AMERICAN RE CORP
S-4/A, 1997-02-12
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>
   
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 12, 1997
    
 
   
                                                      REGISTRATION NO. 333-20663
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                               AMENDMENT NO. 1 TO
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
    
                            ------------------------
 
                            AMERICAN RE CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<CAPTION>
             DELAWARE                              6719                             13-3672116
<S>                                 <C>                                 <C>
   (State or Other Jurisdiction        (Primary Standard Industrial              (I.R.S. Employer
of Incorporation or Organization)      Classification Code Number)            Identification Number)
</TABLE>
 
                            ------------------------
 
                             555 COLLEGE ROAD EAST
                              PRINCETON, NJ 08543
                                 (609) 243-4200
              (Address, Including Zip Code, and Telephone Number,
       Including Area Code, of Registrant's Principal Executive Offices)
 
                         ------------------------------
 
                            ROBERT K. BURGESS, ESQ.
                            AMERICAN RE CORPORATION
                             555 COLLEGE ROAD EAST
                              PRINCETON, NJ 08543
                                 (609) 243-4200
           (Name, Address, Including Zip Code, and Telephone Number,
                   Including Area Code, of Agent for Service)
 
                         ------------------------------
 
                                WITH A COPY TO:
                             GARY I. HOROWITZ, ESQ.
                           SIMPSON THACHER & BARTLETT
                              425 LEXINGTON AVENUE
                            NEW YORK, NEW YORK 10017
                                 (212) 455-2000
                            ------------------------
 
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: AS SOON AS
PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.
 
    If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box: / /
                            ------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                            PROPOSED            PROPOSED
                                                                            MAXIMUM             MAXIMUM            AMOUNT OF
             TITLE OF EACH CLASS OF                    AMOUNT TO         OFFERING PRICE        AGGREGATE          REGISTRATION
           SECURITIES TO BE REGISTERED               BE REGISTERED          PER NOTE         OFFERING PRICE           FEE
<S>                                                <C>                 <C>                 <C>                 <C>
7.45% Senior Notes due 2026, Series B............     $500,000,000            100%            500,000,000         $151,515.15
</TABLE>
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(A), MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
   
PROSPECTUS
    
 
                            AMERICAN RE CORPORATION
 
    [LOGO]
                  OFFER TO EXCHANGE UP TO $500,000,000 OF ITS
                     7.45% SENIOR NOTES DUE 2026, SERIES B
                       FOR ANY AND ALL OF ITS OUTSTANDING
                     7.45% SENIOR NOTES DUE 2026, SERIES A
 
                              --------------------
 
   
     THE EXCHANGE OFFER WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME,
                      ON MARCH 14, 1997, UNLESS EXTENDED.
    
 
                            ------------------------
 
    American Re Corporation (the "Company"), hereby offers, upon the terms and
subject to the conditions set forth in this Prospectus and the accompanying
Letter of Transmittal (which together constitute the "Exchange Offer"), to
exchange an aggregate of up to $500,000,000 principal amount of 7.45% Senior
Notes due 2026, Series B (the "Exchange Notes"), of the Company for an identical
face amount of the issued and outstanding 7.45% Senior Notes due 2026, Series A
(the "Old Notes" and the Old Notes and the Exchange Notes, collectively, the
"Notes"), of the Company from the holders thereof. As of the date of this
Prospectus, there is $500,000,000 aggregate principal amount of the Old Notes
outstanding. The terms of the Exchange Notes are identical in all material
respects to the Old Notes, except that the Exchange Notes have been registered
under the Securities Act of 1933, as amended (the "Securities Act"), and
therefore will not bear legends restricting their transfer and will not contain
certain provisions providing for an increase in the interest rate on the Old
Notes under certain circumstances relating to the Registration Rights Agreement
(as defined herein), which provisions will terminate as to all of the Notes upon
the consummation of the Exchange Offer.
 
    Interest on the Old Notes has accrued from the original date of issuance
thereof, December 24, 1996 and will cease to accrue on the date the Exchange
Notes are exchanged for the Old Notes. Interest on the Exchange Notes will
accrue from the date the Exchange Notes are exchanged for the Old Notes and is
payable in cash semi-annually in arrears on June 15 and December 15 of each
year, commencing June 15, 1997.
 
                            ------------------------
 
    SEE "RISK FACTORS," BEGINNING ON PAGE 9, FOR A DISCUSSION OF CERTAIN FACTORS
THAT SHOULD BE CONSIDERED BY INVESTORS IN CONNECTION WITH THE EXCHANGE OFFER AND
AN INVESTMENT IN THE EXCHANGE NOTES.
 
                             ---------------------
 
THE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
      EXCHANGE COMMISSION NOR HAS ANY STATE COMMISSION PASSED UPON
            THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
                         REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.
 
   
               The date of this Prospectus is February 12, 1997.
    
<PAGE>
    FOR NORTH CAROLINA PURCHASERS: THESE SECURITIES HAVE NOT BEEN APPROVED OR
DISAPPROVED BY THE COMMISSIONER OF INSURANCE FOR THE STATE OF NORTH CAROLINA,
NOR HAS THE NORTH CAROLINA COMMISSIONER RULED UPON THE ACCURACY OF THIS OFFERING
CIRCULAR.
 
                            ------------------------
 
    The Old Notes were issued and sold on December 24, 1996 in a transaction not
registered under the Securities Act in reliance upon an exemption from the
registration requirements thereof. In general, the Old Notes may not be offered
or sold unless registered under the Securities Act, except pursuant to an
exemption from, or in a transaction not subject to, the Securities Act. The
Exchange Notes are being offered hereby in order to satisfy certain obligations
of the Company contained in the Registration Rights Agreement. Based on
interpretations by the staff of the Securities and Exchange Commission (the
"Commission") set forth in no-action letters issued to third parties, the
Company believes that the Exchange Notes issued pursuant to the Exchange Offer
in exchange for Old Notes may be offered for resale, resold or otherwise
transferred by any holder thereof (other than any such holder that is an
"affiliate" of the Company within the meaning of Rule 405 promulgated under the
Securities Act) without compliance with the registration and prospectus delivery
provisions of the Securities Act, provided that such Exchange Notes are acquired
in the ordinary course of such holder's business, such holder has no arrangement
with any person to participate in the distribution of such Exchange Notes and
neither such holder nor any such other person is engaging in or intends to
engage in a distribution of such Exchange Notes. However, the Company has not
sought, and does not intend to seek, its own no-action letter, and there can be
no assurance that the staff of the Commission would make a similar determination
with respect to the Exchange Offer. Notwithstanding the foregoing, each
broker-dealer that receives Exchange Notes for its own account pursuant to the
Exchange Offer must acknowledge that it will deliver a prospectus in connection
with any resale of such Exchange Notes. The Letter of Transmittal states that by
so acknowledging and by delivering a prospectus, a broker-dealer will not be
deemed to admit that it is an "underwriter" within the meaning of the Securities
Act. This Prospectus, as it may be amended or supplemented from time to time,
may be used by a broker-dealer in connection with any resale of Exchange Notes
received in exchange for such Old Notes where such Old Notes were acquired by
such broker-dealer as a result of market-making activities or other trading
activities (other than Old Notes acquired directly from the Company). The
Company has agreed that for a period of no greater than 180 days after the
consummation of the Exchange Offer, it will make this Prospectus available to
any broker-dealer for use in connection with any such resale.
 
    The Old Notes are designated for trading in the Private Offerings, Resales
and Trading through Automated Linkages ('PORTAL') market. There is no
established trading market for the Exchange Notes. The Company does not
currently intend to list the Exchange Notes on any securities exchange or to
seek approval for quotation through any automated quotation system. Accordingly,
there can be no assurance as to the development or liquidity of any market for
the Exchange Notes. The certificates representing the Exchange Notes will be
represented by a single, permanent global Exchange Note, in definitive, fully
registered form without interest coupons (the 'Global Note') and will be
deposited with the Trustee as custodian for The Depository Trust Company ('DTC')
and registered in the name of a nominee of DTC. Ownership of beneficial
interests in the Global Note will be shown on, and the transfer of that
ownership will be effected only through, records maintained by DTC or its
nominee or participants therein.
 
   
    The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Old Notes being tendered for exchange. The date for acceptance and
exchange of the Old Notes (the "Exchange Date") will be the first business day
following the Expiration Date (as defined herein). Old Notes tendered pursuant
to the Exchange Offer may be withdrawn at any time prior to the Expiration Date.
The Company will not receive any proceeds from the Exchange Offer. The Exchange
Offer will expire 12:00 midnight, New York City time, on March 14, 1997, unless
the Exchange Offer is extended, in which case the term "Expiration Date" means
the latest date and time to which the Exchange Offer is extended.
    
 
                                       2
<PAGE>
                             AVAILABLE INFORMATION
 
    The Company has filed with the Commission a Registration Statement on Form
S-4 (together with all amendments, exhibits, schedules and supplements thereto,
the "Registration Statement") under the Securities Act with respect to the
Exchange Notes being offered hereby. This Prospectus, which forms a part of the
Registration Statement, does not contain all of the information set forth in the
Registration Statement. For further information with respect to the Company and
the Exchange Notes, reference is made to the Registration Statement. Statements
contained in this Prospectus as to the contents of any contract or other
document are not necessarily complete, and, where such contract or other
document is an exhibit to the Registration Statement, each such statement is
qualified in all respects by the provisions in such exhibit. Copies of the
Registration Statement may be examined without charge at the public reference
facilities maintained by the Commission, 450 Fifth Street, N.W., Washington,
D.C. 20549, and at the web site (http://www.sec.gov.) maintained by the
Commission and at the Commission's Regional Offices located at Seven World Trade
Center, Suite 1300, New York, New York, 10048 and Citicorp Center, 500 West
Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of all or any
portion of the Registration Statement can be obtained from the Public Reference
Section of the Commission, 450 Fifth Street, N.W., Washington, D.C. 20549, upon
payment of certain fees prescribed by the Commission.
 
    The Company is subject to the information requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, and other information with the Commission. Reports, and
other information filed by the Company may be inspected and copied at the public
reference facilities maintained by the Commission in Room 1024, 450 Fifth
Street, N.W., Washington, D.C. 20549, and at the Commission's Regional Offices
located at Seven World Trade Center, Suite 1300, New York, New York 10048 and
Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661.
Copies of such materials may be obtained upon written request from the Public
Reference Section of the Commission at 450 Fifth Street, N.W., Washington, D.C.
20549, at prescribed rates.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The following documents filed with the Commission by the Company pursuant to
the Exchange Act are incorporated herein by reference in their entirety and are
attached hereto as Annexes I through VII, respectively, without the schedules,
exhibits and annexes appended thereto (except as described below):
 
     1. The Company's Annual Report on Form 10-K for the year ended December 31,
        1995 (the "1995 10-K").
 
     2. The Company's Quarterly Report on Form 10-Q for the quarter ended March
        31, 1996 (the "March 10-Q").
 
     3. The Company's Quarterly Report on Form 10-Q for the quarter ended June
        30, 1996 (the "June 10-Q").
 
     4. The Company's Current Report on Form 8-K dated August 13, 1996 (the
        "August 8-K").
 
     5. The Company's Quarterly Report on Form 10-Q for the quarter ended
        September 30, 1996 (the "September 10-Q").
 
     6. The Company's Current Report on Form 8-K dated November 25, 1996 (the
        "November 8-K").
 
     7. The Company's Current Report on Form 8-K dated December 11, 1996 (the
        "December 8-K"), including the exhibit thereto.
 
                                       3
<PAGE>
    All other documents filed by the Company pursuant to Section 13(a), 13(c),
14, or 15(d) of the Exchange Act subsequent to the date of this Prospectus and
prior to the termination of this offering shall be deemed to be incorporated by
reference in this Prospectus and to be a part hereof from the respective dates
of the filing of such documents.
 
    Any statement contained herein or in a document all or a portion of which is
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or superseded for purposes of this Prospectus to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of this
Prospectus.
 
                                       4
<PAGE>
                               THE EXCHANGE OFFER
 
   
<TABLE>
<S>                                            <C>
THE EXCHANGE OFFER...........................  The Company is offering to exchange pursuant
                                               to the Exchange Offer up to $500,000,000
                                               aggregate principal amount of its new 7.45%
                                               Senior Notes due 2026, Series B (the
                                               "Exchange Notes") for a like aggregate
                                               principal amount of its outstanding 7.45%
                                               Senior Notes due 2026, Series A (the "Old
                                               Notes"). The terms of the Exchange Notes are
                                               identical in all material respects (including
                                               principal amount, interest rate and maturity)
                                               to the terms of the Old Notes for which they
                                               may be exchanged pursuant to the Exchange
                                               Offer, except that the Exchange Notes are
                                               freely transferrable by holders of such Notes
                                               (each a "holder" or "Holder") other than as
                                               provided herein, and are not subject to any
                                               covenant regarding registration under the
                                               Securities Act. See "The Exchange Offer."
INTEREST PAYMENTS............................  Interest on the Old Notes has accrued from
                                               the original date of issuance thereof,
                                               December 24, 1996, and will cease to accrue
                                               on the date the Exchange Notes are exchanged
                                               for the Old Notes. Interest on the Exchange
                                               Notes will accrue from the date the Exchange
                                               Notes are exchanged for Old Notes and is
                                               payable in cash semi-annually in arrears on
                                               June 15 and December 15 of each year,
                                               commencing June 15, 1997.
MINIMUM CONDITION............................  The Exchange Offer is not conditioned upon
                                               any minimum aggregate principal amount of Old
                                               Notes being tendered for exchange.
EXPIRATION DATE; WITHDRAWAL OF TENDER........  The Exchange Offer will expire 12:00
                                               midnight, New York City time, on March 14,
                                               1997, unless the Exchange Offer is extended,
                                               in which case the term "Expiration Date"
                                               means the latest date and time to which the
                                               Exchange Offer is extended. Tenders may be
                                               withdrawn at any time prior to 12:00
                                               midnight, New York City time, on the
                                               Expiration Date. See "The Exchange Offer--
                                               Withdrawal of Rights."
EXCHANGE DATE................................  The date of acceptance for exchange of the
                                               Old Notes will be the first business day
                                               following the Expiration Date.
CONDITIONS TO THE EXCHANGE OFFER.............  The Exchange Offer is subject to certain
                                               customary conditions, which may be waived by
                                               the Company. The Company currently expects
                                               that each of the conditions will be satisfied
                                               and that no waivers will be necessary. See
                                               "The Exchange Offer--Certain Conditions to
                                               the Exchange Offer." The Company reserves the
                                               right to terminate or amend the Exchange
                                               Offer at any time prior to the Expiration
                                               Date upon the occurrence of any such
                                               condition.
</TABLE>
    
 
                                       5
<PAGE>
 
   
<TABLE>
<S>                                            <C>
PROCEDURES FOR TENDERING OLD NOTES...........  Each holder of Old Notes wishing to accept
                                               the Exchange Offer must complete, sign and
                                               date the Letter of Transmittal, or a
                                               facsimile thereof, in accordance with the
                                               instructions contained herein and therein,
                                               and mail or otherwise deliver such Letter of
                                               Transmittal, or such facsimile, together with
                                               the Old Notes and any other required
                                               documentation to the Exchange Agent (as
                                               defined herein) at the address set forth
                                               herein. See "The Exchange Offer--Procedures
                                               for Tendering Old Notes" and "Plan of
                                               Distribution."
USE OF PROCEEDS..............................  There will be no proceeds to the Company from
                                               the exchange of Notes pursuant to the
                                               Exchange Offer.
FEDERAL INCOME TAX CONSEQUENCES..............  The exchange of Notes pursuant to the
                                               Exchange Offer will not be a taxable event
                                               for federal income tax purposes. See "United
                                               States Federal Income Tax Consequences."
SPECIAL PROCEDURES FOR
  BENEFICIAL OWNERS..........................  Any beneficial owner whose Old Notes are
                                               registered in the name of a broker, dealer,
                                               commercial bank, trust company or other
                                               nominee and who wishes to tender should
                                               contact such registered holder promptly and
                                               instruct such registered holder to tender on
                                               such beneficial owner's behalf. If such
                                               beneficial owner wishes to tender on such
                                               beneficial owner's own behalf, such
                                               beneficial owner must, prior to completing
                                               and executing the Letter of Transmittal and
                                               delivering the Old Notes, either make
                                               appropriate arrangements to register
                                               ownership of the Old Notes in such beneficial
                                               owner's name or obtain a properly completed
                                               bond power from the registered holder. The
                                               transfer of registered ownership may take
                                               considerable time. See "The Exchange
                                               Offer--Procedures for Tendering Old Notes."
GUARANTEED DELIVERY PROCEDURES...............  Holders of Old Notes who wish to tender their
                                               Old Notes and whose Old Notes are not
                                               entirely available or who cannot deliver
                                               their Old Notes, the Letter of Transmittal or
                                               any other documents required by the Letter of
                                               Transmittal to the Exchange Agent prior to
                                               the Expiration Date must tender their Old
                                               Notes according to the guaranteed delivery
                                               procedures set forth in "The Exchange
                                               Offer--Procedures for Tendering Old Notes."
ACCEPTANCE OF OLD NOTES AND DELIVERY OF
  EXCHANGE...................................  The Company will accept for exchange any and
                                               all Old Notes which are properly tendered in
                                               the Exchange Offer prior to 12:00 midnight,
                                               New York City time, on the Expiration Date.
                                               The Exchange Notes issued pursuant to the
                                               Exchange Offer will be delivered promptly
                                               following the Expiration
</TABLE>
    
 
                                       6
<PAGE>
 
<TABLE>
<S>                                            <C>
                                               Date. See "The Exchange Offer--Procedures for
                                               Tendering Old Notes."
EFFECT ON HOLDERS OF OLD NOTES...............  As a result of the making of, and upon
                                               acceptance for exchange of all validly
                                               tendered Old Notes pursuant to the terms of,
                                               this Exchange Offer, the Company will have
                                               fulfilled a covenant contained in the
                                               Registration Rights Agreement (the
                                               "Registration Rights Agreement") dated as of
                                               December 24, 1996 among the Company, Goldman,
                                               Sachs & Co., Donaldson, Lufkin & Jenrette
                                               Securities Corporation, J.P. Morgan
                                               Securities Inc., Merrill Lynch, Pierce,
                                               Fenner & Smith Incorporated, Salomon Brothers
                                               Inc, Smith Barney Inc. and UBS Securities LLC
                                               (the "Initial Purchasers") and, accordingly
                                               there will be no increase in the interest
                                               rate on the Old Notes pursuant to the terms
                                               of the Registration Rights Agreement, and the
                                               holders of the Old Notes will have no further
                                               registration or other rights under the
                                               Registration Rights Agreement. Holders of the
                                               Old Notes who do not tender their Old Notes
                                               in the Exchange Offer will continue to hold
                                               such Old Notes and will be entitled to all
                                               the rights and limitations applicable thereto
                                               under the Indenture between the Company and
                                               State Street Bank and Trust Company relating
                                               to the Old Notes and the Exchange Notes (the
                                               "Indenture") except for any such rights under
                                               the Registration Rights Agreement that by
                                               their terms terminate or cease to have
                                               further effectiveness as a result of the
                                               making of, and the acceptance for exchange of
                                               all validly tendered Old Notes pursuant to,
                                               the Exchange Offer. All untendered Old Notes
                                               will continue to be subject to the
                                               restrictions on transfer provided for in the
                                               Old Notes and in the Indenture. To the extent
                                               that Old Notes are tendered and accepted in
                                               the Exchange Offer the trading market for
                                               untendered Old Notes could be adversely
                                               affected.
CONSEQUENCE OF FAILURE TO EXCHANGE...........  Holders of Old Notes who do not exchange
                                               their Notes for Exchange Notes pursuant to
                                               the Exchange Offer will continue to be
                                               subject to the restrictions on transfer of
                                               such Old Notes as set forth in the legend
                                               thereon as a consequence of the offer or sale
                                               of the Old Notes pursuant to an exemption
                                               from, or in a transaction not subject to, the
                                               registration requirements of the Securities
                                               Act and applicable state securities laws. In
                                               general, the Old Notes may not be offered or
                                               sold, unless registered under the Securities
                                               Act, except pursuant to an exemption from, or
                                               in a transaction not subject to, the
                                               Securities Act and applicable state
                                               securities laws. The Company does not
</TABLE>
 
                                       7
<PAGE>
 
<TABLE>
<S>                                            <C>
                                               currently anticipate that it will register
                                               the Old Notes under the Securities Act.
EXCHANGE AGENT...............................  State Street Bank and Trust Company is
                                               serving as exchange agent (the "Exchange
                                               Agent") in connection with the Exchange
                                               Offer. See "The Exchange Offer--Exchange
                                               Agent."
 
                                TERMS OF THE EXCHANGE NOTES
 
SECURITIES OFFERED...........................  $500,000,000 principal amount of 7.45% Senior
                                               Notes due 2026, Series B.
MATURITY DATE................................  December 15, 2026.
INTEREST PAYMENT DATES.......................  June 15 and December 15 of each year,
                                               commencing June 15, 1997.
OPTIONAL REDEMPTION..........................  The Exchange Notes will be redeemable, in
                                               whole or in part, at the option of the
                                               Company at any time, at a redemption price
                                               equal to the greater of (i) 100% of the
                                               principal amount and (ii) the sum of the
                                               present values of the remaining scheduled
                                               payments of principal and interest thereon
                                               discounted, on a semiannual basis, at the
                                               Treasury Yield (as defined) plus 15 basis
                                               points, together with accrued interest plus
                                               premium, and Liquidated Damages (as defined),
                                               if any, to the date of redemption.
RANKING......................................  The Exchange Notes will be general, unsecured
                                               obligations of the Company and will rank PARI
                                               PASSU with all other senior indebtedness of
                                               the Company.
CERTAIN COVENANTS............................  The Indenture governing the Notes and the
                                               Exchange Notes (the "Indenture")contains
                                               certain covenants, that will, among other
                                               things, limit the ability of the Company and
                                               its Principal Subsidiaries (as defined) to
                                               incur liens securing indebtedness ranking
                                               PARI PASSU with the Notes without equally and
                                               ratably securing the Notes, and to engage in
                                               mergers and consolidations. See "Description
                                               of the Notes."
ABSENCE OF MARKET............................  The Exchange Notes are new securities for
                                               which there is currently no established
                                               market. Accordingly, there can be no
                                               assurance as to the development or liquidity
                                               of any market for the Exchange Notes. The
                                               Company does not intend to apply for a
                                               listing of the Exchange Notes on a securities
                                               exchange.
</TABLE>
 
                                  RISK FACTORS
 
    See "Risk Factors" for a discussion of certain factors that should be
considered by Holders of the Old Notes prior to tendering Old Notes in the
Exchange Offer.
 
                                       8
<PAGE>
                                  RISK FACTORS
 
    HOLDERS OF OLD NOTES SHOULD CONSIDER CAREFULLY, IN ADDITION TO THE OTHER
INFORMATION CONTAINED IN THIS PROSPECTUS, THE FOLLOWING FACTORS BEFORE DECIDING
TO TENDER OLD NOTES IN THE EXCHANGE OFFER. THE RISK FACTORS SET FORTH BELOW ARE
GENERALLY APPLICABLE TO THE OLD NOTES AS WELL AS THE EXCHANGE NOTES.
 
CONSEQUENCES OF FAILURE TO EXCHANGE
 
    Holders of Old Notes who do not exchange their Old Notes for new Notes
pursuant to the Exchange Offer will continue to be subject to the restrictions
on transfer of such Old Notes as set forth in the legend thereon as a
consequence of the offer or sale of the Old Notes pursuant to an exemption from,
or in a transaction not subject to, the registration requirements of the
Securities Act and applicable state securities laws. In general, Old Notes may
not be offered or sold unless registered under the Securities Act, except
pursuant to an exemption from, or in a transaction not subject to, the
Securities Act and applicable state securities laws. The Company does not
currently intend to register the Old Notes under the Securities Act. Based on
interpretations by the staff of the Commission, the Company believes that
Exchange Notes issued pursuant to the Exchange Offer in exchange for Old Notes
may be offered for resale, resold or otherwise transferred by holders thereof
(other than any such holder which is an "affiliate" of the Company within the
meaning of Rule 405 under the Securities Act) without compliance with the
registration and prospectus delivery provisions of the Securities Act, provided
that such Old Notes were acquired in the ordinary course of such Holders'
business and such holders have no arrangement with any person to participate in
the distribution of such Exchange Notes. Each broker-dealer that receives
Exchange Notes for its own account in exchange for Old Notes, where such Old
Notes were acquired by such broker-dealer as a result of market making
activities or other trading activities, must acknowledge that it will deliver a
prospectus in connection with any resale of such Exchange Notes. See "Plan of
Distribution." To the extent that Old Notes are tendered and accepted in the
Exchange Offer, the trading market for untendered and tendered but unaccepted
Old Notes will be adversely affected.
 
HOLDING COMPANY STRUCTURE
 
    The operations of the Company are conducted through its
insurance/reinsurance subsidiaries. Except to the extent that the Company may
itself be a creditor with recognized claims against its insurance/reinsurance
subsidiaries, claims of creditors of such subsidiaries, including ceding
companies (i.e., primary insurers) under reinsurance agreements, will have
priority with respect to the assets and earnings of such subsidiaries of the
Company, even though such subsidiary obligations do not constitute senior
indebtedness of the Company. Liabilities of the Company's insurance/reinsurance
subsidiaries, including loss reserves and unearned premium reserves, aggregated
$7,249.3 million at September 30, 1996 and assets of such subsidiaries totaled
$8,395.6 million as of such date.
 
    In addition, in the event of a default on the Company's debt or an
insolvency, liquidation or other reorganization of the Company, creditors of the
Company will have no right to proceed against the assets of its
insurance/reinsurance subsidiaries or to cause their liquidation under Federal
and state bankruptcy laws. If the Company's principal insurance/reinsurance
subsidiary, American Re-Insurance Company ("American Re-Insurance"), were to be
liquidated, such liquidation would be conducted under the Delaware Insurance
Code (the "Delaware Code") by the Delaware Insurance Commissioner as the
receiver with respect to such subsidiary's property and business.
 
    The Company is dependent on dividends and tax allocation payments from
American Re-Insurance, and its other insurance/reinsurance subsidiaries to meet
its debt obligations, including its obligations under the Notes. The payment of
dividends to the Company by American Re-Insurance is subject to limitations
imposed by the Delaware Code and other applicable state law. The aggregate
amount available for payment of dividends by American Re-Insurance to the
Company during 1996 without prior
 
                                       9
<PAGE>
approval of regulatory authorities is $110.0 million (of which $70.0 million has
already been paid). Anticipated interest expense of the Company for 1996,
including charges related to the interest payable to the holders of the Notes,
on a pro forma basis after giving effect to this Offering and the application of
the net proceeds therefrom, will be approximately $40.2 million (compared to
actual interest expense of $40.5 million for the nine months ended September 30,
1996).
 
FACTORS SPECIFIC TO THE REINSURANCE INDUSTRY AND THE COMPANY
 
    The property and casualty reinsurance industry has been highly cyclical.
Demand for reinsurance is significantly influenced by underwriting results of
primary property and casualty insurance companies and prevailing general
economic and market conditions, all of which affect retention levels of primary
insurance companies and reinsurance premium rates. The cyclical trends in the
industry and the industry's profitability can also be affected significantly by
volatile and unpredictable developments, including changes in what the Company
believes to be the propensity of courts to grant large awards, natural disasters
and other catastrophic events (such as hurricanes, windstorms, earthquakes,
floods and fires), fluctuations in interest rates and other changes in the
investment environment which affect market prices of the Company's investments
and the income and returns on those investments, and inflationary pressures that
may tend to affect the size of losses experienced by ceding primary insurance
companies.
 
    The Company and its insurance/reinsurance subsidiaries are subject to
regulation by state insurance authorities under the insurance statutes,
including insurance holding company statutes, of various states, including
Delaware, the domiciliary state of American Re-Insurance. Such statutes, among
other things, limit the amount of dividends that can be paid by the
insurance/reinsurance subsidiaries without prior regulatory approval, impose
restrictions on the amount and type of investments the insurance/ reinsurance
subsidiaries may have, prescribe solvency standards that must be met and
maintained, require the insurance/reinsurance subsidiaries to maintain reserves
for losses, loss adjustment expenses ("LAE") and unearned premiums and, in some
states, limit the right of offset. Such insurance holding company statutes
generally require prior notice or regulatory approval of changes of control of
an insurer or its holding company.
 
    From time to time, various regulatory and legislative changes have been
proposed in the insurance and reinsurance industry, which, if implemented, may
have an effect on reinsurers, including the Company. These proposals include
limitations on the right of offset by reinsurers and possible introduction of
federal regulation of reinsurers. The Company is unable to predict whether any
such proposal will be adopted, the form in which any such proposal would be
adopted, or the effect, if any, the adoption of any such proposal would have on
the Company or its insurance/reinsurance subsidiaries.
 
    The Company and its insurance/reinsurance subsidiaries are required to
maintain reserves to cover their estimated ultimate liability for losses and LAE
with respect to reported and unreported claims incurred as of the end of each
accounting period (net of estimated related salvage and subrogation claims and
reinsurance recoverables). These loss and LAE reserves are estimates involving
claims adjustors' evaluations of reported claims and actuarial and statistical
projections at a given time of what the insurance/reinsurance subsidiaries
expect the ultimate settlement and administration of claims to cost based on
facts and circumstances then known, predictions of future events, estimates of
future trends in claims severity and other variable factors such as inflation
and new concepts of liability. The inherent uncertainties of estimating loss
reserves are exacerbated for reinsurers by the significant periods of time that
often elapse between the occurrence of an insured loss, the reporting of the
loss to the primary insurer and, ultimately, to the reinsurer, and the primary
insurer's payment of that loss and subsequent indemnification by the reinsurer.
As a consequence, actual losses and LAE paid may deviate, perhaps substantially,
from estimates reflected in the reserves of the Company and its
insurance/reinsurance subsidiaries, as reported in the Company's financial
statements. To the extent reserves prove to be inadequate after taking into
account available retrocessional coverage including
 
                                       10
<PAGE>
available stop loss protection, the Company would likely have to augment such
reserves and incur a charge to earnings.
 
    Since the early 1980s, the Company's underwriting results have been
adversely affected by claims developing from asbestos-related and environmental
pollution coverage exposures. Significant uncertainties exist with respect to
estimating the ultimate future amounts that may be needed for these types of
claims, especially in view of changes in the legal and tort environment that
affect the development of loss reserves. For asbestos-related claims, such
uncertainties include estimations of the number and value of claims that may be
reported and the maximum value of asbestos-related exposures written by its
clients and thus the Company during expired coverage periods. For environmental
pollution claims, such uncertainties include inconsistent coverage issue
decisions reached in court cases in various jurisdictions, which include the
existence of any insurance coverage at all, what underlying policies provide the
coverage and whether the Company reinsures those policies, whether the releases
of contaminants is one "occurrence" or more for determination of applicable
coverage/policy limits, how pollution exclusions should be applied, whether
clean-up costs constitute covered damage, and whether an insurer has a duty to
defend. In addition, the lack of resolution to the Superfund legislation in
Congress adds further uncertainty to environmental pollution claims costs.
 
    In connection with asbestos, environmental-related and other latent
liabilities coverage exposures ("Latent Liability Exposures"), the Company
strengthened its gross incurred but not reported ("IBNR") loss reserves in the
fourth quarter of 1995 by $587.0 million. See "Results of Operations--Year Ended
December 31, 1995 Compared with Year Ended December 31, 1994." Nevertheless, the
uncertainties inherent in valuing asbestos-related and environmental pollution
claims are not likely to be resolved in the near future. There can be no
assurance that adverse developments from prior years will not continue in the
future, particularly with respect to asbestos and environmental pollution
exposures, or that such adverse developments will not have a material adverse
effect on net income.
 
    The property and casualty reinsurance business is highly competitive.
Competition with respect to the types of reinsurance in which the Company is
engaged is based on many factors, including perceived overall financial strength
of the reinsurer, ratings of the reinsurer by A.M. Best Company ("A.M. Best"),
underwriting expertise, reputation and experience in the lines written, services
offered and speed of claims payment. The Company competes for its business in
the United States and international reinsurance markets with independent
reinsurers, reinsurer subsidiaries or affiliates of insurers, the reinsurance
departments of primary insurers and underwriting syndicates from the United
States and abroad, some of which have greater financial resources than the
Company. The Company also competes with providers of alternative forms of risk
transfer, such as investment banks which offer capital market mechanisms for
primary insurers to transfer insurance risks directly to investors.
 
    On January 29, 1996, A.M. Best affirmed its "A+ (Superior)" rating of
American Re-Insurance, the second highest of A.M. Best's 15 qualitative ratings.
American Re-Insurance has been rated "A+ (Superior)" since March 3, 1993. "A +
(Superior)" is assigned by A.M. Best to those companies which in its opinion
have demonstrated superior overall performance when compared to the standards
established by A.M. Best and have demonstrated a very strong ability to meet
their policyholder and other contractual obligations over a long period of time.
According to A.M. Best, the objectives of its rating system are to evaluate the
factors affecting overall performance of an insurance or reinsurance company and
to provide A.M. Best's opinion of the company's relative financial strength and
ability to meet its obligation to policyholders currently and in the future.
 
    On December 10, 1996, Standard & Poors Corporation ("S&P") raised American
Re-Insurance's claims paying ability rating to "AAA." An "AAA" rating represents
the highest of S&P's ratings. A rating of "AAA" is assigned by S&P to those
companies which, in its opinion, have superior financial security on an absolute
and relative basis and their capacity to meet policyholder obligations is
overwhelming under a variety of economic and underwriting conditions.
 
                                       11
<PAGE>
    There can be no assurance that American Re-Insurance will continue to be
rated "A+ (Superior)" by A.M. Best or "AAA" by S&P.
 
    On December 13, 1996, Moody's Investors Service ("Moody's") raised American
Re-Insurance's financial strength rating to "Aaa." An "Aaa" rating represents
the highest of Moody's 19 qualitative ratings. A rating of "Aaa" is assigned by
Moody's to those companies which in Moody's opinion offer exceptional financial
security.
 
    Ratings have become increasingly important in establishing the competitive
position of a reinsurer. Management believes that a reduction to below an "A"
level in any of American Re-Insurance's ratings could have a material adverse
effect on its financial condition, results of operations and cash flows. A.M.
Best, S&P and Moody's ratings are not in any way a measure of protection offered
to investors in the Notes and should not be relied upon with respect to making
an investment in the Notes. Each of these rating agencies continually reviews
its ratings and there can be no assurance that American Re-Insurance's ratings
will be maintained at current levels in the future.
 
FORWARD-LOOKING STATEMENTS
 
    This Prospectus contains certain forward-looking statements concerning the
Company's operations, economic performance and financial condition, including,
in particular the likelihood of the Company's success in developing and
expanding its business. These statements are based upon a number of assumptions
and estimates which are inherently subject to significant uncertainties and
contingencies, many of which are beyond the control of the Company, and reflect
future business decisions which are subject to change. Some of these assumptions
inevitably will not materialize, and unanticipated events will occur which will
affect the Company's results.
 
                                       12
<PAGE>
                                  THE COMPANY
 
    The Company is the holding company for American Re-Insurance, a reinsurance
company that underwrites property and casualty reinsurance directly in the
United States and international markets. American Re-Insurance was founded in
1917 as the first U.S.- owned reinsurance company. Based on statutory net
premiums written of $1,611.5 million in 1995, American Re-Insurance, ranked as
the third largest property and casualty reinsurer in the U.S. The Company had
total assets of $8,395.6 million and stockholders' equity of $908.8 million at
September 30, 1996.
 
    The Company is a wholly-owned subsidiary of Munchener
Ruckversicherungs-Gesellschaft Aktiengesellschaft in Munchen, a company
organized under the laws of Germany ("Munich Re"). Munich Re is the world's
largest reinsurance company based on 1995 net premiums written, according to
BUSINESS INSURANCE.
 
    American Re-Insurance provides reinsurance directly to primary insurance
companies without the assistance of reinsurance brokers, positioning it as one
of only five, major direct underwriters of property and casualty reinsurance in
the U.S. The other major direct reinsurers are Employers Reinsurance
Corporation, General Reinsurance Corporation, Swiss Reinsurance America
Corporation, and Munich Re, which operates in the United States through its 50%
owned affiliate Munich American Reinsurance Company ("Munich American
Reinsurance"), and through its U.S. branch.
 
    The Company provides both treaty and facultative reinsurance and writes such
reinsurance on both a pro rata and excess of loss basis. Under facultative
reinsurance, the primary insurer cedes and the reinsurer assumes part or all of
the risks insured by the primary insurer under a single primary insurance
policy. Treaty reinsurance is a contractual arrangement, usually renewable
annually, between a primary insurer and a reinsurer under which the primary
insurer must cede and the reinsurer must assume a specified portion of a type or
category of risks. In the case of pro rata reinsurance, the reinsurer, in return
for a predetermined portion or share of the insurance premium charged by the
primary insurer, indemnifies the primary insurer against a predetermined portion
of the losses and LAE of the primary insurer under the covered primary policy or
policies. In the case of excess of loss reinsurance, the reinsurer indemnifies
the primary insurer against all or a specific portion of losses on underlying
insurance policies in excess of a specified dollar amount, known as the
"retention" or "attachment point," most often subject to a negotiated limit.
Premiums payable to the reinsurer by the primary insurer for excess of loss
coverage are not directly proportional to the premiums the primary insurer
receives because the reinsurer does not assume a proportionate risk.
 
                                       13
<PAGE>
    The following table sets forth the mix of the Company's business based on
statutory gross premiums written for years ended December 31, 1992, 1993, 1994
and 1995 and the nine months ended September 30, 1996:
<TABLE>
<CAPTION>
                                                            YEAR ENDED DECEMBER 31,
                           ------------------------------------------------------------------------------------------
<S>                        <C>         <C>        <C>         <C>        <C>         <C>        <C>         <C>        <C>
                                                                                                                          NINE
                                                                                                                         MONTHS
                                                                                                                         ENDED
                                                                                                                       SEPTEMBER
                                                                                                                          30,
                                   1992                   1993                  1994(1)                1995(1)          1996(1)
                           ---------------------  ---------------------  ---------------------  ---------------------  ----------
 
<CAPTION>
                                                  (DOLLARS IN MILLIONS)
<S>                        <C>         <C>        <C>         <C>        <C>         <C>        <C>         <C>        <C>
Treaty Property
  Pro Rata...............  $    303.1       23.1% $    320.0       19.5% $    353.3       18.4% $    419.4       20.9% $    376.0
  Excess of Loss.........       107.4        8.2       218.9       13.4       212.0       11.0       245.2       12.2       187.9
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
    Total................       410.5       31.3       538.9       32.9       565.3       29.4       664.6       33.1       563.9
Treaty Casualty
  Pro Rata...............       235.5       17.9       345.1       21.1       410.8       21.4       374.5       18.6       411.1
  Excess of Loss.........       245.8       18.7       245.3       15.0       360.9       18.8       320.2       16.0       250.8
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
    Total................       481.3       36.6       590.4       36.1       771.7       40.2       694.7       34.6       661.9
Facultative Property
  Pro Rata...............        39.4        3.0        51.1        3.1        56.0        2.9        59.1        3.0        60.5
  Excess of Loss.........        42.4        3.2        62.2        3.8        63.2        3.3        88.8        4.4        77.6
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
    Total................        81.8        6.2       113.3        6.9       119.2        6.2       147.9        7.4       138.1
Facultative Casualty
  Pro Rata...............         0.6        0.1         1.7        0.0         0.6        0.0         0.2        0.0         3.8
  Excess of Loss.........       339.1       25.8       393.3       24.1       466.3       24.2       499.2       24.9       422.5
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
    Total................       339.7       25.9       395.0       24.1       466.9       24.2       499.4       24.9       426.3
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
    Total................  $  1,313.3      100.0% $  1,637.6      100.0% $  1,923.1      100.0% $  2,006.6      100.0% $  1,790.2
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
                           ----------  ---------  ----------  ---------  ----------  ---------  ----------  ---------  ----------
 
<CAPTION>
 
<S>                        <C>
 
<S>                        <C>
Treaty Property
  Pro Rata...............       21.0%
  Excess of Loss.........       10.5
                           ---------
    Total................       31.5
Treaty Casualty
  Pro Rata...............       23.0
  Excess of Loss.........       14.0
                           ---------
    Total................       37.0
Facultative Property
  Pro Rata...............        3.4
  Excess of Loss.........        4.3
                           ---------
    Total................        7.7
Facultative Casualty
  Pro Rata...............        0.2
  Excess of Loss.........       23.6
                           ---------
    Total................       23.8
                           ---------
    Total................      100.0%
                           ---------
                           ---------
</TABLE>
 
- ------------------------
 
(1) The totals for the years ended December 31, 1994 and 1995 and for the nine
    months ended September 30, 1996 include premiums from primary business
    written by American Alternative Insurance Corporation, which was acquired by
    the Company in 1994. The premiums have been allocated to the Facultative
    Casualty Excess of Loss amount.
 
    The Company focuses its treaty marketing efforts on small- to medium-sized
regional property and casualty insurers with annual gross premium writings of
less than $500 million. These regional insurers generally require higher levels
of reinsurance than larger, better capitalized primary insurers and tend to rely
more heavily on the Company for their reinsurance needs. Such regional insurers
also have greater need for the Company's high level of insurance skills and
services. The Company markets its facultative business to large primary
insurers, which comprise the largest segment of the commercial insurance market,
and smaller regional primary insurers whose commercial insurance risks are more
limited in volume and scope. The Company also markets to large commercial
insurance buyers, such as major corporations and governmental entities, seeking
alternatives to the primary insurance companies that traditionally service these
insurance buyers. These buyers, and the captive insurance companies, risk
retention groups, and other self insurance mechanisms they use, are referred to
as the "alternative market". In 1995 and for the first nine months of 1996,
approximately 18.0% and 14.9%, respectively, of the Company's total net premiums
written represented alternative market business.
 
    The Company's business objective is to maximize profitability throughout the
property and casualty underwriting cycle. The Company seeks to achieve this
objective through a strategy of (i) marketing based upon client needs, referred
to by the Company as the "whole account approach," (ii) capitalizing on its
financial resources and position as a direct writer by emphasizing long-term
client relationships, (iii) adjusting its mix of business to react to changing
market conditions, (iv) maintaining a conservative investment portfolio and (v)
utilizing prudent actuarial practices in pricing its business and establishing
its loss reserves.
 
                                       14
<PAGE>
    The Company has developed the whole account approach to develop and deliver
products and services closely tailored to its clients' needs, and to integrate
the marketing of its products and services with the underwriting of reinsurance
risks. Each of the Company's clients is assigned a team of specialists including
treaty, facultative and other services specialists, headed by a client
relationship manager. In addition to underwriting insurance risks, the Company
provides its clients with services including consulting in the areas of
investment management, risk management, actuarial analysis, financial analysis,
claims management, data processing, mergers and acquisitions due diligence
review, reinsurance and insurance brokerage, captive and risk retention group
management services and underwriting management services.
 
    The Company emphasizes long-term relationships with its clients, a strategy
that management believes provides stability to the Company's sources of revenue
during underwriting cycles. The Company believes that its close relationships
with clients arising from the whole account approach, its direct underwriting,
and the extensive services that it offers have led to long-term, stable
relationships with clients based more on quality and variety of service than on
price.
 
    The Company adjusts its mix of business as market conditions change and
opportunities arise. In the protracted soft market that currently exists, the
Company writes more excess of loss business and opportunistic pro-rata treaties
in order to better control the relationship between premiums received and the
risk exposure underwritten. The Company also adjusts its premiums written from
period to period between the traditional and alternative markets, and domestic
and international markets, based on opportunities presented.
 
    The Company follows a conservative investment strategy that emphasizes
maintaining a high-quality fixed income portfolio that generates high current
income. The Company's current investment strategy does not contemplate material
additional investment in non-investment grade securities, commercial real estate
or commercial mortgages. The Company's bond and short-term investment portfolio,
which constitutes 91.1% of the total financial statement value of cash and
investments, had an average S&P quality rating of "AA+" at September 30, 1996,
which remains unchanged from December 31, 1995.
 
    The Company employs a staff of approximately 40 actuaries who are integrated
into all of its major operating processes that include: account selection; risk
evaluation; rating and pricing; return on equity modeling; consulting assistance
to clients; and establishment of the Company's loss reserves. The Company
believes this integration allows for a comprehensive, technical approach to
pricing its business. Different actuarial units support the pricing for each of
the Company's operating divisions. The Company also maintains a Reserve Analysis
Unit, which is responsible for continuously monitoring the Company's loss
reserve position. The Reserve Analysis Unit staff works together with the rating
and pricing actuaries in evaluating the Company's loss reserve position relative
to its pricing levels and mix of business (e.g., property versus casualty,
excess of loss versus pro rata, low versus moderate versus high hazard and
attachment point).
 
    The Company seeks to manage and diversify its risk through careful
underwriting, active claims management, retrocessional arrangements and the
selective commutation of certain reinsurance contracts. The Company's normal
business practice is to retrocede a portion of most risks assumed and to
purchase additional reinsurance for catastrophic events.
 
    In connection with the recent acquisition of the Company by Munich Re,
Munich Re and the Company are contemplating various alternatives for integrating
all or a portion of the operations of American Re-Insurance during 1997 with all
or a portion of the operations of Munich American Reinsurance (50% of which is
owned by Munich Re) and all or a portion of the operations of the United States
branch of Munich Re. There can be no assurance that any such integration will
occur on the timetable currently contemplated or at all, or as to the form that
any such integration could take. Any plan for integration would be subject to,
among other things, an analysis by Munich Re and the Company of the
 
                                       15
<PAGE>
accounting, operational and legal implications of such integration, the
negotiation and execution of definitive agreements as to value and other
matters, as well as a variety of other factors that are beyond the Company's
control, including, without limitation, the consent of certain of the other
shareholders of Munich American Reinsurance and application for and receipt of
insurance and other regulatory approvals. There can be no assurance as to the
impact of any such integration on the business conditions (financial or
otherwise) or prospects of the Company.
 
    Munich American Reinsurance had statutory total admitted assets and
policyholders' surplus of $1,422.3 million and $323.1 million, respectively, as
of December 31, 1995 and $1,526.4 million and $348.3 million, respectively, as
of September 30, 1996. Munich American Reinsurance had $413.5 million and $330.5
million of net written premiums for the year ended December 31, 1995 and the
nine months ended September 30, 1996, respectively. The United States branch of
Munich Re had total statutory admitted assets and statutory policyholders'
surplus of $1,396.2 million and $532.8 million, respectively, as of December 31,
1995 and $1,459.7 million and $595.8 million, respectively, as of September 30,
1996. The United States branch of Munich Re had $299.8 million and $198.1
million of net written premiums for the year ended December 31, 1995 and the
nine months ended September 30, 1996, respectively.
 
    The Company's principal executive offices are located at 555 College Road
East, Princeton, New Jersey 08543, and its telephone number is (609) 243-4200.
 
                                       16
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the consolidated capitalization of the
Company and its subsidiaries at September 30, 1996 and as adjusted to give
effect to the sale of the Old Notes and the application of the net proceeds
therefrom to defease the Company's 10 7/8% Senior Subordinated Debentures due
2004 (the "Subordinated Debentures").
 
<TABLE>
<CAPTION>
                                                                                            SEPTEMBER 30, 1996
                                                                                              (IN MILLIONS)
                                                                                         ------------------------
<S>                                                                                      <C>         <C>
                                                                                           ACTUAL    AS ADJUSTED
                                                                                         ----------  ------------
Senior bank debt.......................................................................  $     75.0   $     75.0
The Notes..............................................................................          --   $    500.0
Subordinated Debentures................................................................       450.0           --
                                                                                         ----------  ------------
    Total Debt.........................................................................       525.0        575.0
Company-obligated mandatorily redeemable preferred securities of subsidiary trust
  holding as all of its assets Junior Subordinated Debentures..........................       237.5        237.5
Stockholders' equity
Common stock, par value $.01 per share; authorized: 125,000,000 shares; issued and
  outstanding: 47,293,014 shares at September 30, 1996.................................         0.5          0.5
Additional paid-in capital.............................................................       715.6        715.6
Retained earnings......................................................................       218.0        184.0(1)
Net unrealized appreciation of investments.............................................        12.5         12.5
Net unrealized loss on foreign exchange................................................       (37.8)       (37.8)
                                                                                         ----------  ------------
    Total stockholders' equity.........................................................       908.8        874.8
                                                                                         ----------  ------------
    Total capitalization...............................................................  $  1,671.3   $  1,687.3
                                                                                         ----------  ------------
                                                                                         ----------  ------------
</TABLE>
 
- ------------------------
 
   
(1) Reflects a one-time extraordinary loss of $34.0 (on an after-tax basis)
    million in connection with the defeasance by the Company in respect of the
    early extinguishment of the Subordinated Debentures.
    
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
<TABLE>
<CAPTION>
                                                                                                                      NINE MONTHS
                                                                                                                         ENDED
                                                                                                  YEAR ENDED           SEPTEMBER
                                                                                                 DECEMBER 31,             30,
                                                                                             --------------------     ------------
<S>                                                                                          <C>   <C>   <C>          <C>     <C>
                                                                                             1993  1994    1995       1995    1996
                                                                                             ----  ----  --------     ----    ----
Ratio of earnings to fixed charges.........................................................   3.1   2.9      (1.3)(2)  3.8     4.4
Pro forma ratio of earnings to fixed charges(1)............................................    --    --      (1.6)(2)  4.8     5.4
</TABLE>
 
- ------------------------
 
(1) Pro forma for the issuance of the Old Notes and the application of the net
    proceeds therefrom to defease the Subordinated Debentures.
 
(2) For the year ended December 31, 1995, earnings were insufficient to cover
    fixed charges by $94.9 million and pro forma earnings would have been
    insufficient to cover pro forma fixed charges by $94.9 million.
 
    Earnings consist of income before income taxes plus fixed charges, net of
capitalized interest. Fixed charges consist of interest expense before reduction
for capitalized interest and one-third of rental expense, which is considered to
be representative of an interest factor.
 
                                       17
<PAGE>
                      SELECTED CONSOLIDATED FINANCIAL DATA
                                 OF THE COMPANY
 
    Set forth below are five years and the most recent interim period of
selected financial information which should be read in conjunction with the
consolidated financial statements and notes of the Company incorporated by
reference from the 1995 10-K and September 10-Q. Financial information is
presented for American Re-Insurance for the year ended December 31, 1991, and
the nine month period ended September 30, 1992, and for the Company for the
three months ended December 31, 1992, and each of the years ended December 31,
1993, 1994 and 1995. The information (other than statutory data) for the year
ended December 31, 1991, and the nine months ended September 30, 1992, was
derived from the audited consolidated financial statements and related notes of
American Re-Insurance. The information (other than statutory data) as of and for
the three months ended December 31, 1992, and each of the years ended December
31, 1993, 1994 and 1995 was derived from the audited consolidated financial
statements and related notes of the Company. The financial data for the nine
months ended September 30, 1996 and 1995, respectively, have been derived from
the Company's unaudited consolidated financial statements as of and for the nine
month period then ended, which, in the opinion of the management of the Company,
includes all adjustments (consisting of normal recurring accruals) necessary for
a fair presentation of results of operations and financial position for the
periods and as of the dates presented. The results of operations for any interim
period are not necessarily indicative of results of operations for the full
year. The statutory data have been derived from statutory financial statements.
Such statutory financial statements are prepared in accordance with statutory
accounting principles, which differ from generally accepted accounting
principles ("GAAP").
<TABLE>
<CAPTION>
                                                             THE                                       THE COMPANY
                            AMERICAN RE-INSURANCE          COMPANY                      ------------------------------------------
                            (PREDECESSOR COMPANY)       --------------   COMBINED(1)                                       NINE
                        ------------------------------                  --------------                                    MONTHS
                                         NINE MONTHS     THREE MONTHS                                                      ENDED
                          YEAR ENDED        ENDED           ENDED         YEAR ENDED              YEAR ENDED             SEPTEMBER
                         DECEMBER 31,   SEPTEMBER 30,    DECEMBER 31,    DECEMBER 31,            DECEMBER 31,               30,
                        --------------  --------------  --------------  --------------  -------------------------------  ---------
                             1991            1992            1992            1992         1993       1994       1995       1995
                        --------------  --------------  --------------  --------------  ---------  ---------  ---------  ---------
<S>                     <C>             <C>             <C>             <C>             <C>        <C>        <C>        <C>
                                                       (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
OPERATING DATA:
Net premiums
  written.............    $    901.7      $    741.7      $    278.6      $  1,020.4    $ 1,363.4  $ 1,553.3  $ 1,629.5  $ 1,238.2
Net premiums earned...         930.1           692.7           270.7           963.4      1,249.9    1,461.4    1,530.9    1,151.0
Losses and LAE(2).....         677.6           472.0           201.3           673.3        796.9    1,011.0    1,340.2      771.2
Underwriting
  expenses............         256.2           245.5            76.4           322.0        403.5      439.3      452.4      337.5
Underwriting gain
  (loss)..............          (3.7)          (24.8)           (7.1)          (31.9)        49.5       11.1     (261.7)      42.3
Net investment
  income..............         220.7           165.3            42.0           207.3        165.1      188.7      222.6      166.0
Net realized capital
  gains (losses)......          10.4             4.2            (2.1)            2.1          5.1       (0.2)       4.7        4.4
Interest expense......            --              --            24.9              --         66.1       60.0       60.7       47.7
Income (loss) before
  income taxes........         202.8           128.9           (10.5)             --        144.0      120.7     (159.5)     149.7
Income taxes
  (benefits)..........          44.7            28.2            (7.0)             --         36.0       23.2      (76.6)      37.4
Income (loss) before
  distributions on
  preferred securities
  of subsidiary trust,
  extraordinary loss,
  and cumulative
  effect of accounting
  change..............         158.1           100.7            (3.5)             --        108.0       97.5      (82.9)     112.3
 
<CAPTION>
 
                          1996
                        ---------
<S>                     <C>
 
OPERATING DATA:
Net premiums
  written.............  $ 1,432.8
Net premiums earned...    1,282.3
Losses and LAE(2).....      820.8
Underwriting
  expenses............      374.2
Underwriting gain
  (loss)..............       87.3
Net investment
  income..............      186.0
Net realized capital
  gains (losses)......        2.2
Interest expense......       40.5
Income (loss) before
  income taxes........      215.0
Income taxes
  (benefits)..........       60.3
Income (loss) before
  distributions on
  preferred securities
  of subsidiary trust,
  extraordinary loss,
  and cumulative
  effect of accounting
  change..............      154.7
</TABLE>
 
                                       18
<PAGE>
<TABLE>
<CAPTION>
                                                             THE                                       THE COMPANY
                            AMERICAN RE-INSURANCE          COMPANY                      ------------------------------------------
                            (PREDECESSOR COMPANY)       --------------   COMBINED(1)                                       NINE
                        ------------------------------                  --------------                                    MONTHS
                                         NINE MONTHS     THREE MONTHS                                                      ENDED
                          YEAR ENDED        ENDED           ENDED         YEAR ENDED              YEAR ENDED             SEPTEMBER
                         DECEMBER 31,   SEPTEMBER 30,    DECEMBER 31,    DECEMBER 31,            DECEMBER 31,               30,
                        --------------  --------------  --------------  --------------  -------------------------------  ---------
                             1991            1992            1992            1992         1993       1994       1995       1995
                        --------------  --------------  --------------  --------------  ---------  ---------  ---------  ---------
                                                       (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                     <C>             <C>             <C>             <C>             <C>        <C>        <C>        <C>
Distributions on
  preferred securities
  of subsidiary
  trust...............        --              --              --              --           --         --           (4.4)      (1.1)
Income (loss) before
  extraordinary loss
  and cumulative
  effect of accounting
  change..............         158.1           100.7            (3.5)         --            108.0       97.5      (87.3)     111.2
Extraordinary loss,
  net of applicable
  income tax effect...        --              --              --              --            (26.6)    --           (0.3)      (0.3)
Cumulative effect of
  accounting change,
  net of applicable
  income tax effect...        --              --              --              --             17.8     --         --         --
Net income (loss)
  before preferred
  dividend............         158.1           100.7            (3.5)         --             99.3       97.5      (87.6)     110.9
Paid-in-kind preferred
  dividends...........        --              --                 2.5          --              0.9     --         --         --
Net income (loss)
  available to common
  shareholders........         158.1           100.7            (6.0)         --             98.4       97.5      (87.6)     110.9
EARNINGS (LOSS) PER
  SHARE:
Income (loss) before
  extraordinary loss
  and cumulative
  effect of accounting
  change..............        --              --          $    (0.10)         --        $    2.24  $    2.01  $   (1.85) $    2.29
Extraordinary loss,
  net of tax..........        --              --              --              --            (0.55)    --          (0.01)     (0.01)
Cumulative effect of
  accounting change,
  net of tax..........        --              --              --              --             0.37     --         --         --
Paid-in-kind preferred
  dividend............        --              --               (0.08)         --            (0.02)    --         --         --
                        --------------  --------------  --------------  --------------  ---------  ---------  ---------  ---------
Net income (loss) per
  common share........        --              --          $    (0.18)         --        $    2.04  $    2.01  $   (1.86) $    2.28
DIVIDENDS DECLARED PER
  COMMON SHARE:
Cash dividend per
  common share........        --              --              --              --           --         --      $    0.32  $    0.24
OTHER GAAP OPERATING
  DATA (3):
Loss and LAE ratio....          72.9%           68.1%           74.4%           69.9%        63.8%      69.2%      87.5%      67.0%
Underwriting expense
  ratio...............          27.5            35.5            28.2            33.4         32.3       30.0       29.6       29.3
                        --------------  --------------  --------------  --------------  ---------  ---------  ---------  ---------
Combined ratio........         100.4%          103.6%          102.6%          103.3%        96.1%      99.2%     117.1%      96.3%
 
<CAPTION>
 
                          1996
                        ---------
 
<S>                     <C>
Distributions on
  preferred securities
  of subsidiary
  trust...............       (9.8)
Income (loss) before
  extraordinary loss
  and cumulative
  effect of accounting
  change..............      144.9
Extraordinary loss,
  net of applicable
  income tax effect...     --
Cumulative effect of
  accounting change,
  net of applicable
  income tax effect...     --
Net income (loss)
  before preferred
  dividend............      144.9
Paid-in-kind preferred
  dividends...........     --
Net income (loss)
  available to common
  shareholders........      144.9
EARNINGS (LOSS) PER
  SHARE:
Income (loss) before
  extraordinary loss
  and cumulative
  effect of accounting
  change..............  $    2.96
Extraordinary loss,
  net of tax..........     --
Cumulative effect of
  accounting change,
  net of tax..........     --
Paid-in-kind preferred
  dividend............     --
                        ---------
Net income (loss) per
  common share........  $    2.96
DIVIDENDS DECLARED PER
  COMMON SHARE:
Cash dividend per
  common share........  $    0.30
OTHER GAAP OPERATING
  DATA (3):
Loss and LAE ratio....       64.0%
Underwriting expense
  ratio...............       29.2
                        ---------
Combined ratio........       93.2%
</TABLE>
 
                                       19
<PAGE>
<TABLE>
<CAPTION>
                                                             THE                                       THE COMPANY
                            AMERICAN RE-INSURANCE          COMPANY                      ------------------------------------------
                            (PREDECESSOR COMPANY)       --------------   COMBINED(1)                                       NINE
                        ------------------------------                  --------------                                    MONTHS
                                         NINE MONTHS     THREE MONTHS                                                      ENDED
                          YEAR ENDED        ENDED           ENDED         YEAR ENDED              YEAR ENDED             SEPTEMBER
                         DECEMBER 31,   SEPTEMBER 30,    DECEMBER 31,    DECEMBER 31,            DECEMBER 31,               30,
                        --------------  --------------  --------------  --------------  -------------------------------  ---------
                             1991            1992            1992            1992         1993       1994       1995       1995
                        --------------  --------------  --------------  --------------  ---------  ---------  ---------  ---------
                                                       (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                     <C>             <C>             <C>             <C>             <C>        <C>        <C>        <C>
STATUTORY DATA (4):
Ratio of net premiums
  written to
  surplus.............         1.22x          --              --                1.15x        1.26x      1.39x      1.45x      1.32x
Policyholder's
  surplus.............    $    735.7          --              --          $    875.8    $ 1,079.3  $ 1,104.1  $ 1,109.6  $ 1,209.8
Loss and LAE ratio....          73.0%         --              --                68.5%        64.8%      71.2%      88.9%      67.9%
Underwriting expense
  ratio...............          29.7          --              --                34.3         34.7       32.6       32.1       31.7
                        --------------  --------------  --------------  --------------  ---------  ---------  ---------  ---------
Combined ratio........         102.7%         --              --               102.8%        99.5%     103.8%     121.0%      99.6%
BALANCE SHEET DATA (AT
  END OF PERIOD):
Total investments and
  cash................    $  2,752.3          --          $  2,833.8          --        $ 3,153.3  $ 3.308.9  $ 3,957.5  $ 3,783.4
Total assets..........       3,812.5(5)       --             5,886.9          --          6,231.4    6,677.9    7,814.4    7,286.8
Loss and LAE
  reserves............       2,063.5(5)       --             3,523.9          --          3,685.7    3,971.9    4,790.0    4,213.4
Senior bank debt......        --              --               575.0          --            275.0      200.0       75.0     --
Senior subordinated
  debt................        --              --               450.0          --            450.0      450.0      450.0      450.0
Company-obligated
  mandatorily
  redeemable preferred
  securities of
  subsidiary trust
  holding as all its
  assets Junior
  Subordinated
  Debentures..........        --              --              --              --           --         --          237.5      237.5
Stockholders' equity..         966.0          --               386.3          --            797.2      789.2      847.1      999.9
 
<CAPTION>
 
                          1996
                        ---------
 
<S>                     <C>
STATUTORY DATA (4):
Ratio of net premiums
  written to
  surplus.............       1.54x
Policyholder's
  surplus.............  $ 1,182.7
Loss and LAE ratio....       64.4%
Underwriting expense
  ratio...............       30.3
                        ---------
Combined ratio........       94.7%
BALANCE SHEET DATA (AT
  END OF PERIOD):
Total investments and
  cash................  $ 4,075.4
Total assets..........    8,395.6
Loss and LAE
  reserves............    4,938.1
Senior bank debt......       75.0
Senior subordinated
  debt................      450.0
Company-obligated
  mandatorily
  redeemable preferred
  securities of
  subsidiary trust
  holding as all its
  assets Junior
  Subordinated
  Debentures..........      237.5
Stockholders' equity..      908.8
</TABLE>
 
- ------------------------
 
(1) Represents the sum of American Re-Insurance's results for the nine months
    ended September 30, 1992 and American Re-Insurance's results for the three
    months ended December 31, 1992. The combined sum has been presented for
    comparison of significant operating data.
 
(2) "LAE" means loss adjustment expenses.
 
(3) GAAP loss and LAE ratio represents the sum of losses and LAE as a percentage
    of net premiums earned. GAAP underwriting expense ratio represents
    underwriting expenses as a percentage of net premiums earned. GAAP combined
    ratio represents the sum of the GAAP loss and LAE ratio and GAAP
    underwriting expense ratio.
 
(4) Represents statutory data for the applicable period. Ratio of net premiums
    written to surplus represents statutory net premiums written for the period
    over statutory policyholders' surplus at the end of such period. Statutory
    loss and LAE ratio represents the sum of statutory losses and LAE as a
    percentage of statutory net premiums earned. Statutory underwriting expense
    ratio represents statutory underwriting expenses as a percentage of
    statutory net premiums written. Statutory combined ratio represents the sum
    of the statutory loss and LAE ratio and the statutory underwriting expense
    ratio.
 
(5) Stated in accordance with the gross financial reporting requirements as
    prescribed by Financial Accounting Standard No. 113, "Accounting and
    Reporting for Reinsurance of Short-Duration and Long Duration Contracts."
 
                                       20
<PAGE>
                             RESULTS OF OPERATIONS
 
   
NINE MONTHS ENDED SEPTEMBER 30, 1996 COMPARED WITH NINE MONTHS ENDED SEPTEMBER
  30, 1995
    
 
    The Company's net premiums written increased 15.7% to $1,432.8 million for
the nine months ended September 30, 1996, from $1,238.2 million for the same
period in 1995. The increase in net premiums written was primarily attributable
to increased writings in both treaty and facultative business. Total treaty net
premiums written increased 14.8% to $1,020.5 million for the nine months ended
September 30, 1996, from $888.6 million for the same period in 1995. In this
connection, the Company's domestic operations treaty net premiums written
increased 13.7% to $618.5 million for the nine months ended September 30, 1996,
from $544.1 million for the same period in 1995. Total facultative net premiums
written increased 17.9% to $412.3 million for the nine months ended September
30, 1996, from $349.6 million for the same period in 1995. Accounting for this
increase was the Company's domestic operations large finite risk program of
$79.6 million written in the third quarter of 1996.
 
    The Company's net premiums earned increased 11.4% to $1,282.3 million for
the nine months ended September 30, 1996, from $1,151.0 million for the same
period in 1995. The increase in net premiums earned was attributable to a 16.0%
increase in total treaty net premiums earned to $937.5 million for the 1996
period from $808.5 million for the 1995 period, while facultative net premiums
earned increased 0.7% to $344.8 million for the 1996 period, from $342.5 million
for the 1995 period. The increase in net premiums earned was primarily
attributable to the increase in net premiums written for the nine months ended
September 30, 1996, as well as the timing of premiums earned on business in
force.
 
    Net losses and LAE incurred increased 6.4% to $820.8 million for the nine
months ended September 30, 1996, from $771.2 million for the same period in
1995. This increase was primarily attributable to the increase in the proportion
of net earned premium exposures that relate to treaties, which contains a higher
ultimate accident year loss ratio than facultative business, partially offset by
a decrease in losses due to adverse development from claims covering asbestos,
environmental-related and other Latent Liability Exposures. Due to the provision
made for loss reserve strengthening for Latent Liability Exposures in the fourth
quarter of 1995, the Company incurred no losses for Latent Liability Exposures
in the nine-month period ended September 30, 1996, compared to $54.7 million for
the same period in 1995.
 
    Underwriting expense, comprised of commission expense plus operating
expense, increased 10.9% to $374.3 million for the nine months ended September
30, 1996, from $337.5 million for the same period in 1995. This increase was
primarily due to an increase in commission expense of 14.1% to $274.6 million
for the nine months ended September 30, 1996, from $240.7 million for the same
period in 1995. This result was partially due to an increase in writings of pro
rata treaty premiums. Operating expenses increased 2.9% to $99.6 million for the
nine months ended September 30, 1996, from $96.8 million for the same period in
1995, due to an increase in overhead expenses.
 
    The Company experienced an underwriting gain (net premiums earned minus
losses and LAE incurred and underwriting expenses) of $87.3 million for the nine
months ended September 30, 1996, compared to $42.3 million for the same period
in 1995. On a GAAP basis, the Company's loss ratio decreased to 64.0% for the
nine months ended September 30, 1996, from 67.0% for the same period in 1995
(which included 4.8 points for adverse development for Latent Liability
Exposures), while the underwriting expense ratio decreased to 29.2% for the nine
months ended September 30, 1996, from 29.3% for the same period in 1995. The
reduction in adverse loss development for Latent Liability Exposures in the 1996
period was partially offset by the increase in the proportion of net premiums
earned that relates to treaties, which contains a higher accident year loss
ratio than facultative business. As a result of the decrease in the loss ratio,
the GAAP combined ratio for the nine months ended September 30, 1996, decreased
to 93.2%, from 96.3% for the same period in 1995.
 
                                       21
<PAGE>
    Pre-tax net investment income increased 12.0% to $186.0 million for the nine
months ended September 30, 1996, from $166.0 million for the same period in
1995. This increase was primarily attributable to an increase in the invested
asset base, in addition to a higher overall effective interest rate in the
investment portfolio. The Company's after-tax net investment income increased by
10.5% to $137.6 million for the nine months ended September 30, 1996, from
$124.5 million for the same period in 1995. The after-tax net investment income
increase was less than the pre-tax net investment increase due to the Company's
decision to continue to increase the percentage of taxable fixed maturity
investments in its portfolio, based on the relative attractiveness of investment
yields on highly rated taxable instruments, in addition to tax-planning
considerations.
 
    The Company's interest expense decreased by 15.0% to $40.5 million for the
nine months ended September 30, 1996, from $47.7 million for the same period in
1995. This decrease was primarily attributable to the lower level of senior bank
debt outstanding during the nine months ended September 30, 1996, compared to
the 1995 period, under the Company's revolving credit facility.
 
    The Company realized net capital gains of $2.2 million for the nine months
ended September 30, 1996, compared to net capital gains of $4.4 million for the
same period in 1995. This change was primarily due to net capital gains of $2.1
million realized on bond sales for the nine months ended September 30, 1996,
compared to net capital gains of $3.4 million realized on bond sales for the
same period in 1995.
 
    Other income increased by 34.0% to $35.1 million for the nine months ended
September 30, 1996, from $26.2 million for the same period in 1995. The increase
in the 1996 period was primarily attributable to an increase of $12.3 million in
fee subsidiary revenue. Other expenses increased by 32.4% to $55.0 million for
the nine months ended September 30, 1996 from $41.5 million for the same period
in 1995. The increase in the 1996 period was attributable to an increase in fee
subsidiary expenses of $15.4 million, partially offset by a decrease of $1.5
million in the provision for the allowance for doubtful accounts.
 
    Income before income taxes increased by 43.6% to $215.0 million for the nine
months ended September 30, 1996, from $149.7 million for the same period in
1995. This increase was primarily attributable to increased underwriting gain
and investment income. Federal and foreign income taxes increased by 61.3% to
$60.3 million for the nine months ended September 30, 1996, from $37.4 million
for the same period in 1995. This increase was due to the increase in income
before income taxes, in addition to a decrease in tax-exempt investment income
earned by the Company.
 
    The Company recognized an after-tax charge of $9.8 million for the nine
months ended September 30, 1996, compared to $1.1 million for the same period in
1995, representing the Company's minority interest in the earnings of American
Re Capital. The charge is due to the obligations incurred by American Re Capital
("American Re Capital"), a single-purpose, wholly-owned subsidiary trust in
which the Company has a minority interest, on its 8 1/2% Cumulative Quarterly
Income Preferred Securities ("QUIPS"), which were issued August 30, 1995.
 
    In the third quarter of 1995, the Company recognized an extraordinary
non-cash after-tax loss of $0.3 million representing the write-off of
capitalized financing fees for the Company's prepaid revolving bank credit
agreement. There was no comparable charge for the Company in 1996.
 
    Net income to common stockholders increased by 30.7% to $144.9 million for
the nine months ended September 30, 1996, from $110.9 million for the same
period in 1995. Primary earnings per share to common stockholders increased by
29.8% to $2.96 per share for the nine months ended September 30, 1996, from
$2.28 per share for the same period in 1995. There were 49.0 million weighted
average shares and common stock equivalents outstanding during the nine months
ended September 30, 1996, compared to 48.6 million outstanding during the same
period in 1995.
 
                                       22
<PAGE>
YEAR ENDED DECEMBER 31, 1995 COMPARED WITH YEAR ENDED DECEMBER 31, 1994
 
    The Company's net premiums written increased 4.9% to $1,629.5 million for
the year ended December 31, 1995, from $1,553.3 million in 1994. Total treaty
net premiums written increased 2.3% to $1,128.2 million for 1995, from $1,103.1
million for 1994, with increases in domestic operations' and international
operations' treaty net premiums written, partially offset by a decline in Am-Re
Managers, Inc. treaty net premiums written. Facultative net premiums written
increased 11.4% to $501.3 million for 1995, from $450.2 million for 1994,
primarily due to expansion of existing accounts. International net premiums
written, which are included in the treaty and facultative amounts stated above,
were $380.5 million or 23.4% of total net premiums written for 1995, compared to
$309.3 million, or 19.9% of total net premiums written for 1994. The Company
believes that the increase in international premium writings can be attributed
to its continued success in implementing its direct whole account marketing
approach, as well as increasing opportunities presented in the European market.
 
    The Company's net premiums earned increased 4.8% to $1,530.9 million for the
year ended December 31, 1995, from $1,461.4 million in 1994. This increase in
earned premiums was primarily attributable to the increase in premiums written
for 1995, as well as the timing of premiums earned on business in force.
 
    Net losses and LAE incurred increased 32.6% to $1,340.2 million for the year
ended December 31, 1995, from $1,011.0 million in 1994. This increase was
primarily attributable to a $347.4 million charge for loss reserve
strengthening, primarily due to increases in net Latent Liability Exposures in
1995. The year ended December 31, 1995 included $10.0 million of catastrophe
losses for various Caribbean storms, compared to $66.1 million in catastrophe
losses incurred in 1994 from the Northridge Earthquake.
 
    During the fourth quarter of 1995, the Company undertook and concluded a
major initiative to reevaluate its reserves for Latent Liability Exposures.
Factors considered in this process included: (i) the firming of case law in many
jurisdictions with respect to coverage decisions on Latent Liability Exposures,
which has affected settlement activity of the Company's clients, (ii) greater
quantification of potential liabilities at the commercial risk level, which in
turn allows for more accurate potential liability information for insurers and
ultimately reinsurers, (iii) development of an enhanced claims information
system at the Company, which allowed construction of a data base from which
estimates with respect to Latent Liability Exposures and the related reinsurance
and retrocessional coverage accruing to the benefit of the Company could be
reasonably estimated, (iv) efforts taken by the insurance industry and insured
parties to quantify exposure to environmental liability in light of Superfund
reform initiatives in the United States Congress, and (v) the extensive due
diligence consulting activities of AM-RE Consultants, Inc., which have allowed
AM-RE Consultants, Inc. to gain knowledge of and evaluate actuarial modeling and
reserving, and claims handling methodologies for Latent Liability Exposures.
 
    As a result of this reevaluation, the Company announced on January 29, 1996,
that in the fourth quarter of 1995 it increased its IBNR loss reserves for
Latent Liability Exposures, which relate primarily to accident years prior to
1986, by $587.0 million. Cessions to specific retrocessional arrangements, net
of a reserve for uncollectible reinsurance for this reserve charge, were $119.0
million. As a result, the net increase to loss reserves for Latent Liability
Exposures recognized by the Company at December 31, 1995, was $468.0 million.
After cession, the net charge for loss reserve strengthening was $347.4 million,
($231.0 million, net of tax).
 
    Underwriting expense, comprised of commission expense plus operating
expense, increased 3.0% to $452.4 million for the year ended December 31, 1995,
from $439.3 million in 1994. Commission expense increased slightly to $322.4
million for the year ended December 31, 1995, from $321.5 million in 1994.
Operating expenses increased 10.4% to $130.0 million in 1995 from $117.8 million
in 1994, primarily due to increased overhead expense, in addition to $4.0
million of expense associated with an
 
                                       23
<PAGE>
ongoing information systems and processes reengineering effort the Company
commenced in mid-1995.
 
    The Company experienced an underwriting loss (net premiums earned minus
losses and LAE incurred and underwriting expenses) of $261.7 million for the
year ended December 31, 1995, compared to an underwriting gain of $11.1 million
in 1994. The change in the underwriting result was attributable to the charge
for loss reserve strengthening recognized in 1995. On a GAAP basis, the
Company's loss ratio increased to 87.5% in 1995 (inclusive of 20.4 points due to
the charge for loss reserve strengthening and 0.6 points due to catastrophe
losses), from 69.2% in 1994 (inclusive of 4.5 points from catastrophe losses),
while the underwriting expense ratio decreased to 29.6% in 1995 from 30.0% in
1994. Primarily as a result of the loss reserve strengthening, the Company's
1995 GAAP combined ratio increased to 117.1% from 99.2% for 1994.
 
    Pre-tax net investment income increased 18.0% to $222.6 million for the year
ended December 31, 1995, from $188.7 million in 1994. This increase was
primarily attributable to the increase in invested assets, as well as a higher
overall effective interest rate in the investment portfolio. The Company's
after-tax net investment income increased by 14.2% to $166.8 million in 1995
from $146.0 million in 1994. The after-tax net investment income increase was
less than the pre-tax net investment income increase due to the Company's
decision to continue to increase the percentage of taxable fixed maturity
investments in its portfolio, based on the relative attractiveness of investment
yields on highly rated taxable instruments.
 
    The Company's interest expense decreased by 1.2% to $60.7 million for the
year ended December 31, 1995, from $60.0 million in 1994. This increase was due
to interest rate swap expense of $2.4 million for the year ended December 31,
1995, compared to interest rate swap recoveries of $3.1 million in 1994. The
change in the impact of the interest rate swap was partially offset by a 39.4%
decrease, or $5.0 million, in bank credit-related interest expense, due to the
lower level of senior bank debt outstanding in 1995, and the subsequent
retirement of the Company's revolving bank credit facility with proceeds
received from the sale of the QUIPS in 1995.
 
    The Company realized net capital losses of $4.7 million for the year ended
December 31, 1995, compared to net capital losses of $0.2 million in 1994. This
change was primarily due to net capital gains of $4.3 million realized on bond
sales in 1995, compared to net capital losses of $0.3 million realized on bond
sales in 1994.
 
    Other income increased by 36.7% to $39.1 million for the year ended December
31, 1995, from $28.6 million in 1994. This increase was primarily attributable
to an increase in fee subsidiary revenue. Other expenses increased to $103.4
million in 1995 from $47.5 million in 1994. The increase in the 1995 period was
primarily due to a $9.6 million increase in subsidiary expenses, and a $34.5
million increase in the provision for the allowance of uncollectible reinsurance
related to the charge for loss reserve strengthening in 1995.
 
    The Company incurred a loss before income taxes, distributions on preferred
securities of subsidiary trust, and extraordinary loss of $159.5 million for the
year ended December 31, 1995, compared to income of $120.7 million in 1994.
Federal and foreign income tax benefits were $76.6 million for the year ended
December 31, 1995, compared to tax expense of $23.2 million in 1994.
 
    The Company incurred an after-tax expense of $4.4 million for the year ended
December 31, 1995, representing the Company's minority interest in the earnings
of American Re Capital. The charge was due to the distributions paid on the
QUIPS. There was no comparable charge for the Company in the 1994 period.
 
    In 1995, the Company recognized an extraordinary, non-cash after-tax loss of
$0.3 million, representing the write-off of capitalized financing fees from the
revolving bank credit agreement after the obligation was paid in full. There was
no comparable charge for the Company in 1994.
 
                                       24
<PAGE>
    The Company experienced a net loss to common stockholders of $87.6 million
for the year ended December 31, 1995, compared to net income of $97.5 million in
1994. The net loss per share to common stockholders was $1.86 for the year ended
December 31, 1995, compared to primary net income per share of $2.01 in 1994.
There were 47.1 million weighted average shares outstanding during the year
ended December 31, 1995, compared to 48.5 million share and share equivalents
outstanding during the same period in 1994. Share equivalents were not included
in the earnings per share calculations for the year ended December 31, 1995, as
the effect would have been antidilutive.
 
RECENT DEVELOPMENTS
 
    In connection with the acquisition by Munich Re of the Company, the Company
will record a one-time charge to operating earnings of approximately of $36.1
million ($35.1 million on an after-tax basis), consisting primarily of financial
advisory fees in the fourth quarter of 1996. In connection with the defeasance
by the Company of the Subordinated Debentures, the Company will record a
one-time extraordinary loss of approximately $34.0 million (on an after-tax
basis) in respect of the early extinguishment of the Subordinated Debentures in
the fourth quarter of 1996.
 
                                       25
<PAGE>
                               THE EXCHANGE OFFER
 
GENERAL
 
    The Company hereby offers, upon the terms and subject to the conditions set
forth in this Prospectus and in the accompanying Letter of Transmittal (which
together constitute the Exchange Offer), to exchange up to $500 million
aggregate principal amount of Exchange Notes for a like aggregate principal
amount of Old Notes properly tendered on or prior to the Expiration Date and not
withdrawn as permitted pursuant to the procedures described below. The Exchange
Offer is being made with respect to all of the Old Notes.
 
   
    As of the date of this Prospectus, $500,000,000 aggregate principal amount
of the Old Notes is outstanding. This Prospectus, together with the Letter of
Transmittal, is first being sent on or about February 14, 1997, to all holders
of Old Notes known to the Company. The Company's obligation to accept Old Notes
for exchange pursuant to the Exchange Offer is subject to certain conditions set
forth under "Certain Conditions to the Exchange Offer" below. The Company
currently expects that each of the conditions will be satisfied and that no
waivers will be necessary.
    
 
PURPOSE OF THE EXCHANGE OFFER
 
    The Old Notes were issued on December 24, 1996 in a transaction exempt from
the registration requirements of the Securities Act. Accordingly, the Old Notes
may not be reoffered, resold, or otherwise transferred unless so registered or
unless an applicable exemption from the registration and prospectus delivery
requirements of the Securities Act is available.
 
    In connection with the issuance and sale of the Old Notes, the Company
entered into the Registration Rights Agreement, which requires the Company to
file with the Commission a registration statement relating to the Exchange Offer
not later than 45 days after the closing of the sale of the Old Notes (the
"Closing Date") and to use its best efforts to cause the registration relating
to the Exchange Offer to become effective under the Securities Act not later
than 180 days after the Closing Date, and the Exchange Offer to be consummated
within 10 business days of the effectiveness of the Registration Statement (or
if obligated to file the Shelf Registration Statement, the Company will use its
best efforts to file the Shelf Registration Statement with the Commission on or
prior to the earliest to occur of 90 days after the date on which the Company is
notified by the Commission or otherwise determines that it is not required to
file the Exchange Offer Registration Statement or permitted to consummate the
Exchange Offer or prior to 45 days after the Closing Date). A copy of the
Registration Rights Agreement has been filed as an exhibit to the Registration
Statement.
 
    The Exchange Offer is being made by the Company to satisfy its obligations
with respect to the Registration Rights Agreement. The term "Holder," with
respect to the Exchange Offer, means any person in whose name Old Notes are
registered on the books of the Company or any other person who has obtained a
properly completed bond power from the registered holder, or any person whose
Old Notes are held of record by The Depository Trust Company. Other than
pursuant to the Registration Rights Agreement, the Company is not required to
file any registration statement to register any outstanding Old Notes. Holders
of Old Notes who do not tender their Old Notes or whose Old Notes are tendered
but not accepted would have to rely on exemptions to registration requirements
under the securities laws, including the Securities Act, if they wish to sell
their Old Notes.
 
    The Company is making the Exchange Offer in reliance on the position of the
Staff of the Commission as set forth in certain interpretive letters addressed
to third parties in other transactions. However, the Company has not sought its
own interpretive letter and there can be no assurance that the Staff would make
a similar determination with respect to the Exchange Offer as it has in such
interpretive letters to third parties. Based on these interpretations by the
Staff, the Company believes that the Exchange Notes issued pursuant to the
Exchange Offer in exchange for Old Notes may be offered for
 
                                       26
<PAGE>
resale, resold and otherwise transferred by a Holder (other than any Holder who
is a broker-dealer or an "affiliate" of the Company within the meaning of Rule
405 of the Securities Act) without further compliance with the registration and
prospectus delivery requirements of the Securities Act, provided that such
Exchange Notes are acquired in the ordinary course of such Holder's business and
that such Holder is not participating, and has no arrangement or understanding
with any person to participate, in a distribution (within the meaning of the
Securities Act) of such Exchange Notes. See "--Resale of Exchange Notes." Each
broker-dealer that receives Exchange Notes for its own account in exchange for
Old Notes, where such Old Notes are acquired by such broker-dealer as a result
of market-making activities or other trading activities, must acknowledge that
it will deliver a prospectus in connection with any resale of such Exchange
Notes. See "Plan of Distribution."
 
TERMS OF THE EXCHANGE
 
    The Company hereby offers to exchange, subject to the conditions set forth
herein and in the Letter of Transmittal accompanying this Prospectus, $1,000 in
principal amount of Exchange Notes for each $1,000 in principal amount of the
Old Notes. The terms of the Exchange Notes are identical in all material
respects to the terms of the Old Notes for which they may be exchanged pursuant
to this Exchange Offer, except that the Exchange Notes will generally be freely
transferable by holders thereof and will not be subject to any covenant
regarding registration. The Exchange Notes will evidence the same indebtedness
as the Old Notes and will be entitled to the benefits of the Indenture. See
"Description of Exchange Notes."
 
    The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Old Notes being tendered for exchange.
 
    The Company has not requested, and does not intend to request, an
interpretation by the staff of the Commission with respect to whether the
Exchange Notes issued pursuant to the Exchange Offer in exchange for the Old
Notes may be offered for sale, resold or otherwise transferred by a holder
without compliance with the registration and prospectus delivery provisions of
the Securities Act. Instead, based on an interpretation by the Staff of the
Commission set forth in a series of no-action letters issued to third parties,
the Company believes that Exchange Notes issued pursuant to the Exchange Offer
in exchange for Old Notes may be offered for sale, resold and otherwise
transferred by any holder of such Exchange Notes (other than any such holder
that is a broker-dealer or is an "affiliate" of the Company within the meaning
of Rule 405 under the Securities Act) without compliance with the registration
and prospectus delivery provisions of the Securities Act, provided that such
Exchange Notes are acquired in the ordinary course of such holder's business and
such holder has no arrangement or understanding with any person to participate
in the distribution of such Exchange Notes and neither such holder nor any other
such person is engaging in or intends to engage in a distribution of such
Exchange Notes. Since the Commission has not considered the Exchange Offer in
the context of a no-action letter, there can be no assurance that the staff of
the Commission would make a similar determination with respect to the Exchange
Offer. Any holder who is an affiliate of the Company or who tenders in the
Exchange Offer for the purpose of participating in a distribution of the
Exchange Notes cannot rely on such interpretation by the staff of the Commission
and must comply with the registration and prospectus delivery requirements of
the Securities Act in connection with any resale transaction. Each holder, other
than a broker-dealer, must acknowledge that it is not engaged in, and does not
intend to engage in, a distribution of Exchange Notes. Each broker-dealer that
receives Exchange Notes for its own account in exchange for Old Notes, where
such Old Notes were acquired by such broker-dealer as a result of market-making
activities or other trading activities, must acknowledge that it will deliver a
prospectus in connection with any resale of such Exchange Notes. See "Plan of
Distribution."
 
    Interest on the Old Notes has accrued from the original date of issuance
thereof, December 24, 1996 and will cease to accrue on the date the Exchange
Notes are exchanged for the Old Notes. Interest on the Exchange Notes will
accrue from the date the Exchange Notes are exchanged for Old Notes and
 
                                       27
<PAGE>
is payable in cash semi-annually in arrears on June 15 and December 15 of each
year, commencing June 15, 1997.
 
    Tendering holders of the Old Notes shall not be required to pay brokerage
commissions or fees or, subject to the instructions in the Letter of
Transmittal, transfer taxes with respect to the exchange of the Old Notes
pursuant to the Exchange Offer.
 
EXPIRATION DATE; EXTENSION; TERMINATION; AMENDMENT
 
   
    The Exchange Offer will expire at 12:00 midnight, New York City time, on
March 14, 1997, unless the Company in its sole discretion, has extended the
period of time for which the Exchange Offer is open (such date, as it may be
extended, is referred to herein as the "Expiration Date"). The Expiration Date
will be at least 20 business days after the commencement of the Exchange Offer
in accordance with Rule 14e-1(a) under the Exchange Act. The Company expressly
reserves the right, at any time or from time to time, to extend the period of
time during which the Exchange Offer is open, and thereby delay acceptance for
exchange of any Old Notes, by giving oral or written notice to the Exchange
Agent and by giving written notice of such extension to the holders thereof or
by timely public announcement no later than 9:00 a.m. New York City time, on the
next business day after the previously scheduled Expiration Date. During any
such extension, all Old Notes previously tendered will remain subject to the
Exchange Offer unless properly withdrawn.
    
 
    The Company expressly reserves the right to (i) terminate or amend the
Exchange Offer and not to accept for exchange any Old Notes not theretofore
accepted for exchange upon the occurrence of any of the events specified below
under "Certain Conditions to the Exchange Offer" which have not been waived by
the Company and (ii) amend the terms of the Exchange Offer in any manner which,
in its good faith judgment, is advantageous to the Holders of the Old Notes,
whether before or after any tender of the Notes. If any such termination or
amendment occurs, the Company will notify the Exchange Agent and will either
issue a press release or give oral or written notice to the holders of the Old
Notes as promptly as practicable.
 
   
    For purposes of the Exchange Offer, a "business day" means any day other
than Saturday, Sunday or a date on which banking institutions are required or
authorized by New York State law to be closed, and consists of the time period
from 12:01 a.m. through 12:00 midnight, New York City time. Unless the Company
terminates the Exchange Offer prior to 12:00 midnight, New York City time, on
the Expiration Date, the Company will exchange the Exchange Notes for the Old
Notes on the Exchange Date.
    
 
PROCEDURES FOR TENDERING OLD NOTES
 
    The tender to the Company of Old Notes by a holder thereof as set forth
below and the acceptance thereof by the Company will constitute a binding
agreement between the tendering holder and the Company upon the terms and
subject to the conditions set forth in this Prospectus and in the accompanying
Letter of Transmittal.
 
    A holder of Old Notes may tender the same by (i) properly completing and
signing the Letter of Transmittal or a facsimile thereof (all references in this
Prospectus to the Letter of Transmittal shall be deemed to include a facsimile
thereof) and delivering the same, together with the certificate or certificates
representing the Old Notes being tendered and any required signature guarantees
and any other document required by the Letter of Transmittal, to the Exchange
Agent at its address set forth below on or prior to the Expiration Date (or
complying with the procedure for book-entry transfer described below) or (ii)
complying with the guaranteed delivery procedures described below.
 
    THE METHOD OF DELIVERY OF OLD NOTES, LETTERS OF TRANSMITTAL AND ALL OTHER
REQUIRED DOCUMENTS IS AT THE ELECTION AND RISK OF THE HOLDERS. IF SUCH DELIVERY
IS BY MAIL, IT IS RECOMMENDED THAT REGISTERED MAIL PROPERLY INSURED, WITH RETURN
RECEIPT REQUESTED, BE USED. IN ALL CASES, SUFFICIENT
 
                                       28
<PAGE>
TIME SHOULD BE ALLOWED TO INSURE TIMELY DELIVERY. NO OLD NOTES OR LETTERS OF
TRANSMITTAL SHOULD BE SENT TO THE COMPANY.
 
    If tendered Old Notes are registered in the name of the signer of the Letter
of Transmittal and the Exchange Notes to be issued in exchange therefor are to
be issued (and any untendered Old Notes are to be reissued) in the name of the
registered holder (which term, for the purposes described herein, shall include
any participant in The Depository Trust Company (also referred to as a
"book-entry transfer facility") whose name appears on a security listing as the
owner of Old Notes), the signature of such signer need not be guaranteed. In any
other case, the tendered Old Notes must be endorsed or accompanied by written
instruments of transfer in form satisfactory to the Company and duly executed by
the registered holder, and the signature on the endorsement or instrument of
transfer must be guaranteed by a commercial bank or trust company located or
having an office, branch, agency or correspondent in the United States, or by a
member firm of a registered national securities exchange or of the National
Association of Securities Dealers, Inc. (any of the foregoing hereinafter
referred to as an ("Eligible Institution"). If the Exchange Notes and/or Old
Notes not exchanged are to be delivered to an address other than that of the the
registered holder appearing on the note register of the Old Notes, the signature
in the Letter of Transmittal must be guaranteed by an Eligible Institution.
 
    The Exchange Agent will make a request within two business days after the
date of receipt of this Prospectus to establish accounts with respect to the Old
Notes at the book-entry transfer facility for the purpose of facilitating the
Exchange Offer, and subject to the establishment thereof, any financial
institution that is a participant in the book-entry transfer facility's system
may make book-entry delivery of Old Notes by causing such book-entry transfer
facility to transfer such Old Notes into the Exchange Agent's account with
respect to the Old Notes in accordance with the book-entry transfer facility's
procedures for such transfer. Although delivery of Old Notes may be effected
through book-entry transfer into the Exchange Agent's account at the book-entry
transfer facility, an appropriate Letter of Transmittal with any required
signature guarantee an all other required documents must in each case be
transmitted to and received or confirmed by the Exchange Agent at its address
set forth below on or prior to the Expiration Date, or, if the guaranteed
delivery procedures described below are complied with, within the time period
provided under such procedures.
 
    If a holder desires to accept the Exchange Offer and time will not permit a
Letter of Transmittal or Old Notes to reach the Exchange Agent before the
Expiration Date or the procedure for book-entry transfer cannot be completed on
a timely basis, a tender may be effected if the Exchange Agent has received at
its address set forth below on or prior to the Expiration Date, a letter,
telegram or facsimile transmission (receipt confirmed by telephone and an
original delivered by guaranteed overnight courier) from an Eligible Institution
setting forth the name and address of the tendering holder, the names in which
the Old Notes are registered and, if possible, the certificate numbers of the
Old Notes to be tendered, and stating that the tender is being made thereby and
guaranteeing that within three business days after the Expiration Date, the Old
Notes in proper form for transfer (or a confirmation of book-entry transfer of
such Old Notes into the Exchange Agent's account at the book-entry transfer
facility), will be delivered by such Eligible Institution together with a
properly completed and duly executed Letter of Transmittal (and any other
required documents). Unless Old Notes being tendered by the above-described
method are deposited with the Exchange Agent within the time period set forth
above (accompanied or preceded by a properly completed Letter of Transmittal and
any other required documents), the Company may, at its option, reject the
tender. Copies of the notice of guaranteed delivery ("Notice of Guaranteed
Delivery") which may be used by Eligible Institutions for the purposes described
in this paragraph are available from the Exchange Agent.
 
    A tender will be deemed to have been received as of the date when (i) the
tendering holder's properly completed and duly signed Letter of Transmittal
accompanied by the Old Notes (or a confirmation of book-entry transfer of such
Old Notes into the Exchange Agent's account at the book-entry transfer facility)
is received by the Exchange Agent, or (ii) a Notice of Guaranteed Delivery or
letter,
 
                                       29
<PAGE>
telegram or facsimile transmission to similar effect (as provided above) from an
Eligible Institution is received by the Exchange Agent. Issuances of Exchange
Notes in exchange for Old Notes tendered pursuant to a Notice of Guaranteed
Delivery or letter, telegram or facsimile transmission to similar effect (as
provided above) by an Eligible Institution will be made only against deposit of
the Letter of Transmittal (and any other required documents) and the tendered
Old Notes.
 
    All questions as to the validity, form, eligibility (including time of
receipt) and acceptance of Old Notes tendered for exchange will be determined by
the Company in its sole discretion, which determination shall be final and
binding. The Company reserves the absolute right to reject any and all tenders
of any particular Old Notes not properly tendered or not to accept any
particular Old Notes which acceptance might, in the judgment of the Company or
its counsel, be unlawful. The Company also reserves the absolute right to waive
any defects or irregularities or conditions of the Exchange Offer as to any
particular Old Notes either before or after the Expiration Date (including the
right to waive the ineligibility of any holder who seeks to tender Old Notes in
the Exchange Offer). The interpretation of the terms and conditions of the
Exchange Offer (including the Letter of Transmittal and the instructions
thereto) by the Company shall be final and binding on all parties. Unless
waived, any defects or irregularities in connection with a tender of Old Notes
for exchange must be cured within such reasonable period of time as the Company
shall determine. Neither the Company, the Exchange Agent nor any other person
shall be under any duty to give notification of any defect or irregularity with
respect to any tender of Old Notes for exchange, nor shall any of them incur any
liability for failure to give such notification.
 
    If the Letter of Transmittal is signed by a person or persons other than the
registered holder or holders of Old Notes, such Old Notes must be endorsed or
accompanied by appropriate powers of attorney, in either case signed exactly as
the name or names of the registered holder or holders appear on the Old Notes.
 
    If the Letter of Transmittal or any Old Notes or powers of attorney are
signed by trustees, executors, administrators, guardians, attorneys-in-fact,
officers of corporations or others acting in a fiduciary or representative
capacity, such persons should so indicate when signing, and, unless waived by
the Company, proper evidence satisfactory to the Company of their authority to
so act must be submitted.
 
    By tendering, each holder will represent to the Company that, among other
things, the Exchange Notes acquired pursuant to the Exchange Offer are being
acquired in the ordinary course of business of the person receiving such
Exchange Notes, whether or not such person is the holder, that neither the
holder nor any such other person has an arrangement or understanding with any
person to participate in the distribution of such Exchange Notes and that
neither the holder nor any such other person is an "affiliate," as defined under
Rule 405 of the Securities Act, of the Company, or if it is an affiliate it will
comply with the registration and prospectus requirements of the Securities Act
to the extent applicable.
 
    Each broker-dealer that receives Exchange Notes for its own account in
exchange for Old Notes where such Old Notes were acquired by such broker-dealer
as a result of market-making activities or other trading activities must
acknowledge that it will deliver a prospectus in connection with any resale of
such Exchange Notes. See "Plan of Distribution."
 
TERMS AND CONDITIONS OF THE LETTER OF TRANSMITTAL
 
    The Letter of Transmittal contains, among other things, the following terms
and conditions, which are part of the Exchange Offer.
 
    The party tendering Old Notes for exchange (the "Transferor") exchanges,
assigns and transfers the Old Notes to the Company and irrevocably constitutes
and appoints the Exchange Agent as the Transferor's agent and attorney-in-fact
to cause the Old Notes to be assigned, transferred and exchanged. The Transferor
represents and warrants that it has full power and authority to tender,
exchange, assign and transfer the Old Notes and to acquire Exchange Notes
issuable upon the
 
                                       30
<PAGE>
exchange of such tendered Old Notes, and that, when the same are accepted for
exchange, the Company will acquire good and unencumbered title to the tendered
Old Notes, free and clear of all liens, restrictions, charges and encumbrances
and not subject to any adverse claim. The Transferor also warrants that it will,
upon request, execute and deliver any additional documents deemed by the
Exchange Agent or the Company to be necessary or desirable to complete the
exchange, assignment and transfer of tendered Old Notes or transfer ownership of
such Old Notes on the account books maintained by a book-entry transfer
facility. The Transferor further agrees that acceptance of any tendered Old
Notes by the Company and the issuance of Exchange Notes in exchange therefor
shall constitute performance in full by the Company of certain of its
obligations under the Registration Rights Agreement. All authority conferred by
the Transferor will survive the death or incapacity of the Transferor and every
obligation of the Transferor shall be binding upon the heirs, legal
representatives, successors, assigns, executors and administrators of such
Transferor.
 
    The Transferor certifies that it is not an "affiliate" of the Company within
the meaning of Rule 405 under the Securities Act and that it is acquiring the
Exchange Notes offered hereby in the ordinary course of such Transferor's
business and that such Transferor has no arrangement with any person to
participate in the distribution of such Exchange Notes. Each holder, other than
a broker-dealer, must acknowledge that it is not engaged in, and does not intend
to engage in, a distribution of Exchange Notes. Each Transferor which is a
broker-dealer receiving Exchange Notes for its own account must acknowledge that
it will deliver a prospectus in connection with any resale of such Exchange
Notes. By so acknowledging and by delivering a prospectus, a broker-dealer will
not be deemed to admit that it is an "underwriter" within the meaning of the
Securities Act. This Prospectus, as it may be amended or supplemented from time
to time, may be used by a broker-dealer in connection with resales of Exchange
Notes received in exchange for Old Notes where such Old Notes were acquired by
such broker-dealer as a result of market-making activities or other trading
activities. The Company will, for a period no greater than 180 days after
consummation of the Exchange Offer, make available this Prospectus available to
any broker-dealer for use in connection with any such resale.
 
WITHDRAWAL RIGHTS
 
    Tenders of Old Notes may be withdrawn at any time prior to the Expiration
Date.
 
    For a withdrawal to be effective, a written notice of withdrawal sent by
telegram, facsimile transmission (receipt confirmed by telephone) or letter must
be received by the Exchange Agent at the address set forth herein prior to the
Expiration Date. Any such notice of withdrawal must (i) specify the name of the
person having tendered the Old Notes to be withdrawn (the "Depositor"), (ii)
identify the Old Notes to be withdrawn (including the certificate number or
numbers and principal amount of such Old Notes), (iii) specify the principal
amount of Old Notes to be withdrawn, (iv) include a statement that such holder
is withdrawing his election to have such Old Notes exchanged, (v) be signed by
the holder in the same manner as the original signature on the Letter of
Transmittal by which such Old Notes were tendered or as otherwise described
above (including any required signature guarantees) or be accompanied by
documents of transfer sufficient to have the Trustee under the Indenture
register the transfer of such Old Notes into the name of the person withdrawing
the tender and (vi) specify the name in which any such Old Notes are to be
registered, if different from that of the Depositor. The Exchange Agent will
return the properly withdrawn Old Notes promptly following receipt of notice of
withdrawal. If Old Notes have been tendered pursuant to the procedure for
book-entry transfer, any notice of withdrawal must specify the name and number
of the account at the book-entry transfer facility to be credited with the
withdrawn Old Notes or otherwise comply with the book-entry transfer facility
procedure. All questions as to the validity of notices of withdrawals, including
time of receipt, will be determined by the Company and such determination will
be final and binding on all parties.
 
    Any Old Notes so withdrawn will be deemed not to have been validly tendered
for exchange for purposes of the Exchange Offer. Any Old Notes which have been
tendered for exchange but which are
 
                                       31
<PAGE>
not exchanged for any reason will be returned to the holder thereof without cost
to such holder (or, in the case of Old Notes tendered by book-entry transfer
into the Exchange Agent's account at the book-entry transfer facility pursuant
to the book-entry transfer procedures described above, such Old Notes will be
credited to an account with such book-entry transfer facility specified by the
holder) as soon as practicable after withdrawal, rejection of tender or
termination of the Exchange Offer. Properly withdrawn Old Notes may be
retendered by following one of the procedures described under "--Procedures for
Tendering Old Notes" above at any time on or prior to the Expiration Date.
 
ACCEPTANCE OF OLD NOTES FOR EXCHANGE; DELIVERY OF EXCHANGE NOTES
 
    One business day following the Expiration Date, assuming satisfaction or
waiver of all of the conditions to the Exchange Offer, the Company will accept
all Old Notes properly tendered and will issue the Exchange Notes. See
"--Certain Conditions to the Exchange Offer" below. For purposes of the Exchange
Offer, the Company shall be deemed to have accepted properly tendered Old Notes
for exchange when, as and if the Company has given oral or written notice
thereof to the Exchange Agent.
 
    For each Old Note accepted for exchange, the holder of such Old Note will
receive an Exchange Note having a principal amount equal to that of the
surrendered Old Note.
 
    In all cases, issuance of Exchange Notes for Old Notes that are accepted for
exchange pursuant to the Exchange Offer will be made only after timely receipt
by the Exchange Agent of certificates for such Old Notes or a timely book-entry
confirmation of such Old Notes into the Exchange Agent's account at the
book-entry transfer facility, a properly completed and duly executed Letter of
Transmittal and all other required documents. If any tendered Old Notes are not
accepted for any reason set forth in the terms and conditions of the Exchange
Offer or if Old Notes are submitted for a greater principal amount than the
holder desires to exchange, such unaccepted or non-exchanged Old Notes will be
returned without expense to the tendering holder thereof (or, in the case of Old
Notes tendered by book-entry transfer into the Exchange Agent's account at the
book-entry transfer facility pursuant to the book-entry transfer procedures
described above, such non-exchanged Old Notes will be credited to an account
maintained with such book-entry transfer facility) as promptly as practicable
after the expiration of the Exchange Offer.
 
CERTAIN CONDITIONS TO THE EXCHANGE OFFER
 
    Notwithstanding any other provision of the Exchange Offer, or any extension
of the Exchange Offer, the Company shall not be required to accept for exchange,
or to issue Exchange Notes in exchange for, any Old Notes and may terminate or
amend the Exchange Offer (by oral or written notice to the Exchange Agent or by
a timely press release) if at any time before the acceptance of such Old Notes
for exchange or the exchange of the Exchange Notes for such Old Notes, any of
the following conditions exist:
 
    (a) any action or proceeding is instituted or threatened in any court or by
       or before any governmental agency or regulatory authority or any
       injunction, order or decree is issued with respect to the Exchange Offer
       which, in the sole judgment of the Company, might materially impair the
       ability of the Company to proceed with the Exchange Offer or have a
       material adverse effect on the contemplated benefits of the Exchange
       Offer to the Company; or
 
    (b) any change (or any development involving a prospective change) shall
       have occurred or be threatened in the business, properties, assets,
       liabilities, financial condition, operations, results of operations or
       prospects of the Company that is or may be adverse to the Company, or the
       Company shall have become aware of facts that have or may have adverse
       significance with respect to the value of the Old Notes or the Exchange
       Notes or that may materially impair the contemplated benefits of the
       Exchange Offer to the Company;
 
                                       32
<PAGE>
    (c) any law, rule or regulation or applicable interpretations of the staff
       of the Commission is issued or promulgated which, in the good faith
       determination of the Company, do not permit the Company to effect the
       Exchange Offer; or
 
    (d) any governmental approval has not been obtained, which approval the
       Company, in its sole discretion, deems necessary for the consummation of
       the Exchange Offer; or
 
    (e) there shall have been proposed, adopted or enacted any law, statute,
       rule or regulation (or an amendment to any existing law, statute, rule or
       regulation) which, in the sole judgment of the Company, might materially
       impair the ability of the Company to proceed with the Exchange Offer or
       have a material adverse effect on the contemplated benefits of the
       Exchange Offer to the Company; or
 
    (f)  there shall occur a change in the current interpretation by the staff
       of the Commission which permits the Exchange Notes issued pursuant to the
       Exchange Offer in exchange for Old Notes to be offered for resale, resold
       and otherwise transferred by holders thereof (other than any such holder
       that is an "affiliate" of the Company within the meaning of Rule 405
       under the Securities Act) without compliance with the registration and
       prospectus delivery provisions of the Securities Act provided that such
       Exchange Notes are acquired in the ordinary course of such holders'
       business and such holders have no arrangement with any person to
       participate in the distribution of such Exchange Notes; or
 
    (g) there shall have occurred (i) any general suspension of, shortening of
       hours for, or limitation on prices for, trading in securities on any
       national securities exchange or in the over-the-counter market (whether
       or not mandatory), (ii) any limitation by any governmental agency or
       authority which may adversely affect the ability of the Company to
       complete the transactions contemplated by the Exchange Offer, (iii) a
       declaration of a banking moratorium or any suspension of payments in
       respect of banks by Federal or state authorities in the United States
       (whether or not mandatory), (iv) a commencement of a war, armed
       hostilities or other international or national crisis directly or
       indirectly involving the United States, (v) any limitation (whether or
       not mandatory) by any governmental authority on, or other event having a
       reasonable likelihood of affecting, the extension of credit by banks or
       other leading institutions in the United States, or (vi) in the case of
       any of the foregoing existing at the time of the commencement of the
       Exchange Offer, a material acceleration or worsening thereof.
 
    The Company expressly reserves the right to terminate the Exchange Offer and
not accept for exchange any Old Notes upon the occurrence of any of the
foregoing conditions (which represent all of the material conditions to the
acceptance by the Company of properly tendered Old Notes). In addition, the
Company may amend the Exchange Offer at any time prior to the Expiration Date if
any of the conditions set forth above occurs. Moreover, regardless of whether
any of such conditions has occurred, the Company may amend the Exchange Offer in
any manner which, in its good faith judgment, is advantageous to holders of the
Old Notes.
 
    The foregoing conditions are for the sole benefit of the Company and may be
asserted by the Company regardless of the circumstances giving rise to any such
condition or may be waived by the Company in whole or in part at any time and
from time to time in its sole discretion. The failure by the Company at any time
to exercise any of the foregoing rights shall not be deemed a waiver of any such
right and each such right shall be deemed an ongoing right which may be asserted
at any time and from time to time. If the Company waives or amends the foregoing
conditions, it will, if required by law, extend the Exchange Offer for a minimum
of five business days from the date that the Company first gives notice, by
public announcement or otherwise, of such waiver or amendment, if the Exchange
Offer would otherwise expire within such five business day period. Any
determination by the Company concerning the events described above will be final
and binding upon all parties.
 
                                       33
<PAGE>
    In addition, the Company will not accept for exchange any Old Notes
tendered, and no Exchange Notes will be issued in exchange for any such Old
Notes, if at such time any stop order shall be threatened or in effect with
respect to the Registration Statement of which this Prospectus constitutes a
part or the qualification of the Indenture under the Trust Indenture Act of
1939, as amended. In any such event the Company is required to use every
reasonable effort to obtain the withdrawal of any stop order at the earliest
possible time.
 
    The Exchange Offer is not conditioned upon any minimum principal amount of
Old Notes being tendered for exchange.
 
EXCHANGE AGENT
 
    State Street Bank and Trust Company has been appointed as the Exchange Agent
for the Exchange Offer. All executed Letters of Transmittal should be directed
to the Exchange Agent at one of the addresses set forth below:
 
<TABLE>
<CAPTION>
<S>                                                                              <C>        
                                                                                             BY MAIL:
                   BY HAND/OVERNIGHT COURIER:                                   (INSURED OR REGISTERED RECOMMENDED)
               State Street Bank and Trust Company                              State Street Bank and Trust Company
                     Two International Place                                          Two International Place
                          Fourth Floor                                                     Fourth Floor
                      Boston, Massachusetts                                            Boston, Massachusetts
              Attention: Corporate Trust Operations                            Attention: Corporate Trust Operations
                          Nancy Bowker                                                     Nancy Bowker
</TABLE>
 
                                 BY FACSIMILE:
                                 (617) 664-5371
                        (For Eligible Institutions Only)
 
Questions and requests for assistance, requests for additional copies of this
Prospectus or of the Letter of Transmittal and requests for Notices of
Guaranteed Delivery should be directed to the Exchange Agent at the address and
telephone number set forth in the Letter of Transmittal.
 
    DELIVERY TO AN ADDRESS OTHER THAN AS SET FORTH ON THE LETTER OF TRANSMITTAL,
OR TRANSMISSIONS OF INSTRUCTIONS VIA A FACSIMILE OTHER THAN THE ONES SET FORTH
ON THE LETTER OF TRANSMITTAL, WILL NOT CONSTITUTE A VALID DELIVERY.
 
SOLICITATION OF TENDERS; FEES AND EXPENSES
 
    The Company has not retained any dealer-manager in connection with the
Exchange Offer and will not make any payments to brokers, dealers or others
soliciting acceptances of the Exchange Offer. The Company, however, will pay the
Exchange Agent reasonable and customary fees for its services and will reimburse
it for its reasonable out-of-pocket expenses in connection therewith. The
Company will also pay brokerage houses and other custodians, nominees and
fiduciaries the reasonable out-of-pocket expenses incurred by them in forwarding
copies of this and other related documents to the beneficial owners of the Old
Notes and in handling or forwarding tenders for their customers.
 
   
    The estimated cash expenses to be incurred in connection with the Exchange
Offer will be paid by the Company and are estimated in the aggregate to be
approximately $25,000, which includes fees and expenses of the Exchange Agent,
Trustee, registration fees, accounting, legal, printing and related fees and
expenses.
    
 
    No person has been authorized to give any information or to make any
representations in connection with the Exchange Offer other than those contained
in this Prospectus. If given or made, such information or representations should
not be relied upon as having been authorized by the Company.
 
                                       34
<PAGE>
Neither the delivery of this Prospectus nor any exchange made hereunder shall,
under any circumstances, create any implication that there has been no change in
the affairs of the Company since the respective dates as of which information is
given herein. The Exchange Offer is not being made to (nor will tenders be
accepted from or on behalf of) holders of Old Notes in any jurisdiction in which
the making of the Exchange Offer or the acceptance thereof would not be in
compliance with the laws of such jurisdiction. However, the Company may, at its
discretion, take such action as it may deem necessary to make the Exchange Offer
in any such jurisdiction and extend the Exchange Offer to holders of Old Notes
in such jurisdiction. In any jurisdiction in which the securities laws or blue
sky laws of which require the Exchange Offer to be made by a licensed broker or
dealer, the Exchange Offer is being made on behalf of the Company by one or more
registered brokers or dealers which are licensed under the laws of such
jurisdiction.
 
TRANSFER TAXES
 
    The Company will pay all transfer taxes, if any, applicable to the exchange
of Old Notes pursuant to the Exchange Offer. If, however, certificates
representing Exchange Notes or Old Notes for principal amounts not tendered or
accepted for exchange are to be delivered to, or are to be issued in the name
of, any person other than the registered holder of the Old Notes tendered, or if
tendered Old Notes are registered in the name of any person other than the
person signing the Letter of Transmittal, or if a transfer tax is imposed for
any reason other than the exchange of Old Notes pursuant to the Exchange Offer,
then the amount of any such transfer taxes (whether imposed on the registered
holder or any other persons) will be payable by the tendering holder. If
satisfactory evidence of payment of such taxes or exemption therefrom is not
submitted with the Letter of Transmittal, the amount of such transfer taxes will
be billed directly to such tendering holder.
 
ACCOUNTING TREATMENT
 
    The Exchange Notes will be recorded at the carrying value of the Old Notes
as reflected in the Company's accounting records on the date of the exchange.
Accordingly, no gain or loss for accounting purposes will be recognized by the
Company upon the exchange of Exchange Notes for Old Notes. Expenses incurred in
connection with the issuance of the Exchange Notes will be amortized over the
term of the Exchange Notes.
 
CONSEQUENCES OF FAILURE TO EXCHANGE
 
    Holders of Old Notes who do not exchange their Old Notes for Exchange Notes
pursuant to the Exchange Offer will continue to be subject to the restrictions
on transfer of such Old Notes as set forth in the legend thereon. Old Notes not
exchanged pursuant to the Exchange Offer will continue to remain outstanding in
accordance with their terms. In general, the Old Notes may not be offered or
sold unless registered under the Securities Act, except pursuant to an exemption
from, or in a transaction not subject to, the Securities Act and applicable
state securities laws. The Company does not currently anticipate that it will
register the Old Notes under the Securities Act.
 
    Participation in the Exchange Offer is voluntary, and holders of Old Notes
should carefully consider whether to participate. Holders of the Old Notes are
urged to consult their financial and tax advisors in making their own decision
on what action to take.
 
    As a result of the making of, and upon acceptance for exchange of all
validly tendered Old Notes pursuant to the terms of, this Exchange Offer, the
Company will have fulfilled a covenant contained in the Registration Rights
Agreement. Holders of Old Notes who do not tender their Old Notes in the
Exchange Offer will continue to hold such Old Notes and will be entitled to all
the rights and limitations applicable thereto under the Indenture, except for
any such rights under the Registration Rights Agreement that by their terms
terminate or cease to have further effectiveness as a result of the making of
this Exchange
 
                                       35
<PAGE>
Offer. All untendered Old Notes will continue to be subject to the restrictions
on transfer set forth in the Indenture. To the extent that Old Notes are
tendered and accepted in the Exchange Offer, the trading market for untendered
Old Notes could be adversely affected.
 
    The Company may in the future seek to acquire, subject to the terms of the
Indenture, untendered Old Notes in open market or privately negotiated
transactions, through subsequent exchange offers or otherwise. The Company has
no present plan to acquire any Old Notes which are not tendered in the Exchange
Offer.
 
RESALE OF EXCHANGE NOTES
 
    The Company is making the Exchange Offer in reliance on the position of the
Staff of the Commission as set forth in certain interpretive letters addressed
to third parties in other transactions. However, the Company has not sought its
own interpretive letter and there can be no assurance that the Staff would make
a similar determination with respect to the Exchange Offer as it has in such
interpretive letters to third parties. Based on these interpretations by the
Staff, the Company believes that the Exchange Notes issued pursuant to the
Exchange Offer in exchange for Old Notes may be offered for resale, resold and
otherwise transferred by a Holder (other than any Holder who is a broker-dealer
or an "affiliate" of the Company within the meaning of Rule 405 of the
Securities Act) without further compliance with the registration and prospectus
delivery requirements of the Securities Act, provided that such Exchange Notes
are acquired in the ordinary course of such Holder's business and that such
Holder is not participating, and has no arrangement or understanding with any
person to participate, in a distribution (within the meaning of the Securities
Act) of such Exchange Notes. However, any holder who is an "affiliate" of the
Company or who has an arrangement or understanding with respect to the
distribution of the Exchange Notes to be acquired pursuant to the Exchange
Offer, or any broker-dealer who purchased Old Notes from the Company to resell
pursuant to Rule 144A or any other available exemption under the Securities Act
(i) could not rely on the applicable interpretations of the Staff and (ii) must
comply with the registration and prospectus delivery requirements of the
Securities Act. A broker-dealer who holds Old Notes that were acquired for its
own account as a result of market-making or other trading activities may be
deemed to be an "underwriter" within the meaning of the Securities Act and must,
therefore, deliver a prospectus meeting the requirements of the Securities Act
in connection with any resale of Exchange Notes. Each such broker-dealer that
receives Exchange Notes for its own account in exchange for Old Notes, where
such Old Notes were acquired by such broker-dealer as a result of market-making
activities or other trading activities, must acknowledge in the Letter of
Transmittal that it will deliver a prospectus in connection with any resale of
such Exchange Notes. See "Plan of Distribution."
 
    In addition, to comply with the securities laws of certain jurisdictions, if
applicable, the Exchange Notes may not be offered or sold unless they have been
registered or qualified for sale in such jurisdiction or an exemption from
registration or qualification is available and is complied with. The Company has
agreed, pursuant to the Registration Rights Agreement and subject to certain
specified limitations therein, to register or qualify the Exchange Notes for
offer or sale under the securities or blue sky laws of such jurisdictions as any
holder of the Exchange Notes reasonably requests in writing; PROVIDED, HOWEVER,
that the Company shall not be required to register or qualify to transact
business where it is not now so qualified or to take action that would subject
it to the service of process in suits or to taxation, other than as to matters
and transactions relating to the Prospectus, in any jurisdiction where it is not
now so subject. Such registration or qualification may require the imposition of
restrictions or conditions (including suitability requirements for offerees or
purchasers) in connection with the offer or sale of any Exchange Notes.
 
                                       36
<PAGE>
                       DESCRIPTION OF THE EXCHANGE NOTES
 
    The Old Notes were issued and the Exchange Notes offered hereby will be
issued under an Indenture dated as of December 24, 1996 (the "Indenture")
between the Company and State Street Bank and Trust Company. The terms of the
Exchange Notes include those stated in the Indenture and those made part of the
Indenture by reference to the Trust Indenture Act of 1939, as amended (the
"Trust Indenture Act"). The Exchange Notes are subject to all such terms, and
holders of the Exchange Notes are referred to the Indenture and the Trust
Indenture Act for a statement thereof. The following summary of certain
provisions of the Indenture describes the material terms of the Indenture but
does not purport to be complete and is qualified in its entirety by reference to
the Indenture, including the definitions therein of certain terms used below.
The definitions of certain terms used in the following summary are set forth
below under "Certain Definitions." The Indenture is an exhibit to the
Registration Statement of which this Prospectus is a part.
 
    On December 24, 1996, the Company issued $500,000,000 aggregate principal
amount of Old Notes under the Indenture. The terms of the Exchange Notes are
identical in all material respects to the Old Notes, except for certain transfer
restrictions and registration and other rights relating to the exchange of the
Old Notes for Exchange Notes. The Trustee will authenticate and deliver Exchange
Notes for original issue only in exchange for a like principal amount of Old
Notes. Any Old Notes that remain outstanding after the consummation of the
Exchange Offer, together with the Exchange Notes, will be treated as a single
class of securities under the Indenture. Accordingly, all references herein to
specified percentages in aggregate principal amount of the outstanding Exchange
Notes shall be deemed to mean, at any time after the Exchange Offer is
consummated, such percentage in aggregate principal amount of the Old Notes and
Exchange Notes then outstanding.
 
PRINCIPAL, MATURITY AND INTEREST
 
    The Notes will be unsecured obligations of the Company and will rank on a
parity with all other unsecured and unsubordinated debt of the Company and will
be limited in aggregate principal amount to $500 million and will mature on
December 15, 2026. Interest on the Notes will accrue at the rate of 7.45% per
annum. Interest on the Old Notes has accrued from the original date of issuance
thereof, December 24, 1996, and will cease to accrue on the date the Exchange
Notes are exchanged for the Old Notes. Interest on the Exchange Notes will
accrue from the date the Exchange Notes are exchanged for Old Notes and is
payable in cash semi-annually in arrears on June 15 and December 15 of each
year, commencing June 15, 1997. Interest will be computed on the basis of a
360-day year comprised of twelve 30-day months. Principal, interest, premium and
Liquidated Damages, if any, on the Notes will be payable at the office or agency
of the Company maintained for such purpose within the City and State of New York
or, at the option of the Company, payment of interest and Liquidated Damages, if
any, may be made by check mailed to the Holders of the Notes at their respective
addresses set forth in the register of Holders of Notes; PROVIDED that all
payments with respect to Global Notes and definitive notes the Holders of which
have given wire transfer instructions to the Company will be required to be made
by wire transfer of immediately available funds to the accounts specified by the
Holders thereof. Unless otherwise designated by the Company, the Company's
office or agency in New York will be the office of the Trustee maintained for
such purpose. Except as described below under "--Book-Entry, Delivery and Form,"
the Notes will be issued in denominations of $1,000 and integral multiples
thereof. No service charge will be made for any transfer or exchange of such
Notes, but the Company may require payment of a sum sufficient to cover any tax
or other governmental charge payable in connection therewith.
 
    The Company will not be required pursuant to the Indenture to repurchase the
Notes, in whole or in part, with the proceeds of any sale, transfer or other
disposition of any shares of capital stock of any Subsidiary. Furthermore, the
Indenture will not provide for any restrictions on the Company's use of any such
proceeds.
 
    The Indenture will not contain any provisions that would restrict the
Company from incurring, assuming or becoming liable with respect to any
indebtedness or other obligations or from paying
 
                                       37
<PAGE>
dividends or making other distributions on its capital stock or purchasing or
redeeming its capital stock. The Indenture will not contain any financial ratios
or specified levels of net worth or liquidity to which the Company must adhere.
In addition, the Indenture will not contain any provisions that would provide
protection to Holders of the Notes against a sudden and dramatic decline in
credit quality of the Company resulting from any takeover, recapitalization or
similar restructuring or from other highly leveraged transactions.
 
OPTIONAL REDEMPTION
 
    The Notes will be redeemable in whole or in part, at the option of the
Company at any time, at a redemption price equal to the greater of (i) 100% of
the principal amount of such Notes and (ii) the sum of the present values of the
remaining scheduled payments of principal and interest thereon discounted, on a
semiannual basis, at the Treasury Yield plus 15 basis points, together with
accrued interest, and Liquidated Damages, if any, to the date of redemption.
 
SETTLEMENT AND PAYMENT
 
    Settlement for the Notes and payments by the Company in respect of the Notes
(including principal, interest, premium and Liquidated Damages, if any) will be
made in immediately available funds. The Notes are expected to be eligible to
trade in the DTC's Same-Day Funds Settlement System, and any permitted secondary
market trading activity in the Notes will, therefore, be required by DTC to be
settled in immediately available funds. No assurance can be given as to the
effect, if any, of such settlement arrangements on trading activity in the
Notes.
 
    Because of time zone differences, the securities account of the Euroclear
System ("Euroclear") and Cedel, S.A. ("CEDEL") participants (each, a "Member
Organization") purchasing an interest in a Global Note from a Participant (as
defined herein) that is not a Member Organization will be credited during the
securities settlement processing day (which must be a business day for Euroclear
or CEDEL, as the case may be) immediately following the DTC settlement date.
Transactions in interests in a Global Note settled during any securities
settlement processing day will be reported to the relevant Member Organization
on the same day. DTC has advised the Company that cash received in Euroclear or
CEDEL as a result of sales of interests in a Global Note by or through a Member
Organization to a Participant that is not a Member Organization will be received
with value on the DTC settlement date, but will not be available in the relevant
Euroclear or CEDEL cash account until the business day for Euroclear and CEDEL
following settlement in DTC.
 
COVENANTS
 
    LIMITATION ON LIENS
 
    The Indenture will provide that the Company will not, and will not permit
any Principal Subsidiary to, create or suffer to exist any Lien to secure any
Indebtedness of the Company or upon any shares of equity interests or evidences
of Indebtedness issued by any Principal Subsidiary and owned by the Company or
any Principal Subsidiary (whether such shares or evidences of Indebtedness were
owned as of the date of the Indenture or thereafter issued or acquired), without
making, or causing such Principal Subsidiary to make, effective provision to
secure all of the Notes issued under the Indenture and then outstanding by such
Lien, equally and ratably with any and all other such Indebtedness thereby
secured, so long as such other Indebtedness is so secured, unless, after giving
effect thereto, the sum of the principal amount of Indebtedness secured by all
Liens incurred after the date of the Indenture does not exceed (other than the
Liens permitted by clause (i) through (xviii) in the following sentence
(collectively "Permitted Liens")) 10% of Consolidated Net Tangible Assets of the
Company. The foregoing restrictions shall not apply to Indebtedness secured by
Liens existing on the date of the Indenture or to: (i) Liens on property of a
corporation existing at the time such corporation is merged into or consolidated
with the Company or a Principal Subsidiary or at the time of a sale, lease or
other disposition of the properties of such corporation (or a division thereof)
as an entirety or substantially as
 
                                       38
<PAGE>
an entirety to the Company or a Principal Subsidiary, provided that no such Lien
as a result of such merger, consolidation, sale, lease or other disposition is
extended to other property owned by the Company or such Principal Subsidiary
immediately prior thereto; (ii) Liens on property or shares of equity interests
or evidences of indebtedness of a corporation existing at the time such
corporation becomes a Principal Subsidiary; (iii) Liens securing Indebtedness of
a Principal Subsidiary to the Company or to another Principal Subsidiary; (iv)
Liens on any property created, assumed or otherwise brought into existence in
contemplation of the sale or other disposition of the underlying property,
whether directly or indirectly, by way of share disposition or otherwise,
provided that the Company must have disposed of such property within 180 days
after the creation of such Liens and that any Indebtedness secured by such Liens
shall be without recourse to the Company or any Subsidiary; (v) Liens in favor
of the United States of America or any State thereof, or any department, agency
or instrumentality or political subdivision thereof, to secure partial,
progress, advance or other payments; (vi) Liens to secure Indebtedness of joint
ventures in which the Company or a Principal Subsidiary has an interest, to the
extent such Liens are on property or assets of, or equity interests in, such
joint ventures; (vii) Liens for taxes, fees, assessments or other governmental
charges that are not delinquent or remain payable without penalty provided that
no notice of lien has been filed or recorded under the Uniform Commercial Code;
(viii) carriers', warehousemen's, mechanics', landlords', materialmen's,
repairmen's or other similar Liens arising in the ordinary course of business
that are not delinquent or remain payable without penalty; (ix) Liens (other
than any Lien imposed by ERISA) consisting of pledges or deposits required in
the ordinary course of business in connection with (A) workers' compensation,
unemployment insurance and other social security legislation and (B) insurance
contracts, reinsurance contracts, retrocession agreements and other similar
agreements incurred in the ordinary course of business (including, but not
limited to, pledges or deposits made in connection with letters of credit issued
in connection therewith); (x) Liens consisting of judgment or judicial
attachment liens, provided that the enforcement of such Liens is effectively
stayed; (xi) easements, rights-of-way, restrictions and other similar
encumbrances incurred in the ordinary course of business that, in the aggregate,
are not substantial in amount, and that do not in any case materially detract
from the value of the property subject thereto or interfere with the ordinary
conduct of the businesses of the Company and its Principal Subsidiaries; (xii)
deposits made by any Principal Subsidiary, or other statutory Lien against the
assets of any Principal Subsidiary, in each case made or incurred in favor of
policyholders of such Principal Subsidiary in the ordinary course of business
pursuant to insurance regulatory requirements; (xiii) Liens arising solely by
virtue of any statutory or common law provision relating to banker's liens,
rights of setoff or similar rights and remedies, in each case as to deposit
accounts or other funds maintained with a creditor depository institution;
PROVIDED that (A) such deposit account is not a dedicated cash collateral
account and is not subject to restrictions against access by the Company in
excess of those set forth by regulations promulgated by the Federal Reserve
Board, and (B) such deposit account is not intended by the Company or any
Principal Subsidiary to provide collateral to the depository institution; (xiv)
Liens arising from Uniform Commercial Code financing statements regarding
leases; (xv) Liens or pledges or deposits of cash or securities made by any
Principal Subsidiary as a condition to obtaining or maintaining any licenses
issued to it by any applicable governmental authority; (xvi) Liens incurred in
connection with that certain Equipment Trust 1993-1 dated as of December 30,
1993 between American Re-Insurance and Continental Bank, N.A.; (xvii) Liens
incurred in the ordinary course of business on securities to secure repurchase
and reverse repurchase obligations in respect of such securities; (xviii) Liens
arising as a result of deposits made by the Company to defease the Subordinated
Debentures; and (xix) extension, renewal, replacement or refunding of any Lien
existing on the date of the Indenture or referred to in clauses (i) to (iii) or
clause (xvi), provided that the principal amount of Indebtedness secured thereby
and not otherwise authorized by clauses (i) to (iii) or clause (xvi) shall not
exceed the principal amount of Indebtedness, plus any premium or fee payable in
connection with any such extension, renewal, replacement or refunding, so
secured at the time of such extension, renewal, replacement or refunding.
 
                                       39
<PAGE>
RESTRICTIONS ON MERGER AND SALE OF ASSETS
 
    The Indenture will provide that the Company will not consolidate with or
merge with or into any other Person or sell, lease or otherwise transfer its
property and assets as, or substantially as, an entirety to any Person, and the
Company will not permit any Person to merge with or into or consolidate with the
Company unless (i) either (A) the Company will be the resulting or surviving
entity or (B) any successor or purchaser is a corporation, partnership, limited
liability company or trust organized under the laws of the United States of
America, any State or the District of Columbia, and any such successor or
purchaser expressly assumes the Company's obligations on the Notes under a
supplemental Indenture; (ii) immediately after giving effect to the transaction
no Event of Default, and no event which after notice or lapse of time or both
would become an Event of Default, shall have occurred and be continuing; (iii)
if, as a result of any such transaction, property or assets of the Company or
any Principal Subsidiary would become subject to a Lien which would not be
permitted by the limitation on Liens contained in the Indenture, the Company or,
if applicable, the successor to the Company, as the case may be, shall take such
steps as shall be necessary effectively to secure the Notes issued under the
Indenture equally and ratably with Indebtedness secured by such Lien; and (iv)
certain other conditions are met. Upon any consolidation or merger into any
other Person or any conveyance, transfer or lease of the Company's assets
substantially as an entirety to any Person, the successor Person shall succeed
to, and be substituted for, the Company under the Indenture, and the Company,
except in the case of a lease, shall be relieved of all obligations and
covenants under the Indenture and the Notes to the extent it was the predecessor
Person.
 
    Under the laws of the State of New York, which govern the Indenture, there
is no established meaning of the phrase "substantially as an entirety" with
regard to a company's assets or property, and the interpretation of such phrase
is very fact-intensive. As a result, it may be difficult for Holders of the
Notes to ascertain whether a viable claim exists under the Indenture with
respect to any given transaction.
 
EVENTS OF DEFAULT AND NOTICE THEREOF
 
    The Indenture will provide that each of the following constitutes an "Event
of Default": (a) failure to pay principal of (or premium, if any, on) any Note
when due; (b) failure to pay any interest or Liquidated Damages on any Note when
due, and such failure shall continue for a period of 30 days; (c) failure to
perform any other covenant or agreement of the Company under the Indenture,
continued for 90 days after written notice as provided in the Indenture; (d)
failure by the Company or any Principal Subsidiary to pay Indebtedness in an
aggregate principal amount exceeding $20,000,000 at the later of final maturity
or upon expiration of any applicable period of grace with respect to such
principal amount, and such failure to pay shall not have been cured by the
Company within 30 days after such failure, or (ii) acceleration of the maturity
of any Indebtedness of the Company or any Principal Subsidiary, having an
aggregate principal amount in excess of $20,000,000, if such Indebtedness is not
discharged, or such acceleration is not annulled, within 15 days after written
notice as provided in the Indenture; and (e) certain events of bankruptcy,
insolvency or reorganization.
 
    The Holders of a majority in aggregate principal amount of the outstanding
Notes shall have the right, subject to such provisions for indemnification of
the Trustee, to direct the time, method and place of conducting any proceeding
for any remedy available to the Trustee under the Indenture or exercising any
trust or power conferred on the Trustee with respect to the Notes.
 
    If an Event of Default (other than an Event of Default specified in clause
(e) of the second preceding paragraph) with respect to Notes at the time
outstanding shall occur and be continuing, either the Trustee or the Holders of
at least 25% in principal amount of the Notes may, by a notice in writing to the
Company (and to the Trustee if given by the Holders), declare the principal
amount of all of the Notes to be due and payable immediately; PROVIDED, however,
that under certain circumstances the Holders of a majority in aggregate
principal amount of Notes may rescind or annul such declaration and its
consequences. If an Event of Default specified in clause (e) of the second
preceding paragraph occurs, the
 
                                       40
<PAGE>
Notes then outstanding automatically will become immediately payable without any
declaration or other act on the part of the Trustee or any Holder. For
information as to waiver of defaults, see "--Modification and Waiver" herein.
 
    No Holder of a Note will have any right to institute any proceeding with
respect to the Indenture or for any remedy thereunder, unless such Holder shall
have previously given to the Trustee written notice of a continuing Event of
Default with respect to the Notes and the Holders of at least 25% in aggregate
principal amount of the outstanding Notes shall have made written request, and
offered reasonable indemnity to the Trustee, to institute such proceeding as
trustee, and the Trustee shall not have received from the Holders of a majority
in aggregate principal amount of the outstanding Notes a direction inconsistent
with such request and the Trustee shall have failed to institute such proceeding
within 60 days. However, such limitations do not apply to a suit instituted by a
Holder of any Note for enforcement of payment of the principal of (or premium or
Liquidated Damages, if any) or interest, if any, on such Note on or after the
respective due dates expressed in such Note.
 
    The Company will be required to furnish to the Trustee annually a statement
by certain officers of the Company as to whether the Company is in default in
the performance and observance of any of the terms, provisions and conditions of
the Indenture.
 
MODIFICATION AND WAIVER
 
    Modifications and amendments of the Indenture may be made by the Company and
the Trustee, with the consent of the Holders of not less than a majority of
principal amount of the outstanding Notes affected by the modification or
amendment (including consents obtained in connection with a purchase of, or
tender or exchange offer for, outstanding Notes); provided, however, that no
such modification or amendment may, without the consent of the Holder of each
such outstanding Note affected thereby: (a) change the Stated Maturity of the
principal of (or premium, if any) or any installment of principal or interest,
if any, on any such Note; (b) reduce the principal amount of (or premium, if
any) or the interest rate, if any, on any such Note; (c) reduce the amount of,
or postpone the date fixed for, the payment of any sinking fund or analogous
obligation; (d) waive a redemption payment with respect to any Note, (e) change
the place or currency of payment of principal of (or premium or Liquidated
Damages, if any) or the interest, if any, on any such Note; (f) impair the right
to institute suit for the enforcement of any such payment on or with respect to
any such Note on or after the Stated Maturity (or, in the case of redemption, on
or after the Redemption Date); (g) reduce the percentage of the principal amount
of outstanding Notes, the consent of the Holders of which is necessary to modify
or amend the Indenture; or (h) modify the foregoing requirements or reduce the
percentage of outstanding Notes necessary to waive compliance with certain
provisions of the Indenture or for waiver of certain defaults.
 
    The Holders of at least a majority of the aggregate principal amount of the
outstanding Notes may waive compliance by the Company with certain restrictive
provisions of the Indenture and waive any past default under the Indenture,
except a default in the payment of principal, premium, Liquidated Damages or
interest or in the performance of certain covenants.
 
    From time to time, the Company and the Trustee, without the consent of the
Holders, may amend the Indenture for certain specified purposes, including,
without limitation, (i) curing ambiguities, defects or inconsistencies and (ii)
other changes so long as any such change does not adversely affect the rights of
any of the Holders in any material respect.
 
    Except in certain limited circumstances, the Company will be entitled to set
any day as the record date for the purpose of determining the Holders of
outstanding Notes entitled to give or take any direction, notice, consent,
waiver or other action under the Indenture, in the manner and subject to the
limitations provided in the Indenture. In certain limited circumstances, the
Trustee will be entitled to set a record date for action by Holders. If a record
date is set for any action to be taken by Holders, such action may be taken only
by persons who are Holders of outstanding Notes on the record date. To be
effective, such action must be taken by Holders of the requisite principal
amount of such Notes within a specified period following the record date. For
any particular record date, this period will be 180 days or such
 
                                       41
<PAGE>
shorter period as may be specified by the Company (or the Trustee, if it set the
record date), and may be shortened or lengthened (but not beyond 180 days) from
time to time.
 
LEGAL DEFEASANCE AND COVENANT DEFEASANCE
 
    The Company may, at its option and at any time, elect to have the
obligations of the Company discharged with respect to the outstanding Notes
("defeasance"). Such defeasance means that the Company shall be deemed to have
paid and discharged the entire indebtedness represented by the outstanding
Notes, except for (i) the rights of Holders of outstanding Notes to receive
payments in respect of the principal of, premium and Liquidated Damages, if any,
and interest on such Notes when such payments are due, or on the redemption
date, as the case may be, (ii) the Company's obligations with respect to the
Notes concerning issuing temporary Notes, registration of Notes, mutilated,
destroyed, lost or stolen Notes and the maintenance of an office or agency for
payment and money for security payments held in trust, (iii) the rights, powers,
trusts, duties and immunities of the Trustee, and (iv) the defeasance provisions
of the Indenture. In addition, the Company may, at its option and at any time,
elect to have the obligations of the Company released with respect to certain
covenants that are described in the Indenture ("covenant defeasance") and
thereafter any omission to comply with such obligations shall not constitute a
Default or an Event of Default with respect to the Notes. In the event covenant
defeasance occurs, certain events (not including non-payment, bankruptcy and
insolvency events) described under "Events of Default" will no longer constitute
an Event of Default with respect to the Notes.
 
    In order to exercise either defeasance or covenant defeasance, (i) the
Company must irrevocably deposit with the Trustee, in trust, for the benefit of
the Holders of the Notes, cash in U.S. dollars, U.S. Government Obligations, or
a combination thereof, in such amounts as will be sufficient, in the opinion of
a nationally recognized firm of independent public accountants, to pay the
principal of, premium and Liquidated Damages, if any, and interest on the
outstanding Notes on the Stated Maturity or on the applicable optional
redemption date, as the case may be, of such principal or installment of
principal or interest and any mandatory redemption or analogous payments
applicable to the outstanding Notes, (ii) in the case of defeasance, the Company
shall have delivered to the Trustee an Opinion of Counsel in the United States
stating that (A) the Company has received from, or there has been published by,
the Internal Revenue Service a ruling or (B) since the date of the Indenture,
there has been a change in the applicable federal income tax law, in either case
to the effect that, and based thereon such Opinion of Counsel shall confirm
that, the Holders of the outstanding Notes will not recognize income, gain or
loss for federal income tax purposes as a result of such defeasance and will be
subject to federal income tax on the same amounts, in the same manner and at the
same times as would have been the case if such defeasance had not occurred;
(iii) in the case of covenant defeasance, the Company shall have delivered to
the Trustee an Opinion of Counsel in the United States to the effect that the
Holders of the outstanding Notes will not recognize income, gain or loss for
federal income tax purposes as a result of such covenant defeasance and will be
subject to federal income tax on the same amounts, in the same manner and at the
same times as would have been the case if such covenant defeasance had not
occurred; (iv) no Default or Event of Default shall have occurred and be
continuing on the date of such deposit or insofar as clause (e) under the first
paragraph under "Events of Default" are concerned, at any time in the period
ending on the 91st day after the date of deposit; (v) such defeasance or
covenant defeasance shall not result in a breach of violation of, or constitute
a default under the Indenture or any other material agreement or instrument to
which the Company or any Principal Subsidiary is a party or by which the Company
or any Principal Subsidiary is bound; (vi) the Company shall have delivered to
the Trustee an opinion of counsel to the effect that after the 91st day
following the deposit, the trust funds will not be subject to the effect of any
applicable bankruptcy, insolvency, reorganization or similar laws affecting
creditors' rights generally; (vii) the Company shall have delivered to the
Trustee an Officers' Certificate stating that the deposit was not made by the
Company with the intent of preferring the Holders of Notes over the other
creditors of the Company or with the intent of defeating, hindering, delaying or
defrauding creditors of the Company or others; and (viii) the Company shall have
delivered to the
 
                                       42
<PAGE>
Trustee an Officers' Certificate and an Opinion of Counsel, each stating that
all conditions precedent provided for relating to either the defeasance or the
covenant defeasance, as the case may be, have been compiled with.
 
NO PERSONAL LIABILITY OF DIRECTORS, OFFICERS, EMPLOYEES AND STOCKHOLDERS
 
    No director, officer, employee, incorporator or stockholder of the Company,
as such, shall have any liability for any obligations of the Company under the
Notes or the Indenture or for any claim based on, in respect of, or by reason
of, such obligations or their creation. Each Holder of Notes by accepting a Note
waives and releases all such liability. The waiver and release are part of the
consideration for issuance of the Notes. Such waiver may not be effective to
waive liabilities under the federal securities laws and it is the view of the
Commission that such a waiver is against public policy.
 
TRANSFER AND EXCHANGE
 
    A Holder may transfer or exchange Notes in accordance with the Indenture.
The registrar and the Trustee may require a Holder, among other things, to
furnish appropriate endorsements and transfer documents and the Company may
require a Holder to pay any taxes and fees required by law or permitted by the
Indenture. The Company is not required to transfer or exchange any Note selected
for redemption. Also, the Company is not required to transfer or exchange any
Note for a period of 15 days before a selection of Notes to be redeemed.
 
    The registered Holder of a Note will be treated as the owner of it for all
purposes.
 
BOOK-ENTRY, DELIVERY AND FORM
 
    Except as set forth below, Exchange Notes will be issued in registered,
global form in minimum denominations of $1,000 and integral multiples of $1,000
in excess thereof.
 
    The certificates representing the Exchange Notes will be represented by a
single, permanent Global Exchange Note, in definitive, fully registered form
without interest coupons. The Global Note will be deposited upon issuance with
the Trustee as custodian for DTC, and registered in the name of DTC or its
nominee for credit to an account of a direct or indirect participant in DTC as
described below.
 
    Except as set forth below, the Global Note may be transferred, in whole and
not in part, only to another nominee of DTC or to a successor of DTC or its
nominee. Beneficial interests in the Global Note may not be exchanged for Notes
in certificated form except in the limited circumstances described below. See
"--Exchange of Book-Entry Notes for Certificated Notes."
 
DEPOSITORY PROCEDURES
 
    DTC has advised the Company that DTC is a limited-purpose trust company
created to hold securities for its participating organizations (collectively,
the "Participants") and to facilitate the clearance and settlement of
transactions in those securities between Participants through electronic book-
entry changes in accounts of its Participants. The Participants include
securities brokers and dealers (including the Initial Purchasers), banks, trust
companies, clearing corporations and certain other organizations. Access to
DTC's system is also available to other entities such as banks, brokers, dealers
and trust companies that clear through or maintain a custodial relationship with
a Participant, either directly or indirectly (collectively, the "Indirect
Participants"). Persons who are not Participants may beneficially own securities
held by or on behalf of DTC only through the Participants or the Indirect
Participants. The ownership interests and transfer of ownership interests of
each actual purchaser of each security held by or on behalf of DTC are recorded
on the records of the Participants and Indirect Participants.
 
                                       43
<PAGE>
    Euroclear and CEDEL will hold interests in the Global Note on behalf of
their participants through customers' securities accounts in their respective
names on the books of their respective depositaries, which are Morgan Guaranty
Trust Company of New York, Brussels office, as operator of Euroclear, and
Citibank, N.A., as operator of CEDEL. The depositaries, in turn, will hold such
interests in the Global Note in customers' securities accounts in the
depositaries' names on the books of DTC. All interests in the Global Note,
including those held through Euroclear or CEDEL, may be subject to the
procedures and requirements of DTC. Those interests held through Euroclear or
CEDEL may also be subject to the procedures and requirements of such systems.
The laws of some states require that certain persons take physical delivery in
definitive form of securities that they own. Consequently, the ability to
transfer beneficial interests in the Global Note to such persons will be limited
to that extent. Because DTC can act only on behalf of Participants, which in
turn act on behalf of Indirect Participants and certain banks, the ability of a
person having beneficial interests in the Global Note to pledge such interests
to persons or entities that do not participate in the DTC system, or otherwise
take actions in respect of such interests, may be affected by the lack of a
physical certificate evidencing such interests. For certain other restrictions
on the transferability of the Notes, see "--Exchange of Book-Entry Notes for
Certificated Notes," "--Exchange of Certificated Notes for Book-Entry Notes."
 
    EXCEPT AS DESCRIBED BELOW, OWNERS OF INTERESTS IN THE GLOBAL NOTES WILL NOT
HAVE NOTES REGISTERED IN THEIR NAMES, WILL NOT RECEIVE PHYSICAL DELIVERY OF
NOTES IN CERTIFICATED FORM AND WILL NOT BE CONSIDERED THE REGISTERED OWNERS OR
HOLDERS THEREOF UNDER THE INDENTURE FOR ANY PURPOSE.
 
    Payments in respect of the principal of and premium, if any, and interest on
the Global Note registered in the name of DTC or its nominee will be payable by
the Trustee to DTC in its capacity as the registered Holder under the Indenture.
Under the terms of the Indenture, the Company and the Trustee will treat the
persons in whose names the Notes, including the Global Note, are registered as
the owners thereof for the purpose of receiving such payments and for any and
all other purposes whatsoever. Consequently, neither the Company, the Trustee
nor any agent of the Company or the Trustee has or will have any responsibility
or liability for (i) any aspect of DTC's records or any Participant's or
Indirect Participant's records relating to or payments made on account of
beneficial ownership interests in the Global Note, or for maintaining,
supervising or reviewing any of DTC's records or any Participant's or Indirect
Participant's records relating to the beneficial ownership interests in the
Global Note or (ii) any other matter relating to the actions and practices of
DTC or any of its Participants or Indirect Participants. DTC has advised the
Company that its current practice, upon receipt of any payment in respect of
securities such as the Notes (including principal and interest), is to credit
the accounts of the relevant Participants with the payment on the payment date,
in amounts proportionate to their respective holdings in the principal amount of
beneficial interests in the relevant security as shown on the records of DTC
unless DTC has reason to believe it will not receive payment on such payment
date. Payments by the Participants and the Indirect Participants to the
beneficial owners of Notes will be governed by standing instructions and
customary practices and will be the responsibility of the Participants or the
Indirect Participants and will not be the responsibility of DTC, the Trustee or
the Company. Neither the Company nor the Trustee will be liable for any delay by
DTC or any of its Participants in identifying the beneficial owners of the
Notes, and the Company and the Trustee may conclusively rely on and will be
protected in relying on instructions from DTC or its nominee for all purposes.
 
    Except for trades involving only Euroclear and CEDEL participants, interests
in the Global Note are expected to be eligible to trade in DTC's Same-Day Funds
Settlement System and secondary market trading activity in such interests will
therefore settle in immediately available funds, subject in all cases to the
rules and procedures of DTC and its participants. See "--Same-Day Settlement and
Payment."
 
    Transfers between Participants in DTC will be effected in accordance with
DTC's procedures, and will be settled in same-day funds, and transfers between
participants in Euroclear and CEDEL will be effected in the ordinary way in
accordance with their respective rules and operating procedures.
 
                                       44
<PAGE>
    Subject to compliance with the transfer restrictions applicable to the Notes
described herein, cross-market transfers between the Participants in DTC, on the
one hand, and Euroclear or CEDEL participants, on the other hand, will be
effected through DTC in accordance with DTC's rules on behalf of Euroclear or
CEDEL, as the case may be, by its respective depositary; however such
cross-market transactions will require delivery of instructions to Euroclear or
CEDEL, as the case may be, by the counterparty in such system in accordance with
the rules and procedures and within the established deadlines (Brussels time) of
such system. Euroclear or CEDEL, as the case may be, will, if the transaction
meets its settlement requirements, deliver instructions to its respective
depositary to take action to effect final settlement on its behalf by delivering
or receiving interests in the Global Note in DTC, and making or receiving
payment in accordance with normal procedures for same-day funds settlement
applicable to DTC. Euroclear participants and CEDEL participants may not deliver
instructions directly to the depositaries for Euroclear or CEDEL.
 
    Because of time zone differences, the securities account of a Euroclear or
CEDEL participant purchasing an interest in the Global Note from a Participant
in DTC will be credited, and any such crediting will be reported to the relevant
Euroclear or CEDEL participant, during the securities settlement processing day
(which must be a business day for Euroclear and CEDEL) immediately following the
settlement date of DTC. DTC has advised the Company that cash received in
Euroclear or CEDEL as a result of sales of interests in the Global Note by or
through a Euroclear or CEDEL participant to a Participant in DTC will be
received with value on the settlement date of DTC but will be available in the
relevant Euroclear or CEDEL cash account only as of the business day for
Euroclear or CEDEL following DTC's settlement date.
 
    DTC has advised the Company that it will take any action permitted to be
taken by a Holder of Notes only at the direction of one or more Participants to
whose account with DTC interests in the Global Note are credited and only in
respect of such portion of the aggregate principal amount of the Notes as to
which such Participant or Participants has or have given such direction.
However, if there is an Event of Default under the Notes, DTC reserves the right
to exchange the Global Note for legended Notes in certificated form, and to
distribute such Notes to its Participants.
 
    The information in this section concerning DTC, Euroclear and CEDEL and
their book-entry systems has been obtained from sources that the Company
believes to be reliable, but the Company takes no responsibility for the
accuracy thereof.
 
    Although DTC, Euroclear and CEDEL have agreed to the foregoing procedures to
facilitate transfers of interests in the Global Note among participants in DTC,
Euroclear and CEDEL, they are under no obligation to perform or to continue to
perform such procedures, and such procedures may be discontinued at any time.
Neither the Company nor the Trustee will have any responsibility for the
performance by DTC, Euroclear or CEDEL or their respective participants or
indirect participants of their respective obligations under the rules and
procedures governing their operations.
 
EXCHANGE OF BOOK-ENTRY NOTES FOR CERTIFICATED NOTES
 
    The Global Note is exchangeable for definitive Notes in registered
certificated form if (i) DTC (x) notifies the Company that it is unwilling or
unable to continue as depositary for the Global Note and the Company thereupon
fails to appoint a successor depositary or (y) has ceased to be a clearing
agency registered under the Exchange Act, (ii) the Company, at its option,
notifies the Trustee in writing that it elects to cause the issuance of the
Notes in certificated form or (iii) there shall have occurred and be continuing
an Event of Default or any event which after notice or lapse of time or both
would be an Event of Default with respect to the Notes. In all cases,
certificated Notes delivered in exchange for the Global Note or beneficial
interests therein will be registered in the names, and issued in any approved
denominations, requested by or on behalf of the depositary (in accordance with
its customary procedures).
 
                                       45
<PAGE>
CERTAIN DEFINITIONS
 
    Set forth below are certain defined terms used in the Indenture. Reference
is made to the Indenture with respect to any other capitalized terms used herein
for which no definition is provided.
 
    "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker as having a maturity comparable to
the remaining term of the Notes that would be utilized, at the time of selection
and in accordance with customary financial practice, in pricing new issues of
corporate debt securities of comparable maturity to the remaining term of the
Notes.
 
    "Comparable Treasury Price" means, with respect to any redemption date, (i)
the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
Business Day preceding such redemption date, as set forth in the daily
statistical release (or any successor release) published by the Federal Reserve
Bank of New York and designated "Composite 3:30 p.m. Quotations for U.S.
Government Securities" or (ii) if such release (or any successor release) is not
published or does not contain such prices on such Business Day, (A) the average
of the Reference Treasury Dealer Quotations for such redemption date, after
excluding the highest and lowest such Reference Treasury Dealer Quotations, or
(B) if the Trustee obtains fewer than four such Reference Treasury Dealer
Quotations, the average of all such Quotations.
 
    "Consolidated Net Tangible Assets" of the Company means the aggregate amount
of assets (less applicable reserves and other properly deductible items) after
deducting therefrom (a) all current liabilities (excluding any indebtedness for
money borrowed having a maturity of less than 12 months from the date of the
most recent consolidated balance sheet of the Company but which by its terms is
renewable or extendible beyond 12 months from such date at the option of the
borrower) and (b) all goodwill, trade names, patents, unamortized debt discount
and expense and any other like intangibles, all as set forth on the most recent
consolidated balance sheet of the Company and computed in accordance with
generally accepted accounting principles.
 
    "Default" means any event that is or with the passage of time or the giving
of notice or both would be an Event of Default.
 
    "Holder" means a holder of any of the Notes.
 
    "Indebtedness" of any Person means (without duplication), with respect to
any Person, (i) every obligation of such Person for money borrowed, (ii) every
obligation of such Person evidenced by bonds, debentures, notes or other similar
instruments, (iii) every reimbursement obligation of such Person with respect to
letters of credit, bankers' acceptances or similar facilities issued for the
account of such Person and (iv) every obligation of the type referred to in
clauses (i) through (iii) of another Person the payment of which such Person has
guaranteed or is responsible or liable for, directly or indirectly, as obligor,
guarantor or otherwise (but only, in the case of clause (iv), to the extent such
Person has guaranteed or is responsible or liable for such obligations). The
amount of any Indebtedness outstanding as of any date shall be (i) the accreted
value thereof, in the case of any Indebtedness that does not require current
payments of interest, and (ii) the principal amount thereof, together with any
interest thereon that is more than 30 days past due, in the case of any other
Indebtedness.
 
    "Independent Investment Banker" means any of the Initial Purchasers and its
successors.
 
    "Lien" means, with respect to any property or assets, any mortgage or deed
of trust, pledge, hypothecation, assignment, security interest, lien,
encumbrance, or other security arrangement of any kind or nature whatsoever on
or with respect to such property or assets (including any conditional sale or
other title retention agreement having substantially the same economic effect as
any of the foregoing).
 
    "Person" means any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization, government
or any agency or political subdivision thereof or any other entity.
 
                                       46
<PAGE>
    "Principal Subsidiary" means American Re-Insurance, or any other Subsidiary
of the Company which shall hereafter succeed by merger or otherwise to a major
part of the business of one or more of the Principal Subsidiary. The decision as
to whether a Subsidiary shall have succeeded to a major part of the Principal
Subsidiary shall be made in good faith by the Board of Directors of the Company
or a committee thereof by the adoption of a resolution so stating, and the
Company shall within 30 days of the date of the adoption of such resolution
deliver to the Trustee a copy thereof, certified by the Corporate Secretary or
the Assistant Corporate Secretary of the Company.
 
    "Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer and any redemption date, the average, as determined by the
Trustee, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m. on the
third business day preceding such redemption date.
 
    "Reference Treasury Dealer" means each of the Initial Purchasers and their
respective successors; PROVIDED, HOWEVER, that if any of the foregoing shall
cease to be a primary U.S. Government securities dealer in New York City (a
"Primary Treasury Dealer"), the Company shall substitute therefor another
Primary Treasury Dealer.
 
    "Stated Maturity," when used with respect to any Note or any installment of
principal thereof or interest thereon, means the date specified in such Note as
the fixed date on which the principal of such Note or such installment of
principal or interest is due and payable.
 
    "Subsidiary" of any Person means (i) a corporation more than 50% of the
combined voting power of the outstanding voting stock of which is owned,
directly or indirectly, by such Person or by one or more other Subsidiaries of
such Person or by such Person and one or more Subsidiaries thereof or (ii) any
other Person (other than a corporation) in which such Person, or one or more
other Subsidiaries of such Person or such Person and one or more other
Subsidiaries thereof, directly or indirectly, has at least a majority ownership
and power to direct the policies, management and affairs thereof.
 
    "Treasury Yield" means, with respect to any redemption date, the rate per
annum equal to the semiannual equivalent yield to maturity of the Comparable
Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as
a percentage of its principal amount) equal to the Comparable Treasury Price for
such redemption date.
 
                                       47
<PAGE>
                 UNITED STATES FEDERAL INCOME TAX CONSEQUENCES
 
    In the opinion of Simpson Thacher & Bartlett, New York, New York, the
exchange of Old Notes for Exchange Notes will not constitute a taxable event to
Holders for United States federal income tax purposes. Consequently, no gain or
loss will be recognized by a Holder upon receipt of an Exchange Note, the
holding period of the Exchange Note will include the holding period of the Old
Note and the basis of the Exchange Note will be the same as the basis of the Old
Note immediately before the exchange.
 
    The opinion of Simpson Thacher & Bartlett is based upon the provisions of
the Internal Revenue Code of 1986, as amended, and the regulations, rulings and
judicial decisions thereunder as of the date hereof, and such authorities may be
repealed, revoked or modified so as to result in federal income tax consequences
different from those discussed above. PERSONS CONSIDERING THE EXCHANGE OF OLD
NOTES FOR EXCHANGE NOTES SHOULD CONSULT THEIR OWN TAX ADVISORS CONCERNING THE
UNITED STATES FEDERAL INCOME TAX CONSEQUENCES IN LIGHT OF THEIR PARTICULAR
SITUATIONS AS WELL AS ANY CONSEQUENCES ARISING UNDER THE LAWS OF ANY OTHER
TAXING JURISDICTIONS.
 
                                       48
<PAGE>
                              PLAN OF DISTRIBUTION
 
   
    Each broker-dealer that receives Exchange Notes for its own account pursuant
to the Exchange Offer must acknowledge that it will deliver a prospectus in
connection with any resale of such Exchange Notes. This Prospectus, as it may be
amended or supplemented from time to time, may be used by a broker-dealer in
connection with resales of Exchange Notes received in exchange for Old Notes
where such Old Notes were acquired as a result of market-making activities or
other trading activities. To the extent any such broker-dealer participates in
the Exchange Offer and so notifies the Company, or causes the Company to be so
notified in writing,the Company has agreed to make available for a period of no
greater than 180 days after the consummation of the Exchange Offer this
Prospectus as amended or supplemented, available to such broker-dealer for use
in connection with any such resale, and will promptly send additional copies of
this Prospectus and any amendment or supplement to this Prospectus to any
broker-dealer that requests such documents in the Letter of Transmittal. In
addition, until May 13, 1997 (90 days after the date of this Prospectus), all
dealers effecting transactions in the New Notes may be required to deliver a
prospectus.
    
 
    The Company will not receive any proceeds from any sale of Exchange Notes by
broker-dealers. Exchange Notes received by broker-dealers for their own account
pursuant to the Exchange Offer may be sold from time to time in one or more
transactions in the over-the-counter market, in negotiated transactions, through
the writing of options on the Exchange Notes or a combination of such methods of
resale, at prevailing market prices at the time of resale, at prices related to
such prevailing market prices or at negotiated prices. Any such resale may be
made directly to purchasers or to or through brokers or dealers who may receive
compensation in the form of commissions or concessions from any such
broker-dealer or the purchasers of any such Exchange Notes. Any broker-dealer
that resells Exchange Notes that were received by it for its own account
pursuant to the Exchange Offer and any broker or dealer that participates in a
distribution of such Exchange Notes may be deemed to be an "underwriter" within
the meaning of the Securities Act and any profit on any such resale of Exchange
Notes and any commissions or concessions received by any such persons may be
deemed to be underwriting compensation under the Securities Act. The Letter of
Transmittal states that, by acknowledging that it will deliver and by delivering
a prospectus, a broker-dealer will not be deemed to admit that it is an
"underwriter" within the meaning of the Securities Act.
 
    The Company has agreed to pay all expenses incident to the Exchange Offer
(other than commissions and concessions of any broker-dealers), subject to
certain prescribed limitations, and will indemnify the holders of the Old Notes
against certain liabilities, including certain liabilities that may arise under
the Securities Act.
 
    By its acceptance of the Exchange Offer, any broker-dealer that receives
Exchange Notes pursuant to the Exchange Offer hereby agrees to notify the
Company prior to using the Prospectus in connection with the sale or transfer of
Exchange Notes, and acknowledges and agrees that, upon receipt of notice from
the Company of the happening of any event which makes any statement in the
Prospectus untrue in any material respect or which requires the making of any
changes in the Prospectus in order to make the statements therein not misleading
or which may impose upon the Company disclosure obligations that may have a
material adverse effect on the Company (which notice the Company agrees to
deliver promptly to such broker-dealer), such broker-dealer will suspend use of
the Prospectus until the Company has notified such broker-dealer that delivery
of the Prospectus may resume and has furnished copies of any amendment or
supplement to the Prospectus to such broker-dealer.
 
                                       49
<PAGE>
                                    EXPERTS
 
    The financial statements of the Company and its consolidated subsidiaries as
of December 31, 1995 and 1994 and for the years ended December 31, 1995, 1994
and 1993 and the three-month period ended December 31, 1992, and the related
financial statement schedules incorporated in this Offering Circular by
reference from the 1995 10-K have been audited by Deloitte & Touche LLP,
independent auditors, except with respect to the financial statements of the
Company and its consolidated subsidiaries for the three-month period ended
December 31, 1992 and the related financial statement schedules, as stated in
their reports which are based on the reports of other auditors. The reports of
Deloitte & Touche LLP include an explanatory paragraph as to a change in the
method of accounting in 1994, for debt and equity securities to conform with a
new accounting pronouncement: Statement of Financial Accounting Standards No.
115. The explanatory paragraph also states that in 1993, the Company changed its
method of accounting for certain reinsurance contracts to conform with two new
accounting pronouncements: Emerging Issues Task Force Issue No. 93-6 and
Statement of Financial Accounting Standards No. 113.
 
   
    Such financial statements of the Company and its consolidated subsidiaries
are incorporated herein in reliance upon the report of Deloitte & Touche LLP
given upon their authority as experts in accounting and auditing.
    
 
                                 LEGAL MATTERS
 
    Certain matters relating to the legality of the Notes will be passed upon on
behalf of the Company by Robert K. Burgess, Senior Vice President, General
Counsel and Secretary for the Company.
 
                                       50
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
    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. IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE
RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY. THIS PROSPECTUS DOES NOT
CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER TO BUY ANY SECURITIES
OTHER THAN THOSE TO WHICH IT RELATES IN ANY JURISDICTION WHERE OR TO ANY PERSON
TO WHOM, IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY
OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,
CREATE ANY IMPLICATION THAT THERE HAS NOT BEEN ANY CHANGE IN THE FACTS SET FORTH
IN THE PROSPECTUS OR IN THE AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                    PAGE
                                                  ---------
 
<S>                                               <C>
Available Information...........................          3
 
Risk Factors....................................          9
 
The Company.....................................         13
 
Capitalization..................................         17
 
Ratio of Earnings to Fixed Charges..............         17
 
Pro Forma Condensed Consolidated Financial
  Statement.....................................
 
Selected Consolidated Financial Data of the
  Company.......................................         18
 
Results of Operations...........................         21
 
The Exchange Offer..............................         26
 
Description of the Exchange Notes...............         37
 
United States Federal Income Tax Consequences...         48
 
Plan of Distribution............................         49
 
Experts.........................................         50
 
Legal Matters...................................         50
</TABLE>
 
                            ------------------------
 
                                  $500,000,000
 
                                     [LOGO]
 
                                  AMERICAN RE
                                  CORPORATION
 
                                 -------------
 
                                   PROSPECTUS
 
                            ------------------------
 
                     OFFER TO EXCHANGE $500,000,000 OF ITS
                          7.45% SENIOR NOTES DUE 2026,
                      SERIES B, WHICH HAVE BEEN REGISTERED
                   UNDER THE SECURITIES ACT, FOR $500,000,000
                        OF ITS OUTSTANDING 7.45% SENIOR
                           NOTES DUE 2026, SERIES A.
 
   
                               FEBRUARY 12, 1997
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    American Re Corporation ("American Re") is a Delaware corporation. Section
145 of the General Corporation Law of the State of Delaware ("GCL") provides
that a Delaware corporation has the power to indemnify its officers and
directors in certain circumstances.
 
    Subsection (a) of Section 145 of the GCL empowers a corporation to indemnify
any director or officer, or former director or officer, who was or is a party or
is threatened to be made a party to any threatened, pending or completed action,
suit or proceeding, whether civil, criminal, administrative or investigative
(other than an action by or in the right of the corporation), against expenses
(including attorney's fees), judgments, fines and amounts paid in settlement
actually and reasonably incurred in connection with such action, suit or
proceeding provided that such director or officer acted in good faith in a
manner reasonably believed to be in or not opposed to the best interests of the
corporation, and, with respect to any criminal action proceeding, provided that
such director or officer had no cause to believe his conduct was unlawful.
 
    Subsection (b) of Section 145 empowers a corporation to indemnify any
director or officer, or former director or officer, who was or is a party or is
threatened to be made a party to any threatened, pending or completed action or
suit by or in the right of the corporation to procure a judgment in its favor by
reason of the fact that such person acted in any of the capacities set forth
above, against expenses actually and reasonably incurred in connection with the
defense or settlement of such action or suit provided that such director or
officer acted in good faith and in a manner reasonably believed to be in or not
opposed to the best interests of the corporation, except that no indemnification
may be made in respect of any claim, issue or matter as to which such director
or officer shall have been adjudged to be liable for negligence or misconduct in
the performance of his duty to the corporation unless and only to the extent
that the Court of Chancery or the court in which such action was brought shall
determine that despite the adjudication of liability such director or officer is
fairly and reasonably entitled to indemnity for such expenses which the court
shall deem proper.
 
    Section 145 further provides that to the extent a director or officer of a
corporation has been successful in the defense of any action, suit or proceeding
referred to in subsections (a) and (b) or in the defense of any claim, issue or
matter therein, he shall be indemnified against expenses (including attorney's
fees) actually and reasonably incurred by him in connection therewith; that
indemnification provided for by Section 145 shall not be deemed exclusive of any
other rights to which the indemnified party may be entitled; and empowers the
corporation to purchase and maintain insurance on behalf of a director or
officer of the corporation against any liability asserted against him or
incurred by him in any such capacity or arising out of his status as such
whether or not the corporation would have the power to indemnify him against
such liability under Section 145.
 
    Under the Company's Restated Certificate of Incorporation (the "Charter") no
director of the Company shall be personally liable to the Company or its
stockholders for monetary damages for breach of fiduciary duty as a director,
except for liability (i) for any breach of the director's duty of loyalty to the
Company or its stockholders, (ii) for acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii) under
Section 174 of the General Corporation Law, or (iv) for any transaction from
which the director derived an improper personal benefit. The Charter and the
Bylaws of the Company also provide for indemnification of the officers and
directors of the Company to the full extent permitted by applicable law.
 
    American Re has placed in effect insurance coverage which purports (a) to
insure it against certain costs of indemnification which may be incurred by it
pursuant to the aforementioned Bylaw provisions or
 
                                      II-1
<PAGE>
otherwise, and (b) to insure the officers and directors of the registrant and of
its subsidiaries against certain liabilities incurred by them in the discharge
of their functions as officers and directors except for liabilities arising from
their own malfeasance.
 
ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
    Set forth below is a list of the exhibits included as part of this
Registration Statement.
 
   
<TABLE>
<CAPTION>
EXHIBIT
NO.                              DESCRIPTION OF EXHIBIT
- ------ --------------------------------------------------------------------------
<C>    <S>
 
  3.1  Restated Certificate of Incorporation of the Company is incorporated by
         reference from the Company's Form S-1, Registration Statement No.
         33-49110, Exhibit 3.1, as filed with the Securities and Exchange
         Commission on July 1, 1992.
 
**3.2  By-laws of the Company, adopted on November 25, 1996.
 
  3.3  Certificate of Amendment to the Restated Certificate of Incorporation of
         the Company is incorporated by reference from Amendment No. 2 to the
         Company's Form S-1, Registration Statement No. 33-54938, Exhibit 3.3, as
         filed with the Securities and Exchange Commission on January 25, 1993.
 
**4.1  Indenture, dated as of December 24, 1996, among the Company and State
         Street Bank and Trust Company, as Trustee, relating to the 7.45% Senior
         Notes, due 2026.
 
**4.2  Form of 7.45% Senior Notes, Series B, due 2026.
 
**4.3  Form of 7.45% Senior Notes, Series A, due 2026.
 
**4.4  Registration Rights Agreement, dated as of December 24, 1996, among the
         Company, Goldman, Sachs & Co., Donaldson, Lufkin & Jenrette, Merrill
         Lynch & Co., J.P. Morgan & Co., Morgan Stanley & Co. Incorporated,
         Salomon Brothers Inc, Smith Barney Inc. and UBS Securities.
 
 *5    Opinion of Robert K. Burgess, Senior Vice President, General Counsel and
         Secretary, dated February 11, 1997.
 
**8    Tax Opinion of Simpson Thacher & Bartlett, dated as of January 29, 1997.
 
**12   Computation of Ratio of Earnings to Fixed Charges.
 
**21   List of subsidiaries.
 
*23.1  Consent of Robert K. Burgess, Senior Vice President, General Counsel and
         Secretary (included as part of his opinion filed as Exhibit 5 hereto).
 
**23.2 Consent of Simpson Thacher & Bartlett (included as part of its opinion
         filed as Exhibit 8 hereto).
 
*23.3  Consent of Deloitte & Touche LLP dated February 12, 1997 as to the
         financial statements of the Company and its consolidated subsidiaries
         dated February 6, 1996.
 
**24   Powers of Attorney.
 
**25   Form T-1 Statement of Eligibility and Qualification under the Trust
         Indenture Act of 1939 of State Street Bank and Trust Company, as
         Trustee.
</TABLE>
    
 
                                      II-2
<PAGE>
   
<TABLE>
<CAPTION>
EXHIBIT
NO.                              DESCRIPTION OF EXHIBIT
- ------ --------------------------------------------------------------------------
<C>    <S>
 28    Information from reports furnished to state regulatory authorities is
         incorporated by reference from the Company's Form 10-K, Exhibit 28, as
         filed with the Securities and Exchange Commission on March 29, 1996.
 
**99.1 Form of Letter of Transmittal.
 
**99.2 Form of Notice of Guaranteed Delivery.
 
**99.3 Form of Guidelines For Certification of Taxpayer Identification Number on
         Substitute Form W-9
</TABLE>
    
 
- ------------------------
 
 *  Filed herewith
 
   
**  Filed previously
    
 
ITEM 22.  UNDERTAKINGS.
 
    The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual reports pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities and Exchange
Act of 1934) that are incorporated by reference in the registration statement
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial BONA FIDE offering thereof.
 
    Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers, and controlling persons of the
registrant pursuant to the foregoing provisions or otherwise, the registrant has
been advised that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act and
is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the registrant of expenses
incurred or paid by a director, officer, or controlling person of the registrant
in the successful defense of any action, suit, or proceeding) is asserted by
such director, officer, or controlling person in connection with the securities
being registered, the registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the questions whether such indemnification by it is
against public policy as expressed in the Act and will be governed by the final
adjudication of such issue.
 
    The registrant hereby undertakes:
 
        (1) that prior to any public reoffering of the securities registered
    hereunder through use of a prospectus which is a part of this registration
    statement, by any person or party who is deemed to be an underwriter within
    the meaning of Rule 145(c), such reoffering prospectus will contain the
    information called for by the applicable registration form with respect to
    reofferings by persons who may be deemed underwriters, in addition to the
    information called for by the other items of the applicable form.
 
        (2) that every prospectus: (i) that is filed pursuant to paragraph (1)
    immediately preceding, or (ii) that purports to meet the requirements of
    Section 10(a)(3) of the Securities Act of 1933 and is used in connection
    with an offering of securities subject to Rule 415, will be filed as a part
    of an amendment to the registration statement and will not be used until
    such amendment is effective, and that, for purposes of determining any
    liability under the Securities Act of 1933, each such post-effective
    amendment shall be deemed to be a new registration statement relating to the
    securities offered therein, and the offering of such securities at that time
    shall be deemed to be the initial BONA FIDE offering thereof.
 
                                      II-3
<PAGE>
        (3) To be filed, during any period in which offers or sales are being
    made, a post-effective amendment to this registration statement:
 
           (i) To include any prospectus required by Section 10(a)(3) of the
       Securities Act of 1933;
 
           (ii) To reflect in the prospectus any fact or event arising after the
       effective date of the registration statement (or the most recent
       post-effective amendment thereof) which, individually or in the
       aggregate, represents a fundamental change in the information set forth
       in the registration statement;
 
           (iii) To include any material information with respect to the plan of
       distribution not previously disclosed in the registration statement or
       any material change to such information in the registration statement.
 
        (4) That, for the purpose of determining any liability under the
    Securities Act of 1933, each such post-effective amendment shall be deemed
    to be a new registration statement relating to the securities offered
    therein, and the offering of such securities at that time shall be deemed to
    be the initial BONA FIDE offering thereof.
 
        (5) To remove from registration by means of a post-effective amendment
    any of the securities being registered which remain unsold at the
    termination of the offering.
 
        (6) To respond to requests for information that is incorporated by
    reference into the prospectus pursuant to Items 4, 10(b), 11 or 13 of this
    form, within one business day of receipt of such request, and to send the
    incorporated documents by first class mail or other equally prompt means.
    This includes information contained in documents filed subseqeuent to the
    effective date of the registration statement through the date of responding
    to the request.
 
        (7) To supply by means of a post-effective amendment all information
    concerning a transaction, and the company being acquired involved therein,
    that was not the subject of and included in the registration statement when
    it became effective.
 
                                      II-4
<PAGE>
                                   SIGNATURES
 
   
    Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Princeton,
on the 12th day of February, 1997.
    
 
                                AMERICAN RE CORPORATION
 
                                BY:            /S/ ROBERT K. BURGESS
                                     -----------------------------------------
                                       SENIOR VICE PRESIDENT, GENERAL COUNSEL
                                                   AND SECRETARY
 
   
    Pursuant to the requirements of the Securities Act of 1933, this Amendment
to the Registration Statement has been signed on the 12th day of February by the
following persons in the capacities indicated:
    
 
   
     /s/ JAMES R. FISHER        Senior Vice President
- ------------------------------  and Chief Financial and       February 12, 1997
       James R. Fisher          Accounting Officer
 
      /s/ CLAUS HELBIG*
- ------------------------------  Director                      February 12, 1997
         Claus Helbig
 
   /s/ PAUL H. INDERBITZIN*     Director, Chairman, Chief
- ------------------------------  Executive Officer and         February 12, 1997
     Paul H. Inderbitzin        President
 
     /s/ EDWARD B. JOBE*
- ------------------------------  Director                      February 12, 1997
        Edward B. Jobe
 
      /s/ HANS RATHNOW*
- ------------------------------  Director                      February 12, 1997
         Hans Rathnow
 
  /s/ HANS-JURGEN SCHINZLER*
- ------------------------------  Director                      February 12, 1997
    Hans-Jurgen Schinzler
 
    
 
*By:               /s/ ROBERT K. BURGESS
        ------------------------------------------
        Senior Vice President, General Counsel and
                        Secretary
 
                                      II-5
<PAGE>
                               INDEX TO EXHIBITS
 
   
<TABLE>
<CAPTION>
                                                                                                       PAGE
                                                                                                     NUMBER IN
                                                                                                    SEQUENTIAL
                                                                                                     NUMBERING
EXHIBIT NO.                                      DESCRIPTION                                          SYSTEM
- -----------  -----------------------------------------------------------------------------------  ---------------
<C>          <S>                                                                                  <C>
 
       3.1   Restated Certificate of Incorporation of the Company is incorporated by reference
               from the Company's Form S-1, Registration Statement No. 33-49110, Exhibit 3.1, as
               filed with the Securities and Exchange Commission on July 1, 1992. ..............
 
     **3.2   By-laws of the Company, adopted on November 25, 1996. .............................
 
       3.3   Certificate of Amendment to the Restated Certificate of Incorporation of the
               Company is incorporated by reference from Amendment No. 2 to the Company's Form
               S-1, Registration Statement No. 33-54938, Exhibit 3.3, as filed with the
               Securities and Exchange Commission on January 25, 1993. .........................
 
     **4.1   Indenture, dated as of December 24, 1996, among the Company and State Street Bank
               and Trust Company, as Trustee, relating to the 7.45% Senior Notes, due 2026. ....
 
     **4.2   Form of 7.45% Senior Notes, Series B, due 2026. ...................................
 
     **4.3   Form of 7.45% Senior Notes, Series A, due 2026. ...................................
 
     **4.4   Registration Rights Agreement, dated as of December 24, 1996, among the Company,
               Goldman, Sachs & Co., Donaldson, Lufkin & Jenrette, Merrill Lynch & Co., J.P.
               Morgan & Co., Morgan Stanley & Co. Incorporated, Salomon Brothers Inc, Smith
               Barney Inc. and UBS Securities. .................................................
 
        *5   Opinion of Robert K. Burgess, Senior Vice President, General Counsel and Secretary,
               dated February 11, 1997. ........................................................
 
       **8   Tax Opinion of Simpson Thacher & Bartlett, dated as of January 29, 1997. ..........
 
      **12   Computation of Ratio of Earnings to Fixed Charges. ................................
 
      **21   List of subsidiaries. .............................................................
 
     *23.1   Consent of Robert K. Burgess, Senior Vice President, General Counsel and Secretary
               (included as part of his opinion filed as Exhibit 5 hereto). ....................
 
    **23.2   Consent of Simpson Thacher & Bartlett (included as part of its opinion filed as
               Exhibit 8 hereto). ..............................................................
 
     *23.3   Consent of Deloitte & Touche LLP dated February 12, 1997 as to the financial
               statements of the Company and its consolidated subsidiaries dated February 6,
               1996. ...........................................................................
 
      **24   Powers of Attorney. ...............................................................
 
      **25   Form T-1 Statement of Eligibility and Qualification under the Trust Indenture Act
               of 1939 of State Street Bank and Trust Company, as Trustee. .....................
</TABLE>
    
<PAGE>
   
<TABLE>
<CAPTION>
                                                                                                       PAGE
                                                                                                     NUMBER IN
                                                                                                    SEQUENTIAL
                                                                                                     NUMBERING
EXHIBIT NO.                                      DESCRIPTION                                          SYSTEM
- -----------  -----------------------------------------------------------------------------------  ---------------
<C>          <S>                                                                                  <C>
        28   Information from reports furnished to state regulatory authorities is incorporated
               by reference from the Company's Form 10-K, Exhibit 28, as filed with the
               Securities and Exchange Commission on March 29, 1996. ...........................
 
    **99.1   Form of Letter of Transmittal. ....................................................
 
    **99.2   Form of Notice of Guaranteed Delivery. ............................................
 
    **99.3   Form of Guidelines For Certification of Taxpayer Identification Number on
               Substitute Form W-9 .............................................................
</TABLE>
    
 
- ------------------------
 
 *  Filed herewith
 
   
**  Filed previously
    
<PAGE>
   
INDEPENDENT AUDITORS' CONSENT
    
 
   
    We consent to the incorporation by reference in Amendment No. 1 to
Registration Statement No. 333-20663 of American Re Corporation on Form S-4 of
our report dated February 6, 1996, appearing in and incorporated by reference in
the Annual Report on Form 10-K of American Re Corporation for the year ended
December 31, 1995 and to the reference to us under the heading "Experts" in the
Prospectus, which is part of this Registration Statement.
    
 
   
/s/ Deloitte & Touche LLP
Parsippany, New Jersey
February 12, 1997
    

<PAGE>

                                                                      Exhibit 5


                     [AMERICAN RE CORPORATION LETTERHEAD]


                                                              February 11, 1997

American Re Corporation
555 College Road East
Princeton,NJ 08543-5241


Re:     American Re Corporation 7.45% Senior Notes Due 2026
        ---------------------------------------------------


Ladies and Gentlemen:

    I am Executive Vice President, General Counsel and Secretary of American 
Re Corporation (the "Company"). You have requested my opinion in connection 
with the registration of 500,000,000 aggregate principal amount of the 
Company's 7.45% Senior Notes due 2026, Series B (the "Series B Senior 
Notes"). All references to the Registration Statement contained herein shall 
be deemed to refer to the Registration Statement on Form S-4 (File No. 
333-20663) dated January 29, 1997 and any amendments thereto.

    I have examined, and with your consent have relied as to matters of fact 
upon, originals or copies, certified or otherwise identified to my 
satisfaction, of such corporate records, agreements, documents and other 
instruments and such certificates or comparable documents or oral statements 
of public officials and of officers and representatives of the Company, and 
have made such other legal and factual examinations and inquiries, as I have 
deemed necessary or appropriate for the purposes of this opinion.

     In my examination, I have assumed the genuineness of all signatures, the 
legal capacity of natural persons, the authenticity of all documents 
submitted to me as originals, the conformity to original documents of all 
documents submitted to me as copies, and the authenticity of the originals of 
such latter documents.

     I am opining herein as to the effect on the subject transaction only of 
the federal laws of the United States and the General Corporation Law of the 
State of Delaware, and I express no opinion with respect to the applicability 
thereto, of the effect thereon, of the laws of any other jurisdiction or, in 
the case of Delaware, any other laws, or as to any


<PAGE>


Page Two
February 11, 1997


matters of insurance law or municipal law or the laws of any local agencies 
within any state.

     On the basis of the foregoing, and in reliance thereon, and subject to 
the limitations, qualifications and exceptions set forth below, I am of the 
opinion that, as of the date hereof:

     The Series B Senior Notes have been duly authorized, executed and 
delivered by the Company and assuming due authentication thereof by the 
Exchange Agent and upon issuance and delivery in accordance with the Exchange 
Offer, will constitute valid and legally binding obligations of the Company, 
subject to the effects of bankruptcy, insolvency, fraudulent conveyance, 
reorganization, moratorium and other similar laws relating to or affecting 
creditors rights generally, general equitable principles (whether considered 
in a proceeding in equity or at law) and an implied covenant of good faith 
and fair dealing.

     This opinion is rendered to you solely for your benefit in connection 
with the transactions described above. This opinion may not be used or relied 
upon by you for any other purpose, or used or relied upon by any other 
person, firm or corporation for any purpose, without my prior written consent.
I consent to your filing this opinion as an exhibit to the Registration 
Statement.

                                             Very truly yours,

                                             /s/ Robert K. Burgess






<PAGE>
   
INDEPENDENT AUDITORS' CONSENT
    
 
   
    We consent to the incorporation by reference in Amendment No. 1 to
Registration Statement No. 333-20663 of American Re Corporation on Form S-4 of
our report dated February 6, 1996, appearing in and incorporated by reference in
the Annual Report on Form 10-K of American Re Corporation for the year ended
December 31, 1995 and to the reference to us under the heading "Experts" in the
Prospectus, which is part of this Registration Statement.
    
 
   
/s/ Deloitte & Touche LLP
Parsippany, New Jersey
February 12, 1997
    


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