabilities to creditors of the
Issuer as required by applicable law.
 
    The holders of not less than a majority in aggregate Liquidation Amount of
the Preferred Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Guarantee Trustee, in
respect of the Guarantee or to direct the exercise of any trust power conferred
upon the Guarantee Trustee under the Guarantee Agreement. Any holder of the
Preferred Securities may institute a legal proceeding directly against USB to
enforce its rights under the Guarantee without first instituting a legal
proceeding against the Issuer, the Guarantee Trustee or any other person or
entity. If USB were to default on its obligation to pay amounts payable under
the Junior Subordinated Debentures, the Issuer would lack funds for the payment
of Distributions or amounts payable on redemption of the Preferred Securities or
otherwise and, in such event, holders of the Preferred Securities would not be
able to rely upon the Guarantee for payment of such amounts. Instead, in the
event a Debenture Event of Default shall have occurred and be continuing and
such event is attributable to the failure of USB to pay interest on or principal
of the Junior Subordinated Debentures on the applicable payment date, then a
holder of Preferred Securities may institute a legal proceeding directly against
USB pursuant to the terms of the Indenture for enforcement of payment to such
holder of the principal of or interest on such Junior Subordinated Debentures
having a principal amount equal to the aggregate Liquidation Amount of the
Preferred Securities of such holder (a "Direct Action"). In connection with such
Direct Action, USB will have a right of set-off under the Indenture to the
extent of any payment made by USB to such holder of Preferred Securities in the
Direct Action. Except as described herein, holders of Preferred Securities will
not be able to exercise directly any other remedy available to the holders of
the Junior Subordinated Debentures or assert directly any other rights in
respect of the Junior Subordinated Debentures. See "Description of Junior
Subordinated Debentures-- Enforcement of Certain Rights by Holders of Preferred
Securities," "--Debenture Events of Default" and "Description of Guarantees" in
the accompanying Prospectus. The Trust Agreement provides that each holder of
Preferred Securities by acceptance thereof agrees to the provisions of the
Guarantee Agreement and the Indenture.
 
LIMITED COVENANTS
 
    The covenants in the Indenture are limited and there are no covenants
relating to USB in the Trust Agreement. As a result, neither the Indenture nor
the Trust Agreement protects holders of Junior
 
                                      S-14
<PAGE>
Subordinated Debentures, or Preferred Securities, respectively, in the event of
a material adverse change in USB's or any of its subsidiaries' financial
condition or results of operations or limits the ability of USB or any of its
subsidiaries to incur additional indebtedness. Therefore, the provisions of
these governing instruments should not be considered a significant factor in
evaluating whether USB will be able to comply with its obligations under the
Junior Subordinated Debentures or the Guarantee.
 
LIMITED VOTING RIGHTS
 
    Holders of Preferred Securities will generally have limited voting rights
relating only to the modification of the Preferred Securities and the Guarantee,
the dissolution, winding-up or liquidation of the Issuer and the exercise of the
Issuer's rights as holder of the Junior Subordinated Debentures. Holders of
Preferred Securities will not be entitled to vote to appoint, remove or replace
the Property Trustee or the Delaware Trustee as such voting rights are vested
exclusively in the holder of the Common Securities except upon the occurrence of
certain events described in the accompanying Prospectus, and the holders of the
Preferred Securities will in no event be entitled to vote to appoint, remove or
replace any Administrative Trustee as such voting rights are vested exclusively
in the holder of the Common Securities. In no event will the holders of the
Preferred Securities have the right to vote to appoint, remove or replace the
Administrative Trustees; such voting rights are vested exclusively in the holder
of the Common Securities. The Property Trustee, the Administrative Trustees and
USB may amend the Trust Agreement without the consent of holders of Preferred
Securities to ensure that the Issuer will be classified for United States
federal income tax purposes as a grantor trust or to ensure that the Issuer will
not be required to register as an "investment company," even if such action
adversely affects the interests of such holders. See "Description of Preferred
Securities--Voting Rights; Amendment of Each Trust Agreement" and "--Removal of
Trustees" in the accompanying Prospectus.
 
EXTENSION OF STATED MATURITY OF THE JUNIOR SUBORDINATED DEBENTURES
 
    USB will also have the right to extend the maturity of the Junior
Subordinated Debentures, whether or not the Issuer has been terminated and the
Junior Subordinated Debentures have been distributed to holders of the Preferred
Securities, to a date no later than the 49th anniversary of the initial issuance
of the Preferred Securities, provided that USB can extend the maturity only if
at the time such election is made and at the time of such extension (i) USB is
not in bankruptcy, otherwise insolvent or in liquidation, (ii) USB is not in
default in the payment of any interest or principal on the Junior Subordinated
Debentures, (iii) the Issuer is not in arrears on payments of Distributions on
the Preferred Securities and no deferred Distributions are accumulated and (iv)
the Junior Subordinated Debentures are rated not less than BBB- by Standard &
Poor's Ratings Services or not less than Baa3 by Moody's Investor Service, Inc.
or the equivalent by any other nationally recognized statistical rating
organization.
 
LISTING OF PREFERRED SECURITIES--TRADING CHARACTERISTICS
 
    The Preferred Securities have been approved for listing on the New York
Stock Exchange, subject to official notice of issuance. Trading of the Preferred
Securities on the New York Stock Exchange is expected to commence within a
30-day period after the initial delivery of the Preferred Securities. Although
the Underwriters have indicated to USB and the Issuer that they intend to make a
market in the Preferred Securities prior to commencement of trading on the New
York Stock Exchange as permitted by applicable laws and regulations, they are
not obligated to do so and may discontinue any such market-making activities at
any time without notice.
 
    The Preferred Securities may trade at prices that do not fully reflect the
value of accrued and unpaid interest with respect to the underlying Junior
Subordinated Debentures. See "Certain Federal Income Tax Consequences--Interest
Income and Original Issue Discount" and "Certain Federal Income Tax
Consequences--Sales or Redemption of Capital Securities" for a discussion of the
United States federal income tax consequences that may result from a taxable
disposition of the Preferred Securities.
 
                                      S-15
<PAGE>
POSSIBLE ILLIQUIDITY OF THE SECONDARY MARKET FOR PREFERRED SECURITIES
 
    It is not possible to predict how the Preferred Securities will trade in the
secondary market or whether such market will be liquid or illiquid. There is
currently no secondary market for the Preferred Securities. There can be no
assurance that a secondary market will develop or, if a secondary market does
develop, that it will provide the holders of the Preferred Securities with
liquidity of investment or that it will continue for the life of the Preferred
Securities.
 
                                USE OF PROCEEDS
 
    The net proceeds from the offering of the Preferred Securities are estimated
to be $350,000,000 (before deducting expenses associated with the offering). All
of the proceeds from the sale of the Preferred Securities will be invested by
the Issuer in the Junior Subordinated Debentures. USB intends to use all of the
proceeds from the sale of such Junior Subordinated Debentures for general
corporate purposes.
 
    USB is required by the Federal Reserve to maintain certain levels of capital
for bank regulatory purposes. On October 21, 1996, the Federal Reserve announced
that cumulative capital securities having the characteristics of the Preferred
Securities could be included as Tier 1 Capital for bank holding companies. Such
Tier 1 Capital treatment, together with USB's ability to deduct, for federal
income tax purposes, interest payable on the Junior Subordinated Debentures,
will provide USB with a more cost-effective means of obtaining capital for bank
regulatory purposes than other Tier 1 Capital alternatives currently available
to it.
 
                              ACCOUNTING TREATMENT
 
    For financial reporting purposes, the Issuer will be treated as a subsidiary
of USB and, accordingly, the accounts of the Issuer will be included in the
consolidated financial statements of USB. For financial reporting purposes, USB
will record Distributions payable on the Preferred Securities as an expense in
the consolidated statements of income.
 
    USB has reported and undertakes to report in its financial statements and in
its Exchange Act (as hereinafter defined) reports, information regarding its
relationship to the Issuer and its obligations with respect to holders of the
Preferred Securities in a line item on its consolidated balance sheet that reads
as follows: "Company-obligated mandatorily redeemable preferred securities of
subsidiary Trust holding solely the Junior Subordinated Debentures of USB." In
addition, a footnote to USB's consolidated financial statements will state that
the sole asset of the Issuer is $360,825,000 aggregate principal amount of
Junior Subordinated Debentures due April 1, 2028.
 
    USB will also include an audited explanatory footnote in its audited
financial statements which states that: (i) the Trust is a wholly-owned
subsidiary of USB, (ii) the sole asset of the Trust is $360,825,000 aggregate
principal amount of Junior Subordinated Debentures due April 1, 2028, and (iii)
USB's obligations under the Junior Subordinated Debentures and related
documents, taken together, constitute a full and unconditional guarantee by USB
of the Trust's obligations under the Preferred Securities.
 
                                      S-16
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the consolidated capitalization of USB and
its subsidiaries as of December 31, 1997 and as adjusted to give effect to the
consummation of the offering of the Preferred Securities. The following data
should be read in conjunction with the consolidated financial statements and
notes thereto of USB and its subsidiaries incorporated herein by reference. See
"Incorporation of Certain Documents by Reference."
 
<TABLE>
<CAPTION>
                                                                                              DECEMBER 31, 1997
                                                                                            ----------------------
(DOLLARS IN MILLIONS)                                                                        ACTUAL    AS ADJUSTED
                                                                                            ---------  -----------
<S>                                                                                         <C>        <C>
Deposits..................................................................................  $  49,027   $  49,027
Short-term borrowings.....................................................................      3,292       3,292
Long Term Debt (with original maturities over one year)...................................     10,247      10,247
                                                                                            ---------  -----------
Total deposits and debt...................................................................     62,566      62,566
Company-obligated mandatorily redeemable preferred securities of subsidiary trusts holding
  solely the junior subordinated debentures of the parent company.........................        600         950
SHAREHOLDERS' EQUITY
Common stock--$1.25 par value--500,000,000 shares authorized, 246,644,338 shares issued...        308         308
Capital surplus...........................................................................      1,878       1,878
Retained earnings.........................................................................      3,645       3,645
Unrealized gains on investment securities available for sale, net of tax..................         59          59
                                                                                            ---------  -----------
  Total shareholders' equity..............................................................      5,890       5,890
                                                                                            ---------  -----------
    TOTAL CAPITALIZATION..................................................................  $  69,056   $  69,406
                                                                                            ---------  -----------
                                                                                            ---------  -----------
</TABLE>
 
                                  THE COMPANY
 
    USB is a multi-state bank holding company, registered under the Bank Holding
Company Act of 1956, as amended, with its headquarters in Minneapolis,
Minnesota. On August 1, 1997, First Bank System, Inc. of Minneapolis acquired U.
S. Bancorp of Portland, Oregon, and assumed the U.S. Bancorp name. The combined
organization is the fifteenth largest U.S. commercial bank holding company based
on assets. At December 31, 1997, USB and its consolidated subsidiaries had
consolidated assets of $71.3 billion, consolidated deposits of $49.0 billion,
and shareholders' equity of $5.9 billion.
 
    USB operates eight banks and eleven trust companies serving millions of
customers principally in seventeen states from the Midwest to the Rocky
Mountains to the Pacific Northwest. USB also has various other subsidiaries
engaged in financial services.
 
    The banking subsidiaries of USB are engaged in general retail and commercial
banking business. These subsidiaries provide a wide variety of services to
individuals, businesses, industry, institutional organizations, governmental
entities and other financial institutions. Depository services include checking
and savings accounts and certificates of deposit and other time deposits.
Additional services include commercial lending, financing of import/export
trade, foreign exchange and retail and institutional brokerage services.
Treasury management and receivable lockbox collection are provided for corporate
customers. The banking and trust company subsidiaries of USB also provide a full
range of fiduciary products and services to individuals, estates, foundations,
business corporations and charitable organizations. Other subsidiaries of USB
provide financial services related to banking, including lease financing,
discount brokerage, investment advisory services and insurance agency and credit
life insurance services.
 
    On December 15, 1997, USB and Piper Jaffray, announced that they had entered
into a definitive agreement whereby USB will acquire Piper Jaffray for $730
million. The cash transaction will be accounted
 
                                      S-17
<PAGE>
for as a purchase, is subject to shareholder and regulatory approvals, and is
expected to close in the second quarter of 1998.
 
    USB was incorporated under Delaware law in 1929 and has functioned as a
multi-bank holding company since that time. Its principal executive offices are
located at 601 Second Avenue South, Minneapolis, Minnesota 55402-4302, and its
telephone number is (612) 973-1111.
 
    The common stock, par value $1.25 per share, of USB is listed on the New
York Stock Exchange.
 
                                     ISSUER
 
    The Issuer is a statutory business trust formed under Delaware law pursuant
to (i) the Trust Agreement and (ii) the filing of a certificate of trust with
the Delaware Secretary of State on January 28, 1998. Under the Trust Agreement,
the Issuer's business and affairs are conducted by the Property Trustee, the
Delaware Trustee and three individual Administrative Trustees who are officers
of the Company. The Issuer exists for the exclusive purposes of (i) issuing and
selling the Trust Securities, (ii) using the proceeds from the sale of the Trust
Securities to acquire the Junior Subordinated Debentures issued by USB and (iii)
engaging in only those other activities necessary, advisable or incidental
thereto (such as registering the transfer of the Trust Securities). Accordingly,
the Junior Subordinated Debentures will be the sole assets of the Issuer and
payments by USB under the Junior Subordinated Debentures and the Expense
Agreement will be the sole revenues of the Issuer. All of the Common Securities
will be owned by USB. The Common Securities will rank PARI PASSU, and payments
will be made thereon pro rata, with the Preferred Securities, except that upon
the occurrence and during the continuance of an event of default under the Trust
Agreement resulting from a Debenture Event of Default, the rights of USB as
holder of the Common Securities to payment in respect of Distributions and
payments upon liquidation, redemption or otherwise will be subordinated to the
rights of the holders of the Preferred Securities. See "Description of Capital
Securities--Subordination of Common Securities" in the accompanying Prospectus.
USB will acquire Common Securities in an aggregate liquidation amount equal to
3.0% of the total capital of the Issuer. The Issuer has a term of 49 years and
11 months, but may terminate earlier as provided in the Trust Agreement.
 
    It is anticipated that the Issuer will not be subject to the reporting
requirements under the Securities Exchange Act of 1934, as amended (the
"Exchange Act").
 
    The principal executive office of the Issuer is c/o U.S. Bancorp, 601 Second
Avenue South, Minneapolis, Minnesota 55402-4302, Attention: Secretary, and its
telephone number is (612) 973-1111.
 
                     CERTAIN TERMS OF PREFERRED SECURITIES
 
GENERAL
 
    The following summary of certain terms and provisions of the Preferred
Securities supplements the description of the terms and provisions of the
Preferred Securities set forth in the accompanying Prospectus under the heading
"Description of Capital Securities," to which reference is hereby made. This
summary of certain terms and provisions of the Preferred Securities and the
Trust Agreement does not purport to be complete and is subject to, and is
qualified in its entirety by reference to, all the provisions of the Trust
Agreement, including the definitions therein of certain terms, and the Trust
Indenture Act. Wherever particular defined terms of the Trust Agreement (as
amended or supplemented from time to time) are referred to herein, such defined
terms are incorporated herein. The form of the Trust Agreement has been filed as
an exhibit to the Registration Statement of which this Prospectus Supplement and
the accompanying Prospectus form a part.
 
                                      S-18
<PAGE>
DISTRIBUTIONS
 
    The Preferred Securities represent beneficial ownership interests in the
Issuer, and Distributions on the Preferred Securities will be payable at the
annual rate of 7.20% of the stated Liquidation Amount of $25, payable quarterly
in arrears on the first day of January, April, July and October in each year
(subject to possible deferral as described herein), to the holders of the
Preferred Securities on the relevant record dates (each date on which
Distributions are payable in accordance with the foregoing, a "Distribution
Date"). The amount of each Distribution due with respect to the Preferred
Securities will include amounts accrued to, but excluding, the relevant
Distribution Date. Distributions on the Preferred Securities will be payable to
the holders thereof as they appear on the register of the Issuer on the relevant
record date which, for so long as the Preferred Securities remain in book-entry
form, will be one Business Day (as defined below) prior to the relevant
Distribution Date and, in the event the Preferred Securities are not in
book-entry form, will be the fifteenth day of the month prior to the relevant
Distribution Date. Distributions will accumulate from the date of original
issuance. The first Distribution Date for the Preferred Securities will be July
1, 1998.
 
    The amount of Distributions payable for any period will be computed on the
basis of a 360-day year of twelve 30-day months. In the event that any
Distribution Date would otherwise fall on a day that is not a Business Day, such
Distribution Date shall be postponed to the next Business Day (and without any
additional Distributions or other payment in respect to any such delay) except
that, if such Business Day falls in the next succeeding calendar year, such
Distribution Date shall be the immediately preceding Business Day, in each case
payments will be made with the same force and effect as if made on the date such
payment was originally payable. As used in this Prospectus, a "Business Day"
shall mean any day other than a Saturday or a Sunday, or a day on which banking
institutions in the State of New York are authorized or required by law or
executive order to remain closed or a day on which the corporate trust office of
the Property Trustee or the Indenture Trustee is closed for business. See
"Description of Capital Securities" in the accompanying Prospectus.
 
    So long as no Debenture Event of Default has occurred and is continuing, USB
has the right under the Indenture to defer the payment of interest on the Junior
Subordinated Debentures at any time or from time to time for an Extension
Period, provided that no Extension Period may extend beyond the Stated Maturity
of the Junior Subordinated Debentures. As a consequence of any such election,
quarterly Distributions on the Preferred Securities will be deferred by the
Issuer during any such Extension Period. During any such Extension Period,
Distributions to which holders of Preferred Securities are entitled will
accumulate additional amounts thereon at the rate per annum of 7.20% thereof,
compounded quarterly from the relevant Distribution Date, to the extent
permitted under applicable law. The term "Distributions" as used herein shall
include any such additional accumulated amounts. During any such Extension
Period, USB may not and may not permit any subsidiary of USB to (i) declare or
pay any dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of USB's capital stock or (ii) make any
payment of principal, interest or premium, if any, on or repay, repurchase or
redeem any debt securities of USB (including other series of Junior Subordinated
Debentures) that rank PARI PASSU with or junior in interest to the Junior
Subordinated Debentures or (iii) make any guarantee payments with respect to any
guarantee by USB of the debt securities of any subsidiary of USB if such
guarantee ranks PARI PASSU with or junior in interest to the Junior Subordinated
Debentures (other than (a) dividends or distributions in capital stock of USB,
(b) any declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto, (c)
payments under the Guarantee and (d) purchases of common stock related to the
issuance of common stock or rights under any of USB's benefit plans for its
directors, officers or employees). Prior to the termination of any such
Extension Period, USB may further extend such Extension Period, provided that
such extension does not cause such Extension Period to exceed 20 consecutive
quarterly periods or extend beyond the Stated Maturity. Upon the termination of
any such Extension Period and the payment of all interest then accrued
 
                                      S-19
<PAGE>
and unpaid (together with interest thereon at the rate of 7.20% per annum,
compounded quarterly from the interest payment date for such interest, to the
extent permitted by applicable law), USB may elect to begin a new Extension
Period subject to the above requirements. There is no limitation on the number
of times that USB may elect to begin an Extension Period prior to the Stated
Maturity. See "Certain Terms of Junior Subordinated Debentures--Option to Defer
Interest Payments" and "Certain Federal Income Tax Consequences--Interest Income
and Original Issue Discount."
 
    USB has no current intention of exercising its right to defer payments of
interest by extending the interest payment period on the Junior Subordinated
Debentures.
 
REDEMPTION
 
    The Junior Subordinated Debentures will mature on April 1, 2028 or such
other date to which the maturity of the Junior Subordinated Debentures may be
extended as described under "Certain Terms of Junior Subordinated
Debentures--General." Upon the repayment or redemption, in whole or in part, of
the Junior Subordinated Debentures, whether at Stated Maturity or upon earlier
redemption as provided in the Indenture, the proceeds from such repayment or
redemption shall be applied by the Property Trustee to redeem a Like Amount (as
defined in the accompanying Prospectus) of the Preferred Securities, upon not
less than 30 nor more than 60 days' notice prior to the date fixed for
redemption, at a redemption price, with respect to the Preferred Securities (the
"Redemption Price"), equal to the aggregate Liquidation Amount of such Preferred
Securities, plus accumulated and unpaid Distributions thereon to the date of
redemption (the "Redemption Date"). See "Certain Terms of Junior Subordinated
Debentures-- Redemption." If less than all of the Junior Subordinated Debentures
are to be repaid or redeemed on a Redemption Date, then the proceeds from such
repayment or redemption shall be allocated to the redemption PRO RATA of the
Preferred Securities and the Common Securities.
 
    USB will have the right to redeem the Junior Subordinated Debentures (i) on
or after April 1, 2003 in whole at any time or in part from time to time at a
redemption price equal to 100% of the principal amount of the Junior
Subordinated Debentures so redeemed, together with any accrued and unpaid
interest thereon to the date fixed for redemption, or (ii) at any time, in whole
(but not in part), upon the occurrence of a Tax Event, an Investment Company
Event or a Capital Treatment Event at a redemption price equal to 100% of the
principal amount of the Junior Subordinated Debentures so redeemed, together
with any accrued and unpaid interest to the date fixed for redemption, in each
case subject to receipt of prior approval by the Federal Reserve if then
required under applicable capital guidelines or policies of the Federal Reserve.
See "Certain Terms of Junior Subordinated Debentures--Redemption,"
"--Conditional Right to Redeem upon a Tax Event, Investment Company Event or
Capital Treatment Event" and "Description of Junior Subordinated
Debentures--Redemption" in the accompanying Prospectus. A redemption of the
Junior Subordinated Debentures would cause a mandatory redemption of the
Preferred Securities and the Common Securities.
 
    Under regulations of the Federal Reserve, any perpetual preferred securities
with a feature permitting redemption at the option of the issuer can qualify as
Tier 1 capital only if the redemption is subject to prior approval of the
Federal Reserve. Therefore, any redemption of the Junior Subordinated Debentures
and consequent redemption of the Preferred Securities will be subject to the
prior approval of the Federal Reserve if such regulations have not been revised.
Under current policies, the Federal Reserve may grant approval of a redemption
without a formal application or notice if (1) the redemption, together with
other redemptions and repurchases of securities in the preceding 12 months,
constitutes less than 10% of the bank holding company's net worth or (2) both
before and after the redemption, the bank holding company is well-capitalized
and highly-rated.
 
LIQUIDATION OF THE ISSUER AND DISTRIBUTION OF JUNIOR SUBORDINATED DEBENTURES TO
  HOLDERS
 
    USB has the right at any time to terminate the Issuer and, after
satisfaction of liabilities to creditors of the Issuer as required by applicable
law, to cause the Junior Subordinated Debentures to be distributed to
 
                                      S-20
<PAGE>
the holders of the Preferred Securities in exchange therefor upon liquidation of
the Issuer. Such right is subject to USB having received prior approval of the
Federal Reserve if then required under applicable capital guidelines or policies
of the Federal Reserve.
 
    Under current United States federal income tax law and interpretations, a
distribution of the Junior Subordinated Debentures in exchange for Preferred
Securities upon a liquidation of the Issuer would not be a taxable event to
holders of the Preferred Securities. However, if there should be a change in law
(including a change in legal interpretation) which would cause the Issuer to be
subject to United States federal income tax with respect to the income received
or accrued on the Junior Subordinated Debentures, a distribution of the Junior
Subordinated Debentures by the Issuer would be a taxable event to the Issuer and
the holders of the Preferred Securities. See "Certain Federal Income Tax
Consequences--Distribution of the Junior Subordinated Debentures to Holders of
Preferred Securities." If USB elects neither to redeem the Junior Subordinated
Debentures prior to maturity nor to liquidate the Issuer and distribute the
Junior Subordinated Debentures to holders of the Preferred Securities in
exchange therefor, the Preferred Securities will remain outstanding until the
Stated Maturity of the Junior Subordinated Debentures.
 
    If USB elects to liquidate the Issuer and thereby causes the Junior
Subordinated Debentures to be distributed to holders of the Preferred Securities
in exchange therefor upon liquidation of the Issuer, USB shall continue to have
the right to redeem the Junior Subordinated Debentures in certain circumstances
upon the occurrence of a Tax Event, Investment Company Event or a Capital
Treatment Event, as described under "Certain Terms of Junior Subordinated
Debentures--Conditional Right to Redeem upon a Tax Event, Investment Company
Event or Capital Treatment Event."
 
LIQUIDATION VALUE
 
    The amount payable on the Preferred Securities in the event of any
liquidation of the Issuer is $25 per Preferred Security plus accumulated and
unpaid Distributions, which amount may be paid in the form of a distribution of
a Like Amount of Junior Subordinated Debentures, subject to certain exceptions.
See "Description of Capital Securities--Liquidation Distribution Upon
Termination" in the accompanying Prospectus.
 
REGISTRATION OF THE PREFERRED SECURITIES
 
    The Preferred Securities will be represented by global certificates
registered in the name of DTC or its nominee. Beneficial interests in the
Preferred Securities will be shown on, and transfers thereof will be effected
only through, records maintained by participants in DTC. Except as described
below and in the accompanying Prospectus, Preferred Securities in certificated
form will not be issued in exchange for the global certificates. See "Book-Entry
Issuance" in the accompanying Prospectus.
 
    A global security shall be exchangeable for Preferred Securities registered
in the names of persons other than DTC or its nominee only if (i) DTC notifies
the Issuer that it is unwilling or unable to continue as a depository for such
global security and no successor depository shall have been appointed, or if at
any time DTC ceases to be a clearing agency registered under the Exchange Act,
at a time when DTC is required to be so registered to act as such depository,
(ii) USB in its sole discretion determines that such global security shall be so
exchangeable, or (iii) there shall have occurred and be continuing a Debenture
Event of Default with respect to the Junior Subordinated Debentures and holders
of at least a majority in Liquidation Amount of Preferred Securities notify the
Administrative Trustees in writing that the continuation of the book-entry
system is no longer in the best interest of holders of the Preferred Securities.
Any global security that is exchangeable pursuant to the preceding sentence
shall be exchangeable for definitive certificates registered in such names as
DTC shall direct. It is expected that such instructions will be based upon
directions received by DTC from its Participants (as defined in the accompanying
Prospectus) with
 
                                      S-21
<PAGE>
respect to ownership of beneficial interests in such global security. In the
event that Preferred Securities are issued in definitive form, such Preferred
Securities will be in denominations of $25 and integral multiples thereof and
may be transferred or exchanged at the offices described below.
 
    Payments on Preferred Securities represented by a global security will be
made to DTC, as the depositary for the Preferred Securities. In the event
Preferred Securities are issued in certificated form, the Redemption Price and
Distributions will be payable, the transfer of the Preferred Securities will be
registrable, and Preferred Securities will be exchangeable for Preferred
Securities of other denominations of a like aggregate principal amount, at the
corporate trust offices of the Property Trustee in New York, New York, or at the
offices of any paying agent or transfer agent appointed by the Administrative
Trustees, provided that payment of any Distribution may be made at the option of
the Administrative Trustees by check mailed to the address of the persons
entitled thereto or by wire transfer. In addition, if the Preferred Securities
are issued in certificated form, the record dates for payment of Distributions
will be the first day of the month preceding the month in which the relevant
Distribution payment is scheduled to be paid. For a description of DTC and the
terms of the depositary arrangements relating to payments, transfers, voting
rights, redemptions and other notices and other matters, see "Book-Entry
Issuance" in the accompanying Prospectus.
 
                CERTAIN TERMS OF JUNIOR SUBORDINATED DEBENTURES
 
GENERAL
 
    The following summary of certain terms and provisions of the Junior
Subordinated Debentures supplements the description of the terms and provisions
of the Junior Subordinated Debentures set forth in the accompanying Prospectus
under the heading "Description of Junior Subordinated Debentures" to which
description reference is hereby made. The Junior Subordinated Debentures will be
issued under the Indenture. The following summary of the terms and provisions of
the Junior Subordinated Debentures and the Indenture does not purport to be
complete and is subject to, and is qualified in its entirety by reference to,
the Indenture, which has been filed as an exhibit to the Registration Statement
of which this Prospectus Supplement and the accompanying Prospectus forms a
part, and to the Trust Indenture Act. The Indenture is qualified under the Trust
Indenture Act. Whenever particular defined terms of the Indenture are referred
to herein, such defined terms are incorporated herein or therein by reference.
 
    Concurrently with the issuance of the Preferred Securities, the Issuer will
invest the proceeds thereof, together with the consideration paid by USB for the
Common Securities, in Junior Subordinated Debentures issued by USB. The Junior
Subordinated Debentures will be issued as unsecured debt under the Indenture.
 
    The Junior Subordinated Debentures will bear interest at the annual rate of
7.20% of the principal amount thereof, payable quarterly in arrears on the first
day of January, April, July and October of each year (each, an "Interest Payment
Date"), commencing July 1, 1998, and at the Stated Maturity to the person in
whose name each Junior Subordinated Debenture is registered, subject to certain
exceptions, at the close of business on the Business Day next preceding such
Interest Payment Date. It is anticipated that, until the liquidation, if any, of
the Issuer, each Junior Subordinated Debenture will be held in the name of the
Property Trustee in trust for the benefit of the holders of the Preferred
Securities. The amount of interest payable for any period will be computed on
the basis of a 360-day year of twelve 30-day months. If any Interest Payment
Date would otherwise fall on a day that is not a Business Day, then such
Interest Payment Date shall be postponed to the next day that is a Business Day
(and without any interest or other payment in respect of any such delay), except
that, if such Business Day falls in the next succeeding calendar year, such
Interest Payment Date shall be the immediately preceding Business Day, in each
case payments will be made with the same force and effect as if made on the date
such payment was originally payable. Accrued interest that is not paid on the
applicable Interest Payment Date will bear additional interest on the amount
thereof (to the extent permitted by law) at the rate per annum of 7.20% thereof,
 
                                      S-22
<PAGE>
compounded quarterly from the relevant Interest Payment Date. The term
"interest" as used herein shall include quarterly interest payments, interest on
quarterly interest payments not paid on the applicable Interest Payment Date and
Additional Sums, as applicable. Notwithstanding anything to the contrary set
forth above, if the Stated Maturity falls on a day that is not a Business Day,
the payment of principal and interest will be paid on the next succeeding
Business Day, with the same force and effect as if made on such Stated Maturity
and no interest on such payments will accrue from and after the Stated Maturity.
 
    The Junior Subordinated Debentures will mature on April 1, 2028. USB will
also have the right to extend the maturity of the Junior Subordinated
Debentures, whether or not the Issuer has been terminated and the Junior
Subordinated Debentures have been distributed to holders of the Preferred
Securities, to a date no later than the 49th anniversary of the initial issuance
of the Preferred Securities, provided that USB can extend the maturity only if
at the time such election is made and at the time of such extension (i) USB is
not in bankruptcy, otherwise insolvent or in liquidation, (ii) USB is not in
default in the payment of any interest or principal on the Junior Subordinated
Debentures, (iii) the Issuer is not in arrears on payments of Distributions on
the Preferred Securities and no deferred Distributions are accumulated and (iv)
the Junior Subordinated Debentures are rated not less than BBB- by Standard &
Poor's Ratings Services or not less than Baa3 by Moody's Investor Service, Inc.
or the equivalent by any other nationally recognized statistical rating
organization. The Junior Subordinated Debentures will be issued as a series of
junior subordinated deferrable interest debentures under the Indenture.
 
    The Junior Subordinated Debentures will be unsecured and will rank junior
and be subordinate in right of payment to all Senior Debt of USB, the amount of
which is unlimited. See "Description of Junior Subordinated
Debentures--Subordination" in the accompanying Prospectus. Because USB is a
holding company, the right of USB to participate in any distribution of assets
of any of the subsidiaries, including U.S. Bank National Association, upon any
such subsidiaries' liquidation or reorganization or otherwise (and thus the
ability of holders of the Preferred Securities to benefit indirectly from such
distribution), is subject to the prior claims of creditors of that subsidiary,
except to the extent that USB may itself be recognized as a creditor of that
subsidiary. Accordingly, the Junior Subordinated Debentures and the Guarantee
will be effectively subordinated to all existing and future liabilities of the
subsidiaries, and holders of Junior Subordinated Debentures and beneficiaries of
the Guarantee should look only to the assets of USB for payments on the Junior
Subordinated Debentures or under the Guarantee. The Indenture does not limit the
incurrence or issuance of other secured or unsecured debt of USB, including
Senior Debt, whether under the Indenture or any existing or other indenture that
USB may enter into in the future or otherwise. See "Description of Junior
Subordinated Debentures--Subordination" in the accompanying Prospectus.
 
OPTION TO DEFER INTEREST PAYMENT PERIOD
 
    So long as no Debenture Event of Default has ocucrred and is continuing, USB
has the right under the Indenture at any time during the term of the Junior
Subordinated Debentures to defer the payment of interest at any time or from
time to time for a period not exceeding 20 consecutive quarterly periods (each
such period an "Extension Period"), provided that no Extension Period may extend
beyond the Stated Maturity of the Junior Subordinated Debentures. At the end of
such Extension Period, USB must pay all interest then accrued and unpaid
(together with interest thereon at the annual rate of 7.20%, compounded
quarterly from the relevant Interest Payment Date, to the extent permitted by
applicable law). During an Extension Period, interest will continue to accrue
and holders of Junior Subordinated Debentures (or holders of the Preferred
Securities while such series is outstanding) will be required to accrue interest
income for United States federal income tax purposes. See "Certain Federal
Income Tax Consequences-- Interest Income and Original Issue Discount."
 
    During any such Extension Period, USB may not and may not permit any
subsidiary of USB to (i) declare or pay any dividends or distributions on, or
redeem, purchase, acquire or make a liquidation payment with respect to, any of
USB's capital stock or (ii) make any payment of principal, interest or
 
                                      S-23
<PAGE>
premium, if any, on or repay, repurchase or redeem any debt securities of USB
(including other series of Junior Subordinated Debentures) that rank PARI PASSU
with or junior in interest to the Junior Subordinated Debentures or (iii) make
any guarantee payments with respect to any guarantee by USB of the debt
securities of any subsidiary of USB if such guarantee ranks PARI PASSU with or
junior in interest to the Junior Subordinated Debentures (other than (a)
dividends or distributions in capital stock of USB, (b) any declaration of a
dividend in connection with the implementation of a stockholders' rights plan,
or the issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto, (c) payments under the
Guarantee, and (d) purchases of common stock related to the issuance of common
stock or rights under any of USB's benefit plans for its directors, officers or
employees). Prior to the termination of any such Extension Period, USB may
further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed 20 consecutive quarters or to extend
beyond the Stated Maturity. Upon the termination of any such Extension Period
and the payment of all interest then accrued and unpaid (together with interest
thereon at the rate of 7.20% per annum, compounded quarterly from the interest
payment date for such interest, to the extent permitted by applicable law), USB
may elect to begin a new Extension Period subject to the above requirements. No
interest shall be due and payable during an Extension Period, except at the end
thereof. USB must give the Property Trustee, the Administrative Trustees and the
Indenture Trustee notice of its election of any Extension Period at least one
Business Day prior to the earlier of (i) the date the Distributions on the
Preferred Securities would have been payable except for the election to begin or
extend such Extension Period or (ii) the date the Administrative Trustees are
required to give notice to the New York Stock Exchange, Nasdaq National Market
or any applicable stock exchange or automated quotation system on which the
Preferred Securities are then listed or quoted or to the holders of the
Preferred Securities of the record date or the date such Distributions are
payable, but in any event not less than one Business Day prior to such record
date. The Indenture Trustee shall give notice of USB's election to begin or
extend a new Extension Period to the holders of the Junior Subordinated
Debentures, and the Administrative Trustees will give notice of USB's election
to the holders of the Preferred Securities. There is no limitation on the number
of times that USB may elect to begin an Extension Period. See "Description of
the Junior Subordinated Debentures--Option to Defer Interest Payments" in the
accompanying Prospectus.
 
    Distributions on the Preferred Securities will be deferred by the Issuer
during any such Extension Period. See "Certain Terms of Preferred
Securities--Distributions." For a description of certain federal income tax
consequences and special considerations applicable to any such Junior
Subordinated Debentures, see "Certain Federal Income Tax Consequences."
 
ADDITIONAL SUMS
 
    If the Issuer is required to pay any additional taxes, duties or other
governmental charges as a result of a Tax Event, USB will pay as Additional Sums
on the Junior Subordinated Debentures such amounts as shall be required so that
the Distributions payable by the Issuer shall not be reduced as a result of any
such additional taxes, duties or other governmental charges.
 
REDEMPTION
 
    Subject to USB having received prior approval of the Federal Reserve, if
then required under applicable capital guidelines or policies of the Federal
Reserve, the Junior Subordinated Debentures are redeemable prior to maturity at
the option of USB (i) on or after April 1, 2003, in whole at any time or in part
from time to time, or (ii) at any time in whole (but not in part), upon the
occurrence and during the continuance of a Tax Event, an Investment Company
Event or a Capital Treatment Event, in each case at a redemption price equal to
100% of the principal amount of the Junior Subordinated Debentures so redeemed,
together with any accrued and unpaid interest to the date fixed for redemption.
 
                                      S-24
<PAGE>
    Notice of any redemption will be mailed at least 30 but not more than 60
days before the redemption date to each holder of Junior Subordinated Debentures
to be redeemed at such holder's registered address. Unless USB defaults in
payment of the redemption price, on and after the redemption date interest
ceases to accrue on such Junior Subordinated Debentures or portions thereof
called for redemption.
 
    If the Issuer is required to pay additional taxes, duties or other
governmental charges as a result of a Tax Event, USB will pay as additional
amounts on the Junior Subordinated Debentures the Additional Sums.
 
    The Junior Subordinated Debentures will not be subject to any sinking fund.
 
DISTRIBUTION OF JUNIOR SUBORDINATED DEBENTURES
 
    As described under "Certain Terms of Preferred Securities--Liquidation of
the Issuer and Distribution of Junior Subordinated Debentures to Holders," under
certain circumstances involving the termination of the Issuer, the Junior
Subordinated Debentures may be distributed to the holders of the Preferred
Securities in exchange therefor upon liquidation of the Issuer after
satisfaction of liabilities to creditors of the Issuer as provided by applicable
law. If distributed to holders of the Preferred Securities in liquidation, the
Junior Subordinated Debentures will initially be issued in the form of one or
more global securities and DTC, or any successor depositary for the Preferred
Securities, will act as depositary for the Junior Subordinated Debentures. It is
anticipated that the depositary arrangements for the Junior Subordinated
Debentures would be substantially identical to those in effect for the Preferred
Securities. If the Junior Subordinated Debentures are distributed to the holders
of Preferred Securities in exchange therefor upon the liquidation of the Issuer,
USB will use its best efforts to list the Junior Subordinated Debentures on the
New York Stock Exchange or such other stock exchanges or automated quotation
system, if any, on which the Preferred Securities are then listed or quoted.
There can be no assurance as to the market price of any Junior Subordinated
Debentures that may be distributed to the holders of Preferred Securities.
 
CONDITIONAL RIGHT TO REDEEM UPON A TAX EVENT, INVESTMENT COMPANY EVENT OR
  CAPITAL TREATMENT EVENT
 
    If a Tax Event, Investment Company Event or Capital Treatment Event occurs
and either (i) in the opinion of counsel to USB experienced in such matters,
there would in all cases, after effecting the termination of the Issuer and the
distribution of the Junior Subordinated Debentures to the holders of the
Preferred Securities in exchange therefor upon liquidation of the Issuer, be
more than an insubstantial risk that an Adverse Tax Consequence (as defined in
"Risk Factors--Tax Event Redemption, Investment Company Event Redemption or
Capital Treatment Event Redemption") would continue to exist, (ii) in the
reasonable determination of USB, there would in all cases, after effecting the
termination of the Issuer and the distribution of the Junior Subordinated
Debentures to the holders of the Preferred Securities in exchange therefor upon
liquidation of the Issuer, be more than an insubstantial risk that USB will not
be entitled to treat an amount equal to the Liquidation Amount of the Preferred
Securities as "Tier 1 Capital" (or the then equivalent thereof) for purposes of
the capital adequacy guidelines of the Federal Reserve, as then in effect and
applicable to USB, or (iii) Junior Subordinated Debentures are not held by the
Issuer, then USB shall have the right to redeem the Junior Subordinated
Debentures, in whole but not in part, at any time within 90 days following the
occurrence of a Tax Event, Investment Company Event or Capital Treatment Event
at a redemption price equal to 100% of the principal amount thereof plus accrued
and unpaid interest thereon to the date of redemption. See "Certain Terms of
Preferred Securities--Redemption" and "--Liquidation of Issuer and Distribution
of Junior Subordinated Debentures to Holders" and "Certain Terms of Junior
Subordinated Debentures--General."
 
                                      S-25
<PAGE>
REGISTRATION OF JUNIOR SUBORDINATED DEBENTURES
 
    The Junior Subordinated Debentures will be registered in the name of the
Issuer. In the event that the Junior Subordinated Debentures are distributed to
holders of Preferred Securities, it is anticipated that the depositary and other
arrangements for the Junior Subordinated Debentures will be substantially
identical to those in effect for the Preferred Securities. See "Certain Terms of
Preferred Securities--Registration of Preferred Securities."
 
COVENANTS OF USB
 
    USB will covenant in the Indenture, as to the Junior Subordinated
Debentures, that if and so long as (i) the Issuer is the holder of all the
Junior Subordinated Debentures, (ii) a Tax Event in respect of the Issuer has
occurred and is continuing and (iii) USB has elected, and has not revoked such
election, to pay Additional Sums (as defined under "Description of Capital
Securities--Redemption" in the accompanying Prospectus) in respect of the
Preferred Securities, USB will pay to the Issuer such Additional Sums. USB will
also covenant, as to the Junior Subordinated Debentures, (i) to maintain
directly or indirectly 100% ownership of the Common Securities, provided that
certain successors which are permitted pursuant to the Indenture may succeed to
USB's ownership of the Common Securities, (ii) not to voluntarily terminate,
wind up or liquidate the Issuer, except upon prior approval of the Federal
Reserve if then so required under applicable capital guidelines or policies of
the Federal Reserve, and except (a) in connection with a distribution of Junior
Subordinated Debentures to the holders of the Preferred Securities in
liquidation of the Issuer or (b) in connection with certain mergers,
consolidations, or amalgamations permitted by the Trust Agreement and (iii) to
use its reasonable efforts, consistent with the terms and provisions of the
Trust Agreement, to cause the Issuer to be treated as a grantor trust and not as
an association taxable as a corporation for United States federal income tax
purposes.
 
                           CERTAIN TERMS OF GUARANTEE
 
    The Guarantee Agreement will be executed and delivered by USB concurrently
with the issuance of the Preferred Securities for the benefit of the holders of
the Preferred Securities. Wilmington Trust Company will act as Guarantee Trustee
under the Guarantee Agreement for the purposes of compliance with the Trust
Indenture Act, and the Guarantee as described in this section will be qualified
as an Indenture under the Trust Indenture Act. The following summary of certain
provisions of the Guarantee does not purport to be complete and is subject to,
and qualified in its entirety by reference to, all of the provisions of the
Guarantee Agreement, including the definitions therein of certain terms, and the
Trust Indenture Act. The form of the Guarantee has been filed as an exhibit to
the Registration Statement of which this Prospectus Supplement and the
accompanying Prospectus forms a part. The Guarantee Trustee will hold the
Guarantee for the benefit of the holders of the Preferred Securities.
 
    The Guarantee guarantees to the holders of Preferred Securities the
following payments (the "Guarantee Payments") with respect to the Preferred
Securities, to the extent not paid by or on behalf of the Issuer: (i) any
accumulated and unpaid Distributions required to be paid on the Preferred
Securities, to the extent that the Issuer has funds on hand available therefor
at such time, (ii) the Redemption Price with respect to any Preferred Securities
called for redemption, to the extent that the Issuer has funds on hand available
therefor at such time, and (iii) upon a voluntary or involuntary dissolution,
winding up or liquidation of the Issuer (unless the Junior Subordinated
Debentures are distributed to holders of the Preferred Securities), the lesser
of (a) the Liquidation Distribution and (b) the amount of assets of the Issuer
remaining available for distribution to holders of Preferred Securities after
satisfaction of liabilities to creditors of the Issuer as required by applicable
law. USB's obligation to make a Guarantee Payment may be satisfied by direct
payment of the required amounts by USB to the holders of the Preferred
Securities or by causing the Issuer to pay such amounts to such holders. USB's
obligation to make a Guarantee Payment is subordinate to the right of payment of
Senior Debt of USB.
 
                                      S-26
<PAGE>
    The holders of not less than a majority in aggregate Liquidation Amount of
the Trust Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Guarantee Trustee in
respect of the Guarantee or to direct the exercise of any trust power conferred
upon the Guarantee Trustee under the Guarantee. Any holder of Trust Securities
may institute a legal proceeding directly against USB to enforce its rights
under the Guarantee without first instituting a legal proceeding against the
Issuer, the Guarantee Trustee or any other person or entity. If USB were to
default on its obligation to pay amounts payable under the Junior Subordinated
Debentures, the Issuer would lack funds for the payment of Distributions or
amounts payable on redemption of the Trust Securities or otherwise, and, in such
event, holders of the Preferred Securities would not be able to rely upon the
Guarantee for payment of such amounts. Instead, if an event of default under the
Indenture shall have occurred and be continuing and such event is attributable
to the failure of USB to pay interest on or principal of the Junior Subordinated
Debentures on the applicable payment date, then a holder of Preferred Securities
may institute a Direct Action against USB pursuant to the terms of the Indenture
for enforcement of payment to such holder of the principal of or interest on
such Junior Subordinated Debentures having a principal amount equal to the
aggregate Liquidation Amount of the Preferred Securities of such holder. In
connection with such Direct Action, USB will have a right of set-off under the
Indenture to the extent of any payment made by USB to such holder of Preferred
Securities in the Direct Action. Except as described herein, holders of
Preferred Securities will not be able to exercise directly any other remedy
available to the holders of the Junior Subordinated Debentures or assert
directly any other rights in respect of the Junior Subordinated Debentures. See
"Description of Guarantees" in the accompanying Prospectus. The Trust Agreement
provides that each holder of Trust Securities by acceptance thereof agrees to
the provisions of the Guarantee and the Indenture.
 
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    In the opinion of Dorsey & Whitney LLP, tax counsel to USB ("Counsel"), the
following summary accurately describes the material United States federal income
tax consequences that may be relevant to the purchase, ownership and disposition
of Preferred Securities. Unless otherwise stated, this summary deals only with
Preferred Securities held as capital assets by United States Persons (defined
below) who purchase the Preferred Securities upon original issuance at their
original offering price. As used herein, a "United States Person" means a person
that is (i) a citizen or resident of the United States, (ii) a corporation,
partnership or other entity treated as a corporation or a partnership for United
States federal income tax purposes created or organized in or under the laws of
the United States, any state thereof or the District of Columbia (unless, in the
case of a partnership, Treasury regulations provide otherwise), (iii) an estate
whose income is subject to United States federal income tax regardless of its
source, or (iv) a trust if a court within the United States is able to exercise
primary supervision over the administration of the trust and one or more United
States persons have the authority to control all substantial decisions of the
trust. Notwithstanding the preceding sentence, to the extent provided in
Treasury regulations, certain trusts in existence on August 20, 1996, and
treated as United States persons prior to such date, that elect to continue to
be treated as United States persons will also be United States Persons. The tax
treatment of holders may vary depending on their particular situation. This
summary does not address all the tax consequences that may be relevant to a
particular holder or to holders who may be subject to special tax treatment,
such as banks, real estate investment trusts, regulated investment companies,
insurance companies, dealers in securities or currencies, tax-exempt investors
or foreign investors. In addition, this summary does not include any description
of any alternative minimum tax consequences or the tax laws of any state, local
or foreign government that may be applicable to a holder of Preferred
Securities. This summary is based on the Code, the Treasury regulations
promulgated thereunder (the "Regulations") and administrative and judicial
interpretations thereof, as of the date hereof, all of which are subject to
change, possibly on a retroactive basis.
 
    The following discussion does not discuss the tax consequences that might be
relevant to persons that are not United States Persons ("non-United States
Persons"). Non-United States Persons should consult
 
                                      S-27
<PAGE>
their own tax advisors as to the specific United States federal income tax
consequences of the purchase, ownership and disposition of Preferred Securities.
 
    The authorities on which this summary is based are subject to various
interpretations and the opinions of Counsel are not binding on the Internal
Revenue Service ("Service") or the courts, either of which could take a contrary
position. Moreover, no rulings have been or will be sought from the Service with
respect to the transactions described herein. Accordingly, there can be no
assurance that the Service will not challenge the opinions expressed herein or
that a court would not sustain such a challenge.
 
    HOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE TAX
CONSEQUENCES TO THEM OF THE PURCHASE, OWNERSHIP AND DISPOSITION OF THE PREFERRED
SECURITIES, INCLUDING THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN, AND
OTHER TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN UNITED STATES FEDERAL OR
OTHER TAX LAWS. FOR A DISCUSSION OF THE POSSIBLE REDEMPTION OF THE PREFERRED
SECURITIES UPON THE OCCURRENCE OF CERTAIN TAX EVENTS, SEE "DESCRIPTION OF
CAPITAL SECURITIES--REDEMPTION" IN THE ACCOMPANYING PROSPECTUS.
 
CLASSIFICATION OF THE ISSUER
 
    In connection with the issuance of the Preferred Securities, Counsel is of
the opinion that, under current law and assuming compliance with the terms of
the Trust Agreement, and based on certain facts and assumptions, the Issuer will
be classified as a grantor trust and not as an association taxable as a
corporation for United States federal income tax purposes. As a result, each
beneficial owner of the Preferred Securities (a "Securityholder") will be
treated as owning an undivided beneficial interest in the Junior Subordinated
Debentures. Accordingly, each Securityholder will be required to include in its
gross income its PRO RATA share of the interest income or original issue
discount that is paid or accrued on the Junior Subordinated Debentures. See
"--Interest Income and Original Issue Discount." No amount included in income
with respect to the Preferred Securities will be eligible for the dividends
received deduction.
 
INTEREST INCOME AND ORIGINAL ISSUE DISCOUNT
 
    The Company intends to take the position that the Junior Subordinated
Debentures will be classified for United States federal income tax purposes as
indebtedness of the Company under current law, and, by acceptance of a Preferred
Security, each holder covenants to treat the Junior Subordinated Debentures as
indebtedness and the Preferred Securities as evidence of an indirect beneficial
ownership interest in the Junior Subordinated Debentures. Except as set forth
below, stated interest on the Junior Subordinated Debentures generally will be
included in income by a Securityholder at the time such interest income is paid
or accrued in accordance with such Securityholder's regular method of tax
accounting.
 
    USB believes that, under the applicable Regulations, the Junior Subordinated
Debentures will not be considered to have been issued with "original issue
discount" ("OID") within the meaning of Section 1273(a) of the Code. If,
however, USB exercises its right to defer payments of interest on the Junior
Subordinated Debentures, the Junior Subordinated Debentures will become OID
instruments at such time and all Securityholders will be required to accrue the
stated interest on the Junior Subordinated Debentures on a daily basis during
the Extension Period, even though USB will not pay such interest until the end
of the Extension Period, and even though some Securityholders may use the cash
method of tax accounting. Moreover, thereafter the Junior Subordinated
Debentures will be taxed as OID instruments for as long as they remain
outstanding. Thus, even after the end of the Extension Period, all
Securityholders would be required to continue to include the stated interest on
the Junior Subordinated Debentures in income on a daily economic accrual basis,
regardless of their method of tax accounting and possibly in advance of receipt
of the cash attributable to such interest income. Under the OID economic accrual
rules, a Securityholder would accrue an amount of interest income each year that
approximates the
 
                                      S-28
<PAGE>
stated interest payments called for under the Junior Subordinated Debentures,
and actual cash payments of interest on the Junior Subordinated Debentures would
not be reported separately as taxable income.
 
    The Regulations described above have not yet been addressed in any rulings
or other interpretations by the Service, and it is possible that the Service
could take a contrary position. If the Service were to assert successfully that
the stated interest on the Junior Subordinated Debentures was OID regardless of
whether USB exercises its right to defer payments of interest on such
debentures, all Securityholders would be required to include such stated
interest in income on a daily economic accrual basis as described above.
 
DISTRIBUTION OF JUNIOR SUBORDINATED DEBENTURES TO HOLDERS OF PREFERRED
  SECURITIES
 
    Under current law, a distribution by the Issuer of the Junior Subordinated
Debentures as described under the caption "Certain Terms of Preferred
Securities--Liquidation of the Issuer and Distribution of Junior Subordinated
Debentures of Holders" will be non-taxable and will result in the Securityholder
receiving directly its PRO RATA share of the Junior Subordinated Debentures
previously held indirectly through the Issuer, with a holding period and
aggregate tax basis equal to the holding period and aggregate tax basis such
Securityholder had in its Preferred Securities before such distribution.
However, if there should be a change in law (including a change in legal
interpretation) which would cause the Issuer to be subject to United States
federal income tax with respect to income accrued or received on the Junior
Subordinated Debentures, the distribution of Junior Subordinated Debentures to
Securityholders by the Issuer would be a taxable event to the Issuer and each
Securityholder, and a Securityholder would recognize gain or loss as if the
Securityholder had exchanged its Preferred Securities for the Junior
Subordinated Debentures it received upon the liquidation of the Issuer. A
Securityholder would recognize interest income in respect of Junior Subordinated
Debentures received from the Issuer in the manner described under "--Interest
Income and Original Issue Discount."
 
SALES OR REDEMPTION OF PREFERRED SECURITIES
 
    Gain or loss will be recognized by a Securityholder on a sale of Preferred
Securities (including a redemption for cash) in an amount equal to the
difference between the amount realized (which for this purpose, will exclude
amounts attributable to accrued interest or OID not previously included in
income) and the Securityholder's adjusted tax basis in the Preferred Securities
sold or so redeemed. Gain or loss recognized by a Securityholder on Preferred
Securities will generally be taxable as short-term, mid-term or long-term
capital gain or loss depending on whether the Preferred Securities have been
held for not more than 12 months, 12 months or more but not more than 18 months,
or for more than 18 months, respectively. Amounts attributable to accrued
interest with respect to a Securityholder's PRO RATA share of the Junior
Subordinated Debentures not previously included in income will be taxable as
ordinary income.
 
BACKUP WITHHOLDING TAX AND INFORMATION REPORTING
 
    The amount of OID accrued on the Preferred Securities held of record by
United States Persons (other than corporations and other exempt
Securityholders), if any, will be reported to the Service. "Backup" withholding
at a rate of 31% will apply to payments of interest to non-exempt United States
Persons unless the Securityholder furnishes its taxpayer identification number
in the manner prescribed in applicable Regulations, certifies that such number
is correct, certifies as to no loss of exemption from backup withholding and
meets certain other conditions. Any amounts withheld from a Securityholder under
the backup withholding rules will be allowed as a refund or a credit against
such Securityholder's United States federal income tax liability, provided the
required information is furnished to the Service.
 
                                      S-29
<PAGE>
POSSIBLE TAX LAW CHANGES AFFECTING THE PREFERRED SECURITIES
 
    There can be no assurance that future legislative proposals or final
legislation will not affect the ability of the Company to deduct interest on the
Junior Subordinated Debentures. Congress and the Clinton Administration have
from time to time considered proposals that would deny an issuer a deduction for
United States income tax purposes for the payment of interest on instruments
with characteristics similar to the Junior Subordinated Debentures. Such
proposals have been considered in connection with recent legislation, including
the recently enacted Taxpayer Relief Act of 1997 ("the Relief Act"). Although no
such proposals have been included in the final provisions of recent legislation,
including the Relief Act, there can be no assurance that future legislation will
not adversely affect the tax treatment of the Junior Subordinated Debentures,
potentially on a retroactive basis. Such a change could give rise to a Tax
Event, which may permit USB to cause a redemption of the Preferred Securities.
See "Certain Terms of Preferred Securities--Redemption" and "Certain Terms of
Junior Subordinated Debentures--Redemption."
 
                              ERISA CONSIDERATIONS
 
    A fiduciary of a pension, profit-sharing or other employee benefit plan
subject to ERISA should consider the fiduciary standards of ERISA in the context
of the plan's particular circumstances before authorizing an investment in the
Preferred Securities. Among other factors, the fiduciary should consider whether
such an investment is in accordance with the documents governing the plan and
whether an investment is appropriate for the plan in view of its overall
investment policy and the composition and diversification of its portfolio.
Other provisions of ERISA and the Code prohibit an employee benefit plan subject
to either ERISA or Section 4975 of the Code (which generally includes individual
retirement accounts and so-called "Keogh" plans) from engaging in certain
transactions involving "plan assets" with parties which are "parties in
interest" under ERISA or "disqualified persons" under the Code with respect to
the plan. Therefore, a fiduciary of an employee benefit plan should also
consider whether an investment in the Preferred Securities might constitute or
give rise to a prohibited transaction under ERISA and the Code.
 
    If the assets of the Issuer were deemed to be plan assets of employee
benefit plans that are holders of the Preferred Securities (including holders
who are not employee benefit plans themselves but are investing "plan assets" of
an employee benefit plan), the plan's investment in the Preferred Securities
might be deemed to constitute a delegation under ERISA of the duty to manage
plan assets by an ERISA plan fiduciary investing in Preferred Securities, and
certain transactions involving the operation of the Issuer might be deemed to
constitute prohibited transactions under ERISA and the Code. For example,
extensions of credit between USB and the Issuer (as represented by the
Subordinated Debentures and the Guarantee) would likely be prohibited by ERISA
and the Code, unless exemptive relief were available under an applicable
administrative exemption (see below).
 
    The U.S. Department of Labor (the "DOL") has issued a regulation with regard
to whether the underlying assets of an entity in which employee benefit plans
acquire equity interests would be deemed to be plan assets. The regulation
provides that the underlying assets of an entity will not be considered to be
plan assets if the interests of the entity acquired by the employee benefit plan
are "publicly-offered securities"--that is, they are (1) widely held (i.e.,
owned by more than 100 investors independent of USB and of each other), (2)
freely transferable and (3) sold as part of an offering pursuant to an effective
registration statement under the Securities Act and timely registered under
Section 12(b) or 12(g) of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"). It is expected that the Preferred Securities will meet the
criteria of "publicly-offered securities" above. The Underwriters expect that
the Preferred Securities will be held by at least 100 independent investors at
the conclusion of the offering. There are no restrictions imposed on the
transfer of the Preferred Securities and the Preferred Securities will be sold
as part of an offering pursuant to an effective registration statement under the
Securities Act, and will be timely registered under the Exchange Act.
 
                                      S-30
<PAGE>
    Even if the assets of the Issuer were deemed to be "plan assets" of employee
benefit plans that are holders of the Preferred Securities, there are five class
exemptions issued by the DOL which could apply to except certain transactions
involving assets of the Issuer from the prohibited transaction provisions of
ERISA and the Code--Prohibited Transaction Exemption 84-14, for certain
transactions determined by qualified professional asset managers, Prohibited
Transaction Exemption 90-1, for certain transactions involving insurance company
pooled separate accounts, Prohibited Transaction Exemption 91-38, for certain
transactions involving bank collective investment funds, Prohibited Transaction
Exemption 95-60, for certain transactions involving insurance company general
accounts, and Prohibited Transaction Exemption 96-23, for certain transactions
determined by in-house asset managers.
 
    Even if the assets of the Issuer are not deemed "plan assets" of employee
benefit plans that hold Preferred Securities, USB might be considered a party in
interest or a disqualified person with respect to certain such employee benefit
plans by reason of pre-existing relationships, such as plans for which USB, or
an affiliate serves as trustee. Therefore, before such employee benefit plans
purchase Preferred Securities, they should determine that one of the class
exemptions referred to in the preceding paragraph or any other exemption from
the prohibited transaction rules under ERISA and the Code is applicable to their
purchase and holding of the Preferred Securities.
 
    Due to the complexity of these rules and the penalties imposed upon persons
involved in prohibited transactions, it is important that an employee benefit
plan considering the purchase of Preferred Securities consult with its counsel
regarding the consequences under ERISA of the acquisition and ownership of
Preferred Securities. Employee benefit plans which are governmental plans (as
defined in Section 3(32) of ERISA) and certain church plans (as defined in
Section 3(33) of ERISA) generally are not subject to ERISA requirements or the
prohibited transaction provisions of the Code.
 
                                      S-31
<PAGE>
                                  UNDERWRITING
 
    Subject to the terms and conditions set forth in the U.S. Bancorp Standard
Provisions (Capital Securities) (March 25, 1998) and in the Underwriting
Agreement dated March 25, 1998 (collectively, the "Underwriting Agreement"), USB
and the Issuer have agreed that the Issuer will sell to each of the underwriters
named below (the "Underwriters"), and each of the Underwriters, for which
Merrill Lynch, Pierce, Fenner & Smith Incorporated, Piper Jaffray Inc., Dain
Rauscher Incorporated, Morgan Stanley and Co. Incorporated, Prudential
Securities Inc. and Smith Barney Inc. are acting as representatives, has
severally agreed to purchase from the Issuer, the respective number of Preferred
Securities set forth opposite its name below.
 
<TABLE>
<CAPTION>
                                                                                NUMBER OF
                                                                                PREFERRED
          UNDERWRITERS                                                          SECURITIES
                                                                            ------------------
<S>                                                                         <C>
Merrill Lynch, Pierce, Fenner & Smith
          Incorporated....................................................        1,650,000
Piper Jaffray Inc.........................................................        1,630,000
Dain Rauscher Incorporated................................................        1,630,000
Morgan Stanley & Co. Incorporated.........................................        1,630,000
Prudential Securities Incorporated........................................        1,630,000
Smith Barney Inc..........................................................        1,630,000
BT Alex. Brown Incorporated...............................................          140,000
Robert W. Baird & Co. Incorporated........................................          140,000
Bear, Stearns & Co. Inc...................................................          140,000
CIBC Oppenheimer Corp.....................................................          140,000
Cowen & Company...........................................................          140,000
Donaldson, Lufkin & Jenrette Securities Corporation.......................          140,000
A.G. Edwards & Sons, Inc..................................................          140,000
EVEREN Securities, Inc....................................................          140,000
Goldman, Sachs & Co.......................................................          140,000
Legg Mason Wood Walker, Incorporated......................................          140,000
Lehman Brothers Inc.......................................................          140,000
J.P. Morgan Securities Inc................................................          140,000
Raymond James & Associates, Inc...........................................          140,000
The Robinson-Humphrey Company, LLC........................................          140,000
Tucker Anthony Incorporated...............................................          140,000
US Clearing Corp..........................................................          140,000
Wheat First Securities, Inc...............................................          140,000
Advest, Inc...............................................................           70,000
Blaylock & Partners, L.P..................................................           70,000
J.C. Bradford & Co........................................................           70,000
D.A. Davidson & Co........................................................           70,000
Fahnestock & Co. Inc......................................................           70,000
First Albany Corporation..................................................           70,000
First of Michigan Corporation.............................................           70,000
Gibraltar Securities Co...................................................           70,000
Gruntal & Co., L.L.C......................................................           70,000
Interstate/ Johnson Lane Corporation......................................           70,000
Janney Montgomery Scott Inc...............................................           70,000
Josephthal & Co. Inc......................................................           70,000
Kirpatrick, Pettis, Smith, Polian Inc.....................................           70,000
McDonald & Company Securities, Inc........................................           70,000
Mesirow Financial, Inc....................................................           70,000
</TABLE>
 
                                      S-32
<PAGE>
<TABLE>
<CAPTION>
                                                                                NUMBER OF
                                                                                PREFERRED
          UNDERWRITERS                                                          SECURITIES
                                                                            ------------------
<S>                                                                         <C>
Morgan Keegan & Company, Inc..............................................           70,000
The Ohio Company..........................................................           70,000
Olde & Co., Incorporated..................................................           70,000
Pryor, McClendon, Counts & Co., Inc.......................................           70,000
Roney & Co., LLC..........................................................           70,000
Scott & Stringfellow, Inc.................................................           70,000
Stephens Inc..............................................................           70,000
Stifel, Nicolaus & Company, Incorporated..................................           70,000
Stone & Youngberg.........................................................           70,000
TD Securities (USA) Inc...................................................           70,000
Trilon International Inc..................................................           70,000
                                                                            ------------------
          Total...........................................................       14,000,000
                                                                            ------------------
                                                                            ------------------
</TABLE>
 
    In the Underwriting Agreement, the Underwriters have agreed, subject to the
terms and conditions set forth therein, to purchase all of the Preferred
Securities offered hereby if any such Preferred Securities are purchased.
 
    The Underwriters propose to offer the Preferred Securities in part directly
to the public initially at the public offering price set forth on the cover page
of this Prospectus Supplement and in part to certain securities dealers at such
price less a concession not in excess of $.50 per Preferred Security. The
Underwriters may allow and such dealers may reallow a concession not in excess
of $.25 per Preferred Security to certain other brokers and dealers. After the
public offering, the initial public offering price, concession and reallowance
and other selling terms may be varied by the Underwriters.
 
    USB and the Issuer have granted the Underwriters an option, exercisable
within 30 days after the date of this Prospectus Supplement, to purchase up to
an additional 2,100,000 Preferred Securities at the public offering price set
forth on the cover page of this Prospectus Supplement. The Underwriters may
exercise such option only with the prior consent of USB and the Issuer and only
for the purpose of covering any over-allotments in the sale of the 14,000,000
Preferred Securities offered hereby. The over-allotment option may be exercised
for fewer than all of the Preferred Securities subject to such option.
 
    In view of the fact that the proceeds from the sale of the Preferred
Securities will be used to purchase the Junior Subordinated Debentures issued by
USB, the Underwriting Agreement provides that USB will pay as compensation for
the Underwriters arranging the investment therein of such proceeds an amount of
$.7875 per Preferred Security for the accounts of the several Underwriters.
 
    During the period of 30 days from the date of this Prospectus Supplement,
neither the Issuer nor USB will, without the prior written consent of the
Underwriters, directly or indirectly, sell, offer to sell, grant any option for
the sale of, or otherwise dispose of, any Preferred Securities, any security
convertible into or exchangeable into or exercisable for Preferred Securities or
Junior Subordinated Debentures or any debt securities substantially similar to
the Junior Subordinated Debentures or equity securities substantially similar to
the Preferred Securities (except for the Junior Subordinated Debentures and the
Preferred Securities offered hereby).
 
    The Preferred Securities have been approved for listing, subject to notice
of issuance, on the New York Stock Exchange. Trading of the Preferred Securities
on the New York Stock Exchange is expected to commence within a 30-day period
after the initial delivery of the Preferred Securities. The Underwriters have
advised USB and the Issuer that they intend to make a market in the Preferred
Securities prior to commencement of trading on the New York Stock Exchange. The
Underwriters will have no obligation to make a market in the Preferred
Securities, however, and may cease market making activities, if commenced, at
any time.
 
                                      S-33
<PAGE>
    Prior to this offering there has been no public market for the Preferred
Securities. In order to meet one of the requirements for listing the Preferred
Securities on the New York Stock Exchange, the Underwriters will undertake to
sell lots of 100 or more Preferred Securities to a minimum of 400 beneficial
holders.
 
    In connection with this offering and in compliance with applicable law and
industry practice, the Underwriters may over-allot or effect transactions which
stabilize, maintain or otherwise affect the market price of the Preferred
Securities at levels above those which might otherwise prevail in the open
market, including by entering stabilizing bids. A stabilizing bid means the
placing of any bid, or the effecting of any purchase, for the purpose of
pegging, fixing or maintaining the price of a security.
 
    In general, purchases of a security for the purpose of stabilization could
cause the price of the security to be higher than it might be in the absence of
such purchases.
 
    Neither USB, the Issuer, nor any of the Underwriters makes any
representation or prediction as to the direction or magnitude of any effect that
the transactions described above may have on the price of the Preferred
Securities. In addition, neither USB, the Issuer, nor any of the Underwriters
makes any representation that the Underwriters will engage in such transactions
or that such transactions once commenced, will not be discontinued without
notice.
 
    On December 15, 1997, USB and Piper Jaffray, the parent company of Piper
Jaffray Inc., one of the Underwriters, announced that they had entered into a
definitive agreement whereby USB will acquire Piper Jaffray for $730 million.
The transaction will be accounted for as a purchase, is subject to shareholder
and regulatory approvals, and is expected to close in the second quarter of
1998. This Prospectus Supplement and the related Prospectus may be used by
direct or indirect wholly owned subsidiaries of USB, including Piper Jaffray
Inc., in connection with offers and sales related to secondary market
transactions in the Preferred Securities. Such subsidiaries may act as principal
or agent in such transactions. Such sales will be made at prices related to
prevailing market prices at the time of sale. The Preferred Securities offered
hereby are being oferred pursuant to Rule 2810 of the National Association of
Securities Dealers Conduct Rules.
 
    Certain of the Underwriters or their affiliates have provided from time to
time, and expect to provide in the future, investment or commercial banking
services to USB and its affiliates, for which such Underwriters or their
affiliates have received or will receive customary fees and commission.
 
    Each of USB and the Issuer has agreed to indemnify the Underwriters and
their respective controlling persons against certain liabilities, including
liabilities under the Securities Act, or to contribute to payments the
Underwriters may be required to make in respect thereof.
 
                             VALIDITY OF SECURITIES
 
    Certain matters of Delaware law relating to the validity of the Preferred
Securities, the enforceability of the Trust Agreement and the formation of the
Issuer will be passed upon by Richards, Layton & Finger, P.A., Wilmington,
Delaware, special counsel to USB and the Issuer. The validity of the Guarantee
and the Junior Subordinated Debentures will be passed upon for the Company by
Dorsey & Whitney LLP, Minneapolis, Minnesota, counsel to the Company. Certain
legal matters in connection with this offering will be passed upon for the
Underwriters by Davis Polk & Wardwell, New York, New York. Dorsey & Whitney LLP
and Davis Polk & Wardwell will rely on the opinions of Richards, Layton &
Finger, P.A., as to matters of Delaware law. Certain matters relating to United
States federal income tax considerations will be passed upon for the Company by
Dorsey & Whitney LLP.
 
                                      S-34
<PAGE>
- ------------------------------------------------
                                ------------------------------------------------
- ------------------------------------------------
                                ------------------------------------------------
 
    NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS SUPPLEMENT OR THE PROSPECTUS IN CONNECTION WITH THE OFFER MADE BY
THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS AND, IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
BY THE COMPANY OR THE UNDERWRITERS. THIS PROSPECTUS SUPPLEMENT AND THE
PROSPECTUS DO NOT CONSTITUTE AN OFFER OR SOLICITATION BY ANYONE IN ANY
JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED, OR IN WHICH
THE PERSON MAKING SUCH OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO, OR TO
ANYONE TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE
DELIVERY OF THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS NOR ANY SALE MADE
HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THE
INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE
HEREOF.
 
                             ---------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
                             PROSPECTUS SUPPLEMENT
 
Prospectus Summary........................................................   S-5
  The Company.............................................................   S-5
  The Issuer..............................................................   S-5
  Recent Developments.....................................................   S-6
  The Offering............................................................   S-7
  Risk Factors............................................................   S-9
Risk Factors..............................................................  S-10
Use of Proceeds...........................................................  S-16
Accounting Treatment......................................................  S-16
Capitalization............................................................  S-17
The Company...............................................................  S-17
Issuer....................................................................  S-18
Certain Terms of Preferred Securities.....................................  S-18
Certain Terms of Junior Subordinated Debentures...........................  S-22
Certain Terms of Guarantee................................................  S-26
Certain Federal Income Tax Consequences...................................  S-27
ERISA Considerations......................................................  S-30
Underwriting..............................................................  S-32
Validity of Securities....................................................  S-34
 
                                   PROSPECTUS
Available Information.....................................................     3
Incorporation of Certain Documents by Reference...........................     4
U.S. Bancorp..............................................................     5
The Issuers...............................................................     5
Use of Proceeds...........................................................     6
Ratio of Earnings to Fixed Charges........................................     6
Description of Junior Subordinated Debentures.............................     7
Description of Capital Securities.........................................    18
Book-Entry Issuance.......................................................    29
Description of Guarantees.................................................    31
Relationship Among the Capital Securities, the Corresponding Junior
  Subordinated Debentures and the Guarantees..............................    33
Plan of Distribution......................................................    35
Validity of Securities....................................................    36
Experts...................................................................    36
</TABLE>
 
          [LOGO]
 
                                   14,000,000
                              PREFERRED SECURITIES
 
                                 USB CAPITAL II
 
                             7.20% TRUST ORIGINATED
                      PREFERRED SECURITIES(SM) ("TOPRSSM")
                            (LIQUIDATION AMOUNT $25
                            PER PREFERRED SECURITY)
 
                     FULLY AND UNCONDITIONALLY GUARANTEED,
                            AS DESCRIBED HEREIN, BY
 
                                  U.S. BANCORP
 
                                ----------------
 
                             PROSPECTUS SUPPLEMENT
 
                            ------------------------
 
                              MERRILL LYNCH & CO.
 
                               PIPER JAFFRAY INC.
 
                           DAIN RAUSCHER INCORPORATED
 
                           MORGAN STANLEY DEAN WITTER
 
                       PRUDENTIAL SECURITIES INCORPORATED
 
                              SALOMON SMITH BARNEY
 
                                 MARCH 25, 1998
 
                         (SM)"Trust Originated Preferred Securities" and "TOPrS"
 
are service marks of Merrill Lynch & Co.
- ------------------------------------------------
                                ------------------------------------------------
- ------------------------------------------------
                                ------------------------------------------------
<PAGE>
                 [This page has been intentionally left blank]
<PAGE>
PROSPECTUS
 
                                 $2,124,000,000
 
                                  U.S. Bancorp
 
                         Junior Subordinated Deferrable
                              Interest Debentures
 
                                 USB Capital II
                                USB Capital III
                                 USB Capital IV
                                 USB Capital V
 
                  Capital Securities fully and unconditionally
                      guaranteed, as described herein, by
 
                                  U.S. Bancorp
 
    U.S. Bancorp, a Delaware corporation ("USB" or the "Company"), may from time
to time offer in one or more series or issuances its junior subordinated
deferrable interest debentures (the "Junior Subordinated Debentures"). The
Junior Subordinated Debentures will be unsecured and subordinate and junior in
right of payment to all Senior Debt (as defined in "Description of Junior
Subordinated Debentures--Subordination") of
USB. If provided in an accompanying Prospectus Supplement, USB will have the
right to defer payments of
interest on any series of Junior Subordinated Debentures by extending the
interest payment period thereon at any
time or from time to time for such number of consecutive interest payment
periods (which shall not extend
beyond the Stated Maturity (as defined herein) of the Junior Subordinated
Debentures) with respect to each
deferral period as may be specified in such Prospectus Supplement (each, an
"Extension Period"). See
"Description of Junior Subordinated Debentures--Option to Extend Interest
Payment Date".
 
    USB Capital II, USB Capital III, USB Capital IV and USB Capital V, each a
trust formed under the laws of
the State of Delaware (each, an "Issuer," and collectively, the "Issuers"), may
severally offer, from time to
time, capital securities (the "Capital Securities") representing preferred
beneficial interests in such Issuer. USB
will be the owner of the common securities (the "Common Securities" and,
together with the Capital Securities,
the "Trust Securities") of each Issuer. The payment of periodic cash
distributions ("Distributions") with respect
to the Capital Securities of each Issuer and payments on liquidation or
redemption with respect to such Capital
Securities, in each case out of funds held by such Issuer, are each irrevocably
guaranteed by USB to the extent
described herein (each, a "Guarantee"). See "Description of Guarantees". The
obligations of USB under each
Guarantee will be subordinate and junior in right of payment to all Senior Debt
of USB. Concurrently with the
issuance by an Issuer of its Capital Securities, such Issuer will invest the
proceeds thereof and any contributions
made in respect of the Common Securities in a corresponding series of USB's
Junior Subordinated Debentures
 
(CONTINUED ON NEXT PAGE)
                              -------------------
    THESE SECURITIES ARE NOT DEPOSITS OR OTHER OBLIGATIONS OF A BANK AND ARE
            NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION
                       OR ANY OTHER GOVERNMENTAL AGENCY.
                              -------------------
<PAGE>
    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
    AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
       SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMIS-
         SION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.
           ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                              -------------------
 
               THE DATE OF THIS PROSPECTUS IS FEBRUARY 17, 1998.
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
 
the "Corresponding Junior Subordinated Debentures") with terms corresponding to
the terms of that Issuer's Capital Securities (the "Related Capital
Securities"). The Corresponding Junior Subordinated Debentures will
be the sole assets of each Issuer, and payments under the Corresponding Junior
Subordinated Debentures and the related Expense Agreement (as defined herein)
will be the only revenue of each Issuer. If provided in an accompanying
Prospectus Supplement, USB may, upon receipt of approval of the Federal Reserve
(if such approval is then required), redeem the Corresponding Junior
Subordinated Debentures (and cause the redemption of the Trust Securities) or
may terminate each Issuer and cause the Corresponding Junior Subordinated
Debentures to be distributed to the holders of Capital Securities in liquidation
of their interests in such Issuer.
See "Description of Capital Securities--Liquidation Distribution Upon
Termination".
 
    Holders of the Capital Securities will be entitled to receive preferential
cumulative cash Distributions accumulating from the date of original issuance
and payable periodically as specified in an accompanying Prospectus Supplement.
If provided in an accompanying Prospectus Supplement, USB will have the right to
defer payments of interest on any series of Corresponding Junior Subordinated
Debentures by extending the interest payment period thereon at any time or from
time to time for one or more Extension Periods (which shall not extend beyond
the Stated Maturity of the Corresponding Junior Subordinated Debentures). If
interest payments are so deferred, Distributions on the Related Capital
Securities will also be deferred and USB will not be permitted, subject to
certain exceptions set forth herein, to declare or pay any cash distributions
with respect to USB's capital stock or debt securities that rank PARI PASSU with
or junior to the Corresponding Junior Subordinated Debentures. During an
Extension Period, Distributions will continue to accumulate (and the Capital
Securities will accumulate additional Distributions thereon at the rate per
annum set forth in the related Prospectus Supplement). See "Description of
Capital Securities--Distributions".
 
    Taken together, USB's obligations under each series of Junior Subordinated
Debentures, the Indenture, the related Trust Agreement, the related Expense
Agreement, the related Guarantee and the related Guarantee Agreement (each, as
defined herein), in the aggregate, provide a full, irrevocable and unconditional
guarantee of payments of distributions and other amounts due on the related
series of Capital Securities. See "Relationship Among the Capital Securities,
the Corresponding Junior Subordinated Debentures and the Guarantees--Full and
Unconditional Guarantee".
 
    The Junior Subordinated Debentures and Capital Securities may be offered in
amounts, at prices and on terms to be determined at the time of offering;
provided, however, the aggregate initial public offering price of
all Junior Subordinated Debentures (other than Corresponding Junior Subordinated
Debentures) and Capital
Securities (including the Corresponding Junior Subordinated Debentures) issued
pursuant to the Registration Statement of which this Prospectus forms a part
shall not exceed $2,124,000,000. Certain specific terms of the Junior
Subordinated Debentures or Capital Securities in respect of which this
Prospectus is being delivered will be described in an accompanying Prospectus
Supplement, including without limitation and where applicable and to the extent
not set forth herein, (a) in the case of Junior Subordinated Debentures, the
specific designation, aggregate principal amount, denominations, Stated Maturity
(including any provisions for the shortening or extension thereof), interest
payment dates, interest rate (which may be fixed or variable) or method of
calculating interest, if any, applicable Extension Period or interest deferral
terms, if any, place or places where principal, premium, if any, and interest,
if any, will be payable, any terms of redemption, any sinking fund provisions,
terms for any conversion or exchange into other securities, initial offering or
purchase price, methods of distribution and any other special terms, and (b) in
the case of Capital Securities, the identity of the Issuer, specific title,
aggregate amount, stated liquidation preference, number of securities,
Distribution rate or method
of calculating such rate, applicable Extension Period or Distribution deferral
terms, if any, place or places where Distributions will be payable, any terms of
redemption, exchange, initial offering or purchase price, methods of
distribution and any other special terms.
 
    The Prospectus Supplement also will contain information, as applicable,
about certain United States Federal income tax consequences relating to the
Junior Subordinated Debentures or Capital Securities.
 
                                       2
<PAGE>
    The Junior Subordinated Debentures and Capital Securities may be sold to or
through underwriters, through dealers, remarketing firms or agents or directly
to purchasers. See "Plan of Distribution". The names of any underwriters,
dealers, remarketing firms or agents involved in the sale of Junior Subordinated
Debentures or Capital Securities in respect of which this Prospectus is being
delivered and any applicable fee, commission or discount arrangements with them
will be set forth in a Prospectus Supplement. The Prospectus Supplement will
state whether the Junior Subordinated Debentures or Capital Securities will be
listed on any national securities exchange or automated quotation system. If the
Junior Subordinated Debentures or Capital Securities are not listed on any
national securities exchange or automated quotation system, there can be no
assurance that there will be a secondary market for the Junior Subordinated
Debentures or Capital Securities.
 
    This Prospectus may not be used to consummate sales of Junior Subordinated
Debentures or Capital Securities unless accompanied by a Prospectus Supplement.
 
    No dealer, salesperson or other person has been authorized to give any
information or make any representations, other than those contained in this
Prospectus and the applicable Prospectus Supplement, and if given or made such
information or representations must not be relied upon as having been authorized
by USB or any agent, underwriter or dealer. This Prospectus and the applicable
Prospectus Supplement do not constitute an offer of any securities other than
those to which they relate, or an offer to sell or a solicitation of an offer to
buy those to which they relate, in any jurisdiction to any person to whom it is
unlawful to make such offer or solicitation in such jurisdiction. The delivery
of this Prospectus and/or the applicable Prospectus Supplement at any time does
not imply that the information herein or therein is correct as of any time
subsequent to its date.
 
    IN CONNECTION WITH AN OFFERING OF THE CAPITAL SECURITIES, CERTAIN PERSONS
MAY ENGAGE IN TRANSACTIONS THAT STABILIZE, MAINTAIN, OR OTHERWISE AFFECT
THE PRICE OF THE CAPITAL SECURITIES, INCLUDING OVER-ALLOTMENT, STABILIZING AND
SHORT-COVERING TRANSACTIONS IN SUCH CAPITAL SECURITIES AND THE IMPOSITION OF
PENALTY BIDS IN CONNECTION WITH THE OFFERING OF THE CAPITAL SECURITIES. SEE
"PLAN OF DISTRIBUTION."
 
                             AVAILABLE INFORMATION
 
    USB is subject to the informational requirements of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), and in accordance therewith, files
reports and other information with the Securities and Exchange Commission (the
"Commission"). Such reports, proxy statements and other information filed by USB
can be inspected and copied at the public reference facilities of the Commission
at 450 Fifth Street, N.W., Washington, D.C. 20549 and at the Commission's
Regional Offices at Seven World Trade Center, 13th Floor, New York, New York
10048 and Citicorp Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois 60661. Copies of such material can be obtained from the Public
Reference Section of the Commission at 450 Fifth Street, N.W., Washington, D.C.
20549 at prescribed rates. The Commission maintains a web site that contains
report, proxy and information statements and other information regarding
registrants that file electronically with the Commission. The address of the web
site is http://www.sec.gov. Reports, proxy statements and other information
concerning the Company can also be inspected at the offices of the New York
Stock Exchange, 20 Broad Street, New York, New York 10005.
 
    USB and the Issuers have filed with the Commission a Registration Statement
on Form S-3 (together with
all amendments and exhibits thereto, the "Registration Statement") under the
Securities Act of 1933, as
amended (the "Securities Act") with respect to the securities offered hereby.
This Prospectus does not contain
all the information set forth in the Registration Statement, certain portions of
which have been omitted as permitted by the rules and regulations of the
Commission. For further information with respect to USB and the securities
offered hereby, reference is made to the Registration Statement and the exhibits
and the financial statements, notes and schedules filed as a part thereof or
incorporated by reference therein, which may be inspected at the public
reference facilities of the Commission, at the addresses set forth above.
Statements made
 
                                       3
<PAGE>
in this Prospectus concerning the contents of any documents referred to herein
are not necessarily complete, and in each instance are qualified in all respects
by reference to the copy of such document filed as an exhibit to the
Registration Statement.
 
    No separate financial statements of any Issuer have been included herein.
USB and the Issuers do not consider that such financial statements would be
material to holders of the Capital Securities because each Issuer is a newly
formed special purpose entity, has no operating history or independent
operations and is not engaged
in and does not propose to engage in any activity other than holding as trust
assets the Corresponding Junior Subordinated Debentures of USB and issuing the
Trust Securities. See "The Issuers", "Description of Capital Securities",
"Description of Junior Subordinated Debentures--Corresponding Junior
Subordinated Debentures" and "Description of Guarantees". In addition, USB does
not expect that any of the Issuers will be filing reports under the Exchange Act
with the Commission.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The following documents of USB, which until August 1, 1997 was named First
Bank System, Inc., which have been filed with the Commission are hereby
incorporated by reference in this Prospectus:
 
        (a) Annual Report on Form 10-K for the year ended December 31, 1996;
 
        (b) the Quarterly Reports on Form 10-Q for the quarters ended March 31,
    1997, June 30, 1997 and September 30, 1997; and
 
        (c) two Current Reports on Form 8-K filed on March 20, 1997, and the
    Current Reports on Form 8-K filed June 24, 1997, August 1, 1997, October 1,
    1997, October 17, 1997, December 15, 1997 and January
    16, 1998.
 
    All documents filed by USB pursuant to Section 13(a), 13(c), 14 or 15(d) of
the Exchange Act subsequent
to the date of this Prospectus and prior to the termination of the offering of
the Securities shall be deemed to be incorporated by reference into this
Prospectus and to be a part hereof from the respective dates of filing of such
documents. Any statement contained herein or in a document all or any portion of
which is incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Prospectus to the
extent that a statement contained herein or in any other subsequently filed
document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any statement so modified or superseded shall not be
deemed, except as so modified or superseded, to constitute a part of this
Prospectus.
 
    USB will provide without charge to each person, including any beneficial
owner to whom this Prospectus is delivered, upon the written or oral request of
such person, a copy of any or all of the foregoing documents incorporated herein
by reference, other than certain exhibits to such documents for which the
Company may impose a copying charge. Requests for such copies should be directed
to U.S. Bancorp, 601 Second Avenue South, Minneapolis, Minnesota 55402-4302,
Attention: Investor Relations Department,
telephone number (612) 973-2263.
 
    Unless otherwise indicated, currency amounts in this Prospectus and any
Prospectus Supplement are stated in United States dollars ("$" or "dollars").
 
                              -------------------
 
    Notice to North Carolina purchasers: the Commissioner of Insurance of the
State of North Carolina has not approved or disapproved this offering nor has
the Commissioner passed upon the accuracy or adequacy of this prospectus.
 
                              -------------------
 
                                       4
<PAGE>
                                  U.S. BANCORP
 
    U.S. Bancorp ("USB" or the "Company") is a multi-state bank holding company,
registered under the
Bank Holding Company Act of 1956, as amended (the "BHCA"), with its headquarters
in Minneapolis, Minnesota. On August 1, 1997, First Bank System, Inc. of
Minneapolis ("FBS") acquired U. S. Bancorp, of Portland, Oregon and assumed the
U.S. Bancorp name. The combined organization is the fifteenth largest U.S.
commercial bank holding company based on assets. At December 31, 1997, USB and
its consolidated subsidiaries had consolidated assets of $71.3 billion,
consolidated deposits of $49.0 billion, and shareholders' equity of $5.9
billion.
 
    USB operates eight banks and eleven trust companies serving millions of
customers principally in seventeen states from the Midwest to the Rocky
Mountains to the Pacific Northwest. USB also has various other subsidiaries
engaged in financial services.
 
    The banking subsidiaries of USB are engaged in general retail and commercial
banking business. These subsidiaries provide a wide variety of services to
individuals, businesses, industry, institutional organizations, governmental
entities and other financial institutions. Depository services include checking
and savings accounts and certificates of deposit and other time deposits.
Additional services include commercial lending, financing of import/export
trade, foreign exchange and retail and institutional brokerage services.
Treasury management and receivable lockbox collection are provided for corporate
customers. The banking and trust company subsidiaries of USB also provide a full
range of fiduciary products and services to individuals, estates, foundations,
business corporations and charitable organizations. Other subsidiaries of USB
provide financial services related to banking, including lease financing,
discount brokerage, investment advisory services and insurance agency and credit
life insurance services.
 
    On December 15, 1997, USB and Piper Jaffray Companies Inc. ("Piper Jaffray")
announced that they had entered into a definitive agreement whereby USB will
acquire Piper Jaffray for $730 million. The cash transaction will be accounted
for as a purchase, is subject to shareholder and regulatory approvals, and is
expected to close in the second quarter of 1998.
 
    USB was incorporated under Delaware law in 1929 and has functioned as a
multi-bank holding company since that time. Its principal executive offices are
located at 601 Second Avenue South, Minneapolis, Minnesota 55402-4302 (telephone
(612) 973-1111)). For further information concerning USB, see the USB documents
incorporated by reference herein as described under "Incorporation of Certain
Documents by Reference."
 
                                  THE ISSUERS
 
    Each Issuer is a statutory business trust formed under Delaware law pursuant
to (i) a trust agreement executed by USB, as depositor of the Issuer, the
Delaware Trustee (as defined herein) of such Issuer and the Issuer Trustees (as
defined herein) of such Issuer and (ii) the filing of a certificate of trust
with the Delaware Secretary of State. Each trust agreement will be amended and
restated in its entirety (each, as so amended and restated, a "Trust Agreement")
substantially in the form filed as an exhibit to the Registration Statement of
which this Prospectus forms a part. Each Trust Agreement will be qualified as an
indenture under the Trust Indenture Act of 1939, as amended (the "Trust
Indenture Act"). Each Issuer exists for the exclusive purposes of (i) issuing
and selling its Trust Securities, (ii) using the proceeds from the sale of such
Trust Securities to acquire a corresponding series of Corresponding Junior
Subordinated Debentures issued by USB, and (iii) engaging in only those other
activities necessary, convenient or incidental thereto. Accordingly, the
Corresponding Junior Subordinated Debentures and the right to reimbursement of
expenses under the related Expense Agreement will be the sole assets of each
Issuer, and payments under the Corresponding Junior Subordinated Debentures and
the related Expense Agreement will be the sole revenue of each Issuer.
 
    All of the Common Securities of each Issuer will be owned by USB. The Common
Securities of an Issuer will rank PARI PASSU, and payments will be made thereon
PRO RATA, with the Capital Securities of such Issuer, except that upon the
occurrence and continuance of an event of default under a Trust Agreement
resulting from
a Debenture Event of Default (as defined herein), the rights of USB as holder of
the Common Securities to payment in respect of Distributions and payments upon
liquidation, redemption or otherwise will be subordinated
 
                                       5
<PAGE>
to the rights of the holders of the Capital Securities of such Issuer. See
"Description of Capital Securities-- Subordination of Common Securities". USB
will acquire Common Securities in an aggregate liquidation amount equal to not
less than 3% of the total capital of each Issuer.
 
    Unless otherwise specified in the applicable Prospectus Supplement, each
Issuer has a term of approximately
55 years, but may terminate earlier as provided in the applicable Trust
Agreement. Each Issuer's business and affairs are conducted by its trustees,
each appointed by USB as holder of the Common Securities. The trustees for each
Issuer will be Wilmington Trust Company, as the Property Trustee (the "Property
Trustee"), and as the Delaware Trustee (the "Delaware Trustee"), and three
individual trustees (the "Administrative Trustees") who are employees or
officers of or affiliated with USB (collectively, the "Issuer Trustees").
Wilmington Trust Company, as Property Trustee, will act as sole indenture
trustee under each Trust Agreement for purposes of compliance with the Trust
Indenture Act. Wilmington Trust Company will also act as trustee under the
Guaranty Agreements and the Indenture (each as defined herein). See "Description
of Guarantees" and "Description of Junior Subordinated Debentures". The holder
of the Common Securities of an Issuer, or the holders of a majority in
liquidation preference of the Related Capital Securities, if a Debenture Event
of Default under the Trust Agreement for such Issuer has occurred and is
continuing, will be entitled to appoint, remove or replace the Property Trustee
and/or the Delaware Trustee for such Issuer. In no event will the holders of the
Capital Securities have the right to vote to appoint, remove or replace the
Administrative Trustees; such voting rights are vested
exclusively in the holder of the Common Securities. The duties and obligations
of each Issuer Trustee are governed
by the applicable Trust Agreement. USB will pay all fees and expenses related to
each Issuer and the offering of the Capital Securities and will pay, directly or
indirectly, all ongoing costs, expenses and liabilities of each Issuer.
 
    The principal executive office of each Issuer is: c/o U.S. Bancorp, 601
Second Avenue South, Minneapolis, Minnesota 55402-4302 and the telephone number
is (612) 973-1111.
 
                                USE OF PROCEEDS
 
    All of the proceeds from the sale of the Capital Securities will be invested
by the Issuer in Junior Subordinated Debentures. Except as otherwise set forth
in the applicable Prospectus Supplement, USB intends
to use the proceeds from the sale of its Junior Subordinated Debentures
(including Corresponding Junior Subordinated Debentures) for general corporate
purposes, including working capital, capital expenditures, investments in or
loans to subsidiaries, refinancing of debt, including outstanding commercial
paper and other short-term bank indebtedness, redemption of shares of its
outstanding common and preferred stock, the satisfaction of other obligations or
for such other purposes as may be specified in the applicable Prospectus
Supplement. A more detailed description of the use of proceeds of any specific
offering will be set forth in the Prospectus Supplement pertaining to such
offering.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
    The following table sets forth the ratio of earnings to fixed charges of USB
for the respective periods indicated.
<TABLE>
<CAPTION>
                                                                                     YEAR ENDED DECEMBER 31,
                                                                      -----------------------------------------------------
                                                                        1992       1993       1994       1995       1996
                                                                      ---------  ---------  ---------  ---------  ---------
<S>                                                                   <C>        <C>        <C>        <C>        <C>
Ratio of Earnings to Fixed Charges:
    Excluding interest on deposits..................................       2.72       3.89       2.64       2.95       3.60
    Including interest on deposits..................................       1.40       1.70       1.53       1.66       1.89
 
<CAPTION>
                                                                      NINE MONTHS
                                                                         ENDED
                                                                      -----------
                                                                        9/30/97
                                                                      -----------
<S>                                                                   <C>
Ratio of Earnings to Fixed Charges:
    Excluding interest on deposits..................................        2.51
    Including interest on deposits..................................        1.55
</TABLE>
 
    For purposes of computing the ratio of earnings to fixed charges, earnings
represent income before income taxes and cumulative effect of changes in
accounting principles and fixed charges (excluding capitalized interest). Fixed
charges, excluding interest on deposits, include interest (other than on
deposits but including capitalized interest) and the portion deemed
representative of the interest factor of rents. Fixed charges, including
interest
on deposits, include all interest (including capitalized interest) and the
portion deemed representative of the interest factor of rents.
 
                                       6
<PAGE>
                 DESCRIPTION OF JUNIOR SUBORDINATED DEBENTURES
 
    The Junior Subordinated Debentures are to be issued in one or more series
under a Junior Subordinated Indenture dated November 15, 1996, as supplemented
from time to time (as so supplemented, the "Indenture"), between USB and
Wilmington Trust Company, as trustee (the "Debenture Trustee"). This summary of
certain terms and provisions of the Junior Subordinated Debentures,
Corresponding Junior Subordinated Debentures and the Indenture does not purport
to be complete and is subject to, and is qualified in its entirety by reference
to,
the Indenture, the form of which is filed as an exhibit to the Registration
Statement of which this Prospectus forms a part, and to the Trust Indenture Act
of 1939, as amended (the "Trust Indenture Act"). The Indenture is qualified
under the Trust Indenture Act. Whenever particular defined terms of the
Indenture (as supplemented or amended from time to time) are referred to herein
or in a Prospectus Supplement, such defined terms are incorporated herein or
therein by reference.
 
GENERAL
 
    Each series of Junior Subordinated Debentures will rank PARI PASSU with all
other series of Junior Subordinated Debentures and will be unsecured and
subordinate and junior in right of payment to the extent and in the manner set
forth in the Indenture to all Senior Debt of USB. See "--Subordination". USB is
a non-operating holding company and almost all of the operating assets of USB
and its consolidated subsidiaries are owned by such subsidiaries. USB relies
primarily on dividends from such subsidiaries to meet its obligations. USB is a
legal entity separate and distinct from its banking and non-banking affiliates.
The principal sources of USB's income are dividends, interest and fees from U.S.
Bank National Association and the other banking and non-banking affiliates. The
bank subsidiaries of USB, including U.S. Bank National Association (the
"Banks"), are subject to certain restrictions imposed by federal law on any
extensions of credit to, and certain other transactions with, USB and certain
other affiliates, and on investments in stock or other securities thereof. Such
restrictions prevent USB and such other affiliates from borrowing from the Banks
unless the loans are secured
by various types of collateral. Further, such secured loans, other transactions
and investments by any of the
Banks are generally limited in amount as to USB and as to each of such other
affiliates to 10% of such Bank's capital and surplus and as to USB and all of
such other affiliates to an aggregate of 20% of such Bank's capital and surplus.
In addition, payment of dividends to USB by the subsidiary banks is subject to
ongoing review by banking regulators and is subject to various statutory
limitations and in certain circumstances requires approval by banking regulatory
authorities. Because USB is a holding company, the right of USB to participate
in any distribution of assets of any subsidiary upon such subsidiary's
liquidation or reorganization or otherwise, is subject to the prior claims of
creditors of the subsidiary, except to the extent USB may itself be recognized
as a creditor of that subsidiary. Accordingly, the Junior Subordinated
Debentures will be effectively subordinated to all existing and future
liabilities of USB's subsidiaries, and holders of Junior Subordinated Debentures
should look only to the assets of USB for payments on the Junior Subordinated
Debentures. Except as otherwise provided in the applicable Prospectus
Supplement, the Indenture does not limit the incurrence or issuance of other
secured or unsecured debt of USB, including the Senior Debt, whether under the
Indenture, any other indenture that USB may enter into in the future or
otherwise. See "--Subordination" and the Prospectus Supplement relating to any
offering of Securities.
 
    The Junior Subordinated Debentures will be issuable in one or more series
pursuant to an indenture or officers' certificate supplemental to the Indenture
or a resolution of USB's Board of Directors or a committee thereof.
 
    The applicable Prospectus Supplement or Prospectus Supplements will describe
the following terms of the Junior Subordinated Debentures: (1) the title of the
Junior Subordinated Debentures; (2) any limit upon the aggregate principal
amount of the Junior Subordinated Debentures; (3) the date or dates on which the
principal of
the Junior Subordinated Debentures is payable (the "Stated Maturity") or the
method of determination thereof; (4)
the rate or rates, if any, at which the Junior Subordinated Debentures shall
bear interest, the Interest Payment Dates
on which any such interest shall be payable, the right, if any, of USB to defer
or extend an Interest Payment Date,
and the Regular Record Date for any interest payable on any Interest Payment
Date or the method by which any of
 
                                       7
<PAGE>
the foregoing shall be determined; (5) the place or places where, subject to the
terms of the Indenture as described below under "Payment and Paying Agents", the
principal of and premium, if any, and interest on the Junior Subordinated
Debentures will be payable and where, subject to the terms of the Indenture as
described below under
"--Denominations, Registration and Transfer," the Junior Subordinated Debentures
may be presented for registration of transfer or exchange and the place or
places where notices and demands to or upon USB in respect
of the Junior Subordinated Debentures and the Indentures may be made ("Place of
Payment"); (6) any period or periods within or date or dates on which, the price
or prices at which and the terms and conditions upon which Junior Subordinated
Debentures may be redeemed, in whole or in part, at the option of USB or a
holder thereof; (7) the obligation or the right, if any, of USB or a holder
thereof to redeem, purchase or repay the Junior Subordinated Debentures and the
period or periods within which, the price or prices at which, the currency or
currencies (including currency unit or units) in which and the other terms and
conditions upon which the Junior Subordinated Debentures shall be redeemed,
repaid or purchased, in whole or in part, pursuant to such obligation; (8) the
denominations in which any Junior Subordinated Debentures shall be issuable if
other than denominations of $25 and any integral multiple thereof; (9) if other
than in U.S. Dollars, the currency or currencies (including currency unit or
units) in which the principal of (and premium, if any) and interest, if any, on
the Junior Subordinated Debentures shall be payable, or in which the Junior
Subordinated Debentures shall be denominated; (10) any additions, modifications
or deletions in the Events of Default or covenants of USB specified in the
Indenture with respect to the Junior Subordinated Debentures; (11) if other than
the principal amount thereof, the portion of the principal amount of Junior
Subordinated Debentures that shall be payable upon declaration of acceleration
of the maturity thereof; (12) any additions or changes to the Indenture with
respect to a series of Junior Subordinated Debentures as shall be necessary to
permit or facilitate the issuance of such series in bearer form, registrable or
not registrable as to principal, and with or without interest coupons; (13) any
index or indices used to determine the amount of payments of principal of and
premium, if any, on the Junior Subordinated Debentures and the manner in
which such amounts will be determined; (14) the terms and conditions relating to
the issuance of a temporary Global
Security representing all of the Junior Subordinated Debentures of such series
and the exchange of such temporary Global Security for definitive Junior
Subordinated Debentures of such series; (15) subject to the terms described
under "--Global Junior Subordinated Debentures", whether the Junior Subordinated
Debentures of the series shall
be issued in whole or in part in the form of one or more Global Securities and,
in such case, the Depositary for
such Global Securities, which Depositary shall be a "clearing agency" registered
under the Exchange Act; (16) the
appointment of any Paying Agent or Agents; (17) the terms and conditions of any
obligation or right of USB or a
holder to convert or exchange the Junior Subordinated Debentures into Capital
Securities; (18) the form of Trust
Agreement and Guarantee Agreement, if applicable; (19) the relative degree, if
any, to which such Junior
Subordinated Debentures of the series shall be senior to or be subordinated to
other series of such Junior
Subordinated Debentures or other indebtedness of USB in right of payment,
whether such other series of Junior
Subordinated Debentures or other indebtedness are outstanding or not; and (20)
any other terms of the Junior
Subordinated Debentures not inconsistent with the provisions of the Indenture.
 
    Junior Subordinated Debentures may be sold at a substantial discount below
their stated principal amount, bearing no interest or interest at a rate which
at the time of issuance is below market rates. Certain United States Federal
income tax consequences and special considerations applicable to any such Junior
Subordinated Debentures will be described in the applicable Prospectus
Supplement.
 
    If the purchase price of any of the Junior Subordinated Debentures is
payable in one or more foreign currencies or currency units or if any Junior
Subordinated Debentures are denominated in one or more foreign currencies or
currency units or if the principal of, premium, if any, or interest, if any, on
any Junior Subordinated Debentures is payable in one or more foreign currencies
or currency units, the restrictions, elections, certain United States Federal
income tax consequences, specific terms and other information with respect to
such issue of Junior Subordinated Debentures and such foreign currency or
currency units will be set forth in the applicable Prospectus Supplement.
 
    If any index is used to determine the amount of payments of principal of,
premium, if any, or interest on
any series of Junior Subordinated Debentures, special United States Federal
income tax, accounting and other considerations applicable thereto will be
described in the applicable Prospectus Supplement.
 
                                       8
<PAGE>
DENOMINATIONS, REGISTRATION AND TRANSFER
 
    Unless otherwise specified in the applicable Prospectus Supplement, the
Junior Subordinated Debentures will be issuable only in registered form without
coupons in denominations of $25 and any integral multiple thereof. Junior
Subordinated Debentures of any series will be exchangeable for other Junior
Subordinated Debentures of the same issue and series, of any authorized
denominations, of a like aggregate principal amount, of the same Original Issue
Date and Stated Maturity and bearing the same interest rate.
 
    Junior Subordinated Debentures may be presented for exchange as provided
above, and may be presented for registration of transfer (with the form of
transfer endorsed thereon, or a satisfactory written instrument of transfer,
duly executed), at the office of the appropriate Securities Registrar or at the
office of any transfer agent designated by USB for such purpose with respect to
any series of Junior Subordinated Debentures and referred
to in the applicable Prospectus Supplement, without service charge and upon
payment of any taxes and other governmental charges as described in the
Indenture. USB will appoint the Debenture Trustee as Securities Registrar under
the Indenture. If the applicable Prospectus Supplement refers to any transfer
agents (in addition
to the Securities Registrar) initially designated by USB with respect to any
series of Junior Subordinated Debentures, USB may at any time rescind the
designation of any such transfer agent or approve a change in the location
through which any such transfer agent acts, provided that USB maintains a
transfer agent in each Place of Payment for such series. USB may at any time
designate additional transfer agents with respect to any series
of Junior Subordinated Debentures.
 
    In the event of any redemption, neither USB nor the Debenture Trustee shall
be required to (i) issue, register the transfer of or exchange Junior
Subordinated Debentures of any series during a period beginning at the opening
of business 15 days before the day of selection for redemption of Junior
Subordinated Debentures of
that series and ending at the close of business on the day of mailing of the
relevant notice of redemption or (ii) transfer or exchange any Junior
Subordinated Debentures so selected for redemption, except, in the case of any
Junior Subordinated Debentures being redeemed in part, any portion thereof not
to be redeemed.
 
GLOBAL JUNIOR SUBORDINATED DEBENTURES
 
    The Junior Subordinated Debentures of a series may be issued in whole or in
part in the form of one or
more global junior subordinated debentures ("Global Junior Subordinated
Debentures") that will be deposited with, or on behalf of, a depositary (the
"Depositary") identified in the Prospectus Supplement relating to such series.
Global Junior Subordinated Debentures may be issued only in fully registered
form and in either temporary or permanent form. Unless and until it is exchanged
in whole or in part for the individual Junior Subordinated Debentures
represented thereby, a Global Junior Subordinated Debenture may not be
transferred except as a whole by the Depositary for such Global Junior
Subordinated Debenture to a nominee of such Depositary or by a nominee of such
Depositary to such Depositary or another nominee of such Depositary or by the
Depositary or any nominee to a successor Depositary or any nominee of such
successor.
 
    The specific terms of the depositary arrangement with respect to a series of
Junior Subordinated Debentures will be described in the Prospectus Supplement
relating to such series. USB anticipates that the following provisions will
generally apply to depositary arrangements.
 
    Upon the issuance of a Global Junior Subordinated Debenture, and the deposit
of such Global Junior Subordinated Debenture with or on behalf of the
Depositary, the Depositary for such Global Junior Subordinated Debenture or its
nominee will credit, on its book-entry registration and transfer system, the
respective principal amounts of the individual Junior Subordinated Debentures
represented by such Global Junior Subordinated Debenture to the accounts of
persons that have accounts with such Depositary ("Participants"). Such accounts
shall be designated by the dealers, underwriters or agents with respect to such
Junior Subordinated Debentures
or by USB if such Junior Subordinated Debentures are offered and sold directly
by USB. Ownership of beneficial interests in a Global Junior Subordinated
Debenture will be limited to Participants or persons that may hold interests
through Participants. Ownership of beneficial interests in such Global Junior
Subordinated Debenture will be shown on, and the transfer of that ownership will
be effected only through, records maintained by the
 
                                       9
<PAGE>
applicable Depositary or its nominee (with respect to interests of Participants)
and the records of Participants (with respect to interests of persons who hold
through Participants). The laws of some states require that certain purchasers
of securities take physical delivery of such securities in definitive form. Such
limits and such laws may impair the ability to transfer beneficial interests in
a Global Junior Subordinated Debenture.
 
    So long as the Depositary for a Global Junior Subordinated Debenture, or its
nominee, is the registered owner of such Global Junior Subordinated Debenture,
such Depositary or such nominee, as the case may be,
will be considered the sole owner or holder of the Junior Subordinated
Debentures represented by such Global Junior Subordinated Debenture for all
purposes under the Indenture governing such Junior Subordinated Debentures.
Except as provided below, owners of beneficial interests in a Global Junior
Subordinated Debenture will not be entitled to have any of the individual Junior
Subordinated Debentures of the series represented by
such Global Junior Subordinated Debenture registered in their names, will not
receive or be entitled to receive physical delivery of any such Junior
Subordinated Debentures of such series in definitive form and will not be
considered the owners or holders thereof under the Indenture.
 
    Payments of principal of (and premium, if any) and interest on individual
Junior Subordinated Debentures represented by a Global Junior Subordinated
Debenture registered in the name of a Depositary or its nominee
will be made to the Depositary or its nominee, as the case may be, as the
registered owner of the Global Junior Subordinated Debenture representing such
Junior Subordinated Debentures. None of USB, the Debenture Trustee, any Paying
Agent, or the Securities Registrar for such Junior Subordinated Debentures will
have any responsibility or liability for any aspect of the records relating to
or payments made on account of beneficial ownership interests of the Global
Junior Subordinated Debenture representing such Junior Subordinated Debentures
or for maintaining, supervising or reviewing any records relating to such
beneficial ownership interests.
 
    USB expects that the Depositary for a series of Junior Subordinated
Debentures or its nominee, upon receipt of any payment of principal, premium or
interest in respect of a permanent Global Junior Subordinated Debenture
representing any of such Junior Subordinated Debentures, immediately will credit
Participants' accounts with payments in amounts proportionate to their
respective beneficial interest in the principal amount of such Global Junior
Subordinated Debenture for such Junior Subordinated Debentures as shown on the
records of such Depositary or its nominee. USB also expects that payments by
Participants to owners of beneficial interests in such Global Junior
Subordinated Debenture held through such Participants will be governed by
standing instructions and customary practices, as is now the case with
securities held for the accounts of customers in bearer form or registered in
"street name." Such payments will be the responsibility of such Participants.
 
    Unless otherwise specified in the applicable Prospectus Supplement, if a
Depositary for a series of Junior Subordinated Debentures is at any time
unwilling, unable or ineligible to continue as depositary and a successor
depositary is not appointed by USB within 90 days, USB will issue individual
Junior Subordinated Debentures
of such series in exchange for the Global Junior Subordinated Debenture
representing such series of Junior Subordinated Debentures. In addition, USB may
at any time and in its sole discretion, subject to any limitations described in
the Prospectus Supplement relating to such Junior Subordinated Debentures,
determine not to have any Junior Subordinated Debentures of such series
represented by one or more Global Junior Subordinated Debentures and, in such
event, will issue individual Junior Subordinated Debentures of such series in
exchange for the Global Junior Subordinated Debenture or Securities representing
such series of Junior Subordinated Debentures. Further, if USB so specifies with
respect to the Junior Subordinated Debentures of a series, an owner of a
beneficial interest in a Global Junior Subordinated Debenture representing
Junior Subordinated Debentures of such series may, on terms acceptable to USB,
the Debenture Trustee and the Depositary for such Global Junior Subordinated
Debenture, receive individual Junior Subordinated Debentures of such series in
exchange for such beneficial interests, subject to any limitations described in
the Prospectus Supplement relating to such Junior Subordinated Debentures. In
any such instance, an owner of a beneficial interest in a Global Junior
Subordinated Debenture will be entitled to physical delivery of individual
Junior Subordinated Debentures of the series represented by such Global Junior
Subordinated Debenture equal in principal amount to such beneficial interest
 
                                       10
<PAGE>
and to have such Junior Subordinated Debentures registered in its name.
Individual Junior Subordinated Debentures of such series so issued will be
issued in denominations, unless otherwise specified by USB, of $25 and integral
multiples thereof.
 
PAYMENT AND PAYING AGENTS
 
    Unless otherwise indicated in the applicable Prospectus Supplement, payment
of principal of (and premium, if any) and any interest on Junior Subordinated
Debentures will be made at the office of the Debenture Trustee
in the City of New York or at the office of such Paying Agent or Paying Agents
as USB may designate from
time to time in the applicable Prospectus Supplement, except that at the option
of USB payment of any interest may be made (i), except in the case of Global
Junior Subordinated Debentures, by check mailed to the address
of the Person entitled thereto as such address shall appear in the Securities
Register or (ii) by transfer to an account maintained by the Person entitled
thereto as specified in the Securities Register, provided that proper transfer
instructions have been received by the Regular Record Date. Unless otherwise
indicated in the applicable Prospectus Supplement, payment of any interest on
Junior Subordinated Debentures will be made to the Person
in whose name such Junior Subordinated Debenture is registered at the close of
business on the Regular Record Date for such interest, except in the case of
Defaulted Interest. USB may at any time designate additional Paying Agents or
rescind the designation of any Paying Agent; however USB will at all times be
required to maintain a Paying Agent in each Place of Payment for each series of
Junior Subordinated Debentures.
 
    Any moneys deposited with the Debenture Trustee or any Paying Agent, or then
held by USB in trust, for the payment of the principal of (and premium, if any)
or interest on any Junior Subordinated Debenture and remaining unclaimed for two
years after such principal (and premium, if any) or interest has become due and
payable shall, at the request of USB, be repaid to USB and the holder of such
Junior Subordinated Debenture shall thereafter look, as a general unsecured
creditor, only to USB for payment thereof.
 
OPTION TO EXTEND INTEREST PAYMENT DATE
 
    If provided in the applicable Prospectus Supplement, USB shall have the
right at any time and from time to time during the term of any series of Junior
Subordinated Debentures to defer payment of interest for such number of
consecutive interest payment periods as may be specified in the applicable
Prospectus Supplement (each, an "Extension Period"), subject to the terms,
conditions and covenants, if any, specified in such Prospectus Supplement,
PROVIDED that such Extension Period may not extend beyond the Stated Maturity of
such series of Junior Subordinated Debentures. Certain United States Federal
income tax consequences and special considerations applicable to any such Junior
Subordinated Debentures will be described in the applicable Prospectus
Supplement.
 
REDEMPTION
 
    Unless otherwise indicated in the applicable Prospectus Supplement, Junior
Subordinated Debentures will not be subject to any sinking fund.
 
    Unless otherwise indicated in the applicable Prospectus Supplement, USB may,
at its option and subject to receipt of prior approval by the Board of Governors
of the Federal Reserve System (the "Federal Reserve") if then required under
applicable capital guidelines or policies, redeem the Junior Subordinated
Debentures of any series in whole at any time or in part from time to time. If
the Junior Subordinated Debentures of any series are
so redeemable only on or after a specified date or upon the satisfaction of
additional conditions, the applicable Prospectus Supplement will specify such
date or describe such conditions. Junior Subordinated Debentures in
denominations larger than $25 may be redeemed in part but only in integral
multiples of $25. Except as otherwise specified in the applicable Prospectus
Supplement, the redemption price for any Junior Subordinated Debenture so
redeemed shall equal any accrued and unpaid interest thereon to the redemption
date, plus the principal amount thereof.
 
    Except as otherwise specified in the applicable Prospectus Supplement, if a
Tax Event, Capital Treatment Event or Investment Company Event (as defined
below) in respect of a series of Junior Subordinated Debentures shall occur and
be continuing, USB may, at its option and subject to receipt of prior approval
by the Federal
 
                                       11
<PAGE>
Reserve if then required under applicable capital guidelines or policies, redeem
such series of Junior Subordinated Debentures in whole (but not in part) at any
time within 90 days of the occurrence of such Tax Event, at a redemption price
equal to 100% of the principal amount of such Junior Subordinated Debentures
then outstanding plus accrued and unpaid interest to the date fixed for
redemption.
 
    "Tax Event" means the receipt by USB and the applicable Issuer of an opinion
of counsel experienced in such matters to the effect that, as a result of any
amendment to, or change (including any announced prospective change) in, the
laws (or any regulations thereunder) of the United States or any political
subdivision or taxing authority thereof or therein, or as a result of any
official administrative pronouncement or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
which pronouncement or decision is announced on or after the date of issuance of
the applicable series of Junior Subordinated Debentures under the Indenture,
there is more than an insubstantial risk that (i) the Issuer is, or
will be within 90 days of the date of such opinion, subject to United States
federal income tax with respect to income received or accrued on the Junior
Subordinated Debentures, (ii) interest payable by USB on the Junior Subordinated
Debentures is not, or within 90 days of such opinion, will not be, deductible by
USB, in whole or
in part, for United States federal income tax purposes, or (iii) the Issuer is,
or will be within 90 days of the date
of the opinion, subject to more than a de minimus amount of other taxes, duties
or other governmental charges.
 
    An "Investment Company Event" means the receipt by USB and the Issuer of an
opinion of counsel experienced in such matters to the effect that, as a result
of any change in law or regulation or a change in interpretation or application
of law or regulation by any legislative body, court, governmental agency or
regulatory authority, the Issuer is or will be considered an "investment
company" that is required to be
registered under the Investment Company Act of 1940, as amended (the "Investment
Company Act"), which change becomes effective on or after the original issuance
of the Capital Securities.
 
    A "Capital Treatment Event" means the reasonable determination by USB that,
as a result of any amendment to, or change (including any announced prospective
change) in, the laws (or any regulations thereunder) of the United States or any
political subdivision thereof or therein, or as a result of any official or
administrative pronouncement or action or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
such prospective change, pronouncement or decision is announced
on or after the date of issuance of the Capital Securities, there is more than
an insubstantial risk of impairment
of USB's ability to treat the Capital Securities (or any substantial portion
thereof) as "Tier 1 capital" (or the
then equivalent thereof) for purposes of the capital adequacy guidelines of the
Federal Reserve, as then in effect and applicable to USB.
 
    Notice of any redemption will be mailed at least 30 days but not more than
60 days before the redemption date to each Holder of Junior Subordinated
Debentures to be redeemed at its registered address. Unless USB defaults in
payment of the redemption price, on and after the redemption date interest
ceases to accrue on such Junior Subordinated Debentures or portions thereof
called for redemption.
 
RESTRICTIONS ON CERTAIN PAYMENTS
 
    USB will also covenant, as to each series of Junior Subordinated Debentures,
that it will not, and will not permit any subsidiary of USB to, (i) declare or
pay any dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of USB's capital stock or (ii) make any
payment of principal, interest or premium, if any, on or repay or repurchase or
redeem any debt securities of USB (including other Junior Subordinated
Debentures) that rank PARI PASSU with or junior in interest to the Junior
Subordinated Debentures or make any guarantee payments with respect to any
guarantee by USB of the debt securities of any subsidiary of USB (including
under other Guarantees) if such guarantee ranks PARI PASSU or junior in interest
to the Junior Subordinated Debentures (other than (a) dividends or distributions
in common stock of USB, (b) any declaration of a dividend in connection with the
implementation of a stockholder's rights plan, or the issuance of stock under
any such plan in the future, or the redemption or repurchase of any such rights
pursuant thereto, (c) payments under any Guarantee and (d) purchases of common
stock related to the issuance of common stock or
 
                                       12
<PAGE>
rights under any of USB's benefit plans for its directors, officers or
employees) if at such time (i) there shall
have occurred any event of which USB has actual knowledge that (a) with the
giving of notice or the lapse of time, or both, would constitute an "Event of
Default" under the Indenture with respect to the Junior
Subordinated Debentures of such series and (b) in respect of which USB shall not
have taken reasonable steps to cure, (ii) if such Junior Subordinated Debentures
are held by an Issuer of a series of Related Capital Securities, USB shall be in
default with respect to its payment of any obligations under the Guarantee
relating to such Related Capital Securities or (iii) USB shall have given notice
of its selection of an Extension Period as provided in the Indenture with
respect to the Junior Subordinated Debentures of such series and shall not have
rescinded such notice, or such Extension Period, or any extension thereof, shall
be continuing.
 
MODIFICATION OF INDENTURE
 
    From time to time USB and the Debenture Trustee may, without the consent of
the holders of any series of Junior Subordinated Debentures, amend, waive or
supplement the Indenture for specified purposes, including, among other things,
curing ambiguities, defects or inconsistencies (provided that any such action
does not materially adversely affect the interest of the holders of any series
of Junior Subordinated Debentures or, in the case of Corresponding Junior
Subordinated Debentures, the holders of the Related Capital Securities so long
as they remain outstanding) and qualifying, or maintaining the qualification of,
the Indenture under the Trust Indenture Act. The Indenture contains provisions
permitting USB and the Debenture Trustee, with the consent
of the holders of not less than a majority in principal amount of each
outstanding series of Junior Subordinated Debentures affected, to modify the
Indenture in a manner affecting the rights of the holders of such series of the
Junior Subordinated Debentures; PROVIDED, that no such modification may, without
the consent of the holder of each outstanding Junior Subordinated Debenture so
affected, (i) change the Stated Maturity of any series of Junior Subordinated
Debentures (except as otherwise specified in the applicable Prospectus
Supplement), or reduce the principal amount thereof, or reduce the rate or
extend the time of payment of interest thereon, (ii) reduce the percentage of
principal amount of Junior Subordinated Debentures of any series, the holders of
which are required to consent to any such modification of the Indenture, (iii)
modify certain provisions of the Indenture relating to modification or waiver
except to increase the required percentage or (iv) modify the provisions with
respect to the subordination of outstanding Junior Subordinated Debentures of
any series in a manner adverse to the holders thereof, PROVIDED that, in the
case of Corresponding Junior Subordinated Debentures, so long as any of the
Related Capital Securities remain outstanding, no such modification may be made
that adversely affects
the holders of such Capital Securities in any material respect, and no
termination of the Indenture may occur,
and no waiver of any Debenture Event of Default or compliance with any covenant
under the Indenture may be effective, without the prior consent of the holders
of at least a majority of the aggregate liquidation preference of such Related
Capital Securities unless and until the principal of the Corresponding Junior
Subordinated Debentures and all accrued and unpaid interest thereon have been
paid in full and certain other conditions are satisfied.
 
    In addition, USB and the Debenture Trustee may execute, without the consent
of any holder of Junior Subordinated Debentures, any supplemental Indenture for
the purpose of creating any new series of Junior Subordinated Debentures.
 
DEBENTURE EVENTS OF DEFAULT
 
    The Indenture provides that any one or more of the following described
events with respect to a series of Junior Subordinated Debentures that has
occurred and is continuing constitutes a "Debenture Event of Default" with
respect to such series of Junior Subordinated Debentures:
 
        (i) failure for 30 days to pay any interest on such series of the Junior
    Subordinated Debentures, when due (subject to the deferral of any due date
    in the case of an Extension Period); or
 
        (ii) failure to pay any principal or premium, if any, on such series of
    Junior Subordinated Debentures when due whether at maturity, upon redemption
    by declaration or otherwise; or
 
                                       13
<PAGE>
        (iii) failure to observe or perform in any material respect certain
    other covenants contained in the Indenture for 90 days after written notice
    to USB from the Debenture Trustee or the holders of at least 25% in
    aggregate outstanding principal amount of such series of outstanding Junior
    Subordinated Debentures; or
 
        (iv) certain events in bankruptcy, insolvency or reorganization of USB.
 
    The holders of a majority in aggregate outstanding principal amount of such
series of Junior Subordinated Debentures have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
Debenture Trustee. The Debenture Trustee or the holders of not less than 25% in
aggregate outstanding principal amount of such series of Junior Subordinated
Debentures may declare the principal due
and payable immediately upon a Debenture Event of Default, and, in the case of
Corresponding Junior Subordinated Debentures, should the Debenture Trustee or
such holders of such Corresponding Junior Subordinated Debentures fail to make
such declaration, the holders of at least 25% in aggregate liquidation
preference of the Related Capital Securities shall have such right. The holders
of a majority in aggregate outstanding principal amount of such series of Junior
Subordinated Debentures may annul such declaration
and waive the default if the default (other than the non-payment of the
principal of such series of Junior Subordinated Debentures which has become due
solely by such acceleration) has been cured and a sum
sufficient to pay all matured installments of interest and principal due
otherwise than by acceleration has been deposited with the Debenture Trustee. In
the case of Corresponding Junior Subordinated Debentures, should
the holders of such Corresponding Junior Subordinated Debentures fail to annul
such declaration and waive
such default, the holders of a majority in aggregate liquidation preference of
the Related Capital Securities
shall have such right.
 
    The holders of a majority in aggregate outstanding principal amount of the
Junior Subordinated Debentures affected thereby may, on behalf of the holders of
all the Junior Subordinated Debentures, waive any past default, except a default
in the payment of principal or interest (unless such default has been cured and
a sum sufficient
to pay all matured installments of interest and principal due otherwise than by
acceleration has been deposited with the Debenture Trustee) or a default in
respect of a covenant or provision which under the Indenture cannot be modified
or amended without the consent of the holder of each outstanding Junior
Subordinated Debenture.
In the case of Corresponding Junior Subordinated Debentures, should the holders
of such Corresponding Junior Subordinated Debentures fail to annul such
declaration and waive such default, the holders of a majority in aggregate
liquidation preference of the Related Capital Securities shall have such right.
USB is required to file annually with the Debenture Trustee a certificate as to
whether or not USB is in compliance with all the conditions and covenants
applicable to it under the Indenture.
 
    In case a Debenture Event of Default shall occur and be continuing as to a
series of Corresponding Junior Subordinated Debentures, the Property Trustee
will have the right to declare the principal of and the interest on such
Corresponding Junior Subordinated Debentures, and any other amounts payable
under the Indenture, to be forthwith due and payable and to enforce its other
rights as a creditor with respect to such Corresponding Junior Subordinated
Debentures.
 
ENFORCEMENT OF CERTAIN RIGHTS BY HOLDERS OF CAPITAL SECURITIES
 
    If a Debenture Event of Default has occurred and is continuing and such
event is attributable to the failure
of USB to pay interest or principal on the related Junior Subordinated
Debentures on the date such interest or principal is otherwise payable, a holder
of Related Capital Securities may institute a legal proceeding directly against
USB for enforcement of payment to such holder of the principal of or interest on
such related Junior Subordinated Debentures having a principal amount equal to
the aggregate Liquidation Amount of the Related Capital Securities of such
holder (a "Direct Action"). USB may not amend the Indenture to remove the
foregoing right to bring a Direct Action without the prior written consent of
the holders of all of the Capital Securities. If the right to bring a Direct
Action is removed, the applicable Issuer may become subject to the reporting
obligations under the Exchange Act. USB shall have the right under the Indenture
to set-off any payment made to such holder of Capital Securities by USB in
connection with a Direct Action.
 
                                       14
<PAGE>
    The holders of the Capital Securities would not be able to exercise directly
any remedies other than those
set forth in the preceding paragraph available to the holders of the Junior
Subordinated Debentures unless there shall have been an Event of Default under
the Trust Agreement. See "Description of Capital Securities--Events of Default;
Notice".
 
CONSOLIDATION, MERGER, SALE OF ASSETS AND OTHER TRANSACTIONS
 
    The Indenture provides that USB shall not consolidate with or merge into any
other Person or convey, transfer or lease its properties and assets
substantially as an entirety to any Person, and no Person shall consolidate with
or merge into USB or convey, transfer or lease its properties and assets
substantially as an entirety to USB, unless (i) in case USB consolidates with or
merges into another Person or conveys or transfers its properties and assets
substantially as an entirety to any Person, the successor Person is organized
under the laws of the United States or any state or the District of Columbia,
and such successor Person expressly assumes USB's obligations on the Junior
Subordinated Debentures issued under the Indenture; (ii) immediately after
giving effect thereto, no Debenture Event of Default, and no event which, after
notice or lapse of time or both, would become a Debenture Event of Default,
shall have happened and be continuing; (iii) in the case of Corresponding Junior
Subordinated Debentures, such transaction is permitted under the related Trust
Agreement and the related Guarantee Agreement and does not give rise to any
breach or violation of the related Trust Agreement or the related Guarantee
Agreement, and (iv) certain other conditions as prescribed in the Indenture are
met.
 
    The general provisions of the Indenture do not afford holders of the Junior
Subordinated Debentures protection in the event of a highly leveraged or other
transaction involving USB that may adversely affect holders of the Junior
Subordinated Debentures.
 
SATISFACTION AND DISCHARGE
 
    The Indenture provides that when, among other things, all Junior
Subordinated Debentures not previously delivered to the Debenture Trustee for
cancellation (i) have become due and payable or (ii) will become due and payable
at their Stated Maturity within one year, and USB deposits or causes to be
deposited with the Debenture Trustee trust funds, in trust, for the purpose and
in an amount in the currency or currencies in which the Junior Subordinated
Debentures are payable sufficient to pay and discharge the entire indebtedness
on the Junior Subordinated Debentures not previously delivered to the Debenture
Trustee for cancellation, for the principal (and premium, if any) and interest
to the date of the deposit or to the Stated Maturity, as the case may be, then
the Indenture will cease to be of further effect (except as to USB's obligations
to pay all other sums due pursuant to the Indenture and to provide the officers'
certificates and opinions of counsel described therein), and USB will be deemed
to have satisfied and discharged the Indenture.
 
CONVERSION OR EXCHANGE
 
    If and to the extent indicated in the applicable Prospectus Supplement, the
Junior Subordinated Debentures of any series may be convertible or exchangeable
into Capital Securities or other securities. The specific terms
on which Junior Subordinated Debentures of any series may be so converted or
exchanged will be set forth in
the applicable Prospectus Supplement. Such terms may include provisions for
conversion or exchange, either mandatory, at the option of the holder, or at the
option of USB, in which case the number of shares of Capital Securities or other
securities to be received by the Holders of Junior Subordinated Debentures would
be calculated as of a time and in the manner stated in the applicable Prospectus
Supplement.
 
SUBORDINATION
 
    In the Indenture, USB has covenanted and agreed that any Junior Subordinated
Debentures issued thereunder will be subordinate and junior in right of payment
to all Senior Debt to the extent provided in the Indenture. Upon any payment or
distribution of assets to creditors upon any liquidation, dissolution, winding
up, reorganization, assignment for the benefit of creditors, marshaling of
assets or any bankruptcy, insolvency, debt restructuring or similar proceedings
in connection with any insolvency or bankruptcy proceeding of USB, the
 
                                       15
<PAGE>
holders of Senior Debt will first be entitled to receive payment in full of
principal of (and premium, if any) and interest, if any, on such Senior Debt
before the holders of Junior Subordinated Debentures or, in the case of
Corresponding Junior Subordinated Debentures, the Property Trustee on behalf of
the holders, will be entitled to receive or retain any payment in respect of the
principal of (and premium, if any) or interest, if any, on the Junior
Subordinated Debentures.
 
    In the event of the acceleration of the maturity of any Junior Subordinated
Debentures, the holders of all Senior Debt outstanding at the time of such
acceleration will first be entitled to receive payment in full of all amounts
due thereon (including any amounts due upon acceleration) before the holders of
Junior Subordinated Debentures will be entitled to receive or retain any payment
in respect of the principal of (or premium, if any) or interest, if any, on the
Junior Subordinated Debentures.
 
    No payments on account of principal (or premium, if any) or interest, if
any, in respect of the Junior Subordinated Debentures may be made if there shall
have occurred and be continuing a default in any payment with respect to Senior
Debt, or an event of default with respect to any Senior Debt resulting in the
acceleration
of the maturity thereof, or if any judicial proceeding shall be pending with
respect to any such default.
 
    "Debt" means, with respect to any person, whether recourse is to all or a
portion of the assets of such person and whether or not contingent: (i) every
obligation of such person for money borrowed; (ii) every obligation of such
person evidenced by bonds, debentures, notes or other similar instruments,
including obligations incurred in connection with the acquisition of property,
assets or businesses; (iii) every
reimbursement obligation of such person with respect to letters of credit,
bankers' acceptances or similar
facilities issued for the account of such person; (iv) every obligation of such
person issued or assumed as the deferred purchase price of property or services
(but excluding trade accounts payable or accrued liabilities arising in the
ordinary course of business); (v) every capital lease obligation of such person;
(vi) all indebtedness of
such person whether incurred on or prior to the date of the Indenture or
thereafter incurred, for claims in respect of derivative products including
interest rate, foreign exchange rate and commodity forward contracts, options
and swaps and similar arrangements; and (vii) every obligation of the type
referred to in clauses (i) through (vi) of another person and all dividends of
another person the payment of which, in either case, such person has guaranteed
or is responsible or liable, directly or indirectly, as obligor or otherwise.
 
    "Senior Debt" means the principal of (and premium, if any) and interest, if
any (including interest accruing on or after the filing of any petition in
bankruptcy or for reorganization relating to USB whether or not such
claim for post-petition interest is allowed in such proceeding), on Debt of USB
whether incurred on or prior to the date of the Indenture or thereafter
incurred, unless, in the instrument creating or evidencing such Debt or pursuant
to which such Debt is outstanding, it is provided that such obligations are not
superior in right of payment to the Junior Subordinated Debentures or to other
Debt which is PARI PASSU with, or subordinated to,
the Junior Subordinated Debentures; provided, however, that Senior Debt shall
not be deemed to include (i) any Debt of USB which when incurred and without
respect to any election under section 1111(b) of the United States Bankruptcy
Code of 1978, as amended, was without recourse to USB, (ii) any Debt of USB to
any of the Banks, (iii) Debt to any employee of USB, and (iv) any other debt
securities issued pursuant to the Indenture.
 
    USB is a non-operating holding company and almost all of the operating
assets of USB are owned by such subsidiaries. USB relies primarily on dividends
from such subsidiaries to meet its obligations for payment of principal and
interest on its outstanding debt obligations and corporate expenses. USB is a
legal entity separate and distinct from its banking and non-banking affiliates.
The principal sources of USB's income are dividends, interest and fees from U.S.
Bank National Association and the other banking and non-banking affiliates. The
Banks are subject to certain restrictions imposed by federal law on any
extensions of credit to, and certain other transactions with, USB and certain
other affiliates, and on investments in stock or other securities thereof. Such
restrictions prevent USB and such other affiliates from borrowing from the Banks
unless the loans are secured
by various types of collateral. Further, such secured loans, other transactions
and investments by any of the
Banks are generally limited in amount as to USB and as to each of such other
affiliates to 10% of such Bank's capital and surplus and as to USB and all of
such other affiliates to an aggregate of 20% of such Bank's capital
 
                                       16
<PAGE>
and surplus. In addition, payment of dividends to USB by the subsidiary banks is
subject to ongoing review by banking regulators and is subject to various
statutory limitations and in certain circumstances requires approval by banking
regulatory authorities. Accordingly, the Junior Subordinated Debentures will be
effectively subordinated to all existing and future liabilities of USB's
subsidiaries. Holders of Junior Subordinated Debentures should look only to the
assets of USB for payments of interest and principal and premium, if any.
 
    The Indenture places no limitation on the amount of additional Senior Debt
that may be incurred by USB. USB expects from time to time to incur additional
indebtedness constituting Senior Debt.
 
    The Indenture provides that the foregoing subordination provisions, insofar
as they relate to any particular issue of Junior Subordinated Debentures, may be
changed prior to such issuance. Any such change would be described in the
applicable Prospectus Supplement.
 
GOVERNING LAW
 
    The Indenture and the Junior Subordinated Debentures will be governed by and
construed in accordance with the laws of the State of New York.
 
INFORMATION CONCERNING THE DEBENTURE TRUSTEE
 
    The Debenture Trustee shall have and be subject to all the duties and
responsibilities specified with respect to an indenture trustee under the Trust
Indenture Act. Subject to such provisions, the Debenture Trustee is under no
obligation to exercise any of the powers vested in it by the Indenture at the
request of any holder of Junior Subordinated Debentures, unless offered
reasonable indemnity by such holder against the costs, expenses and liabilities
which might be incurred thereby. The Debenture Trustee is not required to expend
or risk its own funds or otherwise incur personal financial liability in the
performance of its duties if the Debenture Trustee reasonably believes that
repayment or adequate indemnity is not reasonably assured to it.
 
CORRESPONDING JUNIOR SUBORDINATED DEBENTURES
 
    The Corresponding Junior Subordinated Debentures may be issued in one or
more series of Junior Subordinated Debentures under the Indenture with terms
corresponding to the terms of a series of Related Capital Securities. In that
event, concurrently with the issuance of each Issuer's Capital Securities, such
Issuer will invest the proceeds thereof and the consideration paid by USB for
the Related Common Securities in a series of Corresponding Junior Subordinated
Debentures issued by USB to such Issuer. Each series of Corresponding Junior
Subordinated Debentures will be in the principal amount equal to the aggregate
stated Liquidation Amount of the Related Capital Securities and the Common
Securities of such Issuer and will rank PARI PASSU with all other series of
Junior Subordinated Debentures. Holders of the Related Capital Securities for a
series of Corresponding Junior Subordinated Debentures will have the rights in
connection with modifications to the Indenture or upon occurrence of Debenture
Events of Default described under "--Modification of Indenture" and "--Debenture
Events of Default", unless provided otherwise in the Prospectus Supplement for
such Related Capital Securities.
 
    Unless otherwise specified in the applicable Prospectus Supplement, if a Tax
Event in respect of an Issuer of Related Capital Securities shall occur and be
continuing, USB may, at its option and subject to prior approval by the Federal
Reserve (if then so required under applicable capital guidelines or policies)
redeem the Corresponding Junior Subordinated Debentures at any time within 90
days of the occurrence of such Tax Event, in whole but not in part, subject to
the provisions of the Indenture and whether or not such Corresponding Junior
Subordinated Debentures are then otherwise redeemable at the option of USB. The
redemption price for any Corresponding Junior Subordinated Debentures shall be
equal to 100% of the principal amount of such Corresponding Junior Subordinated
Debentures then outstanding plus accrued and unpaid interest to the date fixed
for redemption. For so long as the applicable Issuer is the holder of all the
outstanding series of Corresponding Junior Subordinated Debentures, the proceeds
of any such redemption will be used by such Issuer
 
                                       17
<PAGE>
to redeem the corresponding Trust Securities in accordance with their terms. USB
may not redeem a series of Corresponding Junior Subordinated Debentures in part
unless all accrued and unpaid interest has been paid in
full on all outstanding Corresponding Junior Subordinated Debentures of such
series for all interest periods terminating on or prior to the Redemption Date.
 
    USB will covenant in the Indenture as to each series of Corresponding Junior
Subordinated Debentures,
that if and so long as (i) the Issuer of the related series of Trust Securities
is the holder of all such Corresponding Junior Subordinated Debentures, (ii) a
Tax Event in respect of such Issuer has occurred and is continuing and (iii) USB
has elected, and has not revoked such election, to pay Additional Sums (as
defined under "Description of Capital Securities--Redemption or Exchange") in
respect of such Trust Securities, USB will pay to such Issuer such Additional
Sums. USB will also covenant, as to each series of Corresponding Junior
Subordinated Debentures, (i) to maintain directly or indirectly 100% ownership
of the Common Securities of the Issuer to which Corresponding Junior
Subordinated Debentures have been issued, provided that certain successors which
are permitted pursuant to the Indenture may succeed to USB's ownership of the
Common Securities, (ii) not to voluntarily terminate, wind-up or liquidate any
Issuer, except upon prior approval of the Federal Reserve if then so required
under applicable capital guidelines or policies of the Federal Reserve, and (a)
in connection with a distribution of Corresponding Junior Subordinated
Debentures to the holders of the Capital Securities in liquidation of such
Issuer, or (b) in connection with certain mergers, consolidations or
amalgamations permitted by the related Trust Agreement and (iii) to use its
reasonable efforts, consistent with the terms and provisions of the related
Trust Agreement, to cause such Issuer to remain classified as a grantor trust
and not as an association taxable as a corporation for United States Federal
income tax purposes.
 
                       DESCRIPTION OF CAPITAL SECURITIES
 
    Pursuant to the terms of the Trust Agreement for each Issuer, the Issuer
Trustees on behalf of such Issuer will issue the Capital Securities and the
Common Securities. The Capital Securities of a particular issue will represent
preferred beneficial interests in the Issuer thereof and the holders thereof
will be entitled to a preference in certain circumstances with respect to
Distributions and amounts payable on redemption or liquidation over the Common
Securities of such Issuer, as well as other benefits as described in the
corresponding Trust Agreement. This summary of certain provisions of the Capital
Securities and each Trust Agreement does not purport to be complete and is
subject to, and is qualified in its entirety by reference to, all the provisions
of each Trust Agreement, including the definitions therein of certain terms, and
the Trust Indenture Act. Wherever particular defined terms of a Trust Agreement
(as amended or supplemented from time to time) are referred to herein or in
a Prospectus Supplement, such defined terms are incorporated herein or therein
by reference. The form of the Trust Agreement has been filed as an exhibit to
the Registration Statement of which this Prospectus forms a part. Each of the
Issuers is a legally separate entity and the assets of one are not available to
satisfy the obligations of any of the others.
 
GENERAL
 
    The Capital Securities of an Issuer will rank PARI PASSU, and payments will
be made thereon PRO RATA, with the Common Securities of that Issuer except as
described under "--Subordination of Common Securities".
Legal title to the Corresponding Junior Subordinated Debentures will be held by
the Property Trustee in trust for the benefit of the holders of the related
Capital Securities and Common Securities. Each Guarantee Agreement executed by
USB for the benefit of the holders of an applicable Issuer's Capital Securities
(the "Guarantee" for such Capital Securities) will be a guarantee on a
subordinated basis with respect to the related Capital Securities but will not
guarantee payment of Distributions or amounts payable on redemption or
liquidation of such Capital Securities when the related Issuer does not have
funds on hand available to make such payments. See "Description of Guarantees."
 
DISTRIBUTIONS
 
    Distributions on the Capital Securities will be cumulative, will accumulate
from the date of original issuance and will be payable on such dates as
specified in the applicable Prospectus Supplement. In the event that any
 
                                       18
<PAGE>
date on which Distributions are payable on the Capital Securities is not a
Business Day (as defined below), payment of the Distribution payable on such
date will be made on the next succeeding day that is a Business
Day (and without any interest or other payment in respect to any such delay)
except that, if such Business Day is in the next succeeding calendar year,
payment of such Distribution shall be made on the immediately preceding Business
Day, in each case with the same force and effect as if made on such date (each
date on which Distributions are payable in accordance with the foregoing, a
"Distribution Date"). A "Business Day" shall mean any day other than a Saturday
or a Sunday, or a day on which banking institutions in The City of New York are
authorized or required by law or executive order to remain closed or a day on
which the corporate trust
office of the Property Trustee or the Debenture Trustee is closed for business.
 
    Each Issuer's Capital Securities represent preferred beneficial interests in
the applicable Issuer, and the Distributions on each Capital Security will be
payable at a rate specified in the Prospectus Supplement for such
Capital Securities. The amount of Distributions payable for any period will be
computed on the basis of a 360-
day year of twelve 30-day months unless otherwise specified in the applicable
Prospectus Supplement. Distributions to which holders of Capital Securities are
entitled will accumulate additional Distributions at the rate per annum if and
as specified in the applicable Prospectus Supplement. The term "Distributions"
as used herein includes any such additional Distributions unless otherwise
stated.
 
    If provided in the applicable Prospectus Supplement, USB has the right under
the Indenture, pursuant to which it will issue the Corresponding Junior
Subordinated Debentures, to defer the payment of interest at any time or from
time to time on any series of the Corresponding Junior Subordinated Debentures
for a period which will be specified in such Prospectus Supplement relating to
such series (each, an "Extension Period"), PROVIDED that no Extension Period may
extend beyond the Stated Maturity of the Corresponding Junior Subordinated
Debentures. As a consequence of any such extension, Distributions on the
corresponding Capital Securities
would be deferred (but would continue to accumulate additional Distributions
thereon at the rate per annum set forth in the Prospectus Supplement for such
Capital Securities) by the Issuer of such Capital Securities during any such
Extension Period. During such Extension Period USB may not, and may not permit
any subsidiary of USB to, (i) declare or pay any dividends or distributions on,
or redeem, purchase, acquire or make a liquidation payment with respect to, any
of USB's capital stock or (ii) make any payment of principal, interest or
premium,
if any, on or repay, repurchase or redeem any debt securities of USB (including
the Junior Subordinated Indentures) that rank PARI PASSU with or junior in
interest to the Corresponding Junior Subordinated Debentures or make any
guarantee payments with respect to any guarantee by USB of debt securities of
any subsidiary of USB (including other Guarantees) if such guarantee ranks PARI
PASSU with or junior in interest to the Corresponding Junior Subordinated
Debentures (other than (a) dividends or distributions in common stock of USB,
(b) any declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto, (c)
payments under any Guarantee and (d) purchases of common stock related to the
issuance
of common stock or rights under any of USB's benefit plans for its directors,
officers or employees).
 
    The revenue of each Issuer available for distribution to holders of its
Capital Securities will be limited to payments under the Corresponding Junior
Subordinated Debentures in which the Issuer will invest the proceeds from the
issuance and sale of its Trust Securities. See "Description of Junior
Subordinated Debentures-- Corresponding Junior Subordinated Debentures." If USB
does not make interest payments on such Corresponding Junior Subordinated
Debentures, the Property Trustee will not have funds available to pay
Distributions on the Related Capital Securities. The payment of Distributions
(if and to the extent the Issuer has funds legally available for the payment of
such Distributions and cash sufficient to make such payments) is guaranteed by
USB on a limited basis as set forth herein under "Description of Guarantees".
 
    Distributions on the Capital Securities will be payable to the holders
thereof as they appear on the register
of such Issuer on the relevant record dates, which, as long as the Capital
Securities remain in book-entry form, will be one Business Day prior to the
relevant Distribution Date. Subject to any applicable laws and regulations and
the provisions of the applicable Trust Agreement, each such payment will be made
as described under
 
                                       19
<PAGE>
"Book-Entry Issuance." In the event any Capital Securities are not in book-entry
form, the relevant record date for such Capital Securities shall be the date at
least 15 days prior to the relevant Distribution Date, as specified
in the applicable Prospectus Supplement.
 
REDEMPTION OR EXCHANGE
 
    MANDATORY REDEMPTION.  Upon the repayment or redemption, in whole or in
part, of any Corresponding Junior Subordinated Debentures, whether at maturity
or upon earlier redemption as provided in the Indenture,
the proceeds from such repayment or redemption shall be applied by the Property
Trustee to redeem a Like Amount (as defined below) of the Trust Securities, upon
not less than 30 nor more than 60 days' notice, at a redemption price (the
"Redemption Price") equal to the aggregate Liquidation Amount of such Trust
Securities plus accumulated but unpaid Distributions thereon to the date of
redemption (the "Redemption Date") and the related amount of the premium, if
any, paid by USB upon the concurrent redemption of such Corresponding Junior
Subordinated Debentures. See "Description of Junior Subordinated
Debentures--Redemption". If less than all of any series of Corresponding Junior
Subordinated Debentures are to be repaid or redeemed on a Redemption Date, then
the proceeds from such repayment or redemption shall be allocated to the
redemption
PRO RATA of the related Capital Securities and the Common Securities. The amount
of premium, if any, paid by USB upon the redemption of all or any part of any
series of any Corresponding Junior Subordinated Debentures to be repaid or
redeemed on a Redemption Date shall be allocated to the redemption PRO RATA of
the related Capital Securities and the Common Securities.
 
    USB will have the right to redeem any series of Corresponding Junior
Subordinated Debentures (i) on or after such date as may be specified in the
applicable Prospectus Supplement, in whole at any time or in part
from time to time, (ii) at any time, in whole (but not in part), upon the
occurrence of a Tax Event, a Capital Treatment Event or an Investment Company
Event or (iii) as may be otherwise specified in the applicable Prospectus
Supplement, in each case subject to receipt of prior approval by the Federal
Reserve if then required under applicable capital guidelines or policies of the
Federal Reserve.
 
    DISTRIBUTION OF CORRESPONDING JUNIOR SUBORDINATED DEBENTURES.  Subject to
USB having received prior approval of the Federal Reserve to do so if then
required under applicable guidelines or policies of the Federal Reserve, USB has
the right at any time to terminate any Issuer and, after satisfaction of the
liabilities of creditors of such Issuer as provided by applicable law, cause
such Corresponding Junior Subordinated Debentures in respect of the Related
Capital Securities and Related Common Securities issued by such Issuer to be
distributed to the holders of such Capital Securities and Common Securities in
liquidation of the Issuer.
 
    TAX EVENT, CAPITAL TREATMENT EVENT OR INVESTMENT COMPANY EVENT
REDEMPTION.  If a Tax Event, Capital Treatment Event or Investment Company Event
in respect of a series of Capital Securities and Common Securities shall occur
and be continuing, USB has the right to redeem the Corresponding Junior
Subordinated Debentures in whole (but not in part) and thereby cause a mandatory
redemption of such Capital Securities and Common Securities in whole (but not in
part) at the Redemption Price within 90 days following the occurrence
of such Tax Event, Capital Treatment Event or Investment Company Event. In the
event a Tax Event, Capital Treatment Event or Investment Company Event in
respect of a series of Capital Securities and Common Securities has occurred and
is continuing and USB does not elect to redeem the Corresponding Junior
Subordinated Debentures and thereby cause a mandatory redemption of such Capital
Securities and Common Securities or to terminate the related Issuer and cause
the Corresponding Junior Subordinated Debentures to be distributed to holders of
such Capital Securities and Common Securities in liquidation of the Issuer as
described above, such Capital Securities and Common Securities will remain
outstanding and Additional Sums (as defined below) may be payable on the
Corresponding Junior Subordinated Debentures.
 
    "Additional Sums" means the additional amounts as may be necessary in order
that the amount of Distributions then due and payable by an Issuer on the
outstanding Capital Securities and Common Securities of such Issuer shall not be
reduced as a result of any additional taxes, duties and other governmental
charges to which such Issuer has become subject as a result of a Tax Event.
 
                                       20
<PAGE>
    "Like Amount" means (i) with respect to a redemption of any series of Trust
Securities, Trust Securities of such series having a Liquidation Amount (as
defined below) equal to that portion of the principal amount of Corresponding
Junior Subordinated Debentures to be contemporaneously redeemed in accordance
with the Indenture, allocated to the Common Securities and to the Capital
Securities based upon the relative Liquidation Amounts of such classes and the
proceeds of which will be used to pay the Redemption Price of such Trust
Securities, and (ii) with respect to a distribution of Corresponding Junior
Subordinated Debentures to holders of any series of Trust Securities in
connection with a dissolution or liquidation of the related Issuer,
Corresponding Junior Subordinated Debentures having a principal amount equal to
the Liquidation Amount of the Trust Securities of the holder to whom such
Corresponding Junior Subordinated Debentures are distributed.
 
    "Liquidation Amount" means the stated amount of $25 per Trust Security.
 
    After the liquidation date is fixed for any distribution of Corresponding
Junior Subordinated Debentures for any series of Capital Securities (i) such
series of Capital Securities will no longer be deemed to be outstanding, (ii)
The Depository Trust Company ("DTC") or its nominee, as the record holder of
such series of Capital Securities, will receive a registered global certificate
or certificates representing the Corresponding Junior Subordinated Debentures to
be delivered upon such distribution and (iii) any certificates representing such
series of Capital Securities not held by DTC or its nominee will be deemed to
represent the Corresponding Junior Subordinated Debentures having a principal
amount equal to the stated liquidation preference of such series of Capital
Securities, and bearing accrued and unpaid interest in an amount equal to the
accrued and unpaid Distributions on such series of Capital Securities until such
certificates are presented to the Administrative Trustees of the applicable
Issuer or their agent for transfer or reissuance.
 
    There can be no assurance as to the market prices for the Capital Securities
or the Corresponding Junior Subordinated Debentures that may be distributed in
exchange for Capital Securities if a dissolution and liquidation of an Issuer
were to occur. Accordingly, the Capital Securities that an investor may
purchase, or the Corresponding Junior Subordinated Debentures that the investor
may receive on dissolution and liquidation of
an Issuer, may trade at a discount to the price that the investor paid to
purchase the Capital Securities offered hereby.
 
REDEMPTION PROCEDURES
 
    Capital Securities redeemed on each Redemption Date shall be redeemed at the
Redemption Price with the applicable proceeds from the contemporaneous
redemption of the Corresponding Junior Subordinated Debentures. Redemptions of
the Capital Securities shall be made and the Redemption Price shall be payable
on each Redemption Date only to the extent that the related Issuer has funds on
hand available for the payment of such Redemption Price. See also
"--Subordination of Common Securities".
 
    If an Issuer gives a notice of redemption in respect of its Capital
Securities, then, by 12:00 noon, New York City time, on the Redemption Date, to
the extent funds are available, the Property Trustee will deposit
irrevocably with DTC funds sufficient to pay the applicable Redemption Price and
will give DTC irrevocable instructions and authority to pay the Redemption Price
to the holders of such Capital Securities. See "Book-
Entry Issuance". If such Capital Securities are no longer in book-entry form,
the Property Trustee, to the extent funds are available, will irrevocably
deposit with the paying agent for such Capital Securities funds sufficient to
pay the applicable Redemption Price and will give such paying agent irrevocable
instructions and authority to
pay the Redemption Price to the holders thereof upon surrender of their
certificates evidencing such Capital Securities. Notwithstanding the foregoing,
Distributions payable on or prior to the Redemption Date for any Capital
Securities called for redemption shall be payable to the holders of such Capital
Securities on the relevant record dates for the related Distribution Dates. If
notice of redemption shall have been given and funds deposited as required, then
upon the date of such deposit, all rights of the holders of such Capital
Securities so called for redemption will cease, except the right of the holders
of such Capital Securities to receive the Redemption Price, but without interest
on such Redemption Price, and such Capital Securities will cease to be
outstanding. In the event that any date fixed for redemption of Capital
Securities is not a Business Day, then payment of the
 
                                       21
<PAGE>
Redemption Price payable on such date will be made on the next succeeding day
which is a Business Day (and without any interest or other payment in respect of
any such delay), except that, if such Business Day falls in the next calendar
year, such payment will be made on the immediately preceding Business Day. In
the event that payment of the Redemption Price in respect of Capital Securities
called for redemption is improperly withheld
or refused and not paid either by the Issuer or by USB pursuant to the Guarantee
as described under "Description
of Guarantees", Distributions on such Capital Securities will continue to accrue
at the then applicable rate, from the Redemption Date originally established by
the Issuer for such Capital Securities to the date such Redemption Price is
actually paid, in which case the actual payment date will be the date fixed for
redemption for purposes
of calculating the Redemption Price.
 
    Subject to applicable law (including, without limitation, United States
Federal securities law), USB or its subsidiaries may at any time and from time
to time purchase outstanding Capital Securities by tender, in the
open market or by private agreement.
 
    Payment of the Redemption Price on the Capital Securities and any
distribution of Corresponding Junior Subordinated Debentures to holders of
Capital Securities shall be made to the applicable recordholders thereof
as they appear on the register for such Capital Securities on the relevant
record date, which shall be one Business Day prior to the relevant Redemption
Date or liquidation date, as applicable; PROVIDED, HOWEVER, that in the event
that any Capital Securities are not in book-entry form, the relevant record date
for such Capital Securities shall
be a date at least 15 days prior to the Redemption Date or liquidation date, as
applicable, as specified in the applicable Prospectus Supplement.
 
    If less than all of the Capital Securities and Common Securities issued by
an Issuer are to be redeemed on a Redemption Date, then the aggregate
Liquidation Amount of such Capital Securities and Common Securities to be
redeemed shall be allocated PRO RATA to the Capital Securities and the Common
Securities based upon the relative Liquidation Amounts of such classes. The
particular Capital Securities to be redeemed shall be selected on a PRO RATA
basis not more than 60 days prior to the Redemption Date by the Property Trustee
from the outstanding Capital Securities not previously called for redemption, by
such method as the Property Trustee shall deem fair and appropriate and which
may provide for the selection for redemption of portions (equal to $25 or
an integral multiple of $25 in excess thereof) of the Liquidation Amount of
Capital Securities of a denomination larger than $25. The Property Trustee shall
promptly notify the trust registrar in writing of the Capital Securities
selected for redemption and, in the case of any Capital Securities selected for
partial redemption, the Liquidation Amount thereof to be redeemed. For all
purposes of each Trust Agreement, unless the context otherwise requires, all
provisions relating to the redemption of Capital Securities shall relate, in the
case of any Capital Securities redeemed or to be redeemed only in part, to the
portion of the aggregate Liquidation Amount of Capital Securities which has been
or is to be redeemed.
 
    Notice of any redemption will be mailed at least 30 days but not more than
60 days before the Redemption Date to each Holder of Trust Securities to be
redeemed at its registered address. Unless USB defaults in payment of the
Redemption Price on the Corresponding Junior Subordinated Debentures, on and
after the Redemption Date interest will cease to accrue on such Junior
Subordinated Debentures or portions thereof (and distributions will cease to
accrue on the Related Capital Securities or portions thereof) called for
redemption.
 
SUBORDINATION OF COMMON SECURITIES
 
    Payment of Distributions on, and the Redemption Price of, each Issuer's
Capital Securities and Common Securities, as applicable, shall be made PRO RATA
based on the Liquidation Amount of such Capital Securities and Common
Securities; PROVIDED, HOWEVER, that if on any Distribution Date or Redemption
Date a Debenture Event of Default shall have occurred and be continuing, no
payment of any Distribution on, or Redemption Price of,
any of the Issuer's Common Securities, and no other payment on account of the
redemption, liquidation or other acquisition of such Common Securities, shall be
made unless payment in full in cash of all accumulated and unpaid Distributions
on all of the Issuer's outstanding Capital Securities for all Distribution
periods terminating on or prior thereto, or in the case of payment of the
Redemption Price the full amount of such Redemption Price
 
                                       22
<PAGE>
on all of the Issuer's outstanding Capital Securities then called for
redemption, shall have been made or provided for, and all funds available to the
Property Trustee shall first be applied to the payment in full in cash of all
Distributions on, or Redemption Price of, the Issuer's Capital Securities then
due and payable.
 
    In the case of any event of default resulting from a Debenture Event of
Default, USB as holder of such Issuer's Common Securities will be deemed to have
waived any right to act with respect to any such Event of Default under the
applicable Trust Agreement until the effect of all such Events of Default with
respect to such Capital Securities have been cured, waived or otherwise
eliminated. Until any such Events of Default under the applicable Trust
Agreement with respect to the Capital Securities have been so cured, waived or
otherwise eliminated, the Property Trustee shall act solely on behalf of the
holders of such Capital Securities and not on behalf of USB as holder of the
Issuer's Common Securities, and only the holders of such Capital Securities will
have the right to direct the Property Trustee to act on their behalf.
 
LIQUIDATION DISTRIBUTION UPON TERMINATION
 
    Pursuant to each Trust Agreement, each Issuer shall automatically terminate
upon expiration of its term and shall terminate on the first to occur of: (i)
certain events of bankruptcy, dissolution or liquidation of USB; (ii)
the distribution of a Like Amount of the Corresponding Junior Subordinated
Debentures to the holders of its Trust Securities, if USB, as Depositor, has
given written direction to the Property Trustee to terminate such Issuer (which
direction is optional and wholly within the discretion of USB, as Depositor);
(iii) redemption of all of the Issuer's Capital Securities as described under
"Description of Capital Securities--Redemption or Exchange-- Mandatory
Redemption"; and (iv) the entry of an order for the dissolution of the Issuer by
a court of competent jurisdiction.
 
    If an early termination occurs as described in clause (i), (ii) or (iv)
above, the Issuer shall be liquidated by the Issuer Trustees as expeditiously as
the Issuer Trustees determine to be possible by distributing, after satisfaction
of liabilities to creditors of such Issuer as provided by applicable law, to the
holders of such Trust Securities a Like Amount of the Corresponding Junior
Subordinated Debentures, unless such distribution is determined by the Property
Trustee not to be practical, in which event such holders will be entitled to
receive
out of the assets of the Issuer available for distribution to holders, after
satisfaction of liabilities to creditors of such Issuer as provided by
applicable law, an amount equal to, in the case of holders of Capital
Securities, the aggregate of the Liquidation Amount plus accrued and unpaid
Distributions thereon to the date of payment (such amount being the "Liquidation
Distribution"). If such Liquidation Distribution can be paid only in part
because such Issuer has insufficient assets available to pay in full the
aggregate Liquidation Distribution, then the amounts payable directly by such
Issuer on its Capital Securities shall be paid on a PRO RATA basis. The
holder(s) of such Issuer's Common Securities will be entitled to receive
distributions upon any such liquidation PRO RATA with the holders of its Capital
Securities, except that if a Debenture Event of Default has occurred and is
continuing, the Capital Securities shall have a priority over the Common
Securities. See "--Subordination of Common Securities." A supplemental Indenture
may provide that if an early termination occurs as described in clause (iv)
above, the Corresponding Junior Subordinated Debentures may be subject to
optional redemption in whole (but not in part).
 
EVENTS OF DEFAULT; NOTICE
 
    Any one of the following events constitutes an "Event of Default" under each
Trust Agreement (an "Event of Default") with respect to the Capital Securities
issued thereunder (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or pursuant
to any judgment, decree or order of any court or any order, rule or regulation
of any administrative or governmental body):
 
         (i) the occurrence of a Debenture Event of Default under the Indenture
    (see "Description of Junior Subordinated Debentures--Debenture Events of
    Default"); or
 
        (ii) default by the Property Trustee in the payment of any Distribution
    when it becomes due and payable, and continuation of such default for a
    period of 30 days; or
 
                                       23
<PAGE>
        (iii) default by the Property Trustee in the payment of any Redemption
    Price of any Trust Security when it becomes due and payable; or
 
        (iv) default in the performance, or breach, in any material respect, of
    any covenant or warranty of the Issuer Trustees in such Trust Agreement
    (other than a covenant or warranty a default in the performance of which or
    the breach of which is addressed in clause (ii) or (iii) above), and
    continuation of such default or breach for a period of 60 days after there
    has been given, by registered or certified mail, to the defaulting Issuer
    Trustee or Trustees by the holders of at least 25% in aggregate liquidation
    preference of the outstanding Capital Securities of the applicable Issuer, a
    written notice specifying such default or breach
    and requiring it to be remedied and stating that such notice is a "Notice of
    Default" under such Trust Agreement; or
 
        (v) the occurrence of certain events of bankruptcy or insolvency with
    respect to the Property Trustee and the failure by USB to appoint a
    successor Property Trustee within 60 days thereof.
 
    Within five Business Days after the occurrence of any Event of Default
actually known to the Property Trustee, the Property Trustee shall transmit
notice of such Event of Default to the holders of such Issuer's Capital
Securities, the Administrative Trustees and USB, as Depositor, unless such Event
of Default shall have been cured or waived. USB, as Depositor, and the
Administrative Trustees are required to file annually with the Property Trustee
a certificate as to whether or not they are in compliance with all the
conditions and covenants applicable to them under each Trust Agreement.
 
    If a Debenture Event of Default has occurred and is continuing, the Capital
Securities shall have a preference over the Common Securities upon termination
of each Issuer as described above. See "--Liquidation
Distribution Upon Termination". The existence of an Event of Default does not
entitle the holders of Capital Securities to accelerate the maturity thereof.
 
REMOVAL OF ISSUER TRUSTEES
 
    Unless a Debenture Event of Default shall have occurred and be continuing,
any Issuer Trustee may be removed at any time by the holder of the Common
Securities. If a Debenture Event of Default has occurred and
is continuing, the Property Trustee and the Delaware Trustee may be removed at
such time by the holders of a majority in Liquidation Amount of the outstanding
Capital Securities. In no event will the holders of the Capital Securities have
the right to vote to appoint, remove or replace the Administrative Trustees,
which voting rights are vested exclusively in USB as the holder of the Common
Securities. No resignation or removal of an Issuer Trustee and no appointment of
a successor trustee shall be effective until the acceptance of appointment by
the successor trustee in accordance with the provisions of the applicable Trust
Agreement.
 
CO-TRUSTEES AND SEPARATE PROPERTY TRUSTEE
 
    Unless an Event of Default shall have occurred and be continuing, at any
time or times, for the purpose of meeting the legal requirements of the Trust
Indenture Act or of any jurisdiction in which any part of the Trust Property may
at the time be located, USB, as the holder of the Common Securities, and the
Administrative Trustees shall have power to appoint one or more persons either
to act as a co-trustee, jointly with the Property Trustee, of all or any part of
such Trust Property, or to act as separate trustee of any such property, in
either case with such powers as may be provided in the instrument of
appointment, and to vest in such person or persons in such capacity any
property, title, right or power deemed necessary or desirable, subject to the
provisions of the applicable Trust Agreement. In case a Debenture Event of
Default has occurred and is continuing, the Property Trustee alone shall have
power to make such appointment.
 
MERGER OR CONSOLIDATION OF ISSUER TRUSTEES
 
    Any corporation into which the Property Trustee, the Delaware Trustee or any
Administrative Trustee that
is not a natural person may be merged or converted or with which it may be
consolidated, or any corporation
 
                                       24
<PAGE>
resulting from any merger, conversion or consolidation to which such Trustee
shall be a party, or any corporation succeeding to all or substantially all the
corporate trust business of such Trustee, shall be the successor of such Trustee
under each Trust Agreement, provided such corporation shall be otherwise
qualified and eligible.
 
MERGERS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS OF THE ISSUERS
 
    An Issuer may not merge with or into, consolidate, amalgamate, or be
replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any corporation or other Person, except as
described below. An Issuer may, at the request of USB, as depositor of such
Issuer with the consent of the Administrative Trustees of such Issuer but
without the consent of the holders of the Capital Securities of such Issuer,
merge
with or into, consolidate, amalgamate, or be replaced by or convey, transfer or
lease its properties and assets substantially as an entirety to a trust
organized as such under the laws of any State; provided, that (i) such successor
entity either (a) expressly assumes all of the obligations of such Issuer with
respect to its Capital Securities or (b) substitutes for such Capital Securities
other securities having substantially the same terms as such Capital Securities
(the "Successor Securities") so long as the Successor Securities rank the same
as such Capital Securities rank in priority with respect to distributions and
payments upon liquidation, redemption and otherwise, (ii) USB expressly appoints
a trustee of such successor entity possessing the same powers and duties as the
Property Trustee of such Issuer as the holder of the Corresponding Junior
Subordinated Debentures, (iii) the Successor Securities are listed, or any
Successor Securities will be listed upon notification of issuance, on any
national securities exchange or other organization on which such Capital
Securities are then listed, if any, (iv) such merger, consolidation,
amalgamation, replacement, conveyance, transfer or lease does not cause such
Capital Securities (including any Successor Securities) to be downgraded by any
nationally recognized statistical rating organization, (v) such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease does not
adversely affect the rights, preferences and privileges of the holders of such
Capital Securities (including any Successor Securities) in any material respect,
(vi) such successor entity has a purpose identical to that of such Issuer, (vii)
prior to such merger, consolidation, amalgamation, replacement, conveyance,
transfer or lease, USB has received an opinion from independent counsel to such
Issuer experienced in such matters to the effect that (a) such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease does not
adversely affect the rights, preferences and privileges of the holders of such
Capital Securities (including any Successor Securities) in any material respect,
and (b) following such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease, neither such Issuer nor such successor entity
will be required to register as an investment company under the Investment
Company Act of 1940, as amended (the "Investment Company Act"), and (viii) USB
or any permitted successor or assignee owns all of the Common Securities of such
successor entity and guarantees the obligations of such successor entity under
the Successor Securities at least to the extent provided by the Guarantee
related to such Capital Securities. Notwithstanding the foregoing, an Issuer
shall not, except with the consent of holders of 100% in Liquidation Amount of
such Capital Securities, consolidate, amalgamate, merge with or into, or be
replaced by or convey, transfer or lease its properties and assets substantially
as an entirety to any other entity or permit any other entity to consolidate,
amalgamate, merge with or into, or replace it if such consolidation,
amalgamation, merger, replacement, conveyance, transfer or lease would cause the
Issuer or the successor entity to be classified as other than a grantor trust
for United States Federal income tax purposes.
 
VOTING RIGHTS; AMENDMENT OF EACH TRUST AGREEMENT
 
    Except as provided below and under "Description of Guarantees--Amendments
and Assignment" and as otherwise required by law and the applicable Trust
Agreement, the holders of the Capital Securities will have no voting rights.
 
    Each Trust Agreement may be amended from time to time by USB, the Property
Trustee and the Administrative Trustees, without the consent of the holders of
the Related Capital Securities (i) to cure any ambiguity, correct or supplement
any provisions in such Trust Agreement that may be inconsistent with any other
provision, or to make any other provisions with respect to matters or questions
arising under such Trust
 
                                       25
<PAGE>
Agreement, which shall not be inconsistent with the other provisions of such
Trust Agreement, or (ii) to modify, eliminate or add to any provisions of such
Trust Agreement to such extent as shall be necessary to ensure that the related
Issuer will be classified for United States Federal income tax purposes as a
grantor trust at all times that any Trust Securities of such Issuer are
outstanding or to ensure that such Issuer will not be required to register as an
"investment company" under the Investment Company Act; PROVIDED, HOWEVER, that
in the case of clause (i), such action shall not adversely affect in any
material respect the interests of any holder of Trust Securities of such Issuer,
and any amendments of such Trust Agreement shall become effective when notice
thereof is given to the holders of Trust Securities of such Issuer. Each Trust
Agreement may be amended by the applicable Issuer Trustees and USB with (i) the
consent of holders representing not less than a majority (based upon Liquidation
Amounts) of the outstanding Trust Securities of the related Issuer, and (ii)
receipt by such Issuer Trustees of an opinion of counsel to the effect that such
amendment or the exercise of any power granted to such Issuer Trustees in
accordance with such amendment will not affect the applicable Issuer's status as
a grantor trust for United States Federal income tax purposes or such Issuer's
exemption from status as an "investment company" under the Investment Company
Act, provided that without the consent of each holder of Trust Securities of
such Issuer, such Trust Agreement may not be amended to (i) change the amount or
timing of any Distribution on such Trust Securities or otherwise adversely
affect the amount of any Distribution required to be made in respect of such
Trust Securities as of a specified date or (ii) restrict the right of a holder
of Trust Securities of such Issuer to institute suit for the enforcement of any
such payment on or after such date.
 
    So long as any Corresponding Junior Subordinated Debentures are held by the
Property Trustee of any Issuer, the Issuer Trustees of such Issuer shall not (i)
direct the time, method and place of conducting any proceeding for any remedy
available to the Debenture Trustee, or executing any trust or power conferred on
such Property Trustee with respect to such Corresponding Junior Subordinated
Debentures, (ii) waive any past default that is waivable under Section 513 of
the Indenture, (iii) exercise any right to rescind or annul a declaration that
the principal of all the Corresponding Junior Subordinated Debentures shall be
due and payable or (iv) consent
to any amendment, modification or termination of the Indenture or such
Corresponding Junior Subordinated Debentures, where such consent shall be
required, without, in each case, obtaining the prior approval of the holders of
a majority in aggregate Liquidation Amount of all outstanding Related Capital
Securities; PROVIDED, HOWEVER, that where a consent under the Indenture would
require the consent of each holder of Corresponding Junior Subordinated
Debentures affected thereby, no such consent shall be given by such Property
Trustee without the prior consent of each holder of the Related Capital
Securities. The Issuer Trustees of such Issuer shall not revoke any action
previously authorized or approved by a vote of the holders of the Capital
Securities of such Issuer except by subsequent vote of such holders. The
Property Trustee of such Issuer shall notify each holder of Capital Securities
of such Issuer of any notice of default with respect to the Corresponding Junior
Subordinated Debentures. In addition to obtaining the foregoing approvals of
such holders of the Capital Securities, prior to taking any of the foregoing
actions, the Issuer Trustees of such Issuer shall obtain an opinion of counsel
experienced in such matters to the effect that such Issuer will not be
classified as an association taxable as a corporation for United States Federal
income tax purposes on account of such action.
 
    Any required approval of holders of Capital Securities of any Issuer may be
given at a meeting of such holders convened for such purpose or pursuant to
written consent. The Property Trustee will cause a notice of
any meeting at which holders of Capital Securities of such Issuer are entitled
to vote, or of any matter upon which action by written consent of such holders
is to be taken, to be given to each holder of record of Capital Securities of
such Issuer in the manner set forth in the applicable Trust Agreement.
 
    No vote or consent of the holders of Capital Securities of any Issuer will
be required for such Issuer to redeem and cancel its Capital Securities in
accordance with the applicable Trust Agreement.
 
    Notwithstanding that holders of Capital Securities are entitled to vote or
consent under any of the circumstances described above, any of the Capital
Securities that are owned by USB, the Issuer Trustees or any affiliate of USB or
any Issuer Trustees, shall, for purposes of such vote or consent, be treated as
if they were not outstanding.
 
                                       26
<PAGE>
GLOBAL CAPITAL SECURITIES
 
    The Capital Securities of a series may be issued in whole or in part in the
form of one or more global capital securities ("Global Capital Securities") that
will be deposited with, or on behalf of, the Depositary identified in the
Prospectus Supplement relating to such series. Unless otherwise indicated in the
applicable Prospectus Supplement for such series, the Depositary will be DTC.
Global Capital Securities may be issued only in fully registered form and in
either temporary or permanent form. Unless and until it is exchanged in whole or
in part for the individual Capital Securities represented thereby, a Global
Capital Security may not be transferred except as a whole by the Depositary for
such Global Capital Security to a nominee of such Depositary or by a nominee of
such Depositary to such Depositary or another nominee of such Depositary or by
the Depositary or any nominee to a successor Depositary or any nominee of such
successor.
 
    The specific terms of the depositary arrangement with respect to a series of
Capital Securities will be described in the Prospectus Supplement relating to
such series. USB anticipates that the following provisions will generally apply
to depositary arrangements.
 
    Upon the issuance of a Global Capital Security, and the deposit of such
Global Capital Security with or on behalf of the Depositary, the Depositary for
such Global Capital Security or its nominee will credit, on its book-entry
registration and transfer system, the respective aggregate Liquidation Amounts
of the individual Capital Securities represented by such Global Capital
Securities to the accounts of Participants. Such accounts shall be designated by
the dealers, underwriters or agents with respect to such Capital Securities or
by USB if such Capital Securities are offered and sold directly by USB.
Ownership of beneficial interests in a Global Capital Security will be limited
to Participants or persons that may hold interests through Participants.
Ownership of beneficial interests in such Global Capital Security will be shown
on, and the transfer of that ownership will be effected only through, records
maintained by the applicable Depositary or its nominee (with respect to
interests
of Participants) and the records of Participants (with respect to interests of
persons who hold through Participants). The laws of some states require that
certain purchasers of securities take physical delivery of such securities in
definitive form. Such limits and such laws may impair the ability to transfer
beneficial interests in a Global Capital Security.
 
    So long as the Depositary for a Global Capital Security, or its nominee, is
the registered owner of such Global Capital Security, such Depositary or such
nominee, as the case may be, will be considered the sole owner or holder of the
Capital Securities represented by such Global Capital Security for all purposes
under the Indenture governing such Capital Securities. Except as provided below,
owners of beneficial interests in a Global Capital Security will not be entitled
to have any of the individual Capital Securities of the series represented by
such Global Capital Security registered in their names, will not receive or be
entitled to receive physical delivery of any such Capital Securities of such
series in definitive form and will not be considered the owners or holders
thereof under the Indenture.
 
    Payments of principal of (and premium, if any) and interest on individual
Capital Securities represented by
a Global Capital Security registered in the name of a Depositary or its nominee
will be made to the Depositary or its nominee, as the case may be, as the
registered owner of the Global Capital Security representing such Capital
Securities. None of USB, the Property Trustee, any Paying Agent, or the
Securities Registrar for such Capital Securities will have any responsibility or
liability for any aspect of the records relating to or payments made on account
of beneficial ownership interests of the Global Capital Security representing
such Capital Securities or for maintaining, supervising or reviewing any records
relating to such beneficial ownership interests.
 
    USB expects that the Depositary for a series of Capital Securities or its
nominee, upon receipt of any payment of Liquidation Amount, premium or
Distributions in respect of a permanent Global Capital Security representing any
of such Capital Securities, immediately will credit Participants' accounts with
payments in amounts proportionate to their respective beneficial interest in the
aggregate Liquidation Amount of such Global Capital Security for such Capital
Securities as shown on the records of such Depositary or its nominee. USB
 
                                       27
<PAGE>
also expects that payments by Participants to owners of beneficial interests in
such Global Capital Security held through such Participants will be governed by
standing instructions and customary practices, as is now the case with
securities held for the accounts of customers in bearer form or registered in
"street name." Such payments will be the responsibility of such Participants.
 
    Unless otherwise specified in the applicable Prospectus Supplement, if a
Depositary for a series of Capital Securities is at any time unwilling, unable
or ineligible to continue as depositary and a successor depositary is
not appointed by USB within 90 days, USB will issue individual Capital
Securities of such series in exchange for the Global Capital Security
representing such series of Capital Securities. In addition, USB may at any time
and in its sole discretion, subject to any limitations described in the
Prospectus Supplement relating to such Capital Securities, determine not to have
any Capital Securities of such series represented by one or more Global Capital
Securities and, in such event, will issue individual Capital Securities of such
series in exchange for the Global Capital Security or Securities representing
such series of Capital Securities. Further, if USB so specifies with respect to
the Capital Securities of a series, an owner of a beneficial interest in a
Global Capital Security representing Capital Securities of such series may, on
terms acceptable to USB, the Property Trustee and the Depositary for such Global
Capital Security, receive individual Capital Securities of such series in
exchange for such beneficial interests, subject to any limitations described in
the Prospectus Supplement relating to such Capital Securities. In any such
instance, an owner of a beneficial interest in a Global Capital Security will be
entitled to physical delivery of individual Capital Securities of the series
represented by such Global Capital Security equal in principal amount to such
beneficial interest and to have such Capital Securities registered in its name.
Individual Capital Securities of such series so issued will be issued in
denominations, unless otherwise specified by USB, of $25 and integral multiples
thereof.
 
PAYMENT AND PAYING AGENCY
 
    Payments in respect of the Capital Securities shall be made to the
Depositary, which shall credit the relevant accounts at the Depositary on the
applicable Distribution Dates or, if any Issuer's Capital Securities are not
held by the Depositary, such payments shall be made by check mailed to the
address of the holder entitled thereto as such address shall appear on the
Register. Unless otherwise specified in the applicable Prospectus Supplement,
the paying agent (the "Paying Agent") shall initially be the Property Trustee
and any co-paying agent chosen
by the Property Trustee and acceptable to the Administrative Trustees and USB.
The Paying Agent shall be permitted to resign as Paying Agent upon 30 days'
written notice to the Property Trustee and USB. In the event that the Property
Trustee shall no longer be the Paying Agent, the Administrative Trustees shall
appoint a successor (which shall be a bank or trust company acceptable to the
Administrative Trustees and USB) to act as Paying Agent.
 
REGISTRAR AND TRANSFER AGENT
 
    Unless otherwise specified in the applicable Prospectus Supplement, the
Property Trustee will act as registrar and transfer agent for the Capital
Securities.
 
    Registration of transfers of Capital Securities will be effected without
charge by or on behalf of each Issuer, but upon payment of any tax or other
governmental charges that may be imposed in connection with any transfer or
exchange. The Issuers will not be required to register or cause to be registered
the transfer of their Capital Securities after such Capital Securities have been
called for redemption.
 
INFORMATION CONCERNING THE PROPERTY TRUSTEE
 
    The Property Trustee, other than during the occurrence and continuance of an
Event of Default, undertakes to perform only such duties as are specifically set
forth in each Trust Agreement and, after such Event of Default, must exercise
the same degree of care and skill as a prudent person would exercise or use in
the conduct of his
or her own affairs. Subject to this provision, the Property Trustee is under no
obligation to exercise any of the powers vested in it by the applicable Trust
Agreement at the request of any holder of Capital Securities unless it
 
                                       28
<PAGE>
is offered reasonable indemnity against the costs, expenses and liabilities that
might be incurred thereby. If no Event of Default has occurred and is continuing
and the Property Trustee is required to decide between
alternative causes of action, construe ambiguous provisions in the applicable
Trust Agreement or is unsure of the application of any provision of the
applicable Trust Agreement, and the matter is not one on which holders of
Capital Securities are entitled under such Trust Agreement to vote, then the
Property Trustee shall take such action as is directed by USB and if not so
directed, shall take such action as it deems advisable and in the best interests
of the holders of the Trust Securities and will have no liability except for its
own bad faith, negligence or willful misconduct.
 
MISCELLANEOUS
 
    The Administrative Trustees are authorized and directed to conduct the
affairs of and to operate the Issuers in such a way that no Issuer will be
deemed to be an "investment company" required to be registered under the
Investment Company Act or classified as an association taxable as a corporation
for United States Federal income tax purposes and so that the Corresponding
Junior Subordinated Debentures will be treated as indebtedness of USB for United
States Federal income tax purposes. In this connection, USB and the
Administrative Trustees
are authorized to take any action, not inconsistent with applicable law, the
certificate of trust of each Issuer or each Trust Agreement, that USB and the
Administrative Trustees determine in their discretion to be necessary or
desirable for such purposes, as long as such action does not materially
adversely affect the interests of the holders of the related Capital Securities.
 
    Holders of the Capital Securities have no preemptive or similar rights.
 
    No Issuer may borrow money or issue debt or mortgage or pledge any of its
assets.
 
                              BOOK-ENTRY ISSUANCE
 
    DTC will act as securities depositary for all of the Capital Securities and
the Junior Subordinated Debentures, unless otherwise referred to in the
Prospectus Supplement relating to an offering of Capital Securities or Junior
Subordinated Debentures. The Capital Securities and the Junior Subordinated
Debentures will be issued only as fully-registered securities registered in the
name of Cede & Co. (DTC's nominee). One or more fully-registered global
certificates will be issued for the Capital Securities of each Issuer and the
Junior Subordinated Debentures, representing in the aggregate the total number
of such Issuer's Capital Securities or aggregate principal balance of Junior
Subordinated Debentures, respectively, and will be deposited with DTC.
 
    DTC is a limited purpose trust company organized under the New York Banking
Law, a "banking organization" within the meaning of the New York Banking Law, a
member of the Federal Reserve System, a "clearing corporation" within the
meaning of the New York Uniform Commercial Code, and a "clearing agency"
registered pursuant to the provisions of Section 17A of the Exchange Act. DTC
holds securities that its Participants deposit with DTC. DTC also facilitates
the settlement among Participants of securities transactions, such as transfers
and pledges, in deposited securities through electronic computerized book-entry
changes in Participants' accounts, thereby eliminating the need for physical
movement of securities certificates. "Direct Participants" include securities
brokers and dealers, banks, trust companies, clearing corporations and certain
other organizations. DTC is owned by a number of its Direct Participants and by
the New York Stock Exchange, Inc., the American Stock Exchange, Inc. and the
National Association of Securities Dealers, Inc. Access to the DTC system is
also available to others such as securities brokers and dealers, banks and trust
companies that clear through or maintain custodial relationships with Direct
Participants, either directly or indirectly ("Indirect Participants"). The rules
applicable to DTC and its Participants are on file with the Commission.
 
    Purchases of Capital Securities or Junior Subordinated Debentures within the
DTC system must be made
by or through Direct Participants, which will receive a credit for the Capital
Securities or Junior Subordinated Debentures on DTC's records. The ownership
interest of each actual purchaser of each Capital Security and each Junior
Subordinated Debenture ("Beneficial Owner") is in turn to be recorded on the
Direct and Indirect
 
                                       29
<PAGE>
Participants' records. Beneficial Owners will not receive written confirmation
from DTC of their purchases, but Beneficial Owners are expected to receive
written confirmations providing details of the transactions, as well as periodic
statements of their holdings, from the Direct or Indirect Participants through
which the Beneficial Owners purchased Capital Securities or Junior Subordinated
Debentures. Transfers of ownership interests in the Capital Securities or Junior
Subordinated Debentures are to be accomplished by entries made on the books of
Participants acting on behalf of Beneficial Owners. Beneficial Owners will not
receive certificates representing their ownership interests in Capital
Securities or Junior Subordinated Debentures, except in the event that use of
the book-entry system for the Capital Securities of such Issuer or Junior
Subordinated Debentures is discontinued.
 
    DTC has no knowledge of the actual Beneficial Owners of the Capital
Securities or Junior Subordinated Debentures; DTC's records reflect only the
identity of the Direct Participants to whose accounts such Capital Securities or
Junior Subordinated Debentures are credited, which may or may not be the
Beneficial Owners. The Participants will remain responsible for keeping account
of their holdings on behalf of their customers.
 
    Conveyance of notices and other communications by DTC to Direct
Participants, by Direct Participants to Indirect Participants, and by Direct
Participants and Indirect Participants to Beneficial Owners and the voting
rights of Direct Participants, Indirect Participants and Beneficial Owners will
be governed by arrangements among them, subject to any statutory or regulatory
requirements as may be in effect from time to time.
 
    Redemption notices will be sent to Cede & Co. as the registered holder of
the Capital Securities or Junior Subordinated Debentures. If less than all of an
Issuer's Capital Securities or the Junior Subordinated Debentures are being
redeemed, DTC's current practice is to determine by lot the amount of the
interest of each Direct Participant to be redeemed.
 
    Although voting with respect to the Capital Securities or the Junior
Subordinated Debentures is limited to the holders of record of the Capital
Securities or Junior Subordinated Debentures, in those instances in which a vote
is required, neither DTC nor Cede & Co. will itself consent or vote with respect
to Capital Securities or Junior Subordinated Debentures. Under its usual
procedures, DTC would mail an omnibus proxy (the "Omnibus Proxy") to the
relevant Trustee as soon as possible after the record date. The Omnibus Proxy
assigns Cede & Co.'s consenting or voting rights to those Direct Participants to
whose accounts such Capital Securities or Junior Subordinated Debentures are
credited on the record date (identified in a listing attached to the Omnibus
Proxy).
 
    Distribution payments on the Capital Securities or the Junior Subordinated
Debentures will be made by the relevant Trustee to DTC. DTC's practice is to
credit Direct Participants' accounts on the relevant payment date
in accordance with their respective holdings shown on DTC's records unless DTC
has reason to believe that it will not receive payments on such payment date.
Payments by Participants to Beneficial Owners will be governed by standing
instructions and customary practices and will be the responsibility of such
Participant and not of DTC, the relevant Trustee, the Issuer thereof or USB,
subject to any statutory or regulatory requirements as may be in effect from
time to time. Payment of Distributions to DTC is the responsibility of the
relevant Trustee, disbursement of such payments to Direct Participants is the
responsibility of DTC, and disbursements of such payments to the Beneficial
Owners is the responsibility of Direct and Indirect Participants.
 
    DTC may discontinue providing its services as securities depositary with
respect to any of the Capital Securities or the Junior Subordinated Debentures
at any time by giving reasonable notice to the relevant Trustee and USB. In the
event that a successor securities depositary is not obtained, definitive Capital
Security or Junior Subordinated Debenture certificates representing such Capital
Securities or Junior Subordinated Debentures are required to be printed and
delivered. USB, at its option, may decide to discontinue use of the system of
book-entry transfers through DTC (or a successor depositary). After a Debenture
Event of Default, the holders of a majority in liquidation preference of Capital
Securities or aggregate principal amount of Junior Subordinated Debentures may
determine to discontinue the system of book-entry transfers through DTC. In any
such event, definitive certificates for such Capital Securities or Junior
Subordinated Debentures will be printed and delivered.
 
                                       30
<PAGE>
    The information in this section concerning DTC and DTC's book-entry system
has been obtained from sources that the Issuers and USB believe to be accurate,
but the Issuers and USB assume no responsibility for
the accuracy thereof. Neither the Issuers nor USB has any responsibility for the
performance by DTC or its Participants of their respective obligations as
described herein or under the rules and procedures governing their respective
operations.
 
                           DESCRIPTION OF GUARANTEES
 
    A Guarantee will be executed and delivered by USB concurrently with the
issuance by each Issuer of its Capital Securities for the benefit of the holders
from time to time of such Capital Securities. Wilmington Trust Company will act
as indenture trustee ("Guarantee Trustee") under each Guarantee Agreement for
the purposes of compliance with the Trust Indenture Act and each Guarantee
Agreement will be qualified as an indenture under the Trust Indenture Act. This
summary of certain provisions of the Guarantees does not purport to be complete
and is subject to, and qualified in its entirety by reference to, all of the
provisions of each Guarantee Agreement, including the definitions therein of
certain terms, and the Trust Indenture Act. The form of the Guarantee Agreement
has been filed as an exhibit to the Registration Statement of which this
Prospectus forms a part. Reference in this summary to Capital Securities means
that Issuer's Capital Securities to which a Guarantee relates. The Guarantee
Trustee will hold each Guarantee for the benefit of the holders of the related
Issuer's Capital Securities.
 
GENERAL
 
    USB will irrevocably agree to pay in full on a subordinated basis, to the
extent set forth herein, the Guarantee Payments (as defined below) to the
holders of the Capital Securities, as and when due, regardless of any defense,
right of set-off or counterclaim that such Issuer may have or assert other than
the defense of payment. The following payments with respect to the Capital
Securities, to the extent not paid by or on behalf of the related Issuer (the
"Guarantee Payments"), will be subject to the Guarantee: (i) any accumulated and
unpaid Distributions required to be paid on such Capital Securities, to the
extent that such Issuer has funds on hand available therefor at such time, (ii)
the Redemption Price with respect to any Capital Securities called for
redemption to the extent that such Issuer has funds on hand available therefor
at such time, or (iii) upon a voluntary or involuntary dissolution, winding up
or liquidation of such Issuer (unless the Corresponding Junior Subordinated
Debentures are distributed to holders of such Capital Securities), the lesser of
(a) the Liquidation Distribution and (b) the amount of assets of such Issuer
remaining available for distribution to holders of Capital Securities. USB's
obligation to make a Guarantee Payment may be satisfied by direct payment of the
required amounts by USB to the holders of the applicable Capital Securities or
by causing the Issuer to pay such amounts to such holders.
 
    Each Guarantee will be an irrevocable guarantee on a subordinated basis of
the related Issuer's obligations under the Capital Securities, but will apply
only to the extent that such related Issuer has funds sufficient to make such
payments, and is not a guarantee of collection.
 
    If USB does not make interest payments on the Corresponding Junior
Subordinated Debentures held by the Issuer, the Issuer will not be able to pay
Distributions on the Capital Securities and will not have funds legally
available therefor. Each Guarantee will rank subordinate and junior in right of
payment to all Senior Debt of USB. See "--Status of the Guarantees". Because USB
is a holding company, the right of USB to participate in any distribution of
assets of any subsidiary upon such subsidiary's liquidation or reorganization or
otherwise, is subject to the prior claims of creditors of that subsidiary,
except to the extent USB may itself be recognized as a creditor of that
subsidiary. Accordingly, USB's obligations under the Guarantees will be
effectively subordinated to all existing and future liabilities of USB's
subsidiaries, and claimants should look only to the assets of USB
for payments thereunder. See "U.S. Bancorp." Except as otherwise provided in the
applicable Prospectus Supplement, the Guarantees do not limit the incurrence or
issuance of other secured or unsecured debt of USB, including Senior Debt,
whether under the Indenture, any other indenture that USB may enter into in the
future or otherwise. See the Prospectus Supplement relating to any offering of
Capital Securities.
 
                                       31
<PAGE>
    USB has, through the applicable Guarantee, the applicable Guarantee
Agreement, the applicable Trust Agreement, the related Junior Subordinated
Debentures, the Indenture and the Expense Agreement, taken together, fully,
irrevocably and unconditionally guaranteed all of the Issuer's obligations under
the Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other documents constitutes such
guarantee. It is only the combined operation of these documents that has the
effect
of providing a full, irrevocable and unconditional guarantee of the Issuer's
obligations under the Capital Securities. See "Relationship Among the Capital
Securities, the Corresponding Junior Subordinated Debentures and the Guarantee".
 
STATUS OF THE GUARANTEES
 
    Each Guarantee will constitute an unsecured obligation of USB and will rank
subordinate and junior in right of payment to all Senior Debt of USB in the same
manner as Junior Subordinated Debentures.
 
    Each Guarantee will rank PARI PASSU with all other Guarantees issued by USB.
Each Guarantee will constitute a guarantee of payment and not of collection
(i.e., the guaranteed party may institute a legal proceeding directly against
the Guarantor to enforce its rights under the Guarantee without first
instituting a legal proceeding against any other person or entity). Each
Guarantee will be held for the benefit of the holders of the related Capital
Securities. Each Guarantee will not be discharged except by payment of the
Guarantee Payments in full
to the extent not paid by the Issuer or upon distribution to the holders of the
Capital Securities of the Corresponding Junior Subordinated Debentures. None of
the Guarantees places a limitation on the amount of additional Senior Debt that
may be incurred by USB. USB expects from time to time to incur additional
indebtedness constituting Senior Debt.
 
AMENDMENTS AND ASSIGNMENT
 
    Except with respect to any changes which do not materially adversely affect
the rights of holders of the related Capital Securities (in which case no vote
will be required), no Guarantee may be amended without the prior approval of the
holders of not less than a majority of the aggregate Liquidation Amount of such
outstanding Capital Securities. The manner of obtaining any such approval will
be as set forth under "Description of the Capital Securities--Voting Rights;
Amendment of Each Trust Agreement". All guarantees and agreements contained in
each Guarantee shall bind the successors, assigns, receivers, trustees and
representatives of USB
and shall inure to the benefit of the holders of the related Capital Securities
then outstanding.
 
EVENTS OF DEFAULT
 
    An event of default under each Guarantee Agreement will occur upon the
failure of USB to perform any of its payment or other obligations thereunder.
The holders of not less than a majority in aggregate Liquidation Amount of the
related Capital Securities have the right to direct the time, method and place
of conducting any proceeding for any remedy available to the Guarantee Trustee
in respect of such Guarantee or to direct the exercise of any trust or power
conferred upon the Guarantee Trustee under such Guarantee Agreement.
 
    Any holder of the Capital Securities may institute a legal proceeding
directly against USB to enforce its rights under such Guarantee without first
instituting a legal proceeding against the Issuer, the Guarantee Trustee or any
other person or entity.
 
    USB, as guarantor, is required to file annually with the Guarantee Trustee a
certificate as to whether or not USB is in compliance with all the conditions
and covenants applicable to it under the Guarantee Agreement.
 
INFORMATION CONCERNING THE GUARANTEE TRUSTEE
 
    The Guarantee Trustee, other than during the occurrence and continuance of a
default by USB in performance of any Guarantee, undertakes to perform only such
duties as are specifically set forth in each Guarantee and, after default with
respect to any Guarantee, must exercise the same degree of care and skill as a
 
                                       32
<PAGE>
prudent person would exercise or use in the conduct of his or her own affairs.
Subject to this provision, the Guarantee Trustee is under no obligation to
exercise any of the powers vested in it by any Guarantee at the request of any
holder of any Capital Securities unless it is offered reasonable indemnity
against the costs, expenses and liabilities that might be incurred thereby.
 
TERMINATION OF THE GUARANTEES
 
    Each Guarantee will terminate and be of no further force and effect upon
full payment of the Redemption Price of the related Capital Securities, upon
full payment of the amounts payable upon liquidation of the related Issuer or
upon distribution of Corresponding Junior Subordinated Debentures to the holders
of the related Capital Securities. Each Guarantee will continue to be effective
or will be reinstated, as the case may be, if at any time any holder of the
related Capital Securities must restore payment of any sums paid under such
Capital Securities or such Guarantee.
 
GOVERNING LAW
 
    Each Guarantee will be governed by and construed in accordance with the laws
of the State of New York.
 
THE EXPENSE AGREEMENT
 
    Pursuant to an Expense Agreement entered into by USB under each Trust
Agreement (the "Expense Agreement"), USB will irrevocably and unconditionally
guarantee to each person or entity to whom the applicable Issuer becomes
indebted or liable, the full payment of any costs, expenses or liabilities of
such Issuer, other than obligations of such Issuer to pay to the holders of any
Capital Securities or other similar interests in such Issuer of the amounts due
such holders pursuant to the terms of the Capital Securities or such other
similar interests, as the case may be.
 
          RELATIONSHIP AMONG THE CAPITAL SECURITIES, THE CORRESPONDING
               JUNIOR SUBORDINATED DEBENTURES AND THE GUARANTEES
 
FULL AND UNCONDITIONAL GUARANTEE
 
    Payments of Distributions and other amounts due on the Capital Securities
(to the extent the Issuer has funds available for the payment of such
Distributions) are irrevocably guaranteed by USB as and to the extent set forth
under "Description of Guarantees." Taken together, USB's obligations under each
series of Junior Subordinated Debentures, the Indenture, the related Trust
Agreement, the related Expense Agreement, the related Guarantee Agreement and
the related Guarantee provide, in the aggregate, a full, irrevocable and
unconditional guarantee
of payments of distributions and other amounts due on the related series of
Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other documents constitutes such
guarantee. It is only the combined operation of these documents that has the
effect of providing a full, irrevocable and unconditional guarantee of the
Issuer's obligations under the Capital Securities. If and to the extent that USB
does not make payments on any series of Corresponding Junior Subordinated
Debentures, such Issuer will not pay Distributions or other amounts due on its
Capital Securities. The Guarantees do not cover payment of Distributions when
the related Issuer does not have sufficient funds to pay such Distributions. In
such event, the remedy of a holder of a series of Capital Securities is to
institute a legal proceeding directly against USB for enforcement of payment of
such Distributions to such holder. The obligations of USB under each Guarantee
are subordinate and junior in right of payment to all Senior Debt.
 
SUFFICIENCY OF PAYMENTS
 
    As long as payments of interest and other payments are made when due on each
series of Corresponding Junior Subordinated Debentures, such payments will be
sufficient to cover Distributions and other payments due on the related Capital
Securities, primarily because (i) the aggregate principal amount of each series
of
 
                                       33
<PAGE>
Corresponding Junior Subordinated Debentures will be equal to the sum of the
aggregate stated Liquidation Amount of the Related Capital Securities and
related Common Securities; (ii) the interest rate and interest and other payment
dates on each series of Corresponding Junior Subordinated Debentures will match
the Distribution rate and Distribution and other payment dates for the related
Capital Securities; (iii) USB shall pay for all and
any costs, expenses and liabilities of such Issuer except the Issuer's
obligations to holders of its Capital Securities under such Capital Securities;
and (iv) each Trust Agreement further provides that the Issuer will not engage
in any activity that is not consistent with the limited purposes of such Issuer.
 
    Notwithstanding anything to the contrary in the Indenture, USB has the right
to set-off any payment it is otherwise required to make thereunder with and to
the extent USB has theretofore made, or is concurrently on
the date of such payment making, a payment under the related Guarantee.
 
ENFORCEMENT RIGHTS OF HOLDERS OF CAPITAL SECURITIES
 
    A holder of any related Capital Security may institute a legal proceeding
directly against USB to enforce its rights under the related Guarantee without
first instituting a legal proceeding against the Guarantee Trustee, the related
Issuer or any other person or entity.
 
    A default or event of default under any Senior Debt of USB would not
constitute a default or Event of Default. However, in the event of payment
defaults under, or acceleration of, Senior Debt of USB, the subordination
provisions of the Indenture provide that no payments may be made in respect of
the Corresponding Junior Subordinated Debentures until such Senior Debt has been
paid in full or any payment default thereunder has been cured or waived. Failure
to make required payments on any series of Corresponding Junior
Subordinated Debentures would constitute an Event of Default.
 
LIMITED PURPOSE OF ISSUERS
 
    Each Issuer's Capital Securities evidence a beneficial interest in such
Issuer, and each Issuer exists for the sole purpose of issuing its Capital
Securities and Common Securities and investing the proceeds thereof in
Corresponding Junior Subordinated Debentures. A principal difference between the
rights of a holder of a Capital Security and a holder of a Corresponding Junior
Subordinated Debenture is that a holder of a Corresponding Junior Subordinated
Debenture is entitled to receive from USB the principal amount of and interest
accrued on Corresponding Junior Subordinated Debentures held, while a holder of
Capital Securities is entitled to receive Distributions from such Issuer (or
from USB under the applicable Guarantee) if and to the extent such Issuer has
funds available for the payment of such Distributions.
 
RIGHTS UPON TERMINATION
 
    Upon any voluntary or involuntary termination, winding-up or liquidation of
any Issuer involving the liquidation of the Corresponding Junior Subordinated
Debentures, the holders of the related Capital Securities will be entitled to
receive, out of assets held by such Issuer, the Liquidation Distribution in
cash. See "Description of Capital Securities--Liquidation Distribution Upon
Termination." Upon any voluntary or
involuntary liquidation or bankruptcy of USB, the Property Trustee, as holder of
the Corresponding Junior Subordinated Debentures, would be a subordinated
creditor of USB, subordinated in right of payment to all Senior Debt as set
forth in the Indenture, but entitled to receive payment in full of principal and
interest, before any stockholders of USB receive payments or distributions.
Since USB is the guarantor under each Guarantee and has agreed to pay for all
costs, expenses and liabilities of each Issuer (other than the Issuer's
obligations to the holders of its Capital Securities), the positions of a holder
of such Capital Securities and a holder of such Corresponding Junior
Subordinated Debentures relative to other creditors and to stockholders of USB
in the event of liquidation or bankruptcy of USB are expected to be
substantially the same.
 
                                       34
<PAGE>
                              PLAN OF DISTRIBUTION
 
    The Junior Subordinated Debentures or the Capital Securities may be sold in
a public offering to or through underwriters or dealers designated from time to
time. USB and each Issuer may sell its Junior Subordinated Debentures or Capital
Securities as soon as practicable after effectiveness of the Registration
Statement of which this Prospectus is a part. The names of any underwriters or
dealers involved in the sale of the Junior Subordinated Debentures or Capital
Securities in respect of which this Prospectus is delivered, the amount or
number of Junior Subordinated Debentures and Capital Securities to be purchased
by any such underwriters and any applicable commissions or discounts will be set
forth in the Prospectus Supplement.
 
    Underwriters may offer and sell Junior Subordinated Debentures or Capital
Securities at a fixed price or prices, which may be changed, or from time to
time at market prices prevailing at the time of sale, at prices related to such
prevailing market prices or at negotiated prices. In connection with the sale of
Capital Securities, underwriters may be deemed to have received compensation
from USB and/or the applicable Issuer in the form of
underwriting discounts or commissions and may also receive commissions.
Underwriters may sell Junior Subordinated Debentures or Capital Securities to or
through dealers, and such dealers may receive compensation in the form of
discounts, concessions or commissions from the underwriters.
 
    Any underwriting compensation paid by USB and/or the applicable Issuer to
underwriters in connection with the offering of Junior Subordinated Debentures
or Capital Securities, and any discounts, concessions or commissions allowed by
such underwriters to participating dealers, will be described in a Prospectus
Supplement. Underwriters and dealers participating in the distribution of Junior
Subordinated Debentures or Capital Securities may be deemed to be underwriters,
and any discounts and commissions received by them and any profit realized by
them on resale of such Junior Subordinated Debentures or Capital Securities may
be deemed to be underwriting discounts and commissions, under the Securities
Act. Underwriters and dealers may be entitled, under agreement with USB and the
applicable Issuer, to indemnification against and contribution toward certain
civil liabilities, including liabilities under the Securities Act, and to
reimbursement by USB for certain expenses.
 
    In connection with the offering of the Capital Securities, the Underwriters
may engage in transactions that stabilize, maintain or otherwise affect the
price of the Capital Securities during and after the offering. Specifically, the
Underwriters may over-allot or otherwise create a short position in the Capital
Securities for
their own account by selling more Capital Securities than have been sold to them
by the Company. The Underwriters may elect to cover any such short position by
purchasing Capital Securities in the open market. In addition, the Underwriters
may stabilize or maintain the price of the Capital Securities by bidding for or
purchasing Capital Securities in the open market and may impose penalty bids,
under which selling concessions allowed to syndicate members or other
broker-dealers participating in the offering are reclaimed if Capital Securities
previously distributed in the offering are repurchased in connection with
stabilization transactions or otherwise. The effect of these transactions may be
to stabilize or maintain the market price of the Capital Securities at a level
above that which might otherwise prevail in the open market. The imposition of a
penalty bid may also affect the price of the Capital Securities to the extent
that it discourages resales thereof. No representation is made as to the
magnitude or effect of any stabilization or other transactions. Such
transactions, if commenced, may be discontinued at any time.
 
    Underwriters and dealers may engage in transactions with, or perform
services for, USB and/or the applicable Issuer and/or any of their affiliates in
the ordinary course of business.
 
    The Junior Subordinated Debentures and the Capital Securities will be new
issues of securities and will have no established trading market. Any
underwriters to whom Junior Subordinated Debentures or Capital
Securities are sold for public offering and sale may make a market in such
Junior Subordinated Debentures and Capital Securities, but such underwriters
will not be obligated to do so and may discontinue any market making at any time
without notice. Such Junior Subordinated Debentures or Capital Securities may or
may not be listed on a national securities exchange or the Nasdaq National
Market. No assurance can be given as to the liquidity of or the existence of
trading markets for any Junior Subordinated Debentures or Capital Securities.
 
                                       35
<PAGE>
                             VALIDITY OF SECURITIES
 
    Unless otherwise indicated in the applicable Prospectus Supplement, certain
legal matters will be passed upon for USB and the Issuers by Dorsey & Whitney
LLP, Minneapolis, Minnesota, counsel to USB and for the Issuers by Richards,
Layton & Finger, P.A., Wilmington, Delaware, special Delaware counsel to the
Issuers. The validity of the Guarantees and the Junior Subordinated Debentures
will be passed upon for the Underwriters by Davis Polk & Wardwell, New York, New
York. Dorsey & Whitney LLP and Davis Polk & Wardwell will rely
on the opinion of Richards, Layton & Finger, P.A., Wilmington, Delaware as to
matters of Delaware law.
 
                                    EXPERTS
 
    The consolidated financial statements of FBS included in its Annual Report
on Form 10-K for the year ended December 31, 1996 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 have been incorporated herein by reference in reliance upon such
report given upon the authority of such firm as experts in accounting and
auditing.
 
    The supplemental consolidated financial statements of USB at December 31,
1996 and 1995, and for each
of the three years in the period ended December 31, 1996, appearing in USB's
Current Report on Form 8-K dated September 30, 1997, have been audited by Ernst
& Young LLP, independent auditors, as set forth in their report thereon and
incorporated herein by reference, which is based in part on the reports of
Deloitte & Touche LLP and, for the year ended December 31, 1994, Coopers &
Lybrand L.L.P., independent auditors, as set forth below. The supplemental
consolidated financial statements referred to above are included in reliance
upon such reports given upon the authority of such firms as experts in
accounting and auditing.
 
    The financial statements of Old USBC as of December 31, 1996 and 1995, and
for each of the three years
in the period ended December 31, 1996 (exclusive of the consolidated statements
of income, shareholders' equity and cash flows of West One Bancorp and
Subsidiaries for the year ended December 31, 1994), (prior to its combination
with FBS as of August 1, 1997), incorporated by reference in this prospectus
through the incorporation by reference of U.S. Bancorp's Current Report on Form
8-K dated September 30, 1997, have been audited by Deloitte & Touche LLP,
independent auditors, as stated in their report, which is incorporated herein by
reference, and have been so incorporated in reliance upon the report of such
firm given upon their authority as experts in accounting and auditing.
 
    The consolidated statements of income, shareholders' equity and cash flows
of West One Bancorp and subsidiaries for the year ended December 31, 1994,
incorporated by reference in this prospectus, have been incorporated herein in
reliance on the report of Coopers & Lybrand L.L.P., independent accountants,
given on the authority of that firm as experts in accounting and auditing.
 
                                       36
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
    NO DEALER, SALESPERSON OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED OR
INCORPORATED BY REFERENCE IN THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS IN
CONNECTION WITH THE OFFER MADE BY THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS
AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED
UPON AS HAVING BEEN AUTHORIZED BY USB, THE ISSUERS OR BY THE UNDERWRITERS.
NEITHER THE DELIVERY OF THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS NOR ANY
SALE MADE HEREUNDER AND THEREUNDER SHALL UNDER ANY CIRCUMSTANCE CREATE AN
IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF USB OR THE ISSUERS
SINCE THE DATE HEREOF. THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS DO NOT
CONSTITUTE AN OFFER OR SOLICITATION BY ANYONE IN ANY JURISDICTION IN WHICH SUCH
OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH OFFER
OR SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANYONE TO WHOM IT IS UNLAWFUL TO
MAKE SUCH OFFER OR SOLICITATION.
 
                                 --------------
 
                               TABLE OF CONTENTS
                                   PROSPECTUS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Available Information.....................................................    3
Incorporation of Certain Documents by Reference...........................    4
U.S. Bancorp..............................................................    5
The Issuers...............................................................    5
Use of Proceeds...........................................................    6
Ratio of Earnings to Fixed Charges........................................    6
Description of Junior Subordinated Debentures.............................    7
Description of Capital Securities.........................................   18
Book-Entry Issuance.......................................................   29
Description of Guarantees.................................................   31
Relationship Among the Capital Securities, the Corresponding Junior
  Subordinated Debentures and the Guarantees..............................   33
Plan of Distribution......................................................   35
Validity of Securities....................................................   36
Experts...................................................................   36
</TABLE>
 
                                 USB Capital II
                                USB Capital III
                                 USB Capital IV
                                 USB Capital V
 
                              Capital Securities,
                     fully and unconditionally guaranteed,
                            as described herein, by
 
                                  U.S. BANCORP
 
                               -----------------
 
                                   PROSPECTUS
 
                               -----------------
 
                                          , 1998
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission