INTERNATIONAL BUSINESS MACHINES CORP
424B5, 1997-12-15
COMPUTER & OFFICE EQUIPMENT
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<PAGE>
                                                Filed Pursuant to Rule 424(b)(5)
                                                      Registration No. 333-40669
          PROSPECTUS SUPPLEMENT TO PROSPECTUS DATED DECEMBER 10, 1997
                                 $4,300,000,000
                  International Business Machines Corporation
                               Medium-Term Notes
                    DUE ONE YEAR OR MORE FROM DATE OF ISSUE
                            ------------------------
  INTERNATIONAL BUSINESS MACHINES CORPORATION (THE "COMPANY") MAY FROM TIME TO
 TIME OFFER MEDIUM-TERM NOTES (THE "NOTES"), WITH AN AGGREGATE INITIAL PUBLIC
   OFFERING PRICE OR PURCHASE PRICE OF UP TO $4,300,000,000 OR THE EQUIVALENT
  THEREOF IF ANY NOTES ARE DENOMINATED IN CURRENCIES OR CURRENCY UNITS OTHER
    THAN U.S. DOLLARS, SUBJECT TO REDUCTION AS A RESULT OF THE SALE OF OTHER
    SECURITIES (AS DEFINED IN THE PROSPECTUS). EACH NOTE WILL BEAR INTEREST
       AT A FIXED OR FLOATING RATE AS INDICATED IN THE APPLICABLE PRICING
        SUPPLEMENT (THE "PRICING SUPPLEMENT") TO BE DELIVERED WITH THIS
      PROSPECTUS SUPPLEMENT TO THE PURCHASER OF SUCH NOTE. EACH NOTE WILL
        MATURE FROM ONE YEAR OR MORE FROM ITS DATE OF ISSUE AND MAY BE
       SUBJECT TO REDEMPTION OR REPAYMENT PRIOR TO MATURITY, AS SET FORTH
      IN THE APPLICABLE PRICING SUPPLEMENT. EACH FIXED RATE NOTE WILL PAY
       INTEREST ON APRIL 1 AND OCTOBER 1 OF EACH YEAR, UNLESS OTHERWISE
            SPECIFIED IN THE APPLICABLE PRICING SUPPLEMENT, AND EACH
         FLOATING RATE NOTE WILL PAY INTEREST ON THE DATES SPECIFIED IN
                       THE APPLICABLE PRICING SUPPLEMENT.
 
THE NOTES WILL BE ISSUED IN FULLY REGISTERED FORM, WITHOUT COUPONS, AND WILL BE
     REPRESENTED BY EITHER A GLOBAL SECURITY REGISTERED IN THE NAME OF THE
      DEPOSITORY TRUST COMPANY, AS DEPOSITARY (A "BOOK-ENTRY NOTE"), OR A
    CERTIFICATE ISSUED IN DEFINITIVE FORM, AS SET FORTH IN THE APPLICABLE
   PRICING SUPPLEMENT. BENEFICIAL INTERESTS IN BOOK-ENTRY NOTES WILL BE SHOWN
     ON, AND THE TRANSFER OF THAT OWNERSHIP WILL BE EFFECTED ONLY THROUGH,
    RECORDS MAINTAINED BY THE DEPOSITARY (WITH RESPECT TO ITS PARTICIPANTS'
    INTERESTS) AND ITS PARTICIPANTS. EXCEPT AS DESCRIBED IN "DESCRIPTION OF
     THE NOTES--BOOK-ENTRY NOTES," OWNERS OF BENEFICIAL INTERESTS IN GLOBAL
      SECURITIES WILL NOT BE ENTITLED TO RECEIVE NOTES IN DEFINITIVE FORM
             AND WILL NOT BE CONSIDERED TO BE THE HOLDERS THEREOF.
 
  EACH NOTE MAY BE DENOMINATED OR PAYABLE IN U.S. DOLLARS, A FOREIGN CURRENCY,
FOREIGN CURRENCIES, EUROPEAN CURRENCY UNITS ("ECU") OR ANOTHER CURRENCY UNIT OR
     CURRENCY UNITS, AS SPECIFIED IN THE APPLICABLE PRICING SUPPLEMENT (THE
 "SPECIFIED CURRENCY"). UNLESS OTHERWISE INDICATED IN THE APPLICABLE PRICING
    SUPPLEMENT, NOTES DENOMINATED IN U.S. DOLLARS WILL BE ISSUED IN MINIMUM
    DENOMINATIONS OF $1,000 AND INTEGRAL MULTIPLES THEREOF. THE AUTHORIZED
    DENOMINATIONS OF NOTES NOT DENOMINATED IN U.S. DOLLARS WILL BE SET FORTH
    IN THE APPLICABLE PRICING SUPPLEMENT. SEE "DESCRIPTION OF THE NOTES" IN
      THIS PROSPECTUS SUPPLEMENT AND "DESCRIPTION OF THE DEBT SECURITIES"
                               IN THE PROSPECTUS.
                         ------------------------------
 
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, ANY PRICING SUPPLEMENT OR THE ACCOMPANYING
            PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                          PRICE TO                                                   PROCEEDS TO
                                         PUBLIC(1)          AGENTS' COMMISSIONS(2)                  COMPANY(2)(3)
                                     ------------------  -----------------------------  --------------------------------------
<S>                                  <C>                 <C>                            <C>
PER NOTE...........................         100%                  .150%-.750%                      99.250%-99.850%
TOTAL(4)...........................  $    4,300,000,000  $       6,450,000-$32,250,000  $         4,267,750,000-$4,293,550,000
</TABLE>
 
- ------------------------------
(1) UNLESS OTHERWISE SPECIFIED IN A PRICING SUPPLEMENT, THE PRICE TO THE PUBLIC
    OF EACH NOTE WILL BE 100% OF ITS PRINCIPAL AMOUNT.
(2) THE COMPANY WILL PAY TO CREDIT SUISSE FIRST BOSTON CORPORATION, GOLDMAN,
    SACHS & CO., MERRILL LYNCH & CO., MERRILL LYNCH, PIERCE, FENNER & SMITH
    INCORPORATED, MORGAN STANLEY & CO. INCORPORATED AND SALOMON BROTHERS INC
    (EACH AN "AGENT") A COMMISSION RANGING FROM .150% TO .750% OF THE PRINCIPAL
    AMOUNT OF ANY NOTE, DEPENDING UPON MATURITY, SOLD THROUGH SUCH AGENT.
    COMMISSION ON ANY NOTE WITH A MATURITY MORE THAN 30 YEARS WILL BE NEGOTIATED
    AT THE TIME OF SALE. THE COMPANY MAY ALSO SELL NOTES TO ANY AGENT, AS
    PRINCIPAL, AT A DISCOUNT. THE COMPANY WILL INDEMNIFY THE AGENTS AGAINST
    CERTAIN LIABILITIES, INCLUDING LIABILITIES UNDER THE SECURITIES ACT OF 1933.
    THE COMPANY MAY REPLACE THE AGENTS OR APPOINT ADDITIONAL AGENTS FROM TIME TO
    TIME.
(3) ASSUMING NOTES ARE ISSUED AT 100% OF PRINCIPAL AMOUNT AND BEFORE DEDUCTING
    EXPENSES PAYABLE BY THE COMPANY ESTIMATED AT $1,000,000.
(4) IN U.S. DOLLARS OR, FOR NOTES DENOMINATED IN FOREIGN CURRENCIES OR CURRENCY
    UNITS, THE EQUIVALENT THEREOF BASED ON THE PREVAILING EXCHANGE RATES AT THE
    RESPECTIVE TIMES SUCH NOTES ARE FIRST OFFERED.
                         ------------------------------
 
    THE NOTES ARE BEING OFFERED ON A CONTINUING BASIS BY THE COMPANY THROUGH THE
AGENTS, WHO WILL AGREE TO USE THEIR REASONABLE EFFORTS TO SOLICIT PURCHASES OF
THE NOTES. THE INITIAL PURCHASER MAY PROPOSE CERTAIN TERMS OF THE NOTES,
INCLUDING THE MATURITY, INTEREST RATE OR INTEREST RATE FORMULA AND PRINCIPAL
AMOUNT AND TERMS, IF ANY, OF REDEMPTION, BUT THE COMPANY WILL HAVE THE SOLE
RIGHT TO ACCEPT ANY OFFERS TO PURCHASE NOTES. PAYMENT OF THE PURCHASE PRICE OF
NOTES WILL BE REQUIRED TO BE MADE IN FUNDS IMMEDIATELY AVAILABLE IN THE CITY OF
NEW YORK. THE NOTES MAY BE SOLD AT A DISCOUNT TO ANY AGENT, AS PRINCIPAL, FOR
RESALE TO ONE OR MORE INVESTORS AT VARYING PRICES RELATED TO PREVAILING MARKET
PRICES AT THE TIME OF RESALE, OR, IF SET FORTH IN THE APPLICABLE PRICING
SUPPLEMENT, AT A FIXED PUBLIC OFFERING PRICE, AS DETERMINED BY SUCH AGENT, OR
SOLD DIRECTLY TO PURCHASERS BY THE COMPANY ON ITS OWN BEHALF IN THOSE
JURISDICTIONS WHERE IT IS AUTHORIZED TO DO SO. UNLESS OTHERWISE INDICATED IN THE
APPLICABLE PRICING SUPPLEMENT, THE NOTES WILL NOT BE LISTED ON ANY SECURITIES
EXCHANGE, AND THERE CAN BE NO ASSURANCE THAT THERE WILL BE A SECONDARY MARKET
FOR THE NOTES. THE COMPANY RESERVES THE RIGHT TO WITHDRAW, CANCEL OR MODIFY THE
OFFER OR SOLICITATION OF OFFERS MADE HEREBY WITHOUT NOTICE. THE COMPANY OR ANY
AGENT, IF IT SOLICITS SUCH OFFER, MAY REJECT ANY OFFER TO PURCHASE NOTES IN
WHOLE OR IN PART. SEE "PLAN OF DISTRIBUTION."
 
Credit Suisse First Boston
 
               Goldman, Sachs & Co.
 
                              Merrill Lynch & Co.
 
                                            Morgan Stanley Dean Witter
 
                                                         Salomon Smith Barney
 
          THE DATE OF THIS PROSPECTUS SUPPLEMENT IS DECEMBER 12, 1997
<PAGE>
    CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN
TRANSACTIONS THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE
NOTES. SPECIFICALLY, THE AGENTS MAY OVERALLOT IN CONNECTION WITH ANY OFFERING OF
THE NOTES, AND MAY BID FOR, AND PURCHASE, THE NOTES IN THE OPEN MARKET. FOR A
DESCRIPTION OF THESE ACTIVITIES, SEE "PLAN OF DISTRIBUTION."
 
                            DESCRIPTION OF THE NOTES
 
    THE FOLLOWING DESCRIPTION OF THE PARTICULAR TERMS OF THE NOTES OFFERED
HEREBY SUPPLEMENTS, AND TO THE EXTENT INCONSISTENT THEREWITH REPLACES, THE
DESCRIPTION OF THE GENERAL TERMS AND PROVISIONS OF THE DEBT SECURITIES SET FORTH
IN THE PROSPECTUS, TO WHICH DESCRIPTION REFERENCE IS HEREBY MADE. CAPITALIZED
DEBT TERMS NOT DEFINED HEREIN HAVE THE MEANINGS ASSIGNED TO SUCH TERMS IN THE
PROSPECTUS OR THE SENIOR INDENTURE. THE PROVISIONS OF THE NOTES SUMMARIZED
HEREIN WILL APPLY TO EACH NOTE UNLESS OTHERWISE INDICATED IN THE APPLICABLE
PRICING SUPPLEMENT.
 
GENERAL
 
    Each issue of the Notes will constitute a separate series of Senior Debt
Securities described in the accompanying Prospectus. Each Fixed Rate Note will
mature on a Business Day, and each Floating Rate Note will mature on a Business
Day that is also an Interest Payment Date, that is one year or more from its
date of issue. The initial purchaser may propose certain terms of the Notes,
including the maturity, interest rate or interest rate formula and principal
amount and terms, if any, of redemption, but the Company will have the sole
right to accept any offers to purchase Notes and may reject any proposed
purchase of Notes in whole or in part. The Notes will be issued as Registered
Securities, without coupons.
 
    Each Note may be denominated or payable in U.S. dollars or in a foreign
currency, foreign currencies, a currency unit or currency units, or in any other
unit as specified in the applicable Pricing Supplement. Unless otherwise
specified in the applicable Pricing Supplement, Notes denominated in U.S.
dollars will be issued in minimum denominations of $1,000 and integral multiples
thereof. If specified in the applicable Pricing Supplement, the amount of
payments of principal or interest on a series of Notes may be determined by
reference to an index based on one or more currencies or currency units or to
other indices. Unless otherwise indicated in the applicable Pricing Supplement,
currency amounts in this Prospectus Supplement, the accompanying Prospectus and
any Pricing Supplement are stated in United States dollars ("$", "U.S. $",
"dollars" or "U.S. dollars").
 
    Each Note will be issued initially as either a Book-Entry Note or as Notes
issued in definitive form. Currently, only the Notes that are denominated and
payable in U.S. dollars may be issued as Book-Entry Notes. See "Book-Entry
Notes."
 
    The U.S. dollar equivalent of the public offering price or purchase price of
a Note having a Specified Currency other than U.S. dollars will be determined on
the basis of the noon buying rate in New York City for cable transfers in
foreign currencies as certified for customs purposes by the Federal Reserve Bank
of New York (the "Market Exchange Rate") for such Specified Currency on the
applicable issue date. Such determination will be made by the Company or its
agent, as exchange rate agent for the Notes (the "Exchange Rate Agent").
 
    Unless otherwise specified in the applicable Pricing Supplement, "Business
Day" as used in this Prospectus Supplement and the Prospectus means each day on
which commercial banks and foreign exchange markets settle payments in the Place
of Payment referred to below and also, with respect to any LIBOR Note (as
defined below), is a day on which dealings in deposits in U.S. dollars are
transacted in the London interbank market (a "London Banking Day").
 
                                      S-2
<PAGE>
PAYMENT OF PRINCIPAL AND INTEREST PAYABLE IN A SPECIFIED CURRENCY OTHER THAN
  U.S. DOLLARS
 
    The principal of and any premium and interest on each Note are payable by
the Company in the Specified Currency for such Note. If the Specified Currency
for a Note is other than U.S. dollars, the Company will (unless otherwise
specified in the applicable Pricing Supplement) arrange to convert all payments
in respect of such Note into U.S. dollars in the manner described in the
following paragraph. The holder of a Note having a Specified Currency other than
U.S. dollars may (if the applicable Pricing Supplement and such Note so
indicate) elect to receive all payments in respect of such Note in the Specified
Currency by delivery of a written notice to the Trustee for such Note not later
than fifteen calendar days prior to the applicable payment date, except under
the circumstances described under "Currency Risks--Payment Currency" below. Such
election will remain in effect until revoked by written notice to such Trustee
received not later than fifteen calendar days prior to the applicable payment
date.
 
    In the case of a Note having a Specified Currency other than U.S. dollars,
the amount of any U.S. dollar payment in respect of such Note will be determined
by the Exchange Rate Agent based on the highest firm bid quotation expressed in
U.S. dollars received by the Exchange Rate Agent at approximately 11:00 a.m.,
New York City time, on the second Business Day preceding the applicable payment
date (or, if no such rate is quoted on such date, the last date on which such
rate was quoted), from three (or, if three are not available, then two)
recognized foreign exchange dealers in The City of New York (one of which may be
the Agent and another of which may be the Exchange Rate Agent) selected by the
Exchange Rate Agent, for the purchase by the quoting dealer, for settlement on
such payment date, of the aggregate amount of such Specified Currency payable on
such payment date in respect of all Notes denominated in such Specified
Currency. All currency exchange costs will be borne by the registered holders of
such Notes by deductions from such payments. If no such bid quotations are
available, such payments will be made in such Specified Currency, unless such
Specified Currency is unavailable due to the imposition of exchange controls or
to other circumstances beyond the Company's control, in which case such payments
will be made as described under "Currency Risks--Payment Currency" below.
 
PAYMENTS AT MATURITY
 
    Payments of principal and interest at maturity and upon redemption will be
made in immediately available funds at the office of the Company's paying agent
at the Special Issues Processing Department of The Chase Manhattan Bank,
Corporate Trust Securities Window, 55 Water Street, Room 234, North Building,
New York, NY 10041 or such other office as shall be specified in the applicable
Pricing Supplement (the "Place of Payment"), provided that the Note is presented
at the Place of Payment in sufficient time for it to make such payment in
accordance with its usual procedures. The Notes may also be presented at such
office for registration of transfer and exchange.
 
INTEREST RATES AND PAYMENTS
 
    Each Note will bear interest from the later of (i) the original issue date
specified on the face of such Note and (ii) the most recent Interest Payment
Date to which interest has been paid occurring on or before the date of
authentication of such Note. Notes will bear interest at either (a) a fixed rate
indicated in the Pricing Supplement, in the case of a Fixed Rate Note, (b) a
rate calculated pursuant to an interest rate formula set forth in the Pricing
Supplement, in the case of a Floating Rate Note, or (c) in such other manner
specified in the applicable Pricing Supplement.
 
FIXED RATE NOTES
 
    Unless otherwise indicated in the applicable Pricing Supplement, the
Interest Payment Dates for Fixed Rate Notes will be April 1 and October 1 of
each year and upon maturity or, if applicable, upon redemption, and the Regular
Record Dates for payments of interest on Fixed Rate Notes will be March 15 and
September 15 of each year. Interest payable on any Interest Payment Date for a
Fixed Rate Note will
 
                                      S-3
<PAGE>
be payable by check mailed to the person in whose name such Note is registered
at the close of business on the Regular Record Date next preceding such Interest
Payment Date, except that (a) on any Note originally issued after a Regular
Record Date and prior to the next succeeding Interest Payment Date, the first
payment of interest on such Note will be made on the Interest Payment Date
following the next succeeding Regular Record Date to the registered owner on
such next Regular Record Date and (b) interest payable at maturity (or upon
redemption) will be payable to the person to whom the principal of such Note is
payable. Unless otherwise specified in the applicable Pricing Supplement,
interest on Fixed Rate Notes will be computed on the basis of a 360-day year of
twelve 30-day months. Unless otherwise specified in the applicable Pricing
Supplement, in any case where any payment of principal, premium or interest on a
Fixed Rate Note is due on a day that is not a Business Day, that payment may be
made on the next succeeding Business Day. No additional interest will accrue as
a result of the delay in payment.
 
FLOATING RATE NOTES
 
    The applicable Pricing Supplement will designate one of the following
interest rate bases as applicable to each Floating Rate Note: (a) LIBOR, in the
case of a LIBOR Note, (b) Treasury Rate, in the case of a Treasury Rate Note,
(c) Prime Rate, in the case of a Prime Rate Note, (d) Commercial Paper Rate, in
the case of a Commercial Paper Rate Note, (e) Federal Funds Rate, in the case of
a Federal Funds Rate Note or (f) such other interest rate basis as is set forth
in such Pricing Supplement. Each Floating Rate Note will bear interest at a rate
determined by reference to the interest rate basis specified in the Pricing
Supplement (i) plus or minus (as specified in the Pricing Supplement) the
Spread, if any, or (ii) multiplied by the Spread Multiplier, if any. The
"Spread" is the number of basis points specified in the Pricing Supplement as
being applicable to such Floating Rate Note, and the "Spread Multiplier" is the
percentage specified in the Pricing Supplement as being applicable to such
Floating Rate Note. Any Floating Rate Note may also have either or both of the
following, as specified in the applicable Pricing Supplement: (i) a maximum
interest rate limitation, or ceiling, on the rate of interest which may apply
during any interest period; and (ii) a minimum interest rate limitation, or
floor, on the rate of interest which may apply during any interest period. In
addition, the applicable Pricing Supplement will define or particularize for
each Floating Rate Note the following terms, if applicable: Index Maturity,
Initial Interest Rate, Interest Payment Dates and Interest Reset Dates.
 
    The rate of interest on each Floating Rate Note will be reset daily, weekly,
monthly, quarterly, semi-annually or annually on the Interest Reset Date or
Dates specified in the applicable Pricing Supplement. Unless otherwise specified
in the applicable Pricing Supplement, the Interest Reset Date will be, in the
case of Floating Rate Notes which reset daily, each Business Day; in the case of
Floating Rate Notes (other than Treasury Rate Notes) which reset weekly, the
Wednesday of each week; in the case of Treasury Rate Notes which reset weekly,
the Tuesday of each week (except as provided below); in the case of Floating
Rate Notes which reset monthly, the third Wednesday of each month; in the case
of Floating Rate Notes which reset quarterly, the third Wednesday of March,
June, September and December; in the case of Floating Rate Notes which reset
semi-annually, the third Wednesday of two months of each year specified in the
applicable Pricing Supplement; and in the case of Floating Rate Notes which
reset annually, the third Wednesday of the month of each year specified in the
applicable Pricing Supplement. If any Interest Reset Date for any Floating Rate
Note would otherwise be a day that is not a Business Day, such Interest Reset
Date shall be postponed to the next day that is a Business Day, except, in the
case of a LIBOR Note, if such Business Day is in the next succeeding calendar
month, such Interest Reset Date shall be the next preceding Business Day.
 
    The Interest Determination Date pertaining to an Interest Reset Date for a
LIBOR Note will be the second London Banking Day preceding such Interest Reset
Date. The Interest Determination Date pertaining to an Interest Reset Date for a
Treasury Rate Note will be the day of the week in which such Interest Reset Date
falls on which Treasury bills would normally be auctioned. Treasury bills are
normally sold at auction on Monday of each week, unless that day is a legal
holiday, in which case the auction is
 
                                      S-4
<PAGE>
normally held on the following Tuesday, except that such auction may be held on
the preceding Friday. If, as the result of a legal holiday, an auction is so
held on the preceding Friday, such Friday will be the Interest Determination
Date pertaining to the Interest Reset Date occurring in the next succeeding
week. If an auction date shall fall on any Interest Reset Date for a Treasury
Rate Note, then such Interest Reset Date shall instead be the first Business Day
immediately following such auction date. The Interest Determination Date
pertaining to an Interest Reset Date for a Commercial Paper Rate Note, for a
Federal Funds Rate Note or for a Prime Rate Note will be the second Business Day
next preceding such Interest Reset Date.
 
    Unless otherwise indicated in the applicable Pricing Supplement and except
as provided below, the Interest Payment Dates in the case of Floating Rate Notes
which reset daily, weekly or monthly will be the third Wednesday of each month
or the third Wednesday of March, June, September and December of each year (as
indicated in the applicable Pricing Supplement); in the case of Floating Rate
Notes which reset quarterly, the third Wednesday of March, June, September and
December of each year; in the case of Floating Rate Notes which reset
semi-annually, the third Wednesday of the two months of each year specified in
the applicable Pricing Supplement; in the case of Floating Rate Notes which
reset annually, the third Wednesday of the month specified in the applicable
Pricing Supplement; and, in each case, at maturity. If an Interest Payment Date
with respect to any Floating Rate Note would otherwise fall on a day that is not
a Business Day, such Interest Payment Date will be the following day that is a
Business Day, except that in the case of a LIBOR Note, if such day falls in the
next calendar month, such Interest Payment Date will be the next preceding day
that is a Business Day.
 
    Unless specified in the applicable Pricing Supplement, the Regular Record
Date for each payment of interest on a Floating Rate Note will be the 15th
calendar day prior to the applicable Interest Payment Date. Interest payable on
any Interest Payment Date for a Floating Rate Note will be payable by check
mailed to the person in whose name such Floating Rate Note is registered at the
close of business on the Regular Record Date for such Interest Payment Date,
except that (a) on any Floating Rate Note originally issued between a Regular
Record Date and an Interest Payment Date, the first payment of interest on such
Note will be made on the Interest Payment Date following the next succeeding
Regular Record Date to the registered owner on such next Regular Record Date and
(b) interest payable at maturity (or upon redemption or repayment) will be
payable to the person to whom the principal of the Floating Rate Note is
payable.
 
    Interest payments for Floating Rate Notes will include accrued interest from
the original issue date or from the last date in respect of which interest has
been paid, as the case may be, to, but excluding, the applicable Interest
Payment Date. Accrued interest will be calculated by multiplying the principal
amount of a Note by an accrued interest factor. This accrued interest factor
will be computed by adding the interest factors calculated for each day in the
period for which accrued interest is being calculated. Unless otherwise
specified in the applicable Pricing Supplement, the interest factor (rounded to
the nearest one-hundred thousandth of a percent) for each such day will be
computed by dividing the interest rate applicable to such day by 360, in the
case of LIBOR Notes, Prime Rate Notes, Commercial Paper Rate Notes and Federal
Funds Rate Notes, or by the actual number of days in the year, in the case of
Treasury Rate Notes. The interest rate in effect on each day will be (a) if such
day is an Interest Reset Date, the interest rate with respect to the Interest
Determination Date pertaining to such Interest Reset Date, or (b) if such day is
not an Interest Reset Date, the interest rate with respect to the Interest
Determination Date pertaining to the next preceding Interest Reset Date, subject
in either case to any maximum or minimum interest rate limitation referred to
above and to any adjustment by a Spread or a Spread Multiplier referred to
above; PROVIDED, HOWEVER, that the interest rate in effect for the period from
the date of issue to the first Interest Reset Date with respect to a Floating
Rate Note will be the Initial Interest Rate specified in the Pricing Supplement.
 
    Unless otherwise specified in the applicable Pricing Supplement, the
"Calculation Date," where applicable, pertaining to an Interest Determination
Date is the earlier of (i) the tenth calendar day after
 
                                      S-5
<PAGE>
such Interest Determination Date or if any such day is not a Business Day, the
next succeeding Business Day or (ii) the Business Day immediately preceding the
applicable Interest Payment Date or maturity, as the case may be.
 
    Unless otherwise specified in the applicable Pricing Supplement, all
percentages resulting from any calculation on Floating Rate Notes will be
rounded, if necessary, to the nearest one-hundred thousandth of a percent, with
five one-millionths of a percent rounded upwards (e.g., 9.876545% (or .09876545)
being rounded to 9.87655% (or .0987655) and 9.876544% (or .09876544) being
rounded to 9.87654% (or .0987654)), and all dollar amounts used in or resulting
from such calculation on Floating Rate Notes will be rounded to the nearest cent
(with one-half cent being rounded upwards).
 
    Unless otherwise indicated in the applicable Pricing Supplement, The Chase
Manhattan Bank will be the initial Calculation Agent with respect to each series
of Notes. The Calculation Agent will, upon the request of the holder of any
Floating Rate Note, provide the interest rate then in effect and, if determined,
the interest rate which will become effective as a result of a determination
made with respect to the most recent Interest Determination Date with respect to
such Note.
 
    The interest rate on the Notes will in no event be higher than the maximum
rate permitted by New York law as the same may be modified by United States law
of general application. Under present applicable New York law, the maximum rate
of interest is 25% per annum on a simple interest basis. No limit applies to
Notes in which $2,500,000 or more has been invested.
 
LIBOR NOTES
 
    LIBOR Notes will bear interest at the interest rates (calculated with
reference to LIBOR and the Spread or Spread Multiplier, if any) specified in the
LIBOR Notes and in the applicable Pricing Supplement.
 
    Unless otherwise indicated in the applicable Pricing Supplement, with
respect to a LIBOR Note indexed to the offered rates for U.S. dollar deposits,
"LIBOR" will be determined by the Calculation Agent in accordance with the
following provisions:
 
        (i) With respect to an Interest Determination Date, LIBOR will be: (a)
    If the Designated LIBOR Page specified on the applicable Pricing Supplement
    is Telerate Page 3750 (as defined below), the rate for deposits in U.S.
    dollars having the Index Maturity designated in the applicable Pricing
    Supplement, commencing on the second London Banking Day immediately
    following that Interest Determination Date, that appears on the Telerate
    Page 3750 as of 11:00 a.m., London time, on that Interest Determination Date
    or (b) if the Designated LIBOR Page specified on the applicable Pricing
    Supplement is Reuters Screen LIBO Page (as defined below), the arithmetic
    mean of the offered rates for deposits in U.S. dollars having the Index
    Maturity designated in the applicable Pricing Supplement, commencing on the
    second London Banking Day immediately following such Interest Determination
    Date, which appear on the Reuters Screen LIBO Page as of 11:00 a.m., London
    time, on the Interest Determination Date. In the case where (a) above
    applies, if no rate appears, or in the case where (b) above applies, if
    fewer than two offered rates appear, LIBOR in respect of the Interest
    Determination Date will be determined as if the parties had specified the
    rate described in (ii) below.
 
        (ii) With respect to an Interest Determination Date on which this
    provision applies, LIBOR will be determined on the basis of the rates at
    which deposits in U.S. dollars are offered by four major banks in the London
    interbank market selected by the Calculation Agent (after consultation with
    the Company) at approximately 11:00 a.m., London time, on that Interest
    Determination Date to prime banks in the London interbank market having the
    Index Maturity designated in the Pricing Supplement commencing on the second
    London Banking Day immediately following that Interest Determination Date
    and in a principal amount equal to an amount of not less than U.S. $1
    million that is representative for a single transaction in such market at
    such time. The Calculation Agent will request
 
                                      S-6
<PAGE>
    the principal London office of each of such banks to provide a quotation of
    its rate. If at least two such quotations are provided, LIBOR in respect of
    that Interest Determination Date will be the arithmetic mean of such
    quotations. If fewer than two quotations are provided, LIBOR in respect of
    that Interest Determination Date will be the arithmetic mean of the rates
    quoted by three major money center banks in The City of New York selected by
    the Calculation Agent (after consultation with the Company) at approximately
    11:00 a.m., New York City time, on that Interest Determination Date for
    loans in U.S. dollars to leading European banks, having the Index Maturity
    designated in the applicable Pricing Supplement commencing on the second
    London Banking Day immediately following that Interest Determination Date
    and in a principal amount equal to an amount of not less than U.S. $1
    million that is representative for a single transaction in such market at
    such time; PROVIDED, HOWEVER, that if the banks selected as aforesaid by the
    Calculation Agent are not quoting as mentioned in this sentence, LIBOR for
    the applicable period will be the same as LIBOR for the immediately
    preceding Interest Reset Period (or, if there was no such Interest Reset
    Period, the Initial Interest Rate).
 
    "Telerate Page 3750" means the display designated on page "3750" on the
Telerate Service (or such other page as may replace the 3750 page on that
service or such service or services as may be nominated by the British Bankers'
Association for the purpose of displaying London interbank offered rates for
U.S. dollar deposits). "Reuters Screen LIBO Page" means the display designated
as Page "LIBO" on the Reuters Monitor Money Rate Service (or such other page as
may replace the LIBO page on that service for the purpose of displaying London
Interbank offered rates of major banks). The selection of the Designated LIBOR
Page as the basis for determining LIBOR will be specified in the applicable
Pricing Supplement. If no Designated LIBOR Page is specified in such Pricing
Supplement, LIBOR will be determined as if the Telerate Page 3750 had been
specified as the Designated LIBOR Page.
 
TREASURY RATE NOTES
 
    Treasury Rate Notes will bear interest at the interest rates (calculated
with reference to the Treasury Rate and the Spread or Spread Multiplier, if any)
specified in the applicable Pricing Supplement.
 
    "Treasury Rate" means, with respect to any Interest Determination Date, the
rate for the most recent auction of direct obligations of the United States
("Treasury bills") having the Index Maturity designated in the applicable
Pricing Supplement as published by the Board of Governors of the Federal Reserve
System in "Statistical Release H.15(519), Selected Interest Rates"
("H.15(519)"), or any successor publication of the Board of Governors of the
Federal Reserve System, under the heading "Treasury bills-- auction average
(investment)" or, if not so published by 9:00 a.m., New York City time, on the
Calculation Date pertaining to such Interest Determination Date, the auction
average rate, expressed as a Bond Equivalent Yield (as defined below), as
otherwise announced by the United States Department of the Treasury. In the
event that the results of the auction of Treasury bills having the Index
Maturity designated in the applicable Pricing Supplement are not published or
reported as provided above by 3:00 p.m., New York City time, on such Calculation
Date or if no such auction is held in a particular week, then the Treasury Rate
shall be calculated by the Calculation Agent and shall be a yield to maturity,
expressed as a Bond Equivalent Yield, of the arithmetic mean of the secondary
market bid rates, as of approximately 3:30 p.m., New York City time, on such
Interest Determination Date, of three leading primary United States government
securities dealers selected by the Calculation Agent (after consultation with
the Company) for the issue of Treasury bills with a remaining maturity closest
to the Index Maturity designated in the applicable Pricing Supplement; PROVIDED,
HOWEVER, that if the dealers selected as aforesaid by the Calculation Agent are
not quoting as mentioned in this sentence, the Treasury Rate will be the
Treasury Rate in effect on such Interest Determination Date.
 
    "Bond Equivalent Yield" means a yield (expressed as a percentage rounded to
the nearest one-hundred thousandth of a percent) calculated in accordance with
the following formula:
 
                                      S-7
<PAGE>
 
<TABLE>
<C>                        <C>              <S>
  Bond Equivalent Yield =       D X N       X 100
                            360 - (D X M)
</TABLE>
 
where "D" refers to the per annum rate for Treasury bills, quoted on a bank
discount basis and expressed as a decimal; "N" refers to the actual number of
days in the year for which interest is being calculated; and "M" refers to the
actual number of days in the interest period for which interest is being
calculated.
 
PRIME RATE NOTES
 
    Prime Rate Notes will bear interest at the interest rate (calculated with
reference to the Prime Rate and the Spread or Spread Multiplier, if any)
specified in the Prime Rate Notes and in the applicable Pricing Supplement,
except that the initial interest rate for each Prime Rate Note will be the rate
specified in the applicable Pricing Supplement.
 
    Unless otherwise specified in the applicable Pricing Supplement, the "Prime
Rate" means, with respect to any Interest Determination Date, the rate on such
date as published by the Board of Governors of the Federal Reserve System in
H.15(519) under the heading "Bank Prime Loan." If such rate is not published by
9:00 a.m., New York City time, on the Calculation Date pertaining to such
Interest Determination Date, the Prime Rate will be determined by the
Calculation Agent and will be the arithmetic mean of the rates of interest
publicly announced by each bank named on the "Reuters Screen USPRIME1 Page" (as
defined below) as such bank's prime rate or base lending rate as in effect for
such Interest Determination Date. "Reuters Screen USPRIME1 Page" means the
display designated as page "USPRIME1" on the Reuters Monitor Money Rates Service
(such term to include such other page as may replace the USPRIME1 page on that
Service for the purpose of displaying prime rates or base lending rates of major
United States banks). If fewer than four such rates but more than one such rate
appear on the Reuters Screen USPRIME1 Page for such Interest Determination Date,
the Prime Rate will be determined by the Calculation Agent and will be the
arithmetic mean of the prime rates quoted on the basis of the actual number of
days in the year divided by 360 as of the close of business on such Interest
Determination Date by four major money center banks in The City of New York
selected by the Calculation Agent from a list approved by the Company. If fewer
than two such rates appear on the Reuters Screen USPRIME1 Page, the Prime Rate
will be calculated by the Calculation Agent and will be determined as the
arithmetic mean of the prime rates furnished in The City of New York by the
appropriate number of substitute banks or trust companies organized and doing
business under the laws of the United States, or any State thereof, in each case
having total equity capital of at least U.S.$500,000,000 and being subject to
supervision or examination by federal or state authority, selected by the
Calculation Agent from a list approved by the Company to provide such rate or
rates; provided that if the banks or trust companies selected as aforesaid by
the Calculation Agent from a list approved by the Company are not quoting as
mentioned in this sentence, the rate of interest in effect for the applicable
period will be the rate of interest in effect on such Interest Determination
Date.
 
COMMERCIAL PAPER RATE NOTES
 
    Commercial Paper Rate Notes will bear interest at the interest rates
(calculated with reference to the Commercial Paper Rate and the Spread or Spread
Multiplier, if any) specified in the applicable Pricing Supplement.
 
    "Commercial Paper Rate" means, with respect to any Interest Determination
Date, the Money Market Yield (as defined below) of the rate on that date for
commercial paper having the Index Maturity designated in the applicable Pricing
Supplement as published in H.15(519), under the heading "Commercial
Paper--Non-financial." In the event that such rate is not published by 9:00
a.m., New York City time, on the Calculation Date pertaining to such Interest
Determination Date, then the Commercial Paper Rate shall be the Money Market
Yield of the rate on that Interest Determination Date for commercial paper
 
                                      S-8
<PAGE>
having the Index Maturity designated in the applicable Pricing Supplement as
published by the Federal Reserve Bank of New York in its daily statistical
release, "Composite 3:30 p.m. Quotations for U.S. Government Securities"
("Composite Quotations") under the heading "Commercial Paper." If by 3:00 p.m.,
New York City time, on such Calculation Date such rate is not yet published in
Composite Quotations, the Commercial Paper Rate for that Interest Determination
Date shall be calculated by the Calculation Agent and shall be the Money Market
Yield of the arithmetic mean (rounded to the nearest one-hundred thousandth of a
percent) of the offered rates of three leading dealers of commercial paper in
The City of New York selected by the Calculation Agent (after consultation with
the Company) as of 11:00 a.m., New York City time, on that Interest
Determination Date, for commercial paper having the Index Maturity designated in
the applicable Pricing Supplement placed for an industrial issuer whose bond
rating is "AA," or the equivalent, from a nationally recognized rating agency;
PROVIDED, HOWEVER, that if the dealers selected as aforesaid by the Calculation
Agent are not quoting as mentioned in this sentence, the Commercial Paper Rate
will be the Commercial Paper Rate in effect on such Interest Determination Date.
 
    "Money Market Yield" means a yield (expressed as a percentage rounded to the
nearest one-hundred thousandth of a percent) calculated in accordance with the
following formula:
 
<TABLE>
<S>                    <C>              <C>
Money Market Yield =       D X 360      X 100
                        360 - (D X M)
</TABLE>
 
where "D" refers to the per annum rate for commercial paper quoted on a bank
discount basis and expressed as a decimal; and "M" refers to the actual number
of days in the interest period for which interest is being calculated.
 
FEDERAL FUNDS RATE NOTES
 
    Federal Funds Rate Notes will bear interest at the interest rates calculated
with reference to the Federal Funds Rate and the Spread or Spread Multiplier, if
any, specified in the Federal Funds Rate Notes and in the applicable Pricing
Supplement.
 
    Unless otherwise specified in the applicable Pricing Supplement, the
"Federal Funds Rate" means, with respect to any Interest Determination Date, the
rate on such date for federal funds as published in H.15(519) under the heading
"Federal Funds (Effective)" or if not published by 3:00 p.m., New York City
time, on the related Calculation Date, the rate on such Interest Determination
Date as published in Composite Quotations under the heading "Federal
Funds/Effective Rate." If by 3:00 p.m., New York City time, on the related
Calculation Date such rate is not published in either H.15(519) or Composite
Quotations, then the Federal Funds Rate on such Interest Determination Date will
be calculated by the Calculation Agent and will be the arithmetic mean of the
rates for the last transaction in overnight United States dollar federal funds
arranged by three leading brokers of federal funds transactions in overnight
transactions in The City of New York (which may include the Agents or their
affiliates) selected by the Calculation Agent (after consultation with the
Company) prior to 9:00 a.m., New York City time, on such Interest Determination
Date; provided, however, that if the brokers so selected by the Calculation
Agent are not quoting as mentioned in this sentence, the Federal Funds Rate
determined as of such Interest Determination Date will be the Federal Funds Rate
then in effect on such Interest Determination Date.
 
AMORTIZING NOTES
 
    The Company may from time to time offer Amortizing Notes. Unless otherwise
specified in the applicable Pricing Supplement, interest on each Amortizing Note
will be computed on the basis of a 360-day year of twelve 30-day months.
Payments with respect to Amortizing Notes will be applied first to interest due
and payable thereon and then to the reduction of the unpaid principal amount
thereof. Further information concerning additional terms and provisions of
Amortizing Notes will be specified in the applicable Pricing Supplement. A table
setting forth repayment information in respect of each Amortizing Note will be
included in the applicable Pricing Supplement and set forth in each such Note.
 
                                      S-9
<PAGE>
INDEXED NOTES
 
    Notes may be issued with the amount of principal, premium and/or interest
payable in respect thereof to be determined with reference to the price, prices
or values of specified currencies, commodities, stock, other securities,
interest or other notes, to the exchange rate of one or more specified
currencies (including a composite currency such as the ECU) relative to an
indexed currency, or to such other items ("Indexed Notes"), in each case as set
forth in the applicable Pricing Supplement. In certain cases, holders of Indexed
Notes may receive a principal amount on maturity that is greater than or less
than the face amount of the Notes depending upon the relative value on maturity
of the specified indexed item. Information as to the method for determining the
amount of principal, premium, if any, and/or interest payable in respect of
Indexed Notes, certain historical information with respect to the specified
indexed items and material tax considerations associated with an investment in
such Indexed Notes will be set forth in the applicable Pricing Supplement.
 
    An investment in Indexed Notes entails significant risks that are not
associated with similar investments in a conventional fixed-rate debt security.
If the interest rate on such a Note is so indexed, it may result in an interest
rate that is less than that payable on a conventional fixed-rate debt security
issued at the same time, including the possibility that no interest will be paid
or that negative interest will accrue, and, if the principal amount of such a
Note is so indexed, the principal amount payable at maturity may be less than
the original purchase price of such Note if allowed pursuant to the terms of
such Note, including the possibility that no principal will be paid, or if such
principal amount is utilized to net against accrued negative interest, the
principal amount payable at maturity may be less than the original purchase
price of such Note if allowed pursuant to the terms of such Note, including the
possibility that no principal will be paid. The secondary market for such Notes
will be affected by a number of factors, independent of the creditworthiness of
the issuer and the value of the applicable index, the time remaining to the
maturity of such Notes, the amount outstanding of such Notes and market interest
rates. The value of the applicable index depends on a number of interrelated
factors, including economic, financial and political events, over which the
Company has no control. Additionally, if the formula used to determine the
principal amount or interest payable with respect to such Notes contains a
multiple or leverage factor, the effect of any change in the applicable index
will be increased. The historical experience of the relevant indices should not
be taken as an indication of future performance of such indices during the term
of any Note. The credit ratings assigned to the Company's medium-term note
program are a reflection of the Company's credit status and, in no way, are a
reflection of the potential impact of the factors discussed above, or any other
factors, on the market value of the Notes. Accordingly, prospective investors
should consult their own financial and legal advisors as to the risk entailed by
an investment in such Notes and the suitability of such Notes in light of their
particular circumstances.
 
PROSPECTIVE INVESTORS SHOULD CONSULT THEIR OWN FINANCIAL AND LEGAL ADVISORS AS
TO THE RISKS ENTAILED BY AN INVESTMENT IN SUCH NOTES. SUCH NOTES ARE NOT AN
APPROPRIATE INVESTMENT FOR INVESTORS WHO ARE UNSOPHISTICATED WITH RESPECT TO
FOREIGN CURRENCY, CURRENCY UNIT, COMMODITIES, SECURITIES, OR OTHER INDICES, OR
ANY OTHER FORM OF INDEXED NOTES BASED THEREON.
 
FLOATING RATE/FIXED RATE NOTES
 
    The applicable Pricing Supplement may provide that a Note will be a Floating
Rate Note for a portion of its term and a Fixed Rate Note for a portion of its
term, in which event the interest rate on such Note will be determined as herein
provided as if it were a Floating Rate Note and a Fixed Rate Note hereunder for
each specified period, as shall be set out in such applicble Pricing Supplement.
 
                                      S-10
<PAGE>
OTHER PROVISIONS
 
    Any provisions with respect to a Note, including the specification and
determination of one or more interest rate bases, the calculation of the
interest applicable to, and/or the principal payable at the maturity of a Note,
any redemption, extension or repayment provisions, or any other provisions
relating to a Note, may be modified and/or supplemented to the extent such
provisions are not inconsistent with the terms of the Senior Indenture, so long
as such other or additional provisions are so specified in the Note as well as
in the applicable Pricing Supplement.
 
BOOK-ENTRY NOTES
 
    Unless otherwise specified in the applicable Pricing Supplement, the
following provisions will apply to all Book-Entry Notes. Book-Entry Notes of any
series will be issued in the form of one or more registered Global Notes
(collectively, the "Global Note") that will be deposited with, or on behalf of,
The Depository Trust Company, New York, New York, as Depositary (the
"Depositary"), and registered in the name of the Depositary's nominee. Unless
and until it is exchanged in whole or in part for Notes in definitive registered
form, the Global Note may not be transferred except as a whole by the Depositary
to another nominee of the Depositary or to a successor depositary or a nominee
of such successor.
 
    Upon the issuance of the Global Note, the Depositary will credit, on its
book-entry registration and transfer system, the principal amount of the Notes
represented by the Global Note to accounts of institutions that have accounts
with the Depositary ("participants"). The accounts to be credited will be
designated by the Agents, or the Company in the event of a direct sale of Notes.
Owners of beneficial interests in the Global Note that are not participants or
persons that may hold through participants but desire to purchase, sell or
otherwise transfer ownership of the Notes by book-entry on the records of the
Depositary may do so only through participants and persons that may hold through
participants. Because the Depositary can only act on behalf of participants and
persons that may hold through participants, the ability of an owner of a
beneficial interest in the Global Note to pledge Notes to persons or entities
that do not participate in the book-entry and transfer system of the Depositary,
or otherwise take actions in respect of such Notes, may be limited. In addition,
the laws of some states require that certain purchasers of securities take
physical delivery of such securities in definitive form. Such limits and such
laws may impair a purchaser's ability to transfer beneficial interests in the
Global Note.
 
    So long as the Depositary, or its nominee, is the registered owner of the
Global Note, the Depositary or such nominee, as the case may be, will be
considered the sole owner or holder of the Notes represented by the Global Note
for all purposes under the Indenture. Except as set forth below, owners of
beneficial interests in the Global Note will not be entitled to have Notes
represented by the Global Note registered in their names, will not receive or be
entitled to receive physical delivery of Notes in definitive form and will not
be considered the owners or holders thereof under the Indenture.
 
    Principal and interest payments on Notes registered in the name of the
Depositary or its nominee will be made to the Depositary or its nominee, as the
case may be, as the registered owner of the Global Note. None of the Company,
the Trustee, any paying agent or the Note registrar will have any responsibility
or liability for any aspect of the records relating to, or payments made on
account of, beneficial ownership interests in the Global Note or for
maintaining, supervising or reviewing any records relating to such beneficial
ownership interests.
 
    The Company expects that the Depositary, upon receipt of any payment of
principal or interest, will credit immediately participants' accounts with
payments in amounts proportionate to their respective beneficial interests in
the principal amount of the Global Note as shown on the records of the
Depositary. The Company also expects that payments by participants to owners of
beneficial interests in the Global Note held through such participants will be
governed by standing instructions and customary practices, as is now the case
with securities held for the accounts of customers and registered in "street
name," and will be the responsibility of such participants. Owners of beneficial
interests in the Global Note that hold
 
                                      S-11
<PAGE>
through the Depositary under a book-entry format (as opposed to holding
certificates directly) may experience some delay in the receipt of interest
payments since the Depositary will forward payments to its participants, which
in turn will forward them to persons that hold through participants or such
owners.
 
    If the Depositary is at any time unwilling or unable to continue as
depositary and a successor depositary is not appointed by the Company or the
Depositary within ninety days, the Company will issue Notes in definitive
registered form in exchange for all of the Global Note. In addition, the Company
or the Depositary may at any time and in its sole discretion determine not to
have the Notes represented by the Global Note and, in such event, the Company
will issue Notes in definitive registered form in exchange for all of the Global
Note. In either instance, an owner of a beneficial interest in the Global Note
will be entitled to have Notes equal in principal amount to such beneficial
interest registered in its name and will be entitled to physical delivery of
such Notes in definitive form.
 
    The Depositary has advised the Company as follows: the Depositary 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 New York Uniform Commercial Code and a "clearing agency"
registered pursuant to the provisions of Section 17A of the Securities Exchange
Act of 1934. The Depositary was created to hold securities of its participants
and to facilitate the clearance and settlement of securities transactions among
its participants in such securities through electronic book-entry changes in
accounts of the participants, thereby eliminating the need for physical movement
of securities certificates. The Depositary's participants include securities
brokers and dealers, banks, trust companies, clearing corporations and certain
other organizations, some of whom (and/or their representatives) own the
Depositary. Access to the Depositary's book-entry system is also available to
others, such as banks, brokers, dealers and trust companies, that clear through
or maintain a custodial relationship with a participant, either directly or
indirectly.
 
REDEMPTION AND REPURCHASE BY COMPANY
 
    The Pricing Supplement relating to each Note may indicate that such Note
will be redeemable at the option of the Company on a date or dates or under
circumstances specified prior to its maturity at a price or prices set forth in
the applicable Pricing Supplement, together with accrued interest to the date of
redemption. Unless otherwise specified in the applicable Pricing Supplement, the
Notes will not be subject to redemption prior to maturity. Unless otherwise
specified in the applicable Pricing Supplement, the Notes will not be subject to
any sinking fund. The Company may redeem any of the Notes that are redeemable
and remain outstanding either in whole or from time to time in part, upon not
less than 30 nor more than 60 days' notice, unless otherwise specified in the
applicable Pricing Supplement. If less than all of the Notes having the same
terms (except as to principal amount and date of issuance) are to be redeemed,
the Notes to be redeemed shall be selected by the Trustee by such method as the
Trustee shall deem fair and appropriate.
 
    The Company may at any time repurchase Notes at any price in the open market
or otherwise. Notes so purchased by the Company may, at the discretion of the
Company, be held or resold or surrendered to the Trustee for cancellation.
 
REPAYMENT AT OPTION OF HOLDER
 
    If (but only if) the Pricing Supplement relating to any Note indicates that
such Note will be repayable at the option of the holder on a date or dates prior
to maturity, and at a price or prices, set forth in such Pricing Supplement,
together with accrued interest to the date of repayment, then such Note will be
subject to such repayment option.
 
    In order for a Note to be repaid, unless otherwise specified in the
applicable Pricing Supplement, the Trustee must receive at least 30 days but not
more than 45 days prior to the repayment date (a) appropriate wire instructions
and (b) either (i) the Note with the form entitled "Option to Elect Repayment"
on the
 
                                      S-12
<PAGE>
reverse of the Note duly completed or (ii) a telegram, telex, facsimile
transmission or letter from a member of a national securities exchange or the
National Association of Securities Dealers, Inc., or a commercial bank or trust
company in the United States or any other "eligible guarantor institution" (as
such term is defined in Rule 17Ad-15 under the Securities Exchange Act of 1934)
setting forth the name of the holder of the Note, the principal amount of the
Note, the portion of the principal amount of the Note to be repaid, the
certificate number or a description of the tenor and terms of the Note, a
statement that the option to elect repayment is being exercised thereby and a
guarantee that the Note to be repaid with the form entitled "Option to Elect
Repayment" on the reverse of the Note duly completed will be received by the
Trustee not later than five Business Days after the date of such telegram,
telex, facsimile transmission or letter and such Note and form duly completed
must be received by the Trustee by such fifth Business Day. Exercise of the
repayment option by the holder of a Note shall be irrevocable. The repayment
option may be exercised by the holder of a Note for less than the entire
principal amount of the Note provided that the principal amount of the Note
remaining outstanding after repayment is an authorized denomination. No transfer
or exchange of any Note (or, in the event that any Note is to be repaid in part,
the portion of the Note to be repaid) will be permitted after exercise of a
repayment option. All questions as to the validity, eligibility (including time
of receipt) and acceptance of any Note for repayment will be determined by the
Company, whose determination will be final, binding and non-appealable.
 
    If a Note is represented by a Global Note, the Depositary's nominee will be
the holder of such Note and therefore will be the only entity that can exercise
a right to repayment. In order to ensure that the Depositary's nominee will
timely exercise a right to repayment with respect to a particular Note, the
beneficial owner of such Note must instruct the broker or other direct or
indirect participant through which it holds an interest in such Note to notify
the Depositary of its desire to exercise a right to repayment. Different firms
have different cutoff times for accepting instructions from their customers and,
accordingly, each beneficial owner should consult the broker or other direct or
indirect participant through which it holds an interest in a Note in order to
ascertain the cutoff time by which such an instruction must be given in order
for timely notice to be delivered to the Depositary.
 
                                 CURRENCY RISKS
 
EXCHANGE RATES AND EXCHANGE CONTROLS
 
    An investment in a Note having a Specified Currency other than U.S. dollars
entails significant risks that are not associated with a similar investment in a
security denominated in U.S. dollars. Such risks include, without limitation,
the possibility of significant changes in rates of exchange between the U.S.
dollar and such Specified Currency and the possibility of the imposition or
modification of foreign exchange controls with respect to such Specified
Currency. Such risks generally depend on factors over which the Company has no
control and which cannot be readily foreseen, such as economic and political
events and the supply of and demand for the relevant currencies. In recent
years, rates of exchange between the U.S. dollar and certain currencies have
been highly volatile, and such volatility may be expected in the future.
Fluctuations in any particular exchange rate that have occurred in the past are
not necessarily indicative, however, of fluctuations in the rate that may occur
during the term of any Note. Depreciation of the Specified Currency for a Note
against the U.S. dollar would result in a decrease in the effective yield of
such Note below its coupon rate and, in certain circumstances, could result in a
substantial loss to the investor on a U.S. dollar basis.
 
    Governments have from time to time imposed, and may in the future impose,
exchange controls that could affect exchange rates as well as the availability
of a Specified Currency for making payments in respect of Notes denominated in
such currency. There can be no assurances that exchange controls will not
restrict or prohibit payments of principal, premium or interest in any Specified
Currency. Even if there are no actual exchange controls, it is possible that, on
a payment date with respect to any particular Note, the currency in which
amounts then due in respect of such Note are payable would not be available to
the
 
                                      S-13
<PAGE>
Company. In that event, the Company will make such payments in the manner set
forth under "Description of Notes--Payment of Principal and Interest Payable in
a Specified Currency Other Than U.S. Dollars" above.
 
PROSPECTIVE PURCHASERS SHOULD CONSULT THEIR OWN FINANCIAL AND LEGAL ADVISORS AS
TO THE RISKS ENTAILED BY AN INVESTMENT IN NOTES DENOMINATED IN A CURRENCY OTHER
THAN U.S. DOLLARS. SUCH NOTES ARE NOT AN APPROPRIATE INVESTMENT FOR PERSONS WHO
ARE UNSOPHISTICATED WITH RESPECT TO FOREIGN CURRENCY TRANSACTIONS.
 
    The information set forth in this Prospectus Supplement is directed to
prospective purchasers of Notes who are United States residents, and the Company
disclaims any responsibility to advise prospective purchasers who are residents
of countries other than the United States with respect to any matters that may
affect the purchase or holding of, or receipt of payments of principal, premium
or interest in respect of, Notes. Such persons should consult their own advisors
with regard to such matters.
 
    Any Pricing Supplement relating to Notes having a Specified Currency other
than U.S. dollars will contain a description of any material exchange controls
affecting such currency and any other required information concerning such
currency.
 
PAYMENT CURRENCY
 
    Except as set forth below, if payment in respect of a Note is required to be
made in a Specified Currency other than U.S. dollars and such currency is
unavailable due to the imposition of exchange controls or other circumstances
beyond the Company's control or is no longer used by the government of the
country issuing such currency or for the settlement of transactions by public
institutions of or within the international banking community, then all payments
in respect of such Note shall be made in U.S. dollars until such currency is
again available or so used. The amounts so payable on any date in such currency
shall be converted into U.S. dollars on the basis of the most recently available
market exchange rate for such currency or as otherwise indicated in the
applicable Pricing Supplement. Any payment in respect of such Note made under
such circumstances in U.S. dollars will not constitute an Event of Default under
the Indenture under which such Note shall have been issued.
 
    If payment in respect of a Note is required to be made in ECU and ECU are no
longer used in the European Monetary System, then all payments in respect of
such Note shall be made in U.S. dollars until ECU are again so used. The amount
of each payment in U.S. dollars shall be computed on the basis of the equivalent
of ECU in U.S. dollars, determined as described below, as of the second Business
Day prior to the date on which such payment is due.
 
    The equivalent of ECU in U.S. dollars as of any date shall be determined by
the Trustee for such Note on the following basis. The component currencies of
ECU for this purpose (the "Components") shall be the currency amounts that were
components of ECU as of the last date on which ECU were used in the European
Monetary System. The equivalent of ECU in U.S. dollars shall be calculated by
aggregating the U.S. dollar equivalents of the Components. The U.S. dollar
equivalent of each of the Components shall be determined by such Trustee or such
Exchange Rate Agent, as the case may be, on the basis of the most recently
available Market Exchange Rates for such Components or as otherwise indicated in
the applicable Pricing Supplement.
 
    If the official unit of any component currency is altered by way of
combination or subdivision, the number of units of that currency as a Component
shall be divided or multiplied in the same proportion. If two or more component
currencies are consolidated into a single currency, the amounts of those
currencies as Components shall be replaced by an amount in such single currency
equal to the sum of the amounts of the consolidated component currencies
expressed in such single currency. If any component currency is divided into two
or more currencies, the amount of that currency as a Component shall be
 
                                      S-14
<PAGE>
replaced by amounts of such two or more currencies, each of which shall be equal
to the amount of the former component currency divided by the number of
currencies into which that currency was divided.
 
    All determinations referred to above made by the Trustee for the Notes or
the Exchange Rate Agent, as the case may be, shall be at its sole discretion and
shall, in the absence of manifest error, be conclusive for all purposes and
binding on holders of Notes.
 
FOREIGN CURRENCY JUDGMENTS
 
    The Notes will be governed by and construed in accordance with the law of
the State of New York. Courts in the United States customarily have not rendered
judgments for money damages denominated in any currency other than the U.S.
dollar. A 1987 amendment to the Judiciary Law of the State of New York provides,
however, that an action based upon an obligation denominated in a currency other
than U.S. dollars will be rendered in the foreign currency of the underlying
obligation and converted into U.S. dollars at the rate of exchange prevailing on
the date of the entry of the judgment or decree.
 
            CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS
 
    The following is a summary of the principal U.S. Federal income tax
consequences resulting from the beneficial ownership of Notes by certain
persons. This summary does not purport to consider all the possible U.S. Federal
tax consequences of the purchase, ownership or disposition of the Notes and is
not intended to reflect the individual tax position of any beneficial owner. It
deals only with Notes and currencies or composite currencies other than U.S.
dollars ("Foreign Currency") held as capital assets. Moreover, except as
expressly indicated, it addresses initial purchasers and does not address
beneficial owners that may be subject to special tax rules, such as banks,
insurance companies, dealers in securities or currencies, purchasers that hold
Notes (or Foreign Currency) as a hedge against currency risks or as part of a
straddle with other investments or as part of a "synthetic security" or other
integrated investment (including a "conversion transaction") comprised of a Note
and one or more other investments, purchasers that have a "functional currency"
other than the U.S. dollar and persons who have ceased to be United States
citizens or to be taxed as resident aliens. This summary is based upon the U.S.
Federal tax laws and regulations as now in effect and as currently interpreted
and does not take into account possible changes in such tax laws or such
interpretations, any of which may be applied retroactively. It does not include
any description of the tax laws of any state, local or foreign governments that
may be applicable to the Notes or holders thereof, and it does not discuss the
tax treatment of Notes denominated in certain hyperinflationary currencies or
dual-currency Notes. Persons considering the purchase of Notes should consult
their own tax advisors concerning the application of the U.S. Federal tax laws
to their particular situations as well as any consequences to them under the
laws of any other taxing jurisdiction.
 
                                  U.S. HOLDERS
 
PAYMENTS OF INTEREST
 
    In general, interest on a Note, whether payable in U.S. dollars or a Foreign
Currency (other than certain payments on a Discount Note, as defined and
described below under "Original Issue Discount"), will be taxable to a
beneficial owner who is, for United States Federal income tax purposes, (i) a
citizen or resident of the United States, (ii) a corporation created or
organized under the laws of the United States or any State thereof (including
the District of Columbia) or (iii) a person otherwise subject to Federal income
taxation on its worldwide income (a "U.S. Holder") as ordinary income at the
time it is received or accrued, depending on the holder's method of accounting
for tax purposes. If an interest payment is denominated in or determined by
reference to a Foreign Currency, then special rules, described below under
"Foreign Currency Notes," apply.
 
                                      S-15
<PAGE>
ORIGINAL ISSUE DISCOUNT
 
    The following discussion summarizes the United States Federal income tax
consequences to U.S. Holders of Notes issued with original issue discount for
Federal income tax purposes ("OID"). U.S. Holders of a Note issued with OID
generally will be subject to special tax accounting rules provided in the
Internal Revenue Code of 1986, as amended (the "Code"), and certain final
regulations promulgated thereunder (the "OID Regulations").
 
    Special rules apply to OID on a Discount Note that is denominated in Foreign
Currency. See "Foreign Currency Notes--Foreign Currency Discount Notes."
 
    GENERAL.  A Note will be treated as issued with OID (a "Discount Note") if
the excess of the Note's "stated redemption price at maturity" over its "issue
price" is greater than a DE MINIMIS amount (set forth in the Code and the OID
Regulations). Generally, the "issue price" of a Note (or any Note that is part
of an issue of Notes) will be the first price at which a substantial amount of
Notes that are part of such issue of Notes is sold (other than to underwriters,
placement agents or wholesalers). Under the OID Regulations, the "stated
redemption price at maturity" of a Note is the sum of all payments provided by
the Note that are not payments of "qualified stated interest." A "qualified
stated interest" payment includes any stated interest payment on a Note that is
unconditionally payable in cash or property (other than debt instruments of the
Company) at least annually at a single fixed rate (or at certain floating rates)
that appropriately takes into account the length of the interval between stated
interest payments. The applicable Pricing Supplement will state whether a
particular issue of Notes will constitute an issue of Discount Notes.
 
    In general, if the excess of a Note's stated redemption price at maturity
over its issue price is DE MINIMIS, then such excess constitutes "DE MINIMIS
OID." Under the OID Regulations, unless the election described below under
"Election To Treat All Interest as Original Issue Discount" is made, such a Note
will not be treated as issued with OID (in which case the following paragraphs
under "Original Issue Discount" will not apply) and a U.S. Holder of such a Note
will recognize capital gain with respect to such DE MINIMIS OID as stated
principal payments on the Note are made. The amount of such gain with respect to
each such payment will equal the product of the total amount of the Note's DE
MINIMIS OID and a fraction, the numerator of which is the amount of the
principal payment made and the denominator of which is the stated principal
amount of the Note.
 
    In certain cases, Notes that bear stated interest and are issued at par may
be deemed to bear OID for Federal income tax purposes, with the result that the
inclusion of interest in income for Federal income tax purposes may vary from
the actual cash payments of interest made on such Notes, generally accelerating
income for cash method taxpayers. Under the OID Regulations, a Note may be a
Discount Note where, among other things, (i) a Note bearing interest at a
floating rate (a "Floating Rate Note") provides for a maximum interest rate or a
minimum interest rate that is reasonably expected as of the issue date to cause
the yield on the debt instrument to be significantly less, in the case of a
maximum rate, or more, in the case of a minimum rate, than the expected yield
determined without the maximum or minimum rate, as the case may be; (ii) a
Floating Rate Note provides for significant front-loading or back-loading of
interest; or (iii) a Note bears interest at a floating rate in combination with
one or more other floating or fixed rates. Notice will be given in the
applicable Pricing Supplement when the Company determines that a particular Note
will be a Discount Note. Unless specified in the applicable Pricing Supplement,
Floating Rate Notes will not be Discount Notes.
 
    The Code and the OID Regulations provide rules that require a U.S. Holder of
a Discount Note having a maturity of more than one year from its date of issue
to include OID in gross income as it accrues in accordance with a constant yield
method based on a compounding of interest before the receipt of cash
attributable to such income, without regard to the holder's method of accounting
for tax purposes.
 
    Under this method, U.S. Holders of Discount Notes generally will have to
include in income increasingly greater amounts of OID over the life of the
Notes.
 
                                      S-16
<PAGE>
    ACQUISITION PREMIUM.  A U.S. Holder that purchases a Discount Note at its
original issuance for an amount in excess of its issue price but less than its
stated redemption price at maturity (any such excess being "acquisition
premium"), and that does not make the election described below under "Original
Issue Discount--Election To Treat All Interest as Original Issue Discount," is
permitted to reduce the amount of OID includable in income with respect to such
Discount Note for any taxable year by the portion of such acquisition premium
properly allocable to such year.
 
    OPTIONAL REDEMPTION.  If the Company has an unconditional option to redeem a
Note, or the holder has an unconditional option to cause a Note to be
repurchased, prior to the Note's stated maturity for an amount known as of the
issue date, such option will be presumed to be exercised for the purpose of
determining OID on the Note if, by utilizing any date on which such Note may be
redeemed or repurchased as the maturity date and the amount payable on such date
in accordance with the terms of such Note (the "redemption price") as the stated
redemption price at maturity, the yield on the Note would be (i) in the case of
an option of the Company, lower than its yield to stated maturity, or (ii) in
the case of an option of the holder, higher than its yield to stated maturity.
If such option is not in fact exercised when presumed to be exercised, the Note
would be treated solely for OID purposes as if it were redeemed or repurchased,
and a new Note were issued, on the presumed exercise date for an amount equal to
the Note's adjusted issue price on that date.
 
    SHORT-TERM NOTES.  Under the Code, special rules apply with respect to OID
on Notes that mature one year or less from the date of issuance ("Short-Term
Notes"). In general, a cash basis U.S. Holder of a Short-Term Note is not
required to include OID in income as it accrues for United States Federal income
tax purposes unless it elects to do so. Accrual basis U.S. Holders and certain
other U.S. Holders, including banks, regulated investment companies, dealers in
securities and cash basis U.S. Holders who so elect, are required to include OID
in income as it accrues on Short-Term Notes on a straight-line basis or, at the
election of the U.S. Holder, under the constant yield method (based on daily
compounding). In the case of U.S. Holders not required and not electing to
include OID in income currently, any gain realized on the sale or retirement of
Short-Term Notes will be ordinary income to the extent of the OID accrued on a
straight-line basis (unless an election is made to accrue the original issue
discount under the constant yield method), reduced by any interest received,
through the date of sale or retirement. U.S. Holders who are not required and do
not elect to include OID on Short-Term Notes in income as it accrues will be
required to defer deductions for interest on borrowings allocable to Short-Term
Notes in an amount not exceeding the deferred income until the deferred income
is recognized.
 
    Any U.S. Holder of a Short-Term Note can elect to apply the rules in the
preceding paragraph taking into account the amount of "acquisition discount," if
any, with respect to the Note (rather than the OID with respect to such Note).
Acquisition discount is the excess of the stated redemption price at maturity of
the Short-Term Note over the U.S. Holder's purchase price therefor. Acquisition
discount will be treated as accruing on a ratable basis or, at the election of
the U.S. Holder, on a constant-yield basis.
 
    For purposes of determining the amount of OID subject to these rules, the
OID Regulations provide that no interest payments on a Short-Term Note are
qualified stated interest, but instead such interest payments are included in
the Short-Term Note's stated redemption price at maturity. Actual receipt of
stated interest will be taxable to the extent of accrued OID at the time of
receipt.
 
NOTES PURCHASED AT A PREMIUM
 
    Under the Code, a U.S. Holder that purchases a Note for an amount in excess
of its stated redemption price at maturity will not be subject to the OID rules
and may elect to treat such excess as "amortizable bond premium," in which case
the amount of qualified stated interest required to be included in the U.S.
Holder's income each year with respect to interest on the Note will be reduced
by the amount of amortizable bond premium allocable (based on the Note's yield
to maturity) to such year. Any election to amortize bond premium is applicable
to all taxable bonds held by the U.S. Holder at the beginning of the
 
                                      S-17
<PAGE>
first taxable year to which the election applies or thereafter acquired by the
U.S. Holder, and may not be revoked without the consent of the Internal Revenue
Service ("IRS"). A U.S. Holder that does not elect to amortize bond premium will
generally be entitled to treat the premium as capital loss when the Note
matures. See also "Original Issue Discount--Election To Treat All Interest as
Original Issue Discount."
 
NOTES PURCHASED AT A MARKET DISCOUNT
 
    A Note, other than a Short-Term Note, will be treated as issued at a market
discount (a "Market Discount Note") if the amount for which a U.S. Holder
purchased the Note at its original issuance is less than the Note's issue price,
subject to a DE MINIMIS rule similar to the rule relating to DE MINIMIS OID
described under "Original Issue Discount--General."
 
    In general, any gain recognized on the maturity or disposition of a Market
Discount Note will be treated as ordinary income to the extent that such gain
does not exceed the accrued market discount on such Note. Alternatively, a U.S.
Holder of a Market Discount Note may elect to include market discount in income
currently over the life of the Market Discount Note. Such an election applies to
all debt instruments with market discount acquired by the electing U.S. Holder
on or after the first day of the first taxable year to which the election
applies and may not be revoked without the consent of the IRS.
 
    Market discount accrues on a straight-line basis unless the U.S. Holder
elects to accrue such discount on a constant yield to maturity basis. Such an
election is applicable only to the Market Discount Note with respect to which it
is made and is irrevocable. A U.S. Holder of a Market Discount Note that does
not elect to include market discount in income currently generally will be
required to defer deductions for interest on borrowings allocable to such Note
in an amount not exceeding the accrued market discount on such Note until the
maturity or disposition of such Note.
 
    The market discount rules do not apply to a Short-Term Note.
 
ELECTION TO TREAT ALL INTEREST AS ORIGINAL ISSUE DISCOUNT
 
    Any U.S. Holder may elect to include in gross income all interest that
accrues on a Note using the constant yield method described above under the
heading "Original Issue Discount--General," with the modifications described
below. For purposes of this election, interest includes stated interest, OID, DE
MINIMIS OID, market discount, acquisition discount, DE MINIMIS market discount
and unstated interest, as adjusted by any amortizable bond premium or
acquisition premium.
 
    In applying the constant yield method to a Note with respect to which this
election has been made, the issue price of the Note will equal the electing U.S.
Holder's adjusted basis in the Note immediately after its acquisition, the issue
date of the Note will be the date of its acquisition by the electing U.S.
Holder, and no payments on the Note will be treated as payments of qualified
stated interest. This election is generally applicable only to the Note with
respect to which it is made and may not be revoked without the consent of the
IRS. If this election is made with respect to a Note with amortizable bond
premium, the electing U.S. Holder will be deemed to have elected to apply
amortizable bond premium against interest with respect to all debt instruments
with amortizable bond premium (other than debt instruments the interest on which
is excludible from gross income) held by such electing U.S. Holder as of the
beginning of the taxable year in which the election is made or any debt
instruments acquired thereafter. The deemed election with respect to amortizable
bond premium may not be revoked without the consent of the IRS.
 
    If the election described above to apply the constant yield method to all
interest on a Note is made with respect to a Market Discount Note, as defined
above, then the electing U.S. Holder will be treated as having made the election
discussed above under "Notes Purchased at a Market Discount" to include market
discount in income currently over the life of all debt instruments held or
thereafter acquired by such U.S. Holder.
 
                                      S-18
<PAGE>
PURCHASE, SALE AND RETIREMENT OF THE NOTES
 
    GENERAL.  A U.S. Holder's tax basis in a Note generally will equal its U.S.
dollar cost (which, in the case of a Note purchased with a Foreign Currency,
will be the U.S. dollar value of the purchase price on the date of purchase),
increased by the amount of any OID and market discount (or acquisition discount,
in the case of a Short-Term Note) includible in the U.S. Holder's income with
respect to the Note and the amount, if any, of income attributable to DE MINIMIS
OID includible in the U.S. Holder's income with respect to the Note, and reduced
by the sum of (i) the amount of any payments that are not qualified stated
interest payments, and (ii) the amount of any amortizable bond premium applied
to reduce interest on the Note. A U.S. Holder generally will recognize gain or
loss on the sale or retirement of a Note equal to the difference between the
amount realized on the sale or retirement and the U.S. Holder's tax basis in the
Note. The amount realized on a sale or retirement for an amount in Foreign
Currency will be the U.S. dollar value of such amount on the date of sale or
retirement. Except to the extent described above under "Original Issue
Discount--Short Term Notes" or "Market Discount" or below under "Foreign
Currency Notes--Exchange Gain or Loss," and except to the extent attributable to
accrued but unpaid interest between interest payment dates (which is excluded
from the amount realized, but includible as interest in accordance with the U.S.
Holder's method of accounting), gain or loss recognized on the sale or
retirement of a Note will be capital gain or loss and will be long-term capital
gain or loss if the Note was held for more than one year. Prospective investors
should consult their tax advisors regarding the treatment of capital gains (for
which an individual may be entitled to a 28% or 20% maximum Federal tax rate if
the Note has been held for more than one year or more than eighteen months,
respectively) and losses (the deductibility of which is subject to limitations).
 
FOREIGN CURRENCY NOTES
 
    INTEREST PAYMENTS.  If an interest payment is denominated in or determined
by reference to a Foreign Currency, the amount of income recognized by a cash
basis U.S. Holder will be the U.S. dollar value of the interest payment, based
on the exchange rate in effect on the date of receipt, regardless of whether the
payment is in fact converted into U.S. dollars. Accrual basis U.S. Holders may
determine the amount of income recognized with respect to such interest payment
in accordance with either of two methods. Under the first method, the amount of
income recognized will be based on the average exchange rate in effect during
the interest accrual period (or, with respect to an accrual period that spans
two taxable years, the partial period within the taxable year). Upon receipt of
an interest payment (including a payment attributable to accrued but unpaid
interest upon the sale or retirement of a Note) determined by reference to a
Foreign Currency, an accrual basis U.S. Holder will recognize ordinary income or
loss measured by the difference between such average exchange rate and the
exchange rate in effect on the date of receipt, regardless of whether the
payment is in fact converted into U.S. dollars. Under the second method, an
accrual basis U.S. Holder may elect to translate interest income into U.S.
dollars at the spot exchange rate in effect on the last day of the accrual
period or, in the case of an accrual period that spans two taxable years, at the
exchange rate in effect on the last day of the partial period within the taxable
year. Additionally, if a payment of interest is actually received within 5
business days of the last day of the accrual period or taxable year, an accrual
basis U.S. Holder applying the second method may instead translate such accrued
interest into U.S. dollars at the spot exchange rate in effect on the day of
actual receipt (in which case no exchange gain or loss will result). Any
election to apply the second method will apply to all debt instruments held by
the U.S. Holder at the beginning of the first taxable year to which the election
applies or thereafter acquired by the U.S. Holder and may not be revoked without
the consent of the IRS.
 
    EXCHANGE OF AMOUNTS IN OTHER THAN U.S. DOLLARS.  Foreign Currency received
as interest on a Note or on the sale or retirement of a Note will have a tax
basis equal to its U.S. dollar value at the time such interest is received or at
the time of such sale or retirement, as the case may be. Foreign Currency that
is
 
                                      S-19
<PAGE>
purchased will generally have a tax basis equal to the U.S. dollar value of the
Foreign Currency on the date of purchase. Any gain or loss recognized on a sale
or other disposition of a Foreign Currency (including its use to purchase Notes
or upon exchange for U.S. dollars) will be ordinary income or loss.
 
    FOREIGN CURRENCY DISCOUNT NOTES.  OID for any accrual period on a Discount
Note that is denominated in a Foreign Currency will be determined in the Foreign
Currency and then translated into U.S. dollars in the same manner as stated
interest accrued by an accrual basis U.S. Holder. Upon receipt of an amount
attributable to original issue discount (whether in connection with a payment of
interest or the sale or retirement of a Note), a U.S. Holder may recognize
ordinary income or loss.
 
    AMORTIZABLE BOND PREMIUM.  In the case of a Note that is denominated in a
Foreign Currency, bond premium will be computed in units of Foreign Currency,
and amortizable bond premium will reduce interest income in units of the Foreign
Currency. At the time amortized bond premium offsets interest income, a U.S.
Holder may realize ordinary income or loss, measured by the difference between
exchange rates at that time and at the time of the acquisition of the Notes.
 
    MARKET DISCOUNT.  Market discount is determined in units of the Foreign
Currency. Accrued market discount that is required to be taken into account on
the maturity or upon disposition of a Note is translated into U.S. dollars at
the exchange rate on the maturity or the disposition date, as the case may be
(and no part is treated as exchange gain or loss). Accrued market discount
currently includible in income by an electing U.S. Holder is translated into
U.S. dollars at the average exchange rate for the accrual period (or the partial
accrual period during which the U.S. Holder held the Note), and exchange gain or
loss is determined on maturity or disposition of the Note (as the case may be)
in the manner described above under "Foreign Currency Notes--Interest Payments"
with respect to the computation of exchange gain or loss on the receipt of
accrued interest by an accrual method holder.
 
    EXCHANGE GAIN OR LOSS.  Gain or loss recognized by a U.S. Holder on the sale
or retirement of a Note that is attributable to changes in exchange rates will
be treated as ordinary income or loss. However, exchange gain or loss is taken
into account only to the extent of total gain or loss realized on the
transaction.
 
INDEXED NOTES
 
    The applicable Pricing Supplement will contain a discussion of any special
United States Federal income tax rules with respect to currency indexed notes or
other indexed Notes.
 
                                NON-U.S. HOLDERS
 
    Subject to the discussion of backup withholding below, payments of principal
(and premium, if any) and interest (including OID) by the Company or any agent
of the Company (acting in its capacity as such) to a beneficial owner who is,
for United States Federal income tax purposes, (i) a nonresident alien
individual, (ii) a foreign corporation, (iii) a nonresident alien fiduciary of a
foreign estate or trust or (iv) a foreign partnership one or more of the members
of which is a nonresident alien individual, a foreign corporation or a
nonresident alien fiduciary of a foreign estate or trust (a "Non-U.S. Holder")
will not be subject to U.S. Federal withholding tax, PROVIDED, in the case of
interest (including OID), that (i) the Non-U.S. Holder does not actually or
constructively own 10% or more of the total combined voting power of all classes
of stock of the Company entitled to vote, (ii) the Non-U.S. Holder is not a
controlled foreign corporation for U.S. tax purposes that is related to the
Company (directly or indirectly) through stock ownership, and (iii) either (A)
the Non-U.S. Holder certifies to the Company or its agent under penalties of
perjury that it is not a United States person and provides its name and address
or (B) a securities clearing organization, bank or other financial institution
that holds customers' securities in the ordinary course of its trade or business
(a "financial institution") and holds the Note certifies to the Company or its
agent under penalties of perjury that such statement has been received from the
Non-U.S. Holder by it or
 
                                      S-20
<PAGE>
by another financial institution and furnishes the payor with a copy thereof. A
Non-U.S. Holder of a Note providing for payments of contingent interest within
the meaning of Section 871(h) of the Code, will not, however, be exempt from
U.S. Federal withholding tax with respect to payments of such contingent
interest, in which case the applicable Pricing Supplement will contain a
description of U.S. Federal withholding tax consequences to Non-U.S. Holders of
a purchase of a Note. With respect to Notes held by a foreign partnership, under
current law, the Form W-8 may be provided by the foreign partnership. However,
for interest (including OID) and disposition proceeds paid with respect to a
Note after December 31, 1998, unless the foreign partnership has entered into a
withholding agreement with the IRS, a foreign partnership will be required, in
addition to providing an intermediary Form W-8, to attach an appropriate
certification by each partner. Prospective investors, including foreign
partnerships and their partners, should consult their tax advisors regarding
possible additional reporting requirements.
 
    If a Non-U.S. Holder is engaged in a trade or business in the United States
and interest (including OID) on the Note (or gain realized on its sale or
retirement) is effectively connected with the conduct of such trade or business,
the Non-U.S. Holder, although exempt from the withholding tax discussed in the
preceding paragraph, generally will be subject to U.S. Federal income tax on
such effectively connected income in the same manner as if it were a U.S.
Holder. In addition, if the Non-U.S. Holder is a foreign corporation, it may be
subject to a branch profits tax equal to 30% (unless reduced or eliminated by an
applicable treaty) of its effectively connected earnings and profits for the
taxable year, subject to certain adjustments. For purposes of the branch profits
tax, interest (including OID) on a Note will be included in the earnings and
profits of such holder if such interest (or OID) is effectively connected with
the conduct by such holder of a trade or business in the United States. In lieu
of the certificate described in the preceding paragraph, such a holder must
provide the payor with a properly executed IRS Form 4224 (or, in the case of
payments made after December 31, 1998, Form W-8) to claim an exemption from U.S.
Federal withholding tax.
 
    Any capital gain, market discount or exchange gain realized on the sale,
exchange, retirement or other disposition of a Note by a Non-U.S. Holder will
not be subject to U.S. Federal income or withholding taxes if (i) such gain is
not effectively connected with a U.S. trade or business of the Non-U.S. Holder
and (ii) in the case of an individual, such Non-U.S. Holder (A) is not present
in the United States for 183 days or more in the taxable year of the sale,
exchange, retirement or other disposition or (B) does not have a tax home (as
defined in Section 911(d)(3) of the Code) in the United States in the taxable
year of the sale, exchange, retirement or other disposition and the gain is not
attributable to an office or other fixed place of business maintained by such
individual in the United States.
 
    Notes held by an individual who is neither a citizen nor a resident of the
United States for U.S. Federal estate tax purposes at the time of such
individual's death will not be subject to U.S. Federal estate tax, provided that
the income from such Notes was not or would not have been effectively connected
with a U.S. trade or business of such individual and that such individual
qualified for the exemption from U.S. Federal withholding tax (without regard to
the certification requirements) described above.
 
    PURCHASERS OF NOTES THAT ARE NON-U.S. HOLDERS SHOULD CONSULT THEIR OWN TAX
ADVISORS WITH RESPECT TO THE POSSIBLE APPLICABILITY OF UNITED STATES WITHHOLDING
AND OTHER TAXES UPON INCOME REALIZED IN RESPECT OF THE NOTES.
 
                  INFORMATION REPORTING AND BACKUP WITHHOLDING
 
    For each calendar year in which the Notes are outstanding, the Company is
required to provide the IRS with certain information, including the holder's
name, address and taxpayer identification number (either the holder's Social
Security number or its employer identification number, as the case may be), the
aggregate amount of principal and interest paid (including OID, if any) to that
holder during the calendar year and the amount of tax withheld, if any. This
obligation, however, does not apply with respect to
 
                                      S-21
<PAGE>
certain U.S. Holders, including corporations, tax-exempt organizations,
qualified pension and profit sharing trusts and individual retirement accounts.
 
    In the event that a U.S. Holder subject to the reporting requirements
described above fails to supply its correct taxpayer identification number in
the manner required by applicable law or underreports its tax liability, the
Company, its agents or paying agents or a broker may be required to "backup"
withhold a tax equal to 31% of each payment of interest (including OID) and
principal (and premium, if any) on the Notes. This backup withholding is not an
additional tax and may be credited against the U.S. Holder's U.S. Federal income
tax liability, PROVIDED that the required information is furnished to the IRS.
 
    Under current Treasury Regulations, backup withholding and information
reporting will not apply to payments made by the Company or any agent thereof
(in its capacity as such) to a Non-U.S. Holder of a Note if such holder has
provided the required certification that it is not a United States person as set
forth in clause (iii) in the first paragraph under "Non-U.S. Holders" above, or
has otherwise established an exemption (PROVIDED that neither the Company nor
its agent has actual knowledge that the holder is a United States person or that
the conditions of any exemption are not in fact satisfied).
 
    Payment of the proceeds from the sale of a Note to or through a foreign
office of a broker will not be subject to information reporting or backup
withholding, except that if the broker is a United States person, a controlled
foreign corporation for United States tax purposes, a foreign person 50 percent
or more of whose gross income from all sources for the three-year period ending
with the close of its taxable year preceding the payment was effectively
connected with a U.S. trade or business or (in the case of payments made after
December 31, 1998) a foreign partnership with certain connections to the United
States, then information reporting may apply to such payments. Payment of the
proceeds from a sale of a Note to or through the U.S. office of a broker is
subject to information reporting and backup withholding unless the holder or
beneficial owner certifies as to its taxpayer identification number or otherwise
establishes an exemption from information reporting and backup withholding.
 
                              PLAN OF DISTRIBUTION
 
    Under the terms of an Agency Agreement between the Company and the Agents,
the Notes are being offered on a continuing basis by the Company through the
Agents, who will agree to use their reasonable efforts to solicit purchases of
the Notes. The Company will pay any Agent a commission, depending upon maturity,
of .150% to .750% of the principal amount of the Notes sold through such Agent.
Commissions on Notes with a Stated Maturity of greater than 30 years will be
negotiated at the time of sale. The Company may also sell Notes to any Agent, as
principal, at a discount to be specified in the applicable Pricing Supplement,
for resale to one or more investors at varying prices related to prevailing
market prices at the time of resale, or, if set forth in the applicable Pricing
Supplement, at a fixed public offering price, to be determined by such Agent. In
addition, an Agent may offer Notes purchased by it as principal to other
dealers. Notes sold by an Agent to a dealer may be sold at a discount not to
exceed the discount received by such Agent from the Company. After any initial
public offering of Notes to be resold to purchasers at a fixed public offering
price, the public offering price and any concession or discount may be changed.
The Company will agree to reimburse the Agents for certain expenses. The Company
may also offer and sell Notes directly to purchasers on its own behalf from time
to time.
 
    The Company will have the sole right to accept offers to purchase Notes and
may reject any proposed purchase of Notes in whole or in part. Each Agent will
have the right, in its discretion reasonably exercised, to reject any offer to
purchase Notes received by it in whole or in part. Payment of the purchase price
of Notes will be required to be made in funds immediately available in The City
of New York.
 
    The Agents may be deemed to be "underwriters" within the meaning of the
Securities Act of 1933 (the "Securities Act"). The Company has agreed to
indemnify the Agents against certain liabilities, including liabilities under
the Securities Act, or to contribute to payments the Agents may be required to
make in respect thereof.
 
                                      S-22
<PAGE>
    Unless otherwise specified in the applicable Pricing Supplement, the Notes
will not be listed on any securities exchange and will not have an established
trading market when issued. Each Agent may make a market in the Notes, but such
Agent is not obligated to do so and may discontinue market-making at any time
without notice. There can be no assurance that the Notes offered by this
Prospectus Supplement will be sold or that there will be a secondary market for
the Notes.
 
    In connection with the offering of the Notes, the Agents may engage in
transactions that stabilize, maintain or otherwise affect the market price of
the Notes. Such transactions may include stabilization transactions, pursuant to
which such persons may bid for or purchase Notes for the purpose of stabilizing
their market price. The Agents also may create a short position for the account
of the Agents by selling more Notes in connection with any offering of the Notes
than they are committed to purchase from the Company, and in such case may
purchase Notes in the open market following completion of the offering of the
Notes to cover such short position. Finally, the Agents may reclaim selling
concessions or discounts allowed for distributing Notes, if Agents repurchase
previously distributed Notes in covering or stabilizing transactions or
otherwise. Any of the transactions described in this paragraph may result in the
maintenance of the price of the Notes at a level above that which might
otherwise prevail in the open market. None of the transactions described in this
paragraph is required, and if such transactions are undertaken, they may be
discontinued at any time.
 
    The Company may replace the Agents or appoint additional agents in
connection with the offering of the Notes from time to time.
 
    The Agents may engage in transactions with and perform services for the
Company and certain of its affiliates in the ordinary course of business.
 
    If holders of Notes purchased directly from the Company encounter
difficulties in disposing of their Notes at then current market rates, the
Company will give consideration to offers to sell such Notes to the Company on
terms reflecting current market conditions at the time of repurchase. However,
any such repurchases will be made in the Company's sole discretion, and the
Company makes no commitment to repurchase Notes from any purchaser at any time.
 
    In addition to offering Notes through the Agents as described herein, the
Company may sell other Securities offered by the accompanying Prospectus. Any
such Securities so offered and sold will reduce correspondingly the maximum
aggregate principal amount of Notes that may be offered by this Prospectus
Supplement.
 
                                 LEGAL OPINIONS
 
    The validity of the Notes offered hereby will be passed upon for the Company
by John E. Hickey, Vice President and Assistant General Counsel of the Company,
and for the Agents by Davis Polk & Wardwell, New York, New York.
 
                                      S-23
<PAGE>
PROSPECTUS
 
                  INTERNATIONAL BUSINESS MACHINES CORPORATION
                                DEBT SECURITIES
                                PREFERRED STOCK
                               DEPOSITARY SHARES
                                 CAPITAL STOCK
                                    WARRANTS
 
    International Business Machines Corporation (the "Company") intends from
time to time to issue, in one or more series, up to an aggregate of
$4,300,000,000 of its debt securities (the "Debt Securities"), which may be
either senior (the "Senior Debt Securities") or subordinated (the "Subordinated
Debt Securities") in priority of payment, preferred stock (the "Preferred
Stock"), depositary shares (the "Depositary Shares") representing a fractional
interest in a share of Preferred Stock, Capital Stock (the "Capital Stock") and
warrants to purchase Debt Securities, Preferred Stock or Capital Stock (the
"Warrants") (the Debt Securities, Preferred Stock, Depositary Shares, Capital
Stock and Warrants being collectively referred to herein as the "Securities").
When a particular series of Securities is offered, a supplement to this
Prospectus (the "Prospectus Supplement") will be delivered with the Prospectus.
For Debt Securities, the Prospectus Supplement will set forth with respect to
such series: whether it is a series of Senior Debt Securities or Subordinated
Debt Securities; the designation and principal amount offered; the rate (or
method of calculation) and time of payment of interest, if any; the authorized
denominations; the maturity or maturities; the terms for a sinking, purchase or
analogous fund, if any; the terms for redemption or early repayment, if any; the
currency or currencies or currency unit or currency units in which principal,
premium, if any, or interest, if any, is payable; the purchase price and other
terms of the offering; and any listing on a securities exchange. For Preferred
Stock and Depositary Shares, the Prospectus Supplement will set forth with
respect to such series: the designation; aggregate number of shares; liquidation
preference per share; dividend rate (or method of calculation); dates on which
dividends shall be payable, whether dividends shall be cumulative, noncumulative
or partially cumulative and dates from which dividends shall accrue; any
redemption or sinking fund provisions; the purchase price and other terms of the
offering; any listing on a securities exchange; and if Depositary Shares will be
offered, the fraction of a share of Preferred Stock represented by each
Depositary Share. For Capital Stock, the Prospectus Supplement will set forth
with respect to such series: the number of shares; and the purchase price and
other terms of the offering. For Warrants, the Prospectus Supplement will set
forth with respect to such series: the number and terms thereof; the designation
and the number of securities issuable upon exercise; the purchase price and
other terms of the offering; the exercise price; and, where applicable, the
duration and detachability thereof.
                            ------------------------
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.
                            ------------------------
 
    The Securities may be sold (i) through underwriting syndicates represented
by managing underwriters or by underwriters without a syndicate; (ii) through
agents designated from time to time; or (iii) directly. The names of any
underwriters or agents of the Company involved in the sale of the Securities in
respect of which this Prospectus is being delivered and any applicable
commissions or discounts are set forth in the Prospectus Supplement. The net
proceeds to the Company from such sale are also set forth in the Prospectus
Supplement.
 
               THE DATE OF THIS PROSPECTUS IS DECEMBER 10, 1997.
<PAGE>
                             AVAILABLE INFORMATION
 
    The Company is subject to the informational requirements of the Securities
Exchange Act of 1934 (the "Exchange Act") and, in accordance therewith, files
reports, proxy statements and other information with the Securities and Exchange
Commission (the "Commission"). Reports, proxy statements and other information
filed by the Company may be inspected and copied at the public reference
facilities maintained by the Commission at 450 Fifth Street, N.W., Room 1024,
Washington, D.C. 20549, and at the Commission's regional offices located at 7
World Trade Center, 13th Floor, New York, New York 10048, and Citicorp Center,
500 West Madison Street, Suite 1400, Chicago, Illinois 60661; and copies of such
material may be obtained from the Public Reference Section of the Commission,
Washington, D.C. 20549, at prescribed rates. Please call the Commission at
1-800-SEC-0330 for further information on the operation of the public reference
room. In addition, the Commission maintains a Website that contains reports,
proxy and information statements and other information regarding registrants
that file electronically with the Commission ("http://www.sec.gov"). Such
reports, proxy statements and other information may also be inspected at the
offices of the New York Stock Exchange, Inc., 20 Broad Street, 7th Floor, New
York, New York, the Chicago Stock Exchange, Incorporated, 440 South LaSalle
Street, Suite 518, Chicago, Illinois and the Pacific Exchange Inc., 115 Sansome
Street, 2nd Floor, San Francisco, California.
 
                     INFORMATION INCORPORATED BY REFERENCE
 
    The Annual Report of the Company on Form 10-K for the fiscal year ended
December 31, 1996, the Quarterly Reports of the Company on Form 10-Q for the
quarters ended March 31, 1997, June 30, 1997 and September 30, 1997, and the
Current Report of the Company on Form 8-K dated January 21, 1997, January 29,
1997, April 23, 1997, May 7, 1997, July 21, 1997, August 1, 1997, and October
20, 1997 filed by the Company under Exchange Act file number 1-2360, are
incorporated herein by reference. All documents filed by the Company pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date hereof and
prior to the termination of the offering of the Securities offered hereby shall
be deemed to be incorporated herein by reference.
 
    The Company will cause to be furnished without charge to each person to whom
this Prospectus is delivered, upon the written or oral request of such person, a
copy of any or all the documents described above, other than exhibits to such
documents. Requests should be addressed to: First Chicago Trust Company of New
York, Mail Suite 4688, P.O. Box 2530, Jersey City, New Jersey, 07303-2530;
telephone: (201) 324-0405.
 
                                       2
<PAGE>
                                  THE COMPANY
 
    The Company develops, manufactures and sells advanced information processing
products, including computers and microelectronic technology, software,
networking systems and information technology-related services. The Company
offers value worldwide through its North America, Europe/Middle East/ Africa,
Latin America, Asia/Pacific, Global Services and Worldwide Client Server
Computing business units, by providing comprehensive and competitive product
choices.
 
    The Company's principal executive offices are located at Armonk, New York
10504, and its telephone number is (914) 499-1900.
 
                                USE OF PROCEEDS
 
    Unless otherwise indicated in the applicable Prospectus Supplement, the
Company intends to use the net proceeds from the sale of the Securities for
general corporate purposes.
 
    The Company expects that it will, on a recurring basis, engage in additional
financings in character and amount to be determined as the need arises.
 
 RATIOS OF EARNINGS TO FIXED CHARGES AND EARNINGS TO COMBINED FIXED CHARGES AND
                           PREFERRED STOCK DIVIDENDS
 
    The ratio of earnings to fixed charges has been computed by dividing
earnings before income taxes (which excludes the cumulative and transition
effects of accounting changes) and fixed charges by fixed charges. The ratio of
earnings to combined fixed charges and preferred stock dividends has been
computed by dividing earnings before income taxes (which excludes the cumulative
and transition effects of accounting changes) and fixed charges by the sum of
fixed charges and dividends on preferred stock. For purposes of calculating the
ratio of earnings to combined fixed charges and preferred stock dividends, the
preferred stock dividend requirements were assumed to be equal to the pre-tax
earnings that would be required to cover such dividend requirements based on the
Company's effective income tax rates for the respective periods. "Fixed charges"
consist of interest on debt and that portion of rental expense deemed to be
representative of interest.
<TABLE>
<CAPTION>
                                                                    NINE MONTHS ENDED
                                                                      SEPTEMBER 30,               YEAR ENDED DECEMBER 31,
                                                                 ------------------------  -------------------------------------
                                                                    1997         1996         1996         1995         1994
                                                                    -----        -----        -----        -----        -----
<S>                                                              <C>          <C>          <C>          <C>          <C>
Ratio of earnings to fixed charges.............................         5.1          4.9          5.3          5.0          3.1
Ratio of earnings to combined fixed charges and preferred stock
  dividends....................................................         5.0          4.8          5.3          4.9          2.9
 
<CAPTION>
 
                                                                    1993         1992
                                                                    -----        -----
<S>                                                              <C>          <C>
Ratio of earnings to fixed charges.............................          (a)          (a)
Ratio of earnings to combined fixed charges and preferred stock
  dividends....................................................          (a)          (a)
</TABLE>
 
- ------------------------
 
 (a) No ratios are shown for these periods as earnings were insufficient to
     cover fixed charges and, in 1993, combined fixed charges and preferred
     stock dividends. As a result of the net loss incurred for the year ended
     December 31, 1993, earnings were inadequate to cover fixed charges and
     combined fixed charges and preferred stock dividends by $8,478 million and
     $8,525 million, respectively. As a result of the net loss incurred for the
     year ended December 31, 1992, earnings were inadequate to cover fixed
     charges by $8,962 million.
 
                       DESCRIPTION OF THE DEBT SECURITIES
 
    The Debt Securities will constitute either Senior Debt Securities or
Subordinated Debt Securities. The Senior Debt Securities are to be issued under
an Indenture (the "Senior Indenture") dated as of October 1, 1993, between the
Company and The Chase Manhattan Bank (National Association), as Trustee (the
"Senior Trustee"), as supplemented by the First Supplemental Indenture thereto
dated as of December 15, 1995, filed as an exhibit to the Registration Statement
of which this Prospectus is a part. The
 
                                       3
<PAGE>
Subordinated Debt Securities will be issued under an Indenture (the
"Subordinated Indenture") to be entered into between the Company and the trustee
named in the applicable Prospectus Supplement (the "Subordinated Trustee"), a
form of which is filed as an exhibit to the Registration Statement of which this
Prospectus is a part. The Senior Indenture and the Subordinated Indentures are
collectively referred to herein as the "Indentures". The following statements
are subject to the detailed provisions of the applicable Indenture; whenever
particular provisions of the applicable Indenture are referred to, such
provisions are incorporated by reference as a part of the statement made, and
the statement is qualified in its entirety by such reference. Whenever a defined
term is referred to and not defined under "Description of the Debt Securities",
the definition thereof is contained in the applicable Indenture. Cross
references to Sections of the Indentures relate to both the Senior Indenture and
the Subordinated Indenture, unless otherwise indicated.
 
GENERAL
 
    Each Indenture provides for the issuance from time to time of Debt
Securities in an unlimited aggregate principal amount and an unlimited number of
series.
 
    Reference is made to the applicable Prospectus Supplement for the following
terms of the series of Debt Securities offered thereby: (i) the title of the
Debt Securities of such series; (ii) any limit upon the aggregate principal
amount of such Debt Securities; (iii) the date or dates on which such Debt
Securities will mature or the method of determination of such date or dates;
(iv) the rate or rates, or the method of determination thereof, at which such
Debt Securities will bear interest, if any, the date or dates from which such
interest will accrue, the date or dates such interest will be payable and, for
Registered Debt Securities, the Regular Record Dates; (v) the place or places
where the principal of, and premium and interest, if any, on, such Debt
Securities will be payable; (vi) the periods, prices and terms and conditions
upon which any such Debt Security may be redeemed, in whole or in part, at the
option of the Company; (vii) any terms for redemption or repurchase pursuant to
any sinking fund or analogous provision or at the option of a Holder; (viii) any
terms for conversion of the Debt Securities into Preferred Stock, Depositary
Shares or Capital Stock or for exchange of the Debt Securities for the
securities of any other corporation at the option of a holder; (ix) any terms
for the attachment to such Debt Securities of warrants, options or other rights
to purchase or sell Debt Securities, Preferred Stock, Depositary Shares or
Capital Stock; (x) if other than the principal amount thereof, the portion of
the principal amount of such Debt Securities that will be payable upon
acceleration of maturity (Debt Securities subject to such provisions being
referred to as "Original Issue Discount Securities"); (xi) any deletions or
modifications of, or additions to, the Events of Default or covenants of the
Company under the Indenture with respect to such Debt Securities (including
whether the covenants described below under "Certain Covenants of the Company"
will not apply to such Debt Securities); (xii) if other than U.S. dollars, the
currency, currencies or currency unit or units in which such Debt Securities
will be denominated and in which the principal of, and premium and interest, if
any, on, such Securities will be payable; (xiii) whether, and the terms and
conditions on which, the Company or a Holder may elect that, or the other
circumstances under which, payment of principal of, or premium or interest, if
any, on, such Debt Securities is to be made in a currency or currencies or
currency unit or units other than that in which such Debt Securities are
denominated; (xiv) any matter of determining the amount of principal of, or
premium or interest, if any, on, any such Debt Securities to be determined with
reference to an index based on a currency or currency unit, or units other than
that in which such Debt Securities are stated to be payable or an index based on
any other method; (xv) whether such Debt Securities will be issued in fully
registered form without coupons ("Registered Debt Securities") or in bearer form
with or without coupons ("Bearer Debt Securities"), or any combination thereof,
whether such Debt Securities will be issued in the form of one or more global
securities (each a "Global Debt Security") and whether such Debt Securities are
to be issuable in temporary global form or definitive global form; (xvi) if such
Debt Securities are to be issued upon the exercise of warrants, the time, manner
and place for such Debt Securities to be authenticated and delivered; (xvii)
whether and under what circumstances the Company will pay additional amounts to
any holder of such Debt Securities who is not a
 
                                       4
<PAGE>
United States person (as defined below under "Temporary Global Securities") in
respect of any tax, assessment or governmental charge withheld or deducted and,
if so, whether and on what terms the Company will have the option to redeem such
Debt Securities rather than pay any additional amounts; and (xviii) any other
terms of any of such Debt Securities not inconsistent with the Indenture.
(SECTION 202 AND 301)
 
    Unless otherwise specified in the applicable Prospectus Supplement, (x) the
Debt Securities will be Registered Debt Securities and (y) Debt Securities
denominated in U.S. dollars will be issued, in the case of Registered Debt
Securities, in denominations of $1,000 or an integral multiple thereof and, in
the case of Bearer Debt Securities, in denominations of $5,000. Debt Securities
may bear legends required by United States Federal tax law and regulations.
(SECTION 401)
 
    If any of the Debt Securities are sold for any foreign currency or currency
unit or if the principal of, or premium or interest, if any, on, any of the Debt
Securities is payable in any foreign currency or currency unit, the
restrictions, elections, tax consequences, specific terms and other information
with respect to such Debt Securities and such foreign currency or currency unit
will be set forth in the Prospectus Supplement relating thereto.
 
EXCHANGE, REGISTRATION AND TRANSFER
 
    Registered Debt Securities of any series will be exchangeable for other
Registered Debt Securities of the same series and of a like aggregate principal
amount and tenor of different authorized denominations. If Debt Securities of
any series are issuable as both Registered Debt Securities and Bearer Debt
Securities, the Bearer Debt Securities of such series (with all unmatured
coupons, except as provided below, and all matured coupons in default) will be
exchangeable for Registered Debt Securities of the same series of any authorized
denominations and of a like aggregate principal amount and tenor. If a Bearer
Debt Security with coupons appertaining thereto is surrendered in exchange for a
Registered Debt Security after a Regular Record Date or Special Record Date and
before the relevant date for payment of interest, such Bearer Debt Security
shall be surrendered without the coupon relating to such date for payment of
interest and interest will not be payable on such date in respect of the
Registered Debt Security issued in exchange for such Bearer Debt Security, but
will be payable only to the holder of such coupon when due in accordance with
the terms thereof and of the Indenture. Bearer Debt Securities will not be
issued in exchange for Registered Debt Securities (unless otherwise specified in
the applicable Prospectus Supplement and permitted by applicable rules and
regulations). No service charge will be made for any transfer or exchange of the
Debt Securities, but the Company may require payment of a sum sufficient to
cover any tax or other governmental charge in connection therewith. (SECTION
404)
 
    Debt Securities may be presented for exchange as provided above, and
Registered Debt Securities (other than U.S. Book-Entry Debt Securities (as
defined below under "Definitive Global Securities--U.S. BOOK-ENTRY SECURITIES"))
may be presented for registration of transfer (with the form of transfer
endorsed thereon duly executed), at the office of the Security Registrar or at
the office of any additional transfer agent designated by the Company for such
purpose with respect to any series of Debt Securities and referred to in the
applicable Prospectus Supplement. (SECTIONS 404 AND 1102) The Chase Manhattan
Bank located at 450 West 33rd Street, New York, New York 10001, is the Security
Registrar under the Senior Indenture, and the Security Registrar under the
Subordinated Indenture will be designated in the applicable Prospectus
Supplement. (SECTION 404) The Company may at any time designate, or rescind the
designation of, the Security Registrar or any additional transfer agent or
approve a change in the location through which the Security Registrar or any
such transfer agent acts, except that, if Debt Securities of a series are
issuable solely as Registered Debt Securities, the Company will be required to
maintain a transfer agent in each Place of Payment for such series and, if Debt
Securities of a series are issuable as both Registered Debt Securities and
Bearer Debt Securities or solely as Bearer Debt Securities, the Company will be
required to maintain (in addition to the Security Registrar) a transfer agent in
a Place of
 
                                       5
<PAGE>
Payment for such series located outside of the United States. The Company may at
any time designate additional transfer agents with respect to any series of Debt
Securities. (SECTION 1102)
 
    In the event of any redemption in part of any series of Debt Securities, the
Company will not be required to: (i) issue, register the transfer of, or
exchange, Debt Securities of any series during a period beginning at the opening
of business 15 Business Days before any selection of Debt Securities of that
series to be redeemed and ending at the close of business on (a) if Debt
Securities of the series are issuable only as Registered Debt Securities, the
day of mailing of the relevant notice of redemption and (b) if Debt Securities
of the series are issuable as Bearer Debt Securities, the day of the first
publication of the relevant notice of redemption or, if Debt Securities of the
series are also issuable as Registered Debt Securities and there is no
publication, the day of mailing of the relevant notice of redemption; (ii)
register the transfer of, or exchange, any Registered Debt Security selected for
redemption, in whole or in part, except the unredeemed portion of any Registered
Debt Security being redeemed in part; or (iii) exchange any Bearer Debt Security
selected for redemption, except to exchange such Bearer Debt Security for a
Registered Debt Security of that series and like tenor which is simultaneously
surrendered for redemption. (SECTION 404)
 
    For a discussion of restrictions on the exchange, registration and transfer
of Global Debt Securities, see "Global Securities" below.
 
PAYMENT AND PAYING AGENTS
 
    Payment of principal of, and premium and interest, if any, on, Registered
Debt Securities will be made in the designated currency or currency unit at the
office of such Paying Agent or Paying Agents as the Company may designate from
time to time. At the option of the Company, payment of any interest on
Registered Debt Securities may be made by check mailed to the address of the
person entitled thereto as such address shall appear in the Security Register.
Payment of any installment of interest on Registered Debt Securities will be
made to the person in whose name such Registered Debt Security is registered at
the close of business on the Regular Record Date for such interest. (SECTIONS
406 AND 410)
 
    Payment of principal of, and premium and interest, if any, on, Bearer Debt
Securities will be made in the designated currency unit at the offices of such
Paying Agents outside the United States as the Company may designate from time
to time. On the applicable payment date therefor payments of principal of, and
premium, if any, on, Bearer Debt Securities will be made against surrender of
such Debt Securities, and payment of interest on Bearer Debt Securities with
coupons appertaining thereto on any Interest Payment Date will be made only
against surrender of the coupon relating to such Interest Payment Date.
(SECTIONS 410 AND 1102) No payment with respect to any Bearer Debt Security will
be made at any office or agency of the Company in the United States or by check
mailed to any address in the United States or by transfer to any account
maintained with a bank located in the United States. Notwithstanding the
foregoing, payments of principal of, and premium and interest, if any, on,
Bearer Debt Securities denominated and payable in U.S. dollars will be made at
the office of the Company's Paying Agent in the Borough of Manhattan, The City
of New York, if (but only if) payment of the full amount thereof in U.S. dollars
at all offices or agencies outside the United States is illegal or effectively
precluded by exchange controls or other similar restrictions. (SECTION 1102)
 
    Unless otherwise indicated in the applicable Prospectus Supplement with
respect to Senior Debt Securities, The Chase Manhattan Bank located at 450 West
33rd Street, New York, New York 10001, will be designated as the Company's
Paying Agent for payments with respect to Senior Debt Securities that are
issuable solely as Registered Debt Securities and as the Company's Paying Agent
in the Borough of Manhattan, The City of New York for payments with respect to
Senior Debt Securities (subject to the limitations described above in the case
of Bearer Debt Securities) that are issuable solely as Bearer Debt Securities or
as both Registered Debt Securities and Bearer Debt Securities. With respect to
Subordinated Debt Securities, the Company's Paying Agent for payments with
respect to Subordinated Debt Securities
 
                                       6
<PAGE>
that are issuable solely as Registered Debt Securities and the Company's Paying
Agent in the Borough of Manhattan, The City of New York for payments with
respect to Subordinated Debt Securities (subject to the limitations described
above in the case of Bearer Debt Securities) that are issuable solely as Bearer
Debt Securities or as both Registrable Debt Securities and Bearer Debt
Securities will be designated in the applicable Prospectus Supplement. Any
Paying Agents outside the United States and any other Paying Agents in the
United States initially designated by the Company for the Debt Securities of a
series will be named in the applicable Prospectus Supplement. The Company may at
any time 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, if Debt Securities of a series are issuable solely as
Registered Debt Securities, the Company will be required to maintain a Paying
Agent in each Place of Payment for such series and, if Debt Securities of a
series are issuable as both Registered Debt Securities or Bearer Debt Securities
or solely as Bearer Debt Securities, the Company will be required to maintain
(i) a Paying Agent in the Borough of Manhattan, The City of New York for
payments with respect to any Registered Debt Securities of the series (and for
payments with respect to Bearer Debt Securities of the series in the
circumstances described above, but not otherwise), and (ii) a Paying Agent in a
Place of Payment located outside the United States where Debt Securities of such
series and any coupons appertaining thereto may be presented and surrendered for
payment; provided that if the Debt Securities of such series are listed on any
stock exchange located outside the United States and such stock exchange shall
so require, the Company will maintain a Paying Agent in any required city
located outside the United States for the Debt Securities of such series.
(SECTION 1102)
 
    All moneys deposited with a Trustee or Paying Agent, or then held by the
Company, in trust for the payment of principal of, and premium and interest, if
any, on, any Debt Security or coupon that remains unclaimed at the end of two
years after such principal, premium or interest shall have become due and
payable will be repaid to the Company, or, if then held by the Company,
discharged from such trust, and the holder of such Debt Security or coupon will
thereafter look only to the Company for payment thereof. (SECTION 1103)
 
GLOBAL SECURITIES
 
    The Debt Securities of a series may be issued in whole or in part as one or
more Global Debt Securities in either registered or bearer form and in either
temporary or definitive form. The Global Debt Security or Securities of a series
will be deposited with, or on behalf of, a depositary located in the United
States (a "U.S. Depositary") or a common depositary located outside the United
States (a "Common Depositary") identified in the Prospectus Supplement relating
to such series. All temporary or definitive Global Debt Securities in bearer
form will be deposited with a Common Depositary.
 
    The specific terms of the depositary arrangement with respect to any Debt
Securities of a series issued in global form will be described in the Prospectus
Supplement relating to such series. For purposes other than making payments on a
definitive Global Debt Security, the Company may treat a person having a
beneficial interest in such definitive Global Debt Security as the holder of
such principal amount of Outstanding Debt Securities represented by such
definitive Global Debt Security as shall be specified in a written statement of
the holder of such definitive Global Debt Security, or, in the case of a
definitive Global Debt Security in bearer form, of Euro-clear or Cedel Bank (as
defined below), which is delivered to the Trustee by such person. (SECTION 411)
None of the Company, the Trustee, any Paying Agent or the Security Registrar
will have any responsibility or liability for any aspect of the records relating
to or payments made on account of beneficial ownership interests in a Global
Debt Security or for maintaining, supervising or reviewing any records relating
to such beneficial ownership interests. (SECTION 411) The Company anticipates
that the following provisions will apply to all depositary arrangements with a
U.S. Depositary or Common Depositary.
 
                                       7
<PAGE>
TEMPORARY GLOBAL SECURITIES
 
    If so specified in the applicable Prospectus Supplement, all or any portion
of the Debt Securities of a series that are issuable as Bearer Debt Securities
initially will be represented by one or more temporary Global Debt Securities,
without interest coupons, to be deposited with a Common Depositary in London for
Morgan Guaranty Trust Company of New York, Brussels Office, as operator of the
Euro-clear System ("Euro-clear"), and Cedel Bank, societe anonyme ("Cedel Bank")
for credit to the respective accounts of the beneficial owners of such Debt
Securities (or to such other accounts as they may direct). On and after the
exchange date determined as provided in any such temporary Global Debt Security
and described in the applicable Prospectus Supplement, each such temporary
Global Debt Security will be exchangeable for definitive Debt Securities in
bearer form, registered form, definitive global bearer form or any combination
thereof, as specified in the applicable Prospectus Supplement. No Bearer Debt
Security (including a Debt Security in definitive global bearer form) delivered
in exchange for a portion of a temporary Global Debt Security will be mailed or
otherwise delivered to any location in the United States in connection with such
exchange. (SECTIONS 402 AND 403)
 
    Unless otherwise specified in the applicable Prospectus Supplement, interest
on any portion of a temporary Global Debt Security payable in respect of an
Interest Payment date occurring prior to the issuance of definitive Debt
Securities will be paid to each of Euro-clear and Cedel Bank with respect to the
portion of the temporary Global Debt Security held for its account upon delivery
to the applicable Trustee of a certificate signed by Euro-clear or Cedel Bank,
as the case may be, in the form required by the applicable Indenture dated no
earlier than such Interest Payment Date, which certificate must be based on
statements provided to it by its account holders who are beneficial owners of
interests in such temporary Global Debt Security to the effect that such portion
is not beneficially owned by a United States person, and has not been acquired
by or on behalf of a United States person or for offer to resell or for resale
to a United States person or any person inside the United States or, if a
beneficial interest in such portion has been acquired by a United States person,
(i) that such person is a financial institution, as defined in applicable
regulations promulgated under the Internal Revenue Code of 1986, as amended (the
"Code"), purchasing for its own account or has acquired such Debt Security
through a financial institution and (ii) that such Debt Securities are held by a
financial institution that has agreed in writing to comply with the requirements
of Section 165(j)(3)(A), (B) or (C) of the Code and the regulations thereunder
and that it did not purchase for offer to resell or for resale inside the United
States. Each of Euro-clear and Cedel Bank will in such circumstances credit the
interest received by it in respect of such temporary Global Debt Security to the
accounts of the beneficial owners thereof (or to such other accounts as they may
direct). (SECTION 403)
 
    As used herein, "United States person" means a citizen or resident of the
United States, a corporation, partnership or other entity created or organized
in or under the laws of the United States or an estate or trust the income of
which is subject to United States Federal income taxation regardless of its
source, and "United States" means the United States of America (including the
States and the District of Columbia), its territories, its possessions and other
areas subject to its jurisdiction.
 
DEFINITIVE GLOBAL SECURITIES
 
    BEARER SECURITIES.  If any Debt Securities of a series are issuable in
definitive global bearer form, the applicable Prospectus Supplement will
describe the circumstances, if any, under which beneficial owners of interests
in any such definitive global Bearer Debt Security may exchange such interests
for Debt Securities of such series and of like tenor and principal amount in any
authorized form and denomination. No Bearer Debt Security delivered in exchange
for a portion of a definitive Global Debt Security will be mailed or otherwise
delivered to any location in the United States in connection with such exchange.
(SECTION 404) Principal of, and premium and interest, if any, on, a definitive
global Bearer Debt Security will be payable in the manner described in the
applicable Prospectus Supplement.
 
                                       8
<PAGE>
    U.S. BOOK-ENTRY SECURITIES.  If Debt Securities of a series are to be
represented by a definitive global Registered Debt Security to be deposited with
or on behalf of a U.S. Depositary, such Debt Securities ("U.S. Book-Entry Debt
Securities") will be represented by a definitive Global Debt Security registered
in the name of the U.S. Depositary or its nominee. Upon the issuance of a
definitive Global Debt Security registered in the name of the U.S. Depositary,
the U.S. Depositary will credit, on its book-entry registration and transfer
system, the respective principal amounts of the U.S. Book-Entry Debt Securities
represented by such Global Debt Security to the accounts of institutions that
have accounts with such depositary or its nominee ("participants"). The accounts
to be credited shall be designated by the underwriters or agents for the sale of
such U.S. Book-Entry Debt Securities or by the Company, if such Debt Securities
are offered and sold directly by the Company. Ownership of U.S. Book-Entry Debt
Securities will be limited to participants or persons that may hold interests
through participants. Ownership of U.S. Book-Entry Debt Securities will be shown
on, and the transfer of that ownership will be effected only through, records
maintained by the U.S. Depositary or its nominee for the applicable definitive
Global Security or by participants or persons that hold through participants. So
long as the U.S. Depositary, or its nominee, is the registered owner of such
Global Debt Security, such depositary or such nominee, as the case may be, will
be considered the sole owner or holder of the U.S. Book-Entry Debt Securities
represented by such Global Debt Security for all purposes under the Indenture.
Payment of principal of, and premium and interest, if any, on, U.S. Book-Entry
Debt Securities will be made to the U.S. Depositary or its nominee, as the case
may be, as the registered owner or the holder of the Global Debt Security
representing such U.S. Book-Entry Debt Securities. Owners of U.S. Book-Entry
Debt Securities will not be entitled to have such Debt Securities registered in
their names in the Security Register, will not receive or be entitled to receive
physical delivery of such Debt Securities in definitive form and will not be
considered the owners or holders thereof under the Indenture. The laws of some
jurisdictions require that certain purchasers of securities take physical
delivery of such securities in definitive form. Such limits and such laws impair
the ability to purchase or transfer U.S. Book-Entry Debt Securities.
 
    The Company expects that the U.S. Depositary for U.S. Book-Entry Debt
Securities of a series, upon receipt of any payment of principal of, or premium
or interest, if any, on, the related definitive Global Debt Security, will
immediately credit participants' accounts with payments in amounts proportionate
to their respective beneficial interests in the principal amount of such Global
Debt Security as shown on the records of such Depositary. The Company also
expects that payments by participants to owners of beneficial interests in such
Global Debt Security held through such participants will be governed by standing
instructions and customary practices, as is now the case with securities held
for the accounts of customers in bearer form or registered in "street name", and
will be the responsibility of such participants.
 
CERTAIN COVENANTS OF THE COMPANY
 
    LIMITATION ON MERGER, CONSOLIDATION AND CERTAIN SALES OF ASSETS.  The
Company will covenant that it will not merge into or consolidate with any other
corporation, or convey or transfer its properties and assets substantially as an
entirety, to, any person unless (a) the successor is a U.S. corporation, (b) the
successor assumes on the same terms and conditions all the obligations under the
Debt Securities and the Indentures and (c) immediately after giving effect to
the transaction, there is no default under the applicable Indenture. (SECTION
901) Upon any such merger, consolidation, conveyance or transfer, the successor
will succeed to, and will be substituted in lieu of, the Company. (SECTION 902)
 
    EVENT RISK.  Except for the limitations on Secured Indebtedness and Sale and
Leaseback Transactions described below under Senior Debt Securities, the
Indentures and Debt Securities do not contain any covenants or other provisions
designed to afford holders of the Debt Securities protection in the event of a
highly leveraged transaction involving the Company.
 
                                       9
<PAGE>
SATISFACTION AND DISCHARGE; DEFEASANCE
 
    At the request of the Company, the applicable Indenture will cease to be in
effect as to the Debt Securities of any series (except for certain obligations
to register the transfer or exchange of such Debt Securities and related
coupons, if any, and hold moneys for payment of such Debt Securities and coupons
in trust) when either (a) all such Debt Securities and coupons have been
delivered to the applicable Trustee for cancellation or (b) all such Debt
Securities and coupons have become due and payable or will become due and
payable at their stated maturity within one year, or are to be called for
redemption within one year, and the Company has deposited with the applicable
Trustee, in trust money, in the currency, currencies or currency unit or units
in which such Debt Securities are payable, in an amount sufficient to pay all
the principal of, and premium and interest, if any, on, such Debt Securities on
the dates such payments are due in accordance with the terms of such Debt
Securities. (SECTION 501)
 
    Unless otherwise specified in the applicable Prospectus Supplement, the
Company, at its option, (a) will be Discharged after 90 days from any and all
obligations in respect of any series of Debt Securities (except for certain
obligations to register the transfer of or exchange Debt Securities and related
coupons, replace stolen, lost or mutilated Debt Securities and coupons, maintain
paying agencies and hold moneys for payment in trust) or (b) need not comply
with certain restrictive covenants of the Indenture in respect of such series
(including those described under "Certain Covenants of the Company"), in each
case if the Company deposits with the trustee in trust, money, or, in the case
of Debt Securities and coupons denominated in U.S. dollars, U.S. Government
Obligations or, in the case of Debt Securities and coupons denominated in a
foreign currency, Foreign Government Securities, which through the payment of
interest thereon and principal thereof in accordance with their terms will
provide money, in an amount sufficient to pay in the currency, currencies or
currency unit or units in which such Debt Securities are payable all the
principal (including any mandatory sinking fund payments) of, and interest on,
such series on the dates such payments are due in accordance with the terms of
such series. Among the conditions to the Company's exercising any such option,
the Company is required to deliver to the applicable Trustee an opinion of
counsel to the effect that the deposit and related defeasance would not cause
the holders of such series to recognize income, gain or loss for United States
Federal income tax purposes and that the holders of such series will be subject
to United States Federal income tax in the same amounts, in the same manner and
at the same times as would have been the case if such option had not been
exercised. (SECTION 503)
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
    Each Indenture provides that, if an Event of Default specified therein with
respect to any series of Debt Securities shall have happened and be continuing,
either the applicable Trustee or the holders of 25% in principal amount of the
outstanding Debt Securities of such series (in the case of certain events of
bankruptcy, insolvency and reorganization, voting as one class with all other
outstanding Debt Securities) may declare the principal of all the Debt
Securities of such series, together with accrued interest thereon, if any, to be
immediately due and payable by notice in writing to the Company (and to the
applicable Trustee if given by the holders). (SECTION 602)
 
    Events of Default in respect of any series are defined in the Indentures as
being: default for 30 days in payment of any interest installment when due;
default in payment of principal of, or premium, if any, on, Debt Securities of
such series when due (other than any sinking fund payments) at their stated
maturity, by declaration, when called for redemption or otherwise; default for
30 days in the making of any sinking fund payment when due; default for 90 days
after notice to the Company by the applicable Trustee or by holders of 25% in
principal amount of the outstanding Debt Securities of such series in the
performance of any covenant in the Debt Securities of such series or in the
applicable Indenture with respect to Debt Securities of such series; and certain
events of bankruptcy, insolvency and reorganization. No Event of Default with
respect to a single series of indebtedness issued under an Indenture (and any
supplemental
 
                                       10
<PAGE>
indentures) necessarily constitutes an Event of Default with respect to any
other series of indebtedness issued thereunder. (SECTION 601)
 
    Each Indenture provides that the applicable Trustee will, within 90 days
after the occurrence of a default with respect to the Debt Securities of any
series, give to the holders of the Debt Securities of such series notice of all
uncured and unwaived defaults known to it; provided that, except in the case of
default in the payment of principal of, or premiums or interest, if any, on, or
a sinking fund installment, if any, with respect to any of the Debt Securities
of such series, such Trustee will be protected in withholding such notice if it
in good faith determines that the withholding of such notice is in the interest
of the holders of the Debt Securities of such series. The term "default" for the
purpose of this provision only means the happening of any of the Events of
Default specified above, except that any grace period of notice requirement is
eliminated. (SECTION 702)
 
    Each Indenture contains provisions entitling the applicable Trustee, subject
to the duty of such Trustee during an Event of Default to act with the required
standard of care, to be indemnified by the holders of the Debt Securities before
proceeding to exercise any right or power under such Indenture at the request of
holders of the Debt Securities. (SECTION 703)
 
    Each Indenture provides that the holders of a majority in principal amount
of the outstanding Debt Securities of any series may in certain circumstances
direct the time, method and place of conducting proceedings for remedies
available to the applicable Trustee or exercising any trust or power conferred
on such Trustee in respect of such series. (SECTION 612)
 
    Each Indenture includes a covenant that the Company will file annually with
the applicable Trustee an Officers' Certificate stating whether any default
exists and specifying any default that exists. (SECTION 1106)
 
    In certain cases, the holders of a majority in principal amount of the
outstanding Debt Securities of any series may on behalf of the holders of all
Debt Securities of such series waive any past default or Event of Default with
respect to the Debt Securities of such series or compliance with certain
provisions of the Indenture, except, among other things, a default not
theretofore cured in payment of the principal of, or premium or interest, if
any, on, any of the Debt Securities of such series. (SECTION 613) The holders of
a majority in principal amount of a series of outstanding Debt Securities also
have certain rights to rescind any declaration of acceleration with respect to
such series after all Events of Default with respect to such series not arising
from such declaration shall have been cured. (SECTION 602)
 
MODIFICATION OF THE INDENTURES
 
    Each Indenture provides that the Company and the Trustee thereunder may,
without the consent of any holders of Debt Securities, enter into supplemental
indentures for the purposes, among other things, of adding to the Company's
covenants, adding additional Events of Default, establishing the form or terms
of any series of Debt Securities issued under such supplemental indentures or
curing ambiguities or inconsistencies in the applicable Indenture or making
other provisions, provided such other provisions shall not adversely affect the
interests of the holders of any series of Debt Securities in any material
respect. (SECTION 1001)
 
    Each Indenture contains provisions permitting the Company and the Trustee,
with the consent of the holders of not less than a majority in principal amount
of the outstanding Debt Securities of all affected series (acting as one class),
to execute supplemental indentures adding any provisions to or changing or
eliminating any of the provisions of the applicable Indenture or modifying the
rights of the holders of the Debt Securities of such series, except that no such
supplemental indenture may, without the consent of the holders of all the
outstanding Debt Securities affected thereby, among other things: (i) change the
Stated Maturity of the principal of, or any installment of principal of or
interest on, any Debt Security; (ii) reduce the principal amount of, the rate of
interest on, or any premium payable upon the redemption of, any Debt Security;
(iii) reduce the amount of the principal of an Original Issue Discount Security
that would be due
 
                                       11
<PAGE>
and payable upon acceleration of the Maturity thereof; (iv) change any Place of
Payment where, or the currency, currencies or currency unit or units in which,
any Debt Security or any premium or interest thereon is payable; (v) impair the
right to institute suit for the enforcement of any such payment on or after the
Stated Maturity thereof (or, in the case of redemption, on or after the
Redemption Date); (vi) affect adversely the terms, if any, of conversion of any
Debt Security into stock or other securities of the Company or of any other
corporation; (vii) reduce the percentage in principal amount of the outstanding
Debt Securities of any series, the consent of whose holders is required for any
such supplemental indenture, or the consent of whose holders is required for any
waiver (of compliance with certain provisions of the applicable Indenture or
certain defaults thereunder and their consequences) provided for in such
Indenture; (viii) change any obligation of the Company, with respect to
outstanding Debt Securities of a series, to maintain an office or agency in the
places and for the purposes specified in the Indenture for such series; or (ix)
modify any of the foregoing provisions or the provisions for the waiver of
certain covenants and defaults, except to increase any applicable percentage of
the aggregate principal amount of outstanding Debt Securities the consent of the
holders of which is required or to provide with respect to any particular series
the right to condition the effectiveness of any supplemental indenture as to
that series on the consent of the holders of a specified percentage of the
aggregate principal amount of outstanding Debt Securities of such series or to
provide that certain other provisions of the Indentures cannot be modified or
waived without the consent of the holder of each outstanding Debt Security
affected thereby. (SECTION 1002)
 
MEETINGS
 
    The Indentures contain provisions for convening meetings of the holders of
Debt Securities of any series. (SECTION 1401) A meeting may be called at any
time by the Trustee under the applicable Indenture, and also, upon request, by
the Company or the holders of at least 10% in principal amount of the
outstanding Debt Securities of such series, in any such case upon notice given
in accordance with "Notices" below. (SECTION 1402) Persons entitled to vote a
majority in principal amount of the outstanding Debt Securities of a series will
constitute a quorum at a meeting of holders of Debt Securities of such series,
except that in the absence of a quorum, if the meeting was called by the Company
or the Trustee, it may be adjourned for a period of not less than 10 days, and
in the absence of a quorum at any such adjourned meeting, the meeting may be
further adjourned for a period of not less than 10 days. Except for any consent
which must be given by the holder of each outstanding Debt Security affected
thereby, as described above under "Modification of the Indentures", and subject
to the provisions described in the last sentence under this subheading, any
resolution presented at a meeting or adjourned meeting duly reconvened at which
a quorum is present may be adopted by the affirmative vote of the holders of a
majority in principal amount of the outstanding Debt Securities of that series;
PROVIDED, HOWEVER, that any resolution with respect to any request, demand,
authorization, direction, notice, consent, waiver or other action which may be
made, given or taken by the holders of a specified percentage, which is equal to
or less than a majority, in principal amount of outstanding Debt Securities of a
series may be adopted at a meeting or an adjourned meeting duly reconvened at
which a quorum is present by the affirmative vote of the holders of such
specified percentage in principal amount of the outstanding Debt Securities of
that series. Any resolution passed or decision taken at any meeting of holders
of Debt Securities of any series duly held in accordance with an Indenture will
be binding on all holders of Debt Securities of that series and the related
coupons. With respect to any consent, waiver or other action which the
Indentures expressly provide may be given by the holders of a specified
percentage of outstanding Debt Securities of all series affected thereby (acting
as one class), only the principal amount of outstanding Debt Securities of any
series represented at a meeting or an adjourned meeting duly reconvened at which
a quorum is present as aforesaid and voting in favor of such action will be
counted for purposes of calculating the aggregate principal amount of
outstanding Debt Securities of all series affected thereby favoring such action.
(SECTION 1404)
 
                                       12
<PAGE>
NOTICES
 
    Except as otherwise provided in the applicable Indenture, notices to holders
of Bearer Debt Securities will be given by publication at least once in a daily
newspaper in The City of New York and in London and in such other city or cities
as may be specified in such Bearer Debt Securities and will be mailed to such
persons whose names and addresses were previously filed with the applicable
Trustee, within the time prescribed for the giving of such notice. Notice to
holders of Registered Debt Securities will be given by mail to the addresses of
such holders as they appear in the Security Register. (SECTION 106)
 
TITLE
 
    Title to any Bearer Debt Securities and any coupons appertaining thereto
will pass by delivery. The Company, the Trustee and any agent of the Company or
the Trustee may treat the bearer of any Bearer Debt Security or related coupon
and, prior to due presentment for registration of transfer, the registered owner
of any Registered Debt Security (including Registered Debt Securities in global
registered form), as the absolute owner thereof (whether or not such Debt
Security or coupon shall be overdue and notwithstanding any notice to the
contrary) for the purpose of making payment and for all other purposes. (SECTION
407)
 
REPLACEMENT OF SECURITIES COUPONS
 
    Any mutilated Debt Security and any Debt Security with a mutilated coupon
appertaining thereto will be replaced by the Company at the expense of the
holder upon surrender of such mutilated Debt Security or Debt Security with a
mutilated coupon to the Security Registrar. Debt Securities or coupons that
become destroyed, stolen or lost will be replaced by the Company at the expense
of the holder upon delivery to the Security Registrar of evidence of the
destruction, loss or theft thereof satisfactory to the Company and the Security
Registrar; in the case of any coupon which becomes destroyed, stolen or lost,
such coupon will be replaced (upon surrender to the Security Registrar of the
Debt Security with all appurtenant coupons not destroyed, stolen or lost) by
issuance of a new Debt Security in exchange for the Debt Security to which such
coupon appertains. In the case of a destroyed, lost or stolen Debt Security or
coupon, an indemnity satisfactory to the Security Registrar and the Company may
be required at the expense of the holder of such Debt Security or coupon before
a replacement Debt Security will be issued. (SECTION 405)
 
GOVERNING LAW
 
    The Indentures, the Debt Securities and the coupons will be governed by, and
construed in accordance with, the laws of the State of New York.
 
CONCERNING THE TRUSTEES
 
    The Company may from time to time maintain lines of credit, and have other
customary banking relationships, with the Senior Trustee or the Subordinated
Trustee.
 
SENIOR DEBT SECURITIES
 
    The Senior Debt Securities will be unsecured and will rank PARI PASSU with
all other unsecured and non-subordinated debt of the Company.
 
    CERTAIN COVENANTS IN SENIOR INDENTURE
 
    LIMITATION ON SECURED INDEBTEDNESS.  The Senior Indenture provides that the
Company will not, and will not permit any Restricted Subsidiary to, create,
assume, incur or guarantee any Secured Indebtedness without securing the Debt
Securities equally and ratably with, or prior to, such Secured Indebtedness
 
                                       13
<PAGE>
unless immediately thereafter the aggregate amount of all Secured Indebtedness
(exclusive of Secured
Indebtedness if the Debt Securities are secured equally and ratably with, or
prior to, such Secured Indebtedness) and the discounted present value of all net
rentals payable under leases entered into in connection with Sale and Leaseback
Transactions (as defined below) entered into after July 15, 1985 (except any
such leases entered into by a Restricted Subsidiary before the time it became a
Restricted Subsidiary) would not exceed 10% of Consolidated Net Tangible Assets.
(SECTION 1104 OF SENIOR INDENTURE)
 
    LIMITATION ON SALE AND LEASEBACK TRANSACTIONS.  The Senior Indenture
provides that the Company will not, and will not permit any Restricted
Subsidiary to, enter any lease longer than three years (excluding leases of
newly acquired, improved or constructed property) covering any Principal
Property of the Company or any Restricted Subsidiary that is sold to any other
person in connection with such lease (a "Sale and Leaseback Transaction"),
unless either (a) immediately thereafter, the sum of (i) the discounted present
value of all net rentals payable under all such leases entered into after July
15, 1985 (except any such leases entered into by a Restricted Subsidiary before
the time it became a Restricted Subsidiary) and (ii) the aggregate amount of all
Secured Indebtedness (exclusive of Secured Indebtedness if the Debt Securities
are secured equally and ratably with, or prior to, such Secured Indebtedness)
does not exceed 10% of Consolidated Net Tangible Assets, or (b) an amount equal
to the greater of (x) the net proceeds to the Company or a Restricted Subsidiary
from such sale and (y) the discounted present value of all net rentals payable
thereunder, is applied within 180 days to the retirement of long-term debt of
the Company or a Restricted Subsidiary (other than such debt which is
subordinated to the Debt Securities or which is owing to the Company or a
Restricted Subsidiary). (SECTION 1105 OF SENIOR INDENTURE)
 
    CERTAIN DEFINITIONS.  "SECURED INDEBTEDNESS" will mean indebtedness of the
Company or any Restricted Subsidiary for borrowed money secured by any lien upon
(or in respect of any conditional sale or other title retention agreement
covering) any Principal Property or any stock or indebtedness of a Restricted
Subsidiary, but excluding from such definition all indebtedness: (i) outstanding
on July 15, 1985, secured by liens (or arising from conditional sale or other
title retention agreements) existing on that date; (ii) incurred after July 15,
1985 to finance the acquisition, improvement or construction of property and
either secured by purchase money mortgages or liens placed on such property
within 180 days of acquisition, improvement or construction or arising from
conditional sale or other title retention agreements; (iii) secured by liens on
Principal Property or on the stock or indebtedness of Restricted Subsidiaries,
and, in either case, existing at the time of acquisition thereof; (iv) owing to
the Company or any Restricted Subsidiary; (v) secured by liens (or conditional
sale or other title retention devices) existing at the time a corporation became
or becomes a Restricted Subsidiary in the case of a corporation which shall have
become or becomes a Restricted Subsidiary after July 15, 1985; (vi) arising from
any Sale and Leaseback Transaction; (vii) incurred to finance the acquisition or
construction of property secured by liens in favor of any country or any
political subdivision thereof; and (viii) constituting any replacement,
extension or renewal of any such indebtedness (to the extent such indebtedness
is not increased). "PRINCIPAL PROPERTY" will mean land, land improvements,
buildings and associated factory, laboratory and office equipment (excluding all
products marketed by the Company or any of its subsidiaries) constituting a
manufacturing, development, warehouse, service or office facility owned by or
leased to the Company or a Restricted Subsidiary, located within the United
States and having an acquisition cost plus capitalized improvements in excess of
0.15% of Consolidated Net Tangible Assets as of the date of such determination,
other than any such property financed through the issuance of tax-exempt
governmental obligations, or which the Board of Directors determines is not of
material importance to the Company and its Restricted Subsidiaries taken as a
whole, or in which the interest of the Company and all its subsidiaries does not
exceed 50%. "CONSOLIDATED NET TANGIBLE ASSETS" will mean the total assets of the
Company and its subsidiaries, less current liabilities and certain intangible
assets (not including program products). "RESTRICTED SUBSIDIARY" will mean (i)
any subsidiary of the Company which has substantially all its property in the
United States, which owns or is a lessee of any Principal Property and in which
the investment of the Company and all its subsidiaries exceeds 0.15% of
Consolidated Net Tangible Assets as of the date of such determination, other
than certain financing subsidiaries and subsidiaries formed or acquired after
July 15,
 
                                       14
<PAGE>
1985 for the purpose of acquiring the stock, business or assets of another
person and that have not and do not acquire all or any substantial part of the
business or assets of the Company or any Restricted Subsidiary and (ii) any
other subsidiary designated by the Board of Directors as a Restricted
Subsidiary. (SECTION 101 OF SENIOR INDENTURE)
 
    The Senior Indenture provides that the Company may omit to comply with the
restrictive covenants described above under "Limitation on Secured Indebtedness"
and "Limitation on Sale and Leaseback Transactions" if the holders of not less
than a majority in principal amount of all series of outstanding Debt Securities
affected thereby (acting as one class) waive compliance with such restrictive
covenants. (SECTION 1107 OF SENIOR INDENTURE)
 
SUBORDINATED DEBT SECURITIES
 
    The Subordinated Debt Securities will be unsecured and will be subject to
the subordination provisions described below.
 
    The payment of the principal of, premium (if any) and interest on the
Subordinated Debt Securities is subordinated in right of payment, as set forth
in the Subordinated Indenture, to the payment when due of all Senior
Indebtedness. (SECTION 1501 OF SUBORDINATED INDENTURE) However, payment from the
money or the proceeds of U.S. government obligations held in any defeasance
trust is not subordinate to any Senior Indebtedness or subject to the
restrictions described herein. (SECTION 1512 OF SUBORDINATED INDENTURE). Claims
of creditors of the Company's subsidiaries, including trade creditors, secured
creditors and creditors holding guarantees issued by such subsidiaries, and
claims of preferred stockholders (if any) of such subsidiaries generally will
have priority with respect to the assets and earnings of such subsidiaries over
the claims of creditors of the Company, including holders of the Subordinated
Debt Securities, even though such obligations may not constitute Senior
Indebtedness. The Subordinated Debt Securities therefore will be effectively
subordinated to creditors (including trade creditors) and preferred stockholders
(if any) of subsidiaries of the Company.
 
    Senior Indebtedness is defined in the Subordinated Indenture as the
principal of, premium, if any, and interest on, (i) all the Company's
indebtedness for money borrowed, other than the subordinated securities issued
under the Subordinated Indenture, whether outstanding on the date of execution
of the Subordinated Indenture or thereafter created, assumed or incurred, except
such indebtedness as is by its terms expressly stated to be not superior in
right of payment to the subordinated securities issued under the Subordinated
Indenture or to rank PARI PASSU with the subordinated securities issued under
the Subordinated Indenture and (ii) any deferrals, renewals or extensions of any
such Senior Indebtedness, except that Senior Indebtedness will not include (1)
any obligation of the Company to any subsidiary, (2) any liability for Federal,
state, local or other taxes owed or owing by the Company, (3) any accounts
payable or other liability to trade creditors arising in the ordinary course of
business (including guarantees thereof or instruments evidencing such
liabilities), (4) any indebtedness, guarantee or obligation of the Company which
is expressly subordinate or junior in right of payment in any respect to any
other indebtedness, guarantee or obligation of the Company, including any senior
subordinated indebtedness and any subordinated obligations, (5) any obligations
with respect to any capital stock, or (6) any indebtedness incurred in violation
of the Subordinated Indenture. The term "indebtedness for money borrowed" as
used in the foregoing sentence includes, without limitation, any obligation of,
or any obligation guaranteed by, the Company for the repayment of borrowed
money, whether or not evidenced by bonds, debentures, notes or other written
instruments, and any deferred obligation for the payment of the purchase price
of property or assets. (SECTION 101 OF SUBORDINATED INDENTURE) There is no
limitation on the issuance of additional Senior Indebtedness of the Company. The
Senior Debt Securities constitute Senior Indebtedness under the Subordinated
Indenture. The Subordinated Debt Securities will rank PARI PASSU with other
subordinated indebtedness of the Company.
 
                                       15
<PAGE>
    The Company may not pay principal of, premium (if any) or interest on the
Subordinated Debt Securities, make any deposits pursuant to the defeasance
provisions in the Subordinated Indenture or otherwise purchase, redeem or retire
any Subordinated Debt Securities (collectively, "pay the Subordinated Debt
Securities") if (i) any Senior Indebtedness is not paid when due or (ii) any
other default on Senior Indebtedness occurs and the maturity of such Senior
Indebtedness is accelerated in accordance with its terms unless the default has
been cured or waived and any such acceleration has been rescinded or such Senior
Indebtedness has been paid in full. However, the Company may pay the
Subordinated Securities without regard to the foregoing if the Company and the
Subordinated Trustee receive written notice approving such payment from the
Representatives of the holders of Senior Indebtedness with respect to which
either of the events set forth in clause (i) or (ii) of the immediately
preceding sentence has occurred and is continuing. During the continuance of any
default (other than a default described in clause (i) or (ii) of the second
preceding sentence) with respect to any Senior Indebtedness pursuant to which
the maturity thereof may be accelerated immediately without further notice
(except such notice as may be required to effect such acceleration) or the
expiration of any applicable grace periods, the Company may not pay the
Subordinated Securities for a period (a "Payment Blockage Period") commencing
upon the receipt by the Subordinated Trustee (with a copy to the Company) of
written notice (a "Blockage Notice") of such default from the Representatives of
the holders of Senior Indebtedness specifying an election to effect a Payment
Blockage Period and ending 179 days thereafter (or earlier if such Payment
Blockage Period is terminated (1) by written notice to the Subordinated Trustee
and the Company from the Person or Persons who gave such Blockage Notice, (2)
because the default giving rise to such Blockage Notice is no longer continuing
or (3) because such Senior Indebtedness has been repaid in full).
Notwithstanding the provisions described in the immediately preceding sentence,
unless the holders of Senior Indebtedness or the Representatives of such holders
have accelerated the maturity of such Senior Indebtedness, the Company may
resume payments on the Subordinated Debt Securities after the end of such
Payment Blockage Period. Not more than one Blockage Notice may be given in any
consecutive 360-day period, irrespective of the number of defaults with respect
to Senior Indebtedness during such period. (SECTION 1503 OF SUBORDINATED
INDENTURE)
 
    Upon any payment or distribution of the assets of the Company to creditors
upon a total or partial liquidation or dissolution or reorganization of or
similar proceeding relating to the Company or their property, the holders of
Senior Indebtedness will be entitled to receive payment in full of the Senior
Indebtedness before the holders of Subordinated Debt Securities are entitled to
receive any payment, and until the Senior Indebtedness is paid in full, any
payment or distribution to which holders of Subordinated Debt Securities would
be entitled but for the subordination provisions of the Subordinated Indenture
(other than distributions of stock and certain debt securities subordinated to
the Senior Indebtedness) will be made to holders of the Senior Indebtedness as
their interests may appear. (SECTION 1502 OF SUBORDINATED INDENTURE) If a
distribution is made to holders of Subordinated Debt Securities that, due to the
subordination provisions, should not have been made to them, such holders of
Subordinated Debt Securities are required to hold it in trust for the holders of
Senior Indebtedness, and pay it over to them as their interests may appear.
(SECTION 1505 OF SUBORDINATED INDENTURE)
 
    If payment of the Subordinated Debt Securities is accelerated because of an
Event of Default, the Company or the Subordinated Trustee will promptly notify
the holders of Senior Indebtedness or the Representatives of such holders of the
acceleration. The Company may not pay the Subordinated Securities until five
Business Days after such holders or the Representatives of the Senior
Indebtedness receive notice of such acceleration and, thereafter, may pay the
Subordinated Securities only if the subordination provisions of the Subordinated
Indenture otherwise permit payment at that time. (SECTION 1505 OF SUBORDINATED
INDENTURE)
 
    By reason of such subordination provisions contained in the Subordinated
Indenture, in the event of insolvency, creditors of the Company who are holders
of Senior Indebtedness may recover more, ratably, than the holders of
Subordinated Debt Securities, and creditors of the Company who are not holders
of Senior Indebtedness may recover less, ratably, than holders of Senior
Indebtedness and may recover more, ratably, than the holders of Subordinated
Indebtedness.
 
                                       16
<PAGE>
                       DESCRIPTION OF THE PREFERRED STOCK
 
    The following is a description of certain general terms and provisions of
the Preferred Stock. The particular terms of any series of Preferred Stock will
be described in the applicable Prospectus Supplement. If so indicated in a
Prospectus Supplement, the terms of any such series may differ from the terms
set forth below.
 
    The summary of terms of the Company's Preferred Stock contained in this
Prospectus does not purport to be complete and is subject to, and qualified in
its entirety by, the provisions of the Company's Certificate of Incorporation
and the certificate of amendment relating to each series of the Preferred Stock
(the "Certificate of Amendment"), which will be filed as an exhibit to or
incorporated by reference in the Registration Statement of which this Prospectus
is a part at or prior to the time of issuance of such series of the Preferred
Stock.
 
    The Company's Certificate of Incorporation authorizes the issuance of
150,000,000 shares of Preferred Stock, par value $.01 per share. As of September
30, 1997, 2,597,261 shares of Series A 7 1/2% Preferred Stock, liquidation
preference $100 per share, were outstanding. Subject to limitations prescribed
by law, the Board of Directors is authorized at any time to issue one or more
series of Preferred Stock; to determine the designation for any such series by
number, letter, or title that shall distinguish such series from any other
series of Preferred Stock; and to determine the number of shares in any such
series (including a determination that such series shall consist of a single
share).
 
    The Board of Directors is authorized to determine, for each series of
Preferred Stock, and the Prospectus Supplement shall set forth with respect to
such series: (i) whether the holders thereof shall be entitled to cumulative,
noncumulative, or partially cumulative dividends and, with respect to shares
entitled to dividends, the dividend rate or rates, including without limitation
the methods and procedures for determining such rate or rates, and any other
terms and conditions relating to such dividends; (ii) whether, and if so to what
extent and upon what terms and conditions, the holders thereof shall be entitled
to rights upon the liquidation of, or upon any distribution of the assets of,
the Company; (iii) whether, and if so upon what terms and conditions, such
shares shall be convertible into Debt Securities, any other series of Preferred
Stock, Depositary Shares or Capital Stock, or exchangeable for the securities of
any other corporation; (iv) whether, and if so upon what terms and conditions,
such shares shall be redeemable; (v) whether the shares shall be redeemable and
subject to any sinking fund provided for the purchase or redemption of such
shares and, if so, the terms of such fund; (vi) whether the holders thereof
shall be entitled to voting rights and, if so, the terms and conditions for the
exercise thereof; PROVIDED that the holders of shares of Preferred Stock (A)
will not be entitled to more than the lesser of (x) one vote per $100 of
liquidation value or (y) one vote per share, when voting as a class with the
holders of shares of capital stock, and (B) will not be entitled to vote on any
matter separately as a class, except to the extent specified with respect to
each series, (x) with respect to any amendment or alteration of the provisions
of the Certificate of Incorporation that would adversely affect the powers,
preferences, or special rights of the applicable series of Preferred Stock or
(y) in the event the Corporation fails to pay dividends on any series of
Preferred Stock in full for any six quarterly dividend payment periods, whether
or not consecutive, in which event the number of directors may be increased by
two and the holders of outstanding shares of Preferred Stock then similarly
entitled shall be entitled to elect the two additional directors until full
accumulated dividends on all such shares of Preferred Stock shall have been
paid; and (vii) whether the holders thereof shall be entitled to other
preferences or rights, and, if so, the qualifications, limitations, or
restrictions of such preferences or rights.
 
DIVIDENDS
 
    Holders of shares of Preferred Stock shall be entitled to receive, when, as
and if declared by the Board of Directors out of funds of the Company legally
available for payment, cash dividends payable at such dates and at such rates
per share per annum as set forth in the applicable Prospectus Supplement. The
 
                                       17
<PAGE>
Prospectus Supplement will also state applicable record dates regarding the
payment of dividends. Except as set forth below, no dividends shall be declared
or paid or set apart for payment on any series of Preferred Stock unless full
dividends for all series of Preferred Stock (including any accumulation in
respect of unpaid dividends for prior dividend periods, if dividends on such
Preferred Stock are cumulative) have been or contemporaneously are declared and
paid or declared and a sum sufficient for the payment thereof is set apart for
such payment. When dividends are not so paid in full (or a sum sufficient for
such full payment is not so set apart) upon the Preferred Stock, dividends
declared (if any) on the Preferred Stock shall be declared pro-rata so that the
amount of dividends declared per share on each series of Preferred Stock shall
in all cases bear to each other series the same ratio that (x) accrued dividends
(including any accumulation with respect to unpaid dividends for prior dividend
periods, if dividends for such series are cumulative) for the then-current
dividend period per share for each respective series of Preferred Stock bear to
(y) aggregate accrued dividends for the then-current dividend period (including
all accumulations with respect to unpaid dividends for prior periods for all
series which are cumulative) for all outstanding shares of Preferred Stock.
 
    Unless all dividends on the Preferred Stock shall have been paid in full (i)
no dividend shall be declared and paid or declared and a sum sufficient thereof
set apart for payment (other than a dividend in the Company's capital stock or
in any other class ranking junior to the Preferred Stock as to dividends and
liquidation preferences) or other distribution declared or made upon the shares
of the Company's capital stock or upon any other class ranking junior to the
Preferred Stock as to dividends or liquidation preferences and (ii) no shares of
the Company's capital stock or class of stock ranking junior to the Preferred
Stock as to dividends or liquidation preferences may be redeemed, purchased or
otherwise acquired by the Company except by conversion into or exchange for
shares of the Company ranking junior to the Preferred Stock as to dividends and
liquidation preferences.
 
CONVERTIBILITY
 
    No series of Preferred Stock will be convertible into, or exchangeable for,
other securities or property except as set forth in the related Prospectus
Supplement.
 
REDEMPTION AND SINKING FUND
 
    No series of Preferred Stock will be redeemable or receive the benefit of a
sinking fund except as set forth in the related Prospectus Supplement.
 
LIQUIDATION
 
    Upon any voluntary or involuntary liquidation, dissolution or winding up of
the Company, holders of any series of Preferred Stock will be entitled to
receive the liquidation preference per share specified in the Prospectus
Supplement, if any, in each case together with any applicable accrued and unpaid
dividends and before any distribution to holders of the Company's capital stock
or any class of stock ranking junior to the Preferred Stock as to dividends and
liquidation preferences. In the event there are insufficient assets to pay such
liquidation preferences for all classes of Preferred Stock in full, the
remaining assets shall be allocated ratably among all series of Preferred Stock
based upon the aggregate liquidation preference for all outstanding shares for
each such series. After payment of the full amount of the liquidation preference
to which they are entitled, the holders of shares of Preferred Stock will not be
entitled to any further participation in any distribution of assets by the
Company unless otherwise provided in a Prospectus Supplement, and the remaining
assets of the Company shall be distributable exclusively among the holders of
the Company's capital stock and any class of stock ranking junior to the
Preferred Stock as to dividends and liquidation preferences, according to their
respective interests.
 
                                       18
<PAGE>
VOTING
 
    No series of Preferred Stock will be entitled to vote except as provided
below or in the related Prospectus Supplement. Unless otherwise specified in the
related Prospectus Supplement, if at any time the Company shall have failed to
declare and pay in full dividends for six quarterly periods, whether consecutive
or not, on any applicable series of Preferred Stock and all such preferred
dividends remain unpaid (a "Preferred Dividend Default"), the number of
directors of the Company shall be increased by two and the holders of such
series of Preferred Stock, voting together as a class with all other series of
Preferred Stock then entitled to vote on such election of directors, shall be
entitled to elect such two additional directors until the full dividends
accumulated on all outstanding shares of such series shall have been declared
and paid in full. Upon the occurrence of a Preferred Dividend Default, the Board
of Directors shall within 10 business days of such default call a special
meeting of the holders of shares of all affected series, for which there is a
Preferred Dividend Default, for the purpose of electing the additional
directors. In lieu of holding such meeting, the holders of record of a majority
of the outstanding shares of all series for which there is a Preferred Dividend
Default who are then entitled to participate in the election of directors may,
by action taken by written consent, elect such additional directors. If and when
all accumulated dividends on any series of Preferred Stock have been paid in
full, the holders of shares of such series shall be divested of the foregoing
voting rights subject to revesting in the event of each and every Preferred
Dividend Default. Upon termination of such special voting rights attributable to
all series for which there has been a Preferred Dividend Default, the term of
office of each director so elected (a "Preferred Stock Director") shall
terminate and the number of directors of the Company shall, without further
action, be reduced by two, subject always to the increase in the number of
directors pursuant to the foregoing provisions in case of a future Preferred
Dividend Default. Any Preferred Stock Director may be removed at any time with
or without cause by, and shall not be removed otherwise than by, the vote of the
holders of record of a majority of the outstanding shares of all series of
Preferred Stock who were entitled to participate in such director's election,
voting as a separate class, at a meeting called for such purpose or by written
consent. So long as a Preferred Stock Default shall continue, any vacancy in the
office of a Preferred Stock Director may be filled by written consent of the
Preferred Stock Director remaining in office, or if none remains in office, by a
vote of the holders of record of a majority of the outstanding series of
Preferred Stock who are then entitled to participate in the election of such
Preferred Stock Directors as provided above. As long as the Preferred Dividend
Default shall continue, holders of the Preferred Stock shall not, as such
stockholders, be entitled to vote on the election or removal of directors, other
than Preferred Stock Directors, but shall not be divested of any other voting
rights provided to the holders of Preferred Stock by law with respect to any
other matter to be acted upon by the stockholders of the Company. The Preferred
Stock Directors shall each be entitled to one vote per director on any matter.
Additionally, unless otherwise specified in a Prospectus Supplement, the
affirmative vote of the holders of a majority of the outstanding shares of each
series of Preferred Stock voting together as a class, is required to authorize
any amendment, alteration or repeal of the Restated Certificate of Incorporation
or any Certificate of Amendment which would adversely affect the powers,
preferences, or special rights of the Preferred Stock including authorizing any
class of stock with superior dividend and liquidation preferences.
 
MISCELLANEOUS
 
    The holders of Preferred Stock will have no preemptive rights. The Preferred
Stock, upon issuance against full payment of the purchase price therefor, will
be fully paid and nonassessable. Shares of Preferred Stock redeemed or otherwise
reacquired by the Company shall resume the status of authorized and unissued
shares of Preferred Stock undesignated as to series, and shall be available for
subsequent issuance. There are no restrictions on repurchase or redemption of
the Preferred Stock while there is any arrearage on sinking fund installments
except as may be set forth in a Prospectus Supplement. Neither the par value nor
the liquidation preference is indicative of the price at which the Preferred
Stock will actually trade on or after the date of issuance. Payment of dividends
on any series of Preferred Stock may be restricted by loan agreements,
indentures and other transactions entered into by the Company.
 
                                       19
<PAGE>
NO OTHER RIGHTS
 
    The shares of a series of Preferred Stock will not have any preferences,
voting powers or relative, participating, optional or other special rights
except as set forth above or in the related Prospectus Supplement, the
Certificate of Incorporation or Certificate of Amendment or as otherwise
required by law.
 
TRANSFER AGENT AND REGISTRAR
 
    The transfer agent for each series of Preferred Stock will be described in
the related Prospectus Supplement.
 
                      DESCRIPTION OF THE DEPOSITARY SHARES
 
    The Company may, at its option, elect to offer Depositary Shares rather than
full shares of Preferred Stock. In the event such option is exercised, each of
the Depositary Shares will represent ownership of and entitlement to all rights
and preferences of a fraction of a share of Preferred Stock of a specified
series (including dividend, voting, redemption and liquidation rights). The
applicable fraction will be specified in the Prospectus Supplement. The shares
of Preferred Stock represented by the Depositary Shares will be deposited with a
Depositary (the "Depositary") named in the applicable Prospectus Supplement,
under a Deposit Agreement (the "Deposit Agreement"), among the Company, the
Depositary and the holders of the Depositary Receipts. Certificates evidencing
Depositary Shares ("Depositary Receipts") will be delivered to those persons
purchasing Depositary Shares in the offering. The Depositary will be the
transfer agent, registrar and dividend disbursing agent for the Depositary
Shares. Holders of Depositary Receipts agree to be bound by the Deposit
Agreement, which requires holders to take certain actions such as filing proof
of residence and paying certain charges.
 
    The summary of terms of the Company's Depositary Shares contained in this
Prospectus does not purport to be complete and is subject to, and qualified in
its entirety by, the provisions of the Deposit Agreement, the Company's
Certificate of Incorporation and the Certificate of Amendment for the applicable
series of Preferred Stock.
 
DIVIDENDS
 
    The Depositary will distribute all cash dividends or other cash
distributions received in respect of the series of Preferred Stock represented
by the Depositary Shares to the record holders of Depositary Receipts in
proportion to the number of Depositary Shares owned by such holders on the
relevant record date, which will be the same date as the record date fixed by
the Company for the applicable series of Preferred Stock. The Depositary,
however, will distribute only such amount as can be distributed without
attributing to any Depositary Share a fraction of one cent, and any balance not
so distributed will be added to and treated as part of the next sum received by
the Depositary for distribution to record holders of Depositary Receipts then
outstanding.
 
    In the event of a distribution other than in cash, the Depositary will
distribute property received by it to the record holders of Depositary Receipts
entitled thereto, in proportion, as nearly as may be practicable, to the number
of Depositary Shares owned by such holders on the relevant record date, unless
the Depositary determines (after consultation with the Company) that it is not
feasible to make such distribution, in which case the Depositary may (with the
approval of the Company) adopt any other method for such distribution as it
deems appropriate, including the sale of such property and distribution of the
net proceeds from such sale to such holders.
 
LIQUIDATION PREFERENCE
 
    In the event of the liquidation, dissolution or winding up of the affairs of
the Company, whether voluntary or involuntary, the holders of each Depositary
Share will be entitled to the fraction of the
 
                                       20
<PAGE>
liquidation preference accorded each share of the applicable series of Preferred
Stock, as set forth in the Prospectus Supplement.
 
REDEMPTION
 
    If the series of Preferred Stock represented by the applicable series of
Depositary Shares is redeemable, such Depositary Shares will be redeemed from
the proceeds received by the Depositary resulting from the redemption, in whole
or in part, of Preferred Stock held by the Depositary. Whenever the Company
redeems any Preferred Stock held by the Depositary, the Depositary will redeem
as of the same redemption date the number of Depositary Shares representing the
Preferred Stock so redeemed. The Depositary will mail the notice of redemption
promptly upon receipt of such notice from the Company and not less than 35 nor
more than 60 days prior to the date fixed for redemption of the Preferred Stock
and the Depositary Shares to the record holders of the Depositary Receipts.
 
VOTING
 
    Promptly upon receipt of notice of any meeting at which the holders of the
series of Preferred Stock represented by the applicable series of Depositary
Shares are entitled to vote, the Depositary will mail the information contained
in such notice of meeting to the record holders of the Depositary Receipts as of
the record date for such meeting. Each such record holder of Depositary Receipts
will be entitled to instruct the Depositary as to the exercise of the voting
rights pertaining to the number of shares of Preferred Stock represented by such
record holder's Depositary Shares. The Depositary will endeavor, insofar as
practicable, to vote such Preferred Stock represented by such Depositary Shares
in accordance with such instructions, and the Company will agree to take all
action which may be deemed necessary by the Depositary in order to enable the
Depositary to do so. The Depositary will abstain from voting any of the
Preferred Stock to the extent that it does not receive specific instructions
from the holders of Depositary Receipts.
 
WITHDRAWAL OF PREFERRED STOCK
 
    Upon surrender of Depositary Receipts at the principal office of the
Depositary, upon payment of any unpaid amount due the Depositary, and subject to
the terms of the Deposit Agreement, the owner of the Depositary Shares evidenced
thereby is entitled to delivery of the number of whole shares of Preferred Stock
and all money and other property, if any, represented by such Depositary Shares.
Partial shares of Preferred Stock will not be issued. If the Depositary Receipts
delivered by the holder evidence a number of Depositary Shares in excess of the
number of Depositary Shares representing the number of whole shares of Preferred
Stock to be withdrawn, the Depositary will deliver to such holder at the same
time a new Depositary Receipt evidencing such excess number of Depositary
Shares. Holders of Preferred Stock thus withdrawn will not thereafter be
entitled to deposit such shares under the Deposit Agreement or to receive
Depositary Receipts evidencing Depositary Shares therefor.
 
AMENDMENT AND TERMINATION OF DEPOSIT AGREEMENT
 
    The form of Depositary Receipt evidencing the Depositary Shares and any
provision of the Deposit Agreement may at any time and from time to time be
amended by agreement between the Company and the Depositary. However, any
amendment which materially and adversely alters the rights of the holders (other
than any change in fees) of Depositary Shares will not be effective unless such
amendment has been approved by at least a majority of the Depositary Shares then
outstanding. No such amendment may impair the right, subject to the terms of the
Deposit Agreement, of any owner of any Depositary Shares to surrender the
Depositary Receipt evidencing such Depositary Shares with instructions to the
Depositary to deliver to the holder the Preferred Stock and all money and other
property, if any, represented thereby, except in order to comply with mandatory
provisions of applicable law. The Deposit Agreement may be terminated by the
Company or the Depositary only if (i) all outstanding Depositary Shares have
been
 
                                       21
<PAGE>
redeemed or (ii) there has been a final distribution in respect of the Preferred
Stock in connection with any dissolution of the Company and such distribution
has been made to all the holders of Depositary Shares.
 
CHARGES OF DEPOSITARY
 
    The Company will pay all transfer and other taxes and governmental charges
arising solely from the existence of the depositary arrangements. The Company
will pay charges of the Depositary in connection with the initial deposit of the
Preferred Stock and the initial issuance of the Depositary Shares, any
redemption of the Preferred Stock and all withdrawals of Preferred Stock by
owners of Depositary Shares. Holders of Depositary Receipts will pay transfer,
income and other taxes and governmental charges and certain other charges as are
provided in the Deposit Agreement to be for their accounts. In certain
circumstances, the Depositary may refuse to transfer Depositary Shares, may
withhold dividends and distributions and sell the Depositary Shares evidenced by
such Depositary Receipt if such charges are not paid.
 
MISCELLANEOUS
 
    The Depositary will forward to the holders of Depositary Receipts all
reports and communications from the Company which are delivered to the
Depositary and which the Company is required to furnish to the holders of the
Preferred Stock. In addition, the Depositary will make available for inspection
by holders of Depositary Receipts at the principal office of the Depositary, and
at such other places as it may from time to time deem advisable, any reports and
communications received from the Company which are received by the Depositary as
the holder of Preferred Stock.
 
    Neither the Depositary nor the Company assumes any obligation or will be
subject to any liability under the Deposit Agreement to holders of Depositary
Receipts other than for its negligence or willful misconduct. Neither the
Depositary nor the Company will be liable if it is prevented or delayed by law
or any circumstance beyond its control in performing its obligations under the
Deposit Agreement. The obligations of the Company and the Depositary under the
Deposit Agreement will be limited to performance in good faith of their duties
thereunder, and they will not be obligated to prosecute or defend any legal
proceeding in respect of any Depositary Shares or Preferred Stock unless
satisfactory indemnity is furnished. The Company and the Depositary may rely on
written advice of counsel or accountants, on information provided by holders of
Depositary Receipts or other persons believed in good faith to be competent to
give such information and on documents believed to be genuine and to have been
signed or presented by the proper party or parties.
 
RESIGNATION AND REMOVAL OF DEPOSITARY
 
    The Depositary may resign at any time by delivering to the Company notice of
its election to do so, and the Company may at any time remove the Depositary,
any such resignation or removal to take effect upon the appointment of a
successor Depositary and its acceptance of such appointment. Such successor
Depositary must be appointed within 60 days after delivery of the notice for
resignation or removal and must be a bank or trust company having its principal
office in the United States of America and having a combined capital and surplus
of at least $150,000,000.
 
FEDERAL INCOME TAX CONSEQUENCES
 
    Owners of the Depositary Shares will be treated for Federal income tax
purposes as if they were owners of the Preferred Stock represented by such
Depositary Shares. Accordingly, such owners will be entitled to take into
account for Federal income tax purposes income and deductions to which they
would be entitled if they were holders of such Preferred Stock. In addition, (i)
no gain or loss will be recognized for Federal income tax purposes upon the
withdrawal of Preferred Stock in exchange for Depositary Shares, (ii) the tax
basis of each share of Preferred Stock to an exchanging owner of Depositary
Shares will,
 
                                       22
<PAGE>
upon such exchange, be the same as the aggregate tax basis of the Depositary
Shares exchanged therefor, and (iii) the holding period for Preferred Stock in
the hands of an exchanging owner of Depositary Shares will include the period
during which such person owned such Depositary Shares.
 
                        DESCRIPTION OF THE CAPITAL STOCK
 
    As of the date of this Prospectus, the Company's Certificate of
Incorporation authorizes the issuance of 1,875,000,000 shares of Capital Stock,
$0.50 par value per share. As of September 30, 1997, 972,170,729 shares of
Capital Stock were outstanding.
 
    Subject to the rights of the holders of any outstanding shares of preferred
stock, holders of Capital Stock are entitled to receive such dividends, in cash,
securities, or property, as may from time to time be declared by the Board of
Directors. Subject to the provisions of the Company's By-laws, as from time to
time amended, with respect to the closing of the transfer books and the fixing
of a record date, holders of shares of Capital Stock are entitled to one vote
per share of Capital Stock held on all matters requiring a vote of the
stockholders. In the event of any liquidation, dissolution, or winding up of the
Company, either voluntary or involuntary, after payment shall have been made to
the holders of preferred stock of the full amount to which they shall be
entitled, the holders of Capital Stock shall be entitled to share ratably,
according to the number of shares held by them, in all remaining assets of the
Company available for distribution. Shares of Capital Stock are not redeemable
and have no subscription, conversion or preemptive rights.
 
                          DESCRIPTION OF THE WARRANTS
 
    The Company may issue Warrants for the purchase of Debt Securities,
Preferred Stock or Capital Stock. Warrants may be issued independently or
together with Debt Securities, Preferred Stock or Capital Stock offered by any
Prospectus Supplement and may be attached to or separate from any such
Securities. Each series of Warrants will be issued under a separate warrant
agreement (a "Warrant Agreement") to be entered into between the Company and a
bank or trust company, as warrant agent (the "Warrant Agent"). The Warrant Agent
will act solely as an agent of the Company in connection with the Warrants and
will not assume any obligation or relationship of agency or trust for or with
any holders or beneficial owners of Warrants. The following summary of certain
provisions of the Warrants does not purport to be complete and is subject to,
and qualified in its entirety by reference to, the provisions of the Warrant
Agreement that will be filed with the Commission in connection with the offering
of such Warrants.
 
DEBT WARRANTS
 
    The Prospectus Supplement relating to a particular issue of Warrants to
issue Debt Securities ("Debt Warrants") will describe the terms of such Debt
Warrants, including the following: (a) the title of such Debt Warrants; (b) the
offering price for such Debt Warrants, if any; (c) the aggregate number of such
Debt Warrants; (d) the designation and terms of the Debt Securities purchasable
upon exercise of such Debt Warrants; (e) if applicable, the designation and
terms of the Debt Securities with which such Debt Warrants are issued and the
number of such Debt Warrants issued with each such Debt Security; (f) if
applicable, the date from and after which such Debt Warrants and any Debt
Securities issued therewith will be separately transferable; (g) the principal
amount of Debt Securities purchasable upon exercise of a Debt Warrant and the
price at which such principal amount of Debt Securities may be purchased upon
exercise (which price may be payable in cash, securities, or other property);
(h) the date on which the right to exercise such Debt Warrants shall commence
and the date on which such right shall expire; (i) if applicable, the minimum or
maximum amount of such Debt Warrants that may be exercised at any one time; (j)
whether the Debt Warrants represented by the Debt Warrant certificates or Debt
Securities that may be issued upon exercise of the Debt Warrants will be issued
in registered or bearer form; (k) information with respect to book-entry
procedures, if any; (l) the currency or currency units in which the offering
price, if any, and the exercise price are payable; (m) if applicable, a
discussion of material United
 
                                       23
<PAGE>
States federal income tax considerations; (n) the antidilution provisions of
such Debt Warrants, if any; (o) the redemption or call provisions, if any,
applicable to such Debt Warrants; and (p) any additional terms of the Debt
Warrants, including terms, procedures, and limitations relating to the exchange
and exercise of such Debt Warrants.
 
STOCK WARRANTS
 
    The Prospectus Supplement relating to any particular issue of Warrants to
issue Capital Stock or Preferred Stock will describe the terms of such Warrants,
including the following: (a) the title of such Warrants; (b) the offering price
for such Warrants, if any; (c) the aggregate number of such Warrants; (d) the
designation and terms of the Capital Stock or Preferred Stock purchasable upon
exercise of such Warrants; (e) if applicable, the designation and terms of the
Securities with which such Warrants are issued and the number of such Warrants
issued with each such Security; (f) if applicable, the date from and after which
such Warrants and any Securities issued therewith will be separately
transferable; (g) the number of shares of Capital Stock or Preferred Stock
purchasable upon exercise of a Warrant and the price at which such shares may be
purchased upon exercise; (h) the date on which the right to exercise such
Warrants shall commence and the date on which such right shall expire; (i) if
applicable, the minimum or maximum amount of such Warrants that may be exercised
at any one time; (j) the currency or currency units in which the offering price,
if any, and the exercise price are payable; (k) if applicable, a discussion of
material United States federal income tax considerations; (l) the antidilution
provisions of such Warrants, if any; (m) the redemption or call provisions, if
any, applicable to such Warrants; and (n) any additional terms of the Warrants,
including terms, procedures, and limitations relating to the exchange and
exercise of such Warrants.
 
                              PLAN OF DISTRIBUTION
 
    The Company may sell the Securities in any of three ways: (i) through
underwriters; (ii) through agents; or (iii) directly to a limited number of
institutional purchasers or to a single purchaser. The Prospectus Supplement
with respect to each series of Securities will set forth the terms of the
offering of the Securities of such series, including the name or names of any
underwriters, the purchase price and the proceeds to the Company from such sale,
any underwriting discounts and other items constituting underwriters'
compensation, any initial public offering price and any discounts or concessions
allowed or reallowed or paid to dealers, and any securities exchanges on which
the Securities of such series may be listed.
 
    If underwriters are used in the sale, the Securities will be acquired by the
underwriters for their own account and may be resold from time to time in one or
more transactions, including negotiated transactions, at a fixed public offering
price or at varying prices determined at the time of sale. The Securities may be
either offered to the public through underwriting syndicates represented by
managing underwriters or by underwriters without a syndicate. Unless otherwise
set forth in the Prospectus Supplement, the obligations of the underwriters to
purchase Securities will be subject to certain conditions precedent and the
underwriters will be obligated to purchase all the Securities of a series if any
are purchased. Any initial public offering price and any discounts or
concessions allowed or reallowed or paid to dealers may be changed from time to
time.
 
    Securities may be sold directly by the Company or through agents designated
by the Company from time to time. Any agent involved in the offer or sale of the
Securities in respect of which this Prospectus is delivered will be named, and
any commissions payable by the Company to such agent will be set forth, in the
Prospectus Supplement. Unless otherwise indicated in the Prospectus Supplement,
any such agent will be acting on a best efforts basis for the period of its
appointment.
 
    If so indicated in the Prospectus Supplement, the Company will authorize
agents or underwriters to solicit offers by certain types of institutions to
purchase Securities from the Company at the public offering
 
                                       24
<PAGE>
price set forth in the Prospectus Supplement pursuant to delayed delivery
contracts providing for payment and delivery on a specified date in the future.
Such contracts will be subject only to those conditions set forth in the
Prospectus Supplement, and the Prospectus Supplement will set forth the
commissions payable for solicitation of such contracts.
 
    Agents and underwriters may be entitled under agreements entered into with
the Company to indemnification by the Company against certain civil liabilities,
including liabilities under the Securities Act of 1933, or to contribution with
respect to payments which the agents or underwriters may be required to make in
respect thereof. Agents and underwriters may be customers of, engage in
transactions with, or perform services for, the Company in the ordinary course
of business.
 
    Each series of Securities will be a new issue of securities with no
established trading market. Any underwriters to whom Securities are sold by the
Company for public offering and sale may make a market in such Securities, but
such underwriters will not be obligated to do so and may discontinue any market
making at any time without notice. No assurance can be given as to the liquidity
of the trading market for any Securities.
 
                                 LEGAL OPINIONS
 
    Except as may be otherwise specified in the Prospectus Supplement
accompanying this Prospectus, the legality of the securities will be passed upon
for the Company by David S. Hershberg, Vice President and Assistant General
Counsel of the Company. Mr. Hershberg, together with members of his family,
owns, has options to purchase and has other interests in shares of common stock
of the Company.
 
                                    EXPERTS
 
    The consolidated financial statements of the Company incorporated in this
Prospectus by reference to the Company's Annual Report on Form 10-K for the year
ended December 31, 1996 have been so incorporated in reliance on the report of
Price Waterhouse LLP, independent accountants, given on the authority of said
firm as experts in auditing and accounting.
 
                                       25
<PAGE>
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                                     -------------------------------------------
 
    No dealer, agent, salesperson or other individual has been authorized to
give any information or to make any representations other than those contained
in this Prospectus, Prospectus Supplement and any Pricing Supplement in
connection with the offer contained herein and, if given or made, such
information or representation must not be relied upon as having been authorized
by the Company or by any Distributor. This Prospectus, Prospectus Supplement,
and any Pricing Supplement shall not constitute an offer to sell or a
solicitation of an offer to buy any securities other than the securities
described in this Prospectus, Prospectus Supplement or any Pricing Supplement or
an offer to sell or the solicitation of an offer to buy any of the securities
offered hereby in any circumstances in which such offer or solicitation is
unlawful. Neither the delivery of this Prospectus, Prospectus Supplement or any
Pricing Supplement nor any sale made hereunder or thereunder shall, under any
circumstances, create any implication that the information contained herein or
therein is correct as of any time subsequent to their respective dates.
 
                                 --------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                  Page
                                                ---------
<S>                                             <C>
                  PROSPECTUS SUPPLEMENT
Description of the Notes......................        S-2
Currency Risks................................       S-13
Certain United States Federal Income Tax
  Considerations..............................       S-15
U.S. Holders..................................       S-15
Non-U.S. Holders..............................       S-20
Information Reporting and Backup
  Withholding.................................       S-21
Plan of Distribution..........................       S-22
Legal Opinions................................       S-23
                       PROSPECTUS
Available Information.........................          2
Information Incorporated by Reference.........          2
The Company...................................          3
Use of Proceeds...............................          3
Ratios of Earnings to Fixed Charges and
  Earnings to Combined Fixed Charges and
  Preferred Stock Dividends...................          3
Description of the Debt Securities............          3
Description of the Preferred Stock............         17
Description of the Depositary Shares..........         20
Description of the Capital Stock..............         23
Description of the Warrants...................         23
Plan of Distribution..........................         24
Legal Opinions................................         25
Experts.......................................         25
</TABLE>
 
                             International Business
                              Machines Corporation
 
                                 $4,300,000,000
 
                               Medium-Term Notes
 
                             PROSPECTUS SUPPLEMENT
 
                           Credit Suisse First Boston
                              Goldman, Sachs & Co.
                              Merrill Lynch & Co.
                           Morgan Stanley Dean Witter
 
                              Salomon Smith Barney
 
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