HUNTINGTON BANCSHARES INC/MD
424B5, 1998-06-09
NATIONAL COMMERCIAL BANKS
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<PAGE>   1


                                               Filed Pursuant to Rule 424(b)(5)
                                               Registration No.333-53579
                                               Registration No.333-53579-01
PROSPECTUS SUPPLEMENT
 
(To Prospectus dated June 5, 1998)
                                                                            LOGO
 
                                  $100,000,000
                             Huntington Capital II
                   FLOATING RATE CAPITAL SECURITIES, SERIES B
 
                (Liquidation Amount $1,000 Per Capital Security)
     fully and unconditionally guaranteed to the extent described herein by
 
                       Huntington Bancshares Incorporated
                            ------------------------
 
     The Floating Rate Capital Securities, Series B (the "Series B Capital
Securities"), offered hereby represent beneficial interests in Huntington
Capital II, a statutory business trust formed under the laws of the State of
Delaware (the "Series B Trust"). Huntington Bancshares Incorporated, a Maryland
corporation (the "Corporation"), will be the owner of all of the beneficial
interests represented by common securities of the Series B Trust (the "Series B
Common Securities" and, collectively with the Series B Capital Securities, the
"Series B Securities"). The Series B Trust exists for the sole purpose of
issuing the Series B Securities and investing the proceeds of the Series B
Securities in the Floating Rate Junior Subordinated Debentures, Series B (the
"Series B Subordinated Debentures") to be issued by the Corporation.
                                                        (Continued on next page)
 
                            ------------------------
 
      SEE "RISK FACTORS" BEGINNING ON PAGE S-7 OF THIS PROSPECTUS SUPPLEMENT FOR
CERTAIN INFORMATION RELEVANT TO AN INVESTMENT IN THE SERIES B CAPITAL
SECURITIES.
                            ------------------------
 
  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.
 
  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.
 
                            ------------------------
 
<TABLE>
<CAPTION>
                                                                     UNDERWRITING
                                                                    DISCOUNTS AND            PROCEEDS TO THE
                                        PRICE TO PUBLIC(1)          COMMISSIONS(2)       SERIES B TRUST(1)(3)(4)
                                        ------------------          --------------       -----------------------
<S>                                  <C>                       <C>                       <C>
Per Series B Capital Security......          $988.45                     (3)                     $988.45
Total..............................        $98,845,000                   (3)                   $98,845,000
</TABLE>
 
- ---------------
  (1) Plus accumulated Distributions, if any, from June 12, 1998.
  (2) The Series B Trust and the Corporation have each agreed to indemnify the
      Underwriters against certain liabilities, including liabilities under the
      Securities Act of 1933, as amended. See "Underwriting."
  (3) In view of the fact that the proceeds of the sale of the Series B Capital
      Securities will be invested in the Series B Subordinated Debentures, the
      Corporation has agreed to pay to the Underwriters, as compensation for
      their arranging the investment therein of such proceeds, $10.00 per Series
      B Capital Security (or $1,000,000 in the aggregate). See "Underwriting."
  (4) Before deduction of expenses of the offering, payable by the Corporation,
      which are estimated to be $402,500.
 
                            ------------------------
 
     The Series B Capital Securities are offered, subject to prior sale, when,
as, and if accepted by the Underwriters and subject to approval of certain legal
matters by underwriters' counsel. It is expected that delivery of the Series B
Capital Securities will be made in book-entry form through the book-entry
facilities of The Depository Trust Company on or about June 12, 1998, against
payment therefor in immediately available funds.
 
                            ------------------------
 
MORGAN STANLEY DEAN WITTER                            CREDIT SUISSE FIRST BOSTON
 
June 5, 1998
<PAGE>   2
 
(cover page continued)
 
     CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN, OR OTHERWISE AFFECT THE PRICE OF THE SERIES B CAPITAL
SECURITIES. SPECIFICALLY, THE UNDERWRITERS MAY OVER-ALLOT IN CONNECTION WITH
THIS OFFERING, AND MAY BID FOR, AND PURCHASE, SUCH SERIES B CAPITAL SECURITIES
IN THE OPEN MARKET. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE "PLAN OF
DISTRIBUTION" IN THE ACCOMPANYING PROSPECTUS AND "UNDERWRITING" IN THIS
PROSPECTUS SUPPLEMENT.
                            ------------------------
 
     The Chase Manhattan Bank is the Property Trustee of the Series B Trust. The
Series B Subordinated Debentures will mature on June 15, 2028 (the "Stated
Maturity"). Each holder of a Series B Capital Security will have the right to
receive $1,000 per Series B Capital Security in the event of liquidation (the
"Liquidation Amount") and at maturity. The Series B Capital Securities will have
a preference under certain circumstances with respect to cash distributions and
amounts payable on liquidation, redemption, or otherwise over the Series B
Common Securities. See "Description of the Capital Securities -- Subordination
of Common Securities" in the accompanying Prospectus.
 
     The Series B Capital Securities will be represented by one or more global
securities registered in the name of a nominee of The Depository Trust Company,
as depositary (the "Depository"). Beneficial interests in the global securities
will be shown on, and transfer of such securities will be effected only through
records maintained by the Depository and its participants. Except as described
under "Description of the Capital Securities" in the accompanying Prospectus,
certificates for the Series B Capital Securities will not be issued and owners
of beneficial interests in global securities will not be considered holders of
the Series B Capital Securities. See also "Book-Entry Issuance" in the
accompanying Prospectus.
 
     Holders of the Series B Capital Securities will be entitled to receive
cumulative cash distributions accruing from the date of original issuance and
payable quarterly in arrears on the 15th day of March, June, September, and
December of each year, commencing September 15, 1998 at a variable annual rate
equal to 3-month LIBOR (as defined in this Prospectus Supplement) plus 0.625% on
the Liquidation Amount of $1,000 per Series B Capital Security
("Distributions"). The final Distributions will be payable on June 15, 2028. The
Distribution rate and the Distribution payment dates and other payment dates for
the Series B Capital Securities correspond to the interest rate and interest
payment dates and other payment dates on the Series B Subordinated Debentures,
which are the sole assets of the Series B Trust.
 
     The Corporation has guaranteed the payment of Distributions and payments on
liquidation of the Series B Trust or redemption of the Series B Capital
Securities, but only in each case to the extent of funds held by the Series B
Trust, as described in this Prospectus Supplement. See also "Description of the
Guarantees" in the accompanying Prospectus. If the Corporation does not make
interest payments on the Series B Subordinated Debentures held by the Series B
Trust, the Series B Trust will have insufficient funds to pay Distributions on
the Series B Capital Securities. The Corporation's obligations under the Series
B Guarantee (as defined below), taken together with its obligations under the
Series B Subordinated Debentures, the Series B Declaration, and the Indenture
(each as defined below), including its obligation to pay all costs, expenses,
and liabilities of the Series B Trust (other than with respect to the Series B
Capital Securities), constitute a full and unconditional guarantee of all of the
Series B Trust's obligations under the Series B Capital Securities. See
"Relationship Among the Capital Securities, the Corresponding Subordinated
Debentures, and the Guarantees" in the accompanying Prospectus. The obligations
of the Corporation under the Series B Guarantee and the Series B
 
                                       S-2
<PAGE>   3
 
Subordinated Debentures are unsecured and subordinate and junior in right of
payment to all Senior Indebtedness (as defined in "Description of the
Subordinated Debentures -- Subordination" in the accompanying Prospectus) of the
Corporation, are structurally subordinated to all liabilities and obligations of
the Corporation's subsidiaries, and will be pari passu with $200 million of
obligations of the Corporation associated with the Floating Rate Capital
Securities issued by Huntington Capital I (the "Outstanding Capital
Securities"). As of March 31, 1998, approximately $483.9 million aggregate
principal amount of Senior Indebtedness was outstanding, and the Corporation's
subsidiaries had approximately $24 billion of indebtedness and other liabilities
(including $17.7 billion of bank deposits). The terms of the Series B
Subordinated Debentures place no limitation on the amount of Senior Indebtedness
that may be incurred by the Corporation or on the amount of liabilities and
obligations of the Corporation's subsidiaries. See "Description of the
Subordinated Debentures -- Subordination" in the accompanying Prospectus.
 
     So long as no Indenture Event of Default (as defined in the accompanying
Prospectus) has occurred and is continuing, the Corporation has the right to
defer payment of interest on the Series B Subordinated Debentures at any time or
from time to time for a period not exceeding 20 consecutive quarters with
respect to each deferral period (each, an "Extension Period"), provided that no
Extension Period may extend beyond the Stated Maturity of the Series B
Subordinated Debentures. Upon the termination of any such Extension Period and
the payment of all amounts then due on any Interest Payment Date (as defined in
this Prospectus Supplement), the Corporation may elect to begin a new Extension
Period subject to the requirements set forth in the accompanying Prospectus.
Accordingly, there could be multiple Extension Periods of varying lengths
throughout the term of the Series B Subordinated Debentures.
 
     If interest payments on the Series B Subordinated Debentures are so
deferred, distributions on the Series B Capital Securities also will be deferred
and, subject to certain exceptions described in the accompanying Prospectus, the
Corporation may not, and may not permit any subsidiary of the Corporation to:
 
        - declare or pay any dividends or distributions on, or redeem, purchase,
          acquire, or make a liquidation payment with respect to, the
          Corporation's capital stock;
 
        - make any payment of principal, interest, or premium, if any, on or
          repay, repurchase, or redeem any debt securities that rank pari passu
          with or junior to the Series B Subordinated Debentures; or
 
        - make any guarantee payments with respect to any guarantee by the
          Corporation of the debt securities of any subsidiary of the
          Corporation if such guarantee ranks pari passu with or junior to the
          Series B Subordinated Debentures.
 
     During an Extension Period, interest on the Series B Subordinated
Debentures will continue to accrue (and the amount of Distributions to which
holders of the Series B Capital Securities are entitled will accumulate) at a
variable annual rate equal to 3-month LIBOR plus 0.625%, compounded quarterly
from the relevant payment date for such interest, and holders of the Series B
Capital Securities will be required to accrue interest income for United States
federal income tax purposes prior to receipt of the cash related to such
interest income. See "Certain Terms of the Series B Subordinated
Debentures -- Option to Defer Interest Payments" and "Certain United States
Federal Income Tax Consequences -- Interest Income and Original Issue Discount."
 
     The Series B Subordinated Debentures are redeemable prior to maturity at
the option of the Corporation, subject to the receipt of any necessary prior
approval from the Board of Governors of the Federal Reserve System (the "Federal
Reserve") (a) on or after June 15, 2008, in whole or in part, at a redemption
price equal to the principal amount of the
 
                                       S-3
<PAGE>   4
 
Series B Subordinated Debentures so redeemed plus the accrued and unpaid
interest on such Series B Subordinated Debentures to the redemption date, or (b)
at any time, in whole (but not in part), upon the occurrence and continuation of
a Special Event (as defined in the Prospectus), at such redemption price. The
Series B Capital Securities are subject to mandatory redemption, in whole or in
part, upon repayment of the Series B Subordinated Debentures at the Stated
Maturity or their earlier redemption, in an amount equal to the amount of
related Series B Subordinated Debentures maturing or being redeemed and at a
redemption price equal to the redemption price of such Series B Subordinated
Debentures, in each case plus accumulated and unpaid Distributions to the date
of redemption. See "Description of the Capital Securities -- Redemption" in the
accompanying Prospectus and "Certain Terms of the Series B Capital Securities --
Redemption."
 
     The Corporation will have the right at any time, subject to the receipt of
any necessary prior approval from the Federal Reserve, to dissolve the Series B
Trust and, after satisfaction of the claims of creditors of the Series B Trust,
if any, as provided by applicable law, cause the Series B Subordinated
Debentures to be distributed to the holders of the Series B Capital Securities
and the Series B Common Securities in liquidation of the Series B Trust. See
"Certain Terms of the Series B Capital Securities -- Liquidation of Series B
Trust and Distribution of Series B Subordinated Debentures."
 
     In the event of the liquidation of the Series B Trust, after satisfaction
of the claims of creditors of the Series B Trust, if any, as required by
applicable law, the holders of the Series B Capital Securities will be entitled
to receive a Liquidation Amount of $1,000 per Series B Capital Security plus
accumulated and unpaid Distributions to the date of payment, which may be in the
form of a distribution of such amount in Series B Subordinated Debentures as
described above. If such Liquidation Amount can be paid only in part because the
Series B Trust has insufficient assets available to pay in full the aggregate
Liquidation Amount, then the amounts payable directly by the Series B Trust on
the Series B Capital Securities shall be paid on a pro rata basis. The holder(s)
of the Series B Common Securities will be entitled to receive distributions upon
any such liquidation pro rata with the holders of the Series B Capital
Securities, except that if an Indenture Event of Default has occurred and is
continuing, the Series B Capital Securities will have a priority over the Series
B Common Securities. "Description of the Capital Securities -- Liquidation
Distribution Upon Dissolution" in the accompanying Prospectus.
 
     If the purchaser is using for its purchase of the Series B Capital
Securities the assets of an employee benefit plan subject to Title I of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA") or of a
plan or individual retirement account subject to Section 4975 of the Internal
Revenue Code of 1986, as amended (the "Tax Code" and any such employee benefit
plan, plan, or individual retirement account, an "ERISA Plan"), the purchase
shall constitute a representation by such person as to certain matters relating,
generally, to the relationship of the Corporation to the ERISA Plan and the
availability of an exemption from the prohibited transaction rules under ERISA
and the Tax Code. See "Benefit Plan Considerations."
 
     The information in this Prospectus Supplement supplements and should be
read in conjunction with the information contained in the accompanying
Prospectus. As used in this Prospectus Supplement, (a) the "Indenture" means the
Junior Subordinated Indenture, as amended and supplemented from time to time,
between the Corporation and The Chase Manhattan Bank, as trustee (the "Indenture
Trustee"), and (b) the "Series B Declaration" means the Amended and Restated
Declaration relating to the Series B Trust among the Corporation, as Sponsor,
The Chase Manhattan Bank, as Property Trustee (the "Property Trustee"), Chase
Manhattan Bank Delaware, as Delaware Trustee (the "Delaware Trustee"), and the
Regular Trustees (as defined in the accompanying
 
                                       S-4
<PAGE>   5
 
Prospectus) who are named in the Series B Declaration (collectively, with the
Property Trustee and Delaware Trustee, the "Declaration Trustees"). Each of the
other capitalized terms used in this Prospectus Supplement and not otherwise
defined in this Prospectus Supplement has the meaning set forth in the
accompanying Prospectus.
 
     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED OR INCORPORATED BY REFERENCE IN THIS
PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS, AND, IF GIVEN OR MADE,
SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED BY THE CORPORATION, THE SERIES B TRUST, OR THE UNDERWRITERS. NEITHER
THE DELIVERY OF THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS NOR
ANY SALES UNDER THESE DOCUMENTS SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY
IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE CORPORATION OR
THE SERIES B TRUST SINCE THE DATE OF THIS PROSPECTUS SUPPLEMENT OR THAT THE
INFORMATION CONTAINED IN THESE DOCUMENTS IS CORRECT AS OF ANY TIME SUBSEQUENT TO
ITS DATE. THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS DO NOT
CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY
SECURITIES OTHER THAN THE SERIES B CAPITAL SECURITIES OR ANY OFFER TO SELL OR
THE SOLICITATION OF AN OFFER TO BUY SUCH SERIES B CAPITAL SECURITIES IN ANY
CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS UNLAWFUL.
 
                                       S-5
<PAGE>   6
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
                      PROSPECTUS SUPPLEMENT

Cautionary Statement Concerning Forward-Looking
  Statements................................................   S-6
Risk Factors................................................   S-7
Huntington Capital II.......................................  S-12
The Corporation.............................................  S-12
Use of Proceeds.............................................  S-12
Capitalization..............................................  S-13
Ratio of Earnings to Fixed Charges..........................  S-14
Accounting Treatment........................................  S-14
Certain Terms of the Series B Capital Securities............  S-15
Certain Terms of the Series B Subordinated Debentures.......  S-18
Certain Terms of the Series B Guarantee.....................  S-21
Certain United States Federal Income Tax Consequences.......  S-23
Benefit Plan Considerations.................................  S-30
Underwriting................................................  S-32
Validity of Securities......................................  S-33
 
                            PROSPECTUS
Available Information.......................................     4
Incorporation of Certain Documents By Reference.............     4
The Trusts..................................................     5
The Corporation.............................................     7
Use of Proceeds.............................................     8
Description of the Subordinated Debentures..................     8
Description of the Capital Securities.......................    21
Description of the Guarantees...............................    32
Relationship Among the Capital Securities, the Corresponding
  Subordinated Debentures, and the Guarantees...............    34
Book-Entry Issuance.........................................    36
Plan of Distribution........................................    38
Validity of Securities......................................    39
Experts.....................................................    39
</TABLE>
 
                            ------------------------
 
           CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS
 
    Certain statements contained in documents incorporated by reference in this
Prospectus Supplement and the accompanying Prospectus and certain other
statements made under the captions "Risk Factors," "The Corporation," and "Use
of Proceeds" contain forward-looking statements within the meaning of the
Private Securities Litigation Reform Act of 1995 that are subject to numerous
assumptions, risks, and uncertainties. Actual results could differ materially
from those contained in or implied by the Corporation's statements for a variety
of factors including: changes in economic conditions, movements in interest
rates, competitive pressures on product pricing and services, success and timing
of business strategies, the successful integration of acquired businesses, the
nature and extent of governmental actions and reforms, and extended disruption
of vital infrastructure. Such forward-looking statements should be viewed as
strategic objectives rather than absolute predictions of future performance.
 
                                       S-6
<PAGE>   7
 
                                  RISK FACTORS
 
     Prospective purchasers of the Series B Capital Securities should carefully
review the information contained elsewhere in this Prospectus Supplement and the
accompanying Prospectus and should particularly consider the following matters.
In addition, because holders of Series B Capital Securities may receive Series B
Subordinated Debentures in exchange for such Series B Capital Securities upon
liquidation of the Series B Trust, prospective purchasers of Series B Capital
Securities also are making an investment decision with regard to the Series B
Subordinated Debentures and should carefully review all the information
regarding the Series B Subordinated Debentures.
 
     Certain statements in this Prospectus Supplement and the accompanying
Prospectus and documents incorporated in these documents by reference are
forward-looking and are identified by the use of forward-looking words or
phrases such as "intended," "expects," is or are "expected," "anticipates," and
"anticipated." These forward-looking statements are based on the Corporation's
current expectations. To the extent any of the information contained or
incorporated by reference in this Prospectus constitutes a "forward-looking
statement" as defined in Section 21E(i)(1) of the Exchange Act, the risk factors
set forth below are cautionary statements identifying important factors that
could cause actual results to differ materially from those in the
forward-looking statement.
 
RANKING OF SUBORDINATED OBLIGATIONS UNDER THE SERIES B GUARANTEE AND
THE SERIES B SUBORDINATED DEBENTURES
 
     The obligations of the Corporation under the Series B Guarantee issued by
the Corporation for the benefit of the holders of Series B Capital Securities
and under the Series B Subordinated Debentures are unsecured and rank
subordinate and junior in right of payment to all Senior Indebtedness of the
Corporation and pari passu with the Corporation's obligations associated with
the Outstanding Capital Securities. At March 31, 1998, the Senior Indebtedness
of the Corporation aggregated approximately $483.9 million.
 
     Because the Corporation is a holding company, the right of the Corporation
to participate in any distributions 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 that the
Corporation may itself be recognized as a creditor of that subsidiary. There are
various legal limitations on the extent to which certain of the Corporation's
subsidiaries may extend credit, pay dividends, or otherwise supply funds to, or
engage in transactions with, the Corporation. Accordingly, the Series B
Subordinated Debentures will effectively be subordinated to all existing and
future liabilities of the Corporation's subsidiaries and holders of the Series B
Subordinated Debentures should look only to the assets of the Corporation for
payments on the Series B Subordinated Debentures.
 
     The ability of the Series B Trust to pay amounts due on the Series B
Capital Securities is solely dependent upon the Corporation making payments on
the Series B Subordinated Debentures as and when required.
 
     None of the Indenture, the Series B Guarantee, nor the Series B Declaration
places any limitation on the amount of secured or unsecured Senior Indebtedness
that may be incurred by the Corporation or on the amount of liabilities and
obligations of the Corporation's subsidiaries. The Corporation expects from time
to time to incur additional indebtedness constituting Senior Indebtedness. See
"Description of the Guarantees -- Status of the Guarantee" and "Description of
the Series B Subordinated Debentures -- Subordination" in the accompanying
Prospectus.
 
ENFORCEMENT OF CERTAIN RIGHTS BY HOLDERS OF SERIES B CAPITAL SECURITIES
 
     If a Trust Enforcement Event (as defined in the accompanying Prospectus)
occurs and is continuing, then the holders of Series B Capital Securities would
rely on the enforcement by the Property Trustee of its rights as a holder of the
Series B Subordinated Debentures against the Corporation. The holders of a
majority in Liquidation Amount of the Series B Capital Securities will have the
right to direct the time, method, and place of conducting any proceeding for any
remedy available to the Property Trustee or to direct the exercise of any trust
or power
 
                                       S-7
<PAGE>   8
 
conferred upon the Property Trustee under the Series B Declaration, including
the right to direct the Property Trustee to exercise the remedies available to
it as a holder of the Series B Subordinated Debentures.
 
     If the Property Trustee fails to enforce its rights with respect to the
Series B Subordinated Debentures held by the Series B Trust, any record holder
of Series B Capital Securities may, to the fullest extent permitted by law,
institute legal proceedings directly against the Corporation to enforce the
Property Trustee's rights under such Series B Subordinated Debentures without
first instituting any legal proceedings against such Property Trustee or any
other person or entity.
 
     If the Corporation were to default on its obligation to pay amounts payable
under the Series B Subordinated Debentures, the Series B Trust would lack funds
for the payment of Distributions or amounts payable on redemption of the Series
B Capital Securities or otherwise, and, in such event, holders of the Series B
Capital Securities would not be able to rely upon the Series B Guarantee for
payment of such amounts. However, in the event the Corporation failed to pay
interest on or principal of the Series B Subordinated Debentures on the payment
date on which such payment is due and payable, then a holder of Series B Capital
Securities may institute a proceeding directly against the Corporation under the
Indenture for enforcement of payment to such holder of the interest on or
principal of Series B Subordinated Debentures having a principal amount equal to
the aggregate Liquidation Amount of the Series B Capital Securities of such
holder (a "Direct Action"). In connection with such Direct Action, the
Corporation will be subrogated to the rights of such holder of Series B Capital
Securities under the Series B Declaration to the extent of any payment made by
the Corporation to such holder of Series B Capital Securities in such Direct
Action.
 
     Except as described in this Prospectus Supplement or the accompanying
Prospectus, holders of Series B Capital Securities will not be able to exercise
directly any other remedy available to the holders of Series B Subordinated
Debentures or assert directly any other rights in respect of the Series B
Subordinated Debentures. See "Description of the Capital Securities -- Trust
Enforcement Events," "Description of the Guarantees" and "Description of the
Subordinated Debentures -- Indenture Events of Default" and "-- Enforcement of
Certain Rights by Holders of Capital Securities" in the accompanying Prospectus.
The Series B Declaration provides that each holder of Series B Capital
Securities by acceptance of such Series B Capital Securities agrees to the
provisions of the Series B Guarantee and the Indenture.
 
OPTION TO DEFER INTEREST PAYMENTS; TAX CONSEQUENCES
 
     So long as no Indenture Event of Default has occurred or is continuing, the
Corporation has the right under the Indenture to defer the payment of interest
on the Series B Subordinated Debentures at any time or from time to time for a
period not exceeding 20 consecutive quarters, provided that no Extension Period
may extend beyond the Stated Maturity of the Series B Subordinated Debentures.
As a consequence of any such deferral, Distributions on the Series B Capital
Securities by the Series B Trust will be deferred during any such Extension
Period but would continue to accumulate at a variable annual rate equal to
3-month LIBOR plus 0.625%, compounded quarterly during any such Extension
Period.
 
     During any such Extension Period, the Corporation may not, and may not
permit any subsidiary of the Corporation to:
 
        - declare or pay any dividends or distributions on, or redeem, purchase,
          acquire, or make a liquidation payment with respect to, the
          Corporation's capital stock, or
 
        - make any payment of principal, interest, or premium, if any, on or
          repay, repurchase, or redeem any debt securities that rank pari passu
          with or junior to the Series B Subordinated Debentures, or
 
        - make any guarantee payments with respect to any guarantee by the
          Corporation of the debt securities of any subsidiary of the
          Corporation if such guarantee ranks pari passu with or junior to the
          Series B Subordinated Debentures.
 
     There are permitted exceptions to this covenant. See "Certain Terms of the
Series B Capital Securities -- Distributions."
 
                                       S-8
<PAGE>   9
 
     Prior to the termination of any such Extension Period, the Corporation may
further extend the Extension Period, provided that no Extension Period may
exceed 20 consecutive quarters or extend beyond the Stated Maturity of the
Series B Subordinated Debentures. Upon the termination of any Extension Period
and the payment of all amounts then due on any Interest Payment Date, the
Corporation may elect to begin a new Extension Period subject to the above
requirements. See "Certain Terms of the Capital Securities -- Distributions" and
"Certain Terms of the Subordinated Debentures -- Option to Defer Interest
Payments."
 
     Should the Corporation defer payment of interest on the Series B
Subordinated Debentures, a holder of Series B Capital Securities will be
required to accrue income (in the form of original issue discount ("OID") which
will include both stated interest and the de minimis OID on the Series B
Subordinated Debentures) for United States federal income tax purposes in
respect of its pro rata share of the Series B Subordinated Debentures held by
the Series B Trust. As a result, a holder of Series B Capital Securities will be
required to include such interest income in gross income for United States
federal income tax purposes in advance of the receipt of cash attributable to
such interest income, and will not receive the cash related to such income from
the Series B Trust if the holder disposes of the Series B Capital Securities
prior to the record date for the payment of Distributions with respect to such
Extension Period. See "Certain United States Federal Income Tax
Consequences -- Interest Income and Original Issue Discount" and "-- Sales of
Series B Capital Securities."
 
     The Corporation has no current intention of exercising its right to defer
payments of interest by extending the interest payment period on the Series B
Subordinated Debentures. However, should the Corporation elect to exercise such
right in the future, the market price of the Series B Capital Securities is
likely to be adversely affected. A holder that disposes of its Series B Capital
Securities during an Extension Period, therefore, might not receive the same
return on its investment as a holder that continues to hold its Series B Capital
Securities. In addition, as a result of the Corporation's right to defer
interest payments, the market price of the Series B Capital Securities (which
represent preferred undivided beneficial interests in the Series B Subordinated
Debentures) may be more volatile than the market prices of other similar
securities where the issuer does not have such right to defer interest payments.
 
SPECIAL EVENT REDEMPTION; POSSIBLE TAX LAW CHANGES
 
     Upon the occurrence and continuation of a Special Event, the Corporation
has the right, subject to any necessary prior approval of the Federal Reserve,
to redeem the Series B Subordinated Debentures in whole (but not in part) within
90 days following the occurrence of such Special Event and thereby cause a
mandatory redemption of the Series B Capital Securities and Series B Common
Securities. A "Special Event" means a Tax Event, a Regulatory Capital Event, or
an Investment Company Event (each as defined in the accompanying Prospectus).
 
     Prospective investors should be aware that Enron Corporation has filed a
petition in Tax Court challenging the proposed disallowance by the Internal
Revenue Service of the deduction of interest expense on securities issued by
Enron Corporation in 1993 and 1994 that are similar to, although different in a
number of respects from, the Series B Subordinated Debentures. It is possible
that a decision in that case would give rise to a Tax Event, which would permit
the Corporation to cause a redemption of the Capital Securities, as described
more fully under "Description of the Capital Securities -- Redemption" in the
accompanying Prospectus.
 
     Legislation was proposed by the United States Department of Treasury on
February 6, 1997, as part of President Clinton's Fiscal 1998 Budget Proposal
(the "1998 Budget Proposal") that contained a provision which, if adopted as
proposed, would have had the effect of prohibiting the Corporation from
deducting the interest paid on the Series B Subordinated Debentures which, in
turn, would have triggered a "Tax Event" (see below). On August 5, 1997, the
Taxpayer Relief Act of 1997 (the "Act") was signed by President Clinton. The Act
did not adopt the tax law changes that would have denied the interest deduction
as originally contained in the 1998 Budget Proposal. In addition, President
Clinton's Fiscal 1999 Budget Proposal does not contain a provision similar to
that contained in the 1998 Budget Proposal that would deny deductions for
interest paid on the Series B Subordinated Debentures.
 
     Even though the most recent Executive and Congressional action does not
attempt to incorporate the provisions from the 1998 Budget Proposal concerning
the disallowance of interest deductions on long-term debt
 
                                       S-9
<PAGE>   10
 
obligations not treated as indebtedness on the issuer's balance sheet, there can
be no assurance that future legislative proposals or final legislation will not
adversely affect the ability of the Corporation to deduct interest on the Series
B Subordinated Debentures or otherwise affect the tax treatment of the
transactions described in this Prospectus Supplement and the Prospectus. Such
legislation could give rise to a Tax Event, which would permit the Corporation
to cause a redemption of the Series B Capital Securities, as described more
fully in the accompanying Prospectus under the caption "Description of the
Capital Securities  -- Redemption -- Special Event Redemption."
 
LIQUIDATION DISTRIBUTION OF SERIES B SUBORDINATED DEBENTURES
 
     The Corporation will have the right at any time, subject to any necessary
prior approval of the Federal Reserve if such approval is then required under
applicable capital guidelines or policies of the Federal Reserve, to dissolve
the Series B Trust and, after satisfaction of the claims of creditors of the
Trust, if any, as provided by applicable law, cause the Series B Subordinated
Debentures to be distributed to the holders of the Series B Trust Securities in
liquidation of the Series B Trust.
 
     Under current United States federal income tax law and interpretations of
such law and assuming, as expected, the Series B Trust is treated as a grantor
trust for United States federal income tax purposes and not an association
taxable as a corporation, a distribution by the Series B Trust of the Series B
Subordinated Debentures pursuant to a liquidation of the Series B Trust will not
be a taxable event to the Series B Trust or to holders of the Series B Capital
Securities, and will result in a holder of the Series B Capital Securities
receiving directly such holder's pro rata share of the Series B Subordinated
Debentures (previously held indirectly through the Series B Trust). If, however,
the liquidation of the Series B Trust were to occur because the Series B Trust
is subject to United States federal income tax with respect to income accrued or
received on the Series B Subordinated Debentures as a result of the occurrence
of a Tax Event or otherwise, the distribution of Series B Subordinated
Debentures to holders of the Series B Capital Securities by the Series B Trust
could be a taxable event to the Series B Trust and each such holder. In that
event, the holders of the Series B Capital Securities may be required to
recognize gain or loss as if they had exchanged their Series B Capital
Securities for the Series B Subordinated Debentures they receive upon the
liquidation of the Series B Trust. See "Certain United States Federal Income Tax
Consequences -- Distribution of the Series B Subordinated Debentures or Cash
Upon Liquidation of the Series B Trust."
 
     There can be no assurance as to the market prices for Series B Capital
Securities or Series B Subordinated Debentures that may be distributed in
exchange for Series B Capital Securities if a liquidation of the Series B Trust
occurs. Accordingly, the Series B Capital Securities that an investor may
purchase, whether pursuant to the Offering or in the secondary market, or the
Series B Subordinated Debentures that a holder of Series B Capital Securities
may receive on liquidation of the Series B Trust, may trade at a discount to the
price that the investor paid to purchase the Series B Capital Securities.
Because holders of Series B Capital Securities may receive Series B Subordinated
Debentures upon a dissolution of the Trust, prospective purchasers of Series B
Capital Securities also are making an investment decision with regard to the
Series B Subordinated Debentures and should carefully review all the information
regarding the Series B Subordinated Debentures contained in this Prospectus
Supplement and the accompanying Prospectus. See "Certain Terms of the Series B
Subordinated Debentures" in this Prospectus Supplement and "Description of the
Subordinated Debenture" in the accompanying Prospectus.
 
LIMITED VOTING RIGHTS
 
     Holders of Series B Capital Securities generally will have limited voting
rights relating only to the modification of the Series B Capital Securities and
certain other matters described in this Prospectus Supplement and the
accompanying Prospectus. Holders of Series B Capital Securities will not be
entitled to vote to appoint, remove, or replace any of the Declaration Trustees,
which voting rights are vested exclusively in the holder of the Series B Common
Securities, unless an Indenture Event of Default shall have occurred and is
continuing. If an Indenture 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 Regular
 
                                      S-10
<PAGE>   11
 
Trustees, which voting rights are vested exclusively in the Corporation as the
holder of the Common Securities. The Declaration Trustees and the Corporation
may amend the Series B Declaration without the consent of holders of Series B
Capital Securities to ensure that the Series B Trust will be classified as a
grantor trust for United States federal income tax purposes unless such action
adversely affects the interests of such holders. See "Description of the Capital
Securities -- Voting Rights; Amendment of Each Declaration" and "-- Removal of
Declaration Trustees" in the accompanying Prospectus.
 
ABSENCE OF PUBLIC MARKET
 
     There is no existing market for the Series B Capital Securities and there
can be no assurance as to the liquidity of any markets that may develop for the
Series B Capital Securities, the ability of the holders to sell their Series B
Capital Securities, or at what price holders of the Series B Capital Securities
will be able to sell their Series B Capital Securities. Future trading prices of
the Series B Capital Securities will depend on many factors including, among
other things, prevailing interest rates, the Corporation's operating results,
and the market for similar securities. The Underwriters have advised the Series
B Trust and the Corporation that the Underwriters intend to make a market in the
Series B Capital Securities offered by this Prospectus; however, the
Underwriters are not obligated to do so, and any such market making activity
will be subject to the limits imposed by applicable law and may be discontinued
at any time without notice. Therefore, there can be no assurance that an active
market for the Series B Capital Securities will develop. If a trading market for
the Series B Capital Securities does develop, the Series B Capital Securities
may trade at a discount from their initial offering price depending upon
prevailing interest rates, the market for similar securities, the performance of
the Corporation, and other factors.
 
                                      S-11
<PAGE>   12
 
                             HUNTINGTON CAPITAL II
 
     The Series B Trust is a statutory business trust created under the Delaware
Business Trust Act, as amended, pursuant to the Series B Declaration and the
filing of a certificate of trust with the Secretary of State of the State of
Delaware on May 21, 1998. The Corporation will acquire the Series B Common
Securities in an aggregate Liquidation Amount equal to $3,093,000, which will be
3% of the total capital of the Series B Trust.
 
     The Series B Trust exists for the exclusive purpose of (a) issuing and
selling the Series B Trust Securities representing undivided beneficial
ownership interests in the assets of the Trust, (b) investing the gross proceeds
of the Series B Trust Securities in the Series B Subordinated Debentures, and
(c) engaging in only those other activities necessary or incidental thereto.
Accordingly, the assets of the Series B Trust will consist solely of the Series
B Subordinated Debentures.
 
     The Series B Trust's business and affairs are conducted by the Declaration
Trustees, consisting of three Regular Trustees, who are employees or officers of
or who are affiliated with the Corporation; The Chase Manhattan Bank, as
Property Trustee; and Chase Manhattan Bank Delaware, which maintains its
principal place of business in the State of Delaware, as Delaware Trustee. The
Chase Manhattan Bank also acts as the Guarantee Trustee and the Indenture
Trustee.
 
     The location of the principal executive office of the Series B Trust is c/o
Huntington Bancshares Incorporated, Huntington Center, 41 South High Street,
Columbus, Ohio 43287, and its telephone number is 614-480-8300. See "The Trusts'
in the accompanying Prospectus.
 
                                THE CORPORATION
 
     Huntington was incorporated in Maryland in 1966 and is a multi-state bank
holding company headquartered in Columbus, Ohio. Its subsidiaries conduct a
full-service commercial and consumer banking business, engage in mortgage
banking, lease financing, trust services, discount brokerage services,
underwriting credit life and disability insurance, and issuing commercial paper
guaranteed by the Corporation, and provide other financial products and
services. See "The Corporation" in the accompanying Prospectus.
 
                                USE OF PROCEEDS
 
     All of the proceeds from the sale of Series B Capital Securities will be
invested by the Series B Trust in Series B Subordinated Debentures. All of the
net proceeds to be received by the Corporation from the sale of the Series B
Subordinated Debentures will used for general corporate purposes, which may
include the repayment of existing indebtedness, investments in, or extensions of
credit to, its subsidiaries, the financing of possible acquisitions, and for
general working capital. Pending such use, the net proceeds may be temporarily
invested.
 
     The Corporation is required by the Federal Reserve to maintain certain
levels of capital for bank regulatory purposes. In 1996, the Federal Reserve
announced that cumulative preferred securities having the characteristics of the
Series B Capital Securities could be included as Tier 1 capital for bank
holdings companies. Such Tier 1 Capital treatment, together with the
Corporation's ability to deduct, for federal income tax purposes, interest
payable on the Series B Subordinated Debentures, will provide the Corporation
with a more cost-effective means of obtaining capital for bank regulatory
purposes than other Tier 1 capital alternatives currently available to it.
 
                                      S-12
<PAGE>   13
 
                                 CAPITALIZATION
 
     The following table sets forth the consolidated capitalization of the
Corporation and its subsidiaries as of March 31, 1998, and as adjusted to give
effect to the consummation of the Offering and the Branch Acquisition (as
defined in the Prospectus). The following data should be read in conjunction
with the consolidated financial statements and notes to such financial
statements of the Corporation and its subsidiaries incorporated by reference in
the accompanying Prospectus. See "Incorporation of Certain Documents by
Reference" in the accompanying Prospectus. Also shown below are certain
consolidated regulatory capital ratios of the Corporation and its subsidiaries
at March 31, 1998, and as adjusted to give effect to the consummation of the
Offering and the Branch Acquisition.
 
<TABLE>
<CAPTION>
                                                                   MARCH 31, 1998
                                                              -------------------------
                                                                ACTUAL      AS ADJUSTED
                                                              ----------    -----------
                                                               (DOLLARS IN THOUSANDS)
<S>                                                           <C>           <C>
Long-term debt(1):
  Direct obligations of the Corporation.....................  $  283,854    $  283,854
  Obligations of the Corporation's subsidiaries.............   2,637,150     2,937,150(2)
                                                              ----------    ----------
         Total long-term debt...............................   2,921,004     3,221,004
                                                              ----------    ----------
  Company-obligated mandatorily redeemable preferred capital
    securities of subsidiary trusts:
         Huntington Capital I...............................     200,000       200,000(3)
         Huntington Capital II..............................          --       100,000(4)
                                                              ----------    ----------
         Total Company-obligated mandatorily redeemable
          preferred capital securities of subsidiary
          trusts............................................     200,000       300,000
                                                              ----------    ----------
Shareholders' equity:
  Preferred stock -- authorized 6,617,808 shares; none
    outstanding
  Common stock -- without par value; authorized
    300,000,000(5) shares; issued and outstanding
    193,279,797 shares......................................   1,528,768     1,528,768
  Treasury stock -- 961,290 shares..........................     (25,218)      (25,218)
  Capital surplus...........................................     394,715       394,715
  Net unrealized gains on securities available for sale.....      10,410        10,410
  Retained earnings.........................................     165,419       165,419
                                                              ----------    ----------
         Total shareholders' equity.........................   2,074,094     2,074,094
                                                              ----------    ----------
         Total capitalization...............................  $5,195,098    $5,595,098
                                                              ==========    ==========
Consolidated regulatory capital ratios(6):
  Tier 1 capital to risk-adjusted assets....................        8.91%         6.66%
  Total capital to risk-adjusted assets.....................       11.57%        10.53%
  Tier 1 leverage...........................................        7.72%         5.74%
</TABLE>
 
- ---------------
 
(1) Includes medium-term senior note obligations with original maturities one
    year or greater.
 
(2) Adjusted to give effect to the issuance of $100 million of Tier 2-qualifying
    subordinated debt on June 1, 1998, and the expected issuance of an
    additional $200 million of Tier 2-qualifying subordinated debt on or before
    June 30, 1998, by the Corporation's primary bank subsidiary.
 
(3) On January 31, 1997, Huntington Capital I issued $200 million of
    company-obligated mandatorily redeemable preferred capital securities. All
    of the common securities of Huntington Capital I are owned by the
    Corporation. The proceeds from the issuance of such capital securities and
    common securities were used by Huntington Capital I to purchase from the
    Corporation $206.2 million of Floating Rate Junior Subordinated Debentures.
    The subordinated debentures are the sole assets of Huntington Capital I,
    bear interest at a variable annual rate equal to 3-month LIBOR plus .70%,
    and mature on February 1, 2027.
 
(4) Adjusted to reflect the sale of the Series B Capital Securities. The Series
    B Trust will hold the Series B Subordinated Debentures as its sole asset.
    The Corporation will own all of the Series B Common Securities of the Series
    B Trust.
 
(5) On April 28, 1998, the Corporation's Charter was amended to increase the
    authorized Common Stock of the Corporation from 300,000,000 shares to
    500,000,000 shares.
 
(6) Adjusted to give effect to the consummation of the Offering, the issuance of
    $100 million of Tier 2-qualifying subordinated debt on June 1, 1998, and the
    expected issuance of an additional $200 million of Tier 2-qualifying
    subordinated debt on or before June 30, 1998, by the Corporation's primary
    bank subsidiary, and the Branch Acquisition. See "The Corporation -- Recent
    and Pending Acquisitions" in the Prospectus. Tier 1 capital consists of
    common equity, retained earnings, capital securities, and a limited amount
    of qualifying perpetual preferred stock less certain intangibles. Total
    capital consists of Tier 1 capital and subordinated debt, qualifying
    preferred stock, and a limited amount of the loan loss allowance. The
    Leverage ratio is defined as the ratio of Tier 1 capital divided by adjusted
    average quarterly assets. The Federal Reserve has issued capital ratio and
    leverage ratio guidelines for bank holding companies such as the
    Corporation. The minimum regulatory requirements for the Tier 1 capital
    ratio, Total capital ratio, and Tier 1 leverage ratio are 4.00%, 8.00%, and
    3.00%, respectively.
 
                                      S-13
<PAGE>   14
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
     The Corporation's consolidated ratios of earnings to fixed charges for each
of the periods indicated are set forth below (unaudited):
 
<TABLE>
<CAPTION>
                                         PERIOD ENDED
                                          MARCH 31,               YEARS ENDED DECEMBER 31,
                                        --------------    ----------------------------------------
                                        1998     1997     1997     1996     1995     1994     1993
                                        -----    -----    -----    -----    -----    -----    ----
<S>                                     <C>      <C>      <C>      <C>      <C>      <C>      <C>
Earnings to Fixed Charges:
  Excluding Interest on Deposits....     2.50     2.43     2.45     2.48     2.31     3.24    3.98
  Including Interest on Deposits....     1.53     1.51     1.48     1.51     1.50     1.74    1.77
</TABLE>
 
     For purposes of computing the ratios of earnings to fixed charges, earnings
represent net income plus applicable income taxes and fixed charges. Fixed
charges, excluding interest on deposits, represent interest expense (except
interest on deposits), and one-third of rental expense (which is deemed
representative of the interest factor). Fixed charges, including interest on
deposits, represent the foregoing items plus interest on deposits.
 
                              ACCOUNTING TREATMENT
 
     For financial reporting purposes, the Series B Trust will be treated as a
subsidiary of the Corporation and, accordingly, the accounts of the Series B
Trust will be included in the consolidated financial statements of the
Corporation. The Series B Capital Securities will be presented in the
consolidated balance sheet of the Corporation as part of a separate line item
entitled "Company-obligated mandatorily redeemable preferred capital securities
of subsidiary trusts" and appropriate disclosures about the Series B Capital
Securities, the Series B Guarantee, and the Series B Subordinated Debentures
will be included in the notes to the consolidated financial statements of the
Corporation. For financial reporting purposes, the Corporation will record
Distributions payable on the Series B Capital Securities as interest expense in
its consolidated statement of income.
 
     The Corporation has agreed that future financial reports of the Corporation
will:
 
        - present the capital securities issued by other Trusts on the
          Corporation's balance sheet as a separate line item (which will
          include the Series B Capital Securities and the Outstanding Capital
          Securities) entitled "Company-obligated mandatorily redeemable
          preferred capital securities of subsidiary trusts;"
 
        - include in a footnote to the financial statements disclosure that the
          sole assets of the trusts are subordinated debentures of the
          Corporation (specifying as to each trust the principal amount,
          interest rate, and maturity date of the subordinated debentures held);
          and
 
        - include, in a footnote to the audited financial statements, disclosure
          that:
 
           - the trusts are wholly owned,
 
           - the sole assets of the trusts are the subordinated debentures
             (specifying as to each trust the principal amount, interest rate,
             and maturity date of the subordinated debentures held), and
 
           - the obligations of the Corporation under the subordinated
             debentures, the relevant Indenture, Declaration, and Guarantee, in
             the aggregate, constitute a full and unconditional guarantee by the
             Corporation of such trust's obligations under the preferred capital
             securities issued by such trust.
 
                                      S-14
<PAGE>   15
 
                CERTAIN TERMS OF THE SERIES B CAPITAL SECURITIES
 
     The following summary of certain terms and provisions of the Series B
Capital Securities supplements the description of the terms and provisions of
the Capital Securities set forth in the accompanying Prospectus under the
heading "Description of the Capital Securities." This summary of certain terms
and provisions of the Series B Capital Securities does not purport to be
complete and is subject to, and qualified in its entirety by reference to, the
Series B Declaration.
 
DISTRIBUTIONS
 
     Distributions on each Series B Capital Security will be payable in U.S.
dollars at a variable annual rate equal to 3-month LIBOR plus 0.625% (which is
the same rate payable on the Series B Subordinated Debentures) on the
Liquidation Amount of $1,000, payable quarterly in arrears on the 15th day of
March, June, September, and December of each year. Distributions will accumulate
from the date of original issuance. In the event that any date on which
Distributions are payable on the Series B Capital Securities is not a Business
Day (as defined in the accompanying Prospectus), then payment of the
Distributions payable on such date will be made on the next succeeding day that
is a Business Day (and without any additional Distributions or other payment in
respect of 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 either case with the same force and
effect as if made on the date such payment was originally payable (each date on
which Distributions are payable in accordance with the foregoing, a
"Distribution Date"). The first Distribution Date will be September 15, 1998.
The amount of Distributions payable for any period will be computed on the basis
of the actual number of days elapsed in a 360-day year of twelve 30-day months.
 
     Distributions on the Series B Capital Securities (other than distributions
on a Redemption Date (as defined in the accompanying Prospectus)) will be
payable to the holders of such Series B Capital Securities as they appear on the
register of the Series B Trust on the relevant record dates. The record dates
for the Series B Capital Securities will be, for so long as the Series B Capital
Securities remain in book-entry form, one Business Day prior to the Distribution
Date and, in the event the Series B Capital Securities are not in book-entry
form, the last day of the month preceding the relevant Distribution Date.
 
     So long as no Indenture Event of Default has occurred and is continuing,
the Corporation will have the right under the Indenture to defer the payment of
interest on the Series B Subordinated Debentures at any time or from time to
time for a period not exceeding 20 consecutive quarters, provided that no
Extension Period may extend beyond the Stated Maturity of the Series B
Subordinated Debentures. As a consequence of any such deferral, Distributions on
the Series B Capital Securities will be deferred by the Series B Trust during
any such Extension Period. Distributions to which holders of the Series B
Capital Securities are entitled will accumulate and compound quarterly at a
variable annual rate equal to 3-month LIBOR plus 0.625% from the relevant
payment date for such Distributions. The term "Distributions" as used in this
Prospectus Supplement and the Prospectus shall include any such compounded
amounts unless the context otherwise requires.
 
     During any such Extension Period, the Corporation may not, and may not
permit any subsidiary of the Corporation to:
 
        - declare or pay any dividends or distributions on, or redeem, purchase,
          acquire, or make a liquidation payment with respect to, the
          Corporation's capital stock, or
 
        - make any payment of principal, interest, or premium, if any, on or
          repay, repurchase, or redeem any debt securities that rank pari passu
          with or junior to the Series B Subordinated Debentures, or
 
        - make any guarantee payments with respect to any guarantee by the
          Corporation of the debt securities of any subsidiary of the
          Corporation if such guarantee ranks pari passu with or junior to the
          Series B Subordinated Debentures.
 
     The following are permitted exceptions to this covenant:
 
        - repurchases, redemptions, or other acquisitions of shares of capital
          stock of the Corporation in connection with any employment contract,
          benefit plan, or other similar arrangement with or for the
 
                                      S-15
<PAGE>   16
 
          benefit of any one or more employees, officers, directors, or
          consultants, or in connection with a dividend reinvestment or
          stockholder stock purchase plan or in connection with the issuance of
          common stock (or securities convertible into or exchangeable for
          common stock) as consideration in an acquisition transaction that was
          entered into prior to the commencement of such Extension Period);
 
        - as a result of an exchange or conversion of any class or series of the
          Corporation's capital stock (or any capital stock of a subsidiary of
          the Corporation) for any other class or series of the Corporation's
          capital stock or of any class or series of the Corporation's
          indebtedness for any class or series of the Corporation's capital
          stock;
 
        - the purchase of fractional interests in shares of the Corporation's
          capital stock pursuant to the conversion or exchange provisions of
          such capital stock or the security being converted or exchanged;
 
        - any declaration of a dividend in connection with any stockholders'
          rights plan, or the issuance of rights, stock, or other property under
          any stockholders' rights plan, or the redemption or repurchase of
          rights pursuant to such plan; or
 
        - any dividend in the form of stock, warrants, options, or other rights
          where the dividend stock or the stock issuable upon exercise of such
          warrants, options, or other rights is the same stock as that on which
          the dividend is being paid (or ranks pari passu with or junior to such
          stock).
 
     Prior to the termination of any such Extension Period, the Corporation may
further extend the Extension Period, provided that no Extension Period may
exceed 20 consecutive quarters or extend beyond the Stated Maturity of the
Series B Subordinated Debentures. Upon the termination of any Extension Period
and the payment of all amounts then due on any Interest Payment Date (including
interest at a variable annual rate equal to 3-month LIBOR plus 0.625%,
compounded quarterly, to the extent permitted by law), the Corporation may elect
to begin a new Extension Period subject to the above requirements. See "Certain
Terms of the Series B Subordinated Debentures -- Option to Defer Interest
Payments" and "Certain United States Federal Income Tax Consequences -- Interest
Income and Original Issue Discount."
 
     The Corporation has no current intention of exercising its right to defer
payments of interest by extending the interest payment period on the Series B
Subordinated Debentures.
 
REDEMPTION
 
     Upon the repayment or redemption, in whole or in part, of the Series B
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 Series B Capital Securities upon not less
than 30 nor more than 60 days' notice prior to the date fixed for repayment or
redemption at a redemption price (with respect to the Series B Capital
Securities, the "Redemption Price") equal to the aggregate Liquidation Amount of
such Series B Capital Securities plus accumulated and unpaid Distributions to
the date of redemption (the "Redemption Date"). See "Description of the Capital
Securities -- Redemption" in the accompanying Prospectus. For a description of
the Stated Maturity and redemption provisions of the Series B Subordinated
Debentures, see "Certain Terms of the Series B Subordinated
Debentures -- General" and "-- Redemption." If less than all of the Series B
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 Series B Capital Securities and the Series B Common
Securities.
 
LIQUIDATION OF SERIES B TRUST AND DISTRIBUTION OF SERIES B SUBORDINATED
DEBENTURES
 
     The Corporation will have the right at any time to dissolve the Series B
Trust and, after satisfaction of liabilities to creditors of the Series B Trust
as provided by applicable law, to cause the Series B Subordinated Debentures to
be distributed to the holders of the Series B Capital Securities in exchange.
Such right is subject to
 
                                      S-16
<PAGE>   17
 
the Corporation's having received prior approval of the Federal Reserve, if then
required under applicable capital guidelines or policies.
 
     Under current United States Federal income tax law, a distribution of
Series B Subordinated Debentures in exchange for Series B Capital Securities
should not be a taxable event to holders of the Series B Capital Securities.
Should there be a change in law, a change in legal interpretation, a Special
Event, or other circumstances, however, the distribution of the Series B
Subordinated Debentures could be a taxable event to holders of the Series B
Capital Securities. See "Certain Federal Income Tax Consequences -- Distribution
of Series B Subordinated Debentures or Cash Upon Liquidation of the Series B
Trust." If the Corporation elects neither to redeem the Series B Subordinated
Debentures prior to maturity nor to liquidate the Series B Trust and distribute
the Series B Subordinated Debentures to the holders of the Series B Capital
Securities in exchange, the Series B Capital Securities will remain outstanding
until the Stated Maturity of the Series B Subordinated Debentures.
 
     If the Corporation elects to dissolve the Series B Trust causing the Series
B Subordinated Debentures to be distributed to holders of the Series B Capital
Securities in exchange upon liquidation of the Series B Trust, the Corporation
shall continue to have the right to redeem the Series B Subordinated Debentures
as described under "Certain Terms of Series B Subordinated
Debentures -- Redemption."
 
LIQUIDATION VALUE
 
     The amount payable on the Series B Capital Securities in the event of any
liquidation of the Series B Trust is $1,000 per Series B Capital Security plus
accumulated and unpaid Distributions, which may be in the form of a distribution
of a Like Amount in Series B Subordinated Debentures, subject to certain
exceptions. See "Description of the Capital Securities -- Liquidation
Distribution Upon Dissolution" in the accompanying Prospectus.
 
REGISTRATION OF SERIES B CAPITAL SECURITIES
 
     The Series B Capital Securities will be represented by global certificates
registered in the name of the Depository or its nominee. Beneficial interests in
the Series B Capital Securities will be shown on, and transfers will be effected
only through, records maintained by the Depository's Participants (as defined in
the accompanying Prospectus). Except as described below and in the accompanying
Prospectus, Series B Capital 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 Series B Capital Securities
registered in the names of persons other than the Depository or its nominee only
if:
 
        - the Depository notifies the Series B Trust that it is unwilling or
          unable to continue as a depository for such global security and no
          successor depository shall have been appointed,
 
        - at any time the Depository ceases to be a clearing agency registered
          under the Exchange Act, at a time when the Depository is required to
          be so registered to act as such depository,
 
        - the Series B Trust in its sole discretion determines that such global
          security shall be so exchangeable, or there shall have occurred and be
          continuing an Indenture Event of Default with respect to the Series B
          Subordinated Debentures.
 
     Any global security that is exchangeable pursuant to any of these events
shall be exchangeable for definitive certificates registered in such names as
the Depository shall direct. It is expected that such instructions will be based
upon directions received by the Depository from its Participants with respect to
ownership of beneficial interests in such global security. In the event that
Series B Capital Securities are issued in definitive form, such Series B Capital
Securities will be in denominations of $1,000 and integral multiples thereof and
may be transferred or exchanged at the offices described below.
 
     Payments on Series B Capital Securities represented by a global security
will be made to the Depository, as the depositary for the Series B Capital
Securities. In the event Series B Capital Securities are issued in certificated
 
                                      S-17
<PAGE>   18
 
form, the Liquidation Amount and Distributions will be payable, the transfer of
the Series B Capital Securities will be registrable, and Series B Capital
Securities will be exchangeable for Series B Capital Securities of other
denominations of a like aggregate Liquidation Amount, at the corporate office of
the Property Trustee in New York, New York, or at the offices of any paying
agent or transfer agent appointed by the Regular Trustees, provided that payment
of any Distribution may be made at the option of the Regular Trustees by check
mailed to the address of the persons so entitled or by wire transfer. In
addition, if the Series B Capital Securities are issued in certificated form,
the record dates for payment of Distributions will be the last day of the month
preceding the month in which the relevant Distribution payment is scheduled to
be made. For a description of the Depository and the terms of the depositary
arrangements relating to payments, transfers, voting rights, redemptions, and
other matters, see "Book-Entry Issuance" in the accompanying Prospectus.
 
             CERTAIN TERMS OF THE SERIES B SUBORDINATED DEBENTURES
 
     The following summary of certain terms and provisions of the Series B
Subordinated Debentures supplements the description of the terms and provisions
of the Corresponding Junior Subordinated Debentures set forth in the
accompanying Prospectus under the heading "Description of the Subordinated
Debentures." The summary of certain terms and provisions of the Series B
Subordinated Debentures set forth below does not purport to be complete and is
subject to, and is qualified in its entirety by reference to, the Indenture. The
form of Indenture has been filed as an exhibit to the Registration Statement.
 
GENERAL
 
     Concurrently with the issuance of the Series B Capital Securities, the
Series B Trust will invest the proceeds of such Series B Capital Securities and
the consideration paid by the Corporation for the Series B Common Securities in
the Series B Subordinated Debentures issued by the Corporation. The Series B
Subordinated Debentures will be issued as a series of junior subordinated
debentures under the Indenture. The Series B Subordinated Debentures will mature
on June 15, 2028 (the "Stated Maturity").
 
     The Series B Subordinated Debentures will be unsecured and will rank junior
and be subordinate in right of payment to all Senior Indebtedness of the
Corporation and will be pari passu with $200 million of obligations of the
Corporation associated with the Outstanding Capital Securities. The Indenture
does not limit the incurrence or issuance of other secured or unsecured debt of
the Corporation, whether under the Indenture or any existing or other indenture
that the Corporation may enter into in the future or otherwise. See "Description
of the Subordinated Debentures -- Subordination" in the accompanying Prospectus.
The Indenture does not limit the aggregate principal amount of Series B
Subordinated Debentures that may be issued under the Indenture.
 
INTEREST
 
     The Series B Subordinated Debentures will bear interest at a variable
annual rate equal to 3-month LIBOR plus 0.625% on the principal amount of such
Series B Capital Securities, payable quarterly in arrears on the 15th day of
March, June, September, and December of each year (each, an "Interest Payment
Date"), commencing September 15, 1998, to the person in whose name each
Subordinated Debenture is registered on the close of business on the record date
preceding such Interest Payment Date. The amount of interest payable for any
period will be computed on the basis of the actual number of days elapsed in a
360-day year of twelve 30-day months.
 
     In the event that any Interest Payment Date is not a Business Day, such
Interest Payment Date will be postponed until the next succeeding 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 is in the next succeeding calendar
year, payment of such interest shall be made on the immediately preceding
Business Day, in either case 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 such
amount (to the extent permitted by law) at a variable annual rate equal to
3-month LIBOR plus 0.625%, compounded quarterly. The term "interest" as used in
this Prospectus Supplement shall include quarterly interest payments, interest
on quarterly interest payments not paid on the applicable Interest Payment Date,
and any Additional Sums, as applicable. Interest on the Series B Subordinated
Debentures shall accrue from June 12, 1998.
 
                                      S-18
<PAGE>   19
 
     As described in the accompanying Prospectus, if the Series B Trust is
required to pay any additional taxes, duties, or other governmental charges as a
result of a Tax Event, the Corporation will pay as Additional Sums on the Series
B Subordinated Debentures such amounts as shall be required in order that the
Distributions then due and payable by a Trust on the outstanding Trust
Securities of such Trust shall not be reduced as a result of any additional
taxes, duties, and other governmental charges. See "Description of the Capital
Securities -- Redemption -- Special Event Redemption" in the accompanying
Prospectus.
 
DETERMINATION OF 3-MONTH LIBOR
 
     The Chase Manhattan Bank, as Calculation Agent (the "Calculation Agent"),
will calculate the interest rate for each quarterly interest period based on
3-month LIBOR determined as of two London Business Days (defined as any day,
other than a Saturday or Sunday, on which banks are open for business in London)
prior to the first day of such interest period (each, a "Determination Date").
"3-month LIBOR" means, with respect to a quarterly interest period relating to
an Interest Payment Date, the London interbank offered rate for three-month,
Eurodollar deposits determined in the following order of priority:
 
          (a) the rate (expressed as a percentage per annum) for Eurodollar
     deposits having a three-month maturity that appears on Telerate Page 3750
     as of 11:00 a.m. (London time) on the related Determination Date;
 
          (b) if such rate does not appear on Telerate Page 3750 as of 11:00
     a.m. (London time) on the related Determination Date, 3-month LIBOR will be
     the arithmetic mean (if necessary rounded upwards to the nearest whole
     multiple of .00001%) of the rates (expressed as percentages per annum) for
     Eurodollar deposits having a three-month maturity that appear on Reuters
     Monitor Money Rates Page LIBO ("Reuters Page LIBO") as of 11:00 a.m.
     (London time) on such Determination Date;
 
          (c) if such rate does not appear on Reuters Page LIBO as of 11:00 a.m.
     (London time) on the related Determination Date, the Calculation Agent will
     request the principal London offices of four leading banks in the London
     interbank market to provide such banks' offered quotations (expressed as
     percentages per annum) to prime banks in the London interbank market for
     Eurodollar deposits having a three-month maturity as of 11:00 a.m. (London
     time) on such Determination Date. If at least two quotations are provided,
     3-month LIBOR will be the arithmetic mean (if necessary rounded upwards to
     the nearest whole multiple of .00001%) of such quotations;
 
          (d) if fewer than two such quotations are provided as requested in
     clause (c) above, the Calculation Agent will request four major New York
     City banks to provide such banks' offered quotations (expressed as
     percentages per annum) to leading European banks for loans in Eurodollars
     as of 11:00 a.m. (London time) on such Determination Date. If at least two
     such quotations are provided, 3-month LIBOR will be the arithmetic mean (if
     necessary rounded upwards to the nearest whole multiple of .00001%) of such
     quotations; and
 
          (e) if fewer than two such quotations are provided as requested in
     clause (d) above, 3-month LIBOR will be 3-month LIBOR determined with
     respect to the interest period immediately preceding such current interest
     period.
 
     If the rate for Eurodollar deposits having a three-month maturity that
initially appears on Telerate Page 3750 or Reuters Page LIBO, as the case may
be, as of 11:00 a.m. (London time) on the related Determination Date is
superseded on Telerate Page 3750 or Reuters Page LIBO, as the case may be, by a
corrected rate before 12:00 noon (London time) on such Determination Date, the
corrected rate as so substituted on the applicable page will be the applicable
3-month LIBOR for such Determination Date.
 
     Absent manifest error, the Calculation Agent's determination of 3-month
LIBOR and its calculation of the applicable interest rate for each interest
period will be final and binding. Investors may obtain the interest rates for
the current and preceding interest period by writing or calling Corporate Trust
Administration at the Calculation Agent at The Chase Manhattan Bank, 450 West
33rd Street, New York, New York 10001.
 
                                      S-19
<PAGE>   20
 
OPTION TO DEFER INTEREST PAYMENTS
 
     So long as no Indenture Event of Default has occurred and is continuing,
the Corporation has the right under the Indenture at any time or from time to
time during the term of the Series B Subordinated Debentures to defer the
payment of interest for a period not exceeding 20 consecutive quarterly periods
with respect to each Extension Period, provided that no Extension Period may
extend beyond the Stated Maturity of the Series B Subordinated Debentures. At
the end of such Extension Period, the Corporation must pay all interest then
accrued and unpaid (together with interest at a variable annual rate equal to
3-month LIBOR plus 0.625%, compounded quarterly to the extent permitted by
applicable law). During an Extension Period, interest will continue to accrue
and holders of Series B Subordinated Debentures (or holders of Series B Capital
Securities while the Series B Capital Securities are outstanding) will be
required to accrue interest income for United States federal income tax
purposes. See "Certain United States Federal Income Tax Consequences -- Interest
Income and Original Issue Discount."
 
     During any such Extension Period, the Corporation may not, and may not
permit any subsidiary of the Corporation to:
 
        - declare or pay any dividends or distributions on, or redeem, purchase,
          acquire, or make a liquidation payment with respect to, the
          Corporation's capital stock, or
 
        - make any payment of principal, interest, or premium, if any, on or
          repay, repurchase, or redeem any debt securities that rank pari passu
          with or junior to the Series B Subordinated Debentures, or
 
        - make any guarantee payments with respect to any guarantee by the
          Corporation of the debt securities of any subsidiary of the
          Corporation if such guarantee ranks pari passu with or junior to the
          Series B Subordinated Debentures.
 
     The following are permitted exceptions to this covenant:
 
        - repurchases, redemptions, or other acquisitions of shares of capital
          stock of the Corporation in connection with any employment contract,
          benefit plan, or other similar arrangement with or for the benefit of
          any one or more employees, officers, directors, or consultants, or in
          connection with a dividend reinvestment or stockholder stock purchase
          plan or in connection with the issuance of common stock (or securities
          convertible into or exchangeable for common stock) as consideration in
          an acquisition transaction that was entered into prior to the
          commencement of such Extension Period);
 
        - as a result of an exchange or conversion of any class or series of the
          Corporation's capital stock (or any capital stock of a subsidiary of
          the Corporation) for any other class or series of the Corporation's
          capital stock or of any class or series of the Corporation's
          indebtedness for any class or series of the Corporation's capital
          stock;
 
        - the purchase of fractional interests in shares of the Corporation's
          capital stock pursuant to the conversion or exchange provisions of
          such capital stock or the security being converted or exchanged;
 
        - any declaration of a dividend in connection with any stockholders'
          rights plan, or the issuance of rights, stock, or other property under
          any stockholders' rights plan, or the redemption or repurchase of
          rights pursuant to such plan; or
 
        - any dividend in the form of stock, warrants, options, or other rights
          where the dividend stock or the stock issuable upon exercise of such
          warrants, options, or other rights is the same stock as that on which
          the dividend is being paid (or ranks pari passu with or junior to such
          stock).
 
     Prior to the termination of any such Extension Period, the Corporation may
further extend the Extension Period, provided that no Extension Period may
exceed 20 consecutive quarters or extend beyond the Stated Maturity of the
Series B Subordinated Debentures. Upon the termination of any Extension Period
and the payment of all amounts then due on any Interest Payment Date, the
Corporation may elect to begin a new Extension Period subject to the above
requirements. No interest shall be due and payable during an Extension
 
                                      S-20
<PAGE>   21
 
Period, except at the end of such Extension Period. The Corporation must give
the Property Trustee, the Regular Trustees, and the Indenture Trustee notice of
its election of such Extension Period not less than one Business Day prior to
the record date for the first Distribution to be deferred pursuant to this
option. The Property Trustee shall give notice of the Corporation's election to
begin a new Extension Period to the holders of the Series B Capital Securities.
 
REDEMPTION
 
     The Series B Subordinated Debentures are redeemable prior to maturity at
the option of the Corporation, subject to the receipt of any necessary prior
approval of the Federal Reserve, (a) on or after June 15, 2008, in whole or in
part at any time, or (b) at any time in whole (but not in part), within 90 days
of the occurrence of a Special Event. In either case, the redemption price will
be equal to the principal amount of the Series B Subordinated Debentures so
redeemed plus accrued and unpaid interest, if any, to the date fixed for
redemption. See "Description of the Subordinated Debentures -- Redemption" in
the accompanying Prospectus.
 
DISTRIBUTIONS OF SERIES B SUBORDINATED DEBENTURES
 
     As described under "Certain Terms of the Series B Capital
Securities -- Liquidation of Series B Trust and Distribution of Series B
Subordinated Debentures," under certain circumstances involving the dissolution
of the Series B Trust, Series B Subordinated Debentures may be distributed to
the holders of the Series B Capital Securities in exchange upon liquidation of
the Series B Trust after satisfaction of liabilities to creditors of the Series
B Trust as provided by applicable law. If distributed to holders of Series B
Capital Securities, the Series B Subordinated Debentures will initially be
issued in the form of one or more global securities and the Depository, or any
successor depositary for the Series B Capital Securities, will act as depositary
for the Series B Subordinated Debentures. It is anticipated that the depositary
arrangements for the Series B Subordinated Debentures would be substantially
identical to those in effect for the Series B Capital Securities. There can be
no assurance as to the market price of any Series B Subordinated Debentures that
may be distributed to the holders of Series B Capital Securities. For a
description of global securities and certificated securities, see "Book-Entry
Issuance" in the accompanying Prospectus.
 
REGISTRATION OF SERIES B SUBORDINATED DEBENTURES
 
     The Series B Subordinated Debentures will be registered in the name of the
Series B Trust. In the event that the Series B Subordinated Debentures are
distributed to the holders of Series B Capital Securities, it is anticipated
that the depositary and other arrangements for the Series B Subordinated
Debentures will be substantially identical to those in effect for the Series B
Capital Securities, as applicable. See "Certain Terms of the Series B Capital
Securities -- Registration of Series B Capital Securities."
 
                    CERTAIN TERMS OF THE SERIES B GUARANTEE
 
     The Series B Guarantee will be executed and delivered by the Corporation
concurrently with the issuance by the Series B Trust of the Series B Capital
Securities for the benefit of the holders from time to time of such Series B
Capital Securities. The Chase Manhattan Bank will act as Guarantee Trustee under
the Series B Guarantee. The Series B Guarantee will be qualified as an indenture
under the Trust Indenture Act.
 
     This summary of certain provisions of the Series B 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 Series B Guarantee, including the
definitions in the Series B Guarantee of certain terms. The Guarantee Trustee
will hold the Series B Guarantee for the benefit of the holders of the Series B
Capital Securities.
 
                                      S-21
<PAGE>   22
 
GUARANTEE PAYMENTS
 
     The Series B Guarantee guarantees to the holders of the Series B Capital
Securities the following payments, to the extent not paid by the Series B Trust:
 
        - any accumulated and unpaid Distributions required to be paid on the
          Series B Capital Securities, to the extent that the Series B Trust has
          funds available for such payment at such time,
 
        - the Redemption Price with respect to any Series B Capital Securities
          called for redemption, to the extent that the Series B Trust has funds
          available for such payment at such time, and
 
        - upon a voluntary or involuntary dissolution, winding-up, or
          liquidation of the Series B Trust (unless the Series B Subordinated
          Debentures are distributed to holders of the Series B Capital
          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 Series B Trust has funds available therefor at
          such time, and (b) the amount of assets of the Series B Trust
          remaining available for distribution to holders of the Series B
          Capital Securities after payment of creditors of the Series B Trust as
          required by applicable law.
 
ENFORCEMENT
 
     The holders of not less than a majority in aggregate Liquidation Amount of
the Series B 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 the Series B Guarantee or to direct the exercise of any
trust or power conferred upon the Guarantee Trustee under the Series B
Guarantee. Any holder of the Series B Capital Securities may institute a legal
proceeding directly against the Corporation to enforce its rights under the
Series B Guarantee without first instituting a legal proceeding against the
Trust, the Guarantee Trustee, or any other person or entity.
 
     If the Corporation were to default on its obligation to pay amounts under
the Series B Subordinated Debentures, the Series B Trust would lack funds for
the payment of Distributions on the Series B Capital Securities or amounts
payable on redemption of the Series B Capital Securities or otherwise. In such
event, holders of the Series B Capital Securities would not be able to rely upon
the Series B Guarantee for payment of such amounts. Instead, if any event of
default under the Indenture shall have occurred and be continuing and such event
is attributable to the failure of the Corporation to pay interest or premium, if
any, on or principal of the Series B Subordinated Debentures on the applicable
payment date, then a holder of Series B Capital Securities may institute a
Direct Action against the Corporation pursuant to the terms of the Indenture for
enforcement of payment to such holder of the principal of or interest or
premium, if any, on such Series B Subordinated Debentures having a principal
amount equal to the aggregate Liquidation Amount of the Series B Capital
Securities of such holder. In connection with such Direct Action, the
Corporation will have a right to set-off under the Indenture to the extent of
any payment made by the Corporation to such holder of Series B Securities in the
Direct Action. Except as described in this Prospectus Supplement, holders of
Series B Capital Securities will not be able to exercise directly any other
remedy available to the holders of the Series B Subordinated Debentures or
assert directly any other rights in respect of the Series B Subordinated
Debentures. See "Description of the Guarantees" in the accompanying Prospectus.
The Series B Declaration provides that each holder of Series B Capital
Securities by acceptance of the Series B Capital Securities agrees to the
provisions of the Series B Guarantee and the Indenture.
 
     The Series B Guarantee will rank subordinate and junior in right of payment
to all Senior Indebtedness of the Corporation and will be pari passu with $200
million of obligations of the Corporation associated with the Outstanding
Capital Securities to the same extent as the Subordinated Debenture. See
"Description of the Guarantees -- Status of the Guarantee" in the accompanying
Prospectus. The Series B Guarantee does not limit the incurrence or issuance of
other secured or unsecured debt of the Corporation, whether under the Indenture
or any existing or other indenture that the Corporation may enter into in the
future or otherwise.
 
     The Corporation has, through the Series B Guarantee, the Series B
Subordinated Debentures, and the Indenture, taken together, fully and
unconditionally guaranteed all of the Trust's obligations under the Series B
Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other
 
                                      S-22
<PAGE>   23
 
documents constitutes such guarantee. It is only the combined operation of these
documents that has the effect of providing a full and unconditional guarantee of
the Trust's obligations under the Series B Capital Securities. See "Relationship
Among the Capital Securities, the Corresponding Subordinated Debentures, and the
Guarantees" in the accompanying Prospectus.
 
             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES
 
     In the opinion of Porter, Wright, Morris & Arthur, in its capacity as
special tax counsel to the Corporation and the Series B Trust ("Tax 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 the Series B Capital Securities. Unless otherwise stated, this
summary deals only with Series B Capital Securities held as capital assets by
United States Persons (defined below) who purchase the Series B Capital
Securities upon original issuance at their original offering price. As used in
this Prospectus, a "United States Person" means:
 
        - a person that is a citizen or resident of the United States for
          federal income tax purposes,
 
        - a corporation, partnership, or other entity created or organized in or
          under the laws of the United States or any political subdivision of
          the United States,
 
        - an estate the income of which is subject to United States federal
          income taxation regardless of its source, or
 
        - any trust if a court within the United States is able to exercise
          primary supervision over the administration of such trust and one or
          more United States fiduciaries have the authority to control all the
          substantial decisions of such trust.
 
     The tax treatment of a holder may vary depending on its particular
situation. This summary does not address all the tax consequences that may be
relevant to a particular holder or to holders that may be subject to special tax
treatment, such as banks, thrift institutions, real estate investment trusts,
regulated investment companies, insurance companies, traders in securities that
elect to mark to market, brokers and dealers in securities or currencies,
tax-exempt investors, persons whose functional currency is not the U.S. dollar,
or persons holding the Series B Capital Securities as a position in a
"straddle," as part of a "hedging," "conversion," or other integrated
investment. In addition, this summary does not address any description of any
alternative minimum tax consequences, the tax laws of any state, local, or
foreign government that may be applicable to a holder of Series B Capital
Securities, or the income tax consequences to shareholders in, or partners or
beneficiaries of, a holder of the Series B Capital Securities.
 
     This summary is based on the Tax Code, the Treasury regulations promulgated
under the Tax Code, and administrative and judicial interpretations of Tax Code,
each as of the date of this Prospectus, all of which are subject to change,
possibly on a retroactive basis. The authorities on which this summary is based
are subject to various interpretations, and the opinions of Tax Counsel are not
binding on the Internal Revenue Service ("IRS") or the courts, either of which
could take a contrary position. Moreover, no rulings have been or will be sought
from the IRS with respect to the transactions described in this Prospectus.
Accordingly, there can be no assurance that the IRS will not challenge the
opinions expressed in this Prospectus 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 SERIES B
CAPITAL 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 SERIES B
CAPITAL SECURITIES UPON THE OCCURRENCE OF CERTAIN TAX EVENTS SEE "DESCRIPTION OF
THE CAPITAL SECURITIES -- REDEMPTION -- SPECIAL EVENT REDEMPTION OR DISTRIBUTION
OF SERIES B SUBORDINATED DEBENTURES" IN THE ACCOMPANYING PROSPECTUS.
 
                                      S-23
<PAGE>   24
 
CLASSIFICATION OF THE SERIES B TRUST
 
     In connection with the issuance of the Series B Capital Securities, Tax
Counsel will render an opinion generally to the effect that, under current law
and based upon certain representations, facts, and assumptions and assuming full
compliance with the terms of the Series B Declaration and other documents, the
Series B Trust should be classified as a grantor trust and will not be
classified as an association taxable as a corporation for United States federal
income tax purposes. Accordingly, for United States federal income tax purposes,
each holder of Series B Capital Securities should be treated as owning an
undivided beneficial interest in the Series B Subordinated Debentures and, thus,
should be required to include in its gross income its pro rata share of interest
income or OID that is paid or accrued on the Series B Subordinated Debentures
whether or not cash is actually distributed to the holders of the Series B
Capital Securities.
 
CLASSIFICATION OF THE SERIES B SUBORDINATED DEBENTURES
 
     The Corporation, the Trust, and the holders of the Series B Capital
Securities (by the acceptance of a beneficial interest in a Series B Capital
Security) will agree to treat the Series B Subordinated Debentures as
indebtedness for all United States federal income tax purposes. In connection
with the issuance of the Series B Subordinated Debentures, Tax Counsel will
render an opinion generally to the effect that, under then current law, and
based upon certain representations, facts, and assumptions, the Series B
Subordinated Debentures will be classified as indebtedness of the Corporation
for United States federal income tax purposes.
 
INTEREST INCOME AND ORIGINAL ISSUE DISCOUNT
 
     Under the applicable Treasury regulations, the Series B Subordinated
Debentures will not be treated as issued with OID within the meaning of section
1273(a) of the Tax Code because the Corporation has concluded, and this
discussion assumes, that as of the date of this Prospectus the likelihood of its
exercising its right to defer payments of interest is remote. Accordingly,
except as set forth below, stated interest on the Series B Subordinated
Debentures generally will be taxable to a holder as ordinary income at the time
it is paid or accrued in accordance with such holder's regular method of tax
accounting.
 
     If, however, the Corporation exercises its right to defer payments of
interest on the Series B Subordinated Debentures, the Series B Subordinated
Debentures would be treated as redeemed and reissued for OID purposes at such
time and all holders of the Series B Subordinated Debentures and, consequently,
holders of the Series B Capital Securities, will be required to accrue their pro
rata share of OID (which will include both the stated interest and the de
minimis OID on the Series B Subordinated Debentures) on a daily economic accrual
basis during the Extension Period even though the Corporation will not pay such
interest until the end of the Extension Period, and even though some holders may
use the cash method of tax accounting. Moreover, thereafter, the Series B
Subordinated Debentures will be taxed as OID instruments for as long as they
remain outstanding. Thus, even after the end of an Extension Period, all holders
would be required to continue to include the stated interest (and the de minimis
OID) on the Series B Subordinated Debentures in income on a daily basis,
regardless of their method of tax accounting and in advance of receipt of the
cash attributable to such interest income. Under the OID economic accrual rules,
a holder would accrue an amount of interest income each year that approximates
the stated interest payments called for under the terms of the Series B
Subordinated Debentures, and subsequent actual cash payments of interest on the
Series B Subordinated Debentures would not be reported separately as taxable
income. Any amount of OID included in a holder's gross income (whether or not
during an Extension Period) with respect to a Series B Capital Security will
increase such holder's tax basis in such Series B Capital Security, and the
amount of Distributions received by a holder in respect of such accrued OID will
reduce the tax basis of such Series B Capital Security.
 
     In the absence of the Corporation's election to defer an interest payment
period, de minimis OID would not be subject to income tax until a holder's
Series B Subordinated Debentures were sold, redeemed, or retired, in which event
the de minimis OID would increase any gain or decrease any loss recognized by
the holder. In general, de minimis OID will be present with respect to the
Series B Subordinated Debentures, in an amount equal to the excess of (a) the
stated redemption price at maturity (as defined for income tax purposes) of the
Series B Subordinated Debentures, over (b) the issue price of the Series B
Subordinated Debentures, unless such
 
                                      S-24
<PAGE>   25
 
amount is greater than or equal to the product of (x) 0.25% of the redemption
price, and (y) the number of complete calendar years from the Series B
Subordinated Debentures' issue date to its maturity.
 
     If the Corporation's option to defer payments of interest were not treated
as remote, the Series B Subordinated Debentures would be treated as initially
issued with OID in an amount equal to the aggregate stated interest over the
term of the Series B Subordinated Debentures, plus the amount of de minimis OID
on the Series B Subordinated Debentures. That OID would generally be includible
in a United States Person's taxable income, over the term of the Series B
Subordinated Debentures, on an economic accrual basis.
 
     The Treasury regulations described above have not yet been addressed in any
rulings or other interpretations by the IRS, and it is possible that the IRS
could take a contrary position. If the IRS were to assert successfully that the
stated interest on the Series B Subordinated Debentures was OID regardless of
whether the Corporation exercises its option to defer payments of interest on
such debentures, all holders of Series B Capital Securities would be required to
include such stated interest in income on a daily economic accrual basis as
described above.
 
     Corporate holders of Series B Capital Securities will not be entitled to a
dividends-received deduction with respect to any income recognized by such
holders with respect to the Series B Capital Securities.
 
DISTRIBUTION OF SERIES B SUBORDINATED DEBENTURES OR CASH UPON LIQUIDATION OF THE
SERIES B TRUST
 
     As described under the caption "Description of the Capital Securities
 -- Liquidation Distribution Upon Dissolution," Series B Subordinated Debentures
may be distributed to holders in exchange for the Series B Capital Securities
and in liquidation of the Series B Trust. Under current law, such a distribution
would be non-taxable for United States federal income tax purposes, and will
result in the holder receiving directly its pro rata share of the Series B
Subordinated Debentures previously held indirectly through the Trust, with a
holding period and aggregate tax basis equal to the holding period and aggregate
tax basis such holder had in its Series B Capital Securities before such
distribution. A holder would accrue interest in respect of the Series B
Subordinated Debentures received from the Series B Trust in the manner described
above under "-- Interest Income and Original Issue Discount. If, however, the
liquidation of the Series B Trust were to occur because the Series B Trust is
subject to United States federal income tax with respect to income accrued or
received on the Series B Subordinated Debentures, the distribution of the Series
B Subordinated Debentures to holders would be a taxable event to the Series B
Trust and to each holder and a holder would recognize gain or loss as if the
holder had exchanged its Series B Capital Securities for the Series B
Subordinated Debentures it received upon liquidation of the Series B Trust.
 
     Under certain circumstances described in this Prospectus (see "Description
of the Capital Securities -- Redemption -- Special Event Redemption or
Distribution of Series B Subordinated Debentures"), the Series B Subordinated
Debentures may be redeemed for cash by the Corporation, with the proceeds of
such redemption distributed to holders in redemption of their Series B Capital
Securities. Under current law, such a redemption would constitute a taxable
disposition of the redeemed Series B Capital Securities for United States
federal income tax purposes, and a holder would recognize gain or loss as if it
sold such redeemed Series B Capital Securities for cash. See "-- Sales of Series
B Capital Securities."
 
SALES OF SERIES B CAPITAL SECURITIES
 
     A holder that sells Series B Capital Securities will recognize gain or loss
equal to the difference between the amount realized by such holder on the sale
of the Series B Capital Securities (except to the extent that such amount
realized is characterized as a payment in respect of accrued but unpaid interest
on such holder's allocable share of the Series B Subordinated Debentures that
the holder had not included in gross income previously) and the holder's
adjusted tax basis in the Series B Capital Securities sold. Such gain or loss
generally will be a capital gain or loss and generally will be taxable as a
long-term capital gain or loss if the Series B Capital Securities have been held
for more than one year prior to their sale. If the Series B Capital Securities
have been held for more than 18 months prior to their sale, the holder may be
entitled to lower preferential long-term capital gain tax rates. Subject to
certain limited exceptions, capital losses cannot be applied to offset ordinary
income for United States federal income tax purposes.
 
                                      S-25
<PAGE>   26
 
TAX LAW CHANGES
 
     Prospective investors should be aware that Enron Corporation has filed a
petition in Tax Court challenging the proposed disallowance by the Internal
Revenue Service of the deduction of interest expense on securities issued by
Enron Corporation in 1993 and 1994 that are similar to, although different in a
number of respects form, the Series B Subordinated Debentures. It is possible
that a decision in that case could give rise to a Tax Event, which would permit
the Corporation to cause a redemption of the Capital Securities, as described
more fully under "Description of the Capital Securities -- Redemption" in the
accompanying Prospectus.
 
     Legislation was proposed by the United States Department of Treasury on
February 6, 1997, as part of President Clinton's 1998 Budget Proposal that
contained a provision which, if adopted as proposed, would have had the effect
of prohibiting the Corporation from deducting the interest paid on the Series B
Subordinated Debentures which, in turn, would have triggered a "Tax Event" (see
below). On August 5, 1997, the Taxpayer Relief Act of 1997 was signed by
President Clinton. The Act did not adopt the tax law changes that would have
denied the interest deduction as originally contained in the 1998 Budget
Proposal. In addition, President Clinton's recently-released Fiscal 1999 Budget
Proposal does not contain a provision similar to that contained in the 1998
Budget Proposal that would deny deductions for interest paid on the Series B
Subordinated Debentures.
 
     Even though the most recent Executive and Congressional action does not
attempt to incorporate the provisions from the 1998 Budget Proposal concerning
the disallowance of interest deductions on long-term debt obligations not
treated as indebtedness on the Corporation's balance sheet, there can be no
assurance that future legislative proposals or final legislation will not
adversely affect the ability of the Corporation to deduct interest on the Series
B Subordinated Debentures or otherwise affect the tax treatment of the
transactions described in this Prospectus. Such legislation could give rise to a
Tax Event, which would permit the Corporation to cause a redemption of the
Series B Capital Securities, as described more fully in this Prospectus under
the caption "Description of the Capital Securities -- Special Event Redemption
or Substitution of Series B Subordinated Debentures."
 
NON-UNITED STATES HOLDERS
 
     As used in this Prospectus, the term "Non-United States Holder" means any
holder that is not a United States Person (as defined above). As discussed
above, the Series B Capital Securities will be treated as evidence of an
indirect beneficial ownership interest in the Series B Subordinated Debentures.
See "-- Classification of the Series B Trust." Thus, under present United States
federal income tax law, and subject to the discussion below concerning backup
withholding:
 
          (a) no withholding of United States federal income tax will be
     required with respect to the payment by the Series B Trust or the
     Corporation or any paying agent of principal or interest (which for
     purposes of this discussion includes any OID) with respect to the Series B
     Capital Securities (or on the Series B Subordinated Debentures) to a
     Non-United States Holder, provided (1) that the beneficial owner of the
     Series B Capital Securities ("Beneficial Owner") does not actually or
     constructively own 10% or more of the total combined voting power of all
     classes of stock of the Corporation entitled to vote within the meaning of
     section 871(h)(3) of the Tax Code and the regulations under the Tax Code,
     (2) the Beneficial Owner is not a controlled foreign corporation for United
     States federal income tax purposes that is related to the Corporation
     through stock ownership, (3) the Beneficial Owner is not a bank whose
     receipt of interest with respect to the Series B Capital Securities (or on
     the Series B Subordinated Debentures) is described in section 881(c)(3)(A)
     of the Tax Code, and (4) the Beneficial Owner satisfies the statement
     requirement (described generally below) set forth in section 871(h) and
     section 881(c) of the Tax Code and the regulations under the Tax Code, and
 
          (b) no withholding of United States federal income tax will be
     required with respect to any gain realized by a Non-United States Holder
     upon the sale or other disposition of the Series B Capital Securities (or
     Series B Subordinated Debentures).
 
     To satisfy the requirement referred to in (a)(4) above, the Beneficial
Owner, or a financial institution holding the Series B Capital Securities on
behalf of such owner, must provide, in accordance with specified procedures, to
 
                                      S-26
<PAGE>   27
 
the Series B Trust or its paying agent, a statement to the effect that the
Beneficial Owner is not a United States Person. Pursuant to current temporary
Treasury regulations, these requirements will be met if (1) the Beneficial Owner
provides his name and address, and certifies, under penalties of perjury, that
it is not a United States Person (which certification may be made on an IRS Form
W-8 (or successor form)) or (2) a financial institution holding the Series B
Capital Securities (or Series B Subordinated Debentures) on behalf of the
Beneficial Owner certifies, under penalties of perjury, that such statement has
been received by it and furnishes a paying agent with a copy of such statement.
 
     If a Non-United States Holder cannot satisfy the requirements of the
"portfolio interest" exception described in (a) above, payments of interest
(including any OID) made to such Non-United States Holder will be subject to a
30% withholding tax unless the Beneficial Owner provides the Series B Trust or
the Corporation or any paying agent, as the case may be, with a properly
executed (1) IRS Form 1001 (or successor form) claiming an exemption from, or a
reduction of, such withholding tax under the benefit of a tax treaty or (2) IRS
Form 4224 (or successor form) stating that interest paid with respect to the
Series B Capital Securities (or on the Series B Subordinated Debentures) is not
subject to withholding tax because it is effectively connected with the
Beneficial Owner's conduct of a trade or business in the United States.
 
     If a Non-United States Holder is engaged in a trade or business in the
United States and interest with respect to the Series B Capital Securities (or
on the Series B Subordinated Debentures) is effectively connected with the
conduct of such trade or business, the Non-United States Holder, although exempt
from the withholding tax discussed above, will be subject to United States
federal income tax on such interest income on a net income basis in the same
manner as if it were a United States Person. In addition, if such Non-United
States Holder is a foreign corporation, it may be subject to a branch profits
tax equal to 30% of its effectively connected earnings and profits for the
taxable year, subject to adjustments. For this purpose, such interest income
would be included in such foreign corporation's earnings and profits.
 
     Any gain realized upon the sale or other disposition of the Series B
Capital Securities (or the Series B Subordinated Debentures) generally will not
be subject to United States federal income tax unless (a) such gain is
effectively connected with a trade or business in the United States of the
Non-United States Holder, (b) in the case of a Non-United States Holder who is
an individual, such individual is present in the United States for 183 days or
more in the taxable year of such sale, exchange, or retirement, and certain
other conditions are met, or (c) in the case of any gain representing accrued
interest on the Series B Subordinated Debentures, the requirements of the
"portfolio interest" exception described in (a) above are not satisfied.
 
     On October 14, 1997, the IRS published in the Federal Register final
regulations (the "1997 Final Regulations") which affect the United States
taxation of Non-United States Holders. The 1997 Final Regulations are effective
for payments made after December 31, 1999, regardless of the issue date of the
instrument with respect to which such payments are made, subject to certain
transition rules. The discussion under this heading and under "-- Information
Reporting and Backup Withholding" is not intended to be a complete discussion of
the provisions of the 1997 Final Regulations, and prospective holders of Series
B Capital Securities are urged to consult their tax advisors concerning the tax
consequences of their investment in light of the 1997 Final Regulations.
 
     The 1997 Final Regulations prescribe revised documentation procedures
designed to unify certification requirements and clarify reliance standards in
an effort to simplify the processing of United States-source payments to foreign
persons. The 1997 Final Regulations generally do not affect the documentation
rules described above, but add other certification options. Under one such
option, a withholding agent will be allowed to rely on an intermediary
withholding certificate furnished by a "qualified intermediary" (as defined
below) on behalf of one or more beneficial owners (or other intermediaries)
without having to obtain the beneficial owner certificate described above.
"Qualified intermediaries" include: (a) foreign financial institutions or
foreign clearing organizations (other than a United States branch or United
States office of such institution or organization), (b) foreign branches or
offices of United States financial institutions or foreign branches or offices
of United States clearing organizations, (c) a foreign corporation for purposes
of presenting claims of tax treaty benefits on behalf of its shareholders, or
(d) any other person acceptable to the service which, as to all (a), (b), (c),
and (d) have entered into withholding agreements with the IRS. In addition to
certain other requirements,
 
                                      S-27
<PAGE>   28
 
qualified intermediaries must obtain withholding certificates, such as revised
Internal Revenue Service Form W-8 (see below), from each beneficial owner. Under
other options, an authorized foreign agent of a United States withholding agent
will be permitted to act on behalf of the United States withholding agent and
the United States withholding agent will be permitted to rely on a statement
from a securities clearing organization, a bank, or other financial institution
that holds customers' securities in the ordinary course of its business if the
institution has received a Form W-8 (or an acceptable substitute) from the
beneficial owner.
 
     The 1997 Final Regulations generally define the beneficial owner of
payments on Series B Capital Securities as those persons who must include such
payments in gross income, rather than persons such as nominees or agents legally
entitled to such payments. In the case of payments to an entity classified as a
foreign partnership under United States tax principles, the partners, rather
than the partnership, generally will be required to provide the required
certifications to qualify for the withholding exemption described above. A
payment to a United States partnership, however, is treated for these purposes
as payment to a United States payee, even if the partnership has one or more
foreign partners. The 1997 Final Regulations provide certain presumptions with
respect to withholding for holders not furnishing the required certifications to
qualify for the withholding exemption described above. In addition, the 1997
Final Regulations will replace a number of current tax certification forms
(including Internal Revenue Service Form W-8) with a single, revised Internal
Revenue Service Form W-8 (which, in certain circumstances, requires information
in addition to that previously required). Under the 1997 Final Regulations, this
Form W-8 will generally remain valid until the last day of the third calendar
year following the year in which the certificate is signed.
 
     Under the 1997 Final Regulations, withholding of United States federal
income tax may apply to payments on a taxable sale or other disposition of
Series B Capital Securities by a Non-United States Holder who does not provide
appropriate certification to the withholding agent with respect to such
transaction.
 
     The 1997 Final Regulations provide transition rules concerning existing
certificates, such as Internal Revenue Service Forms W-8 and 1001.
 
     As discussed above, changes in legislation affecting the income tax
consequences of the Series B Subordinated Debentures are possible, and could
adversely affect the ability of the Corporation to deduct interest payable on
the Series B Subordinated Debentures. Such legislation also could cause the
Series B Subordinated Debentures to be classified as equity (rather than
indebtedness) of the Corporation for United States federal income tax purposes
and, thus, cause the income derived from the Series B Subordinated Debentures to
be characterized as dividend, rather than interest, income for such purposes.
Dividend income is not eligible for the "portfolio interest" exception described
in (a) above generally causing income derived by a Non-United States Holder on
the Series B Capital Securities to be subject to the 30% United States federal
withholding tax described above, unless a reduction or elimination of such tax
was available under an applicable tax treaty or such dividend income was
effectively connected with a trade or business carried on in the United States
by such Non-United States Holder. It is possible that legislation could be
enacted in the future that could affect the characterization of income paid on
the Series B Capital Securities (or the Series B Subordinated Debentures) or
otherwise adversely affect a Non-United States Holder. See "-- Tax Law Changes."
 
INFORMATION REPORTING AND BACKUP WITHHOLDING
 
     The amount of interest (or OID, if any) accrued on the Series B Capital
Securities (or the Series B Subordinated Debentures) held of record by United
States Persons (other than corporations and other exempt holders) will be
reported annually to such holders and to the IRS. The Property Trustee currently
intends to deliver such reports to holders of record prior to January 31
following each calendar year. It is anticipated that persons who hold Series B
Capital Securities as nominees for beneficial holders will report the required
tax information to beneficial holders on Form 1099.
 
     "Backup withholding" at a rate of 31% will apply to payments of interest
(or OID, if any) to non-exempt United States Persons unless the holder furnishes
its taxpayer identification number in the manner prescribed in applicable
Treasury regulations, certifies that such number is correct, certifies as to no
loss of exemption from backup withholding, and meets certain other conditions.
 
                                      S-28
<PAGE>   29
 
     No information reporting or backup withholding will be required with
respect to payments made by the Series B Trust or any paying agent to Non-United
States Holders if a statement described in (a)(4) under "Non-United States
Holders" has been received and the payor does not have actual knowledge that the
beneficial owner is a United States Person.
 
     In addition, backup withholding and information reporting will not apply if
payments of the principal, interest, OID, or premium with respect to the Series
B Capital Securities (or on the Series B Subordinated Debentures) are paid or
collected by a foreign office of a custodian, nominee, or other foreign agent on
behalf of the Beneficial Owner, or if a foreign office of a broker (as defined
in applicable Treasury regulations) pays the proceeds of the sale of the Series
B Capital Securities (or the Series B Subordinated Debentures) to the owner of
such Series B Capital Securities. If, however, such nominee, custodian, agent,
or broker is, for United States federal income tax purposes, a United States
Person, a controlled foreign corporation, or a foreign person that derives 50%
or more of its gross income for certain periods from the conduct of a trade or
business in the United States, such payments will not be subject to backup
withholding but will be subject to information reporting, unless (1) such
custodian, nominee, agent, or broker has documentary evidence in its records
that the Beneficial Owner is not a United States Person and certain other
conditions are met, or (2) the Beneficial Owner otherwise establishes an
exemption.
 
     In the case of a Non-United States Holder, under the 1997 Final
Regulations, backup withholding and information reporting will not apply to
payments of principal and interest (including OID) with respect to Series B
Capital Securities if such Non-United States Holder provides the required
certification to establish an exemption from the withholding of the United
States federal income tax or otherwise establishes an exemption, as set out in
the 1997 Final Regulations. In general, payments of principal and interest
(including OID) with respect to Series B Capital Securities made to a custodian,
nominee, or broker will not be subject to backup withholding or information
reporting, irrespective of the place of payment or the location of the office of
the custodian, nominee, or broker. Payments of interest (including OID) with
respect to Series B Capital Securities paid to a foreign intermediary (whether
or not a qualified intermediary) will, however, be subject to withholding of
United States federal income tax at the rate of 30% unless the beneficial owner
(whether or not a United States person) establishes an exemption by furnishing a
withholding certificate or other appropriate documentation. Unless the
beneficial owner establishes an exemption, a payment by a custodian, nominee, or
broker may be subject to information reporting and, unless (i) the payment has
been subject to withholding of United States federal income tax at the rate of
30% or (ii) the payment is made outside the United States to an offshore account
in a financial institution that maintains certain procedures related to account
documentation, to backup withholding as well.
 
     The 1997 Final Regulations provide for certain presumptions under which a
Non-United States Holder may be subject to backup withholding in the absence of
required certifications. For example, payments that a withholding agent cannot
reliably associate with documentation are presumed to be made to a United States
payee who is not an exempt recipient, in which case 31% backup withholding
applies, assuming the payment is reportable under Chapter 61 of the Code.
 
     Payment of the proceeds from disposition of Series B Capital Securities (or
the Series B Subordinated Debentures) to or through a United States office of a
broker is subject to information reporting and backup withholding unless the
holder or beneficial owner establishes an exemption from information reporting
and backup withholding.
 
     Under the 1997 Final Regulations, payments on the sale, exchange,
redemption, or retirement of Series B Capital Securities to or through a broker
may be subject to information reporting and backup withholding unless (a) the
beneficial owner establishes an exemption or (b) the transaction is effected
outside the United States and the broker is not a United States Person, a
controlled foreign corporation for United States tax purposes, a United States
branch of a foreign bank or foreign insurance company, a foreign partnership
(with respect to payments made after December 31, 1999) if at any time during
its tax year, it is controlled by United States persons or engaged in a United
States trade or business, or a foreign person 50% or more of whose gross income
is effectively connected with the conduct of a United States trade or business
for a specified three-year period.
 
                                      S-29
<PAGE>   30
 
     Back-up withholding is not an additional tax. Rather, any amounts withheld
from a holder of the Series B Capital Securities under the backup withholding
rules will be allowed as a refund or a credit against such holder's United
States federal income tax liability, provided the required information is
furnished to the IRS.
 
     THE FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS INCLUDED FOR GENERAL
INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A HOLDER'S PARTICULAR
SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH RESPECT TO THE TAX
CONSEQUENCES TO THEM OF THE PURCHASE, OWNERSHIP, AND DISPOSITION OF THE SERIES B
CAPITAL SECURITIES, INCLUDING THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN,
AND OTHER TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN FEDERAL OR OTHER TAX
LAWS.
 
                          BENEFIT PLAN CONSIDERATIONS
 
     Before authorizing an investment in the Series B Capital Securities, each
fiduciary of a pension, profit sharing, or other employee benefit plan subject
to ERISA (each, a "Plan"), should consider, among other matters, (a) ERISA's
fiduciary standards (including its prudence and diversification requirements),
(b) whether such fiduciary has authority to make an investment in the Series B
Capital Securities under the applicable Plan investment policies and governing
instruments, and (c) rules under ERISA and the Tax Code that prohibit a Plan
fiduciary from causing a Plan to engage in a "prohibited transaction."
 
     Section 406 of ERISA and Section 4975 of the Tax Code prohibit Plans, as
well as individual retirement accounts and Keogh plans subject to Section 4975
of the Tax Code (also "Plans"), from, among other things, engaging in certain
transactions involving "plan assets" with persons who are "parties in interest'
under ERISA or "disqualified persons" under the Tax Code with respect to such
Plan. A violation of these "prohibited transaction" rules may result in an
excise tax or other liabilities under ERISA and/or Section 4975 of the Tax Code
for such persons, unless exemptive relief is available under an applicable
statutory or administrative exemption. Employee benefit plans that are
governmental plans (as defined in Section 3(32) of ERISA), certain church plans
(as defined in Section 3(33) of ERISA), and foreign plans (as described in
Section 4(b)(4) of ERISA) are not subject to the requirements of ERISA or
Section 4975 of the Tax Code.
 
     The Department of Labor ("DOL") has issued a regulation (29 C.F.R. ss.
2510.3-101) (the "Plan Assets Regulation") concerning the definition of what
constitutes the assets of a Plan. The Plan Assets Regulation provides that, as a
general rule, the underlying assets and properties of corporations,
partnerships, trusts, and certain other entities in which a plan makes an
"equity" investment will be deemed for purposes of ERISA to be assets of the
investing plan unless certain exceptions apply.
 
     Pursuant to an exception contained in the Plan Assets Regulation, the
assets of the Series B Trust would not be deemed to be "plan assets" of
investing Plans if, immediately after the most recent acquisition of any equity
interest in the Trust, less than 25% of the value of each class of equity
interest in the Series B Trust were held by Plans, other employee benefit plans
not subject to ERISA or Section 4975 of the Tax Code (such as governmental,
church, and foreign plans), and entities holding assets deemed to be "plan
assets" of any Plan (collectively, "Benefit Plan Investors"). No assurance can
be given that the value of the Series B Capital Securities held by Benefit Plan
Investors will be less than 25% of the total value of such Series B Capital
Securities and no monitoring or other measures will be taken with respect to the
satisfaction of the conditions to this exception. All of the Series B Common
Securities will be purchased and held directly by the Corporation.
 
     Under another exception contained in the Plan Asset Regulation, if the
Series B Capital Securities were to qualify as "publicly offered securities,"
the assets of the Series B Trust would not be deemed to be "plan assets" by
reason of a Plan's acquisition or holding of such securities. The Series B
Capital Securities would qualify as "publicly offered securities" if, among
other requirements, they are offered pursuant to an effective registration
statement, are owned by 100 or more investors independent of the Trust and each
other, and are subsequently registered under the Exchange Act. It is expected
that the 100 investor requirement will not be satisfied and that the Series B
Capital Securities will not be registered under the Exchange Act.
 
                                      S-30
<PAGE>   31
 
     There can be no assurance that any of the exceptions set forth in the Plan
Assets Regulation will apply to the purchase of Series B Capital Securities and,
as a result, an investing Plan's assets could be considered to include an
undivided interest in the Series B Subordinated Debentures held by the Series B
Trust. In the event that assets of the Series B Trust are considered assets of
an investing Plan, the Declaration Trustees, the Corporation, and other persons,
in providing services with respect to the Series B Subordinated Debentures, may
be considered fiduciaries to such Plan and subject to the fiduciary
responsibility provisions of Title I of ERISA. In addition, certain transactions
involving the Series B Trust and/or the Series B Capital Securities could be
deemed to constitute direct or indirect prohibited transactions under ERISA and
Section 4975 of the Tax Code with respect to a Plan. For example, if the
Corporation or any Trustee is a party in interest or a fiduciary with respect to
an investing Plan (either directly or by reason of its ownership of its
subsidiaries), extensions of credit between the Corporation and the Series B
Trust (as represented by the Series B Subordinated Debentures and the Guarantee)
would likely be prohibited by Section 406(a)(1)(B) of ERISA and Section
4975(c)(1)(B) of the Tax Code.
 
     The DOL has issued five Prohibited Transaction Class Exemptions ("PTCEs")
that may provide exemptive relief for direct or indirect prohibited transactions
resulting from the purchase or holding of the Series B Capital Securities,
assuming that assets of the Series B Trust were deemed to be "plan assets" of
Plans investing in the Series B Trust (see above). Those class exemptions are
PTCE 96-23 (for certain transactions determined by in-house asset managers),
PTCE 91-38 (for certain transactions involving bank collective investment
funds), PTCE 95-60 (for certain transactions involving insurance company general
accounts), PTCE 90-1 (for certain transactions involving insurance company
pooled separate accounts), and PTCE 84-14 (for certain transactions determined
by independent qualified professional asset managers).
 
     Because of ERISA's prohibitions and those of Section 4975 of the Tax Code,
the Series B Capital Securities may not be purchased or held by any Plan, any
entity whose underlying assets include "plan assets" by reason of any Plan's
investment in the entity (a "Plan Asset Entity"), or any person having "plan
assets" of any Plan, unless such purchase or holding is covered by the exemptive
relief provided by PTCE 96-23, 95-60, 91-38, 90-1, or 84-14 or another
applicable exemption. If a purchaser or holder of the Series B Capital
Securities that is a Plan or a Plan Asset Entity elects to rely on an exemption
other than PTCE 96-23, 95-60, 91-38, 90-1 or 84-14, the Corporation and the
Series B Trust may require a satisfactory opinion of counsel or other evidence
with respect to the availability of such exemption for such purchase and
holding. Any purchaser or holder of the Series B Capital Securities or any
interest in such Series B Capital Securities will be deemed to have represented
by its purchase and holding of such Series B Capital Securities that either (a)
the purchaser and holder is not a Plan or a Plan Asset Entity and is not
purchasing such securities on behalf of or with "plan assets" of any Plan, or
(b) the purchase and holding of the Series B Capital Securities is covered by
the exemptive relief provided by PTCE 96-23, 95-60, 91-38, 90-1, or 84-14 or
another applicable exemption and the Corporation or Trustees are not
"fiduciaries" within the meaning of Section 3(21) of ERISA or the regulations
under ERISA.
 
     Due to the complexity of these rules and the penalties that may be imposed
upon persons involved in non-exempt prohibited transactions, it is particularly
important that fiduciaries or other persons investing in the Series B Capital
Securities on behalf of or with "plan assets" of any Plan consult with their own
counsel regarding the potential consequences if the assets of the Series B Trust
were deemed to be "plan assets" and the availability of exemptive relief under
PTCE 96-23, 95-60, 91-38, 90-1, or 84-14 or another applicable exemption.
 
     Governmental Plans, as defined in Section 3(32) of ERISA, are not subject
to ERISA, and also are not subject to the prohibited transaction provisions of
Section 4975 of the Tax Code. However, state laws or regulations governing the
investment and management of the assets of such plans may contain fiduciary and
prohibited transaction provisions similar to those under ERISA and the Tax Code
discussed above. Accordingly, fiduciaries of government plans, in consultation
with their advisers, should consider the impact of their respective state laws
on investments in the Series B Capital Securities, and the considerations
discussed above, to the extent applicable.
 
                                      S-31
<PAGE>   32
 
                                  UNDERWRITING
 
     Under the terms and subject to the conditions contained in an Underwriting
Agreement, dated the date of this Prospectus Supplement (the "Underwriting
Agreement"), the Underwriters named below have severally agreed to purchase, and
the Series B Trust has agreed to sell to them, severally but not jointly, the
Liquidation Amount of the Series B Capital Securities set forth opposite their
names below:
 
<TABLE>
<CAPTION>
                                             LIQUIDATION AMOUNT
                                              OF THE SERIES B
                   NAME                      CAPITAL SECURITIES
                   ----                      ------------------
<S>                                          <C>
Morgan Stanley & Co. Incorporated..........     $ 50,000,000
Credit Suisse First Boston Corporation.....       50,000,000
                                                ------------
          Total............................     $100,000,000
                                                ============
</TABLE>
 
     Under the terms and conditions of the Underwriting Agreement, in the event
of a default by an Underwriter, in certain circumstances, the purchase
commitments of non-defaulting Underwriters may be increased or the Underwriting
Agreement may be terminated.
 
     The initial purchase price for the Series B Capital Securities will be the
initial offering price set forth on the cover page of this Prospectus Supplement
(the "Series B Capital Securities Offering Price"). The Underwriters propose to
offer the Series B Capital Securities to certain dealers at the Series B Capital
Securities Offering Price less a concession not in excess of $6.00 per Series B
Capital Security. The Underwriters may allow, and such dealers may reallow, a
concession not in excess of $2.50 per Series B Capital Security to certain other
dealers. After the Series B Capital Securities are released for sale, the Series
B Capital Securities Offering Price and other selling terms may from time to
time be varied by the Underwriters.
 
     In order to facilitate the offering of the Series B Capital Securities, the
Underwriters may engage in transactions that stabilize, maintain, or otherwise
affect the price of the Series B Capital Securities. Specifically, the
Underwriters may overallot in connection with the Series B Capital Securities
Offering, creating a short position in the Series B Capital Securities for their
own account. In addition, to cover overallotments or to stabilize the price of
the Series B Capital Securities, the Underwriters may bid for, and purchase, the
Series B Capital Securities in the open market. Finally, the underwriting
syndicate may reclaim selling concessions allowed to an underwriter or a dealer
for distributing the Series B Capital Securities in the Series B Capital
Securities Offering, if the syndicate repurchases previously distributed Series
B Capital Securities in transactions to cover syndicate short positions, in
stabilization transactions, or otherwise. Any of these activities may stabilize
or maintain the market price of the Series B Capital Securities above
independent market levels. The Underwriters are not required to engage in these
activities, and may end any of these activities at any time.
 
     In view of the fact that the proceeds from the sale of the Series B Capital
Securities will be used to purchase the Series B Subordinated Debentures issued
by the Corporation, the Underwriting Agreement provides that the Corporation
will pay as compensation for the Underwriters arranging the investment therein
of such proceeds an amount of $10.00 per Series B Capital Security (or
$1,000,000 in the aggregate) for the accounts of the Underwriters.
 
     Because the National Association of Securities Dealers, Inc. ("NASD") is
expected to view the Series B Capital Securities as interests in a direct
participation program, the offering of the Series B Capital Securities is being
made in compliance with the applicable provisions of Rule 2810 of the NASD's
Conduct Rules. Offers and sales of Series B Capital Securities will be made only
to institutional investors for whom an investment in non-convertible investment
grade preferred securities is appropriate. The Underwriters may not confirm
sales to any accounts over which they exercise discretionary authority without
the prior written approval of the transaction by the customer.
 
     The Corporation and the Series B Trust have agreed that, during the period
beginning on the date of the Underwriting Agreement and continuing to and
including the closing date, they will not offer, sell, contract to sell, or
otherwise dispose of any securities of the Corporation or the Series B Trust
substantially similar to the
 
                                      S-32
<PAGE>   33
 
Series B Capital Securities, or any securities convertible into or exchangeable
for the Series B Capital Securities, without the prior written consent of the
Underwriters.
 
     The Series B Capital Securities are a new issue of securities with no
established trading market. The Corporation and the Series B Trust do not intend
to apply for listing of the Series B Capital Securities on any national
securities exchange, but the Corporation and the Series B Trust have been
advised by the Underwriters that they presently intend to make a market in the
Series B Capital Securities. However, the Underwriters are not obligated to do
so and such market making may be discontinued at any time without notice at the
sole discretion of the Underwriters. Accordingly, no assurance can be given as
to the development of liquidity of any market for the Series B Capital
Securities.
 
     The Corporation and the Series B Trust have agreed to indemnify the
Underwriters and certain other persons against, or contribute to payments that
the Underwriters may be required to make in respect of, certain liabilities,
including liabilities under the Securities Act.
 
     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 the Corporation and its affiliates, for which such Underwriters or
their affiliates have received or will receive customary fees and commissions.
 
                             VALIDITY OF SECURITIES
 
     Certain matters of Delaware law relating to the validity of the Series B
Capital Securities, the enforceability of the Series B Declaration, and the
formation of the Series B Trust will be passed upon on behalf of the Corporation
and the Series B Trust by Richards, Layton & Finger P.A., special Delaware
counsel to the Corporation and the Series B Trust. The validity of the Series B
Subordinated Debentures and the Series B Guarantee will be passed upon for the
Corporation and the Series B Trust by Porter, Wright, Morris & Arthur and for
the Underwriters by Sullivan & Cromwell. Porter, Wright, Morris & Arthur will
rely as to certain matters of Delaware law on the opinion of Richards, Layton &
Finger, P.A. Sullivan & Cromwell will rely as to certain matters of Maryland law
on the opinion of Porter, Wright, Morris & Arthur. Sullivan & Cromwell from time
to time performs legal services for the Corporation. As of March 31, 1998,
members of Porter, Wright, Morris & Arthur participating in the representation
of the Corporation and the Series B Trust on this matter beneficially owned an
aggregate of approximately 26,000 shares of the Corporation's Common Stock.
 
                                      S-33
<PAGE>   34
 
                      (This Page Intentionally Left Blank)
<PAGE>   35
 
PROSPECTUS
 
                                  $250,000,000                              LOGO
                       HUNTINGTON BANCSHARES INCORPORATED
 
                         JUNIOR SUBORDINATED DEBENTURES
 
                             HUNTINGTON CAPITAL II
                             HUNTINGTON CAPITAL III
                             HUNTINGTON CAPITAL IV
                              HUNTINGTON CAPITAL V
                             HUNTINGTON CAPITAL VI
                               CAPITAL SECURITIES
 
     FULLY AND UNCONDITIONALLY GUARANTEED TO THE EXTENT DESCRIBED BELOW BY
                       HUNTINGTON BANCSHARES INCORPORATED
 
     Huntington Bancshares Incorporated, a Maryland corporation (the
"Corporation"), may from time to time offer in one or more series or issuances
its junior subordinated debentures (the "Subordinated Debentures"). The
Subordinated Debentures will be unsecured and subordinate and junior in right of
payment to all Senior Indebtedness (as defined in "Description of the
Subordinated Debentures -- Subordination") of the Corporation. If provided in an
accompanying Prospectus Supplement, the Corporation will have the right to defer
payments of interest on any series of Subordinated Debentures by extending the
interest payment period at any time or from time to time for up to such number
of consecutive interest payment periods (which shall not extend beyond the
Stated Maturity (as defined in this Prospectus) of the Subordinated Debentures)
with respect to each deferral period as may be specified in such Prospectus
Supplement (each, an "Extension Period"). In such circumstances, however, the
Corporation would not be permitted, subject to certain exceptions described in
this Prospectus, to declare or pay any dividends, distributions, or other
payments with respect to, or repay, repurchase, redeem, or otherwise acquire,
the Corporation's capital stock or debt securities that rank pari passu in all
respects with, or junior to, such series of Subordinated Debentures. See
"DESCRIPTION OF THE SUBORDINATED DEBENTURES -- OPTION TO DEFER INTEREST
PAYMENTS" AND "-- CERTAIN COVENANTS OF THE CORPORATION."
 
     Huntington Capital II, Huntington Capital III, Huntington Capital IV,
Huntington Capital V, and Huntington Capital VI, each a statutory business trust
created under the laws of the State of Delaware (each, a "Trust," and
collectively, the "Trusts"), may severally offer, from time to time, capital
securities (the "Capital Securities") representing preferred beneficial
interests in such Trust. The Corporation will be the owner of the common
securities representing common ownership interests in such Trust (the "Common
Securities" and, together with the Capital Securities, the "Trust Securities").
Holders of the Capital Securities will be entitled to receive preferential
cumulative cash distributions ("Distributions") accumulating from the date of
original issuance and payable periodically as provided in an accompanying
Prospectus Supplement.
                                                        (CONTINUED ON NEXT 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 COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
 
                      ------------------------------------
 
  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.
 
                      ------------------------------------
 
                                  June 5, 1998
<PAGE>   36
 
(cover page continued)
 
     Concurrently with the issuance by a Trust of its Capital Securities, such
Trust will invest the proceeds received in respect of the Capital Securities and
Common Securities in a corresponding series of the Corporation's Subordinated
Debentures (the "Corresponding Subordinated Debentures") with interest,
repayment, and other terms corresponding to the terms of that Trust's Capital
Securities (the "Related Capital Securities"). The Corresponding Subordinated
Debentures will be the sole assets of each Trust, and payments under the
Corresponding Subordinated Debentures will be the only revenue of each Trust. If
provided in an accompanying Prospectus Supplement, the Corporation may, upon
receipt of approval of the Board of Governors of the Federal Reserve System (the
"Federal Reserve"), if such approval is then required, redeem the Corresponding
Subordinated Debentures (and cause the redemption of the related Trust
Securities) or may dissolve each Trust and cause after satisfaction of the
claims of creditors of the Trust as provided by applicable law the Corresponding
Subordinated Debentures to be distributed to the holders of the Related Capital
Securities in liquidation of their interests in such Trust. See "Description of
the Capital Securities -- Liquidation Distribution Upon Dissolution."
 
     If provided in an accompanying Prospectus Supplement, the Corporation will
have the right to defer payments of interest on any series of Corresponding
Subordinated Debentures. If interest payments are so deferred, Distributions on
the Related Capital Securities also will be deferred and the Corporation will
not be permitted, subject to certain exceptions described in this Prospectus, to
declare or pay any dividends, distributions, or other payments with respect to,
or repay, repurchase, redeem, or otherwise acquire, the Corporation's capital
stock or debt securities that rank pari passu with, or junior to, the
Corresponding Subordinated Debentures. During an Extension Period, Distributions
will continue to accumulate (and the Capital Securities will accumulate
additional Distributions at the rate per annum set forth in the accompanying
Prospectus Supplement). See "Description of the Capital
Securities -- Distributions."
 
     Taken together, the Corporation's obligations under each series of
Corresponding Subordinated Debentures, the Indenture, the related Declaration,
and the related Guarantee (each, as defined in this Prospectus), in the
aggregate, provide a full, irrevocable, and unconditional guarantee of payments
of distributions and other amounts due on the Related Capital Securities. See
"Relationship Among the Capital Securities, the Corresponding Subordinated
Debentures, and the Guarantees -- Full and Unconditional Guarantee." The payment
of Distributions with respect to the Capital Securities of each Trust and
payments on liquidation or redemption with respect to such Capital Securities,
in each case out of funds held by such Trust, are each irrevocably guaranteed by
the Corporation to the extent described in this Prospectus (each, a
"Guarantee"). See "Description of the Guarantees." The obligations of the
Corporation under each Guarantee will be subordinate and junior in right of
payment to all Senior Indebtedness of the Corporation.
 
     The 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
Subordinated Debentures (other than Corresponding Subordinated Debentures) and
Capital Securities (including the Corresponding Subordinated Debentures) issued
pursuant to the Registration Statement of which this Prospectus forms a part
shall not exceed $250,000,000. Certain specific terms of the 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 in this
Prospectus, (a) in the case of Subordinated Debentures, the specific
designation, aggregate principal amount, denominations, Stated Maturity
(including any provisions for the shortening or extension of such Stated
Maturity), 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
Trust, specific title, aggregate amount, stated liquidation amount, number of
securities, Distribution rate or method of calculating such rate, Distribution
payment dates, applicable 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.
                                        2
<PAGE>   37
 
     The Prospectus Supplement also will contain information, as applicable,
about certain United States federal income tax consequences relating to the
Subordinated Debentures or Capital Securities.
 
     The 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 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 Subordinated Debentures or Capital Securities will be listed
on any national securities exchange or automated quotation system. If the
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 Subordinated Debentures or Capital
Securities.
 
     This Prospectus may not be used to consummate sales of Subordinated
Debentures or Capital Securities unless accompanied by a Prospectus Supplement.
 
                                        3
<PAGE>   38
 
                             AVAILABLE INFORMATION
 
     The Corporation is subject to the reporting requirements of Sections 13 and
15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act").
Any reports and other information filed by the Corporation with the Securities
and Exchange Commission (the "Commission") may be inspected and copied at the
public reference facilities maintained by the Commission at Judiciary Plaza, 450
Fifth Street, N.W., Washington, D.C. 20549, and at the Commission's regional
offices in Chicago, 500 West Madison Street, Suite 1400, Chicago, Illinois
60661, and in New York, 7 World Trade Center, 13th Floor, New York, New York
10048. Copies of such material also may be obtained by mail from the Public
Reference Section of the Commission at Judiciary Plaza, 450 Fifth Street, N.W.,
Washington, D.C. 20549, at prescribed rates. Such material also may be accessed
electronically by means of the Commission's home page on the Internet
(http://www.sec.gov). Copies of such reports, proxy statements, and other
information filed by the Corporation can be inspected and copied at the offices
of the Nasdaq National Market at 1735 K Street, N.W., Washington, D.C. 20006.
 
     The Corporation and the Trusts have filed with the Commission a
Registration Statement on Form S-3 (together with all amendments and exhibits to
such Registration Statement, the "Registration Statement") under the Securities
Act of 1933, as amended (the "Securities Act") with respect to the securities
offered by this Prospectus. This Prospectus does not contain all of 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 the Corporation and the securities
offered by this Prospectus, reference is made to the Registration Statement and
the exhibits and financial statements, notes, and schedules filed as part of
such Registration Statement or incorporated by reference in such Registration
Statement. These documents may be inspected at the public reference facilities
of the Commission, at the addresses set forth above. Statements made in this
Prospectus concerning the contents of any documents referred to in this
Prospectus 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,
or incorporated by reference in, the Registration Statement.
 
     No separate financial statements of any Trust have been included in this
Prospectus and no separate financial statements will be prepared in the future.
The Corporation and the Trusts do not consider that such financial statements
would be material to holders of the Capital Securities because (a) all of the
voting securities of each Trust will be owned, directly or indirectly, by the
Corporation, (b) each Trust has no independent operations and exists for the
sole purpose of issuing securities representing undivided beneficial interests
in the assets of that Trust and investing the proceeds from the sale of such
securities in the Subordinated Debentures issued by the Corporation, and (c) the
obligations of each Trust under its Capital Securities are fully and
unconditionally guaranteed by the Corporation to the extent such Trust has funds
available to meet such obligations. In addition, the Corporation does not expect
that any of the Trusts will be filing reports under the Exchange Act with the
Commission.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The following documents previously filed with the Commission by the
Corporation pursuant to Section 13(a), 14, or 15(d) of the Exchange Act are
incorporated in this Prospectus by reference:
 
        1. Annual Report on Form 10-K for the fiscal year ended December 31,
           1997;
 
        2. Quarterly Report on Form 10-Q for the quarter ended March 31, 1998;
           and
 
        3. Current Reports on Form 8-K, dated January 14, March 11, and April
           14, 1998, to report annual and/or quarterly earnings and/or certain
           developments.
 
     All other documents filed by the Corporation pursuant to Sections 13(a),
13(c), 14, or 15(d) of the Exchange Act after the date of this Prospectus and
prior to the termination of the offering of securities made by this Prospectus
(the "Offering") will be deemed to be incorporated by reference in this
Prospectus from the date such other documents are filed. Any statement made or
incorporated by reference in this document will be deemed to be modified or
superseded for purposes of this Prospectus to the extent that a statement
contained in this Prospectus or in any other subsequently filed document which
also is or is deemed to be incorporated by
 
                                        4
<PAGE>   39
 
reference in this Prospectus modifies or supersedes such statement. Any
statement so modified or superseded will not be deemed, except as so modified or
superseded, to constitute a part of this Prospectus.
 
     THIS PROSPECTUS INCORPORATES OTHER DOCUMENTS BY REFERENCE WHICH ARE NOT
PRESENTED IN OR DELIVERED WITH THIS PROSPECTUS. COPIES OF THESE OTHER DOCUMENTS
ARE AVAILABLE WITHOUT CHARGE UPON WRITTEN OR ORAL REQUEST ADDRESSED TO CHERI
GRAY, INVESTOR RELATIONS ANALYST, HUNTINGTON BANCSHARES INCORPORATED, HUNTINGTON
CENTER, 41 SOUTH HIGH STREET, COLUMBUS, OHIO 43287, TELEPHONE (614) 480-3803.
 
                                   THE TRUSTS
 
     Each Trust is a statutory business trust created under the Delaware
Business Trust Act, as amended, pursuant to a declaration of trust executed by
the Corporation, as Sponsor, a Regular Trustee (as defined below), and the
Delaware Trustee (defined below) and the filing of a certificate of trust with
the Secretary of State of the State of Delaware. Each declaration of trust will
be amended and restated in its entirety (each, as so amended and restated, a
"Declaration") substantially in the form filed as an exhibit to the Registration
Statement of which this Prospectus forms a part. Each Declaration will be
qualified as an indenture under the Trust Indenture Act of 1939, as amended (the
"Trust Indenture Act").
 
     Each Trust will use all the proceeds derived from the issuance of the
Capital Securities and the Common Securities to purchase the Corresponding
Subordinated Debentures and, accordingly, the assets of each Trust will consist
solely of the Corresponding Subordinated Debentures. Each Trust exists for the
exclusive purpose of (a) issuing and selling the Trust Securities representing
undivided beneficial ownership interests in the assets of the Trust, (b)
investing the gross proceeds from the sale of the Trust Securities to acquire
the Corresponding Subordinated Debentures, and (c) engaging in only those other
activities necessary or incidental thereto. No Trust may borrow money or issue
debt or mortgage or pledge any of its assets.
 
     All of the Common Securities of each Trust will be owned by the
Corporation. The Common Securities of a Trust will rank pari passu, and payments
on such Common Securities will be made pro rata, with the Capital Securities of
such Trust, except upon the occurrence and continuance of an Indenture Event of
Default. In that event, the rights of the Corporation, as holder of the Common
Securities, to payment in respect of Distributions and upon liquidation or
redemption will be subordinated to the rights of the holders of the Capital
Securities of such Trust. See "Description of Capital Securities
 -- Subordination of Common Securities." The Corporation will acquire Common
Securities of each Trust in an aggregate liquidation amount equal to not less
than 3% of the total capital of the Trust.
 
     Each Trust's business and affairs will be conducted by its trustees
("Declaration Trustees"), which are appointed by the Corporation as holder of
the Trust's Common Securities. Each Trust's Declaration Trustees will consist of
three individual trustees, who are employees or officers of or who are
affiliated with the Corporation (the "Regular Trustees"); The Chase Manhattan
Bank, as Property Trustee (the "Property Trustee"); and Chase Manhattan Bank
Delaware, which maintains its principal place of business in the State of
Delaware, as Delaware Trustee (the "Delaware Trustee"). The Chase Manhattan Bank
also acts as the sole indenture trustee under the Indentures and Guarantees. See
"Description of the Subordinated Debentures" and "Description of the
Guarantees." The Corporation, as the holder of all the Common Securities, has
the right to appoint, remove, or replace any of the Declaration Trustees and to
increase or decrease the number of Declaration Trustees, provided there always
must be a Delaware Trustee, a Property Trustee, and a Regular Trustee. Unless
otherwise specified in the applicable Prospectus Supplement, each Trust has a
term of approximately 55 years, but may dissolve earlier as provided in the
applicable Declaration.
 
     Under the Indenture, the Corporation, as borrower, has agreed to pay all
fees and expenses related to the organization and operation of each Trust
(including any taxes, duties, assessments, or governmental charges of whatever
nature (other than withholding taxes) imposed by the United States or any other
domestic taxing authority upon the Trust) and be responsible for all debts and
obligations of each Trust (other than with respect to
 
                                        5
<PAGE>   40
 
the Capital Securities). See "Description of the Capital Securities -- Expenses
and Taxes" and "Description of the Subordinated Debentures -- Certain Covenants
of the Corporation."
 
     For so long as the Capital Securities of a Trust remain outstanding, the
Corporation has agreed to:
 
        - maintain directly or indirectly 100% ownership of the Common
          Securities of that Trust,
 
        - cause the Trust to remain a statutory business trust and not to
          voluntarily dissolve, wind-up, liquidate, or terminate the Trust,
          except as permitted by the Declaration,
 
        - use its reasonable best efforts to ensure that the Trust will not be
          an "investment company" for purposes of the Investment Company Act of
          1940, as amended, and
 
        - take no action that would be reasonably likely to cause the Trust to
          be classified as an association or a publicly traded partnership
          taxable as a corporation for United States federal income tax
          purposes.
 
     The Declarations and the Guarantees incorporate by reference the terms of
the Trust Indenture Act. The rights of the holders of the Capital Securities,
including economic rights, rights to information, and voting rights, are set
forth in the applicable Declarations and the Trust Indenture Act. See
"Description of the Capital Securities."
 
     The location of the principal executive office of each Trust is c/o
Huntington Bancshares Incorporated, Huntington Center, 41 South High Street,
Columbus, Ohio 43287, and its telephone number is 614-480-8300.
 
                                        6
<PAGE>   41
 
                                THE CORPORATION
 
GENERAL
 
     The Corporation was incorporated in Maryland in 1966 and is a multi-state
bank holding company headquartered in Columbus, Ohio. Its subsidiaries conduct a
full-service commercial and consumer banking business, engage in mortgage
banking, lease financing, trust services, discount brokerage services,
underwriting credit life and disability insurance, and issuing commercial paper
guaranteed by the Corporation, and provide other financial products and
services.
 
     As of March 31, 1998, the Corporation had assets of $26.8 billion, net
loans of $17.5 billion, deposits of $17.7 billion, and shareholders' equity of
$2.1 billion. At March 31, 1998, the Corporation's subsidiaries had a total of
459 banking offices in the following locations: 192 banking offices in Ohio, 135
banking offices in Michigan, 51 banking offices in Florida, 44 banking offices
in West Virginia, 24 banking offices in Indiana, 13 banking offices in Kentucky,
and one foreign office in each of the Cayman Islands and Hong Kong. The
Huntington Mortgage Company, a wholly-owned subsidiary, has loan origination
offices throughout the Midwest and East Coast. In addition to these offices, the
Corporation offers its products and services through its 24-hour telephone bank,
a network of more than 1,250 ATMs, and its Web Bank at www.huntington.com.
Information contained in the Corporation's web site shall not be deemed to be
part of this Prospectus.
 
     Effective as of June 30, 1997, the Corporation took advantage of
newly-effective interstate banking legislation to consolidate substantially all
of its individual subsidiary bank charters into one lead bank, The Huntington
National Bank.
 
     The principal executive offices of the Corporation are located at
Huntington Center, 41 South High Street, Columbus, Ohio 43287, and its telephone
number is 614-480-8300.
 
RECENT AND PENDING ACQUISITIONS
 
     The Corporation completed its acquisition of First Michigan Bank
Corporation ("First Michigan"), a $3.6 billion bank holding company
headquartered in Holland, Michigan, on September 30, 1997, in a transaction
accounted for as a pooling of interests. All financial information reported by
the Corporation, including the financial information incorporated by reference,
except dividends per share, has been restated for the First Michigan
acquisition.
 
     On February 28, 1997, the Corporation acquired Citi-Bancshares, Inc.
("Citi-Bancshares"), a $548 million one-bank holding company headquartered in
Leesburg, Florida. On October 31, 1997, the Corporation acquired The Bank of
Winter Park ("Winter Park"), a $90 million bank headquartered in Winter Park,
Florida. These transactions were accounted for as purchases; accordingly, the
results of Citi-Bancshares and Winter Park have been included in the
Corporation's consolidated financial statements from the date of acquisition of
these banking institutions.
 
     In December 1997, the Corporation announced the acquisition of 60 banking
offices in Florida to be sold by NationsBank Corporation (the "Branch
Acquisition") in connection with the merger of Barnett Banks Inc. into
NationsBank Corporation. The Branch Acquisition is expected to add $1.6 billion
in loans and $2.6 billion in deposits to the Corporation's balance sheet. The
deposit premium, which is subject to final determination based on the deposit
levels at the closing of the Branch Acquisition, is expected to be approximately
$523 million. The Branch Acquisition has received the approval of the Office of
the Comptroller of the Currency and is expected to close in June 1998.
 
     As of the date of this Prospectus, there are no other material acquisitions
pending; however, the Corporation continues to explore opportunities to acquire
banking and non-banking companies, both interstate and intrastate. Such future
acquisitions could involve cash, debt, equity securities, or a combination of
these forms of consideration.
 
                                        7
<PAGE>   42
 
OTHER INFORMATION
 
     Other than as described in this Prospectus, there have been no material
changes in the affairs of the Corporation since the filing of its Annual Report
on Form 10-K for the year ended December 31, 1997, that have not been described
in a subsequent report filed with the SEC pursuant to the Exchange Act. See
"Incorporation of Certain Documents By Reference."
 
                                USE OF PROCEEDS
 
     All of the net proceeds from any sale of Capital Securities will be
invested by each Trust in the Subordinated Debentures. Except as otherwise set
forth in the applicable Prospectus Supplement, the Corporation intends to use
all of the net proceeds from the sale of Subordinated Debentures for general
corporate purposes, which may include the repayment of existing indebtedness,
investments in, or extensions of credit to, its subsidiaries, the financing of
possible acquisitions, and for general working capital. Pending such use, the
net proceeds may be temporarily invested.
 
     The proceeds from the sale of Subordinated Debentures or Capital Securities
will qualify as Tier 1, or core, capital with respect to the Corporation under
the current risk-based capital guidelines established by the Federal Reserve.
Although the Corporation does not intend to use the proceeds of the Offering for
any pending acquisition, the addition of the proceeds to the Corporation's Tier
1 capital will assist the Corporation in maintaining the quality of its capital
ratios in light of its recent acquisition activity. The Corporation continues to
explore opportunities to acquire banking and non-banking companies. The precise
amounts and timing of the application of proceeds will depend upon the funding
requirements of the Corporation and its subsidiaries and the availability of
other funds.
 
     Based upon the historical and anticipated future growth of the Corporation
and the financial needs of the Corporation and its subsidiaries, the Corporation
may engage in additional financings of a character and amount to be determined
as the need arises.
 
                   DESCRIPTION OF THE SUBORDINATED DEBENTURES
 
     The Subordinated Debentures are to be issued in one or more series under an
Indenture, dated as of June 4, 1998, as supplemented from time to time (as so
supplemented, the "Indenture") between the Corporation and The Chase Manhattan
Bank, as trustee (the "Indenture Trustee"). This summary of certain terms and
provisions of the 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 and the Trust Indenture Act. The form of Indenture has been filed
as an exhibit to the Registration Statement. The Indenture will be qualified
under the Trust Indenture Act.
 
GENERAL
 
     Each series of Subordinated Debentures will be unsecured and will rank
junior and be subordinate in right of payment to all Senior Indebtedness (as
defined below) of the Corporation. Each series of Subordinated Debentures will
rank pari passu with all other series of Subordinated Debentures issued under
the Indenture and with $200 million of obligations of the Corporation associated
with the Floating Rate Capital Securities issued by Huntington Capital I (the
"Outstanding Capital Securities"). Unless otherwise provided in the applicable
Prospectus Supplement, the Indenture does not limit the incurrence or issuance
of other secured or unsecured debt of the Corporation, whether under the
Indenture or any existing or other indenture that the Corporation may enter into
in the future or otherwise. See "-- Subordination." The Indenture also does not
limit the aggregate principal amount of Subordinated Debentures that may be
issued under the Indenture.
 
     The Subordinated Debentures are to be issued in one or more series pursuant
to an indenture supplemental to the Indenture or a resolution of the
Corporation's Board of Directors or a committee of the Board.
 
                                        8
<PAGE>   43
 
     The applicable Prospectus Supplement or Prospectus Supplements will
describe the following terms of the Subordinated Debentures:
 
        - the title of the Subordinated Debentures;
 
        - any limit upon the aggregate principal amount of the Subordinated
          Debentures;
 
        - the date or dates on which the principal of the Subordinated
          Debentures is payable (the "Stated Maturity") or the method of
          determination thereof;
 
        - the rate or rates, if any, at which the Subordinated Debentures shall
          bear interest, the dates on which any such interest shall be payable
          (the "Interest Payment Dates"), the right, if any, of the Corporation
          to defer or extend an Interest Payment Date, and the record dates for
          any interest payable on any Interest Payment Date or the method by
          which any of the foregoing shall be determined;
 
        - 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 Subordinated Debentures
          will be payable and where (subject to the terms of the Indenture as
          described below under "-- Denominations, Registration, and Transfer")
          the Subordinated Debentures may be presented for registration of
          transfer or exchange and the place or places where notices and demands
          to or upon the Corporation in respect of the Subordinated Debentures
          and the Indentures may be made ("Place of Payment");
 
        - any period or periods within which, or date or dates on which, the
          price or prices at which and the terms and conditions upon which the
          Subordinated Debentures may be redeemed, in whole or in part, at the
          option of the Corporation or a holder thereof;
 
        - the obligation or the right, if any, of the Corporation or a holder of
          the Subordinated Debentures to redeem, purchase, or repay the
          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 Subordinated Debentures shall be redeemed, repaid, or
          purchased, in whole or in part, pursuant to such obligation;
 
        - the denominations in which any Subordinated Debentures shall be
          issuable;
 
        - 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 on the Subordinated Debentures shall be payable, or
          in which the Subordinated Debentures shall be denominated;
 
        - any additions, modifications, or deletions in the events of default
          under the Indenture or covenants of the Corporation specified in the
          Indenture with respect to the Subordinated Debentures;
 
        - if other than the principal amount thereof, the portion of the
          principal amount of Subordinated Debentures that shall be payable upon
          declaration of acceleration of maturity;
 
        - any additions or changes to the Indenture with respect to a series of
          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;
 
        - any index or indices used to determine the amount of payments of
          principal of (and premium, if any) on the Subordinated Debentures and
          the manner in which such amounts will be determined;
 
        - the terms and conditions relating to the issuance of a temporary
          global security representing all of the Subordinated Debentures of
          such series and the exchange of such temporary global security for
          definitive Subordinated Debentures of such series;
 
        - subject to the terms described herein under " -- Global Subordinated
          Debentures," whether the Subordinated Debentures of the series shall
          be issued in whole or in part in the form of one or more
 
                                        9
<PAGE>   44
 
          global securities and, in such case, the Depository for such global
          securities, which Depository shall be a clearing agency registered
          under the Exchange Act;
 
        - the appointment of any paying agent or agents;
 
        - the terms and conditions of any obligation or right of the Corporation
          or a holder to convert or exchange the Subordinated Debentures into
          Capital Securities;
 
        - the form of Declaration and Guarantee; and
 
        - any other terms of the Subordinated Debentures not inconsistent with
          the provisions of the Indenture.
 
     The 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
Subordinated Debentures will be described in the applicable Prospectus
Supplement.
 
     If the purchase price of any of the Subordinated Debentures is payable in
one or more foreign currencies or currency units or if any Subordinated
Debentures are denominated in one or more foreign currencies or currency units
or if the principal of (and premium, if any) or interest, if any, on any
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 series
of 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
(and premium, if any) or interest on any series of Subordinated Debentures,
special United States federal income tax, accounting, and other considerations
applicable to such series will be described in the applicable Prospectus
Supplement.
 
DENOMINATIONS, REGISTRATION AND TRANSFER
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
Subordinated Debentures will be issuable only in registered form without
coupons. Subordinated Debentures of any series will be exchangeable for other
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.
 
     Subordinated Debentures may be presented for exchange as provided above,
and may be presented for registration of transfer (with the form of transfer
endorsed on such Subordinated Debentures, 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 the Corporation
for such purpose with respect to any series of Subordinated Debentures (which
may be specified in the applicable Prospectus Supplement), without service
charge and upon payment of any taxes and other governmental charges as described
in the Indenture. The Corporation will appoint the Indenture 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 the Corporation with respect to any series of
Subordinated Debentures, the Corporation 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 the Corporation maintains a transfer
agent in each Place of Payment for such series. The Corporation may at any time
designate additional transfer agents with respect to any series of Subordinated
Debentures.
 
     In the event of any redemption, neither the Corporation nor the Indenture
Trustee will be required to (a) issue, register the transfer of, or exchange
Subordinated Debentures of any series during the period beginning at the opening
of business 15 days before the day of selection for redemption of Subordinated
Debentures of that series and ending at the close of business on the day of
mailing of the relevant notice of redemption, or (b) transfer or exchange any
Subordinated Debentures so selected for redemption, except, in the case of any
Subordinated Debentures being redeemed in part, any portion not to be redeemed.
 
                                       10
<PAGE>   45
 
GLOBAL SUBORDINATED DEBENTURES
 
     The Subordinated Debentures of a series may be issued in whole or in part
in the form of one or more global Subordinated Debentures that will be deposited
with, or on behalf of, the Depository identified in the Prospectus Supplement
relating to such series. Global 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 Subordinated
Debentures represented by such global security, a global Subordinated Debenture
may not be transferred except as a whole by the Depository for such global
Subordinated Debenture to a nominee of such Depository or by a nominee of such
Depository to such Depository or another nominee of such Depository or by the
Depository or any nominee to a successor Depository or any nominee of such
successor.
 
     So long as the Depository for a global Subordinated Debenture, or its
nominee, is the registered owner of such global Subordinated Debenture, such
Depository or such nominee, as the case may be, will be considered the sole
owner or holder of the Subordinated Debentures represented by such global
Subordinated Debenture for all purposes under the Indenture governing such
Subordinated Debentures. Except as provided below, owners of beneficial
interests in a global Subordinated Debenture will not be entitled to have any of
the individual Subordinated Debentures of the series represented by such global
Subordinated Debenture registered in their names, will not receive or be
entitled to receive physical delivery of any such Subordinated Debentures of
such series in definitive form, and will not be considered the owners or holders
of such Subordinated Debentures under the Indenture. See "Book-Entry Issuance."
The specific terms of the depository arrangement with respect to a series of
Subordinated Debentures will be described in the Prospectus Supplement relating
to such series.
 
OPTION TO DEFER INTEREST PAYMENTS
 
     If provided in the applicable Prospectus Supplement, the Corporation will
have the right at any time and from time to time during the term of any series
of Subordinated Debentures to defer payment of interest for up to such number of
consecutive interest payment periods as may be specified in the applicable
Prospectus Supplement, 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 Subordinated Debentures.
Certain United States federal income tax consequences and special considerations
applicable to any such Subordinated Debentures will be described in the
applicable Prospectus Supplement.
 
REDEMPTION
 
     Unless otherwise indicated in the applicable Prospectus Supplement,
Subordinated Debentures will not be subject to any sinking fund.
 
     Unless otherwise indicated in the applicable Prospectus Supplement, the
Corporation may, at its option and subject to receipt of prior approval by the
Federal Reserve if such approval is then required under applicable capital
guidelines or policies, redeem the Subordinated Debentures of any series in
whole at any time or in part from time to time. If the 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. Except as otherwise specified in
the applicable Prospectus Supplement, the redemption price for any Subordinated
Debenture so redeemed shall equal any accrued and unpaid interest to the date
fixed for redemption, plus 100% of the principal amount of such Subordinated
Debenture. Except as otherwise specified in the applicable Prospectus
Supplement, if a Special Event (as defined below) in respect of a series of
Subordinated Debentures shall occur and be continuing, the Corporation may, at
its option and subject to the receipt of any necessary prior approval of the
Federal Reserve, redeem within 90 days following the occurrence of such Special
Event the Subordinated Debentures in whole (but not in part) at a redemption
price equal to 100% of the principal amount of such Subordinated Debentures then
outstanding plus accrued and unpaid interest to the date fixed for redemption,
except as otherwise specified in the applicable Prospectus.
 
     A "Special Event" means a Tax Event, a Regulatory Capital Event, or an
Investment Company Event. A "Tax Event" means the receipt by the Corporation of
an opinion of counsel, rendered by a law firm experienced in such matters, to
the effect that, as a result of (a) any amendment to, clarification of, change
in, or announced proposed change in the laws (or any regulations promulgated
under such laws) of the United States or any
                                       11
<PAGE>   46
 
political subdivision or taxing authority of the United States or (b) any
judicial decision, any official administrative pronouncement, ruling (including
any private letter ruling or technical advice memorandum, or field service
advice), revenue agent's report, regulatory procedure, notice, or pronouncement,
including any notice or announcement of intent to adopt such procedures or
regulations (an "Administrative Action"), regardless of whether such judicial
decision or Administrative Action is issued to or in connection with a
proceeding involving the Corporation or a Trust and whether or not subject to
review or appeal, which amendment, clarification, change, Administrative Action,
or decision is enacted, promulgated, or announced, in each case, on or after the
date of original issuance of the Capital Securities, there is more than an
insubstantial risk that:
 
        - the Trust 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 Corresponding Subordinated Debentures,
 
        - interest payable by the Corporation on such Corresponding Subordinated
          Debentures is not, or within 90 days of the date of such opinion will
          not be, deductible by the Corporation, in whole or in part, for United
          States federal income tax purposes, or
 
        - the Trust is, or will be within 90 days of the date of such opinion,
          subject to more than a de minimis amount of other taxes, duties, or
          other governmental charges.
 
     A "Regulatory Capital Event" means that the Corporation shall have received
an opinion of independent bank regulatory counsel experienced in such matters to
the effect that, as a result of (a) any amendment to or change (including any
announced prospective change) in the laws (or any regulations promulgated under
such laws) of the United States or any rules, guidelines, or policies of the
Federal Reserve, or (b) 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 pronouncement or decision is announced
or which action is taken on or after the date of original issuance of the
Capital Securities, the Capital Securities do not constitute, or within 90 days
of such date, will not constitute Tier 1 capital (or its then equivalent);
provided, however, that the distribution of the Subordinated Debentures in
connection with the liquidation of the Trust by the Corporation shall not in and
of itself constitute a Regulatory Capital Event unless such liquidation shall
have occurred in connection with a Tax Event or an Investment Company Event.
 
     An "Investment Company Event" means the receipt by the Trust of an opinion
of counsel, rendered by a law firm experienced in such matters, to the effect
that, as a result of the occurrence of a 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 (a "Change in 1940 Act
Law"), the Trust is or will be considered an "investment company" that is
required to be registered under the Investment Company Act of 1940, as amended,
which Change in 1940 Act Law becomes effective on or after the date of original
issuance of the Capital Securities.
 
     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 Subordinated Debentures to
be redeemed at its registered address. Unless the Corporation defaults in
payment of the redemption price, on and after the redemption date interest will
cease to accrue on such Subordinated Debentures or portions of such Subordinated
Debentures called for redemption.
 
CONVERSION OR EXCHANGE
 
     If and to the extent indicated in the applicable Prospectus Supplement, the
Subordinated Debentures of any series may be convertible or exchangeable into
Subordinated Debentures of another series or into Capital Securities of another
series. The specific terms on which 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 the Corporation, in
which case the number of shares of Capital Securities or other securities to be
received by the holders of Subordinated Debentures would be calculated as of a
time and in the manner stated in the applicable Prospectus Supplement.
 
                                       12
<PAGE>   47
 
CERTAIN COVENANTS OF THE CORPORATION
 
     The Corporation will covenant, as to each series of Corresponding
Subordinated Debentures, that if and so long as the Trust is the holder of all
Corresponding Subordinated Debentures, the Corporation, as borrower, will pay to
the Trust all fees and expenses related to the Trust and the offering of the
Related Capital Securities and will pay, directly or indirectly, all ongoing
costs, expenses, and liabilities of the Trust (including any taxes, duties,
assessments, or governmental charges of whatever nature (other than withholding
taxes) imposed by the United States or any domestic taxing authority upon the
Trust, but excluding obligations under the Related Capital Securities).
 
     The Corporation also will covenant, as to each series of Subordinated
Debentures, that it will not, and will not permit any subsidiary of the
Corporation to:
 
        - declare or pay any dividends or distributions on, or redeem, purchase,
          acquire, or make a liquidation payment with respect to, any of the
          Corporation's capital stock, or
 
        - make any payment of principal, interest, and premium, if any, on or
          repay, repurchase, or redeem any debt securities of the Corporation
          (including other Subordinated Debentures) that rank pari passu with or
          junior in interest to the Subordinated Debentures, or
 
        - make any guarantee payments with respect to any guarantee by the
          Corporation of the debt securities of any subsidiary of the
          Corporation if such guarantee ranks pari passu with or junior in
          interest to the Subordinated Debentures,
 
if at such time:
 
        - there shall have occurred any event of which the Corporation has
          actual knowledge that with the giving of notice or the lapse of time,
          or both, would constitute an Indenture Event of Default with respect
          to the Subordinated Debentures and in respect of which the Corporation
          shall not have taken reasonable steps to cure, or
 
        - the Corporation shall be in default with respect to its payment of any
          obligations under the Guarantee relating to any series of Capital
          Securities, or
 
        - the Corporation shall have given notice of its election of an
          Extension Period as provided in the Indenture and shall not have
          rescinded such notice, or such Extension Period, or any extension of
          such period, shall be continuing.
 
     The following are permitted exceptions to this covenant:
 
        - repurchases, redemptions, or other acquisitions of shares of capital
          stock of the Corporation in connection with any employment contract,
          benefit plan, or other similar arrangement with or for the benefit of
          any one or more employees, officers, directors, or consultants, or in
          connection with a dividend reinvestment or stockholder stock purchase
          plan or in connection with the issuance of common stock (or securities
          convertible into or exchangeable for common stock) as consideration in
          an acquisition transaction that was entered into prior to the
          commencement of an Extension Period);
 
        - as a result of an exchange or conversion of any class or series of the
          Corporation's capital stock (or any capital stock of a subsidiary of
          the Corporation) for any other class or series of the Corporation's
          capital stock or of any class or series of the Corporation's
          indebtedness for any class or series of the Corporation's capital
          stock;
 
        - the purchase of fractional interests in shares of the Corporation's
          capital stock pursuant to the conversion or exchange provisions of
          such capital stock or the security being converted or exchanged;
 
        - any declaration of a dividend in connection with any stockholders'
          rights plan, or the issuance of rights, stock, or other property under
          any stockholders' rights plan, or the redemption or repurchase of
          rights pursuant to such plan; or
 
                                       13
<PAGE>   48
 
        - any dividend in the form of stock, warrants, options, or other rights
          where the dividend stock or the stock issuable upon exercise of such
          warrants, options, or other rights is the same stock as that on which
          the dividend is being paid (or ranks pari passu with or junior to such
          stock).
 
SUBORDINATION
 
     The Subordinated Debentures will be subordinated and junior in right of
payment to all Senior Indebtedness and will be pari passu with all other series
of Subordinated Debentures issued under the Indenture and the $200 million of
obligations of the Corporation associated with the Outstanding Capital
Securities. Upon any payment or distribution of assets of the Corporation 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 the Corporation, the holders of Senior Indebtedness
will first be entitled to receive payment in full of the principal of (and
premium, if any) and interest, if any, on such Senior Indebtedness before the
holders of Subordinated Debentures or the holders of the obligations of the
Corporation associated with the Outstanding Capital Securities 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 Subordinated Debentures or the obligations of
the Corporation associated with the Outstanding Capital Securities; provided,
however, that holders of Senior Indebtedness shall not be entitled to receive
payment of any such amounts to the extent that such holders would be required by
the subordination provisions of such Senior Indebtedness to pay such amounts
over to the obligees on trade accounts payable or other liabilities arising in
the ordinary course of the Corporation's business.
 
     In the event of the acceleration of the maturity of any Subordinated
Debentures, the holders of all Senior Indebtedness outstanding at the time of
such acceleration will first be entitled to receive payment in full of all
amounts then due on such Senior Indebtedness (including any amounts due upon
acceleration of such Senior Indebtedness) before the holders of Subordinated
Debentures or the holders of the obligations of the Corporation associated with
the Outstanding Capital Securities 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 Subordinated Debentures or the obligations of the Corporation
associated with the Outstanding Capital Securities; provided, however, that
holders of Senior Indebtedness shall not be entitled to receive payment of any
such amounts to the extent that such holders would be required by the
subordination provisions of such Senior Indebtedness to pay such amounts over to
the obligees on trade accounts payable or other liabilities arising in the
ordinary course of the Corporation's business.
 
     No payments of principal (or premium, if any) or interest, if any, in
respect of the Subordinated Debentures may be made if there shall have occurred
and be continuing a default in any payment with respect to Senior Indebtedness,
or an event of default with respect to any Senior Indebtedness resulting in the
acceleration of the maturity of such Senior Indebtedness, or if any judicial
proceeding shall be pending with respect to any such default.
 
     "Senior Indebtedness" means, whether recourse is to all or a portion of the
assets of the Corporation and whether or not contingent:
 
        - every obligation of the Corporation for money borrowed;
 
        - every obligation of the Corporation evidenced by bonds, debentures,
          notes, or other similar instruments, including obligations incurred in
          connection with the acquisition of property, assets, or businesses;
 
        - every reimbursement obligation of the Corporation with respect to
          letters of credit, bankers' acceptances, or similar facilities issued
          for the account of the Corporation;
 
        - every obligation of the Corporation 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);
 
        - every capital lease obligation of the Corporation;
 
                                       14
<PAGE>   49
 
        - every obligation of the Corporation for claims (as defined in Section
          101(4) of the United States Bankruptcy Code of 1978, as amended) in
          respect of derivative products such as interest and foreign exchange
          rate contracts, commodity contracts, and similar arrangements; and
 
        - every obligation of the type referred to above of another person and
          all dividends of another person the payment of which, in either case,
          the Corporation has guaranteed or is responsible or liable for,
          directly or indirectly, as obligor or otherwise.
 
Notwithstanding the above, "Senior Indebtedness" shall not include:
 
        - any obligations which, by their terms, are expressly stated to rank
          pari passu in right of payment with, or to not be superior in right of
          payment to, the Subordinated Debentures, including the obligations
          associated with the Outstanding Capital Securities;
 
        - any indebtedness of the Corporation which when incurred was without
          recourse to the Corporation;
 
        - any indebtedness of the Corporation to any of its subsidiaries;
 
        - any indebtedness to an employee of the Corporation; or
 
        - any indebtedness in respect of debt securities issued to any trust, or
          a trustee of such trust, partnership, or other entity affiliated with
          the Corporation that is a financing entity of the Corporation in
          connection with the issuance by such financing entity of securities
          that are similar to the Capital Securities.
 
     The Indenture places no limitation on the amount of additional Senior
Indebtedness that may be incurred by the Corporation or any indebtedness or
other liabilities that may be incurred by the Corporation's subsidiaries. The
Corporation expects from time to time to incur additional indebtedness and other
obligations constituting Senior Indebtedness. Because the Corporation is a
holding company, the right of the Corporation to participate in any distribution
of assets of any subsidiary, including The Huntington National Bank, upon such
subsidiary's liquidation, reorganization, or otherwise, is subject to the prior
claims of creditors of that subsidiary, except to the extent the Corporation may
itself be recognized as a creditor of that subsidiary. Accordingly, the
Subordinated Debentures will be effectively subordinated to all existing and
future liabilities of the Corporation's subsidiaries, and holders of
Subordinated Debentures should look only to the assets of the Corporation for
payments on the Subordinated Debentures.
 
     The Indenture provides that the foregoing subordination provisions, insofar
as they relate to any particular issue of Subordinated Debentures, may be
changed prior to such issuance. Any such change would be described in the
applicable Prospectus Supplement.
 
INDENTURE EVENTS OF DEFAULT
 
     The Indenture provides that any one or more of the following described
events with respect to a series of Subordinated Debentures that has occurred and
is continuing constitutes an "Indenture Event of Default" with respect to such
series of Subordinated Debentures:
 
        - failure for 30 days to pay any interest on such series of Subordinated
          Debentures when due (subject to the deferral of any due date in the
          case of an Extension Period);
 
        - failure to pay any principal (or premium, if any) on such series of
          Subordinated Debentures when due whether at maturity, upon redemption,
          or otherwise;
 
        - failure to observe or perform in any material respect any other
          covenant contained in the Indenture for 90 days after written notice
          to the Corporation from the Indenture Trustee or the holders of at
          least 25% in aggregate outstanding principal amount of such affected
          series of outstanding Subordinated Debentures; or
 
        - certain events in bankruptcy, insolvency, or reorganization of the
          Corporation.
 
                                       15
<PAGE>   50
 
     The holders of a majority in aggregate outstanding principal amount of
Subordinated Debentures of each series affected have the right to direct the
time, method, and place of conducting any proceeding for any remedy available to
the Indenture Trustee. The Indenture Trustee or the holders of not less than 25%
in aggregate outstanding principal amount of Subordinated Debentures of each
series affected may declare the principal due and payable immediately upon an
Indenture Event of Default, and, in the case of Corresponding Subordinated
Debentures, should the Indenture Trustee or such holders of such Corresponding
Subordinated Debentures fail to make such declaration, the holders of at least
25% in aggregate liquidation amount of the Related Capital Securities shall have
such right.
 
     The holders of a majority in aggregate outstanding principal amount of
Subordinated Debentures of each series affected may annul such declaration and
waive the default if the default (other than the non-payment of the principal of
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
Indenture Trustee. In the case of Corresponding Subordinated Debentures, should
the holders of such Corresponding Subordinated Debentures fail to annul such
declaration and waive such default, the holders of a majority in aggregate
liquidation amount of the Related Capital Securities shall have such right.
 
     The holders of a majority in aggregate outstanding principal amount of each
series of Subordinated Debentures affected thereby may, on behalf of the holders
of all the Subordinated Debentures of such series, 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
Indenture 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 Subordinated Debenture of such series. In the case of
Corresponding Subordinated Debentures, should the holders of such Corresponding
Subordinated Debentures fail to waive such default, the holders of a majority in
aggregate liquidation amount of the Related Capital Securities shall have such
right. The Corporation is required to file annually with the Indenture Trustee a
certificate as to whether or not the Corporation is in compliance with all the
conditions and covenants applicable to it under the Indenture.
 
     In case an Indenture Event of Default shall occur and be continuing as to a
series of Corresponding Subordinated Debentures, the Property Trustee will have
the right to declare the principal of and the interest on such Corresponding
Subordinated Debentures and any other amounts payable under the Indenture to be
immediately due and payable and to enforce its other rights as a creditor with
respect to such Subordinated Debentures.
 
ENFORCEMENT OF CERTAIN RIGHTS BY HOLDERS OF CAPITAL SECURITIES
 
     If an Indenture Event of Default with respect to a series of Corresponding
Subordinated Debentures has occurred and is continuing and such event is
attributable to the failure of the Corporation to pay interest or principal on
such Corresponding 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 the Corporation for enforcement of
payment to such holder of the principal of or interest on such Corresponding
Subordinated Debentures having a principal amount equal to the aggregate
liquidation amount of the Related Capital Securities of such holder (a "Direct
Action"). The Corporation 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 outstanding. The Corporation shall have the
right under the Indenture to set-off any payment made to such holder of Capital
Securities by the Corporation in connection with a Direct Action.
 
     Except as otherwise described in the Prospectus Supplement, the holders of
Capital Securities will not be able to exercise directly any other remedy
available to the holders of the Subordinated Debentures, unless there shall have
been an event of default under the Declaration. See "Description of the Capital
Securities -- Trust Enforcement Events."
 
                                       16
<PAGE>   51
 
CONSOLIDATION, MERGER, SALE OF ASSETS, AND OTHER TRANSACTIONS
 
     The Indenture provides that the Corporation 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, unless:
 
        - in case the Corporation consolidates with or merges into another
          Person or conveys, transfers, or leases 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 the
          Corporation's obligations on the Subordinated Debentures issued under
          the Indenture;
 
        - immediately after giving effect to such transaction, no Indenture
          Event of Default, and no event which, after notice or lapse of time or
          both, would become an Indenture Event of Default, shall have happened
          and be continuing;
 
        - if at the time any Capital Securities are outstanding, such
          transaction is permitted under the related Declaration and related
          Guarantee and does not give rise to any breach or violation of such
          Declaration or Guarantee;
 
        - any such lease provides that it will remain in effect so long as any
          Subordinated Debentures are outstanding; and
 
        - certain other conditions prescribed in the Indenture are met.
 
     The general provisions of the Indenture do not afford holders of the
Subordinated Debentures protection in the event of a highly leveraged or other
transaction involving the Corporation that may adversely affect holders of the
Subordinated Debentures.
 
MODIFICATION OF INDENTURE
 
     From time to time the Corporation and the Indenture Trustee may, without
the consent of the holders of any series of 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 Subordinated Debentures), and qualifying, or maintaining the
qualification of, the Indenture under the Trust Indenture Act.
 
     The Indenture contains provisions permitting the Corporation and the
Indenture Trustee, with the consent of the holders of not less than a majority
in principal amount of each outstanding series of Subordinated Debentures
affected, to modify the Indenture in a manner affecting the rights of the
holders of such series of Subordinated Debentures in any material respect.
However, no such modification may, without the consent of the holder of each
outstanding Subordinated Debentures so affected, (a) change the Stated Maturity
of any series of Subordinated Debentures, or reduce the principal amount of any
series of Subordinated Debentures, or reduce the rate or extend the time of
payment of interest on such series of Subordinated Debentures (except as is
otherwise contemplated by the Prospectus Supplement), or (b) reduce the
percentage of principal amount of Subordinated Debentures of any series, the
holders of which are required to consent to any such modification of the
Indenture.
 
     In addition, in the case of Corresponding 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 Indenture 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 amount of all
outstanding Related Capital Securities affected unless and until the principal
of the Corresponding Subordinated Debentures and all accrued and unpaid interest
have been paid in full and certain other conditions are satisfied.
 
     The Corporation and the Indenture Trustee may execute, without the consent
of any holder of Subordinated Debentures, any supplemental Indenture for the
purpose of creating any new series of Subordinated Debentures.
 
                                       17
<PAGE>   52
 
DEFEASANCE AND DISCHARGE
 
     The Indenture provides that the Corporation, at the Corporation's option:
(a) will be discharged from any and all obligations in respect of the
Subordinated Debentures (except for certain obligations to register the transfer
or exchange of Subordinated Debentures, replace stolen, lost, or mutilated
Subordinated Debentures, maintain paying agencies, and hold moneys for payment
in trust) or (b) need not comply with certain restrictive covenants of the
Indenture (including that described in the second paragraph under "Certain
Covenants of the Corporation"), in each case if the Corporation deposits, in
trust with the Indenture Trustee, money or U.S. Government Obligations which
through the payment of interest and principal in accordance with their terms
will provide money, in an amount sufficient to pay all the principal of (and
premium, if any) and interest on the Subordinated Debentures on the dates such
payments are due in accordance with the terms of such Subordinated Debentures.
 
     To exercise any such option, the Corporation is required to deliver to the
Indenture Trustee an opinion of counsel to the effect that the deposit and
related defeasance would not cause the holders of the Subordinated Debentures to
recognize income, gain, or loss for United States federal income tax purposes
and, in the case of a discharge pursuant to clause (a), such opinion shall be
accompanied by a private letter ruling to that effect received by the
Corporation from the United States Internal Revenue Service or revenue ruling
pertaining to a comparable form of transaction to such effect published by the
United States Internal Revenue Service.
 
DISTRIBUTIONS OF SUBORDINATED DEBENTURES; BOOK-ENTRY ISSUANCE
 
     Under certain circumstances involving the dissolution of a Trust,
Corresponding Subordinated Debentures may be distributed to the holders of the
Related Capital Securities in liquidation of the Trust after satisfaction of
liabilities to creditors of the Trust as provided by applicable law. If
distributed to holders of Related Capital Securities in liquidation, the
Corresponding Subordinated Debentures will initially be issued in the form of
global securities and certificated securities. The Depository, or any successor
depositary, will act as depositary for such global securities. It is anticipated
that the depositary arrangements for and certain restrictions with respect to
such global securities would be substantially identical to those in effect for
the Related Capital Securities. For a description of global securities and
certificated securities, see "Book-Entry Issuance."
 
     There can be no assurance as to the market price of any Corresponding
Subordinated Debentures that may be distributed to the holders of the Related
Capital Securities.
 
PAYMENT AND PAYING AGENTS
 
     Unless otherwise indicated in the applicable Prospectus Supplement, the
Corporation initially will act as Paying Agent with respect to the Subordinated
Debentures of a series except that, if the Corresponding Subordinated Debentures
are distributed to the holders of the Related Capital Securities in liquidation
of such holders' interests in the Trust, the Indenture Trustee will act as the
Paying Agent. The Corporation at any time may designate additional Paying Agents
or rescind the designation of any Paying Agent or approve a change in the office
through which any Paying Agent acts, except that the Corporation will be
required to maintain a Paying Agent at the Place of Payment.
 
     Any moneys deposited with the Indenture Trustee or any Paying Agent, or
then held by the Corporation in trust, for the payment of the principal of (and
premium, if any) or interest on any Subordinated Debentures and remaining
unclaimed for one year after such principal (and premium, if any) or interest
has become due and payable shall, at the request of the Corporation, be repaid
to the Corporation and the holder of such Subordinated Debentures shall
thereafter look, as a general unsecured creditor, only to the Corporation for
payment.
 
GOVERNING LAW
 
     The Indenture and the Subordinated Debentures will be governed by and
construed in accordance with the laws of the State of New York.
 
                                       18
<PAGE>   53
 
INFORMATION CONCERNING THE INDENTURE TRUSTEE
 
     The Indenture 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 Indenture Trustee is under no
obligation to exercise any of the powers vested in it by the Indenture at the
request of any holder of Subordinated Debentures of any series, unless offered
reasonable indemnity by such holder against the costs, expenses, and liabilities
which might be incurred in connection with the Trustee's exercise of such
powers. The Indenture 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 Indenture Trustee reasonably believes that repayment or adequate indemnity
is not reasonably assured to it.
 
CORRESPONDING SUBORDINATED DEBENTURES
 
     The Corresponding Subordinated Debentures may be issued in one or more
series of 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 Trust's Capital Securities, such Trust
will invest the proceeds of the Capital Securities and the consideration paid by
the Corporation for the Common Securities of such Trust in such series of
Corresponding Subordinated Debentures issued by the Corporation to such Trust.
Each series of Corresponding 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 Trust and will rank pari passu with
all other series of Subordinated Debentures and with the Outstanding Capital
Securities. Holders of the Related Capital Securities for a series of
Corresponding Subordinated Debentures will have the rights in connection with
modifications to the Indenture or upon occurrence of Indenture Events of
Default, as described under "-- Modification of Indenture" and "-- Indenture
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
Special Event in respect of a Trust shall occur and be continuing, the
Corporation may, at its option and subject to prior approval of the Federal
Reserve if then so required under applicable capital guidelines or policies,
redeem the Corresponding Subordinated Debentures at any time within 90 days of
the occurrence of such Special Event, in whole but not in part, subject to the
provisions of the Indenture and whether or not such Corresponding Subordinated
Debentures are then otherwise redeemable at the option of the Corporation. The
redemption price for any Corresponding Subordinated Debentures shall be equal to
100% of the principal amount of such Corresponding Subordinated Debentures then
outstanding plus accrued and unpaid interest to the date fixed for redemption.
For so long as the applicable Trust is the holder of all the outstanding
Corresponding Subordinated Debentures of such Trust, the proceeds of any such
redemption will be used by the Trust to redeem the corresponding Trust
Securities in accordance with their terms. The Corporation may not redeem a
series of Corresponding Subordinated Debentures in part unless all accrued and
unpaid interest has been paid in full on all outstanding Corresponding
Subordinated Debentures of such series for all interest periods terminating on
or prior to the redemption date.
 
     The Corporation will covenant, as to each series of Corresponding
Subordinated Debentures, that if and so long as (a) the Trust of the related
series of Trust Securities is the holder of all such Corresponding Subordinated
Debentures, (b) a Tax Event in respect of such Trust has occurred and is
continuing and (c) the Corporation has elected, and has not revoked such
election, to pay Additional Sums (as defined under "Description of the Capital
Securities -- Redemption or Exchange") in respect of such Trust Securities, the
Corporation will pay to such Trust such Additional Sums.
 
     The Corporation also will covenant, as to each series of Corresponding
Subordinated Debentures, to maintain directly or indirectly 100% ownership of
the Common Securities of the Trust to which such Corresponding Subordinated
Debentures have been issued, provided that certain successors which are
permitted pursuant to the Indenture may succeed to the Corporation's ownership
of the Common Securities, (b) not to voluntarily dissolve, wind-up, or liquidate
any Trust, except:
 
        - in connection with a distribution of Corresponding Subordinated
          Debentures to the holders of the Related Capital Securities in
          exchange for such Related Capital Securities upon liquidation of such
          Trust,
                                       19
<PAGE>   54
 
        - in connection with certain mergers, consolidations, or amalgamations
          permitted by the related Declaration, in either such case, if so
          specified in the applicable Prospectus Supplement, upon prior approval
          of the Federal Reserve if then so required under applicable Federal
          Reserve capital guidelines or policies, and
 
        - to use its reasonable efforts, consistent with the terms and
          provisions of the related Declaration, to cause such Trust to be
          classified as a grantor trust and not as an association taxable as a
          corporation for United States Federal income tax purposes.
 
                                       20
<PAGE>   55
 
                     DESCRIPTION OF THE CAPITAL SECURITIES
 
     This summary of certain provisions of the Capital Securities and each
Declaration does not purport to be complete and is subject to, and is qualified
in its entirety by reference to, the Trust Indenture Act and all the provisions
of such Declaration, including the definitions in the Declaration of certain
terms. Wherever particular defined terms of a Declaration (as supplemented or
amended from time to time) are referred to in this Prospectus or a Prospectus
Supplement, the definitions of such defined terms are incorporated in this
Prospectus or such Prospectus Supplement by reference. The form of Declaration
has been filed as an exhibit to the Registration Statement.
 
GENERAL
 
     Pursuant to the terms of the Declaration for each Trust, the Trust will
issue the Capital Securities and the Common Securities. The Capital Securities
of a particular Trust will represent undivided preferred beneficial ownership
interests in the assets of that Trust and the holders of such Capital Securities
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 Trust, as well as other benefits as described in the
corresponding Declaration. Each of the Trusts is a legally separate entity and
the assets of one are not available to satisfy the obligation of the other.
 
     The Capital Securities of a Trust will rank pari passu, and payments will
be made pro rata, with the Common Securities of that Trust except as described
under "-- Subordination of Common Securities." Legal title to the Corresponding
Subordinated Debentures will be held by the Property Trustee in trust for the
benefit of the holders of the Related Capital Securities and the Common
Securities. Each Guarantee executed by the Corporation for the benefit of the
holders of a Trust's Trust Securities will be a guarantee on a subordinated
basis with respect to such Capital Securities but will not guarantee payment of
Distributions or amounts payable on redemption or liquidation of such Trust
Securities when the related Trust does not have sufficient funds available to
make such payments. See "Description of the Guarantees." The Corporation's
obligations under the related Guarantee, taken together with its obligations
under the Corresponding Subordinated Debentures and the Indenture, including its
obligation to pay all costs, expenses, and liabilities of the related Trust
(other than with respect to the Related Capital Securities), constitute a full
and unconditional guarantee of all of the Trust's obligations under the Trust
Securities.
 
     The denomination of the Capital Securities of a Trust is the liquidation
amount as specified in the applicable Prospectus Supplement. Holders of the
Capital Securities have no preemptive or similar rights.
 
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 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
additional Distributions 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
either case with the same force and effect as if made on the date such payment
was originally payable (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 or the City of Columbus 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 is closed for business.
 
     Each Trust's Capital Securities represent preferred beneficial interests in
the applicable Trust, and the Distributions on each Capital Security will be
payable at a rate specified in the applicable 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
                                       21
<PAGE>   56
 
rate per annum if and as specified in the applicable Prospectus Supplement. The
term "Distributions" as used in this Prospectus includes any such additional
Distributions unless otherwise stated.
 
     If provided in the applicable Prospectus Supplement, the Corporation has
the right under the Indenture, pursuant to which it will issue the Corresponding
Subordinated Debentures, to defer the payment of interest at any time or from
time to time on any series of the Corresponding Subordinated Debentures for up
to such number of consecutive interest payment periods which will be specified
in such Prospectus Supplement relating to such series, provided that no
Extension Period may extend beyond the Stated Maturity of the Corresponding
Subordinated Debentures. As a consequence of any such deferral, Distributions on
the Related 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 Trust of such
Capital Securities during any such Extension Period.
 
     During any such Extension Period, the Corporation may not, and may not
permit any subsidiary of the Corporation to:
 
        - declare or pay any dividends or distributions on, or redeem, purchase,
          acquire, or make a liquidation payment with respect to, the
          Corporation's capital stock, or
 
        - make any payment of principal, interest, or premium, if any, on or
          repay, repurchase, or redeem any debt securities that rank pari passu
          with or junior to the Corresponding Subordinated Debentures, or
 
        - make any guarantee payments with respect to any guarantee by the
          Corporation of the debt securities of any subsidiary of the
          Corporation if such guarantee ranks pari passu with or junior to the
          Corresponding Subordinated Debentures.
 
The following are permitted exceptions to this covenant:
 
        - repurchases, redemptions, or other acquisitions of shares of capital
          stock of the Corporation in connection with any employment contract,
          benefit plan, or other similar arrangement with or for the benefit of
          any one or more employees, officers, directors, or consultants, or in
          connection with a dividend reinvestment or stockholder stock purchase
          plan or in connection with the issuance of common stock (or securities
          convertible into or exchangeable for common stock) as consideration in
          an acquisition transaction that was entered into prior to the
          commencement of such Extension Period);
 
        - as a result of an exchange or conversion of any class or series of the
          Corporation's capital stock (or any capital stock of a subsidiary of
          the Corporation) for any other class or series of the Corporation's
          capital stock or of any class or series of the Corporation's
          indebtedness for any class or series of the Corporation's capital
          stock;
 
        - the purchase of fractional interests in shares of the Corporation's
          capital stock pursuant to the conversion or exchange provisions of
          such capital stock or the security being converted or exchanged;
 
        - any declaration of a dividend in connection with any stockholders'
          rights plan, or the issuance of rights, stock, or other property under
          any stockholders' rights plan, or the redemption or repurchase of
          rights pursuant to such plan;
 
        - any dividend in the form of stock, warrants, options, or other rights
          where the dividend stock or the stock issuable upon exercise of such
          warrants, options, or other rights is the same stock as that on which
          the dividend is being paid (or ranks pari passu with or junior to such
          stock).
 
     Prior to the termination of any such Extension Period, the Corporation may
further extend the Extension Period, provided that no Extension Period may
extend beyond the Stated Maturity of the Corresponding Subordinated Debentures
or exceed the number of consecutive interest payment periods specified in the
Prospectus Supplement relating to such series. Upon the termination of any such
Extension Period and the payment of all amounts then due on any Interest Payment
Date, the Corporation may elect to begin a new
 
                                       22
<PAGE>   57
 
Extension Period subject to the foregoing requirements. See "Description of the
Subordinated Debentures -- Option to Defer Interest Payments."
 
     The revenue of each Trust available for distribution to holders of its
Capital Securities will be limited to payments under the Corresponding
Subordinated Debentures in which the Trust will invest the proceeds from the
issuance and sale of its Trust Securities. See "Description of the Subordinated
Debentures -- Corresponding Subordinated Debentures." If the Corporation does
not make interest payments on such Corresponding 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 Trust has funds legally available for the payment of such Distributions and
cash sufficient to make such payments) is guaranteed by the Corporation on a
limited basis as described in this Prospectus under "Description of the
Guarantees."
 
     Distributions on the Capital Securities will be payable to the holders of
such Capital Securities as they appear on the register of such Trust 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 Declaration, each such payment will be made as described under
"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
 
     Mandatory Redemption. Upon the repayment or redemption, in whole or in
part, of any Corresponding 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 (defined below) of Trust Securities upon not less than 30 nor more
than 60 days' notice prior to the date fixed for repayment or redemption at a
redemption price (the "Redemption Price") equal to the aggregate liquidation
amount of such Trust Securities plus accumulated but unpaid Distributions to the
date of redemption (the "Redemption Date") and the related amount of the
premium, if any, paid by the Corporation upon the concurrent redemption of such
Corresponding Subordinated Debentures. See "Description of the Subordinated
Debentures  -- Redemption."
 
     If less than all of any series of Corresponding 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
Trust Securities. The amount of premium, if any, paid by the Corporation upon
the redemption of all or any part of any series of any Corresponding
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.
 
     The Corporation will have the right to redeem any series of Corresponding
Subordinated Debentures (a) 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, (b) at any time, in whole (but not in part), upon the occurrence of a
Special Event, or (c) 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 so required under applicable Federal Reserve capital guidelines
or policies.
 
     Distribution of Corresponding Subordinated Debentures. Subject to the
Corporation having received prior approval of the Federal Reserve to do so if
such approval is then required under applicable capital guidelines or policies
of the Federal Reserve, the Corporation has the right at any time to dissolve
any Trust and, after satisfaction of the claims of creditors of the Trust as
provided by applicable law, cause such Corresponding Subordinated Debentures in
respect of the Capital Securities and Common Securities issued by such Trust to
be distributed to the holders of such Related Capital Securities and Common
Securities in exchange for such securities in liquidation of the Trust.
 
     Special Event Redemption. If a Special Event in respect of a series of
Trust Securities shall occur and be continuing, the Corporation will have the
right, subject to the receipt of any necessary prior approval of the Federal
Reserve, to redeem within 90 days following the occurrence of such Special Event
the Corresponding
 
                                       23
<PAGE>   58
 
Subordinated Debentures on the Redemption Date in whole (but not in part) and
thereby cause a mandatory redemption of such Trust Securities in whole (but not
in part) at a redemption price with respect to such Trust Securities equal to
the redemption price in respect of the Subordinated Debentures. In the event a
Special Event in respect of a series of Trust Securities has occurred and is
continuing and the Corporation does not elect to redeem the Corresponding
Subordinated Debentures and thereby cause a mandatory redemption of such Capital
Securities or to liquidate the related Trust and cause the Corresponding
Subordinated Debentures to be distributed to holders of such Trust Securities in
exchange upon liquidation of the Trust as described above, such Capital
Securities will remain outstanding and Additional Sums (as defined below) may be
payable on the Corresponding Subordinated Debentures.
 
     "Additional Sums" means the additional amounts as may be necessary in order
that the amount of Distributions then due and payable by a Trust on the
outstanding Trust Securities of such Trust shall not be reduced as a result of
any additional taxes, duties, and other governmental charges to which such Trust
has become subject as a result of a Tax Event.
 
     "Like Amount" means (a) with respect to a redemption of any series of Trust
Securities, Trust Securities of such series having a liquidation amount equal to
the principal amount of Corresponding Subordinated Debentures to be
contemporaneously redeemed in accordance with the Indenture, the proceeds of
which will be used to pay the Redemption Price of such Trust Securities, and (b)
with respect to a distribution of Corresponding Subordinated Debentures to
holders of any series of Trust Securities in connection with a dissolution or
liquidation of the related Trust, Corresponding Subordinated Debentures having a
principal amount equal to the liquidation amount of the Trust Securities in
respect of which such distribution is made.
 
     Under current United States federal income tax law and interpretations of
such law and assuming, as expected, the Trust is treated as a grantor trust and
not an association taxable as a corporation, a distribution of the Subordinated
Debentures should not be a taxable event to holders of the Capital Securities.
However, should there be a change in law, a change in legal interpretation,
certain Tax Events, or other circumstances, the distribution could be a taxable
event to holders of the Capital Securities. The applicable Prospectus Supplement
will provide a description of the United States federal income tax consequences
of a distribution of the Subordinated Debentures.
 
REDEMPTION PROCEDURES
 
     Capital Securities redeemed on each Redemption Date shall be redeemed at
the Redemption Price with the applicable proceeds from the contemporaneous
redemption or payment at Stated Maturity of the Corresponding 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 Trust has sufficient funds available for the payment of such
Redemption Price. See also "-- Subordination of Common Securities."
 
     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. If a Trust 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 the Depository or its nominee funds sufficient to
pay the applicable Redemption Price and will give the Depository irrevocable
instructions and authority to pay the Redemption Price to the holders of such
Capital Securities. See "Book-Entry Issuance." If any such Capital Securities
are held in certificated 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
the paying agent irrevocable instructions and authority to pay the Redemption
Price to the holders of such Capital Securities upon surrender of their
certificates evidencing the Capital Securities.
 
     Notwithstanding the foregoing, Distributions payable on or prior to the
Redemption Date for any Capital Security called for redemption shall be payable
to the holders of such Capital Security 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
 
                                       24
<PAGE>   59
 
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 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 each case with the same force and effect
as if made on the date such payment was originally payable. 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 Trust or
by the Corporation pursuant to the Guarantee as described under "Description of
the Guarantees," Distributions on such Capital Securities will continue to
accrue at the then applicable rate, from the Redemption Date originally
established by the Trust for the 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) and to the provisions of the applicable Declaration, the
Corporation 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 Subordinated Debentures to holders of Capital
Securities shall be made to the applicable recordholders of such securities 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.
 
     A Trust may not redeem fewer than all of the outstanding Trust Securities
unless all accrued and unpaid Distributions have been paid on all Trust
Securities for all distribution periods ending on or prior to the date of
redemption. If less than all of the Capital Securities and Common Securities
issued by a Trust are to be redeemed on a Redemption Date, then the aggregate
amount of such Capital Securities and Common Securities to be redeemed shall be
allocated pro rata among the Capital Securities and the Common Securities.
 
     If the Capital Securities are in book-entry form, they will be redeemed as
described below under "Book-Entry Issuance." If not, 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 of the liquidation amount of Capital
Securities in such denomination as will be specified in the applicable
Prospectus Supplement. 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 of such Capital Securities to be redeemed. For all purposes
of each Declaration, unless the context otherwise requires, all provisions
relating to the redemption of Capital Securities shall relate, in the case of
any Capital Security 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.
 
SUBORDINATION OF COMMON SECURITIES
 
     Payment of Distributions on, and the Redemption Price of, each Trust's
Capital Securities and Common Securities, as applicable, shall be made pro rata
based on the liquidation amount of such Trust Securities; provided, however,
that if on any Distribution Date or Redemption Date an Indenture Event of
Default shall have occurred and be continuing, no payment of any Distribution
on, or Redemption Price of, any of the Common Securities of such Trust, 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 Trust's outstanding Capital
Securities for all Distribution periods on or prior to such payment, or in the
case of payment of the Redemption Price, the full amount of such Redemption
Price on all of
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<PAGE>   60
 
the Trust'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, such Capital Securities then due and payable.
 
LIQUIDATION DISTRIBUTION UPON DISSOLUTION
 
     Pursuant to each Declaration, each Trust shall automatically dissolve upon
expiration of its term and shall dissolve on the first to occur of:
 
        - any liquidation, insolvency, or similar proceeding with respect to the
          Corporation or all or substantially all of its property;
 
        - the distribution of a Like Amount of the Corresponding Subordinated
          Debentures to the holders of the Trust's Capital Securities and Common
          Securities (subject to the Corporation having received prior approval
          of the Federal Reserve to do so if such approval is then required
          under applicable capital guidelines or policies of the Federal
          Reserve);
 
        - the redemption of all of the Trust's Capital Securities in connection
          with the maturity or redemption of all of the Subordinated Debentures;
          and
 
        - the entry by a court of competent jurisdiction of an order for the
          dissolution of the Trust. Notice of such dissolution shall be given to
          the holders of the Common Securities and Capital Securities by the
          Declaration Trustees within 30 days of such event.
 
     If an early dissolution occurs for any reason other than the maturity or
redemption of all of the Subordinated Debentures, the Trust shall be liquidated
by the Declaration Trustees as expeditiously as the Declaration Trustees
determine to be possible by distributing, after satisfaction of liabilities to
creditors of the Trust as provided by applicable law, to the holders of such
Capital Securities and Common Securities a Like Amount of the Corresponding
Subordinated Debentures, unless such distribution is determined by the Property
Trustee not to be practicable, in which event such holders will be entitled to
receive out of the assets of the Trust available for distribution to holders,
after satisfaction of liabilities to creditors of such Trust 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 to the date of payment (such amount being the "Liquidation
Distribution"). If such Liquidation Distribution can be paid only in part
because such Trust has insufficient assets available to pay in full the
aggregate Liquidation Distribution, then the amounts payable directly by such
Trust on its Capital Securities shall be paid on a pro rata basis. The holder(s)
of such Trust'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 an Indenture Event of Default has occurred and is continuing, the
Capital Securities shall have a priority over the Common Securities.
 
     After the liquidation date is fixed for any distribution of Corresponding
Subordinated Debentures for any series of Capital Securities:
 
        - such Capital Securities will no longer be deemed to be outstanding,
 
        - the Depository for such series or its nominee, as a record holder of
          such Capital Securities, will receive a registered global certificate
          or certificates representing the Corresponding Subordinated Debentures
          to be delivered upon such distribution, and
 
        - any certificates representing such series of Capital Securities held
          in certificated form will be deemed to represent the Corresponding
          Subordinated Debentures having a principal amount equal to the
          liquidation amount of such series of Capital Securities, 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 for cancellation. At that time, the
          Corporation will issue to such holder, and the Indenture Trustee will
          authenticate, a certificate representing such Subordinated Debentures.
 
     There can be no assurance as to the market prices for the Capital
Securities of a series or the Corresponding Subordinated Debentures that may be
distributed in exchange for such Capital Securities if a dissolution and
 
                                       26
<PAGE>   61
 
liquidation of a Trust were to occur. Accordingly, the Capital Securities that
an investor may purchase, or the Corresponding Subordinated Debentures that the
investor may receive on dissolution and liquidation of a Trust, may trade at a
discount to the price that the investor paid to purchase the Capital Securities
offered by this Prospectus.
 
TRUST ENFORCEMENT EVENTS
 
     An Indenture Event of Default constitutes a Trust Enforcement Event under
each Declaration with respect to the series of Trust Securities issued under
such Declaration, provided that pursuant to such Declaration, the Corporation,
as holder of the Common Securities of such Trust, will be deemed to have waived
any Trust Enforcement Event with respect to such Common Securities and will be
deemed to have waived any right to act with respect to such Trust Enforcement
Event until all Trust Enforcement Events with respect to the Capital Securities
issued under such Trust have been cured, waived, or otherwise eliminated. Until
such Trust Enforcement Event with respect to such Capital Securities has been so
cured, waived, or otherwise eliminated, the Property Trustee will be deemed to
be acting solely on behalf of the holders of such Capital Securities and only
the holders of such Capital Securities will have the right to direct the
Property Trustee with respect to certain matters under that Declaration, and
therefore the Indenture.
 
     Upon the occurrence of a Trust Enforcement Event, the Indenture Trustee or
the Property Trustee, as the holder of Subordinated Debentures, will have the
right under the Indenture to declare the principal of and interest on the
affected Subordinated Debentures to be immediately due and payable. The
Corporation and each Trust is required to file annually with the applicable
Property Trustee an officer's certificate as to its compliance with all
conditions and covenants under the Declaration.
 
     If the Property Trustee fails to enforce its rights with respect to the
Corresponding Subordinated Debentures held by a Trust, any record holder of
Related Capital Securities may, to the fullest extent permitted by law,
institute legal proceedings directly against the Corporation to enforce the
Property Trustee's rights under such Corresponding Subordinated Debentures
without first instituting any legal proceedings against such Property Trustee or
any other person or entity. In addition, if a Trust Enforcement Event has
occurred and is continuing and such event is attributable to the failure of the
Corporation to pay interest, principal, or other required payments on the
Subordinated Debentures issued to the Trust on the date such interest,
principal, or other payment is otherwise payable, then a record holder of
Related Capital Securities may, on or after the respective due dates specified
in the Subordinated Debentures, institute a proceeding directly against the
Corporation under the Indenture for enforcement of payment on Subordinated
Debentures having a principal amount equal to the aggregate liquidation amount
of the Capital Securities held by such holder. In connection with such Direct
Action, the Corporation will be subrogated to the rights of such record holder
of Capital Securities to the extent of any payment made by the Corporation to
such record holder of Capital Securities.
 
VOTING RIGHTS; AMENDMENT OF EACH DECLARATION
 
     Except as provided below and under "Description of the
Guarantees -- Amendments and Assignment" and as otherwise required by law and
the applicable Declaration, the holders of the Capital Securities will have no
voting rights. The Regular Trustees are required to call a meeting of the
holders of the Capital Securities if directed to do so by holders of at least
10% in aggregate liquidation amount of the Capital Securities.
 
     So long as any Corresponding Subordinated Debentures are held by the
Property Trustee, the Declaration Trustees shall not, without obtaining the
prior approval of the holders of a majority in aggregate liquidation amount of
the Related Capital Securities:
 
        - direct the time, method, and place of conducting any proceeding for
          any remedy available to the Indenture Trustee or executing any trust
          or power conferred on the Property Trustee with respect to such
          Corresponding Subordinated Debentures,
 
        - waive any past default that is waivable under the Indenture,
 
        - exercise any right to rescind or annul any declaration that the
          principal of all such Corresponding Subordinated Debentures shall be
          due and payable, or
                                       27
<PAGE>   62
 
        - consent to any amendment, modification, or termination of the
          Indenture or such Corresponding Subordinated Debentures, where such
          consent shall be required,
 
provided, however, that where a consent under the Indenture would require the
consent of each holder of Corresponding Subordinated Debentures affected
thereby, no such consent shall be given by the Property Trustee without the
prior consent of each holder of Related Capital Securities.
 
     The Trustees shall not revoke any action previously authorized or approved
by a vote of the holders of the Related Capital Securities except pursuant to a
subsequent vote of the holders of the Related Capital Securities. The Property
Trustee shall notify each holder of record of the Related Capital Securities of
any notice of default which it receives with respect to the Corresponding
Subordinated Debentures. In addition to obtaining the foregoing approvals of the
holders of the Related Capital Securities, prior to taking any of the foregoing
actions, the Declaration Trustees shall receive an opinion of counsel
experienced in such matters to the effect that the Trust will not be classified
as other than a grantor trust for United States federal income tax purposes on
account of such action.
 
     Each Declaration may be amended from time to time by the holders of a
majority of the Common Securities and the Regular Trustees (and in certain
circumstances the Property Trustee and the Delaware Trustee), without the
consent of the holders of the Capital Securities:
 
        - to cure any ambiguity, correct or supplement any provisions in such
          Declaration that may be inconsistent with any other provision, or to
          make any other provisions with respect to matters or questions arising
          under such Declaration that shall not be inconsistent with the other
          provisions of such Declaration, or
 
        - to modify, eliminate, or add to any provisions of such Declaration to
          such extent as shall be necessary to ensure that the Trust will be
          classified as a grantor trust for United States federal income tax
          purposes at all times that any Capital Securities and Common
          Securities are outstanding or to ensure that the Trust will not be
          required to register as an "investment company" under the Investment
          Company Act, or
 
        - to conform to any change in Rule 3a-7 under the Investment Company Act
          or written change in interpretation or application of such Rule 3a-7
          by any legislative body, court, government agency, or regulatory
          authority which amendment does not have a material adverse effect on
          the rights, preferences, or privileges of the holders;
 
provided, however, that in any such case, such action shall not adversely affect
in any material respect the interests of any holder of Trust Securities, and any
such amendment of such Declaration shall become effective when notice of such
amendment is given to the holders of the Trust Securities.
 
     Each Declaration also may be amended by the holders of a majority in
aggregate liquidation amount of the Common Securities and the Regular Trustees
with:
 
        - the consent of holders representing not less than a majority (based
          upon liquidation amounts) of the outstanding Capital Securities and
 
        - receipt by the Regular Trustees of an opinion of counsel to the effect
          that such amendment or the exercise of any power granted to the
          Regular Trustees in accordance with such amendment will not affect the
          Trust's status as a grantor trust for United States federal income tax
          purposes or the Trust's exemption from status as an "investment
          company" under the Investment Company Act,
 
provided, that without the consent of each holder of Trust Securities affected
thereby, such Declaration may not be amended to:
 
        - change the amount or timing of any Distribution on the Trust
          Securities or otherwise adversely affect the amount of any
          Distribution required to be made in respect of the Trust Securities as
          of a specified date, or
 
                                       28
<PAGE>   63
 
        - restrict the right of a holder of Trust Securities to institute suit
          for the enforcement of any such payment on or after such date.
 
     Any required approval of holders of Capital Securities of a series may be
given at a meeting of holders of such Capital Securities convened for such
purpose or pursuant to written consent. The Regular Trustees will cause a notice
of any meeting at which holders of such Capital Securities 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 such Capital Securities in the
manner set forth in the applicable Declaration.
 
     No vote or consent of the holders of Capital Securities will be required
for a Trust to redeem and cancel its Capital Securities in accordance with the
applicable Declaration.
 
     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 the Corporation, the Declaration Trustees, or any
affiliate of the Corporation or any Declaration Trustees, shall, for purposes of
such vote or consent, be treated as if they were not outstanding.
 
EXPENSES AND TAXES
 
     In the Indenture, the Corporation, as borrower, has agreed to pay all debts
and other obligations (other than with respect to the Capital Securities) and
all costs and expenses of each Trust (including costs and expenses relating to
the organization of each Trust, the fees and expenses of all Declaration
Trustees, and the costs and expenses relating to the operation of each Trust)
and to pay any and all taxes and all costs and expenses with respect to each
Trust (other than United States withholding taxes) to which such Trusts might
become subject. The Corporation also has agreed in the Indenture to execute such
additional agreements as may be necessary or desirable to give full effect to
the foregoing.
 
NOTICES
 
     All notices to holders of Capital Securities of any series shall be validly
given if in writing and mailed by first class mail to them at their respective
addresses in the register of holders of Capital Securities maintained by the
registrar of each Trust. Any such notice shall be deemed to have been given on
the later of the date of such publication and the date that is the seventh day
after the notice is so mailed.
 
REGISTRAR AND TRANSFER AGENT
 
     Unless otherwise specified in the applicable Prospectus Supplement, The
Chase Manhattan Bank will act as the initial registrar and transfer agent for
all series of Capital Securities. The Corporation and each Trust shall at all
times maintain a transfer agent in the City of New York.
 
     Registration of transfers of Capital Securities will be effected without
charge by or on behalf of each Trust, but the applicable Trust may require
payment of any tax or other governmental charges that may be imposed in
connection with any transfer or exchange. No Trust will be required to (a)
register or cause to be registered the transfer or exchange of any Capital
Securities during a period beginning at the opening of business 15 days before
the day of the mailing of the relevant notice of redemption and ending at the
close of business on the day of mailing of such notice of redemption, or (b) to
register or cause to be registered the transfer or exchange of any Capital
Securities so selected for redemption, except in the case of any Capital
Securities being redeemed in part, any portion of such Capital Securities not to
be redeemed.
 
INFORMATION CONCERNING THE PROPERTY TRUSTEE
 
     The Property Trustee of each Trust, other than during the occurrence and
continuance of a Trust Enforcement Event, undertakes to perform only such duties
as are specifically set forth in each Declaration and, after such Trust
Enforcement Event, 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 Declaration at the request of any
holder of Capital Securities unless it is offered reasonable indemnity against
the costs, expenses, and liabilities that might
                                       29
<PAGE>   64
 
be incurred by such exercise. If no Trust Enforcement Event has occurred and is
continuing and the Property Trustee is required to decide between alternative
causes of action, construe ambiguous provisions in the applicable Declaration,
or is unsure of the application of any provision of such Declaration, and the
matter is not one on which holders of Capital Securities are entitled under such
Declaration to vote, then the Property Trustee shall take such action as is
directed by the Corporation 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.
 
PAYMENT AND PAYING AGENTS
 
     Payments in respect of the Capital Securities shall be made to the
Depository, which shall credit the relevant accounts at the Depository on the
applicable Distribution Dates or, if any Trust's Capital Securities are held in
certificated form, such payments shall be made by check mailed to the address of
the holder entitled to such payment as such address shall appear on the register
maintained by the registrar. 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 Regular Trustees and the Corporation. The Paying Agent shall
be permitted to resign as Paying Agent upon 60 days' written notice to the
Property Trustee and the Corporation. In the event that the Property Trustee
shall no longer be the Paying Agent, the Regular Trustees shall appoint a
successor (which shall be a bank or trust company acceptable to the Regular
Trustees and the Corporation) to act as Paying Agent.
 
REMOVAL OF DECLARATION TRUSTEES
 
     Unless an Indenture Event of Default shall have occurred and be continuing,
any Declaration Trustee may be removed at any time by the holder of the Common
Securities. If an Indenture Event of Default has occurred and is continuing, the
Property Trustee and the Delaware Trustee may be removed at such time and a
successor trustee appointed 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
Regular Trustees, which voting rights are vested exclusively in the Corporation
as the holder of the Common Securities. No resignation or removal of a
Declaration 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 Declaration.
 
MERGER OR CONSOLIDATION OF DECLARATION TRUSTEES
 
     Any corporation into which the Property Trustee, the Delaware Trustee, or
any Regular Trustee that is not a natural person may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion, or consolidation to which such Declaration Trustee shall be a party,
or any corporation succeeding to all or substantially all the corporate trust
business of such Declaration Trustee, shall be the successor of such Declaration
Trustee under each Declaration, provided such corporation shall be otherwise
qualified and eligible.
 
MERGERS, CONSOLIDATIONS, AMALGAMATIONS, OR REPLACEMENTS OF THE TRUST
 
     A Trust 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 entity, except as described below or as otherwise described in
the applicable Declaration.
 
     A Trust may, at the request of the Corporation without the consent of the
holders of the Capital Securities, merge with or into, consolidate, amalgamate,
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:
 
        - such successor entity (if not the Trust) either (1) expressly assumes
          all of the obligations of the Trust with respect to the Capital
          Securities or (2) substitutes for the Capital Securities other
          securities having substantially the same terms as the Capital
          Securities (the "Successor Securities") so long as
 
                                       30
<PAGE>   65
 
          the Successor Securities rank the same as the Capital Securities rank
          in priority with respect to distributions and payments upon
          liquidation, redemption, and otherwise,
 
        - if the Trust is not the successor entity, the Corporation expressly
          appoints a trustee of such successor entity possessing the same powers
          and duties as the Property Trustee as the holder of the Subordinated
          Debentures, such merger, consolidation, amalgamation, replacement,
          conveyance, transfer, or lease does not cause the Capital Securities
          (including any Successor Securities) to be downgraded by any
          nationally recognized statistical rating organization,
 
        - such merger, consolidation, amalgamation, replacement, conveyance,
          transfer, or lease does not adversely affect the rights, preferences,
          and privileges of the holders of the Capital Securities (including any
          Successor Securities) in any material respect,
 
        - such successor entity has a purpose substantially identical to that of
          the Trust,
 
        - prior to such merger, consolidation, amalgamation, replacement,
          conveyance, transfer, or lease, the Corporation has received an
          opinion from independent counsel to the Trust experienced in such
          matters to the effect that
 
         -- such merger, consolidation, amalgamation, replacement, conveyance,
            transfer, or lease does not adversely affect the rights,
            preferences, and privileges of the holders of the Capital Securities
            (including any Successor Securities) in any material respect, and
 
         -- following such merger, consolidation, amalgamation, replacement,
            conveyance, transfer, or lease, (A) neither the Trust nor such
            successor entity will be required to register as an investment
            company under the Investment Company Act and (B) the Trust or the
            successor entity will continue to be classified as a grantor trust
            for United States federal income tax purposes,
 
        - the Corporation 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, and
 
        - such successor entity (if not the Trust) expressly assumes all of the
          obligations of the Trust with respect to the Trustees.
 
     Notwithstanding the foregoing, the Trust shall not, except with the consent
of holders of 100% in aggregate liquidation amount of the Capital Securities,
consolidate, amalgamate, merge with or into, 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 Trust or the successor entity to
be classified as other than a grantor trust for United States federal income tax
purposes.
 
GOVERNING LAW
 
     The Declaration and the Capital Securities will be governed by, and
construed in accordance with, the laws of the State of Delaware, without regard
to principles of conflict of laws.
 
                                       31
<PAGE>   66
 
                         DESCRIPTION OF THE GUARANTEES
 
     A Guarantee will be executed and delivered by the Corporation concurrently
with the issuance by each Trust of its Capital Securities for the benefit of the
holders from time to time of such Capital Securities and Common Securities. The
Chase Manhattan Bank will act as trustee ("Guarantee Trustee") under each
Guarantee for purposes of compliance with the Trust Indenture Act and each
Guarantee 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, the Trust
Indenture Act and all of the provisions of each Guarantee, including the
definitions in the Guarantee of certain terms. The form of the Guarantee has
been filed as an exhibit to the Registration Statement. The Guarantee Trustee
will hold each Guarantee for the benefit of the holders of the related Trust's
Capital Securities and Common Securities.
 
GENERAL
 
     The Corporation will irrevocably and unconditionally agree to pay in full
on a subordinated basis, to the extent set forth in the Guarantee and described
in this Prospectus, 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 Trust 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 Trust (the
"Guarantee Payments"), will be subject to the Guarantee:
 
        - any accumulated and unpaid Distributions required to be paid on such
          Capital Securities, to the extent that such Trust has sufficient funds
          available for such payment at the time,
 
        - the Redemption Price with respect to any Capital Securities called for
          redemption, to the extent that such Trust has sufficient funds
          available for such payment at such time, or
 
        - upon a voluntary or involuntary dissolution, winding up, or
          liquidation of the Trust (unless the Corresponding Subordinated
          Debentures are distributed to holders of such Capital Securities in
          exchange therefor), the lesser of (1) the aggregate liquidation amount
          of the Capital Securities and all accrued and unpaid Distributions to
          the date of payment and (2) the amount of assets of the Trust
          remaining available for distribution to holders of Capital Securities
          after satisfaction of liabilities to creditors of such Trust as
          required by applicable law.
 
The Corporation's obligation to make a Guarantee Payment may be satisfied by
direct payment of the required amounts by the Corporation to the holders of the
applicable Trust Securities or by causing the Trust to pay such amounts to such
holders.
 
     Each Guarantee will be an irrevocable guarantee on a subordinated basis of
the related Trust's obligations under the Trust Securities, but will apply only
to the extent that such related Trust has sufficient funds available to make
such payments, and is not a guarantee of collection.
 
     If the Corporation does not make interest payments on the Corresponding
Subordinated Debentures held by the related Trust, the Trust will not be able to
pay Distributions on the Capital Securities and will not have funds legally
available for such payment. Each Guarantee will rank subordinate and junior in
right of payment to all Senior Indebtedness of the Corporation and will be pari
passu with all other Guarantees issued by the Corporation and the guarantee
issued by the Corporation in connection with the Outstanding Capital Securities
to the same extent as the Subordinated Debenture. See "-- Status of the
Guarantee" and "Description of the Subordinated Debentures -- Subordination."
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 the Corporation, whether under the Indenture or any existing or other
indenture that the Corporation may enter into in the future or otherwise.
 
     The Corporation has, through the applicable Guarantee, the applicable
Declaration, the applicable series of Corresponding Subordinated Debentures, and
the Indenture, taken together, fully and unconditionally guaranteed all of the
Trust'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
 
                                       32
<PAGE>   67
 
operation of these documents that has the effect of providing a full and
unconditional guarantee of the Trust's obligations under the Capital Securities.
See "Relationship Among the Capital Securities, the Corresponding Subordinated
Debentures, and the Guarantee."
 
STATUS OF THE GUARANTEE
 
     Each Guarantee will constitute an unsecured obligation of the Corporation
and will rank subordinate and junior in right of payment to all Senior
Indebtedness of the Corporation and will be pari passu with all other Guarantees
issued by the Corporation and the guarantee issued by the Corporation in
connection with the Outstanding Capital Securities to the same extent as the
Subordinated Debentures. The Guarantee does not place a limitation on the amount
of additional Senior Indebtedness that may be incurred by the Corporation. The
Corporation expects from time to time to incur additional indebtedness
constituting Senior Indebtedness.
 
     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 by the Guarantee Trustee for the benefit of the holders
of the related Trust Securities. Each Guarantee will not be discharged except by
payment of the Guarantee Payments in full to the extent not paid by the Trust or
upon distribution to the holders of Trust Securities of the Corresponding
Subordinated Debentures.
 
AMENDMENTS AND ASSIGNMENT
 
     Except with respect to any changes that do not materially adversely affect
the rights of holders of the related Trust 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 Trust Securities. The manner of obtaining any such approval will be
as set forth under "Description of the Capital Securities -- Voting Rights;
Amendment of Each Declaration." All guarantees and agreements contained in each
Guarantee shall bind the successors, assigns, receivers, trustees, and
representatives of the Corporation and shall inure to the benefit of the
registered holders of the related Trust Securities then outstanding.
 
EVENTS OF DEFAULT
 
     An event of default under each Guarantee will occur upon the failure of the
Corporation to perform any of its payment obligations under the Guarantee or to
perform any non-payment obligation if such non-payment default remains
unremedied for 30 days. The holders of not less than a majority in aggregate
liquidation amount of the related 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 such Guarantee or to direct the exercise of
any trust or power conferred upon the Guarantee Trustee under such Guarantee.
 
     Any holder of the Trust Securities may institute a legal proceeding
directly against the Corporation to enforce its rights under such Guarantee
without first instituting a legal proceeding against the Trust, the Guarantee
Trustee, or any other person or entity.
 
     The Corporation, as guarantor, is required to file annually with the
Guarantee Trustee a certificate as to whether or not the Corporation is in
compliance with all the conditions and covenants applicable to it under the
Guarantees.
 
INFORMATION CONCERNING THE GUARANTEE TRUSTEE
 
     The Guarantee Trustee, other than during the occurrence and continuance of
a default by the Corporation 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 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 Trust Securities unless it is offered reasonable
indemnity against the costs, expenses, and liabilities that might be incurred by
such exercise.
 
                                       33
<PAGE>   68
 
TERMINATION OF THE GUARANTEE
 
     Each Guarantee will terminate and be of no further force and effect upon
full payment of the Redemption Price of all of the related Trust Securities,
upon full payment of the amounts payable upon liquidation of the related Trust,
or upon distribution of Corresponding Subordinated Debentures to the holders of
the related Trust Securities in exchange for all of such Trust 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 Trust Securities must restore
payment of any sums paid under such Trust 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.
 
                   RELATIONSHIP AMONG THE CAPITAL SECURITIES,
         THE CORRESPONDING SUBORDINATED DEBENTURES, AND THE GUARANTEES
 
FULL AND UNCONDITIONAL GUARANTEE
 
     Payments of Distributions and other amounts due on the Capital Securities
(to the extent the related Trust has funds available for the payment of such
Distributions and other amounts) are irrevocably guaranteed by the Corporation
as and to the extent set forth under "Description of the Guarantees." If and to
the extent that the Corporation does not make payments on any series of
Corresponding Subordinated Debentures, such Trust will not pay Distributions or
other amounts due on the Related Capital Securities. The Guarantees do not cover
payment of Distributions when the related Trust does not have sufficient funds
to pay such Distributions. In such event, a holder of a series of Capital
Securities may institute a legal proceeding directly against the Corporation
under the Indenture to enforce payment of such Distributions to such holder
after the respective due dates.
 
     Taken together, the Corporation's obligations under each series of
Corresponding Subordinated Debentures, the Indenture, the related Declaration,
and the related Guarantee provide, in the aggregate, a full and unconditional
guarantee of payments of Distributions and other amounts due on the Related
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 and unconditional guarantee of the Trust's
obligations under the Related Capital Securities.
 
     The obligations of the Corporation under each Guarantee and the
Corresponding Subordinated Debentures will be subordinate and junior in right of
payment to all Senior Indebtedness of the Corporation and will be pari passu
with each other Guarantee and series of Subordinated Debentures and with the
$200 million of obligations of the Corporation associated with the Outstanding
Capital Securities.
 
SUFFICIENCY OF PAYMENTS
 
     As long as payments of interest and other payments are made when due on
each series of Corresponding Subordinated Debentures, such payments will be
sufficient to cover Distributions and other payments due on the Related Capital
Securities, primarily because:
 
        - the aggregate principal amount of each series of Corresponding
          Subordinated Debentures will be equal to the sum of the aggregate
          stated liquidation amount of the Related Capital Securities and the
          related Common Securities;
 
        - the interest rate and interest and other payment dates on each series
          of Corresponding Subordinated Debentures will match the Distribution
          rate and Distribution and other payment dates for the Related Capital
          Securities;
 
        - the Corporation will pay for all and any costs, expenses, and
          liabilities of such Trust except the Trust's obligations under its
          Capital Securities; and
 
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<PAGE>   69
 
        - each Declaration further provides that the Trust will not engage in
          any activity that is not consistent with the limited purposes of such
          Trust.
 
     Notwithstanding anything to the contrary in the Indenture, the Corporation
has the right to set-off any payment it is otherwise required to make under the
Indenture with, and to the extent the Corporation has theretofore made or is
concurrently on the date of such payment making, a related 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 the Corporation to enforce its rights under the related
Guarantee without first instituting a legal proceeding against the Guarantee
Trustee, the related Trust, or any other person or entity.
 
     A default or event of default under any Senior Indebtedness of the
Corporation will not constitute an Indenture Event of Default. However, in the
event of payment defaults under, or acceleration of, Senior Indebtedness of the
Corporation, the subordination provisions of the Indenture provide that, except
as otherwise specified in the Indenture, no payments may be made in respect of
the Corresponding Subordinated Debentures until such Senior Indebtedness has
been paid in full or any payment default has been cured or waived. Failure to
make required payments on the Corresponding Subordinated Debentures would
constitute an Indenture Event of Default.
 
LIMITED PURPOSE OF TRUSTS
 
     Each Trust's Capital Securities evidence an undivided beneficial ownership
interest in the assets of such Trust, and each Trust exists for the sole purpose
of issuing its Capital Securities and Common Securities and investing the
proceeds from the sale of such Trust Securities in Corresponding Subordinated
Debentures. A principal difference between the rights of a holder of Capital
Securities and a holder of Corresponding Subordinated Debentures is that a
holder of Corresponding Subordinated Debentures is entitled to receive from the
Corporation the principal amount of and interest accrued on Corresponding
Subordinated Debentures held, while a holder of Capital Securities is entitled
to receive Distributions from such Trust (or from the Corporation under the
applicable Guarantee) if and to the extent such Trust has funds available for
the payment of such Distributions.
 
RIGHTS UPON DISSOLUTION
 
     Upon any voluntary or involuntary dissolution, winding-up, or liquidation
of any Trust involving the liquidation of the Corresponding Subordinated
Debentures, after satisfaction of liabilities to creditors of the Trust as
required by applicable law, the holders of the Related Capital Securities will
be entitled to receive, out of assets held by such Trust, the Liquidation
Distribution in cash. See "Description of the Capital Securities -- Liquidation
Distribution Upon Dissolution." Upon any voluntary or involuntary liquidation or
bankruptcy of the Corporation, the Property Trustee, as holder of the
Corresponding Subordinated Debentures, would be a subordinated creditor of the
Corporation, subordinated in right of payment to all Senior Indebtedness to the
extent set forth in the Indenture, but entitled to receive payment in full of
principal and interest before any stockholders of the Corporation receive
payments or distributions.
 
     Since the Corporation is the guarantor under each Guarantee and has agreed
to pay for all costs, expenses, and liabilities of each Trust (other than the
Trust's obligations to the holders of its Capital Securities), the positions of
a holder of such Capital Securities and a holder of such Corresponding
Subordinated Debentures relative to other creditors and to stockholders of the
Corporation in the event of liquidation or bankruptcy of the Corporation are
expected to be substantially the same.
 
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<PAGE>   70
 
                              BOOK-ENTRY ISSUANCE
 
     The Depository Trust Company, New York, New York (the "Depository"), will
act as securities depositary for all of the Capital Securities and the
Subordinated Debentures, unless otherwise specified in the Prospectus Supplement
relating to an offering of Capital Securities or Subordinated Debentures. The
Capital Securities and the Subordinated Debentures will be issued only as
fully-registered securities (in either temporary or permanent form) registered
in the name of the Depository or its nominee. One or more fully-registered
global certificates will be issued for the Capital Securities of each Trust and
the Subordinated Debentures, representing in the aggregate the total number of
such Trust's Capital Securities or aggregate principal balance of Subordinated
Debentures, respectively, and will be deposited with the Depository or the
Property Trustee, as custodian for the Depository. Unless and until it is
exchanged in whole or in part for individual certificates for Capital Securities
or Subordinated Debentures, a global certificate for such securities may not be
transferred except as a whole:
 
        - by the Depository to a nominee of the Depository,
 
        - by a nominee of the Depository to such Depository or another nominee
          of the Depository, or
 
        - by the Depository or any nominee to a successor depositary or any
          nominee of such successor.
 
     The Depository has advised the Trusts and the Corporation that the
Depository is a limited-purpose trust company organized under the laws of the
State of New York, a member of the Federal Reserve System, a "clearing
corporation" within the meaning of the Uniform Commercial Code, and a "clearing
agency" registered pursuant to the provisions of Section 17A of the Exchange
Act. The Depository holds securities for its participating organizations
(collectively, the "Participants") and facilitates the clearance and settlement
of transactions in those securities between Participants through electronic
book-entry changes in accounts of its Participants, thereby eliminating the need
for physical movement of certificates. The Participants include securities
brokers and dealers, banks, trust companies, clearing corporations, and certain
other organizations. Access to the Depository's system also is available to
other entities such as banks, brokers, dealers, and trust companies that clear
through or maintain a custodial relationship with a Participant, either directly
or indirectly (collectively, the "Indirect Participants").
 
     Purchases of Capital Securities or Subordinated Debentures within the
Depository's system must be made by or through Participants, which will receive
a credit for the Capital Securities or Subordinated Debentures on the
Depository's records. The ownership interest of the actual purchaser of each
Capital Security and each Subordinated Debenture ("Beneficial Owner") will in
turn be recorded on the Participants' and Indirect Participants' records. The
Depository will have no knowledge of the actual Beneficial Owners of the Capital
Securities or Subordinated Debentures. The Depository's records will reflect
only the identity of the Participants to whose accounts such Capital Securities
or Subordinated Debentures are credited, which may or may not be the Beneficial
Owners. The Participants and Indirect Participants will remain responsible for
keeping account of their holdings on behalf of their customers. Beneficial
Owners will not receive written confirmation from the Depository 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 Participants or Indirect Participants through which the
Beneficial Owners purchased Capital Securities or Subordinated Debentures.
 
     Transfers of ownership interests in the Capital Securities or Subordinated
Debentures will 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
Subordinated Debentures, except in the event that use of the book-entry system
for the Capital Securities of such Trust or Subordinated Debentures is
discontinued (see below).
 
     The laws of some states require that certain persons take physical delivery
in certificated form of securities that they own. Consequently, the ability to
transfer beneficial interests in a Capital Security or Subordinated Debenture to
such persons will be limited to that extent. Because the Depository can act only
on behalf of Participants, which in turn act on behalf of Indirect Participants
and certain banks, the ability of a person having beneficial interests in a
Capital Security or Subordinated Debenture to pledge such interests to persons
or entities that do not participate in the Depository's system, or otherwise
take actions in respect of such interests, may be affected by the lack of a
physical certificate evidencing such interests.
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<PAGE>   71
 
     Redemption notices will be sent the Depository or its nominee as the
registered holder of the Capital Securities or Subordinated Debentures. If less
than all of a Trust's Capital Securities or the Subordinated Debentures are to
be redeemed, the Depository's practice is to determine by lot the amount of the
interest of each Direct Participant to be redeemed.
 
     Distribution payments on the Capital Securities or interest payments on
Subordinated Debentures (unless they are Corresponding Subordinated Debentures)
will be made by the relevant Trustee or the Corporation, respectively, to the
Depository or its nominee, as the record holder of such securities. The relevant
Trustee and the Corporation will treat the Depository or its nominee as the sole
owner of such securities for the purpose of receiving such payments and for any
and all other purposes whatsoever. Consequently, none of the Corporation, any
Declaration Trustees, any Paying Agent or securities registrar, nor any other
agent of the Declaration Trustees has or will have any responsibility or
liability for (a) any aspect of the Depository's records or any Participant's or
Indirect Participant's records relating to or payments made on account of
beneficial ownership interests in the Capital Securities or the Subordinated
Debentures, or for maintaining, supervising, or reviewing any of the
Depository's records or any Participant's or Indirect Participant's records
relating to such beneficial ownership interests, or (b) any other matter
relating to the actions and practices of the Depository or any of its
Participants or Indirect Participants.
 
     The Depository has advised the Trusts and the Corporation that its current
practice, upon receipt of any payment in respect of securities such as the
Capital Securities and the Subordinated Debentures, is to credit the accounts of
the relevant Participants with the payment on the relevant payment date in
accordance with their respective holdings shown on the Depository's records
unless the Depository has reason to believe it will not receive payment on such
payment date. Payments by the Participants and the Indirect Participants to
Beneficial Owners will be governed by standing instructions and customary
practices and will be the responsibility of the Participants or the Indirect
Participants and will not be the responsibility of the Depository, the relevant
Trustees, the relevant Trust, or the Corporation. None of the Corporation, the
relevant Trust, or the relevant Trustee will be liable for any delay by the
Depository or any of its Participants in identifying the Beneficial Owners. The
Corporation, the relevant Trust, and the relevant Trustees may conclusively rely
on and will be protected in relying on instructions from the Depository or its
nominee for all purposes.
 
     Interests in the Capital Securities and Subordinated Debentures will trade
in the Depository's Same-Day Funds Settlement System and secondary market
trading activity in such interests will therefore settle in immediately
available funds, subject in all cases to the rules and procedures of the
Depository and its Participants. Transfers between Participants in the
Depository will be effected in accordance with the Depository's procedures, and
will be settled in same-day funds.
 
     Although voting with respect to the Capital Securities or the Subordinated
Debentures is limited to the holders of record of the Capital Securities or
Subordinated Debentures, in those instances in which a vote is required, neither
the Depository nor its nominee will itself consent or vote with respect to
Capital Securities or Subordinated Debentures. Under its usual procedures, the
Depository would mail an omnibus proxy to the relevant Trustee as soon as
possible after the record date assigning all consenting or voting rights to
those Direct Participants to whose accounts such Capital Securities or
Subordinated Debentures are credited on the record date.
 
     The Depository may discontinue providing its services as securities
depositary with respect to any of the Capital Securities or the Subordinated
Debentures at any time by giving reasonable notice to the relevant Trustee and
the Corporation. In the event that a successor securities depositary is not
obtained, definitive Capital Security or Subordinated Debenture certificates
representing such Capital Securities or Subordinated Debentures are required to
be printed and delivered. The Corporation, at its option, may decide to
discontinue use of the system of book-entry transfers through the Depository (or
a successor depositary). After an Event of Default or any event which after
notice or lapse of time or both would be an Event of Default under the relevant
Declaration, the holders of a majority in liquidation amount of Capital
Securities or aggregate principal amount of Subordinated Debentures may
determine to discontinue the system of book-entry transfers through the
Depository. In any such event, definitive certificates for such Capital
Securities or Subordinated Debentures will be printed and delivered.
 
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<PAGE>   72
 
     The information in this section concerning the Depository and its
book-entry system has been obtained from sources that the Trusts and the
Corporation believe to be reliable, but the Trusts and the Corporation assume no
responsibility for the accuracy of such information. None of the Trustees, the
Trusts, nor the Corporation has any responsibility for the performance by the
Depository or its Participants of their respective obligations as described
above or under the rules and procedures governing their respective operations.
 
                              PLAN OF DISTRIBUTION
 
     The Subordinated Debentures or the Capital Securities may be sold in a
public offering to or through underwriters or dealers designated from time to
time. The Corporation and each Trust may sell its Subordinated Debentures or
Capital Securities as soon as practicable after effectiveness of the
Registration Statement of which this Prospectus forms a part. The names of any
underwriters or dealers involved in the sale of the Subordinated Debentures or
Capital Securities in respect of which this Prospectus is delivered, the amount
or number of Subordinated Debentures and Capital Securities to be purchased by
any such underwriters, and any applicable commissions or discounts will be set
forth in the applicable Prospectus Supplement.
 
     Underwriters may offer and sell 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 the Corporation and/or the applicable Trust in the form of underwriting
discounts or commissions and also may receive commissions. Underwriters may sell
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 the Corporation and/or the applicable
Trust to underwriters in connection with the offering of Subordinated Debentures
or Capital Securities, and any discounts, concessions, or commissions allowed by
such underwriters to participating dealers, will be described in an accompanying
Prospectus Supplement. Underwriters and dealers participating in the
distribution of 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 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 the
Corporation and the applicable Trust, to indemnification against and
contribution toward certain civil liabilities, including liabilities under the
Securities Act, and to reimbursement by the Corporation for certain expenses.
 
     The underwriters and any selling group members and their respective
affiliates may engage in transactions effected in accordance with Rule 104 of
the Securities and Exchange Commission's Regulation M that are intended to
stabilize, maintain, or otherwise affect the market price of the Capital
Securities. Such transactions may include over-allotment transactions in which
an underwriter creates a short position in its own account by selling more
Capital Securities or Subordinated Debentures than it is committed to purchase
from a Trust. In such a case, to cover all or part of the short position, such
underwriter may purchase Capital Securities of the same series or Subordinated
Debentures in the open market following completion of the initial offering of
such Capital Securities or Subordinated Debentures. The underwriters also may
engage in stabilizing transactions in which they bid for, and purchase, Capital
Securities or Subordinated Debentures at a level above that which might
otherwise prevail in the open market for the purpose of preventing or retarding
a decline in the market price of such Capital Securities or Subordinated
Debentures. The underwriters also may reclaim any selling concessions allowed to
a dealer if an underwriter repurchases shares distributed by that dealer. Any of
the foregoing transactions may result in the maintenance of a price for the
Capital Securities of a series or Subordinated Debentures at a level above that
which might otherwise prevail in the open market. Neither the Corporation nor
any underwriters can make 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 Capital Securities or Subordinated Debentures. The underwriters are
not required to engage in any of the foregoing transactions and, if commenced,
such transactions may be discontinued at any time without notice.
 
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<PAGE>   73
 
     Underwriters and dealers or their affiliates may engage in transactions
with, or perform investment or commercial banking services for, the Corporation
and/or the applicable Trust and/or any of their affiliates in the ordinary
course of business. Such underwriters and dealers or their affiliates may
receive customary fees and commissions in connection with these transactions.
 
     The Subordinated Debentures and the Capital Securities will be new issues
of securities and will have no established trading market. Any underwriters to
whom Subordinated Debentures or Capital Securities are sold for public offering
and sale may make a market in such 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 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 Subordinated
Debentures or Capital Securities.
 
                             VALIDITY OF SECURITIES
 
     Unless otherwise indicated in the applicable Prospectus Supplement, certain
matters of Delaware law relating to the validity of the Capital Securities, the
enforceability of the Declarations, and the creation of the Trusts will be
passed upon on behalf of the Corporation and the Trusts by Richards, Layton &
Finger P.A., special Delaware counsel to the Corporation and the Trusts. Unless
otherwise indicated in the applicable Prospectus Supplement, the validity of the
Subordinated Debentures and the Guarantees will be passed upon for the
Corporation and the Trusts by Porter, Wright, Morris & Arthur and for the
Underwriters by Sullivan & Cromwell. Porter, Wright, Morris & Arthur will rely
as to certain matters of Delaware law on the opinion of Richards, Layton &
Finger, P.A. Sullivan & Cromwell will rely as to certain matters of Maryland law
on the opinion of Porter, Wright, Morris & Arthur. Sullivan & Cromwell from time
to time performs legal services for the Corporation.
 
                                    EXPERTS
 
     The consolidated financial statements of the Corporation incorporated by
reference in the Corporation's Annual Report on Form 10-K for the year ended
December 31, 1997, incorporated by reference herein have been audited by Ernst &
Young LLP, independent auditors, as set forth in their report included therein
and incorporated herein by reference, which, as to the years 1996 and 1995, is
based in part on the reports of BDO Seidman, LLP, independent auditors. Such
financial statements audited by Ernst & Young LLP are incorporated by reference
herein in reliance upon such report given upon the authority of such firm as
experts in accounting and auditing.
 
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