MERRILL LYNCH & CO INC
424B5, 1997-03-12
SECURITY BROKERS, DEALERS & FLOTATION COMPANIES
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<PAGE>
                                                              Rule No. 424(b)(5)
                                                      Registration No. 333-13649
PROSPECTUS SUPPLEMENT
(To Prospectus dated March 10, 1997)
 
                                     [LOGO]
                                17,500,000 UNITS
                           MERRILL LYNCH & CO., INC.
     S&P 500 MARKET INDEX TARGET-TERM SECURITIES-SM- DUE SEPTEMBER 16, 2002
                         "MITTS-REGISTERED TRADEMARK-"
 
    An aggregate principal amount of $175,000,000 of S&P 500 Market Index
Target-Term Securities-SM- due September 16, 2002 (the "Securities" or
"MITTS-Registered Trademark-") of Merrill Lynch & Co., Inc. (the "Company") are
being offered hereby. Each $10 principal amount of Securities will be deemed a
"Unit" for purposes of trading and transfer. Units will be transferable by the
Depository (as hereinafter defined), as more fully described below.
 
    The Securities are debt securities of the Company, which are being issued in
denominations of $10 and integral multiples thereof, will bear no periodic
payments of interest and will mature on September 16, 2002. At maturity, a
beneficial owner of a Security will be entitled to receive, with respect to each
Security, the principal amount thereof plus an interest payment, if any (the
"Supplemental Redemption Amount"), based on the percentage increase, if any, in
the S&P 500 Composite Stock Price Index (the "Index") over the Starting Index
Value. The Supplemental Redemption Amount will in no event be less than zero.
The Securities are not redeemable or callable by the Company prior to maturity.
At maturity, a beneficial owner of a Security will receive the principal amount
of such Security plus the Supplemental Redemption Amount, if any, however, there
will be no other payment of interest, periodic or otherwise.
 
    The Supplemental Redemption Amount payable with respect to a Security at
maturity will equal the product of (A) the principal amount of the applicable
Security, (B) the percentage increase from the Starting Index Value to the
Ending Index Value, and (C) the Participation Rate. The Starting Index Value
equals 813.65 which was the closing value of the Index on the date the
Securities were priced by the Company for initial sale to the public (the
"Pricing Date"). The Ending Index Value, as more particularly described herein,
will be the average (arithmetic mean) of the closing values of the Index on
certain days, or, if certain events occur, the closing value of the Index on a
single day prior to the maturity of the Securities. The Participation Rate
equals 101%.
 
    FOR INFORMATION AS TO THE CALCULATION OF THE SUPPLEMENTAL REDEMPTION AMOUNT
WHICH WILL BE PAID AT MATURITY, THE CALCULATION AND THE COMPOSITION OF THE
INDEX, AND CERTAIN TAX CONSEQUENCES TO BENEFICIAL OWNERS OF THE SECURITIES, SEE
"DESCRIPTION OF SECURITIES", "THE INDEX", AND "CERTAIN UNITED STATES FEDERAL
INCOME TAX CONSIDERATIONS", RESPECTIVELY, IN THIS PROSPECTUS SUPPLEMENT. FOR
OTHER INFORMATION THAT SHOULD BE CONSIDERED BY PROSPECTIVE INVESTORS, SEE "RISK
FACTORS" BEGINNING ON PAGE S-6 OF THIS PROSPECTUS SUPPLEMENT.
 
    Ownership of the Securities will be maintained in book-entry form by or
through the Depository. Beneficial owners of the Securities will not have the
right to receive physical certificates evidencing their ownership except under
the limited circumstances described herein.
 
    The Securities have been approved for listing on the New York Stock Exchange
under the symbol "MIM", subject to official notice of issuance.
                         ------------------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
    ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS.
     ANY REPRESENTATION                       TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
<TABLE>
<CAPTION>
                                                                 PRICE TO                UNDERWRITING
                                                                PUBLIC(1)                DISCOUNT(1)
<S>                                                      <C>                       <C>
Per Unit...............................................            $10                       $.20
Total..................................................        $175,000,000               $3,500,000
 
<CAPTION>
                                                               PROCEEDS TO
                                                              THE COMPANY(2)
<S>                                                      <C>
Per Unit...............................................           $9.80
Total..................................................        $171,500,000
</TABLE>
 
(1) The "Price to Public" and "Underwriting Discount" for any single transaction
    to purchase 200,000 Units or more will be $9.90 per Unit and $.10 per Unit,
    respectively.
 
(2) Before deduction of expenses payable by the Company.
 
    The Securities are offered by the Underwriter, subject to prior sale, when,
as and if issued by the Company and accepted by the Underwriter and subject to
certain other conditions. The Underwriter reserves the right to reject orders in
whole or in part. It is expected that delivery of the Securities will be made in
New York, New York on or about March 14, 1997.
 
    This Prospectus Supplement and the accompanying Prospectus may be used by
the Underwriter in connection with offers and sales related to market-making
transactions in the Securities. The Underwriter may act as principal or agent in
such transactions. Such sales will be made at prices related to prevailing
market prices at the time of sale.
                         ------------------------------
                              MERRILL LYNCH & CO.
                         ------------------------------
 
           The date of this Prospectus Supplement is March 10, 1997.
 
- ------------------------------
 
"MITTS" is a registered service mark and "Market Index Target-Term Securities"
is a service mark owned by Merrill Lynch & Co., Inc.
<PAGE>
    Certain persons participating in this offering may engage in transactions
that stabilize, maintain, or otherwise affect the price of the Securities. Such
transactions may include stabilizing, the purchase of Securities to cover
syndicate short positions and the imposition of penalty bids. For a description
of these activities, see "Underwriting."
 
    STANDARD & POOR'S ("S&P") DOES NOT GUARANTEE THE ACCURACY AND/OR THE
COMPLETENESS OF THE INDEX OR ANY DATA INCLUDED THEREIN. S&P MAKES NO WARRANTY,
EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE COMPANY, MERRILL LYNCH,
PIERCE, FENNER & SMITH INCORPORATED, HOLDERS OF THE SECURITIES, OR ANY OTHER
PERSON OR ENTITY FROM THE USE OF THE INDEX OR ANY DATA INCLUDED THEREIN IN
CONNECTION WITH THE RIGHTS LICENSED UNDER THE LICENSE AGREEMENT DESCRIBED HEREIN
OR FOR ANY OTHER USE. S&P MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND HEREBY
EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE WITH RESPECT TO THE INDEX OR ANY DATA INCLUDED THEREIN.
WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL S&P HAVE ANY LIABILITY
FOR ANY SPECIAL, PUNITIVE, INDIRECT OR CONSEQUENTIAL DAMAGE (INCLUDING LOST
PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.
                            ------------------------
 
    THE COMMISSIONER OF INSURANCE OF THE STATE OF NORTH CAROLINA HAS NOT
APPROVED OR DISAPPROVED THE OFFERING OF THE SECURITIES MADE HEREBY NOR HAS THE
COMMISSIONER PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT
OR PROSPECTUS.
 
                                      S-2
<PAGE>
                                    SUMMARY
 
    THE FOLLOWING SUMMARY DOES NOT PURPORT TO BE COMPLETE AND IS QUALIFIED IN
ITS ENTIRETY BY THE MORE DETAILED INFORMATION APPEARING ELSEWHERE IN THIS
PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS.
 
<TABLE>
<S>                          <C>
Issuer.....................  Merrill Lynch & Co., Inc.
 
Securities Offered.........  17,500,000 Units of S&P 500 Market Index Target-Term Securities
                             due September 16, 2002. The Securities are to be issued as a
                             series of Senior Debt Securities under the 1983 Indenture
                             described herein.
 
Listing....................  The Securities have been approved for listing on the New York
                             Stock Exchange under the symbol "MIM", subject to official
                             notice of issuance.
 
Denominations..............  A Unit consisting of $10 principal amount of Securities and
                             integral multiples thereof.
 
Maturity...................  September 16, 2002.
 
Payment at Maturity........  At maturity, a beneficial owner of a Security will be entitled
                             to receive (i) the principal amount thereof ($10 for each
                             Unit), and (ii) the Supplemental Redemption Amount equal to:
</TABLE>
 
<TABLE>
<S>               <C>        <C>                                   <C>        <C>
                              Ending Index Value-Starting Index
Principal Amount      X                     Value                      X       Participation
                             -----------------------------------                    Rate
                                     Starting Index Value
</TABLE>
 
<TABLE>
<S>                          <C>
                             provided, however, that in no event will the Supplemental
                             Redemption Amount be less than zero. The Starting Index Value
                             equals 813.65, which was the closing value of the Index on the
                             date the Securities were priced by the Company for initial sale
                             to the public (I.E., the Pricing Date). The Ending Index Value
                             will equal the average (arithmetic mean) of the closing value
                             of the Index on certain days prior to the maturity of the
                             Securities, or, if Market Disruption Events occur on certain
                             days, then the Ending Index Value will equal the closing value
                             of the Index on a single day. The Participation Rate equals
                             101%.
 
Index......................  The Index is published by Standard & Poor's ("S&P") and is
                             intended to provide an indication of the pattern of common
                             stock price movement. The calculation of the value of the Index
                             is based on the relative value of the aggregate market value of
                             the common stocks of 500 companies at a particular time as
                             compared to the aggregate average market value of the common
                             stocks of 500 similar companies during the base period from the
                             years 1941 through 1943. S&P may from time to time, in its sole
                             discretion, add companies to, or delete companies from, the
                             Index to fulfill the above-stated intention of providing an
                             indication of common stock price movement. "Standard &
                             Poor's-Registered Trademark-", "S&P-Registered Trademark-",
                             "S&P 500-Registered Trademark-", and "Standard & Poor's 500"
                             are trademarks of The McGraw-Hill Companies, Inc. and have been
                             licensed for use by Merrill Lynch Capital Services, Inc. and
                             the Company is an authorized sublicensee thereof. See "The
                             Index" in this Prospectus Supplement.
 
Risk Factors...............  The Securities are subject to certain special considerations.
                             Investors should be aware that if the Ending Index Value does
                             not exceed the Starting Index Value, beneficial owners of the
                             Securities will receive only the principal amount thereof at
                             maturity, even if the value of the Index at
</TABLE>
 
                                      S-3
<PAGE>
 
<TABLE>
<S>                          <C>
                             some point between the issue date and the maturity date of the
                             Securities exceeded the Starting Index Value. A beneficial
                             owner of the Securities may receive no Supplemental Redemption
                             Amount at maturity or a Supplemental Redemption Amount which is
                             below what the Company would pay as interest as of the date
                             hereof if the Company issued non-callable senior debt
                             securities with a similar maturity as that of the Securities.
                             The return of principal of the Securities at maturity and the
                             payment of the Supplemental Redemption Amount may not reflect
                             the full opportunity costs implied by inflation or other
                             factors relating to the time value of money and will not
                             produce the same yield as if the stocks underlying the Index
                             were purchased and held for the same period as the Securities.
 
                             The Index does not reflect the payment of dividends on the
                             stocks underlying it and, therefore, the yield based on the
                             Index to the maturity of the Securities will not produce the
                             same yield as if such underlying stocks were purchased and held
                             for a similar period.
 
                             There is little precedent to indicate how the Securities will
                             trade in the secondary market or whether such market will be
                             liquid. It is expected that the secondary market for the
                             Securities will be affected by the creditworthiness of the
                             Company and by a number of other factors. The trading value of
                             the Securities is expected to depend substantially on the
                             extent of the appreciation, if any, of the Index over the
                             Starting Index Value. See "The Index--Historical Data on the
                             Index" in this Prospectus Supplement for historical values of
                             the Index. If, however, Securities are sold prior to the
                             maturity date at a time when the Index exceeds the Starting
                             Index Value, the sale price may be at a substantial discount
                             from the amount expected to be payable to the beneficial owner
                             if such excess of the Index over the Starting Index Value were
                             to prevail until maturity of the Securities because of the
                             possible fluctuation of the Index between the time of such sale
                             and the time that the Ending Index Value is determined.
                             Furthermore, the price at which a beneficial owner will be able
                             to sell Securities prior to maturity may be at a discount,
                             which could be substantial, from the principal amount thereof,
                             if, at such time the Index is below, equal to or not
                             sufficiently above the Starting Index Value. A discount could
                             also result from rising interest rates.
 
                             The value of the Index and the Supplemental Redemption Amount,
                             if any, may be adversely affected by political, economic and
                             other developments that affect the stocks underlying the Index.
 
                             It is suggested that prospective investors who consider
                             purchasing the Securities should reach an investment decision
                             only after carefully considering the suitability of the
                             Securities in light of their particular circumstances.
 
Certain United States
  Federal Income Tax
  Considerations...........  Although the Securities do not provide for current payments of
                             interest, under certain final Treasury regulations applicable
                             to the Securities (the "Final Regulations"), beneficial owners
                             of the Securities will be required to include original issue
                             discount into income over the term of the Securities based upon
                             a projected payment schedule. Solely for purposes
</TABLE>
 
                                      S-4
<PAGE>
 
<TABLE>
<S>                          <C>
                             of applying the Final Regulations to the Securities, the
                             Company has determined that the projected payment schedule for
                             the Securities will consist of payment on the maturity date of
                             the principal amount thereof and a projected Supplemental
                             Redemption Amount equal to $4.3254 per Security (the "Projected
                             Supplemental Redemption Amount"). This represents an estimated
                             yield on the Securities equal to 6.64% per Security.
                             Accordingly, under the Final Regulations, for United States
                             Federal income tax purposes, beneficial owners of the
                             Securities will be required to include original issue discount
                             into income over the term of the Securities under a constant
                             yield method at a yield equal to 6.64% per annum (compounded
                             semiannually). Under the Final Regulations, at maturity of a
                             Security, in the event that the actual Supplemental Redemption
                             Amount, if any, exceeds the Projected Supplemental Redemption
                             Amount, such excess will be includible in income as original
                             issue discount on the maturity date. Alternatively, in the
                             event that the actual Supplemental Redemption Amount, if any,
                             is less than the Projected Supplemental Redemption Amount, the
                             excess of the Projected Supplemental Redemption Amount over the
                             actual Supplemental Redemption Amount will be treated first as
                             an offset to any interest otherwise includible in income by the
                             beneficial owner with respect to the Security for the taxable
                             year in which the maturity date occurs to the extent of the
                             amount of such includible income. Any remaining portion of the
                             excess of the Projected Supplemental Redemption Amount over the
                             actual Supplemental Redemption Amount that is not treated as an
                             interest offset pursuant to the foregoing rules will be
                             deductible as an ordinary loss that is not subject to the
                             limitations applicable to miscellaneous itemized deductions.
                             The projected payment schedule has been determined solely for
                             purposes of applying the Final Regulations to the Securities,
                             and is not a prediction of what the Actual Supplemental
                             Redemption Amount will be, or that the Supplemental Redemption
                             Amount will even exceed zero. An investor should carefully
                             consider the tax consequences of investing in the Securities
                             and consult its tax advisor before making such an investment.
                             See "Certain United States Federal Income Tax Considerations"
                             in this Prospectus Supplement.
</TABLE>
 
                                      S-5
<PAGE>
                                  RISK FACTORS
 
PAYMENT AT MATURITY
 
    SUPPLEMENTAL REDEMPTION AMOUNT MAY BE ZERO.  Investors should be aware that
if the Ending Index Value does not exceed the Starting Index Value, beneficial
owners of the Securities will receive only the principal amount thereof at
maturity, even if the value of the Index at some point between the issue date
and the maturity date of the Securities exceeded the Starting Index Value.
 
    YIELD MAY BE BELOW MARKET INTEREST RATES ON THE PRICING DATE.  A beneficial
owner of the Securities may receive no Supplemental Redemption Amount at
maturity, or a Supplemental Redemption Amount that is below what the Company
would pay as interest as of the Pricing Date if the Company issued non-callable
senior debt securities with a similar maturity as that of the Securities. The
return of principal of the Securities at maturity and the payment of the
Supplemental Redemption Amount, if any, may not reflect the full opportunity
costs implied by inflation or other factors relating to the time value of money.
 
    YIELD ON SECURITIES WILL NOT REFLECT DIVIDENDS.  The Index does not reflect
the payment of dividends on the stocks underlying it and therefore the yield
based on the Index to the maturity of the Securities will not produce the same
yield as if such underlying stocks were purchased and held for a similar period.
 
    STATE LAW LIMIT ON INTEREST PAID.  Because the 1983 Indenture provides that
the Securities will be governed by and construed in accordance with the laws of
New York, certain usury laws of New York State may apply. Under present New York
law, the maximum rate of interest is 25% per annum on a simple interest basis.
This limit may not apply to Securities in which $2,500,000 or more has been
invested. While the Company believes that New York law would be given effect by
a state or Federal court sitting outside of New York, state laws frequently
regulate the amount of interest that may be charged to and paid by a borrower
(including, in some cases, corporate borrowers). It is suggested that
prospective investors consult their personal advisors with respect to the
applicability of such laws. The Company will covenant for the benefit of the
Holders of the Securities, to the extent permitted by law, not to claim
voluntarily the benefits of any laws concerning usurious rates of interest
against a Holder of the Securities.
 
TRADING
 
    The Securities have been approved for listing on the New York Stock Exchange
under the symbol "MIM", subject to official notice of issuance. There is little
precedent to indicate how the Securities will trade in the secondary market or
whether such market will be liquid.
 
    It is expected that the trading value of the Securities in the secondary
market will be affected by the creditworthiness of the Company and by a number
of other factors. The trading value of the Securities is expected to depend
substantially on the extent of the appreciation, if any, of the Index over the
Starting Index Value. See "The Index--Historical Data on the Index" in this
Prospectus Supplement for historical values of the Index. If, however,
Securities are sold prior to the maturity date at a time when the Index exceeds
the Starting Index Value, the sale price may be at a substantial discount from
the amount expected to be payable to the beneficial owner if such excess of the
Index over the Starting Index Value were to prevail until maturity of the
Securities because of the possible fluctuation of the Index between the time of
such sale and the time that the Ending Index Value is determined. Furthermore,
the price at which a beneficial owner will be able to sell Securities prior to
maturity may be at a discount, which could be substantial, from the principal
amount thereof, if, at such time, the Index is below, equal to, or not
sufficiently above the Starting Index Value. A discount could also result from
rising interest rates.
 
    In addition to the value of the Index, the trading value of the Securities
may be affected by a number of interrelated factors, including the
creditworthiness of the Company and those factors listed below. The relationship
among these factors is complex, including how these factors affect the relative
value of the principal amount of the Securities to be repaid at maturity and the
value of the Supplemental Redemption
 
                                      S-6
<PAGE>
Amount, if any. Accordingly, investors should be aware that factors other than
the level of the Index are likely to affect the Securities' trading value. The
expected effect on the trading value of the Securities of each of the factors
listed below, assuming in each case that all other factors are held constant, is
as follows:
 
    INTEREST RATES.  Because the Securities repay at a minimum the principal
amount thereof at maturity, the trading value of the Securities will likely be
affected by changes in interest rates. In general, if U.S. interest rates
increase, the trading value of the Securities is expected to decrease. If U.S.
interest rates decrease, the trading value of the Securities is expected to
increase. Interest rates may also affect the U.S. economy, and, in turn, the
value of the Index. Rising interest rates may lower the value of the Index and,
thus, the Securities. Falling interest rates may increase the value of the Index
and, thus, may increase the value of the Securities.
 
    VOLATILITY OF THE INDEX.  If the volatility of the Index increases, the
trading value of the Securities is expected to increase. If the volatility of
the Index decreases, the trading value of the Securities is expected to
decrease.
 
    TIME REMAINING TO MATURITY.  The Securities may trade at a value above that
which may be inferred from the level of interest rates and the Index. This
difference will reflect a "time premium" due to expectations concerning the
value of the Index during the period prior to maturity of the Securities. As the
time remaining to maturity of the Securities decreases, however, this time
premium is expected to decrease, thus decreasing the trading value of the
Securities. In addition, the price at which a beneficial owner may be able to
sell Securities prior to maturity may be at a discount, which may be
substantial, from the principal amount of the Securities if the value of the
Index is below, equal to, or not sufficiently above the Starting Index Value.
 
    DIVIDEND RATES IN THE UNITED STATES.  If dividend rates on the stocks
comprising the Index increase, the value of the Securities is expected to
decrease. Conversely, if dividend rates on the stocks comprising the Index
decrease, the value of the Securities is expected to increase. However, in
general, rising U.S. corporate dividend rates may increase the value of the
Index and, in turn, increase the value of the Securities. Conversely, falling
U.S. dividend rates may decrease the value of the Index and, in turn, decrease
the value of the Securities.
 
    The impact of the factors specified above, excluding the value of the Index,
may offset, partially or in whole, any increase in the trading value of the
Securities that is attributable to an increase in the value of the Index. For
example, an increase in U.S. interest rates may cause the Securities to trade at
a discount from their initial offering price, even if the Index has appreciated
significantly. In general, assuming all relevant factors are held constant, the
effect on the trading value of the Securities of a given change in interest
rates, Index volatility and/or dividend rates of stocks comprising the Index is
expected to be less if it occurs later in the term of the Securities than if it
occurs earlier in the term of the Securities. The effect on the trading value of
the Securities of a given appreciation of the Index in excess of the Starting
Index Value is expected to be greater if it occurs later in the term of the
Securities than if it occurs earlier in the term of the Securities, assuming all
other relevant factors are held constant.
 
THE INDEX
 
    The value of the Index and the Supplemental Redemption Amount, if any, may
be adversely affected by political, economic and other developments that affect
the stocks underlying the Index.
 
OTHER CONSIDERATIONS
 
    It is suggested that prospective investors who consider purchasing the
Securities should reach an investment decision only after carefully considering
the suitability of the Securities in light of their particular circumstances.
 
                                      S-7
<PAGE>
    Investors should also consider the tax consequences of investing in the
Securities. See "Certain United States Federal Income Tax Considerations" in
this Prospectus Supplement.
 
    Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated
("MLPF&S") or its affiliates may from time to time engage in transactions
involving the stocks underlying the Index for their proprietary accounts and for
other accounts under their management, which may influence the value of such
stocks and therefore the value of the Securities. MLPF&S and its affiliates will
also be the counterparties to the hedge of the Company's obligations under the
Securities. See "Use of Proceeds" herein. Accordingly, under certain
circumstances, conflicts of interest may arise between MLPF&S's responsibilities
as Calculation Agent, as defined below, with respect to the Securities and its
obligations under its hedge and its status as a subsidiary of the Company. Under
certain circumstances, the duties of MLPF&S as Calculation Agent in determining
the existence of Market Disruption Events could conflict with the interests of
MLPF&S as an affiliate of the issuer of the Securities, Merrill Lynch & Co.,
Inc., and with the interests of the holders of the Securities.
 
                                      S-8
<PAGE>
                           DESCRIPTION OF SECURITIES
 
GENERAL
 
    The Securities are to be issued as a series of Senior Debt Securities under
the Senior Indenture, referred to as the "1983 Indenture", which is more fully
described in the accompanying Prospectus. The Securities will mature on
September 16, 2002.
 
    While at maturity a beneficial owner of a Security will receive the
principal amount of such Security plus the Supplemental Redemption Amount, if
any, there will be no other payment of interest, periodic or otherwise. (See
"Payment at Maturity" below.)
 
    The Securities are not subject to redemption by the Company or at the option
of any beneficial owner prior to maturity. Upon the occurrence of an Event of
Default with respect to the Securities, beneficial owners of the Securities may
accelerate the maturity of the Securities, as described under "Description of
Securities--Events of Default and Acceleration" in this Prospectus Supplement
and "Description of Debt Securities--General--Events of Default" in the
accompanying Prospectus.
 
    The Securities are to be issued in denominations of whole Units.
 
PAYMENT AT MATURITY
 
    At maturity, a beneficial owner of a Security will be entitled to receive
the principal amount thereof plus a Supplemental Redemption Amount, if any, all
as provided below. If the Ending Index Value does not exceed the Starting Index
Value, a beneficial owner of a Security will be entitled to receive only the
principal amount thereof.
 
    At maturity, a beneficial owner of a Security will be entitled to receive,
with respect to each such Security, (i) the principal amount thereof ($10 for
each Unit) and (ii) the Supplemental Redemption Amount equal in amount to:
 
<TABLE>
<S>               <C>        <C>                                     <C>        <C>
                               Ending Index Value--Starting Index
Principal Amount      X                      Value                       X       Participation
                             -------------------------------------                    Rate
                                      Starting Index Value
</TABLE>
 
provided, however, that in no event will the Supplemental Redemption Amount be
less than zero. The Starting Index Value equals 813.65, which was the closing
value of the Index on the date the Securities were priced by the Company for
initial sale to the public (I.E., the Pricing Date). The Participation Rate
equals 101%. The Ending Index Value will be determined by Merrill Lynch, Pierce,
Fenner & Smith Incorporated (the "Calculation Agent") and will equal the average
(arithmetic mean) of the closing values of the Index determined on each of the
first five Calculation Days during the Calculation Period. If there are fewer
than five Calculation Days, then the Ending Index Value will equal the average
(arithmetic mean) of the closing values of the Index on such Calculation Days,
and if there is only one Calculation Day, then the Ending Index Value will equal
the closing value of the Index on such Calculation Day. If no Calculation Days
occur during the Calculation Period because of Market Disruption Events, then
the Ending Index Value will equal the closing value of the Index determined on
the last scheduled Index Business Day in the Calculation Period, regardless of
the occurrences of a Market Disruption Event on such day. The "Calculation
Period" means the period from and including the seventh scheduled Index Business
Day prior to the maturity date to and including the second scheduled Index
Business Day prior to the maturity date. "Calculation Day" means any Index
Business Day during the Calculation Period on which a Market Disruption Event
has not occurred. For purposes of determining the Ending Index Value, an "Index
Business Day" is a day on which the New York Stock Exchange and the American
Stock Exchange are open for trading and the Index or any Successor Index, as
defined below, is calculated and published. All determinations made by the
Calculation Agent shall be at the sole discretion of the Calculation Agent and,
absent a determination by the Calculation Agent of a manifest error, shall be
conclusive for all purposes and binding on the Company and beneficial owners of
the Securities.
 
                                      S-9
<PAGE>
    The following table illustrates, for a range of hypothetical Ending Index
Values, (i) the total amount payable at maturity for each $10 principal amount
of Securities, (ii) the total rate of return to beneficial owners of the
Securities, (iii) the pretax annualized rate of return to beneficial owners of
Securities and (iv) the pretax annualized rate of return of an investment in the
stocks underlying the Index (which includes an assumed aggregate dividend yield
of 1.80% per annum, as more fully described below).
 
<TABLE>
<CAPTION>
                                          TOTAL AMOUNT       TOTAL RATE       PRETAX        PRETAX ANNUALIZED
                                       PAYABLE AT MATURITY       OF       ANNUALIZED RATE   RATE OF RETURN OF
   HYPOTHETICAL     PERCENTAGE CHANGE   PER $10 PRINCIPAL    RETURN ON     OF RETURN ON     STOCKS UNDERLYING
      ENDING        OVER THE STARTING       AMOUNT OF           THE             THE                THE
   INDEX VALUE         INDEX VALUE         SECURITIES        SECURITIES    SECURITIES(1)       INDEX(1)(2)
- ------------------  -----------------  -------------------  ------------  ---------------  --------------------
<S>                 <C>                <C>                  <C>           <C>              <C>
        406.83               -50%           $   10.00             0.00%          0.00%             -10.43%
        488.19               -40%           $   10.00             0.00%          0.00%              -7.30%
        569.56               -30%           $   10.00             0.00%          0.00%              -4.60%
        650.92               -20%           $   10.00             0.00%          0.00%              -2.23%
        732.29               -10%           $   10.00             0.00%          0.00%              -0.12%
        813.65(3)              0%           $   10.00             0.00%          0.00%               1.80%
        895.02                10%           $   11.01            10.10%          1.76%               3.56%
        976.38                20%           $   12.02            20.20%          3.37%               5.18%
      1,057.75                30%           $   13.03            30.30%          4.87%               6.69%
      1,139.11                40%           $   14.04            40.40%          6.26%               8.10%
      1,220.48                50%           $   15.05            50.50%          7.56%               9.41%
      1,301.84                60%           $   16.06            60.60%          8.79%              10.66%
      1,383.21                70%           $   17.07            70.70%          9.95%              11.83%
      1,464.57                80%           $   18.08            80.80%         11.05%              12.95%
      1,545.94                90%           $   19.09            90.90%         12.10%              14.01%
      1,627.30               100%           $   20.10           101.00%         13.09%              15.02%
      1,708.67               110%           $   21.11           111.10%         14.04%              16.00%
      1,790.03               120%           $   22.12           121.20%         14.95%              16.83%
</TABLE>
 
- ------------------------
 
(1) The annualized rates of return specified in the preceding table are
    calculated on a semiannual bond equivalent basis.
 
(2) This rate of return assumes (i) an investment of a fixed amount in the
    stocks underlying the Index with the allocation of such amount reflecting
    the current relative weights of such stocks in the Index; (ii) a percentage
    change in the aggregate price of such stocks that equals the percentage
    change in the Index from the Starting Index Value to the relevant
    hypothetical Ending Index Value; (iii) a constant dividend yield of 1.80%
    per annum, paid quarterly from the date of initial delivery of Securities,
    applied to the value of the Index at the end of each such quarter assuming
    such value increases or decreases linearly from the Starting Index Value to
    the applicable hypothetical Ending Index Value; (iv) no transaction fees or
    expenses; (v) a term for the Securities from March 14, 1997 to September 16,
    2002; and (vi) a final Index value equal to the Ending Index Value. The
    aggregate dividend yield of the stocks underlying the Index as of March 10,
    1997 was approximately 1.80%.
 
(3) This is the Starting Index Value.
 
    The above figures are for purposes of illustration only. The actual
Supplemental Redemption Amount received by investors and the total and pretax
annualized rate of return resulting therefrom will depend entirely on the actual
Ending Index Value determined by the Calculation Agent as provided herein.
Historical data regarding the Index is included in this Prospectus Supplement
under "The Index-- Historical Data on the Index".
 
                                      S-10
<PAGE>
ADJUSTMENTS TO THE INDEX; MARKET DISRUPTION EVENTS
 
    If at any time the method of calculating the Index, or the value thereof, is
changed in any material respect, or if the Index is in any other way modified so
that such Index does not, in the opinion of the Calculation Agent, fairly
represent the value of the Index had such changes or modifications not been
made, then, from and after such time, the Calculation Agent shall, at the close
of business in New York, New York, on each date that the closing value with
respect to the Ending Index Value is to be calculated, make such adjustments as,
in the good faith judgment of the Calculation Agent, may be necessary in order
to arrive at a calculation of a value of a stock index comparable to the Index
as if such changes or modifications had not been made, and calculate such
closing value with reference to the Index, as adjusted. Accordingly, if the
method of calculating the Index is modified so that the value of such Index is a
fraction or a multiple of what it would have been if it had not been modified
(E.G., due to a split in the Index), then the Calculation Agent shall adjust
such Index in order to arrive at a value of the Index as if it had not been
modified (E.G., as if such split had not occurred).
 
    "Market Disruption Event" means either of the following events, as
determined by the Calculation Agent:
 
    (i) the suspension or material limitation (limitations pursuant to New York
Stock Exchange Rule 80A (or any applicable rule or regulation enacted or
promulgated by the New York Stock Exchange or any other self regulatory
organization or the Securities and Exchange Commission of similar scope as
determined by the Calculation Agent) on trading during significant market
fluctuations shall be considered "material" for purposes of this definition), in
each case, for more than two hours of trading in 100 or more of the securities
included in the Index, or
 
    (ii) the suspension or material limitation, in each case, for more than two
hours of trading (whether by reason of movements in price otherwise exceeding
levels permitted by the relevant exchange or otherwise) in (A) futures contracts
related to the Index which are traded on the Chicago Mercantile Exchange or (B)
option contracts related to the Index which are traded on the Chicago Board
Options Exchange, Inc.
 
    For the purposes of this definition, a limitation on the hours in a trading
day and/or number of days of trading will not constitute a Market Disruption
Event if it results from an announced change in the regular business hours of
the relevant exchange.
 
DISCONTINUANCE OF THE INDEX
 
    If S&P discontinues publication of the Index and S&P or another entity
publishes a successor or substitute index that the Calculation Agent determines,
in its sole discretion, to be comparable to such Index (any such index being
referred to hereinafter as a "Successor Index"), then, upon the Calculation
Agent's notification of such determination to the Trustee and the Company, the
Calculation Agent will substitute the Successor Index as calculated by S&P or
such other entity for the Index and calculate the Ending Index Value as
described above under "Payment at Maturity". Upon any selection by the
Calculation Agent of a Successor Index, the Company shall cause notice thereof
to be given to Holders of the Securities.
 
    If S&P discontinues publication of the Index and a Successor Index is not
selected by the Calculation Agent or is no longer published on any of the
Calculation Days, the value to be substituted for the Index for any such
Calculation Day used to calculate the Supplemental Redemption Amount at maturity
will be a value computed by the Calculation Agent for each Calculation Day in
accordance with the procedures last used to calculate the Index prior to any
such discontinuance. If a Successor Index is selected or the Calculation Agent
calculates a value as a substitute for the Index as described below, such
Successor Index or value shall be substituted for the Index for all purposes,
including for purposes of determining whether a Market Disruption Event exists.
 
                                      S-11
<PAGE>
    If S&P discontinues publication of the Index prior to the period during
which the Supplemental Redemption Amount is to be determined and the Calculation
Agent determines that no Successor Index is available at such time, then on each
Business Day until the earlier to occur of (i) the determination of the Ending
Index Value and (ii) a determination by the Calculation Agent that a Successor
Index is available, the Calculation Agent shall determine the value that would
be used in computing the Supplemental Redemption Amount as described in the
preceding paragraph as if such day were a Calculation Day. The Calculation Agent
will cause notice of each such value to be published not less often than once
each month in The Wall Street Journal (or another newspaper of general
circulation), and arrange for information with respect to such values to be made
available by telephone. Notwithstanding these alternative arrangements,
discontinuance of the publication of the Index may adversely affect trading in
the Securities.
 
EVENTS OF DEFAULT AND ACCELERATION
 
    In case an Event of Default with respect to any Securities shall have
occurred and be continuing, the amount payable to a beneficial owner of a
Security upon any acceleration permitted by the Securities, with respect to each
$10 principal amount thereof, will be equal to: (i) the initial issue price
($10), plus (ii) an additional amount of contingent interest calculated as
though the date of early repayment were the maturity date of the Securities. See
"Description of Securities--Payment at Maturity" in this Prospectus Supplement.
If a bankruptcy proceeding is commenced in respect of the Company, the claim of
the beneficial owner of a Security may be limited, under Section 502(b)(2) of
Title 11 of the United States Code, to the principal amount of the Security plus
an additional amount of contingent interest calculated as though the date of the
commencement of the proceeding were the maturity date of the Securities.
 
    In case of default in payment at the maturity date of the Securities
(whether at their stated maturity or upon acceleration), from and after the
maturity date the Securities shall bear interest, payable upon demand of the
beneficial owners thereof, at the rate of 6.75% per annum (to the extent that
payment of such interest shall be legally enforceable) on the unpaid amount due
and payable on such date in accordance with the terms of the Securities to the
date payment of such amount has been made or duly provided for.
 
DEPOSITORY
 
    Upon issuance, all Securities will be represented by one or more fully
registered global securities (the "Global Securities"). Each such Global
Security will be deposited with, or on behalf of, The Depository Trust Company
("DTC"), as Depository, registered in the name of DTC or a nominee thereof.
Unless and until it is exchanged in whole or in part for Securities in
definitive form, no Global Security may be transferred except as a whole by the
Depository to a nominee of such Depository or by a nominee of such Depository to
such Depository or another nominee of such Depository or by such Depository or
any such nominee to a successor of such Depository or a nominee of such
successor.
 
    DTC has advised the Company as follows: DTC is a limited-purpose trust
company organized under the Banking Law 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, as
amended. DTC was created to hold securities of its participants ("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. DTC's Participants include securities brokers and
dealers, banks, trust companies, clearing corporations, and certain other
organizations.
 
    DTC is owned by a number of Participants and by the New York Stock Exchange,
Inc., the American Stock Exchange, Inc. and the National Association of
Securities Dealers, Inc. Access to the DTC book-entry system is also available
to others, such as banks, brokers, dealers and trust companies that clear
 
                                      S-12
<PAGE>
through or maintain a custodial relationship with a Participant, either directly
or indirectly ("Indirect Participants").
 
    Purchases of Securities must be made by or through Participants, which will
receive a credit on the records of DTC. The ownership interest of each actual
purchaser of each Security ("Beneficial Owner") is in turn to be recorded on the
Participants' or Indirect Participants' records. Beneficial Owners will not
receive written confirmation from DTC of their purchase, but Beneficial Owners
are expected to receive written confirmations providing details of the
transaction, as well as periodic statements of their holdings, from the
Participant or Indirect Participant through which the Beneficial Owner entered
into the transaction. Ownership of beneficial interests in such Global Security
will be shown on, and the transfer of such ownership interests will be effected
only through, records maintained by DTC (with respect to interests of
Participants) and on the records of Participants (with respect to interests of
persons held through Participants). The laws of some states may require that
certain purchasers of securities take physical delivery of such securities in
definitive form. Such limits and such laws may impair the ability to own,
transfer or pledge beneficial interests in Global Securities.
 
    SO LONG AS DTC, OR ITS NOMINEE, IS THE REGISTERED OWNER OF A GLOBAL
SECURITY, DTC OR ITS NOMINEE, AS THE CASE MAY BE, WILL BE CONSIDERED THE SOLE
OWNER OR HOLDER OF THE SECURITIES REPRESENTED BY SUCH GLOBAL SECURITY FOR ALL
PURPOSES UNDER THE 1983 INDENTURE. EXCEPT AS PROVIDED BELOW, BENEFICIAL OWNERS
IN A GLOBAL SECURITY WILL NOT BE ENTITLED TO HAVE THE SECURITIES REPRESENTED BY
SUCH GLOBAL SECURITIES REGISTERED IN THEIR NAMES, WILL NOT RECEIVE OR BE
ENTITLED TO RECEIVE PHYSICAL DELIVERY OF THE SECURITIES IN DEFINITIVE FORM AND
WILL NOT BE CONSIDERED THE OWNERS OR HOLDERS THEREOF UNDER THE 1983 INDENTURE,
INCLUDING FOR PURPOSES OF RECEIVING ANY REPORTS DELIVERED BY THE COMPANY OR THE
TRUSTEE PURSUANT TO THE 1983 INDENTURE. Accordingly, each Person owning a
beneficial interest in a Global Security must rely on the procedures of DTC and,
if such Person is not a Participant, on the procedures of the Participant
through which such Person owns its interest, to exercise any rights of a Holder
under the 1983 Indenture. The Company understands that under existing industry
practices, in the event that the Company requests any action of Holders or that
an owner of a beneficial interest in such a Global Security desires to give or
take any action which a Holder is entitled to give or take under the 1983
Indenture, DTC would authorize the Participants holding the relevant beneficial
interests to give or take such action, and such Participants would authorize
Beneficial Owners owning through such Participants to give or take such action
or would otherwise act upon the instructions of Beneficial Owners. Conveyance of
notices and other communications by DTC to Participants, by Participants to
Indirect Participants, and by Participants and Indirect Participants to
Beneficial Owners will be governed by arrangements among them, subject to any
statutory or regulatory requirements as may be in effect from time to time.
 
    Payment of the principal of, and any Supplemental Redemption Amount with
respect to, Securities registered in the name of DTC or its nominee will be made
to DTC or its nominee, as the case may be, as the Holder of the Global
Securities representing such Securities. None of the Company, the Trustee or any
other agent of the Company or agent of the Trustee will have any responsibility
or liability for any aspect of the records relating to or payments made on
account of beneficial ownership interests or for supervising or reviewing any
records relating to such beneficial ownership interests. The Company expects
that DTC, upon receipt of any payment of principal or any Supplemental
Redemption Amount in respect of a Global Security, will credit the accounts of
the Participants with payment in amounts proportionate to their respective
holdings in principal amount of beneficial interest in such Global Security as
shown on the records of DTC. The Company also expects that payments by
Participants to Beneficial Owners will be governed by standing customer
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.
 
    If (x) any Depository is at any time unwilling or unable to continue as
Depository and a successor depository is not appointed by the Company within 60
days, (y) the Company executes and delivers to the Trustee a Company Order to
the effect that the Global Securities shall be exchangeable or (z) an Event of
 
                                      S-13
<PAGE>
Default has occurred and is continuing with respect to the Securities, the
Global Securities will be exchangeable for Securities in definitive form of like
tenor and of an equal aggregate principal amount, in denominations of $10 and
integral multiples thereof. Such definitive Securities shall be registered in
such name or names as the Depository shall instruct the Trustee. It is expected
that such instructions may be based upon directions received by the Depository
from Participants with respect to ownership of beneficial interests in such
Global Securities.
 
SAME-DAY SETTLEMENT AND PAYMENT
 
    Settlement for the Securities will be made by the Underwriter in immediately
available funds. All payments of principal and the Supplemental Redemption
Amount, if any, will be made by the Company in immediately available funds so
long as the Securities are maintained in book-entry form.
 
                                   THE INDEX
 
    All disclosure contained in this Prospectus Supplement regarding the Index,
including, without limitation, its make-up, method of calculation and changes in
its components, is derived from publicly available information prepared by S&P.
Neither the Company nor the Underwriter takes any responsibility for the
accuracy or completeness of such information.
 
GENERAL
 
    The Index is published by S&P and is intended to provide an indication of
the pattern of common stock price movement. The calculation of the value of the
Index (discussed below in further detail) is based on the relative value of the
aggregate Market Value (as defined below) of the common stocks of 500 companies
as of a particular time as compared to the aggregate average Market Value of the
common stocks of 500 similar companies during the base period of the years 1941
through 1943. As of December 31, 1996, the 500 companies included in the Index
represented approximately 88% of the aggregate Market Value of common stocks
traded on The New York Stock Exchange; however, these 500 companies are not the
500 largest companies listed on The New York Stock Exchange and not all of these
500 companies are listed on such exchange. As of December 31, 1996, the
aggregate market value of the 500 companies included in the Index represented
approximately 71% of the aggregate market value of United States domestic,
public companies. S&P chooses companies for inclusion in the Index with the aim
of achieving a distribution by broad industry groupings that approximates the
distribution of these groupings in the common stock population of The New York
Stock Exchange, which S&P uses as an assumed model for the composition of the
total market. Relevant criteria employed by S&P include the viability of the
particular company, the extent to which that company represents the industry
group to which it is assigned, the extent to which the market price of that
Company's common stock is generally responsive to changes in the affairs of the
respective industry and the Market Value and trading activity of the common
stock of that company. As of December 31, 1996, the 500 companies included in
the Index were divided into 105 individual groups. These individual groups
comprised the following four main groups of companies (with the number of
companies currently included in each group indicated in parentheses):
Industrials (381), Utilities (40), Transportation (12) and Financial (67). S&P
may from time to time, in its sole discretion, add companies to, or delete
companies from, the Index to achieve the objectives stated above.
 
COMPUTATION OF THE INDEX
 
    S&P currently computes the Index as of a particular time as follows:
 
    (1) the product of the market price per share and the number of then
outstanding shares of each component stock is determined as of such time (such
product referred to as the "Market Value" of such stock);
 
                                      S-14
<PAGE>
    (2) the Market Value of all component stocks as of such time (as determined
under clause (1) above) are aggregated;
 
    (3) the mean average of the Market Values as of each week in the base period
of the years 1941 through 1943 of the common stock of each company in a group of
500 substantially similar companies is determined;
 
    (4) the mean average Market Values of all such common stocks over such base
period (as determined under clause (3) above) are aggregated (such aggregate
amount being referred to as the "Base Value");
 
    (5) the aggregate Market Value of all component stocks as of such time (as
determined under clause (2) above) is divided by the Base Value; and
 
    (6) the resulting quotient (expressed in decimals) is multiplied by ten.
 
While S&P currently employs the above methodology to calculate the Index, no
assurance can be given that S&P will not modify or change such methodology in a
manner that may affect the Supplemental Redemption Amount, if any, payable to
beneficial owners of Securities upon maturity or otherwise.
 
    S&P adjusts the foregoing formula to negate the effect of changes in the
Market Value of a component stock that are determined by S&P to be arbitrary or
not due to true market fluctuations. Such changes may result from such causes as
the issuance of stock dividends, the granting to shareholders of rights to
purchase additional shares of such stock, the purchase thereof by employees
pursuant to employee benefit plans, certain consolidations and acquisitions, the
granting to shareholders of rights to purchase other securities of the company,
the substitution by S&P of particular component stocks in the Index, and other
reasons. In all such cases, S&P first recalculates the aggregate Market Value of
all component stocks (after taking account of the new market price per share of
the particular component stock or the new number of outstanding shares thereof
or both, as the case may be) and then determines the New Base Value in
accordance with the following formula:
 
<TABLE>
<S>             <C>        <C>                <C>        <C>
                           New Market Value
Old Base Value      X      ----------------       =      New Base Value
                           Old Market Value
</TABLE>
 
    The result is that the Base Value is adjusted in proportion to any change in
the aggregate Market Value of all component stocks resulting from the causes
referred to above to the extent necessary to negate the effects of such causes
upon the Index.
 
HISTORICAL DATA ON THE INDEX
 
    The following table sets forth the closing values of the Index on the last
business day of each year from 1947 through 1996, as published by S&P. The
historical experience of the Index should not be taken as an indication of
future performance and no assurance can be given that the value of the Index
will not decline and thereby reduce the Supplemental Redemption Amount which may
be payable to beneficial owners of Securities at maturity or otherwise.
 
                                      S-15
<PAGE>
                          YEAR END VALUE OF THE INDEX
 
<TABLE>
<CAPTION>
YEAR       CLOSING VALUE    YEAR     CLOSING VALUE
- ---------  -------------  ---------  -------------
<S>        <C>            <C>        <C>
     1947        15.30         1972       118.05
     1948        15.20         1973        97.55
     1949        16.79         1974        68.56
     1950        20.43         1975        90.19
     1951        23.77         1976       107.46
     1952        26.57         1977        95.10
     1953        24.81         1978        96.11
     1954        35.98         1979       107.94
     1955        45.48         1980       135.76
     1956        46.67         1981       122.55
     1957        39.99         1982       140.64
     1958        55.21         1983       164.93
     1959        59.89         1984       167.24
     1960        58.11         1985       211.28
     1961        71.55         1986       242.17
     1962        63.10         1987       247.08
     1963        75.02         1988       277.72
     1964        84.75         1989       353.40
     1965        92.43         1990       330.22
     1966        80.33         1991       417.09
     1967        96.47         1992       435.71
     1968       103.86         1993       466.45
     1969        92.06         1994       459.27
     1970        92.15         1995       615.93
     1971       102.09         1996       740.74
</TABLE>
 
    The following table sets forth the level of the Index at the end of each
month, in the period from January, 1989 through February, 1997. These historical
data on the Index are not necessarily indicative of the future performance of
the Index or what the value of the Securities may be. Any historical upward or
downward trend in the level of the Index during any period set forth below is
not any indication that the Index is more or less likely to increase or decrease
at any time during the term of the Securities.
 
<TABLE>
<CAPTION>
                                                                                                        MONTH-END
                                                                                                      CLOSING LEVEL
                                                                                                      -------------
<S>                                                                                                   <C>
1989:
  January...........................................................................................       297.47
  February..........................................................................................       288.86
  March.............................................................................................       294.87
  April.............................................................................................       309.64
  May...............................................................................................       320.52
  June..............................................................................................       317.98
  July..............................................................................................       346.08
  August............................................................................................       351.45
  September.........................................................................................       349.15
  October...........................................................................................       340.36
  November..........................................................................................       345.99
  December..........................................................................................       353.40
</TABLE>
 
                                      S-16
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                        MONTH-END
                                                                                                      CLOSING LEVEL
                                                                                                      -------------
<S>                                                                                                   <C>
1990:
  January...........................................................................................       329.08
  February..........................................................................................       331.89
  March.............................................................................................       339.94
  April.............................................................................................       330.80
  May...............................................................................................       361.23
  June..............................................................................................       358.02
  July..............................................................................................       356.15
  August............................................................................................       322.56
  September.........................................................................................       306.05
  October...........................................................................................       304.00
  November..........................................................................................       322.22
  December..........................................................................................       330.22
1991:
  January...........................................................................................       343.93
  February..........................................................................................       367.04
  March.............................................................................................       375.22
  April.............................................................................................       375.35
  May...............................................................................................       389.83
  June..............................................................................................       371.16
  July..............................................................................................       387.81
  August............................................................................................       395.43
  September.........................................................................................       387.86
  October...........................................................................................       392.46
  November..........................................................................................       375.22
  December..........................................................................................       417.09
1992:
  January...........................................................................................       408.79
  February..........................................................................................       412.70
  March.............................................................................................       403.69
  April.............................................................................................       414.95
  May...............................................................................................       415.35
  June..............................................................................................       408.14
  July..............................................................................................       424.21
  August............................................................................................       414.03
  September.........................................................................................       417.80
  October...........................................................................................       418.68
  November..........................................................................................       431.35
  December..........................................................................................       435.71
</TABLE>
 
                                      S-17
<PAGE>
<TABLE>
<CAPTION>
                                                                                                        MONTH-END
                                                                                                      CLOSING LEVEL
                                                                                                      -------------
<S>                                                                                                   <C>
1993:
  January...........................................................................................       438.78
  February..........................................................................................       443.38
  March.............................................................................................       451.67
  April.............................................................................................       440.19
  May...............................................................................................       450.19
  June..............................................................................................       450.53
  July..............................................................................................       448.13
  August............................................................................................       463.56
  September.........................................................................................       458.93
  October...........................................................................................       467.83
  November..........................................................................................       461.79
  December..........................................................................................       466.45
1994:
  January...........................................................................................       481.61
  February..........................................................................................       467.14
  March.............................................................................................       445.77
  April.............................................................................................       450.91
  May...............................................................................................       456.50
  June..............................................................................................       444.27
  July..............................................................................................       458.26
  August............................................................................................       475.49
  September.........................................................................................       462.69
  October...........................................................................................       472.35
  November..........................................................................................       453.69
  December..........................................................................................       459.27
1995:
  January...........................................................................................       470.42
  February..........................................................................................       487.39
  March.............................................................................................       500.71
  April.............................................................................................       514.71
  May...............................................................................................       533.40
  June..............................................................................................       544.75
  July..............................................................................................       562.06
  August............................................................................................       561.88
  September.........................................................................................       584.41
  October...........................................................................................       581.50
  November..........................................................................................       605.37
  December..........................................................................................       615.93
</TABLE>
 
                                      S-18
<PAGE>
<TABLE>
<CAPTION>
                                                                                                        MONTH-END
                                                                                                      CLOSING LEVEL
                                                                                                      -------------
<S>                                                                                                   <C>
1996:
  January...........................................................................................       636.02
  February..........................................................................................       640.43
  March.............................................................................................       645.50
  April.............................................................................................       654.17
  May...............................................................................................       669.12
  June..............................................................................................       670.63
  July..............................................................................................       639.95
  August............................................................................................       651.99
  September.........................................................................................       687.31
  October...........................................................................................       705.27
  November..........................................................................................       757.02
  December..........................................................................................       740.74
1997:
  January...........................................................................................       786.16
  February..........................................................................................       790.82
</TABLE>
 
    The following graph sets forth the historical performance of the Index at
the end of each year from 1947 through 1996. Past movements of the Index are not
necessarily indicative of the future Index values. On March 10, 1997 the closing
level of the Index was 813.65.
 
[The graph sets forth the historical year-end closing levels of the Index from
1947 through 1996, with the vertical axis specifying the year-end closing level
of the Index in a range from 0 to 750 in increments of 50 and the horizontal
axis specifying the time period in increments of 2 years from 1947 to 1995 and
in a one year increment from 1995 to 1996.]
 
LICENSE AGREEMENT
 
    S&P and Merrill Lynch Capital Services, Inc. have entered into a
non-exclusive license agreement providing for the license to Merrill Lynch
Capital Services, Inc., in exchange for a fee, of the right to use indices owned
and published by S&P in connection with certain securities, including the
Securities, and the Company is an authorized sublicensee thereof.
 
    The license agreement between S&P and Merrill Lynch Capital Services, Inc.
provides that the following language must be stated in this Prospectus
Supplement:
 
                                      S-19
<PAGE>
        "The Securities are not sponsored, endorsed, sold or promoted by S&P.
    S&P makes no representation or warranty, express or implied, to the Holders
    of the Securities or any member of the public regarding the advisability of
    investing in securities generally or in the Securities particularly or the
    ability of the Index to track general stock market performance. S&P's only
    relationship to Merrill Lynch Capital Services, Inc. and the Company (other
    than transactions entered into in the ordinary course of business) is the
    licensing of certain servicemarks and trade names of S&P and of the Index
    which is determined, composed and calculated by S&P without regard to the
    Company or the Securities. S&P has no obligation to take the needs of the
    Company or the Holders of the Securities into consideration in determining,
    composing or calculating the Index. S&P is not responsible for and has not
    participated in the determination of the timing of the sale of the
    Securities, prices at which the Securities are to initially be sold, or
    quantities of the Securities to be issued or in the determination or
    calculation of the equation by which the Securities are to be converted into
    cash. S&P has no obligation or liability in connection with the
    administration, marketing or trading of the Securities."
 
            CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS
 
    Set forth in full below is the opinion of Brown & Wood LLP, counsel to the
Company, as to certain United States Federal income tax consequences of the
purchase, ownership and disposition of the Securities. Such opinion is based
upon laws, regulations, rulings and decisions now in effect, all of which are
subject to change (including retroactive changes in effective dates) or possible
differing interpretations. The discussion below deals only with Securities held
as capital assets and does not purport to deal with persons in special tax
situations, such as financial institutions, insurance companies, regulated
investment companies, dealers in securities or currencies, tax-exempt entities,
or persons holding Securities as a hedge against currency risks or as a position
in a "straddle" for tax purposes. It also does not deal with holders other than
original purchasers (except where otherwise specifically noted herein). The
following discussion also assumes that the issue price of the Securities, as
determined for United States Federal income tax purposes, equals the principal
amount thereof. Persons considering the purchase of the Securities should
consult their own tax advisors concerning the application of the United Stated
Federal income tax laws to their particular situations as well as any
consequences of the purchase, ownership and disposition of the Securities
arising under the laws of any other taxing jurisdiction.
 
    As used herein, the term "U.S. Holder" means a beneficial owner of a
Security that is for United States Federal income tax purposes (i) a citizen or
resident of the United States, (ii) a corporation, partnership or other entity
created or organized in or under the laws of the United States or of any
political subdivision thereof, (iii) an estate the income of which is subject to
United States Federal income taxation regardless of its source, (iv) a trust if
a court within the United States is able to exercise primary supervision of the
administration of the trust and one or more United States fiduciaries have the
authority to control all substantial decisions of the trust, or (v) any other
person whose income or gain in respect of a Security is effectively connected
with the conduct of a United States trade or business. As used herein, the term
"non-U.S. Holder" means a beneficial owner of a Security that is not a U.S.
Holder.
 
GENERAL
 
    There are no statutory provisions, regulations, published rulings or
judicial decisions addressing or involving the characterization, for United
States Federal income tax purposes, of the Securities or securities with terms
substantially the same as the Securities. However, although the matter is not
free from doubt, under current law, each Security should be treated as a debt
instrument of the Company for United States Federal income tax purposes. The
Company currently intends to treat each Security as a debt instrument of the
Company for United States Federal income tax purposes and, where required,
intends to file information returns with the Internal Revenue Service ("IRS") in
accordance with such treatment, in the absence of any change or clarification in
the law, by regulation or otherwise, requiring a different characterization of
the Securities. Prospective investors in the Securities should be aware,
 
                                      S-20
<PAGE>
however, that the IRS is not bound by the Company's characterization of the
Securities as indebtedness and the IRS could possibly take a different position
as to the proper characterization of the Securities for United States Federal
income tax purposes. The following discussion of the principal United States
Federal income tax consequences of the purchase, ownership and disposition of
the Securities is based upon the assumption that each Security will be treated
as a debt instrument of the Company for United States Federal income tax
purposes. If the Securities are not in fact treated as debt instruments of the
Company for United States Federal income tax purposes, then the United States
Federal income tax treatment of the purchase, ownership and disposition of the
Securities could differ from the treatment discussed below with the result that
the timing and character of income, gain or loss recognized in respect of a
Security could differ from the timing and character of income, gain or loss
recognized in respect of a Security had the Securities in fact been treated as
debt instruments of the Company for United States Federal income tax purposes.
 
U.S. HOLDERS
 
    On June 11, 1996, the Treasury Department issued final regulations (the
"Final Regulations") concerning the proper United States Federal income tax
treatment of contingent payment debt instruments such as the Securities, which
apply to debt instruments issued on or after August 13, 1996 and, accordingly,
will apply to the Securities. In general, the Final Regulations cause the timing
and character of income, gain or loss reported on a contingent payment debt
instrument to substantially differ from the timing and character of income, gain
or loss reported on a contingent payment debt instrument under general
principles of prior United States Federal income tax law. Specifically, the
Final Regulations generally require a U.S. Holder of such an instrument to
include future contingent and noncontingent interest payments in income as such
interest accrues based upon a projected payment schedule. Moreover, in general,
under the Final Regulations, any gain recognized by a U.S. Holder on the sale,
exchange, or retirement of a contingent payment debt instrument is treated as
ordinary income and all or a portion of any loss realized could be treated as
ordinary loss as opposed to capital loss (depending upon the circumstances). The
Final Regulations provide no definitive guidance as to whether or not an
instrument is properly characterized as a debt instrument for United States
Federal income tax purposes.
 
    In particular, solely for purposes of applying the Final Regulations to the
Securities, the Company has determined that the projected payment schedule for
the Securities will consist of payment on the maturity date of the principal
amount thereof and a projected Supplemental Redemption Amount equal to $4.3254
per Unit (the "Projected Supplemental Redemption Amount"). This represents an
estimated yield on the Securities equal to 6.64% per annum (compounded
semiannually). Accordingly, during the term of the Securities, a U.S. Holder of
a Security will be required to include in income as ordinary interest an amount
equal to the sum of the daily portions of interest on the Security that are
deemed to accrue at this estimated yield for each day during the taxable year
(or portion of the taxable year) on which the U.S. Holder holds such Security.
The amount of interest that will be deemed to accrue in any accrual period
(I.E., generally each six month period during which the Securities are
outstanding) will equal the product of this estimated yield (properly adjusted
for the length of the accrual period) and the Security's adjusted issue price
(as defined below) at the beginning of the accrual period. The daily portions of
interest will be determined by allocating to each day in the accrual period the
ratable portion of the interest that is deemed to accrue during the accrual
period. In general, for these purposes, a Security's adjusted issue price will
equal the Security's issue price (I.E., $10), increased by the interest
previously accrued on the Security. At maturity of a Security, in the event that
the actual Supplemental Redemption Amount, if any, exceeds $4.3254 per Unit
(I.E., the Projected Supplemental Redemption Amount), a U.S. Holder will be
required to include the excess of the actual Supplemental Redemption Amount over
$4.3254 per Unit (I.E., the Projected Supplemental Redemption Amount) in income
as ordinary interest on the maturity date. Alternatively, in the event that the
actual Supplemental Redemption Amount, if any, is less than $4.3254 per Unit
(I.E., the Projected Supplemental Redemption Amount), the excess of $4.3254 per
Unit (I.E., the Projected Supplemental Redemption Amount), over the actual
Supplemental Redemption Amount will be
 
                                      S-21
<PAGE>
treated first as an offset to any interest otherwise includible in income by the
U.S. Holder with respect to the Security for the taxable year in which the
maturity date occurs to the extent of the amount of such includible interest. A
U.S. Holder will be permitted to recognize and deduct, as an ordinary loss that
is not subject to the limitations applicable to miscellaneous itemized
deductions, any remaining portion of the excess of $4.3254 per Unit (I.E., the
Projected Supplemental Redemption Amount) over the actual Supplemental
Redemption Amount that is not treated as an interest offset pursuant to the
foregoing rules.
 
    Upon the sale or exchange of a Security prior to the maturity date, a U.S.
Holder will be required to recognize taxable gain or loss in an amount equal to
the difference, if any, between the amount realized by the U.S. Holder upon such
sale or exchange and the U.S. Holder's adjusted tax basis in the Security as of
the date of disposition. A U.S. Holder's adjusted tax basis in a Security
generally will equal such U.S. Holder's initial investment in the Security
increased by any interest previously included in income with respect to the
Security by the U.S. Holder. Any such taxable gain will be treated as ordinary
income. Any such taxable loss will be treated as ordinary loss to the extent of
the U.S. Holder's total interest inclusions on the Security. Any remaining loss
generally will be treated as long-term or short-term capital loss (depending
upon the U.S. Holder's holding period for the Security). All amounts includible
in income by a U.S. Holder as ordinary interest pursuant to the Final
Regulations will be treated as original issue discount.
 
    Prospective investors in the Securities should be aware that if a
significant percentage of the total aggregate amount of the Securities
originally issued is sold at a discount from the principal amount thereof, which
is not expected to be the case, then the issue price of the Securities, as
determined for United States Federal income tax purposes, may be less than the
principal amount of the Securities. In such event, if a U.S. Holder purchases a
Security in connection with the original issuance thereof for an amount equal to
the principal amount thereof, the amount of the difference between the principal
amount of the Securities and the issue price thereof generally should be
allocated by the U.S. Holder to daily portions of interest that are deemed to
accrue on each such date as an offset to such interest on each such date. In
addition, on each such date, the U.S. Holder's adjusted tax basis in the
Security will be reduced by the amount treated as an interest offset pursuant to
the foregoing rule. Alternatively, in the event that the issue price of the
Securities, as determined for United States Federal income tax purposes, equals
the principal amount thereof and a U.S. Holder purchases a Security in
connection with the original issuance thereof for an amount that is less than
the principal amount thereof, the amount of the difference between the principal
amount of the Security and the amount paid by the U.S. Holder to purchase the
Security generally should be allocated by the U.S. Holder to daily portions of
interest that are deemed to accrue on each such date as additional ordinary
interest includible in income by the U.S. Holder on each such date. In such
event, on each such date, the U.S. Holder's adjusted tax basis in the Security
will be increased by the amount treated as additional ordinary interest income.
In addition, U.S. Holders purchasing a Security at a price that differs from the
adjusted issue price of the Security as of the purchase date (E.G., subsequent
purchasers) will be subject to special rules providing for certain adjustments
to the foregoing rules and such U.S. Holders should consult their own tax
advisors concerning these rules. Moreover, all prospective investors in the
Securities should consult their own tax advisors concerning the application of
the Final Regulations to their investment in the Securities. Investors in the
Securities may also obtain the projected payment schedule, as determined by the
Company for purposes of the application of the Final Regulations to the
Securities, by submitting a written request for such information to Merrill
Lynch & Co., Inc., Attn: Darryl Colletti, Office of the Corporate Secretary, 100
Church Street, New York, New York 10080.
 
    The projected payment schedule (including both the Projected Supplemental
Redemption Amount and the estimated yield on the Securities) has been determined
solely for United States Federal income tax purposes (I.E., for purposes of
applying the Final Regulations to the Securities), and is not a prediction of
what the actual Supplemental Redemption Amount will be, or that the actual
Supplemental Redemption Amount will even exceed zero.
 
                                      S-22
<PAGE>
    The following table sets forth the amount of interest that will be deemed to
have accrued with respect to each Unit of the Securities during each accrual
period over the term of the Securities based upon the projected payment schedule
for the Securities as determined by the Company for purposes of application of
the Final Regulations to the Securities:
 
<TABLE>
<CAPTION>
                                                                                                  TOTAL INTEREST
                                                                                                      DEEMED
                                                                                                TO HAVE ACCRUED ON
                                                                          INTEREST DEEMED TO     SECURITIES AS OF
                                                                             ACCRUE DURING             END
                                                                                ACCRUAL         OF ACCRUAL PERIOD
                            ACCRUAL PERIOD                                 PERIOD (PER UNIT)        (PER UNIT)
- -----------------------------------------------------------------------  ---------------------  ------------------
<S>                                                                      <C>                    <C>
 
  March 14, 1997 through March 16, 1997................................        $  0.0018            $   0.0018
 
  March 17, 1997 through September 16, 1997............................        $  0.3338            $   0.3356
 
  September 17, 1997 through March 16, 1998............................        $  0.3413            $   0.6769
 
  March 17, 1998 through September 16, 1998............................        $  0.3545            $   1.0314
 
  September 17, 1998 through March 16, 1999............................        $  0.3662            $   1.3976
 
  March 17, 1999 through September 16, 1999............................        $  0.3785            $   1.7761
 
  September 17, 1999 through March 16, 2000............................        $  0.3909            $   2.1670
 
  March 17, 2000 through September 16, 2000............................        $  0.4040            $   2.5710
 
  September 17, 2000 through March 16, 2001............................        $  0.4173            $   2.9883
 
  March 17, 2001 through September 16, 2001............................        $  0.4312            $   3.4195
 
  September 17, 2001 through March 16, 2002............................        $  0.4456            $   3.8651
 
  March 17, 2002 through September 16, 2002............................        $  0.4603            $   4.3254
</TABLE>
 
- ------------------------
 
Projected Supplemental Redemption Amount = $4.3254 per Unit.
 
NON-U.S. HOLDERS
 
    A non-U.S. Holder will not be subject to United States Federal income taxes
on payments of principal, premium (if any) or interest (including original issue
discount, if any) on a Security, unless such non-U.S. Holder is a direct or
indirect 10% or greater shareholder of the Company, a controlled foreign
corporation related to the Company or a bank receiving interest described in
section 881(c)(3)(A) of the Internal Revenue Code of 1986, as amended. However,
income allocable to non-U.S. Holders will generally be subject to annual tax
reporting on IRS Form 1042S. For a non-U.S. Holder to qualify for the exemption
from taxation, the last United States payor in the chain of payment prior to
payment to a non-U.S. Holder (the "Withholding Agent") must have received in the
year in which a payment of interest or principal occurs, or in either of the two
preceding calendar years, a statement that (i) is signed by the beneficial owner
of the Security under penalties of perjury, (ii) certifies that such owner is
not a U.S. Holder and (iii) provides the name and address of the beneficial
owner. The statement may be made on an IRS Form W-8 or a substantially similar
form, and the beneficial owner must inform the Withholding Agent of any change
in the information on the statement within 30 days of such change. If a Security
is held through a securities clearing organization or certain other financial
institutions, the organization or institution may provide a signed statement to
the Withholding Agent. However, in such case, the signed statement must be
accompanied by a copy of the IRS Form W-8 or the substitute form provided by the
beneficial owner to the organization or institution. The Treasury Department is
considering implementation of further certification requirements.
 
    Under current law, a Security will not be includible in the estate of a
non-U.S. Holder unless the individual is a direct or indirect 10% or greater
shareholder of the Company or, at the time of such
 
                                      S-23
<PAGE>
individual's death, payments in respect of such Security would have been
effectively connected with the conduct by such individual of a trade or business
in the United States.
 
BACKUP WITHHOLDING
 
    Backup withholding of United States Federal income tax at a rate of 31% may
apply to payments made in respect of the Securities to registered owners who are
not "exempt recipients" and who fail to provide certain identifying information
(such as the registered owner's taxpayer identification number) in the required
manner. Generally, individuals are not exempt recipients, whereas corporations
and certain other entities generally are exempt recipients. Payments made in
respect of the Securities to a U.S. Holder must be reported to the IRS, unless
the U.S. Holder is an exempt recipient or establishes an exemption. Compliance
with the identification procedures described in the preceding section would
establish an exemption from backup withholding for those non-U.S. Holders who
are not exempt recipients.
 
    In addition, upon the sale of a Security to (or through) a broker, the
broker must withhold 31% of the entire purchase price, unless either (i) the
broker determines that the seller is a corporation or other exempt recipient or
(ii) the seller provides, in the required manner, certain identifying
information and, in the case of a non-U.S. Holder, certifies that such seller is
a non-U.S. Holder (and certain other conditions are met). Such a sale must also
be reported by the broker to the IRS, unless either (i) the broker determines
that the seller is an exempt recipient or (ii) the seller certifies its non-U.S.
status (and certain other conditions are met). Certification of the registered
owner's non-U.S. status would be made normally on an IRS Form W-8 under
penalties of perjury, although in certain cases it may be possible to submit
other documentary evidence.
 
    Any amounts withheld under the backup withholding rules from a payment to a
beneficial owner would be allowed as a refund or a credit against such
beneficial owner's United States Federal income tax provided the required
information is furnished to the IRS.
 
                                USE OF PROCEEDS
 
    The net proceeds from the sale of the Securities will be used as described
under "Use of Proceeds" in the attached Prospectus and to hedge market risks of
the Company affecting the value of the Supplemental Redemption Amount.
 
                                  UNDERWRITING
 
    Merrill Lynch, Pierce, Fenner & Smith Incorporated (the "Underwriter") has
agreed, subject to the terms and conditions of the Underwriting Agreement and a
Terms Agreement, to purchase from the Company $175,000,000 aggregate principal
amount of Securities. The Underwriting Agreement provides that the obligations
of the Underwriter are subject to certain conditions precedent and that the
Underwriter will be obligated to purchase all of the Securities if any are
purchased.
 
    The Underwriter has advised the Company that it proposes initially to offer
all or part of the Securities directly to the public at the offering prices set
forth on the cover page of this Prospectus Supplement and to certain dealers at
such prices less a concession not in excess of 1.5% of the principal amount of
the Securities. After the initial public offering, the public offering price and
concession may be changed.
 
    The underwriting of the Securities will conform to the requirements set
forth in the applicable sections of Rule 2720 of the Conduct Rules of the
National Association of Securities Dealers, Inc.
 
    The Underwriter is permitted to engage in certain transactions that
stabilize the price of the Securities. Such transactions consist of bids or
purchases for the purpose of pegging, fixing or maintaining the price of the
Securities.
 
                                      S-24
<PAGE>
    If the Underwriter creates a short position in the Securities in connection
with the offering, i.e., if they sell more Units of the Securities than are set
forth on the cover page of this Prospectus Supplement, the Underwriter may
reduce that short position by purchasing Units of the Securities in the open
market.
 
    The Underwriter may also impose a penalty bid on certain selling group
members. This means that if the Underwriter purchases Units of the Securities in
the open market to reduce the Underwriter's short position or to stabilize the
price of the Securities, they may reclaim the amount of the selling concession
from the selling group members who sold those Units as part of the offering.
 
    In general, purchases of a security for the purpose of stabilization or to
reduce a short position could cause the price of the security to be higher than
it might be in the absence of such purchases. The imposition of a penalty bid
might also have an effect on the price of a security to the extent that it were
to discourage resales of the security.
 
    Neither the Company nor the Underwriter makes any representation or
prediction as to the direction or magnitude of any effect that the transactions
described above may have on the price of the Securities. In addition, neither
the Company nor the Underwriter makes any representation that the Underwriter
will engage in such transactions or that such transactions, once commenced, will
not be discontinued without notice.
 
                             VALIDITY OF SECURITIES
 
    The validity of the Securities will be passed upon for the Company and for
the Underwriter by Brown & Wood LLP, New York, New York.
 
                                      S-25
<PAGE>
PROSPECTUS
 
                                     [LOGO]
                           MERRILL LYNCH & CO., INC.
                          DEBT SECURITIES AND WARRANTS
 
    Merrill Lynch & Co., Inc. (the "Company") intends to sell from time to time
up to $2,546,322,579 aggregate principal amount (or net proceeds in the case of
warrants and in the case of securities issued at an original issue discount), or
its equivalent in such foreign currencies or units of two or more currencies,
based on the applicable exchange rate at the time of offering, as shall be
designated by the Company at the time of offering, of its senior debt securities
("Senior Debt Securities"), subordinated debt securities ("Subordinated Debt
Securities" and, together with the Senior Debt Securities, the "Debt
Securities"), warrants to purchase Debt Securities ("Debt Warrants"), warrants
entitling the holders thereof to receive from the Company a payment or delivery
determined by reference to decreases or increases in the level of an index or
portfolio based on one or more equity or debt securities (including the price or
yield of such securities), any statistical measure of economic or financial
performance (including any consumer price, currency or mortgage index) or the
price or value of any commodity or a combination thereof (the "Index Warrants")
and warrants to receive from the Company the cash value in U.S. dollars of the
right to purchase ("Currency Call Warrants") or to sell ("Currency Put Warrants"
and, together with the Currency Call Warrants, the "Currency Warrants") such
foreign currencies or units of two or more currencies as shall be designated by
the Company at the time of offering. The Debt Securities, Debt Warrants, Index
Warrants and Currency Warrants, which are collectively called the "Securities",
may be offered either jointly or separately and will be offered to the public on
terms determined by market conditions at the time of sale and set forth in a
prospectus supplement.
 
    The Securities will be unsecured and, except in the case of Subordinated
Debt Securities, will rank equally with all other unsecured and unsubordinated
indebtedness of the Company. The Subordinated Debt Securities will be
subordinated to all existing and future Senior Indebtedness of the Company.
 
    Each issue of Securities may vary, where applicable, as to aggregate
principal amount, maturity date, public offering or purchase price, interest
rate or rates, if any, and timing of payments thereof, provision for redemption,
sinking fund requirements, if any, exercise provisions, currencies of
denomination or currencies otherwise applicable thereto, the option of the
Company to satisfy its obligations upon maturity or any redemption or required
repurchase or in connection with any exchange provisions by delivering
securities (whether or not issued by, or the obligations of, the Company) or a
combination of cash, other securities and/or property and any other variable
terms and method of distribution. The accompanying Prospectus Supplement (the
"Prospectus Supplement") sets forth the specific terms with regard to the
Securities in respect of which this Prospectus is being delivered. The Company
may elect to deliver to purchasers of Securities an abbreviated term sheet
setting forth a description of the Securities being offered, or a summary
thereof (a "Terms Sheet"), instead of a Prospectus Supplement. This Prospectus
may be delivered prior to or concurrently with a Terms Sheet.
 
                             ---------------------
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 through Merrill Lynch & Co., Merrill Lynch,
Pierce, Fenner & Smith Incorporated ("MLPF&S") as agent or may be offered and
reoffered through, or through underwriting syndicates managed or co-managed by,
one or more underwriters, including MLPF&S, or directly to purchasers by the
Company. The Securities may not be sold without delivery of a Prospectus
Supplement describing such issue of Securities, the method and terms of offering
thereof or of a Terms Sheet, the names of any agents or underwriters and any
applicable commissions or discounts.
 
                             ---------------------
 
                 The date of this Prospectus is March 10, 1997.
<PAGE>
                             AVAILABLE INFORMATION
 
    The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports and other information with the Securities and Exchange
Commission (the "Commission"). Reports, proxy and information statements and
other information filed by the Company can be inspected and copied at the public
reference facilities maintained by the Commission at Room 1024, 450 Fifth
Street, N.W., Washington, D.C. 20549, and at the following Regional Offices of
the Commission: Midwest Regional Office, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661-2511 and Northeast Regional Office, Seven World Trade
Center, New York, New York 10048. Copies of such material can be obtained from
the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549 at prescribed rates. Reports, proxy and information
statements and other information concerning the Company may also be inspected at
the offices of the New York Stock Exchange, the American Stock Exchange, the
Chicago Stock Exchange and the Pacific Stock Exchange. The Commission maintains
a Web site at http://www.sec.gov containing reports, proxy and information
statements and other information regarding registrants, including the Company,
that file electronically with the Commission.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The Company's Annual Report on Form 10-K for the year ended December 29,
1995, Quarterly Reports on Form 10-Q for the periods ended March 29, 1996, June
28, 1996 and September 27, 1996, and Current Reports on Form 8-K dated January
17, 1996, January 22, 1996, February 7, 1996, February 29, 1996, March 1, 1996,
March 12, 1996, March 18, 1996, April 1, 1996, April 15, 1996, May 1, 1996, May
13, 1996, May 15, 1996, May 28, 1996 (as amended by Form 8-K/A filed June 7,
1996), July 9, 1996, July 16, 1996, July 31, 1996, August 12, 1996, October 15,
1996, October 30, 1996, January 13, 1997, January 27, 1997 and February 25, 1997
filed pursuant to Section 13 of the Exchange Act, are hereby incorporated by
reference into this Prospectus.
 
    All documents filed by the Company pursuant to Section 13(a), 13(c), 14 or
15(d) of the Exchange Act subsequent to the date hereof and prior to the
termination of the offering of the Securities shall be deemed to be incorporated
by reference into this Prospectus and to be a part hereof from the date of
filing of such documents. Any statement contained in a document incorporated or
deemed to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Prospectus to the extent that a statement
contained herein or in any other subsequently filed document which also is or is
deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Prospectus.
 
    THE COMPANY WILL PROVIDE WITHOUT CHARGE TO EACH PERSON TO WHOM THIS
PROSPECTUS IS DELIVERED, ON WRITTEN OR ORAL REQUEST OF SUCH PERSON, A COPY
(WITHOUT EXHIBITS OTHER THAN EXHIBITS SPECIFICALLY INCORPORATED BY REFERENCE) OF
ANY OR ALL DOCUMENTS INCORPORATED BY REFERENCE INTO THIS PROSPECTUS. REQUESTS
FOR SUCH COPIES SHOULD BE DIRECTED TO MR. GREGORY T. RUSSO, SECRETARY, MERRILL
LYNCH & CO., INC., 100 CHURCH STREET, 12TH FLOOR, NEW YORK, NEW YORK 10080-6512;
TELEPHONE NUMBER (212) 602-8435.
 
                                       2
<PAGE>
                           MERRILL LYNCH & CO., INC.
 
    Merrill Lynch & Co., Inc. is a holding company that, through its
subsidiaries and affiliates, provides investment, financing, insurance, and
related services on a global basis. Its principal subsidiary, MLPF&S, one of the
largest securities firms in the world, is a leading broker in securities,
options contracts, and commodity and financial futures contracts; a leading
dealer in options and in corporate and municipal securities; a leading
investment banking firm that provides advice to, and raises capital for, its
clients; and an underwriter of selected insurance products. Other subsidiaries
provide financial services on a global basis similar to those of MLPF&S and are
engaged in such other activities as international banking, lending, and
providing other investment and financing services. Merrill Lynch International
Incorporated, through subsidiaries and affiliates, provides investment,
financing, and related services outside the United States and Canada. Merrill
Lynch Asset Management, LP and Fund Asset Management, LP together constitute one
of the largest mutual fund managers in the world and provide investment advisory
services. Merrill Lynch Government Securities Inc. is a primary dealer in
obligations issued or guaranteed by the U.S. Government and its agencies.
Merrill Lynch Capital Services, Inc., Merrill Lynch Derivative Products AG, and
Merrill Lynch Capital Markets PLC are the Company's primary derivative product
dealers and enter into interest rate and currency swaps and other derivative
transactions as intermediaries and as principals. The Company's insurance
underwriting operations consist of the underwriting of life insurance and
annuity products. Banking, trust, and mortgage lending operations conducted
through subsidiaries of the Company include issuing certificates of deposit,
offering money market deposit accounts, making secured loans, and providing
foreign exchange facilities and other related services.
 
    The principal executive office of the Company is located at World Financial
Center, North Tower, 250 Vesey Street, New York, New York 10281; its telephone
number is (212) 449-1000.
 
                                USE OF PROCEEDS
 
    The Company intends to use the net proceeds from the sale of the Securities
for general corporate purposes. Such uses may include the funding of investments
in, or extensions of credit to, its subsidiaries, the funding of assets held by
the Company or its subsidiaries, including securities inventories, customer
receivables and loans (including business loans, home equity loans and loans in
connection with investment banking-related merger and acquisition activities)
and the lengthening of the average maturity of the Company's borrowings
(including the refunding of maturing indebtedness). The precise amount and
timing of investments in, and extensions of credit to, its subsidiaries will
depend upon their funding requirements and the availability of other funds to
the Company and its subsidiaries. Pending such applications, the net proceeds
will be temporarily invested or applied to the reduction of short-term
indebtedness. A substantial portion of the proceeds from the sale of any
Currency Warrants or Index Warrants may be used to hedge market risks with
respect to such Warrants. Management of the Company expects that it will, on a
recurrent basis, engage in additional financings as the need arises to finance
the growth of the Company or to lengthen the average maturity of its borrowings.
To the extent that Securities being purchased for resale by MLPF&S are not
resold, the aggregate proceeds to the Company and its subsidiaries would be
reduced.
 
                                       3
<PAGE>
                         SUMMARY FINANCIAL INFORMATION
 
    The following summary of consolidated financial information was derived
from, and is qualified in its entirety by reference to, the financial statements
and other information and data contained in the Company's Annual Report on Form
10-K for the year ended December 29, 1995 and the Current Reports on Form 8-K
dated January 27, 1997 and February 25, 1997 (the "Current Reports"). See
"Incorporation of Certain Documents by Reference". The information for 1996 is
derived from the audited financial statements and other information and data to
be included in the Company's Annual Report to Stockholders of the Company for
the year ended December 27, 1996. In the opinion of management of the Company,
all adjustments (consisting only of normal recurring accruals and the
nonreoccuring $40 million pretax lease charge related to the resolution of
Olympic & York's bankruptcy in the fourth quarter of 1996) necessary for a fair
statement of the results of operations have been included. The year-end results
include 52 weeks for 1992, 1994, 1995, and 1996 and 53 weeks for 1993.
 
    The Company conducts its business in highly volatile markets. Consequently,
the Company's results can be affected by many factors, including general market
conditions, the liquidity of secondary markets, the level and volatility of
interest rates and currency values, the valuation of securities positions,
competitive conditions, and the size, number, and timing of transactions. In
periods of unfavorable market activity, profitability can be adversely affected
because certain expenses remain relatively fixed. As a result, net earnings and
revenues can vary significantly from period to period.
<TABLE>
<CAPTION>
                                                                        YEAR ENDED LAST FRIDAY IN DECEMBER
                                                            ----------------------------------------------------------
<S>                                                         <C>         <C>         <C>         <C>         <C>
                                                               1992        1993        1994        1995        1996
                                                            ----------  ----------  ----------  ----------  ----------
 
<CAPTION>
                                                                           (IN MILLIONS, EXCEPT RATIOS)
<S>                                                         <C>         <C>         <C>         <C>         <C>
Revenues..................................................  $   13,413  $   16,588  $   18,234  $   21,513  $   25,011
Net revenues(1)...........................................  $    8,577  $   10,558  $    9,625  $   10,265  $   13,116
Earnings before income taxes and cumulative effect of
  changes in accounting principles(2).....................  $    1,621  $    2,425  $    1,730  $    1,811  $    2,566
Cumulative effect of changes in accounting principles (net
  of applicable income taxes)(2)..........................  $      (58) $      (35)     --          --          --
Net earnings(2)...........................................  $      894  $    1,359  $    1,017  $    1,114  $    1,619
Ratio of earnings to fixed charges(3).....................         1.3         1.4         1.2         1.2         1.2
Total assets(4)...........................................  $  107,024  $  152,910  $  163,749  $  176,857  $  213,016
Long-term borrowings(5)...................................  $   10,871  $   13,469  $   14,863  $   17,340  $   26,102
Stockholders' equity(6)...................................  $    4,569  $    5,486  $    5,818  $    6,141  $    6,892
</TABLE>
 
- ------------------------
 
(1) Net revenues are revenues net of interest expense.
 
(2) Net earnings for 1992 have been reduced by $58 million to reflect the
    adoption of Statement of Financial Accounting Standards ("SFAS") No. 106,
    EMPLOYERS' ACCOUNTING FOR POSTRETIREMENT BENEFITS OTHER THAN PENSIONS, and
    SFAS No. 109, ACCOUNTING FOR INCOME TAXES. Net earnings for 1993 were
    reduced by $35 million to reflect the adoption of SFAS No. 112, EMPLOYERS'
    ACCOUNTING FOR POSTEMPLOYMENT BENEFITS.
 
(3) For the purpose of calculating the ratio of earnings to fixed charges,
    "earnings" consists of earnings from continuing operations before income
    taxes and fixed charges. "Fixed charges" consists of interest costs,
    amortization of debt expense, preferred stock dividend requirements of
    majority-owned subsidiaries, and that portion of rentals estimated to be
    representative of the interest factor.
 
(4) In 1994, the Company adopted Financial Accounting Standards Board ("FASB")
    Interpretation No. 39, "OFFSETTING OF AMOUNTS RELATED TO CERTAIN CONTRACTS",
    and FASB Interpretation No. 41, "OFFSETTING
 
                                         (FOOTNOTES CONTINUED ON FOLLOWING PAGE)
 
                                       4
<PAGE>
(FOOTNOTES CONTINUED FROM PRECEDING PAGE)
 
    OF AMOUNTS RELATED TO CERTAIN REPURCHASE AND REVERSE REPURCHASE AGREEMENTS",
    which increased assets and liabilities at December 30, 1994 by approximately
    $8,500 million.
 
(5) To finance its diverse activities, the Company and certain of its
    subsidiaries borrow substantial amounts of short-term funds on a regular
    basis. Although the amount of short-term borrowings varies significantly
    with the level of general business activity, on December 27, 1996, $2,733
    million of bank loans and $23,538 million of commercial paper were
    outstanding. In addition, certain of the Company's subsidiaries lend
    securities and enter into repurchase agreements to obtain financing. At
    December 27, 1996, cash deposits for securities loaned and securities sold
    under agreements to repurchase amounted to $2,751 million and $62,669
    million, respectively. From December 28, 1996 to March 10, 1997, long-term
    borrowings, net of repayments and repurchases, increased by approximately
    $3,142 million.
 
(6) On February 6, 1997, Merrill Lynch Preferred Capital Trust II (the "Trust"),
    issued $300 million of 8% Trust Originated Preferred Securities(SM). The
    Trust holds preferred securities of a partnership, which is also a
    subsidiary of the Company. The assets of the partnership consist primarily
    of debt securities of the Company and one of its eligible controlled
    affiliates. The Company has guaranteed, on a subordinated basis, certain
    payments by the Trust and the partnership.
 
FISCAL YEAR 1996
 
    Financial markets were strong in 1996, led by a stable U.S. economy and
heightened individual and institutional investor activity. Low interest rates
and strong cash flows into mutual funds combined to make 1996 a record-breaking
year in U.S. equity markets and led to significant gains in most international
markets.
 
    Net earnings for 1996 were a record $1,619 million, up 45% from $1,114
million in 1995. Earnings per common share were $8.20 primary and $8.06 fully
diluted, compared with $5.44 primary and $5.42 fully diluted in 1995. Total
revenues were a record $25,011 million, up 16% from 1995. Net revenues (revenues
after interest expense) totaled $13,116 million in 1996, up 28% from 1995.
 
    Commission revenues increased 21% to a record $3,786 million from $3,126
million in 1995, due primarily to higher levels of listed and over-the-counter
securities transactions and mutual fund commissions. Commissions from listed and
over-the-counter securities were up as a result of higher trading volumes on the
New York Stock Exchange, Nasdaq, and most international exchanges. Mutual fund
commission revenues rose primarily as a result of strong sales of U.S. funds and
higher distribution fees from deferred-charge funds.
 
    Interest and dividend revenues increased 6% to $12,899 million from $12,221
million in 1995. Interest expense, which includes dividend expense, increased 6%
from 1995 to $11,895 million. Net interest and dividend profit was $1,004
million, up 3% from $973 million in 1995 resulting from increases in interest
spreads as the U.S. Treasury yield curve steepened for a portion of the year.
 
    Principal transactions revenues rose 37% from 1995 to a record $3,454
million due to favorable market conditions, highlighted by rising stock prices,
low interest rates, and narrowing credit spreads. These conditions led to
increased customer demand particularly for higher yielding securities.
 
    Equities and equity derivative trading revenues increased 25% to $1,138
million, due principally to higher trading revenues from international equities
and over-the-counter securities. International equities trading revenues
benefited primarily from improved market conditions and increased capacity due
to the
 
- ------------------------
 
(SM)  Trust Originated Preferred Securities is a service mark of Merrill Lynch &
    Co., Inc.
 
                                       5
<PAGE>
acquisition of Smith New Court PLC in the third quarter of 1995.
Over-the-counter securities trading revenues were up as a result of record
Nasdaq volume.
 
    Taxable fixed-income trading revenues increased 87% to $966 million
primarily due to higher revenues from mortgage-backed products, non-U.S.
governments and agencies securities, and money market instruments. The increase
in mortgage-backed securities trading revenues was attributable to improved
liquidity in this market and increased customer demand compared with a year ago.
Trading revenues from non-U.S. governments and agencies securities advanced due
in part to increased customer demand for higher yields associated with emerging
market securities. Trading revenues from money market instruments benefited from
increased floating-rate note activity in European markets.
 
    Interest rate and currency swaps trading revenues rose 22% to $893 million
due to higher revenues from both non-U.S. and U.S. dollar-denominated
transactions. Municipal securities revenues were up 19% to $323 million as a
result of increased investor demand for tax-advantaged products. Foreign
exchange and commodities trading revenues, in the aggregate, increased 56% to
$134 million. Higher volume led to increased foreign exchange trading revenues
as the U.S. dollar strengthened versus most currencies, particularly the
Japanese yen and German mark.
 
    Investment banking revenues advanced to a record $1,945 million, up 49% from
$1,308 million in 1995. Underwriting fees were higher in virtually all products
due to record equity and debt underwriting volume industrywide. Strategic
services revenues benefited from strong merger and acquisition activity
industrywide and significant gains in market share.
 
    Asset management and portfolio service fees were a record $2,261 million in
1996, up 20% from $1,890 million in 1995, as a result of strong inflows of
client assets and net asset appreciation. Other revenues were up 48% to $666
million primarily due to an increase in realized investment gains of $171
million, of which $155 million related to the sale of one-third of Merrill
Lynch's minority interest in Bloomberg L.P., and a $40 million increase in gains
from real estate transactions, primarily sales of mortgages to Real Estate
Mortgage Investment Conduits ("REMICs").
 
    Non-interest expenses were $10,550 million, up 25% from $8,454 million in
1995. Compensation and benefits expense, which represented approximately 64% of
non-interest expenses, increased 27% during 1996 due to higher incentive and
production-related compensation and an 8% increase in the number of full-time
employees. Compensation and benefits expense was 51.1% of net revenues for 1996,
compared with 51.3% in 1995.
 
    Non-interest expenses excluding compensation and benefits, rose 21% to
$3,846 million. A significant component of the increase related to strategic
investments to upgrade technology and processing capabilities.
 
    Communications and equipment rental expense was up 15% from 1995 due to
increased computer maintenance costs related to system initiatives, as well as
higher levels of business activity. Depreciation and amortization expense rose
12% from 1995 due primarily to purchases of technology-related equipment during
the past year. Higher systems development and management consulting costs led to
a 37% increase in professional fees.
 
    Occupancy costs rose 13%, primarily as a result of a non-recurring pretax
charge of $40 million. This charge related to the rejection in bankruptcy of the
long-term sublease agreement with Olympia & York for space in the World
Financial Center, South Tower, which led to a difference between expected rents
from sublessees and the Company's lease obligation for the space. Advertising
and market development costs rose 29% due to increased international travel and
higher production-related recognition programs. Brokerage, clearing, and
exchange fees were up 15% as a result of higher securities volume, particularly
in international markets. Other expenses were up 23% from 1995 due in part to
provisions related to various business activities and goodwill amortization.
 
                                       6
<PAGE>
    Income tax expense totaled $947 million for 1996. The effective tax rate in
1996 was 36.9%, compared with 38.5% a year ago. The effective tax rate decreased
in 1996 primarily as a result of tax benefits associated with non-U.S.
operations.
 
CERTAIN BALANCE SHEET INFORMATION AS OF DECEMBER 27, 1996
 
    The Company believes that its equity base is adequate relative to the level
and composition of its assets and the mix of its business.
 
    In the normal course of business, the Company underwrites, trades, and holds
non-investment grade cash instruments in connection with its investment banking,
market-making, and derivative structuring activities. During the past year,
non-investment grade trading inventories increased to satisfy growing client
demand for higher-yielding investments, including emerging market and other
non-U.S. securities.
 
    At December 27, 1996, non-investment grade trading assets and liabilities
for cash instruments were $7,585 million and $905 million, respectively.
Derivative contracts in a gain position with non-investment grade counterparties
totaled $2,470 million at December 27, 1996. Collateral held to mitigate the
risk associated with these derivative contracts was $848 million.
 
    Derivatives may also expose the Company to credit risk related to the
underlying security. In addition, derivatives may subject the Company to credit
spread risk in that changes in the credit quality of the underlying securities
may impact the derivatives' fair values. At December 27, 1996, trading assets
and liabilities, representing the fair value of derivatives with non-investment
grade underlying securities, were $63 million and $64 million, respectively.
Derivative contracts with notional amounts (calculated as notional subject to
the strike or reference price) of $2,895 million were subject to credit risk
related to non-investment grade underlying securities at December 27, 1996.
 
    The Company engages in hedging strategies to reduce its exposure associated
with non-investment grade positions by purchasing an option to sell the related
security or by entering into an offsetting derivative contract. The Company also
uses non-investment grade trading inventories, principally non-U.S. governments
and agencies securities, to hedge the exposure arising from structured
derivative transactions. At December 27, 1996, the credit risk of non-investment
grade positions was hedged by cash instruments of $905 million and derivatives
with notional amounts of $1,311 million.
 
    At December 27, 1996, the largest non-investment grade concentration
consisted of various sovereign and corporate issues of a South American country
totaling $1.0 billion, which primarily represented hedges of other financial
instruments. At December 27, 1996, the Company held an aggregate carrying value
of $133 million in debt and equity securities of issuers in various stages of
bankruptcy proceedings or in default, of which 58% resulted from the Company's
market-making activities in such securities. In addition, the Company held
distressed bank loans totaling $351 million at year-end 1996.
 
    The Company's insurance subsidiaries also hold non-investment grade
securities that are classified as available-for-sale and are carried at fair
value. Non-investment grade insurance securities were $206 million at December
27, 1996.
 
    At December 27, 1996 the carrying value of extensions of credit provided to
corporations entering into leveraged transactions aggregated $340 million
(excluding unutilized lines of credit and other lending commitments of $301
million), consisting primarily of senior term and subordinated financings to 36
medium-sized companies. Subsequent to year end, a $125 million loan commitment
was extended, which was reduced to $10 million through syndication. At December
27, 1996, the Company had a bridge loan outstanding of $31 million, which was
repaid subsequent to year end. Direct equity investment made in conjunction with
the Company's investment and merchant banking activities aggregated $113 million
at December 27, 1996, representing investments in 48 enterprises. At December
27, 1996, the Company held interests in partnerships, totaling $104 million
(recorded on the cost basis) that invest in highly leveraged
 
                                       7
<PAGE>
transactions. At December 27, 1996, the Company also committed to invest an
additional $82 million in partnerships that invest in leveraged transactions.
 
    No one industry sector accounted for more than 24% of total non-investment
grade positions and highly leveraged transactions.
 
                         DESCRIPTION OF DEBT SECURITIES
 
    Unless otherwise specified in a Prospectus Supplement, the Senior Debt
Securities are to be issued under an indenture (the "1983 Indenture"), dated as
of April 1, 1983, as amended and restated, between the Company and The Chase
Manhattan Bank, formerly known as Chemical Bank (successor by merger to
Manufacturers Hanover Trust Company), as trustee or issued under an indenture
(the "1993 Indenture"), dated as of October 1, 1993, between the Company and The
Chase Manhattan Bank (successor by merger to The Chase Manhattan Bank, N.A.), as
trustee (each, a "Senior Debt Trustee"). The 1983 Indenture and the 1993
Indenture are referred to herein as the "Senior Indentures". The Subordinated
Debt Securities are to be issued under an indenture (the "Subordinated
Indenture"), between the Company and The Chase Manhattan Bank, formerly known as
Chemical Bank, as trustee (the "Subordinated Debt Trustee"). The Senior Debt
Securities and Subordinated Debt Securities may also be issued under one or more
other indentures (each, a "Subsequent Indenture") and have one or more other
trustees (each, a "Subsequent Trustee"). Any Subsequent Indenture relating to
Senior Debt Securities will have terms and conditions identical in all material
respects to the above-referenced Senior Indentures and any Subsequent Indenture
relating to Subordinated Debt Securities will have terms and conditions
identical in all material respects to the above-referenced Subordinated
Indenture, including, but not limited to, the applicable terms and conditions
described below. Any Subsequent Indenture relating to a series of Debt
Securities, and the trustee with respect thereto, will be identified in the
applicable Prospectus Supplement. The Senior Indentures, the Subordinated
Indenture and any Subsequent Indentures (whether senior or subordinated) are
referred to herein as the "Indentures"; and the Senior Debt Trustees, the
Subordinated Debt Trustee and any Subsequent Trustees are referred to herein as
the "Trustees". A copy of each Indenture is filed (or, in the case of a
Subsequent Indenture, will be filed) as an exhibit to the registration
statements relating to the Securities (collectively, the "Registration
Statement"). The following summaries of certain provisions of the Indentures do
not purport to be complete and are subject to, and are qualified in their
entirety by reference to, all provisions of the respective Indentures, including
the definitions therein of certain terms.
 
GENERAL
 
    Each Indenture provides that Debt Securities (Senior Debt Securities in the
case of the Senior Indentures or a Subsequent Indenture for Senior Debt
Securities, and Subordinated Debt Securities in the case of the Subordinated
Indenture or a Subsequent Indenture for Subordinated Debt Securities) may be
issued thereunder, without limitation as to aggregate principal amount, in one
or more series, by the Company from time to time upon satisfaction of certain
conditions precedent, including the delivery by the Company to the applicable
Trustee of a resolution of the Board of Directors, or the Executive Committee
thereof, of the Company which fixes or provides for the establishment of terms
of such Debt Securities, including: (1) the aggregate principal amount of such
Debt Securities and whether there is any limit upon the aggregate principal
amount of such Debt Securities that may be subsequently issued; (2) the date on
which such Debt Securities will mature; (3) the principal amount payable with
respect to such Debt Securities whether at maturity or upon earlier
acceleration, and whether such principal amount will be determined with
reference to an index, formula or other method; (4) the rate or rates per annum
(which may be fixed or variable) at which such Debt Securities will bear
interest, if any; (5) the dates on which such interest, if any, will be payable;
(6) the provisions for redemption of such Debt Securities, if any, the
redemption price and any remarketing arrangements relating thereto; (7) the
sinking fund requirements, if any, with respect to such Debt Securities; (8)
whether such Debt Securities are denominated or provide for payment in United
States dollars or a foreign currency or units of two or more of such foreign
currencies;
 
                                       8
<PAGE>
(9) the form (registered or bearer or both) in which such Debt Securities may be
issued and any restrictions applicable to the exchange of one form for another
and to the offer, sale and delivery of such Debt Securities in either form; (10)
whether and under what circumstances the Company will pay additional amounts
("Additional Amounts") in respect of such Debt Securities held by a person who
is not a U.S. person (as defined in the Prospectus Supplement, as applicable) in
respect of specified taxes, assessments or other governmental charges and
whether the Company has the option to redeem the affected Debt Securities rather
than pay such Additional Amounts; (11) whether such Debt Securities are to be
issued in global form; (12) the title of the Debt Securities and the series of
which such Debt Securities shall be a part; (13) the denominations of such Debt
Securities and (14) whether, and the terms and conditions relating to when, the
Company may satisfy certain of its obligations with respect to such Debt
Securities with regard to payment upon maturity, or any redemption or required
repurchase or in connection with any exchange provisions by delivering to the
Holders thereof securities (whether or not issued by, or the obligation of, the
Company) or a combination of cash, other securities and/or property. Reference
is made to the Prospectus Supplement for the terms of the Debt Securities being
offered thereby, including whether such Debt Securities are Senior Debt
Securities or Subordinated Debt Securities. The Company may elect to deliver to
purchasers of Securities a Terms Sheet instead of a Prospectus. This Prospectus
may be delivered prior to or concurrently with a Terms Sheet. Debt Securities
may also be issued under the Indentures upon the exercise of Debt Warrants. See
"Description of Debt Warrants". Nothing in the Indentures or in the terms of the
Debt Securities will prohibit the issuance of securities representing
subordinated indebtedness that is senior or junior to the Subordinated Debt
Securities.
 
    The Debt Securities will be issued, to the extent provided in the Prospectus
Supplement, in fully registered form without coupons, and/or in bearer form with
or without coupons, and in denominations set forth in the Prospectus Supplement.
No service charge will be made for any registration of transfer of registered
Debt Securities or exchange of Debt Securities, but the Company may require
payment of a sum sufficient to cover any tax or other governmental charges that
may be imposed in connection therewith. Each Indenture provides that Debt
Securities issued thereunder may be issued in global form. If any series of Debt
Securities is issuable in global form, the applicable Prospectus Supplement will
describe the circumstances, if any, under which beneficial owners of interest in
any such global Debt Securities may exchange such interests for Debt Securities
of such series and of like tenor and principal amount in any authorized form and
denomination. Principal of, and any premium, Additional Amounts and interest on,
a global Debt Security will be payable in the manner described in the applicable
Prospectus Supplement.
 
    The provisions of the Indentures described above provide the Company with
the ability, in addition to the ability to issue Debt Securities with terms
different from those of Debt Securities previously issued, to "reopen" a
previous issue of a series of Debt Securities and issue additional Debt
Securities of such series.
 
    The Senior Debt Securities will be unsecured and will rank pari passu with
all other unsecured and unsubordinated indebtedness of the Company. The
Subordinated Debt Securities will be unsecured and will be subordinated to all
existing and future Senior Indebtedness (as defined below) of the Company. Since
the Company is a holding company, the right of the Company, and hence the right
of creditors of the Company (including the Holders of the Debt Securities), to
participate in any distribution of the assets of any subsidiary upon its
liquidation or reorganization or otherwise is necessarily subject to the prior
claims of creditors of the subsidiary, except to the extent that claims of the
Company itself as a creditor of the subsidiary may be recognized. In addition,
dividends, loans and advances from certain subsidiaries, including MLPF&S, to
the Company are restricted by net capital requirements under the Exchange Act
and under rules of certain exchanges and other regulatory bodies.
 
    Principal and any interest, premium and Additional Amounts will be payable
in the manner, at the places and subject to the restrictions set forth in the
applicable Indenture, the Debt Securities and the Prospectus Supplement relating
thereto, provided that payment of any interest and any Additional
 
                                       9
<PAGE>
Amounts may be made at the option of the Company by check mailed to the holders
of registered Debt Securities at their registered addresses.
 
    Debt Securities may be presented for exchange, and registered Debt
Securities may be presented for transfer, in the manner, at the places and
subject to the restrictions set forth in the applicable Indenture, the Debt
Securities and the Prospectus Supplement relating thereto. Debt Securities in
bearer form and the coupons, if any, pertaining thereto will be transferable by
delivery. No service charge will be made for any transfer or exchange of Debt
Securities, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.
 
MERGER AND CONSOLIDATION
 
    The Company may consolidate or merge with or into any other corporation, and
the Company may sell, lease or convey all or substantially all of its assets to
any corporation, provided that (i) the corporation (if other than the Company)
formed by or resulting from any such consolidation or merger or which shall have
received such assets shall be a corporation organized and existing under the
laws of the United States of America or a state thereof and shall assume payment
of the principal of, and any premium, Additional Amounts or interest on, the
Debt Securities and the performance and observance of all of the covenants and
conditions of the Indentures to be performed or observed by the Company, and
(ii) the Company or such successor corporation, as the case may be, shall not
immediately thereafter be in default under the Indentures.
 
MODIFICATION AND WAIVER
 
    Modification and amendment of each Indenture may be effected by the Company
and the applicable Trustee with the consent of the Holders of at least 66 2/3%
in principal amount of the Outstanding Debt Securities of each series issued
pursuant to such Indenture and affected thereby, provided that no such
modification or amendment may, without the consent of the Holder of each
Outstanding Debt Security affected thereby, (a) change the Stated Maturity of,
or any installment of interest or Additional Amounts on, any Debt Security or
any premium payable on the redemption thereof, or change the Redemption Price;
(b) reduce the principal amount of, or the interest or Additional Amounts
payable on, any Debt Security or reduce the amount of principal which could be
declared due and payable prior to the Stated Maturity; (c) change the place or
currency of any payment of principal of, or any premium, interest or Additional
Amounts on, any Debt Security; (d) impair the right to institute suit for the
enforcement of any payment on or with respect to any Debt Security; (e) reduce
the percentage in principal amount of the Outstanding Debt Securities of any
series, the consent of whose Holders is required to modify or amend such
Indenture; or (f) modify the foregoing requirements or reduce the percentage of
Outstanding Debt Securities necessary to waive any past default to less than a
majority. No modification or amendment of the Subordinated Indenture or any
Subsequent Indenture for Subordinated Debt Securities may adversely affect the
rights of any Holder of Senior Indebtedness without the consent of such Holder.
Except with respect to certain fundamental provisions, the Holders of at least a
majority in principal amount of Outstanding Debt Securities of any series may,
with respect to such series, waive past defaults under the applicable Indenture
and waive compliance by the Company with certain provisions of such Indenture.
 
EVENTS OF DEFAULT
 
    Under each Indenture, the following will be Events of Default with respect
to Debt Securities of any series issued thereunder: (a) default in the payment
of any interest or Additional Amounts upon any Debt Security of that series when
due, and such default has continued for 30 days; (b) default in the payment of
any principal of or premium, if any, on any Debt Security of that series when
due; (c) default in the deposit of any sinking fund payment, when due, in
respect of any Debt Security of that series; (d) default in the performance of
any other covenant of the Company contained in such Indenture for the benefit of
such series or in the Debt Securities of such series, and such default has
continued for 60 days after written
 
                                       10
<PAGE>
notice as provided in such Indenture; (e) certain events in bankruptcy,
insolvency or reorganization; and (f) any other Event of Default provided with
respect to Debt Securities of that series. The applicable Trustee or the Holders
of 25% in principal amount of the Outstanding Debt Securities of that series may
declare the principal amount (or such lesser amount as may be provided for in
the Debt Securities of that series) of all Outstanding Debt Securities of that
series and the interest accrued thereon and Additional Amounts payable in
respect thereof, if any, to be due and payable immediately if an Event of
Default with respect to Debt Securities of such series shall occur and be
continuing at the time of declaration. At any time after a declaration of
acceleration has been made with respect to Debt Securities of any series but
before a judgment or decree for payment of money due has been obtained by the
applicable Trustee, the Holders of a majority in principal amount of the
Outstanding Debt Securities of that series may rescind any declaration of
acceleration and its consequences, provided that all payments due (other than
those due as a result of acceleration) have been made and all Events of Default
have been remedied or waived. Any Event of Default with respect to Debt
Securities of any series may be waived by the Holders of a majority in principal
amount of all Outstanding Debt Securities of that series, except in a case of
failure to pay principal of or premium, if any, or interest or Additional
Amounts, if any, on any Debt Security of that series for which payment had not
been subsequently made or in respect of a covenant or provision which cannot be
modified or amended without the consent of the Holder of each Outstanding Debt
Security of such series affected.
 
    The Holders of a majority in principal amount of the Outstanding Debt
Securities of a series may direct the time, method and place of conducting any
proceeding for any remedy available to the applicable Trustee or exercising any
trust or power conferred on such Trustee with respect to Debt Securities of such
series, provided that such direction shall not be in conflict with any rule of
law or the applicable Indenture. Subject to the provisions of each Indenture
relating to the duties of the appropriate Trustee, before proceeding to exercise
any right or power under an Indenture at the direction of such Holders, the
applicable Trustee shall be entitled to receive from such Holders reasonable
security or indemnity against the costs, expenses and liabilities which might be
incurred by it in complying with any such direction.
 
    The Company will be required to furnish to each Trustee annually a statement
as to the fulfillment by the Company of all of its obligations under the
applicable Indenture.
 
SPECIAL TERMS RELATING TO THE SENIOR DEBT SECURITIES
 
LIMITATIONS UPON LIENS
 
    The Senior Indentures provide that the Company may not, and may not permit
any Subsidiary to, create, assume, incur or permit to exist any indebtedness for
borrowed money secured by a pledge, lien or other encumbrance (except for
certain liens specifically permitted by the Senior Indentures) on the Voting
Stock owned directly or indirectly by the Company of any Subsidiary (other than
a Subsidiary which, at the time of incurrence of such secured indebtedness, has
a net worth of less than $3,000,000) without making effective provision whereby
the Outstanding Senior Debt Securities will be secured equally and ratably with
such secured indebtedness.
 
LIMITATIONS ON DISPOSITION OF VOTING STOCK OF, AND MERGER AND SALE OF ASSETS BY,
  MLPF&S
 
    The Senior Indentures provide that the Company may not sell, transfer or
otherwise dispose of any Voting Stock of MLPF&S or permit MLPF&S to issue, sell
or otherwise dispose of any of its Voting Stock, unless, after giving effect to
any such transaction, MLPF&S remains a Controlled Subsidiary (defined in the
Senior Indentures to mean a corporation more than 80% of the outstanding shares
of Voting Stock of which are owned directly or indirectly by the Company). In
addition, the Senior Indentures provide that the Company may not permit MLPF&S
to (i) merge or consolidate, unless the surviving company is a Controlled
Subsidiary, or (ii) convey or transfer its properties and assets substantially
as an entirety, except to one or more Controlled Subsidiaries.
 
                                       11
<PAGE>
SPECIAL TERMS RELATING TO THE SUBORDINATED DEBT SECURITIES
 
    Upon any distribution of assets of the Company resulting from any
dissolution, winding up, liquidation or reorganization, payments on Subordinated
Debt Securities are to be subordinated to the extent provided in the
Subordinated Indenture in right of payment to the prior payment in full of all
Senior Indebtedness, but the obligation of the Company to make payments on the
Subordinated Debt Securities will not otherwise be affected. No payment on
Subordinated Debt Securities may be made at any time when there is a default in
the payment of any principal, premium, interest, Additional Amounts, if any, or
sinking fund of or on any Senior Indebtedness. Holders of Subordinated Debt
Securities will be subrogated to the rights of holders of Senior Indebtedness to
the extent of payments made on Senior Indebtedness upon any distribution of
assets in any such proceedings out of the distributive shares of Subordinated
Debt Securities. By reason of such subordination, in the event of a distribution
of assets upon insolvency, certain creditors of the Company may recover more,
ratably, than Holders of Subordinated Debt Securities.
 
    Senior Indebtedness is defined in the Subordinated Indenture as the
principal of, premium, if any, and unpaid interest on (a) indebtedness of the
Company (including indebtedness of others guaranteed by the Company), other than
the Subordinated Debt Securities, whether outstanding on the date of execution
of the Subordinated Indenture or thereafter created, incurred, assumed or
guaranteed, (i) for money owing to banks, (ii) for money borrowed from sources
other than banks or (iii) in connection with the acquisition by the Company or a
subsidiary of assets of any kind except in the ordinary course of business,
unless in the instrument creating or evidencing the same or pursuant to which
the same is outstanding it is provided that such indebtedness is not superior in
right of payment to the Subordinated Debt Securities, and (b) renewals,
extensions, modifications and refundings of any such indebtedness. As of
December 27, 1996, a total of approximately $53.0 billion of the Company's
indebtedness would have been Senior Indebtedness as so defined.
 
                          DESCRIPTION OF DEBT WARRANTS
 
    The Company may issue, together with Debt Securities, Currency Warrants or
Index Warrants or separately, Debt Warrants for the purchase of Debt Securities.
The Debt Warrants are to be issued under debt warrant agreements (each a "Debt
Warrant Agreement") to be entered into between the Company and a bank or trust
company, as debt warrant agent (the "Debt Warrant Agent"), all as shall be set
forth in the Prospectus Supplement relating to Debt Warrants being offered
thereby. A copy of the form of Debt Warrant Agreement, including the form of
warrant certificates representing the Debt Warrants (the "Debt Warrant
Certificates"), reflecting the alternative provisions to be included in the Debt
Warrant Agreements that will be entered into with respect to particular
offerings of Debt Warrants, is filed as an exhibit to the Registration
Statement. The following summaries of certain provisions of the Debt Warrant
Agreement and the Debt Warrant Certificates do not purport to be complete and
are subject to, and are qualified in their entirety by reference to, all the
provisions of the Debt Warrant Agreement and the Debt Warrant Certificates,
respectively, including the definitions therein of certain terms.
 
GENERAL
 
    The applicable Prospectus Supplement will describe the terms of Debt
Warrants offered thereby, the Debt Warrant Agreement relating to such Debt
Warrants and the Debt Warrant Certificates representing such Debt Warrants,
including the following: (1) the designation, aggregate principal amount, price
at which such principal amount may be purchased upon exercise and terms of the
Debt Securities purchasable upon exercise of such Debt Warrants, including
whether such Debt Securities are Senior Debt Securities or Subordinated Debt
Securities, and the procedures and conditions relating to the exercise of such
Debt Warrants; (2) the designation and terms of any related Debt Securities with
which such Debt Warrants are issued, including whether such Debt Securities are
Senior Debt Securities or Subordinated Debt Securities, the number of such Debt
Warrants issued with each such Debt Security, and the Indenture under which the
Debt Securities will be issued; (3) the date, if any, on and after which such
Debt Warrants
 
                                       12
<PAGE>
and the related Debt Securities will be separately transferable; (4) the date on
which the right to exercise such Debt Warrants shall commence and the date on
which such right shall expire (the "Expiration Date"); (5) if the Debt
Securities purchasable upon exercise of such Debt Warrants are original issue
discount Debt Securities, a discussion of Federal income tax considerations
applicable thereto; and (6) whether the Debt Warrants represented by the Debt
Warrant Certificates will be issued in registered or bearer form, and, if
registered, where they may be transferred and registered.
 
    Debt Warrant Certificates will be exchangeable for new Debt Warrant
Certificates of different denominations and Debt Warrants may be exercised at
the corporate trust office of the Debt Warrant Agent or any other office
indicated in the Prospectus Supplement. Prior to the exercise of their Debt
Warrants, holders of Debt Warrants will not have any of the rights of Holders of
the Debt Securities purchasable upon such exercise and will not be entitled to
payments of principal of, and any premium, Additional Amounts, if any, or
interest on, the Debt Securities purchasable upon such exercise.
 
EXERCISE OF DEBT WARRANTS
 
    Each Debt Warrant will entitle the Holder to purchase for cash such
principal amount of Debt Securities at such exercise price as shall in each case
be set forth in, or be determinable as set forth in, the Prospectus Supplement
relating to the Debt Warrants offered thereby. Debt Warrants may be exercised at
any time up to the close of business on the Expiration Date set forth in the
Prospectus Supplement relating to the Debt Warrants offered thereby. After the
close of business on the Expiration Date, unexercised Debt Warrants will become
void.
 
    Debt Warrants may be exercised as set forth in the Prospectus Supplement
relating to the Debt Warrants offered thereby. Upon receipt of payment and the
Debt Warrant Certificate properly completed and duly executed at the corporate
trust office of the Debt Warrant Agent or any other office indicated in the
Prospectus Supplement, the Company will, as soon as practicable, forward the
Debt Securities purchasable upon such exercise. If less than all of the Debt
Warrants represented by such Debt Warrant Certificate are exercised, a new Debt
Warrant Certificate will be issued for the remaining amount of Debt Warrants.
 
                        DESCRIPTION OF CURRENCY WARRANTS
 
    The Company may issue, together with Debt Securities, Debt Warrants or Index
Warrants or separately, Currency Warrants either in the form of Currency Put
Warrants entitling the Holders thereof to receive from the Company the cash
settlement value in U.S. dollars of the right to sell a specified amount of a
specified foreign currency or currency units for a specified amount of U.S.
dollars, or in the form of Currency Call Warrants entitling the Holders thereof
to receive from the Company the cash settlement value in U.S. dollars of the
right to purchase a specified amount of a specified foreign currency or units of
two or more currencies for a specified amount of U.S. dollars. The Currency
Warrants are to be issued under a currency put warrant agreement or a currency
call warrant agreement, as applicable (each a "Currency Warrant Agreement"), to
be entered into between the Company and a bank or trust company, as currency
warrant agent (the "Currency Warrant Agent"), all as shall be set forth in the
applicable Prospectus Supplement. Copies of the forms of Currency Put Warrant
Agreement and Currency Call Warrant Agreement, including the forms of warrant
certificates representing the Currency Put Warrants and Currency Call Warrants
(the "Currency Warrant Certificates"), reflecting the provisions to be included
in the Currency Warrant Agreements that will be entered into with respect to
particular offerings of Currency Warrants, are filed as exhibits to the
Registration Statement. The following summaries of certain provisions of the
Currency Warrant Agreements and the Currency Warrant Certificates do not purport
to be complete and are subject to, and are qualified in their entirety by
reference to, all the provisions of the Currency Warrant Agreements and the
Currency Warrant Certificates, respectively, including the definitions therein
of certain terms.
 
                                       13
<PAGE>
GENERAL
 
    The applicable Prospectus Supplement will describe the terms of Currency
Warrants offered thereby, the Currency Warrant Agreement relating to such
Currency Warrants and the Currency Warrant Certificates representing such
Currency Warrants, including the following: (1) whether such Currency Warrants
shall be Currency Put Warrants, Currency Call Warrants, or both; (2) the formula
for determining the cash settlement value of each Currency Warrant; (3) the
procedures and conditions relating to the exercise of such Currency Warrants;
(4) the circumstances which will cause the Currency Warrants to be deemed to be
automatically exercised; (5) any minimum number of Currency Warrants which must
be exercised at any one time, other than upon automatic exercise; and (6) the
date on which the right to exercise such Currency Warrants shall commence and
the date on which such right shall expire (the "Expiration Date"), provided that
the commencement date and the Expiration Date may be the same date.
 
BOOK-ENTRY PROCEDURES
 
    Except as may otherwise be provided in an applicable Prospectus Supplement,
the Currency Warrants will be issued in the form of global Currency Warrant
Certificates, registered in the name of a depository or its nominee. Beneficial
owners will not be entitled to receive definitive certificates representing
Currency Warrants. Ownership of a Currency Warrant will be recorded on or
through the records of the brokerage firm or other entity that maintains a
beneficial owner's account. In turn, the total number of Currency Warrants held
by an individual brokerage firm for its clients will be maintained on the
records of the depository in the name of such brokerage firm or its agent.
Transfer of ownership of any Currency Warrant will be effected only through the
selling beneficial owner's brokerage firm.
 
EXERCISE OF CURRENCY WARRANTS
 
    Each Currency Warrant will entitle the Holder to the cash settlement value
of such Currency Warrant on the applicable Exercise Date, in each case as such
terms will be defined in the applicable Prospectus Supplement. If a Currency
Warrant has more than one exercise date and is not exercised prior to 1:30 P.M.,
New York City time, on the fifth New York Business Day preceding the Expiration
Date, Currency Warrants will be deemed automatically exercised.
 
LISTING
 
    Each issue of Currency Warrants will be listed on a national securities
exchange, subject only to official notice of issuance, as a condition of sale of
any such Currency Warrants. In the event that the Currency Warrants are delisted
from, or permanently suspended from trading on, such exchange, the Expiration
Date for such Currency Warrants will be the date such delisting or trading
suspension becomes effective and Currency Warrants not previously exercised will
be deemed automatically exercised on the business day immediately preceding such
Expiration Date. The applicable Currency Warrant Agreement will contain a
covenant of the Company not to seek delisting of the Currency Warrants, or
suspension of their trading, on such exchange.
 
                         DESCRIPTION OF INDEX WARRANTS
 
    The Company may issue from time to time Index Warrants consisting of put
warrants (the "Index Put Warrants") or call warrants (the "Index Call
Warrants"). The Index Warrants will entitle the holders to receive from the
Company a payment or delivery, subject to applicable law, determined by
reference to decreases (in the case of Index Put Warrants) or to increases (in
the case of Index Call Warrants) in the level of an index or portfolio based on
one or more equity or debt securities (including the price or yield of such
securities), any statistical measure of economic or financial performance
(including any consumer price, currency or mortgage index) or the price or value
of any commodity or any combination thereof (the "Index"). Unless otherwise
specified in the accompanying Prospectus Supplement, payments, if any, upon
 
                                       14
<PAGE>
exercise (or deemed exercise) of the Index Warrants will be made in U.S.
dollars. The Index Warrants will be offered on terms to be determined at the
time of sale.
 
GENERAL
 
    The applicable Prospectus Supplement will describe the Index Warrant
Agreement or Index Warrant Trust Indenture (each as defined below), as the case
may be, relating to the Index Warrants being offered thereby and the terms of
such Index Warrants, including, without limitation: (i) whether the Index
Warrants to be issued will be Index Put Warrants, Index Call Warrants or both;
(ii) the aggregate number and initial public offering price or purchase price;
(iii) the Index for such Index Warrants; (iv) whether the Index Warrants will be
deemed exercised as of a specified date or whether the Index Warrants may be
exercised during a period and the date on which the right to exercise such Index
Warrants commences and the date on which such right expires; (v) the manner in
which such Index Warrants may be exercised and any restrictions on, or other
special provisions relating to, the exercise of such Index Warrants; (vi) the
minimum number, if any, of such Index Warrants exercisable at any one time;
(vii) the maximum number, if any, of such Index Warrants that may, subject to
the Company's election, be exercised by all Index Warrantholders (or by any
person or entity) on any day; (viii) any provisions permitting an Index
Warrantholder to condition an exercise notice on the absence of certain
specified changes in the level of the applicable Index after the exercise date,
any provisions permitting the Company to suspend exercise of such Index Warrants
based on market conditions or other circumstances and any other special
provision relating to the exercise of such Index Warrants; (ix) any provisions
for the automatic exercise of such Index Warrants other than at expiration; (x)
any provisions permitting the Company to cancel such Index Warrants upon the
occurrence of certain events; (xi) any additional circumstances which would
constitute an Event of Default with respect to such Index Warrants; (xii) the
method of determining (a) the payment or delivery, if any, to be made in
connection with the exercise or deemed exercise of such Index Warrants (the
"Settlement Value"), (b) the minimum payment or delivery, if any, to be made
upon expiration of such Index Warrants (the "Minimum Expiration Value"), (c) the
payment or delivery to be made upon the exercise of any right which the Company
may have to cancel such Index Warrants and (d) the value of the Index; (xiii) in
the case of Index Warrants relating to an Index for which the trading prices of
underlying securities, commodities or rates are expressed in a foreign currency,
the method of converting amounts in the relevant foreign currency or currencies
into U.S. dollars (or such other currency or composite currency in which the
Index Warrants are payable); (xiv) the method of providing for a substitute
index or otherwise determining the payment or delivery, if any, to be made in
connection with the exercise of such Index Warrants if the Index changes or
ceases to be made available by its publisher; (xv) the time or times at which
payment or delivery, if any, will be made in respect of such Index Warrants
following exercise or deemed exercise; (xvi) the self-regulatory organization on
which such Index Warrants will be traded, if any; (xvii) any provisions for
issuing such Index Warrants in other than book-entry form; (xviii) if such Index
Warrants are not issued in book-entry form, the place or places at which payment
or delivery on cancellation, if any, and the Minimum Expiration Value, if any,
of such Index Warrants is to be made by the Company; (xix) certain U.S. federal
income tax consequences relating to such Index Warrants; and (xx) other specific
provisions.
 
    Except as otherwise provided in the applicable Prospectus Supplement, each
issue of Index Warrants will contain the terms set forth below.
 
    The Index Warrants which are issued without a Minimum Expiration Value will
be issued under one or more index warrant agreements (each, an "Index Warrant
Agreement") to be entered into between the Company and a bank or trust company,
as warrant agent (the "Index Warrant Agent"), all as described in the Prospectus
Supplement relating to such Index Warrants. The Index Warrant Agent will act
solely as the agent of the Company under the applicable Index Warrant Agreement
and will not assume any obligation or relationship of agency or trust for or
with any Index Warrantholders. A single bank or trust company may act as Index
Warrant Agent for more than one issue of Index Warrants.
 
                                       15
<PAGE>
    The Index Warrants which are issued with a Minimum Expiration Value will be
issued under one or more index warrant trust indentures (each an "Index Warrant
Trust Indenture") to be entered into between the Company and a corporation (or
other person permitted to so act by the Trust Indenture Act of 1939, as amended
from time to time (the "Trust Indenture Act")), to act as trustee (the "Index
Warrant Trustee"), all as described in the Prospectus Supplement relative to
such Index Warrants. Any Index Warrant Trust Indenture will be qualified under
the Trust Indenture Act. To the extent allowed by the Trust Indenture Act, a
single qualified corporation may act as Index Warrant Trustee for more than one
issue of Index Warrants.
 
    Forms of Index Warrant Agreement and Index Warrant Trust Indenture and the
respective global index warrant certificates related thereto are filed as
exhibits to the Registration Statement. The summaries herein of certain
provisions of the Index Warrant Agreement, the Index Warrant Trust Indenture and
global index warrant certificates do not purport to be complete and are subject
to, and are qualified in their entirety by reference to, all the provisions of
the Index Warrant Agreement, the Index Warrant Trust Indenture and global index
warrant certificates, respectively.
 
    The Company will have the right to "reopen" a previous issue of Index
Warrants and to issue additional Index Warrants of such issue without the
consent of any Index Warrantholder.
 
    The Index Warrants involve a high degree of risk, including the risk that
the Index Warrants will expire worthless except for the Minimum Expiration
Value, if any, of such Index Warrants. Investors should therefore be prepared to
sustain a total loss of the purchase price of the Index Warrants (except for the
Minimum Expiration Value, if applicable). Investors who consider purchasing
Index Warrants should be experienced with respect to options and option
transactions and reach an investment decision only after carefully considering
the suitability of the Index Warrants in light of their particular circumstances
and the information set forth below as well as additional information contained
in the Prospectus Supplement relating to such Index Warrants.
 
    Unless otherwise provided in the Prospectus Supplement, each Index Warrant
will entitle Index Warrantholders to receive from the Company upon exercise the
Settlement Value of such Index Warrant. Certain Index Warrants issued pursuant
to an Index Warrant Trust Indenture will, if specified in the Prospectus
Supplement, entitle the Index Warrantholder to receive from the Company, under
certain circumstances specified in the Prospectus Supplement, a payment or
delivery equal to the greater of the applicable Settlement Value and a Minimum
Expiration Value of such Index Warrants. In addition, certain Index Warrants
will, if specified in the Prospectus Supplement, entitle Index Warrantholders to
receive from the Company a certain payment or delivery upon cancellation of the
Index Warrants by the Company, upon the occurrence of specified events. In
addition, if so specified in the Prospectus Supplement, following the occurrence
of an extraordinary event, the Settlement Value of an Index Warrant may, at the
option of the Company, be determined on a different basis, including in
connection with automatic exercise at expiration.
 
    Unless otherwise specified in the related Prospectus Supplement, the Index
Warrants will be deemed to be automatically exercised upon expiration or such
earlier date that may be specified. Upon such automatic exercise, Index
Warrantholders will be entitled to receive a payment or delivery equal to the
Settlement Value of the Index Warrants, except that holders of Index Warrants
having a Minimum Expiration Value will be entitled to receive a payment or
delivery equal to the greater of such Settlement Value and the applicable
Minimum Expiration Value. The Minimum Expiration Value may be either a
predetermined payment or delivery or a payment or delivery that varies during
the term of the Index Warrants in accordance with a schedule or formula. Any
Minimum Expiration Value applicable to an issue of Index Warrants, as well as
any additional circumstances resulting in the automatic exercise of such Index
Warrants, will be specified in the related Prospectus Supplement.
 
    If so specified in the Prospectus Supplement, the Index Warrants may be
canceled by the Company, or the exercise or valuation of, or payment or delivery
for, such Index Warrants may be delayed or postponed
 
                                       16
<PAGE>
upon the occurrence of an extraordinary event. Any extraordinary events relating
to an issue of Index Warrants will be set forth in the related Prospectus
Supplement. Upon cancellation, the related Index Warrantholders will be entitled
to receive only the applicable payment or delivery on cancellation specified in
such Prospectus Supplement. The payment or delivery on cancellation may be
either a predetermined payment or delivery or a payment or delivery that varies
during the term of the Index Warrants in accordance with a schedule or formula.
 
    If the Company defaults with respect to any of its obligations under Index
Warrants which are issued with a Minimum Expiration Value pursuant to an Index
Warrant Trust Indenture, such default may be waived by the Index Warrantholders
of a majority in interest of all outstanding Index Warrants, except a default in
the payment or delivery of the Settlement Value, Minimum Expiration Value or
cancellation payment or delivery (if applicable) on such Index Warrants or in
respect of a covenant or provision of the applicable Index Warrant Trust
Indenture which cannot be modified or amended without the consent of the Index
Warrantholder of each outstanding Index Warrant affected.
 
    The Index Warrants are unsecured contractual obligations of the Company and
will rank PARI PASSU with the Company's other unsecured contractual obligations
and with the Company's unsecured and unsubordinated debt. Since the Company is a
holding company, the right of the Company, and hence the right of creditors of
the Company (including the Holders of the Debt Securities), to participate in
any distribution of the assets of any subsidiary upon its liquidation or
reorganization or otherwise is necessarily subject to the prior claims of
creditors of the subsidiary, except to the extent that claims of the Company
itself as a creditor of the subsidiary may be recognized. In addition,
dividends, loans and advances from certain subsidiaries, including MLPF&S, to
the Company are restricted by net capital requirements under the Exchange Act
and under rules of certain exchanges and other regulatory bodies.
 
    Certain special United States federal income tax considerations may be
applicable to instruments such as the Index Warrants. The related Prospectus
Supplement will describe such tax considerations. The summary of United States
Federal income tax considerations contained in the Prospectus Supplement will be
presented for informational purposes only, however, and will not be intended as
legal or tax advice to prospective purchasers. Prospective purchasers of Index
Warrants are urged to consult their own tax advisors prior to any acquisition of
Index Warrants.
 
BOOK-ENTRY PROCEDURES
 
    Except as may otherwise be provided in an applicable Prospectus Supplement,
Index Warrants will be issued in book-entry form and represented by global Index
Warrants, registered in the name of a depository or its nominee. Except as may
otherwise be provided in an applicable Prospectus Supplement, Index
Warrantholders will not be entitled to receive definitive certificates
representing Index Warrants, unless the depository is unwilling or unable to
continue as depository or the Company decides to have the Index Warrants
represented by definitive certificates. A beneficial owner's interest in an
Index Warrant represented by a global Index Warrant will be recorded on or
through the records of the brokerage firm or other entity that maintains such
beneficial owner's account. In turn, the total number of Index Warrants held by
an individual brokerage firm or other entity for its clients will be maintained
on the records of the depository in the name of such brokerage firm or other
entity or its agent. Transfer of ownership of any Index Warrant will be effected
only through the selling beneficial owner's brokerage firm.
 
LISTING
 
    Unless otherwise indicated in the Prospectus Supplement, the Index Warrants
will be traded pursuant to the rules of a self-regulatory organization as
specified in the Prospectus Supplement. It is expected that such self-regulatory
organization will cease trading an issue of Index Warrants at the close of
business on the related expiration date of such Index Warrants.
 
                                       17
<PAGE>
MODIFICATION
 
    Any Index Warrant Agreement or Index Warrant Trust Indenture and the terms
of the related Index Warrants may be amended by the Company and the Index
Warrant Agent or Index Warrant Trustee, as the case may be (which amendment
shall take the form of a supplemental index warrant agreement or supplemental
index warrant trust indenture (collectively referred to as "Supplemental
Agreements")), without the consent of the holders of any Index Warrants, for the
purpose of (i) curing any ambiguity, or of curing, correcting or supplementing
any defective or inconsistent provision contained therein, or of making any
other provisions with respect to matters or questions arising under the Index
Warrant Agreement or Index Warrant Trust Indenture, as the case may be, which
shall not be inconsistent with the provisions thereof or of the Index Warrants,
(ii) evidencing the succession of another corporation to the Company and the
assumption by any such successor of the covenants of the Company contained in
the Index Warrant Agreement or the Index Warrant Trust Indenture, as the case
may be, and the Index Warrants, (iii) appointing a successor depository, (iv)
evidencing and providing for the acceptance of appointment by a successor Index
Warrant Agent or Index Warrant Trustee with respect to the Index Warrants, as
the case may be, (v) adding to the covenants of the Company, for the benefit of
the Index Warrantholders or surrendering any right or power conferred upon the
Company under the Index Warrant Agreement or Index Warrant Trust Indenture, as
the case may be, (vi) issuing Index Warrants in definitive form, or (vii)
amending the Index Warrant Agreement or Index Warrant Trust Indenture, as the
case may be, in any manner which the Company may deem to be necessary or
desirable and which will not materially and adversely affect the interests of
the Index Warrantholders.
 
    The Company and the Index Warrant Agent may also amend any Index Warrant
Agreement or Index Warrant Trust Indenture, as the case may be, and the terms of
the related Index Warrants (which amendment shall take the form of a
Supplemental Agreement) with the consent of the Index Warrantholders holding not
less than 66 2/3% in number of the then outstanding unexercised Index Warrants
affected by such amendment, for the purpose of adding any provisions to or
changing in any manner or eliminating any of the provisions of the Index Warrant
Agreement or Index Warrant Trust Indenture, as the case may be, or of modifying
in any manner the rights of the Index Warrantholders; provided that no such
amendment that (i) changes the determination of the Settlement Value or the
payment or delivery to be made on cancellation, if any, or Minimum Expiration
Value, if any, of the Index Warrants (or any aspects of such determination) so
as to reduce the payment or delivery to be made upon exercise or deemed
exercise, (ii) shortens the period of time during which the Index Warrants may
be exercised, or otherwise materially and adversely affects the exercise rights
of the Index Warrantholders or (iii) reduces the number of outstanding Index
Warrants, the consent of whose holders is required for amendment of the Index
Warrant Agreement, the Index Warrant Trust Indenture or the terms of the related
Index Warrants, may be made without the consent of each Index Warrantholder
affected thereby.
 
EVENTS OF DEFAULT
 
    Certain events in bankruptcy, insolvency or reorganization of the Company
will constitute an Event of Default with respect to Index Warrants having a
Minimum Expiration Value which are issued under an Index Warrant Trust
Indenture. Upon the occurrence of an Event of Default, the holders of 25% of
unexercised Index Warrants may elect to receive a settlement payment or delivery
for such unexercised Index Warrants, which will immediately become due to the
Index Warrantholders upon such election in an amount equal to the market value
of such Index Warrants (assuming the Company's ability to satisfy its
obligations under such Index Warrants as they would become due) as of the date
the Company is notified of the intended liquidation, as determined by a
nationally recognized securities broker-dealer unaffiliated with the Company and
mutually selected by the Company and the Index Warrant Trustee.
 
                                       18
<PAGE>
MERGER, CONSOLIDATION, SALE, LEASE OR OTHER DISPOSITIONS
 
    The Company may consolidate or merge with or into any other corporation and
the Company may sell, lease or convey all or substantially all of its assets to
any corporation, provided that (i) the corporation (if other than the Company)
formed by or resulting from any such consolidation or merger or which shall have
received such assets shall be a corporation organized and existing under the
laws of the United States of America or a State thereof and shall assume the
Company's obligations in respect of the payment or delivery of the Settlement
Value (or any Minimum Expiration Value or cancellation payment or delivery, if
applicable) with respect to all the unexercised Index Warrants and the
performance and observance of all of the covenants and conditions of the Index
Warrant Agreement or Index Warrant Trust Indenture, as the case may be, to be
performed or observed by the Company, and (ii) the Company or such successor
corporation, as the case may be, shall not immediately be in default under the
Index Warrant Agreement or Index Warrant Trust Indenture, as the case may be.
 
ENFORCEABILITY OF RIGHTS BY INDEX WARRANTHOLDERS
 
    Any Index Warrantholder may, without the consent of the related Index
Warrant Agent, enforce by appropriate legal action, in and for its own behalf,
its right to exercise, and receive payment or delivery for, its Index Warrants.
 
                              PLAN OF DISTRIBUTION
 
    The Company may sell Securities (i) through MLPF&S as agent, (ii) to the
public through, or through underwriting syndicates managed or co-managed by, one
or more underwriters, including MLPF&S, or (iii) directly to purchasers. The
Prospectus Supplement with respect to the Securities of a particular series
describes the terms of the offering of such Securities, including the name of
the agent or the name or names of any underwriters, the public offering or
purchase price, any discounts and commissions to be allowed or paid to the agent
or underwriters, all other items constituting underwriting compensation, the
discounts and commissions to be allowed or paid to dealers, if any, and the
exchanges, if any, on which the Securities will be listed. Only the agents or
underwriters so named in the Prospectus Supplement are agents or underwriters in
connection with the Securities offered thereby. Under certain circumstances, the
Company may repurchase Securities and reoffer them to the public as set forth
above. The Company may also arrange for repurchases and resales of such
Securities by dealers.
 
    If so indicated in the Prospectus Supplement, the Company will authorize
underwriters to solicit offers by certain institutions to purchase Debt
Securities from the Company pursuant to delayed delivery contracts providing for
payment and delivery on the date stated in the Prospectus Supplement. Each such
contract will be for an amount not less than, and, unless the Company otherwise
agrees, the aggregate principal amount of Debt Securities sold pursuant to such
contracts shall not be more than, the respective amounts stated in the
Prospectus Supplement. Institutions with whom such contracts, when authorized,
may be made include commercial and savings banks, insurance companies, pension
funds, investment companies, educational and charitable institutions, and other
institutions, but shall in all cases be subject to the approval of the Company.
Delayed delivery contracts will not be subject to any conditions except that the
purchase by an institution of the Debt Securities covered thereby shall not at
the time of delivery be prohibited under the laws of any jurisdiction in the
United States to which such institution is subject.
 
    The Company has agreed to indemnify the agent and the several underwriters
against certain civil liabilities, including liabilities under the Securities
Act of 1933, as amended (the "Act"), or contribute to payments the agent or the
underwriters may be required to make in respect thereof.
 
    The distribution of Securities will conform to the requirements set forth in
the applicable sections of Rule 2720 of the Conduct Rules of the National
Association of Securities Dealers, Inc.
 
                                       19
<PAGE>
                                    EXPERTS
 
    The consolidated financial statements and related financial statement
schedules of the Company and its subsidiaries included or incorporated by
reference in the Company's 1995 Annual Report on Form 10-K, and incorporated by
reference in this Prospectus, have been audited by Deloitte & Touche LLP,
independent auditors, as stated in their reports incorporated by reference
herein. The information under the caption "Summary Financial Information" for
each of the four years in the period ended December 29, 1995 included in this
Prospectus and the Selected Financial Data under the captions "Operating
Results", "Financial Position" and "Common Share Data" for each of the five
years in the period ended December 29, 1995 included in the 1995 Annual Report
to Stockholders of the Company and incorporated by reference herein, has been
derived from consolidated financial statements audited by Deloitte & Touche LLP,
as set forth in their reports incorporated by reference herein. Such
consolidated financial statements and related financial statement schedules,
such Summary Financial Information and Selected Financial Data appearing or
incorporated by reference in this Prospectus and the Registration Statement of
which this Prospectus is a part, have been included or incorporated herein by
reference in reliance upon such reports of Deloitte & Touche LLP given upon
their authority as experts in accounting and auditing.
 
    With respect to unaudited interim financial information for the periods
included in the Quarterly Reports on Form 10-Q which are incorporated herein by
reference, Deloitte & Touche LLP have applied limited procedures in accordance
with professional standards for a review of such information. However, as stated
in their report included in such Quarterly Report on Form 10-Q and incorporated
by reference herein, they did not audit and they do not express an opinion on
such interim financial information. Accordingly, the degree of reliance on their
reports on such information should be restricted in light of the limited nature
of the review procedures applied. Deloitte & Touche LLP are not subject to the
liability provisions of Section 11 of the Act for any such report on unaudited
interim financial information because any such report is not a "report" or a
"part" of the registration statement prepared or certified by an accountant
within the meaning of Sections 7 and 11 of the Act.
 
                                       20
<PAGE>
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    NO DEALER, SALESPERSON OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS SUPPLEMENT OR THE PROSPECTUS IN CONNECTION WITH THE OFFER MADE BY
THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS, AND, IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
BY THE COMPANY OR BY THE UNDERWRITER. NEITHER THE DELIVERY OF THIS PROSPECTUS
SUPPLEMENT AND THE PROSPECTUS NOR ANY SALE MADE HEREUNDER AND THEREUNDER SHALL
UNDER ANY CIRCUMSTANCE CREATE AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN
THE AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF. THIS PROSPECTUS SUPPLEMENT AND
THE PROSPECTUS DO NOT CONSTITUTE AN OFFER OR SOLICITATION BY ANYONE IN ANY
JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH
THE PERSON MAKING SUCH OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO OR TO
ANYONE TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.
                            ------------------------
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
              PROSPECTUS SUPPLEMENT
<S>                                     <C>
                                          PAGE
                                        ---------
 
Summary...............................        S-3
Risk Factors..........................        S-6
Description of Securities.............        S-9
The Index.............................       S-14
Certain United States Federal Income
  Tax Considerations..................       S-20
Use of Proceeds.......................       S-24
Underwriting..........................       S-24
Validity of Securities................       S-25
 
<CAPTION>
 
                   PROSPECTUS
<S>                                     <C>
 
Available Information.................          2
Incorporation of Certain Documents by
  Reference...........................          2
Merrill Lynch & Co., Inc..............          3
Use of Proceeds.......................          3
Summary Financial Information.........          4
Description of Debt Securities........          8
Description of Debt Warrants..........         12
Description of Currency Warrants......         13
Description of Index Warrants.........         14
Plan of Distribution..................         19
Experts...............................         20
</TABLE>
 
                                     [LOGO]
 
                                17,500,000 UNITS
 
                           MERRILL LYNCH & CO., INC.
 
                                 S&P 500 MARKET
                         INDEX TARGET-TERM SECURITIESSM
                             DUE SEPTEMBER 16, 2002
                         "MITTS-REGISTERED TRADEMARK-"
 
                               ------------------
                             PROSPECTUS SUPPLEMENT
                            ------------------------
 
                              MERRILL LYNCH & CO.
 
                                 MARCH 10, 1997
 
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