Document:

<PAGE>
                                                                     Exhibit 4.2

                                AmerUs Group Co.

                                       And

                           BNY MIDWEST TRUST COMPANY,
                      as Collateral Agent, Custodial Agent
                           and Securities Intermediary

                                       And

                       WACHOVIA BANK, NATIONAL ASSOCIATION
                           as Purchase Contract Agent

                            FORM OF PLEDGE AGREEMENT
                           Dated as of May [__], 2003

================================================================================
<PAGE>
                                TABLE OF CONTENTS

<TABLE>
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                                    ARTICLE I
                                   DEFINITIONS

                                   ARTICLE II
                         PLEDGE; CONTROL AND PERFECTION

SECTION 2.1    The Pledge........................................................6
SECTION 2.2    Control and Perfection............................................7

                                   ARTICLE III
                       DISTRIBUTIONS ON PLEDGED COLLATERAL

                                   ARTICLE IV
        SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF DEBT SECURITIES

SECTION 4.1    Substitution for Debt Securities and the Creation
               of Growth PRIDES.................................................10
SECTION 4.2    Substitution for Treasury Securities and the
               Creation of Income PRIDES........................................11
SECTION 4.3    Termination Event................................................12
SECTION 4.4    Cash Settlement..................................................13
SECTION 4.5    Early Settlement.................................................15
SECTION 4.6    Application of Proceeds; Settlement..............................15

                                    ARTICLE V
                        VOTING RIGHTS -- DEBT SECURITIES

                                   ARTICLE VI
       RIGHTS AND REMEDIES; SUBSTITUTION OF A TREASURY PORTFOLIO FOR DEBT
                                   SECURITIES

SECTION 6.1    Rights and Remedies of the Collateral Agent......................17
SECTION 6.2    Substitution of a Treasury Portfolio for Debt
               Securities.......................................................19
SECTION 6.3    Remarketing......................................................20
SECTION 6.4    Substitutions....................................................20

                                   ARTICLE VII
                    REPRESENTATIONS AND WARRANTIES; COVENANTS

SECTION 7.1    Representations and Warranties...................................20
SECTION 7.2    Covenants........................................................21

                                  ARTICLE VIII
                              THE COLLATERAL AGENT

SECTION 8.1    Appointment, Powers and Immunities...............................22
SECTION 8.2    Instructions of the Company......................................23
SECTION 8.3    Reliance by Collateral Agent.....................................23
SECTION 8.4    Rights in Other Capacities.......................................23
SECTION 8.5    Non-Reliance on Collateral Agent.................................24
SECTION 8.6    Compensation and Indemnity.......................................24
SECTION 8.7    Failure to Act...................................................24
SECTION 8.8    Resignation of Collateral Agent..................................25
</TABLE>

                                       i
<PAGE>
                                TABLE OF CONTENTS

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SECTION 8.9    Right to Appoint Agent or Advisor................................26
SECTION 8.10   Survival.........................................................26
SECTION 8.11   Exculpation......................................................26

                                   ARTICLE IX
                                    AMENDMENT

SECTION 9.1    Amendment without Consent of Holders.............................26
SECTION 9.2    Amendment with Consent of Holders................................27
SECTION 9.3    Execution of Amendments..........................................27
SECTION 9.4    Effect of Amendments.............................................27
SECTION 9.5    Reference to Amendments..........................................28

                                    ARTICLE X
                                  MISCELLANEOUS

SECTION 10.1   No Waiver........................................................28
SECTION 10.2   Governing Law....................................................28
SECTION 10.3   Notices..........................................................29
SECTION 10.4   Successors and Assigns...........................................29
SECTION 10.5   Counterparts.....................................................29
SECTION 10.6   Severability.....................................................29
SECTION 10.7   Expenses, Etc....................................................29
SECTION 10.8   Security Interest Absolute.......................................30
</TABLE>

                                       ii
<PAGE>

                            FORM OF PLEDGE AGREEMENT

      FORM OF PLEDGE AGREEMENT, dated as of May [__], 2003 (this "Agreement"),
by and among AmerUs Group Co., an Iowa corporation (the "Company"), as pledgee,
BNY Midwest Trust Company, an Illinois Trust Company, not individually but
solely as collateral agent (in such capacity, together with its successors in
such capacity, the "Collateral Agent"), as custodial agent (in such capacity,
together with its successors in such capacity, the "Custodial Agent") and as a
"securities intermediary" as defined in Section 8-102(a)(14) of the Code (as
defined herein) (in such capacity, together with its successors in such
capacity, the "Securities Intermediary"), and Wachovia Bank, National
Association, a [__________________], not individually but solely as purchase
contract agent and as attorney-in-fact of the Holders (as defined in the
Purchase Contract Agreement) from time to time of the Securities (as hereinafter
defined) (in such capacity, together with its successors in such capacity, the
"Purchase Contract Agent") under the Purchase Contract Agreement (as hereinafter
defined).

                                    RECITALS

      The Company and the Purchase Contract Agent are parties to the Purchase
Contract Agreement, dated as of the date hereof (as modified and supplemented
and in effect from time to time, the "Purchase Contract Agreement"), pursuant to
which there may be issued up to [__________] new securities (the "Securities")
of the Company. Terms not otherwise defined herein are used herein with the
meaning ascribed to them in the Purchase Contract Agreement.

      The Securities will initially consist of [_________] units with a stated
amount, per Security, equal to $25 (the "Stated Amount"). The Securities will
initially consist of [________] Income PRIDES and 0 Growth PRIDES. Each Income
PRIDES will initially be comprised of (a) a stock purchase contract (as modified
and supplemented and in effect from time to time, a "Purchase Contract") under
which (i) the Holder will purchase from the Company not later than August 16,
2006 (the "Purchase Contract Settlement Date"), for $25 in cash, a number of
newly issued shares of common stock, without par value, of the Company ("Common
Stock") equal to the applicable Settlement Rate and (ii) the Company will pay
certain Contract Adjustment Payments to the Holders as provided in the Purchase
Contract Agreement, and (b) either (A) prior to the Purchase Contract Settlement
Date so long as no Tax Event Redemption has occurred, (i) beneficial ownership
of a Senior Note initially due May 16, 2008 of the Company (the "Debt
Securities"), having a principal amount of $25, or (ii) following a successful
remarketing of the Debt Securities on the Remarketing Date, the Applicable
Ownership Interest in the Remarketing Treasury Portfolio, or (B) upon the
occurrence of a Tax Event Redemption prior to the Purchase Contract Settlement
Date, the Applicable Ownership Interest in the Tax Event Treasury Portfolio.

            Each Growth PRIDES will initially be comprised of (a) a Purchase
Contract under which (i) the Holder will purchase from the Company not later
than the Purchase Contract Settlement Date, for $25 in cash, a number of newly
issued shares of Common Stock equal to the applicable Settlement Rate and (ii)
the Company will pay certain Contract Adjustment Payments to the Holders as
provided in the Purchase Contract Agreement, and (b) a 1/40, or 2.5% undivided
beneficial ownership interest in a zero-coupon U.S. Treasury security having a
principal amount at maturity equal to $1,000 and maturing on August 15, 2006
(CUSIP
<PAGE>
No.[__________]) ("Treasury Security"). Pursuant to the terms of the
Underwriting Agreement, the Company may issue up to [________] additional Income
PRIDES and, if the Company issues such additional Income PRIDES, the related
Debt Securities will be pledged hereunder.

            Pursuant to the terms of the Indenture (as defined below), the
Company will issue the Debt Securities in an aggregate principal amount equal to
the aggregate Stated Amount of all Income PRIDES.

            Pursuant to the terms of the Purchase Contract Agreement and the
Purchase Contracts, the Holders, from time to time, of the Securities have
irrevocably authorized the Purchase Contract Agent, as attorney-in-fact of such
Holders, among other things, to execute and deliver this Agreement on behalf of
and in the name of such Holders and to grant the pledge provided hereby of the
Debt Securities, any Applicable Ownership Interest in a Treasury Portfolio and
any Treasury Securities to secure each Holder's obligations under the related
Purchase Contract, as provided herein and subject to the terms hereof. Upon such
pledge, the Debt Securities will be beneficially owned by the Holders but will
be owned of record by the Purchase Contract Agent subject to the Pledge
hereunder, and the Treasury Securities (and the Applicable Ownership Interest in
the appropriate Treasury Portfolio) will be beneficially owned by the Holders
but will be held in book-entry form by the Securities Intermediary subject to
the Pledge hereunder.

            Accordingly, the Company, the Collateral Agent, the Securities
Intermediary, the Custodial Agent and the Purchase Contract Agent, on its own
behalf and as attorney-in-fact of the Holders from time to time of the
Securities, agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

            For all purposes of this Agreement, except as otherwise expressly
provided or unless the context otherwise requires:

            (a) the terms defined in this Article have the meanings assigned to
      them in this Article and include the plural as well as the singular;

            (b) the words "herein," "hereof" and "hereunder" and other words of
      similar import refer to this Agreement as a whole and not to any
      particular Article, Section or other subdivision;

            (c) terms not otherwise defined herein are used herein with the
      meaning ascribed to them in the Purchase Contract Agreement.

            "Agreement" means this instrument as originally executed or as it
may from time to time be supplemented or amended by one or more agreements
supplemental hereto entered into pursuant to the applicable provisions hereof.

            "Bankruptcy Code" means title 11 of the United States Code, or any
other law of the United States that from time to time provides a uniform system
of bankruptcy laws.

                                      -2-
<PAGE>
            "Business Day" means any day other than a Saturday, a Sunday or any
other day on which banking institutions in The City of New York (in the State of
New York) are permitted or required by any applicable law to close.

            "Cash" means any coin or currency of the United States as at the
time shall be legal tender for payment of public and private debts.

            "Code" has the meaning specified in Section 6.1 hereof.

            "Collateral" has the meaning specified in Section 2.1 hereof.

            "Collateral Account" means the securities account (number
[__________]) maintained at [_____________] in the name "First Union National
Bank, as Purchase Contract Agent on behalf of the holders of Securities subject
to the security interest of [_______________] as Collateral Agent under the
Pledge Agreement, for the benefit of AmerUs Group Co., as pledgee" and any
successor account.

            "Collateral Agent" has the meaning specified in the first paragraph
of this Agreement.

            "Common Stock" has the meaning specified in the Recitals.

            "Company" means the Person named as the "Company" in the first
paragraph of this Agreement until a successor shall have become such, and
thereafter "Company" shall mean such successor.

            "Custodial Agent" has the meaning specified in the first paragraph
of this Agreement.

            "Debt Security" and "Debt Securities" have the respective meanings
specified in the Recitals.

            "Indenture" means the Indenture, dated as of June 16, 1998, between
the Company and the Indenture Trustee pursuant to which the Debt Securities are
to be issued, as originally executed and delivered and as it may from time to
time be supplemented or amended by one or more indentures supplemental thereto
entered into pursuant to the applicable provisions thereof and shall include the
terms of a particular series of securities established as contemplated by
Section 3.01 thereof.

            "Indenture Trustee" means First Union National Bank, as trustee
under the Indenture until a successor is appointed thereunder, and thereafter
means such successor trustee.

            "Intermediary" means any entity that in the ordinary course of its
business maintains securities accounts for others and is acting in that
capacity.

            "Permitted Investments" means any one of the following which shall
mature not later than the next succeeding Business Day: (i) any evidence of
indebtedness with an original maturity of 365 days or less issued, or directly
and fully guaranteed or insured, by the United

                                      -3-
<PAGE>
States of America or any agency or instrumentality thereof (provided that the
full faith and credit of the United States of America is pledged in support
thereof or such indebtedness constitutes a general obligation of it); (ii)
deposits, certificates of deposit or acceptances with an original maturity of
365 days or less of any institution which is a member of the Federal Reserve
System having combined capital and surplus and undivided profits of not less
than U.S. $200 million at the time of deposit; (iii) investments with an
original maturity of 365 days or less of any Person that is fully and
unconditionally guaranteed by a bank referred to in clause (ii) hereof; (iv)
investments in commercial paper, other than commercial paper issued by the
Company or its Affiliates, of any corporation incorporated under the laws of the
United States or any State thereof, which commercial paper has a rating at the
time of purchase at least equal to "A-1" by Standard & Poor's Ratings Service, a
Division of McGraw-Hill Companies, Inc. ("S&P"), or at least equal to "P-1" by
Moody's Investors Service, Inc. ("Moody's"); and (v) investments in money market
funds registered under the Investment Company Act of 1940, as amended, rated in
the highest applicable rating category by S&P or Moody's.

            "Person" means any individual, corporation, limited liability
company, partnership, joint venture, association, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

            "Pledge" has the meaning specified in Section 2.1 hereof.

            "Pledged Applicable Ownership Interest in a Treasury Portfolio" has
the meaning specified in Section 2.1 hereof.

            "Pledged Debt Securities" has the meaning specified in Section 2.1
hereof.

            "Pledged Treasury Securities" has the meaning specified in Section
2.1 hereof.

            "Proceeds" means all interest, dividends, cash, instruments,
securities, financial assets (as defined in Section 8-102(a)(9) of the Code) and
other property from time to time received, receivable or otherwise distributed
upon the sale, exchange, collection or disposition of the Collateral or any
proceeds thereof.

            "Purchase Contract" has the meaning specified in the Recitals.

            "Purchase Contract Agent" has the meaning specified in the first
paragraph of this Agreement.

            "Purchase Contract Agreement" has the meaning specified in the
Recitals.

            "Reset Date" means three Business Days after any Remarketing Date on
which the Debt Securities are successfully remarketed pursuant to the
Remarketing Agreement and/or the Purchase Contract Agreeement.

            "Securities" has the meaning specified in the Recitals.

            "Securities Intermediary" has the meaning specified in the first
paragraph of this Agreement.

                                      -4-
<PAGE>
            "Security Entitlement" has the meaning set forth in Section
8-102(a)(17) of the Code.

            "Separate Debt Securities" means any Debt Securities that are not
Pledged Debt Securities.

            "Stated Amount" has the meaning specified in the Recitals.

            "TRADES" means the Treasury/Reserve Automated Debt Entry System
maintained by the Federal Reserve Bank of New York pursuant to the TRADES
Regulations.

            "TRADES Regulations" means the regulations of the United States
Department of the Treasury, published at 31 C.F.R. Part 357, as amended from
time to time. Unless otherwise defined herein, all terms defined in the TRADES
Regulations are used herein as therein defined.

            "Transfer" means, with respect to the Collateral and in accordance
with the instructions of the Collateral Agent, the Purchase Contract Agent or
the Holder, as applicable:

            (i) except as otherwise provided in Section 2.1 hereof, in the case
of Collateral consisting of securities which cannot be delivered by book-entry
or which the parties agree are to be delivered in physical form, delivery in
appropriate physical form to the recipient accompanied by any duly executed
instruments of transfer, assignments in blank, transfer tax stamps and any other
documents necessary to constitute a legally valid transfer to the recipient; and

            (ii) in the case of Collateral consisting of securities maintained
in book-entry form, by causing a "securities intermediary" (as defined in
Section 8-102(a)(14) of the Code) to (i) credit a Security Entitlement with
respect to such securities to a "securities account" (as defined in Section
8-501(a) of the Code) maintained by or on behalf of the recipient and (ii) to
issue a confirmation to the recipient with respect to such credit. In the case
of Collateral to be delivered to the Collateral Agent, the securities
intermediary shall be the Securities Intermediary and the securities account
shall be the Collateral Account.

            "Treasury Security" has the meaning specified in the Recitals.

            "Value" with respect to any item of Collateral on any date means: as
to (i) Debt Securities, the aggregate principal amount thereof, (ii) Cash, the
face amount thereof and (iii) Treasury Securities, the aggregate principal
amount thereof at maturity; provided, however, that in the case of a successful
remarketing of the Debt Securities on the third Business Day immediately
preceding the Reset Date, Value means the Remarketing Treasury Portfolio
Purchase Price.

                                      -5-
<PAGE>
                                   ARTICLE II

                         PLEDGE; CONTROL AND PERFECTION

SECTION 2.1 The Pledge.

            The Holders from time to time acting through the Purchase Contract
Agent, as their attorney-in-fact, and the Purchase Contract Agent, as such
attorney-in-fact, hereby pledge and grant to the Collateral Agent, for the
benefit of the Company, as collateral security for the performance when due by
such Holders of their respective obligations under the related Purchase
Contracts, a security interest in all of the right, title and interest of such
Holders and the Purchase Contract Agent (a) in the Debt Securities and Treasury
Securities constituting a part of the Securities and any Treasury Securities
delivered in exchange for any Debt Securities, and any Debt Securities delivered
in exchange for any Treasury Securities, in accordance with Article IV hereof,
in each case that have been Transferred to or received by the Collateral Agent
and not released by the Collateral Agent to such Holders or the Purchase
Contract Agent under the provisions of this Agreement; (b) in payments made by
Holders pursuant to Section 4.4 hereof; (c) in the Collateral Account and all
securities, financial assets, Cash and other property credited thereto and all
Security Entitlements related thereto; (d) in the Applicable Ownership Interest
in the Treasury Portfolio purchased on behalf of the Holders of Income PRIDES by
the Collateral Agent upon the occurrence of (i) a Tax Event Redemption as
provided in Section 6.2 hereof or (ii) a successful remarketing of the Debt
Securities and (e) all Proceeds of the foregoing (all of the foregoing,
collectively, the "Collateral"). Prior to or concurrently with the execution and
delivery of this Agreement, the Purchase Contract Agent, on behalf of the
initial Holders of the Securities, shall cause the Debt Securities comprising a
part of the Income PRIDES to be Transferred to the Collateral Agent for the
benefit of the Company. Such Debt Securities shall be Transferred by physically
delivering such Debt Securities to the Collateral Agent endorsed in blank.

            Treasury Securities and any Treasury Portfolio, as applicable, shall
be Transferred to the Collateral Account maintained by the Collateral Agent at
the Securities Intermediary by book-entry transfer to the Collateral Account in
accordance with the TRADES Regulations and other applicable law and by the
notation by the Securities Intermediary on its books that a Security Entitlement
with respect to such Treasury Securities or Treasury Portfolio has been credited
to the Collateral Account. For purposes of perfecting the Pledge under
applicable law, including, to the extent applicable, the TRADES Regulations or
the Uniform Commercial Code as adopted and in effect in any applicable
jurisdiction, the Collateral Agent shall be the agent of the Company as provided
herein. The pledge provided in this Section 2.1 is herein referred to as the
"Pledge" and the Debt Securities, Treasury Securities or the Applicable
Ownership Interest in any Treasury Portfolio subject to the Pledge, excluding
any Debt Securities or Treasury Securities or interest in any Treasury Portfolio
released from the Pledge as provided in Article IV hereof, are hereinafter
referred to as "Pledged Debt Securities," the "Pledged Treasury Securities," or
"Pledged Applicable Ownership Interest in a Treasury Portfolio," respectively,
and, collectively, the "Pledged Securities." Subject to the Pledge and the
provisions of Section 2.2 hereof, the Holders from time to time shall have full
beneficial ownership of the Collateral. The Collateral Agent shall have the
right to have the Debt Securities or any other Securities held

                                      -6-
<PAGE>
in physical form reregistered in its name or in the name of its agent or the
Securities Intermediary and credited to the Collateral Account.

            Except as may be required in order to release Debt Securities (or,
if (i) a Tax Event Redemption or (ii) a successful remarking of the Debt
Securities, as the case may be, has occurred, the Applicable Ownership Interest
in the appropriate Treasury Portfolio) or Treasury Securities in connection with
a Holder's election to convert its investment from Income PRIDES to Growth
PRIDES, or from Growth PRIDES to Income PRIDES, as the case may be, or except as
otherwise required to release Pledged Securities as specified herein, neither
the Collateral Agent nor the Securities Intermediary shall relinquish physical
possession of any certificate evidencing Debt Securities (or, if (i) a Tax Event
Redemption or (ii) a successful remarking of the Debt Securities, as the case
may be, has occurred, the Applicable Ownership Interest in the appropriate
Treasury Portfolio) or Treasury Securities prior to the termination of this
Agreement. If it becomes necessary for the Collateral Agent to relinquish
physical possession of a certificate in order to release a portion of the Debt
Securities evidenced thereby from the Pledge, the Collateral Agent shall use its
best efforts to obtain physical possession of a replacement certificate
evidencing any Debt Securities remaining subject to the Pledge hereunder
registered to it or endorsed in blank within ten days of the date it
relinquished possession. The Collateral Agent shall promptly notify the Company
of its failure to obtain possession of any such replacement certificate as
required hereby.

SECTION 2.2 Control and Perfection.

            (a) In connection with the Pledge granted in Section 2.1, and
subject to the other provisions of this Agreement, the Holders from time to time
acting through the Purchase Contract Agent, as their attorney-in-fact, hereby
authorize and direct the Securities Intermediary (without the necessity of
obtaining the further consent of the Purchase Contract Agent or any of the
Holders), and the Securities Intermediary agrees, to comply with and follow any
instructions and "entitlement orders" (as defined in Section 8-102(a)(8) of the
Code) that the Collateral Agent on behalf of the Company may give in writing
with respect to the Collateral Account, the Collateral credited thereto and any
Security Entitlements with respect to any thereof. Such instructions and
entitlement orders may, without limitation, direct the Securities Intermediary
to transfer, redeem, sell, liquidate, assign, deliver or otherwise dispose of
the Debt Securities, the Treasury Securities, any Treasury Portfolio and any
Security Entitlements with respect thereto and to pay and deliver any income,
proceeds or other funds derived therefrom to the Company. The Purchase Contract
Agent and the Holders from time to time, acting through the Purchase Contract
Agent, each hereby further authorize and direct the Collateral Agent, as agent
of the Company, to itself issue instructions and entitlement orders, and to
otherwise take action, with respect to the Collateral Account, the Collateral
credited thereto and any Security Entitlements with respect thereto, pursuant to
the terms and provisions hereof, all without the necessity of obtaining the
further consent of the Purchase Contract Agent or any of the Holders. The
Collateral Agent shall be the agent of the Company and shall act as directed in
writing by the Company. Without limiting the generality of the foregoing, the
Collateral Agent shall issue entitlement orders to the Securities Intermediary
when and as directed by the Company.

                                      -7-
<PAGE>
            (b) The Securities Intermediary hereby confirms and agrees that: (i)
all securities or other property underlying any financial assets credited to the
Collateral Account shall be registered in the name of the Securities
Intermediary, endorsed to the Securities Intermediary or in blank or credited to
another collateral account maintained in the name of the Securities Intermediary
and in no case will any financial asset credited to the Collateral Account be
registered in the name of the Purchase Contract Agent, the Company or any
Holder, payable to the order of, or specially indorsed to, the Purchase Contract
Agent, the Collateral Agent, the Company or any Holder, except to the extent the
foregoing have been specially endorsed to the Securities Intermediary or in
blank; (ii) all property delivered to the Securities Intermediary pursuant to
this Pledge Agreement (including, without limitation, any Debt Securities, the
Applicable Ownership Interest in any Treasury Portfolio or any Treasury
Securities) will be promptly credited to the Collateral Account; (iii) the
Collateral Account is an account to which financial assets are or may be
credited, and the Securities Intermediary shall, subject to the terms of this
Agreement, treat the Purchase Contract Agent as the "entitlement holder" (as
defined in Section 8-102(a)(7) of the Code) with respect to the Collateral
Account; (iv) the Securities Intermediary has not entered into, and until the
termination of this Agreement will not enter into, any agreement with any other
Person relating to the Collateral Account and/or any financial assets credited
thereto pursuant to which it has agreed to comply with "entitlement orders" (as
defined in Section 8-102(a)(8) of the Code) of such other Person; and (v) the
Securities Intermediary has not entered into, and until the termination of this
Agreement will not enter into, any agreement with the Company, the Collateral
Agent, the Purchase Contract Agent or the Holders of the Securities purporting
to limit or condition the obligation of the Securities Intermediary to comply
with entitlement orders as set forth in this Section 2.2 hereof.

            (c) The Securities Intermediary hereby agrees that each item of
property (whether investment property, financial asset, security, instrument or
cash) credited to the Collateral Account shall be treated as a "financial asset"
within the meaning of Section 8-102(a)(9) of the Code.

            (d) In the event of any conflict between this Agreement (or any
portion hereof) and any other agreement now existing or hereafter entered into,
the terms of this Agreement shall prevail.

            (e) The Purchase Contract Agent hereby irrevocably constitutes and
appoints the Collateral Agent and the Company, and each of them severally, with
full power of substitution, as the Purchase Contract Agent's attorney-in-fact to
take on behalf of, and in the name, place and stead of the Purchase Contract
Agent and the Holders, any action necessary or desirable to perfect and to keep
perfected the security interest in the Collateral referred to in Section 2.1.
The grant of such power-of-attorney shall not be deemed to require of the
Collateral Agent any specific duties or obligations not otherwise assumed by the
Collateral Agent hereunder.

                                      -8-
<PAGE>
                                  ARTICLE III

                       DISTRIBUTIONS ON PLEDGED COLLATERAL

            So long as the Purchase Contract Agent is the registered owner of
the Pledged Debt Securities, it shall receive all payments thereon. If the
Pledged Debt Securities are reregistered, such that the Collateral Agent becomes
the registered holder, all payments of principal or interest on such Pledged
Debt Securities, together with any payments of principal or interest or cash
distributions in respect of any other Pledged Securities received by the
Collateral Agent that are properly payable hereunder shall be paid by the
Collateral Agent by wire transfer in same day funds:

            (a) in the case of (A) payment of interest with respect to the
Pledged Debt Securities or cash distributions on the appropriate Pledged
Applicable Ownership Interest in a Treasury Portfolio (as specified in clauses
(1)(ii), (1)(iii) or (2)(ii) of the definition of the term Applicable Ownership
Interest), as the case may be, and (B) any payments of principal with respect to
any Debt Securities or the appropriate Applicable Ownership Interest (as
specified in clauses (1)(i) or (2)(i) of the definition of such term) in a
Treasury Portfolio, as the case may be, that have been released from the Pledge
pursuant to Section 4.3 hereof, to the Purchase Contract Agent, for the benefit
of the relevant Holders of Income PRIDES, to the account designated by the
Purchase Contract Agent for such purpose, no later than 2:00 p.m., New York City
time, on the Business Day such payment is received by the Collateral Agent
(provided that in the event such payment is received by the Collateral Agent on
a day that is not a Business Day or after 12:30 p.m., New York City time, on a
Business Day, then such payment shall be made no later than 10:30 a.m., New York
City time, on the next succeeding Business Day);

            (b) in the case of any principal payments with respect to any
Treasury Securities that have been released from the Pledge pursuant to Section
4.3 hereof, to the Holders of the Growth PRIDES to the accounts designated by
them in writing to the Collateral Agent for such purpose no later than 2:00
p.m., New York City time, on the Business Day such payment is received by the
Collateral Agent (provided that in the event such payment is received by the
Collateral Agent on a day that is not a Business Day or after 12:30 p.m., New
York City time, on a Business Day, then such payment shall be made no later than
10:30 a.m., New York City time, on the next succeeding Business Day); and

            (c) in the case of payments of the principal of any Pledged Debt
Securities or on the appropriate Pledged Applicable Ownership Interest in a
Treasury Portfolio (as specified in clauses (1)(i) or (2)(i) of the definition
of the term Applicable Ownership Interest), as the case may be, or the principal
of any Pledged Treasury Securities, to the Company on the Purchase Contract
Settlement Date in accordance with the procedure set forth in Section 4.6(a) or
4.6(b) hereof, in full satisfaction of the respective obligations of the Holders
under the related Purchase Contracts.

All payments received by the Purchase Contract Agent as provided herein shall be
applied by the Purchase Contract Agent pursuant to the provisions of the
Purchase Contract Agreement. If, notwithstanding the foregoing, the Purchase
Contract Agent or a Holder of Income PRIDES shall receive any payments of
principal on account of any Debt Security or, if applicable, the

                                      -9-
<PAGE>
Applicable Ownership Interest (as specified in clauses (1)(i) or (2)(i) of the
definition of such term) in the appropriate Treasury Portfolio that, at the time
of such payment, is a Pledged Debt Security or the Pledged Applicable Ownership
Interest in a Treasury Portfolio, as the case may be, or the Purchase Contract
Agent or a Holder of Growth PRIDES shall receive any payments of principal on
account of any Treasury Securities that, at the time of such payment, are
Pledged Treasury Securities, the Purchase Contract Agent or such Holder, as the
case may be, shall transfer the Proceeds of such payment of principal on such
Pledged Debt Security, Pledged Applicable Ownership Interest in a Treasury
Portfolio or Pledged Treasury Securities, as the case may be, to the Collateral
Agent and the Collateral Agent shall hold such Proceeds for the benefit of the
Company as Collateral for the performance when due by such Holder of its
obligations under the related Purchase Contracts.

                                   ARTICLE IV

             SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF DEBT
                                   SECURITIES

SECTION 4.1 Substitution for Debt Securities and the Creation of Growth PRIDES.

            A Holder of an Income PRIDES may create or recreate a Growth PRIDES
and separate the Debt Securities or the appropriate Applicable Ownership
Interest in a Treasury Portfolio, as applicable, from the related Purchase
Contract in respect of such Income PRIDES by substituting Treasury Securities
for all, but not less than all, of the Debt Securities or Applicable Ownership
Interest in the appropriate Treasury Portfolio that form a part of such Income
PRIDES in accordance with this Section 4.1 and Section 3.13 of the Purchase
Contract Agreement; provided, however, that if a Treasury Portfolio has not
replaced the Debt Securities as a component of Income PRIDES as a result of a
successful remarketing or a Tax Event Redemption, such Collateral Substitutions
may be made only on or prior to the fifth Business Day immediately preceding the
Purchase Contract Settlement Date; if a Treasury Portfolio has replaced Debt
Securities as a component of Income PRIDES as a result of a successful
remarketing of the Debt Securities or a Tax Event Redemption, such Collateral
Substitutions may be made only on or prior to the second Business Day
immediately preceding the Purchase Contract Settlement Date. Holders may make
Collateral Substitutions and establish Growth PRIDES (i) only in integral
multiples of 40 Income PRIDES if only Debt Securities are being substituted by
Treasury Securities, or (ii) only in integral multiples of [_____] Income PRIDES
(or such other number of Income PRIDES as may be determined by the Reset Agent
upon a successful remarketing of the Debt Securities if the Reset Date is not a
regular quarterly Interest Payment Date) if the appropriate Applicable Ownership
Interests in the Treasury Portfolio are being substituted for Treasury
Securities. For example, to create 40 Growth PRIDES (if a Tax Event Redemption
has not occurred and Debt Securities remain components of Income PRIDES), or
[_____] Growth PRIDES (or such other number of Growth PRIDES as may be
determined by the Reset Agent upon a successful remarketing of the Debt
Securities if the Reset Date is not a regular quarterly Interest Payment Date)
(if a Tax Event Redemption has occurred or a Remarketing Treasury Portfolio has
replaced Debt Securities as components of Income PRIDES as a result of a
successful remarketing of the Debt Securities), the Income PRIDES Holder shall

                                      -10-
<PAGE>
            (a) if a Treasury Portfolio has not replaced any Debt Securities as
      a component of Income PRIDES as a result of a successful remarketing or a
      Tax Event Redemption, on or prior to the fifth Business Day preceding the
      Purchase Contract Settlement Date, deposit with the Collateral Agent a
      Treasury Security having a principal amount at maturity of $1,000; or

            (b) if a Treasury Portfolio has replaced the Debt Securities as a
      component of Income PRIDES as a result of a successful remarketing of the
      Debt Securities or a Tax Event Redemption, on or prior to the second
      Business Day immediately preceding the Purchase Contract Settlement Date,
      deposit with the Collateral Agent Treasury Securities having an aggregate
      principal amount at maturity of [_______]; and

            (c) in each case, transfer and surrender the related 40 Income
      PRIDES, or, in the event a Treasury Portfolio is a component of Income
      PRIDES, [______] Income PRIDES (or such other number of Income PRIDES as
      may be determined by the Reset Agent upon a successful remarketing of the
      Debt Securities if the Reset Date is not a regular quarterly Interest
      Payment Date), to the Purchase Contract Agent accompanied by a notice to
      the Purchase Contract Agent, substantially in the form of Exhibit B
      hereto, stating that the Holder has transferred the relevant amount of
      Treasury Securities to the Collateral Agent and requesting that the
      Purchase Contract Agent instruct the Collateral Agent to release the
      applicable Debt Securities or the appropriate Applicable Ownership
      Interest in the Treasury Portfolio, as the case may be, underlying such
      Income PRIDES, whereupon the Purchase Contract Agent shall promptly give
      such instruction to the Collateral Agent, substantially in the form of
      Exhibit A hereto.

            Upon receipt of the Treasury Securities described in clause (a) or
(b) above and the instructions described in clause (c) above from the Purchase
Contract Agent, the Collateral Agent shall release the Pledged Debt Securities
or the appropriate Pledged Applicable Ownership Interest in a Treasury
Portfolio, as the case may be, and shall promptly Transfer such Pledged Debt
Securities or the appropriate Pledged Applicable Ownership Interest in a
Treasury Portfolio, as the case may be, free and clear of the lien, pledge or
security interest created hereby, to the Purchase Contract Agent.

SECTION 4.2 Substitution for Treasury Securities and the Creation of Income
PRIDES.

            A Holder of a Growth PRIDES may create or recreate Income PRIDES by
depositing with the Collateral Agent Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, having an
aggregate principal amount equal to the aggregate principal amount at maturity
of, and in substitution for all, but not less than all, of the Treasury
Securities comprising part of the Growth PRIDES in accordance with this Section
4.2 and Section 3.14 of the Purchase Contract Agreement; provided, however, that
if a Treasury Portfolio has not replaced the Debt Securities as a component of
Income PRIDES as a result of a successful remarketing or a Tax Event Redemption,
such Collateral Substitutions may be made only on or prior to the fifth Business
Day immediately preceding the Purchase Contract Settlement Date; and if a
Treasury Portfolio has replaced the Debt Securities as a component of Income
PRIDES as a result of a successful remarketing of the Debt Securities or a Tax
Event Redemption, such Collateral Substitutions may be made only on or prior to
the second Business

                                      -11-
<PAGE>
Day immediately preceding the Purchase Contract Settlement Date. Holders of
Growth PRIDES may make such Collateral Substitutions and establish Income PRIDES
(i) only in integral multiples of 40 Growth PRIDES if Treasury Securities are
being replaced by Debt Securities, or (ii) only in integral multiples of
[______] Growth PRIDES (or such other number of Growth PRIDES as may be
determined by the Reset Agent upon a successful remarketing of the Debt
Securities if the Reset Date is not a regular quarterly Interest Payment Date)
if any Treasury Security is being replaced by the Applicable Ownership Interest
in the Treasury Portfolio. To create 40 Income PRIDES (if a Tax Event Redemption
has not occurred and the Debt Securities remain components of Income PRIDES), or
[_____] Income PRIDES (or such other number of Income PRIDES as may be
determined by the Reset Agent upon a successful remarketing of the Debt
Securities if the Reset Date is not a regular quarterly Interest Payment Date)
(if a Tax Event Redemption has occurred or a Remarketing Treasury Portfolio has
replaced the Debt Securities as a result of a successful remarketing of the Debt
Securities), the Growth PRIDES Holder shall

            (a) if a Treasury Portfolio has not replaced the Debt Securities as
      a component of Income PRIDES as a result of a successful remarketing or a
      Tax Event Redemption on or prior to the fifth Business Day preceding the
      Purchase Contract Settlement Date, deposit with the Collateral Agent
      $1,000 in aggregate principal amount of Debt Securities; or

            (b) if a Treasury Portfolio has replaced the Debt Securities as a
      component of Income PRIDES as a result of a successful remarketing of the
      Debt Securities or a Tax Event Redemption on or prior to the second
      Business Day immediately preceding the Purchase Contract Settlement Date,
      deposit with the Collateral Agent the Applicable Ownership Interest in the
      appropriate Treasury Portfolio having an aggregate principal amount at
      maturity of [_____]; or

            (c) in each case, transfer and surrender the related 40 Growth
      PRIDES, or in the event the Treasury Portfolio is a component of Income
      PRIDES, [______] Growth PRIDES (or such other number of Growth PRIDES as
      may be determined by the Reset Agent upon a successful remarketing of the
      Debt Securities if the Reset Date is not a regular quarterly Interest
      Payment Date), to the Purchase Contract Agent accompanied by a notice to
      the Purchase Contract Agent, substantially in the form of Exhibit B
      hereto, stating that the Holder has transferred the relevant amount of
      Debt Securities or the appropriate Applicable Ownership Interest in the
      Treasury Portfolio, as the case may be, to the Collateral Agent and
      requesting that the Purchase Contract Agent instruct the Collateral Agent
      to release the Pledged Treasury Securities underlying such Growth PRIDES,
      whereupon the Purchase Contract Agent shall promptly give such instruction
      to the Collateral Agent, substantially in the form of Exhibit A hereto.

            Upon receipt of the Debt Securities or the appropriate Applicable
Ownership Interest in the applicable Treasury Portfolio, as the case may be,
described in clause (a) or (b) above and the instructions described in clause
(c) above, from the Purchase Contract Agent, the Collateral Agent shall release
the related Pledged Treasury Securities and shall promptly Transfer such Pledged
Treasury Securities, free and clear of the lien, pledge or security interest
created hereby, to the Purchase Contract Agent.

                                      -12-
<PAGE>
SECTION 4.3 Termination Event.

            Upon receipt by the Collateral Agent of written notice from the
Company or the Purchase Contract Agent that there has occurred a Termination
Event, the Collateral Agent shall release all Collateral from the Pledge and
shall promptly Transfer any Pledged Debt Securities (or, if (i) a Tax Event
Redemption or (ii) a successful remarketing of the Debt Securities, as the case
may be, has occurred, the Pledged Applicable Ownership Interest in a Treasury
Portfolio) and Pledged Treasury Securities to the Purchase Contract Agent for
the benefit of the Holders of the Income PRIDES and the Growth PRIDES,
respectively, free and clear of any lien, pledge or security interest or other
interest created hereby.

            If such Termination Event shall result from the Company's becoming a
debtor under the Bankruptcy Code, and if the Collateral Agent shall for any
reason fail promptly to effectuate the release and Transfer of all Pledged Debt
Securities, the Pledged Applicable Ownership Interest in a Treasury Portfolio or
the Pledged Treasury Securities, as the case may be, as provided by this Section
4.3, any Holder may, and the Purchase Contract Agent shall, upon receipt from
the Holders of reasonable security or indemnity against the costs, expenses and
liabilities which might be incurred by the Purchase Contract Agent in compliance
with this paragraph, (i) use its reasonable best efforts to obtain an opinion of
a nationally recognized law firm reasonably acceptable to the Collateral Agent
to the effect that, as a result of the Company being the debtor in such a
bankruptcy case, the Collateral Agent will not be prohibited from releasing or
Transferring the Collateral as provided in this Section 4.3, and shall deliver
such opinion to the Collateral Agent within ten days after the occurrence of
such Termination Event, and if (y) any such Holder or the Purchase Contract
Agent shall be unable to obtain such opinion within ten days after the
occurrence of such Termination Event or (z) the Collateral Agent shall continue,
after delivery of such opinion, to refuse to effectuate the release and Transfer
of all Pledged Debt Securities, the Pledged Applicable Ownership Interest in a
Treasury Portfolio or the Pledged Treasury Securities, as the case may be, as
provided in this Section 4.3, then any Holder may, and the Purchase Contract
Agent shall, within 15 days after the occurrence of such Termination Event
commence an action or proceeding in the court with jurisdiction of the Company's
case under the Bankruptcy Code seeking an order requiring the Collateral Agent
to effectuate the release and transfer of all Pledged Debt Securities, the
Pledged Applicable Ownership Interest in a Treasury Portfolio or the Pledged
Treasury Securities, as the case may be, as provided by this Section 4.3 or (ii)
commence an action or proceeding in the court with jurisdiction of the Company's
case under the Bankruptcy Code like that described in subsection (i)(z) hereof
within ten days after the occurrence of such Termination Event.

                                      -13-
<PAGE>
SECTION 4.4 Cash Settlement.

            (a) Upon receipt by the Collateral Agent of (i) a notice from the
Purchase Contract Agent that a Holder of an Income PRIDES or a Growth PRIDES has
elected, in accordance with the procedures specified in Section 5.4(a)(i) or
(d)(i) of the Purchase Contract Agreement, respectively, to settle its Purchase
Contract with Cash and (ii) payment by such Holder of the amount required to
settle the Purchase Contract prior to 11:00 a.m., New York City time, on the
Business Day immediately preceding the Purchase Contract Settlement Date in
lawful money of the United States by certified or cashiers' check or wire
transfer in immediately available funds payable to or upon the order of the
Company, then the Collateral Agent shall promptly invest any Cash received from
a Holder in connection with a Cash Settlement in Permitted Investments. Upon
receipt of the proceeds upon the maturity of the Permitted Investments on the
Purchase Contract Settlement Date, the Collateral Agent shall pay the portion of
such proceeds and deliver any certified or cashiers' checks received, in an
aggregate amount equal to the Purchase Price, to the Company on the Purchase
Contract Settlement Date, and shall distribute any funds in respect of the
interest earned from the Permitted Investments to the Purchase Contract Agent
for payment to the relevant Holder.

            (b) If a Holder of an Income PRIDES (unless a Treasury Portfolio has
replaced the relevant Debt Security) fails to notify the Purchase Contract Agent
of its intention to make a Cash Settlement in accordance with Section 5.4(a)(i)
of the Purchase Contract Agreement, such failure shall constitute a default
under the related Purchase Contract and hereunder, and the Holder shall be
deemed to have consented to the disposition of the Pledged Debt Securities
pursuant to the remarketing as described in Section 5.4(b) of the Purchase
Contract Agreement, which is incorporated herein by reference and Section 4.6
hereof, and the Collateral Agent, for the benefit of the Company, will exercise
its rights as a secured party with respect to applicable Pledged Debt Securities
at the direction of the Company to cause the remarketing of such Pledged Debt
Securities. If a Holder of Income PRIDES does notify the Purchase Contract Agent
as provided in Section 5.4(a)(i) of the Purchase Contract Agreement of its
intention to make a Cash Settlement, but fails to make such payment as required
by Section 5.4(a)(ii) of the Purchase Contract Agreement, such failure shall
constitute a default under the related Purchase Contract and hereunder, and the
Pledged Debt Securities of such a Holder will not be remarketed but instead the
Collateral Agent, for the benefit of the Company, will exercise its rights as a
secured party with respect to such Debt Securities at the direction of the
Company to retain or dispose of the Collateral in accordance with applicable
law. In addition, in the event of a Failed Remarketing as described in Section
5.4(b) of the Purchase Contract Agreement, such Failed Remarketing shall
constitute a default hereunder by such Holder, and the Collateral Agent, for the
benefit of the Company, will also exercise its rights as a secured party with
respect to such Debt Securities at the direction of the Company to retain or
dispose of the Collateral in accordance with applicable law.

                                      -14-
<PAGE>
            (c) If a Holder of Growth PRIDES or Income PRIDES (if a Treasury
Portfolio has replaced the Debt Securities) fails to notify the Purchase
Contract Agent of such Holder's intention to make a Cash Settlement in
accordance with Section 5.4(d)(i) of the Purchase Contract Agreement, or if a
Holder of Growth PRIDES or Income PRIDES (if a Treasury Portfolio has replaced
the Debt Securities) notifies the Purchase Contract Agent as provided in Section
5.4(d)(i) of the Purchase Contract Agreement of its intention to make a Cash
Settlement, but fails to make such payment as required by Section 5.4(d)(ii) of
the Purchase Contract Agreement, such failure shall constitute a default under
the related Purchase Contracts and hereunder by such Holder and upon the
maturity of the related Pledged Treasury Securities or the Pledged Applicable
Ownership Interest in a Treasury Portfolio, if any, held by the Collateral Agent
on the Business Day immediately preceding the Purchase Contract Settlement Date,
the principal amount of such Pledged Treasury Securities or the portion of the
Pledged Applicable Ownership Interest in a Treasury Portfolio corresponding to
such Purchase Contracts received by the Collateral Agent shall, upon written
direction of the Company, be invested promptly in Permitted Investments. On the
Purchase Contract Settlement Date, an aggregate amount equal to the Purchase
Price will be remitted to the Company as payment thereof. In the event the sum
of the proceeds from the Pledged Treasury Securities or the Pledged Applicable
Ownership Interest in a Treasury Portfolio, as the case may be, and the
investment earnings earned from such investments is in excess of the aggregate
Purchase Price of the Purchase Contracts being settled thereby, the Collateral
Agent will distribute such excess to the Purchase Contract Agent for the benefit
of the Holder of the related Growth PRIDES or Income PRIDES when received.

                                      -15-
<PAGE>
SECTION 4.5 Early Settlement.

            (a) Upon written notice to the Collateral Agent by the Purchase
      Contract Agent that a Holder of a Security has elected to effect Early
      Settlement of its entire obligation under the Purchase Contract forming a
      part of such Security in accordance with the terms of the Purchase
      Contract and the Purchase Contract Agreement, and that the Purchase
      Contract Agent has received from such Holder, and paid to the Company as
      confirmed in writing by the Company, the related Early Settlement Amount
      pursuant to the terms of the Purchase Contract and the Purchase Contract
      Agreement and that all conditions to such Early Settlement have been
      satisfied, then the Collateral Agent shall release from the Pledge, (a)
      the Pledged Debt Securities or the appropriate Pledged Applicable
      Ownership Interest in a Treasury Portfolio in the case of a Holder of
      Income PRIDES or (b) the Pledged Treasury Securities in the case of a
      Holder of Growth PRIDES, in each case that had been components of such
      Security, and shall transfer such Pledged Debt Securities or the
      appropriate Pledged Applicable Ownership Interest in a Treasury Portfolio
      or Pledged Treasury Securities, as the case may be, free and clear of the
      Pledge created hereby, to the Purchase Contract Agent for the benefit of
      such Holder.

            (b) Upon a Cash Merger, upon written notice to the Collateral Agent
      by the Purchase Contract Agent that a Holder of a Security has elected to
      effect a Cash Merger Early Settlement of its entire obligation under the
      Purchase Contract forming a part of such Security in accordance with the
      terms of the Purchase Contract and the Purchase Contract Agreement, and
      that the Purchase Contract Agent has received from such Holder, and paid
      to the Company as confirmed in writing by the Company, the related Early
      Settlement Amount pursuant to the terms of the Purchase Contract and the
      Purchase Contract Agreement and that all conditions to such Cash Merger
      Early Settlement have been satisfied, then the Collateral Agent shall
      release from the Pledge, (a) the Pledged Debt Securities or the
      appropriate Pledged Applicable Ownership Interest in a Treasury Portfolio
      in the case of a Holder of Income PRIDES or (b) the Pledged Treasury
      Securities in the case of a Holder of Growth PRIDES, in each case that had
      been components of such Security, and shall transfer such Pledged Debt
      Securities or the appropriate Pledged Applicable Ownership Interest in a
      Treasury Portfolio or Pledged Treasury Securities, as the case may be,
      free and clear of the Pledge created hereby, to the Purchase Contract
      Agent for the benefit of such Holder.

SECTION 4.6 Application of Proceeds; Settlement.

            (a) In the event a Holder of Income PRIDES, unless a Treasury
Portfolio has replaced the Debt Securities, has not elected to make an effective
Cash Settlement by notifying the Purchase Contract Agent in the manner provided
for in Section 5.___ of the Purchase Contract Agreement or has not made an Early
Settlement or Cash Merger Early Settlement of the Purchase Contracts underlying
its Income PRIDES, such Holder shall be deemed to have elected to pay for the
shares of Common Stock to be issued under such Purchase Contracts from the
Proceeds of the related Pledged Debt Securities. The Collateral Agent shall by
10:00 a.m., New York City time, on the fourth Business Day immediately preceding
the Purchase Contract Settlement Date, without any instruction from such Holder
of Income PRIDES, present the related Pledged Debt Securities to the Remarketing
Agent for remarketing. Upon receiving such

                                      -16-
<PAGE>
Pledged Debt Securities, the Remarketing Agent will remarket the Pledged Debt
Securities pursuant to the terms of the Remarketing Agreement. After deducting
the Remarketing from any amount of Proceeds of the Remarketing in excess of the
sum of (i) the aggregate Value of such Debt Securities, plus (ii) such accrued
and unpaid interest on the remarketed Pledged Debt Securities, the Remarketing
Agent will remit the entire amount of the Proceeds of a successful remarketing
to the Collateral Agent. On the Purchase Contract Settlement Date, the
Collateral Agent shall apply that portion of the Proceeds from such remarketing
equal to the aggregate Value of the Pledged Debt Securities, to satisfy in full
the obligations of such Holders of Income PRIDES to pay the Purchase Price to
purchase the Common Stock under the related Purchase Contracts. The remaining
portion of such Proceeds, if any, shall be distributed by the Collateral Agent
to the Purchase Contract Agent for payment to the Holders. If such remarketing
results in a Failed Remarketing, the Collateral Agent will, for the benefit of
the Company, at the written direction of the Company, retain or dispose of the
Pledged Debt Securities in accordance with applicable law and satisfy in full,
from any such disposition or retention, such Holder's obligation to pay the
Purchase Price for the Common Stock under the related Purchase Contracts.

            (b) In the event a Holder of Growth PRIDES or, if a Treasury
Portfolio has replaced the Debt Securities, Income PRIDES, has not made an Early
Settlement of the Purchase Contracts underlying its Growth PRIDES or Income
PRIDES, as the case may be, such Holder shall be deemed to have elected to pay
for the shares of Common Stock to be issued under such Purchase Contracts from
the Proceeds of the related Pledged Treasury Securities or the related Pledged
Applicable Ownership Interest in a Treasury Portfolio, as the case may be. On
the Business Day immediately prior to the Purchase Contract Settlement Date, the
Collateral Agent shall, at the written direction of the Purchase Contract Agent,
invest the Cash proceeds of the maturing Pledged Treasury Securities or the
Pledged Applicable Ownership Interest in a Treasury Portfolio, as the case may
be, in overnight Permitted Investments. Without receiving any instruction from
any such Holder of Growth PRIDES or Income PRIDES, the Collateral Agent shall
apply the Proceeds of the related Pledged Treasury Securities or Pledged
Applicable Ownership Interest in a Treasury Portfolio to the settlement of the
related Purchase Contracts on the Purchase Contract Settlement Date. In the
event the sum of the Proceeds from the related Pledged Treasury Securities or
related Pledged Applicable Ownership Interest in a Treasury Portfolio and the
investment earnings from the investment in overnight Permitted Investments is in
excess of the aggregate Purchase Price of the Purchase Contracts being settled
thereby on the Purchase Contract Settlement Date, the Collateral Agent shall
distribute such excess, when received, to the Purchase Contract Agent for the
benefit of the Holders.

                                      -17-
<PAGE>

            (c) Pursuant to the Remarketing Agreement, on or prior to the fifth
Business Day immediately preceding each proposed Reset Date, but no earlier than
the tenth Business Day immediately preceding such proposed Reset Date, holders
of Separate Debt Securities may elect to have their Separate Debt Securities
remarketed by delivering the Separate Debt Securities, together with a notice of
such election, substantially in the form of Exhibit C hereto, to the Custodial
Agent. The Custodial Agent will hold the Separate Debt Securities in an account
separate from the Collateral Account. A holder of Separate Debt Securities
electing to have its Separate Debt Securities remarketed will also have the
right to withdraw such election by written notice to the Custodial Agent,
substantially in the form of Exhibit D hereto, on or prior to the fifth Business
Day immediately preceding such proposed Reset Date, upon which notice the
Custodial Agent will return the Separate Debt Securities to such holder. On the
fourth Business Day immediately preceding such proposed Reset Date, the
Custodial Agent will deliver to the Remarketing Agent for remarketing all
Separate Debt Securities delivered to the Custodial Agent pursuant to this
Section 4.6(c) and not withdrawn pursuant to the terms hereof prior to such
date. The portion of the proceeds from such remarketing equal to the aggregate
Value of the Separate Debt Securities, plus accrued and unpaid interest, if any,
thereon, will automatically be remitted by the Remarketing Agent to the
Custodial Agent for the benefit of the holders of the Separate Debt Securities.

            In addition, after deducting the Remarketing Fee from any amount of
such proceeds in excess of the sum of (i) the aggregate Value of the remarketed
Separate Debt Securities plus (ii) any accrued and unpaid interest thereon, the
Remarketing Agent will remit to the Custodial Agent the remaining portion of the
proceeds, if any, for the benefit of such holders. If such remarketing results
in a Failed Remarketing, the Remarketing Agent will promptly return the Separate
Debt Securities to the Custodial Agent for redelivery to such holders (which may
be remarketed again in any subsequent remarketing as provided in this Section
4.6(c)).

                                   ARTICLE V

                        VOTING RIGHTS -- DEBT SECURITIES

            The Purchase Contract Agent may exercise, or refrain from
exercising, any and all voting and other consensual rights pertaining to the
Pledged Debt Securities or any part thereof for any purpose not inconsistent
with the terms of this Agreement and in accordance with the terms of the
Purchase Contract Agreement; provided, that the Purchase Contract Agent shall
not exercise or, as the case may be, shall not refrain from exercising such
right if, in the judgment of the Company, such action would impair or otherwise
have a material adverse effect on the value of all or any of the Pledged Debt
Securities; and provided, further, that the Purchase Contract Agent shall give
the Company and the Collateral Agent at least five days' prior written notice of
the manner in which it intends to exercise, or its reasons for refraining from
exercising, any such right. Upon receipt of any notices and other communications
in respect of any Pledged Debt Securities, including notice of any meeting at
which holders of Debt Securities are entitled to vote or solicitation of
consents, waivers or proxies of holders of Debt Securities, the Collateral Agent
shall use reasonable efforts to send promptly to the Purchase Contract Agent
such notice or communication, and as soon as reasonably practicable after
receipt of a written request therefor from the Purchase Contract Agent, execute
and deliver to the Purchase Contract Agent such proxies and other instruments in
respect of such Pledged Debt Securities (in form and

                                     - 18 -
<PAGE>
substance satisfactory to the Collateral Agent) as are prepared by the Purchase
Contract Agent with respect to the Pledged Debt Securities.

                                   ARTICLE VI

  RIGHTS AND REMEDIES; SUBSTITUTION OF A TREASURY PORTFOLIO FOR DEBT SECURITIES

SECTION 6.1     Rights and Remedies of the Collateral Agent.

            (a) In addition to the rights and remedies specified in Section 4.4
hereof or otherwise available at law or in equity, after an event of default
hereunder, the Collateral Agent shall have all of the rights and remedies with
respect to the Collateral of a secured party under the Uniform Commercial Code
(or any successor thereto) as in effect in the State of New York from time to
time (the "Code") (whether or not the Code is in effect in the jurisdiction
where the rights and remedies are asserted) and the TRADES Regulations and such
additional rights and remedies to which a secured party is entitled under the
laws in effect in any jurisdiction where any rights and remedies hereunder may
be asserted. Wherever reference is made in this Agreement to any section of the
Code, such reference shall be deemed to include a reference to any provision of
the Code which is a successor to, or amendment of, such section. Without
limiting the generality of the foregoing, such remedies may include, to the
extent permitted by applicable law, (i) retention of the Pledged Debt Securities
or other Collateral in full satisfaction of the Holders' obligations under the
Purchase Contracts or (ii) sale of the Pledged Debt Securities or other
Collateral in one or more public or private sales and application of the
proceeds in full satisfaction of the Holders' obligations under the Purchase
Contracts.

            (b) Without limiting any rights or powers otherwise granted by this
Agreement to the Collateral Agent, in the event the Collateral Agent is unable
to make payments to the Company on account of the Pledged Applicable Ownership
Interest of a Treasury Portfolio (as specified in clauses (1)(i) or (2)(i) of
the definition of the term "Applicable Ownership Interest") or on account of
principal payments of any Pledged Treasury Securities as provided in Article III
hereof in satisfaction of the obligations of the Holder of the Securities of
which such Pledged Treasury Securities, or the Pledged Applicable Ownership
Interest of a Treasury Portfolio (as specified in clauses (1)(i) or (2)(i) of
the definition of the term "Applicable Ownership Interest"), as applicable, is a
part under the related Purchase Contracts, the inability to make such payments
shall constitute a default hereunder and the Collateral Agent shall have and may
exercise, with reference to such Pledged Treasury Securities, or such
appropriate Pledged Applicable Ownership Interest of a Treasury Portfolio (as
specified in clauses (1)(i) or (2)(i) of the definition of the term Applicable
Ownership Interest), as applicable, and such obligations of such Holder, any and
all of the rights and remedies available to a secured party under the Code and
the TRADES Regulations after default by a debtor, and as otherwise granted
herein or under any other law.

                                     - 19 -
<PAGE>
            (c) Without limiting any rights or powers otherwise granted by this
Agreement to the Collateral Agent, the Collateral Agent is hereby irrevocably
authorized to receive and collect all payments of (i) principal of, or interest
on, the Pledged Debt Securities, (ii) the principal amount of the Pledged
Treasury Securities, or (iii) the appropriate Pledged Applicable Ownership
Interest in a Treasury Portfolio, subject, in each case, to the provisions of
Article III, and as otherwise provided herein.

            (d) The Purchase Contract Agent individually and as attorney-in-fact
for each Holder of Securities, in the event such Holder becomes the Holder of
Income PRIDES or Growth PRIDES, agrees that, from time to time, upon the written
request of the Collateral Agent, the Purchase Contract Agent or such Holder, it
shall execute and deliver such further documents and do such other acts and
things as the Collateral Agent may reasonably request in order to maintain the
Pledge, and the perfection and priority thereof, and to confirm the rights of
the Collateral Agent hereunder. The Purchase Contract Agent shall have no
liability to any Holder for executing any documents or taking any such acts
requested by the Collateral Agent hereunder, except for liability for its own
negligent act, its own negligent failure to act or its own willful misconduct.

SECTION 6.2     Substitution of a Treasury Portfolio for Debt Securities.

            (a) Upon the occurrence of a Tax Event Redemption prior to the
Purchase Contract Settlement Date, the Collateral Agent will, upon the written
instruction of the Company and the Purchase Contract Agent, deliver the
Applicable Principal Amount of Pledged Debt Securities to the Indenture Trustee
for payment of the Redemption Price. The Collateral Agent shall, or in the event
the Pledged Debt Securities are registered in the name of the Purchase Contract
Agent, the Purchase Contract Agent shall, direct the Indenture Trustee to pay
the Redemption Price therefor payable on the Tax Event Redemption Date on or
prior to 12:30 p.m., New York City time, by check or wire transfer in
immediately available funds at such place and at such account as may be
designated by the Collateral Agent. In the event the Collateral Agent receives
such Redemption Price, subject to the provisions of Section 4.3 hereof, the
Collateral Agent will, at the written direction of the Company, apply an amount
equal to the Redemption Amount of such Redemption Price to purchase from the
Quotation Agent, the Tax Event Treasury Portfolio and promptly remit the
remaining portion of such Redemption Price to the Purchase Contract Agent for
payment to the Holders of Income PRIDES. The Collateral Agent shall Transfer the
Tax Event Treasury Portfolio to the Collateral Account to secure the obligation
of all Holders of Income PRIDES to purchase Common Stock of the Company under
the Purchase Contracts constituting a part of such Income PRIDES, in
substitution for the Pledged Debt Securities. Thereafter the Collateral Agent
shall have such security interests, rights and obligations with respect to the
Tax Event Treasury Portfolio as it had in respect of the Pledged Debt
Securities, as provided in Articles II, III, IV, V and VI hereof, and any
reference herein to the Pledged Debt Securities shall be deemed to be a
reference to such Tax Event Treasury Portfolio.

                                     - 20 -
<PAGE>
            (b) Upon the successful remarketing of the Debt Securities on any
Remarketing Date, the proceeds of such remarketing (after deducting any
Remarketing Fee) shall be delivered to the Collateral Agent in exchange for the
Pledged Debt Securities. Pursuant to the terms of this Agreement, the Collateral
Agent will apply an amount equal to the Remarketing Treasury Portfolio Purchase
Price to purchase on behalf of the Holders of Income PRIDES the Remarketing
Treasury Portfolio and promptly remit the remaining portion of such proceeds to
the Purchase Contract Agent for payment to the Holders of such Income PRIDES.
The Remarketing Treasury Portfolio will be substituted for the outstanding
Pledged Debt Securities, and will be held by the Collateral Agent in accordance
with the terms of this Agreement to secure the obligation of each Holder of an
Income PRIDES to purchase the Common Stock of the Company on the Purchase
Contract Settlement Date under the Purchase Contract constituting a part of such
Income PRIDES. Following the successful remarketing of the Debt Securities on
any Remarketing Date, the Holders of Income PRIDES and the Collateral Agent
shall have such security interests, rights and obligations with respect to the
Remarketing Treasury Portfolio as the Holder of Income PRIDES and the Collateral
Agent had in respect of the Pledged Debt Securities subject to the Pledge
thereof as provided in Articles II, III, IV, V and VI hereof, and any reference
herein to the Pledged Debt Securities shall be deemed to be reference to the
Remarketing Treasury Portfolio.

SECTION 6.3     Remarketing.

            The Collateral Agent shall, by 10:00 a.m., New York City time, on
the fourth Business Day immediately preceding any proposed Reset Date, without
any instruction from any Holder of Income PRIDES, present the related Pledged
Debt Securities to the Remarketing Agent for remarketing pursuant to the
Remarketing Agreement. Upon receiving such Pledged Debt Securities, the
Remarketing Agent will remarket such Debt Securities pursuant to the terms of
the Remarketing Agreement. If such remarketing is successful, after deducting
the Remarketing Fee from any amount of Proceeds therefrom in excess of the sum
of (i) Remarketing Treasury Portfolio Purchase Price, plus (ii) the amount of
accrued and unpaid interest, if any, on the Pledged Debt Securities, the
Remarketing Agent will remit the entire amount of the Proceeds of such
remarketing to the Collateral Agent on or prior to 12:00 p.m., New York City
time, on the Reset Date. In the event the Collateral Agent receives such
Proceeds, the Collateral Agent will, at the written direction of the Company,
apply an amount equal to the Remarketing Treasury Portfolio Purchase Price to
purchase from the Quotation Agent the Remarketing Treasury Portfolio and remit
the remaining portion of such Proceeds, if any, to the Purchase Contract Agent
for payment to the Holders of Income PRIDES. The Collateral Agent shall Transfer
the Remarketing Treasury Portfolio to the Collateral Account to secure the
obligation of all Holders of Income PRIDES to purchase Common Stock of the
Company under the Purchase Contracts constituting a part of such Income PRIDES,
in substitution for the Pledged Debt Securities. Thereafter the Collateral Agent
shall have such security interests, rights and obligations with respect to the
Remarketing Treasury Portfolio as it had in respect of the Pledged Debt
Securities as provided in Articles II, III, IV, V and VI hereof, and any
reference herein to the Pledged Debt Securities shall be deemed to be a
reference to such Remarketing Treasury Portfolio, and any reference herein to
interest on the Debt Securities shall be deemed to be a reference to
distributions on such Remarketing Treasury Portfolio.

                                     - 21 -
<PAGE>
SECTION 6.4     Substitutions.

            Whenever a Holder has the right to substitute Treasury Securities,
Debt Securities or the appropriate Applicable Ownership Interest in a Treasury
Portfolio, as the case may be, for Collateral held by the Collateral Agent, such
substitution shall not constitute a novation of the security interest created
hereby.

                                  ARTICLE VII

                    REPRESENTATIONS AND WARRANTIES; COVENANTS

SECTION 7.1     Representations and Warranties.

            The Holders from time to time, acting through the Purchase Contract
Agent as their attorney-in-fact (it being understood that the Purchase Contract
Agent shall not be liable for any representation or warranty made by or on
behalf of a Holder), hereby represent and warrant to the Collateral Agent, which
representations and warranties shall be deemed repeated on each day a Holder
Transfers Collateral that:

            (a) such Holder has the power to grant a security interest in and
lien on the Collateral;

            (b) such Holder is the sole beneficial owner of the Collateral and,
in the case of Collateral delivered in physical form, is the sole holder of such
Collateral and is the sole beneficial owner of, or has the right to Transfer,
the Collateral it Transfers to the Collateral Agent, free and clear of any
security interest, lien, encumbrance, call, liability to pay money or other
restriction other than the security interest and lien granted under Article II
hereof;

            (c) upon the Transfer of the Collateral to the Collateral Account or
physical delivery of the Debt Securities to the Collateral Agent, the Collateral
Agent, for the benefit of the Company, will have a valid and perfected first
priority security interest therein (assuming that any central clearing operation
or any intermediary or other entity not within the control of the Holder
involved in the Transfer of the Collateral, including the Collateral Agent,
gives the notices and takes the action required of it hereunder and under
applicable law for perfection of that interest and assuming the establishment
and exercise of control pursuant to Section 2.2 hereof); and

            (d) the execution and performance by the Holder of its obligations
under this Agreement will not result in the creation of any security interest,
lien or other encumbrance on the Collateral other than the security interest and
lien granted under Article II hereof or violate any provision of any existing
law or regulation applicable to it or of any mortgage, charge, pledge,
indenture, contract or undertaking to which it is a party or which is binding on
it or any of its assets.

SECTION 7.2     Covenants.

            The Holders from time to time, acting through the Purchase Contract
Agent as their attorney-in-fact (it being understood that the Purchase Contract
Agent shall not be liable for

                                     - 22 -
<PAGE>
any covenant made by or on behalf of a Holder), hereby covenant to the
Collateral Agent that for so long as the Collateral remains subject to the
Pledge:

            (a) neither the Purchase Contract Agent nor such Holders will create
or purport to create or allow to subsist any mortgage, charge, lien, pledge or
any other security interest whatsoever over the Collateral or any part of it
other than pursuant to this Agreement; and

            (b) neither the Purchase Contract Agent nor such Holders will sell
or otherwise dispose (or attempt to dispose) of the Collateral or any part of it
except for the beneficial interest therein, subject to the pledge hereunder,
transferred in connection with the Transfer of the Securities.

                                  ARTICLE VIII

                              THE COLLATERAL AGENT

SECTION 8.1     Appointment, Powers and Immunities.

            The Collateral Agent shall act as agent for the Company hereunder
with such powers as are specifically vested in the Collateral Agent by the terms
of this Agreement, together with such other powers as are reasonably incidental
thereto. Each of the Collateral Agent, the Custodial Agent and the Securities
Intermediary: (a) shall have no duties or responsibilities, except those
expressly set forth in or incorporated into this Agreement, and no implied
covenants or obligations shall be inferred from this Agreement against any of
them, nor shall any of them be bound by the provisions of any agreement by any
party hereto beyond the specific or incorporated terms hereof; (b) shall not be
responsible for any recitals contained in this Agreement, or in any certificate
or other document referred to or provided for in, or received by it under, this
Agreement, the Securities or the Purchase Contract Agreement (except as
specifically incorporated by reference herein), or for the value, validity,
effectiveness, genuineness, enforceability or sufficiency of this Agreement
(other than as against the Collateral Agent, the Custodial Agent or the
Securities Intermediary), the Securities or the Purchase Contract Agreement or
any other document referred to or provided for herein (except as specifically
incorporated by reference herein) or therein or for any failure by the Company
or any other Person (except the Collateral Agent, the Custodial Agent or the
Securities Intermediary, as the case may be) to perform any of its obligations
hereunder or thereunder or for the perfection, priority or, except as expressly
required hereby, maintenance of any security interest created hereunder; (c)
shall not be required to initiate or conduct any litigation or collection
proceedings hereunder (except in the case of the Collateral Agent, pursuant to
directions furnished under Section 8.2 hereof, subject to Section 8.6 hereof);
(d) shall not be responsible for any action taken or omitted to be taken by it
hereunder or under any other document or instrument referred to or provided for
herein or in connection herewith or therewith, except for its own negligence,
willful misconduct or bad faith; and (e) shall not be required to advise any
party as to selling or retaining, or taking or refraining from taking any action
with respect to, the Securities or other property deposited hereunder in
accordance with the terms hereof. Subject to the foregoing, during the term of
this Agreement, the Collateral Agent shall

                                     - 23 -
<PAGE>
take all reasonable action in connection with the safekeeping and preservation
of the Collateral hereunder.

            No provision of this Agreement shall require the Collateral Agent,
the Custodial Agent or the Securities Intermediary to expend or risk its own
funds or otherwise incur any financial liability in the performance of any of
its duties hereunder. In no event shall the Collateral Agent, the Custodial
Agent or the Securities Intermediary be liable for any amount in excess of the
Value of the Collateral. Notwithstanding the foregoing, the Collateral Agent,
the Custodial Agent and the Securities Intermediary, each in its individual
capacity, hereby waive any right of setoff, bankers lien, liens or perfection
rights as Securities Intermediary or any counterclaim with respect to any of the
Collateral.

SECTION 8.2     Instructions of the Company.

            The Company shall have the right, by one or more instruments in
writing executed and delivered to the Collateral Agent, the Custodial Agent or
the Securities Intermediary, as the case may be, to direct the time, method and
place of conducting any proceeding for the realization of any right or remedy
available to the Collateral Agent, or of exercising any power conferred on the
Collateral Agent, the Custodial Agent or the Securities Intermediary, as the
case may be, or to direct the taking or refraining from taking of any action
authorized by this Agreement; provided, however, that (i) such direction shall
not conflict with the provisions of any law or of this Agreement and (ii) the
Collateral Agent, the Custodial Agent and the Securities Intermediary shall be
adequately indemnified as provided herein. Nothing in this Section 8.2 shall
impair the right of the Collateral Agent in its discretion to take any action or
omit to take any action which it deems proper and which is not inconsistent with
such direction.

SECTION 8.3     Reliance by Collateral Agent.

            Each of the Securities Intermediary, the Custodial Agent and the
Collateral Agent shall be entitled conclusively to rely upon any certification,
order, judgment, opinion, notice or other communication (including, without
limitation, any thereof by telephone, telecopy, telex or facsimile) believed by
it to be genuine and correct and to have been signed or sent by or on behalf of
the proper Person or Persons (without being required to determine the
correctness of any fact stated therein), and upon advice and statements of legal
counsel and other experts selected by the Collateral Agent, the Custodial Agent
or the Securities Intermediary, as the case may be. As to any matters not
expressly provided for by this Agreement, the Collateral Agent, the Custodial
Agent and the Securities Intermediary shall, in all cases, be fully protected in
acting, or in refraining from acting, hereunder in accordance with instructions
given by the Company in accordance with this Agreement.

SECTION 8.4     Rights in Other Capacities.

            The Collateral Agent, the Custodial Agent and the Securities
Intermediary and their affiliates may (without having to account therefor to the
Company) accept deposits from, lend money to, make their investments in and
generally engage in any kind of banking, trust or other business with the
Purchase Contract Agent and any Holder of Securities (and any of their

                                     - 24 -
<PAGE>
respective subsidiaries or affiliates) as if it were not acting as the
Collateral Agent, the Custodial Agent or the Securities Intermediary, as the
case may be, and the Collateral Agent, the Custodial Agent and the Securities
Intermediary and their affiliates may accept fees and other consideration from
the Purchase Contract Agent and any Holder of Securities without having to
account for the same to the Company; provided that each of the Securities
Intermediary, the Custodial Agent and the Collateral Agent covenants and agrees
with the Company that it shall not accept, receive or permit there to be created
in favor of itself and shall take no affirmative action to permit there to be
created in favor of any other Person, any security interest, lien or other
encumbrance of any kind in or upon the Collateral.

SECTION 8.5     Non-Reliance on Collateral Agent.

            None of the Securities Intermediary, the Custodial Agent or the
Collateral Agent shall be required to keep itself informed as to the performance
or observance by the Purchase Contract Agent or any Holder of Securities of this
Agreement, the Purchase Contract Agreement, the Securities or any other document
referred to or provided for herein or therein or to inspect the properties or
books of the Purchase Contract Agent or any Holder of Securities. The Collateral
Agent, the Custodial Agent and the Securities Intermediary shall not have any
duty or responsibility to provide the Company with any credit or other
information concerning the affairs, financial condition or business of the
Purchase Contract Agent or any Holder of Securities (or any of their respective
affiliates) that may come into the possession of the Collateral Agent, the
Custodial Agent or the Securities Intermediary or any of their respective
affiliates.

SECTION 8.6     Compensation and Indemnity.

            The Company agrees: (i) to pay each of the Collateral Agent and the
Custodial Agent from time to time such compensation as shall be agreed in
writing between the Company and the Collateral Agent or the Custodial Agent, as
the case may be, for all services rendered by each of them hereunder and (ii) to
indemnify the Collateral Agent, the Custodial Agent and the Securities
Intermediary for, and to hold each of them harmless from and against, any loss,
liability or reasonable out-of-pocket expense incurred without negligence,
willful misconduct or bad faith on its part, arising out of or in connection
with the acceptance or administration of its powers and duties under this
Agreement, including the reasonable out-of-pocket costs and expenses (including
reasonable fees and expenses of counsel) of defending itself against any claim
or liability in connection with the exercise or performance of such powers and
duties. The Collateral Agent, the Custodial Agent and the Securities
Intermediary shall each promptly notify the Company of any third party claim
which may give rise to indemnity hereunder and give the Company the opportunity
to participate in the defense of such claim with counsel reasonably satisfactory
to the indemnified party, and no such claim shall be settled without the written
consent of the Company, which consent shall not be unreasonably withheld.

SECTION 8.7     Failure to Act.

            In the event of any ambiguity in the provisions of this Agreement or
any dispute between or conflicting claims by or among the parties hereto or any
other Person with respect to any funds or property deposited hereunder, the
Collateral Agent and the Custodial Agent shall be

                                     - 25 -
<PAGE>
entitled, after prompt notice to the Company and the Purchase Contract Agent, at
its sole option, to refuse to comply with any and all claims, demands or
instructions with respect to such property or funds so long as such dispute or
conflict shall continue, and neither the Collateral Agent nor the Custodial
Agent shall be or become liable in any way to any of the parties hereto for its
failure or refusal to comply with such conflicting claims, demands or
instructions. The Collateral Agent and the Custodial Agent shall be entitled to
refuse to act until either (i) such conflicting or adverse claims or demands
shall have been finally determined by a court of competent jurisdiction or
settled by agreement between the conflicting parties as evidenced in a writing,
satisfactory to the Collateral Agent or the Custodial Agent, as the case may be,
or (ii) the Collateral Agent or the Custodial Agent, as the case may be, shall
have received security or an indemnity satisfactory to the Collateral Agent or
the Custodial Agent, as the case may be, sufficient to save the Collateral Agent
or the Custodial Agent, as the case may be, harmless from and against any and
all loss, liability or reasonable out-of-pocket expense which the Collateral
Agent or the Custodial Agent, as the case may be, may without negligence,
willful misconduct or bad faith on its part incur by reason of its acting. The
Collateral Agent or the Custodial Agent may, in addition, elect to commence an
interpleader action or seek other judicial relief or orders as the Collateral
Agent or the Custodial Agent, as the case may be, may deem necessary.
Notwithstanding anything contained herein to the contrary, neither the
Collateral Agent nor the Custodial Agent shall be required to take any action
that is, in its opinion, contrary to law or to the terms of this Agreement or
which would, in its opinion, subject it or any of its officers, employees or
directors to liability.

SECTION 8.8     Resignation of Collateral Agent.

            Subject to the appointment and acceptance of a successor Collateral
Agent or Custodial Agent as provided below, (a) the Collateral Agent and the
Custodial Agent may resign at any time by giving notice thereof to the Company
and the Purchase Contract Agent as attorney-in-fact for the Holders of
Securities, (b) the Collateral Agent and the Custodial Agent may be removed at
any time by the Company and (c) if the Collateral Agent or the Custodial Agent
fails to perform any of its material obligations hereunder in any material
respect for a period of not less than 20 days after receiving written notice of
such failure by the Purchase Contract Agent and such failure shall be
continuing, the Collateral Agent or the Custodial Agent may be removed by the
Purchase Contract Agent. The Purchase Contract Agent shall promptly notify the
Company of any removal of the Collateral Agent pursuant to clause (c) of the
immediately preceding sentence. Upon any such resignation or removal, the
Company shall have the right to appoint a successor Collateral Agent or
Custodial Agent, as the case may be. If no successor Collateral Agent or
Custodial Agent, as the case may be, shall have been so appointed and shall have
accepted such appointment within 30 days after the retiring Collateral Agent's
or Custodial Agent's giving of notice of resignation or such removal, then the
retiring Collateral Agent or Custodial Agent, as the case may be, may petition
any court of competent jurisdiction for the appointment of a successor
Collateral Agent or Custodial Agent, as the case may be. Each of the Collateral
Agent and the Custodial Agent shall be a bank which has an office in New York,
New York with a combined capital and surplus of at least $75,000,000. Upon the
acceptance of any appointment as Collateral Agent or Custodial Agent hereunder,
as the case may be, by a successor Collateral Agent or Custodial Agent, as the
case may be, such successor shall thereupon succeed to and become vested with
all the rights, powers, privileges and duties of the retiring Collateral Agent
or Custodial Agent, as the case may be, and the

                                     - 26 -
<PAGE>
retiring Collateral Agent or Custodial Agent, as the case may be, shall take all
appropriate action to transfer any money and property held by it hereunder
(including the Collateral) to such successor. The retiring Collateral Agent or
Custodial Agent shall, upon such succession, be discharged from its duties and
obligations as Collateral Agent or Custodial Agent hereunder. After any retiring
Collateral Agent's or Custodial Agent's resignation as Collateral Agent or
Custodial Agent hereunder, the provisions of this Article VIII shall continue in
effect for its benefit in respect of any actions taken or omitted to be taken by
it while it was acting as the Collateral Agent or Custodial Agent. Any
resignation or removal of the Collateral Agent hereunder shall be deemed for all
purposes of this Agreement as the simultaneous resignation or removal of the
Custodial Agent and the Securities Intermediary.

SECTION 8.9     Right to Appoint Agent or Advisor.

            The Collateral Agent shall have the right to appoint agents or
advisors in connection with any of its duties hereunder, and the Collateral
Agent shall not be liable for any action taken or omitted by, or in reliance
upon the advice of, such agents or advisors selected in good faith. The
appointment of agents pursuant to this Section 8.9 shall be subject to prior
consent of the Company, which consent shall not be unreasonably withheld.

SECTION 8.10    Survival.

            The provisions of this Article VIII shall survive termination of
this Agreement and the resignation or removal of the Collateral Agent or the
Custodial Agent.

SECTION 8.11    Exculpation.

            Anything in this Agreement to the contrary notwithstanding, in no
event shall any of the Collateral Agent, the Custodial Agent or the Securities
Intermediary or any of their officers, employees or agents be liable under this
Agreement to any third party for indirect, special, punitive or consequential
loss or damage of any kind whatsoever, including, but not limited to, lost
profits, whether or not the likelihood of such loss or damage was known to the
Collateral Agent, the Custodial Agent or the Securities Intermediary, or any of
them, incurred without any act or deed that is found to be attributable to gross
negligence or willful misconduct on the part of the Collateral Agent, the
Custodial Agent or the Securities Intermediary.

                                   ARTICLE IX

                                    AMENDMENT

SECTION 9.1     Amendment without Consent of Holders.

            Without the consent of any Holders or the holders of any Separate
Debt Securities, the Company, the Collateral Agent, the Custodial Agent, the
Securities Intermediary and the Purchase Contract Agent, at any time and from
time to time, may amend this Agreement, in form satisfactory to the Company, the
Collateral Agent, the Custodial Agent, the Securities Intermediary and the
Purchase Contract Agent, for any of the following purposes:

                                     - 27 -
<PAGE>
            (a) to evidence the succession of another Person to the Company, and
the assumption by any such successor of the covenants of the Company; or

            (b) to add to the covenants of the Company for the benefit of the
Holders or to surrender any right or power herein conferred upon the Company so
long as such covenants or such surrender do not adversely affect the validity,
perfection or priority of the security interests granted or created hereunder;
or

            (c) to evidence and provide for the acceptance of appointment
hereunder by a successor Collateral Agent, Custodial Agent, Securities
Intermediary or Purchase Contract Agent; or

            (d) to cure any ambiguity, to correct or supplement any provisions
herein which may be inconsistent with any other such provisions herein or to
make any other provisions with respect to such matters or questions arising
under this Agreement, provided such action shall not adversely affect the
interests of the Holders.

SECTION 9.2     Amendment with Consent of Holders.

            With the consent of the Holders of not less than a majority of the
Purchase Contracts at the time outstanding, by Act of said Holders delivered to
the Company, the Purchase Contract Agent or the Collateral Agent, as the case
may be, the Company, the Purchase Contract Agent, the Collateral Agent, the
Custodial Agent and the Securities Intermediary may amend this Agreement for the
purpose of modifying in any manner the provisions of this Agreement or the
rights of the Holders in respect of the Securities; provided, however, that no
such supplemental agreement shall, without the consent of the Holder of each
Outstanding Security adversely affected thereby,

            (a) change the amount or type of Collateral underlying a Security
      (subject to the rights of Holders to make Collateral Substitutions as
      contemplated by Sections 4.1 and 4.2), impair the right of the Holder of
      any Security to receive distributions on the underlying Collateral or
      otherwise adversely affect the Holder's rights in or to such Collateral;
      or

            (b) otherwise effect any action that would require the consent of
      the Holder of each Outstanding Security affected thereby pursuant to the
      Purchase Contract Agreement if such action were effected by an agreement
      supplemental thereto; or

            (c) reduce the percentage of Purchase Contracts the consent of whose
      Holders is required for any such amendment.

It shall not be necessary for any Act of Holders under this Article IX to
approve the particular form of any proposed amendment, but it shall be
sufficient if such Act shall approve the substance thereof.

                                     - 28 -
<PAGE>
SECTION 9.3     Execution of Amendments.

            In executing any amendment permitted by this Section, the Collateral
Agent, the Custodial Agent, the Securities Intermediary and the Purchase
Contract Agent shall be entitled to receive and (subject to Section 6.1 hereof,
with respect to the Collateral Agent, and Section 7.1 of the Purchase Contract
Agreement, with respect to the Purchase Contract Agent) shall be fully protected
in relying upon, an Opinion of Counsel stating that the execution of such
amendment is authorized or permitted by this Agreement and that all conditions
precedent, if any, to the execution and delivery of such amendment have been
satisfied.

SECTION 9.4     Effect of Amendments.

            Upon the execution of any amendment under this Article IX, this
Agreement shall be modified in accordance therewith, and such amendment shall
form a part of this Agreement for all purposes; and every Holder of Securities
theretofore or thereafter authenticated, executed on behalf of the Holders and
delivered under the Purchase Contract Agreement shall be bound thereby.

SECTION 9.5     Reference to Amendments.

            Security Certificates authenticated, executed on behalf of the
Holders and delivered after the execution of any amendment pursuant to this
Article IX may, and shall if required by the Collateral Agent or the Purchase
Contract Agent, bear a notation in form approved by the Purchase Contract Agent
and the Collateral Agent as to any matter provided for in such amendment. If the
Company shall so determine, new Security Certificates so modified as to conform,
in the opinion of the Collateral Agent, the Purchase Contract Agent and the
Company, to any such amendment may be prepared and executed by the Company and
authenticated, executed on behalf of the Holders and delivered by the Purchase
Contract Agent in accordance with the Purchase Contract Agreement in exchange
for Outstanding Security Certificates.

                                   ARTICLE X

                                  MISCELLANEOUS

SECTION 10.1    No Waiver.

            No failure on the part of the Collateral Agent or any of its agents
to exercise, and no course of dealing with respect to, and no delay in
exercising, any right, power or remedy hereunder shall operate as a waiver
thereof; nor shall any single or partial exercise by the Collateral Agent or any
of its agents of any right, power or remedy hereunder preclude any other or
further exercise thereof or the exercise of any other right, power or remedy.

            The remedies herein are cumulative and are not exclusive of any
remedies provided by law.

                                     - 29 -
<PAGE>
SECTION 10.2    Governing Law.

            THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK. Without limiting the foregoing, the above
choice of law is expressly agreed to by the Company, the Securities
Intermediary, the Custodial Agent, the Collateral Agent and the Holders from
time to time acting through the Purchase Contract Agent, as their
attorney-in-fact, in connection with the establishment and maintenance of the
Collateral Account. The Company, the Collateral Agent and the Holders from time
to time of the Securities, acting through the Purchase Contract Agent as their
attorney-in-fact, hereby submit to the nonexclusive jurisdiction of the United
States District Court for the Southern District of New York and of any New York
state court sitting in New York City for the purposes of all legal proceedings
arising out of or relating to this Agreement or the transactions contemplated
hereby. The Company, the Collateral Agent and the Holders from time to time of
the Securities, acting through the Purchase Contract Agent as their
attorney-in-fact, irrevocably waive, to the fullest extent permitted by
applicable law, any objection which they may now or hereafter have to the laying
of the venue of any such proceeding brought in such a court and any claim that
any such proceeding brought in such a court has been brought in an inconvenient
forum.

SECTION 10.3    Notices.

            All notices, requests, consents and other communications provided
for herein (including, without limitation, any modifications of, or waivers or
consents under, this Agreement) shall be given or made in writing (including,
without limitation, by telecopy) delivered to the intended recipient at the
"Address for Notices" specified below its name on the signature pages hereof (or
in the case of Holders, may be made and deemed given as provided in Sections 1.5
and 1.6 of the Purchase Contract Agreement) or, as to any party, at such other
address as shall be designated by such party in a written notice to each of the
other parties. Except as otherwise provided in this Agreement, all such
communications shall be deemed to have been duly given when transmitted by
telecopier or personally delivered or, in the case of a mailed notice, upon
receipt, in each case given or addressed as aforesaid (except as aforesaid).

SECTION 10.4    Successors and Assigns.

            This Agreement shall be binding upon and inure to the benefit of the
respective successors and assigns of the Company, the Collateral Agent, the
Custodial Agent, the Securities Intermediary and the Purchase Contract Agent,
and the Holders from time to time of the Securities, by their acceptance of the
same, shall be deemed to have agreed to be bound by the provisions hereof and to
have ratified the agreements of, and the grant of the Pledge hereunder by, the
Purchase Contract Agent.

SECTION 10.5    Counterparts.

            This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one and the same instrument, and any of
the parties hereto may execute this Agreement by signing any such counterpart.

                                     - 30 -
<PAGE>
SECTION 10.6    Severability.

            If any provision hereof is invalid and unenforceable in any
jurisdiction, then, to the fullest extent permitted by law, (i) the other
provisions hereof shall remain in full force and effect in such jurisdiction and
shall be liberally construed in order to carry out the intentions of the parties
hereto as nearly as may be possible and (ii) the invalidity or unenforceability
of any provision hereof in any jurisdiction shall not affect the validity or
enforceability of such provision in any other jurisdiction.

SECTION 10.7    Expenses, Etc.

            The Company agrees to reimburse the Collateral Agent and the
Custodial Agent for: (a) all reasonable out-of-pocket costs and expenses of the
Collateral Agent and the Custodial Agent (including, without limitation, the
reasonable fees and expenses of the necessary services of a Securities
Intermediary and of counsel to the Collateral Agent and the Custodial Agent), in
connection with (i) the negotiation, preparation, execution and delivery or
performance of this Agreement and (ii) any modification, supplement or waiver of
any of the terms of this Agreement; (b) all reasonable costs and expenses of the
Collateral Agent (including, without limitation, reasonable fees and expenses of
counsel) in connection with (i) any enforcement or proceedings resulting or
incurred in connection with causing any Holder of Securities to satisfy its
obligations under the Purchase Contracts forming a part of the Securities and
(ii) the enforcement of this Section 10.7; and (c) all transfer, stamp,
documentary or other similar taxes, assessments or charges levied by any
governmental or revenue authority in respect of this Agreement or any other
document referred to herein and all costs, expenses, taxes, assessments and
other charges incurred in connection with any filing, registration, recording or
perfection of any security interest contemplated hereby.

SECTION 10.8    Security Interest Absolute.

            All rights of the Collateral Agent and security interests hereunder,
and all obligations of the Holders from time to time hereunder, shall be
absolute and unconditional irrespective of:

            (a) any lack of validity or enforceability of any provision of the
Purchase Contracts or the Securities or any other agreement or instrument
relating thereto;

            (b) any change in the time, manner or place of payment of, or any
other term of, or any increase in the amount of, all or any of the obligations
of Holders of Securities under the related Purchase Contracts, or any other
amendment or waiver of any term of, or any consent to any departure from any
requirement of, the Purchase Contract Agreement or any Purchase Contract or any
other agreement or instrument relating thereto; or

            (c) any other circumstance which might otherwise constitute a
defense available to, or discharge of, a borrower, a guarantor or a pledgor.

                                     - 31 -
<PAGE>
            IN WITNESS WHEREOF, the parties hereto have caused this Pledge
Agreement to be duly executed as of the day and year first above written.

                                      AmerUs Group Co.

                                      By:
                                      Name:
                                      Title:

                                      Address for Notices:

                                      AmerUs Group Co.
                                      Hub Tower
                                      699 Walnut Street
                                      Des Moines, Iowa 50309-3948
                                      Attention:
                                      Telecopy:  515-

                                      Wachovia Bank, National Association
                                      as Purchase Contract Agent and as
                                      attorney-in-fact of the Holders from
                                      time to time of the Securities

                                      By:
                                      Name:
                                      Title:

                                      Address for Notices:

                                      [-----------------------------]
                                      Attention: Corporate Trust Administration
                                      Telecopy:  (   )

                                     - 32 -
<PAGE>
                                      BNY Midwest Trust Company
                                      as Collateral Agent, Custodial
                                      Agent and as Securities Intermediary

                                      By:
                                      Name:
                                      Title:

                                      Address for Notices:

                                      [------------------------------]
                                      Attention: Institutional Trust Services
                                      Telecopy:  (   )

                                     - 33 -

<PAGE>
                                   EXHIBIT A

          INSTRUCTION FROM PURCHASE CONTRACT AGENT TO COLLATERAL AGENT

[________________], as Collateral Agent
[________________________]

Attention: Global Trust Services

                  Re:  Securities of AmerUs Group Co. (the "Company")

      We hereby notify you in accordance with Section {4.1} {4.2} of the Pledge
Agreement, dated as of May [__], 2003 (the "Pledge Agreement"), among the
Company, yourselves, as Collateral Agent, Custodial Agent and Securities
Intermediary, and ourselves, as Purchase Contract Agent and as attorney-in-fact
for the Holders of {Income PRIDES} {Growth PRIDES} from time to time, that the
Holder of securities listed below (the "Holder") has elected to substitute $____
{principal amount at maturity of Treasury Securities} {principal amount of Debt
Securities} {the Applicable Ownership Interest in the {Remarketing]{Tax Event}
Treasury Portfolio} in exchange for an equal Value of {Pledged Debt Securities}
{the Pledged Applicable Ownership Interest in the {Remarketing} {Tax Event}
Treasury Portfolio} {Pledged Treasury Securities} held by you in accordance with
the Pledge Agreement and has delivered to us a notice stating that the Holder
has Transferred {Debt Securities} {the Applicable Ownership Interest in the
{Remarketing} {Tax Event} Treasury Portfolio} {Treasury Securities} to you, as
Collateral Agent. We hereby instruct you, upon receipt of such {Treasury
Securities} {Debt Securities} {Applicable Ownership Interest in the
{Remarketing} {Tax Event} Treasury Portfolio} so Transferred, to release the
{Pledged Debt Securities} {Pledged Applicable Ownership Interest in the
{Remarketing} {Tax Event} Treasury Portfolio} {Pledged Treasury Securities}
related to such {Income PRIDES} {Growth PRIDES} to us in accordance with the
Holder's instructions. Capitalized terms used herein but not defined shall have
the meaning set forth or incorporated by reference in the Pledge Agreement.

Date:_______________________________    By:_____________________________________
                                            Name:
                                            Title:
                                            Signature Guarantee:________________

Please print name and address of registered Holder electing to substitute
{Treasury Securities} {Debt Securities} {Applicable Ownership Interest in a
Treasury Portfolio} for {Pledged Debt Securities or Pledged Applicable Ownership
Interest in a Treasury Portfolio} {Pledged Treasury Securities}:

                                      A-1
<PAGE>
____________________________________     _______________________________________
            Name                         Social Security or other Taxpayer
                                         Identification Number, if any
            Address

____________________________________

____________________________________

____________________________________

                                      A-2
<PAGE>
                                                                       EXHIBIT B

                    INSTRUCTION TO PURCHASE CONTRACT AGENT

[_______________________]

Attention:  Corporate Trust Administration

                  Re:  Securities of AmerUs Group Co. (the "Company")

            The undersigned Holder hereby notifies you that it has delivered to
[_______________], as Collateral Agent, $____ {principal amount at maturity of
Treasury Securities} {principal amount of Debt Securities} {of the appropriate
Applicable Ownership Interest in the {Remarketing} {Tax Event} Treasury
Portfolio} in exchange for an equal Value of {Pledged Debt Securities or the
Pledged Applicable Ownership Interest in the {Remarketing} {Tax Event} Treasury
Portfolio, as the case may be,} {Pledged Treasury Securities} held by the
Collateral Agent, in accordance with Section {4.1} {4.2} of the Pledge
Agreement, dated as of May [______], 2003 (the "Pledge Agreement"), among you,
the Company and the Collateral Agent. The undersigned Holder hereby instructs
you to instruct the Collateral Agent to release to you on behalf of the
undersigned Holder the {Pledged Debt Securities or the Pledged Applicable
Ownership Interest in the {Remarketing} {Tax Event} Treasury Portfolio} {Pledged
Treasury Securities} related to such {Income PRIDES} {Growth PRIDES}.
Capitalized terms used herein but not defined shall have the meaning set forth
or incorporated by reference in the Pledge Agreement.

Date:_______________________________    By:_____________________________________
                                            Name:
                                            Title:
                                            Signature Guarantee:________________

Please print name and address of Registered Holder:

____________________________________     _______________________________________
            Name                         Social Security or other Taxpayer
                                         Identification Number, if any
            Address

____________________________________

____________________________________

____________________________________

                                      B-1
<PAGE>
                                                                       EXHIBIT C

             INSTRUCTION TO CUSTODIAL AGENT REGARDING REMARKETING

                  Re:  Securities of AmerUs Group Co. (the "Company")

      The undersigned hereby notifies you in accordance with Section 4.6(c) of
the Pledge Agreement, dated as of May [__], 2003 (the "Pledge Agreement"), among
the Company, yourselves, as Collateral Agent, Securities Intermediary and
Custodial Agent, and [________________], as Purchase Contract Agent and as
attorney-in-fact for the Holders of Income PRIDES and Growth PRIDES from time to
time, that the undersigned elects to deliver $________ principal amount of Debt
Securities for delivery to the Remarketing Agent on the Business Day immediately
preceding the Remarketing Date for remarketing pursuant to Section 4.6(c) of the
Pledge Agreement. The undersigned will, upon request of the Remarketing Agent,
execute and deliver any additional documents deemed by the Remarketing Agent or
by the Company to be necessary or desirable to complete the sale, assignment and
transfer of the Debt Securities tendered hereby.

      The undersigned hereby instructs you, upon receipt of the Proceeds of such
remarketing from the Remarketing Agent to deliver such Proceeds to the
undersigned in accordance with the instructions indicated herein under "A.
Payment Instructions." The undersigned hereby instructs you, in the event of
Failed Remarketing, upon receipt of the Debt Securities tendered herewith from
the Remarketing Agent, to deliver such Debt Securities to the person(s) and the
address(es) indicated herein under "B. Delivery Instructions."

      With this notice, the undersigned hereby (i) represents and warrants that
the undersigned has full power and authority to tender, sell, assign and
transfer the Debt Securities tendered hereby and that the undersigned is the
record owner of any Debt Securities tendered herewith in physical form or a
participant in The Depository Trust Company ("DTC") and the beneficial owner of
any Debt Securities tendered herewith by book-entry transfer to your account at
DTC and (ii) agrees to be bound by the terms and conditions of Section 4.6(c) of
the Pledge Agreement. Capitalized terms used herein but not defined shall have
the meaning set forth or incorporated by reference in the Pledge Agreement.

Date:_______________________________    By:_____________________________________
                                            Name:
                                            Title:
                                            Signature Guarantee:________________

                                      C-1
<PAGE>
____________________________________     _______________________________________
            Name                         Social Security or other Taxpayer
                                         Identification Number, if any
            Address

____________________________________

____________________________________

____________________________________

                                      C-2
<PAGE>
A.    PAYMENT INSTRUCTIONS

Proceeds of the remarketing should be paid by check in the name of the person(s)
set forth below and mailed to the address set forth below.

Name(s)

________________________________________________________________________________
                                 (Please Print)

Address

________________________________________________________________________________

________________________________________________________________________________
                                 (Please Print)

________________________________________________________________________________
                                   (Zip Code)

________________________________________________________________________________
                          (Tax Identification or Social
                                Security Number)

B.    DELIVERY INSTRUCTIONS

In the event of a Failed Remarketing, Debt Securities that are in physical form
should be delivered to the person(s) set forth below and mailed to the address
set forth below.

Name(s)

________________________________________________________________________________
                                 (Please Print)

Address

________________________________________________________________________________
                                 (Please Print)

________________________________________________________________________________
                                   (Zip Code)

________________________________________________________________________________
                             (Tax Identification or
                            Social Security Number)

In the event of a Failed Remarketing, Debt Securities that are in book-entry
form should be credited to the account at The Depositary Trust Company set forth
below.

                       _______________________________________
                               DTC Account Number

Name of Account
   Party:_______________________________________________________________________

                                      C-3
<PAGE>
                                                                       EXHIBIT D

                    INSTRUCTION TO CUSTODIAL AGENT REGARDING
                           WITHDRAWAL FROM REMARKETING

[___________________], as Custodial Agent
[_______________________________]

Attention: Global Trust Services

                  Re:  Securities of AmerUs Group Co. (the "Company")

            The undersigned hereby notifies you in accordance with Section
4.6(c) of the Pledge Agreement, dated as of May [__], 2003 (the "Pledge
Agreement"), among the Company, yourselves, as Collateral Agent, Securities
Intermediary and Custodial Agent and [________________], as Purchase Contract
Agent and as attorney-in-fact for the Holders of Income PRIDES and Growth PRIDES
from time to time, that the undersigned elects to withdraw the $_____ principal
amount of Debt Securities delivered to the Custodial Agent on ____________ for
remarketing pursuant to Section 4.6(c) of the Pledge Agreement. The undersigned
hereby instructs you to return such Debt Securities to the undersigned in
accordance with the undersigned's instructions. With this notice, the
Undersigned hereby agrees to be bound by the terms and conditions of Section
4.6(c) of the Pledge Agreement. Capitalized terms used herein but not defined
shall have the meaning set forth or incorporated in the Pledge Agreement.

Date:_______________________________    By:_____________________________________
                                            Name:
                                            Title:
                                            Signature Guarantee:________________

____________________________________     _______________________________________
            Name                         Social Security or other Taxpayer
                                         Identification Number, if any
            Address

___________________________________

___________________________________

___________________________________

                                      D-1<PAGE>
                                                                     Exhibit 4.3

                         FORM OF REMARKETING AGREEMENT

         FORM OF REMARKETING AGREEMENT, dated as of May __, 2003 (the
"Remarketing Agreement") by and between AmerUs Group Co. (the "Company"), and
_______ not individually but solely as Purchase Contract Agent and as
attorney-in-fact of the holders of Purchase Contracts (each as defined in the
Purchase Contract Agreement (as defined herein)), and Merrill Lynch, Pierce,
Fenner & Smith Incorporated (the "Remarketing Agent").

                                   WITNESSETH:

         WHEREAS, the Company will issue an aggregate Stated Amount $_____ of
its Securities (the "Securities") under the Purchase Contract Agreement, dated
as of May __, 2003 by and between the Purchase Contract Agent and the Company
(the "Purchase Contract Agreement"); and

         WHEREAS, the Securities will initially consist of _______ Income
PRIDES, each such security consisting of a __% Note initially due May 16,
2008 issued by the Company in the principal amount of $25 (a "Debt Security")
and a Purchase Contract issued by the Company ("Purchase Contract") pursuant to
the Purchase Contract Agreement and _____ Growth PRIDES each such security
consisting of certain U.S. Treasury Securities and a Purchase Contract.

         WHEREAS, the Debt Securities will be pledged pursuant to the Pledge
Agreement (the "Pledge Agreement"), dated as of May __, 2003, by and between the
Company, _______, as Collateral Agent, Securities Intermediary and Custodial
Agent (the "Collateral Agent") and the Purchase Contract Agent, to secure an
Income PRIDE holder's obligations under the related Purchase Contract on the
Purchase Contract Settlement Date; and

         WHEREAS, the Debt Securities of such holders electing to have their
Debt Securities that are not pledged pursuant to the Pledge Agreement
remarketed, or of such Type A Security holders who have elected not to settle
the Purchase Contracts related to their Type A Security from the proceeds of a
Cash Settlement and who have not early settled their Purchase Contracts, will be
remarketed by the Remarketing Agent on the third Business Day immediately
preceding the Purchase Contract Settlement Date; and

         WHEREAS, the applicable interest rate on the Debt Securities will be
reset to the Reset Rate on the Reset Date; and

         WHEREAS, the Company has requested Merrill Lynch, Pierce, Fenner &
Smith Incorporated ("Merrill Lynch") to act as the Reset Agent and as the
Remarketing Agent and as such to perform the services described herein; and

         WHEREAS, Merrill Lynch is willing to act as Reset Agent and Remarketing
Agent and as such to perform such duties on the terms and conditions expressly
set forth herein;

         NOW, THEREFORE, for and in consideration of the covenants herein made,
and subject to the conditions herein set forth, the parties hereto agree as
follows:
<PAGE>
      Section 1. Definitions. Capitalized terms used and not defined in this
Agreement shall have the meanings assigned to them in the Purchase Contract
Agreement or, if not therein stated, the Pledge Agreement.

      Section 2. Appointment and Obligations of Reset Agent and Remarketing
Agent; Remarketing.

      (a) Appointment and Obligations. The Company hereby appoints Merrill
Lynch, and Merrill Lynch hereby accepts such appointment, (i) as the Reset Agent
to determine, and in consultation with the Company and in the manner provided
for in the Debt Securities and the Purchase Contract Agreement, the Reset Rate
and (ii) as the exclusive Remarketing Agent to remarket the Debt Securities as
provided in Section 2(b), pursuant to the Remarketing Underwriting Agreement
attached hereto as Exhibit A, among the Company, the Purchase Contract Agent and
the Remarketing Agent (with such changes as the Company, the Purchase Contract
Agent and the Remarketing Agent may agree upon, it being understood that changes
may be necessary in the representations, warranties, covenants and other
provisions of the Remarketing Underwriting Agreement due to changes in law or
facts and circumstances). Pursuant to the Remarketing Underwriting Agreement,
the Remarketing Agent, either as the sole remarketing underwriter or as the
representative of a syndicate including the Remarketing Agent and one or more
other remarketing underwriters designated by the Remarketing Agent, will agree,
subject to the terms and conditions set forth therein, that the Remarketing
Agent and any such other remarketing underwriters will purchase, severally, the
Debt Securities to be sold by the holder or holders of Debt Securities or Income
PRIDES on the dates and at the prices described in Section 2(b).

      (b) Remarketing Procedures.

            (1) On each Reset Announcement Date, the Agent shall give Holders of
Debt Securities (whether held as a component of Income PRIDES or separately with
such Debt Securities held separately being referred to as "Separate Notes")
notice of the remarketing to occur on the associated Remarketing Date. The
Company or the Agent, at the Company's request, shall request not later than
seven nor more than 15 calendar days prior to any Remarketing Date, that the
Clearing Agency notify the Clearing Agency participants of such Remarketing
Date. The Agent shall notify, by 10:00 a.m., New York City time, on the third
Business Day preceding such Remarketing Date, the Remarketing Agent and the
Collateral Agent of the aggregate principal amount of Debt Securities included
in the Income PRIDES, which shall be remarketed. On the third Business Day
preceding such Remarketing Date, no later than by 10:00 a.m., New York City
time, pursuant to the terms of the Pledge Agreement, the Custodial Agent will
notify the Remarketing Agent of the aggregate principal amount of Separate Notes
to be remarketed. No later than 10:00 a.m., New York City time, on the Business
Day immediately preceding such Remarketing Date, the Collateral Agent and the
Custodial Agent, pursuant to the terms of the Pledge Agreement, will deliver for
remarketing to the Remarketing Agent all Debt Securities to be remarketed. Upon
receipt of such notice from the Agent and the Custodial Agent and such Debt
Securities from the Collateral Agent and the Custodial Agent, the Remarketing
Agent will, on such Remarketing Date, use its reasonable efforts to sell such
Debt Securities on such date at the Reset Rate. The sale of the Debt Securities
will be settled on or prior to the third Business Day following such Remarketing
Date on which the Debt Securities were successfully remarketed. The

                                       2
<PAGE>
Remarketing Agent will use the proceeds from a successful remarketing to
purchase the Remarketing Treasury Portfolio. On or prior to the third Business
Day following the Remarketing Date on which the Debt Securities are successfully
remarketed, the Remarketing Agent shall deliver the Remarketing Treasury
Portfolio to the Agent, which shall thereupon deliver the Remarketing Treasury
Portfolio to the Collateral Agent. The Collateral Agent, for the benefit of the
Company, will thereupon apply the Remarketing Treasury Portfolio, in accordance
with the Pledge Agreement, to secure such Holders' obligations under the
Purchase Contracts. In the event of a successful remarketing pursuant, the
Remarketing Agent will deduct the Remarketing Fee after allowing for the
Remarketing Treasury Portfolio Purchase Price. The Remarketing Agent will remit
(1) the portion of the proceeds from the remarketing attributable to the
Separate Notes to the holders of Separate Notes that were remarketed and (2) the
remaining portion of the proceeds, less those proceeds used to purchase the
Remarketing Treasury Portfolio, to the Agent for the benefit of the Holders of
the Debt Securities included in Income PRIDES that were remarketed, all
determined on a pro rata basis, in each case, on or prior to the third Business
Day following the Remarketing Date on which the Notes were successfully
remarketed. Holders whose Notes are so remarketed will not otherwise be
responsible for the payment of any Remarketing Fee in connection therewith.

            (2) In the event of any Failed Remarketing on any Remarketing Date,
(i) the Company shall publish a notice of such Failed Remarketing in an
Authorized Newspaper within two Business Days immediately following such
Remarketing Date; and (ii) the Debt Securities shall be returned to the
Collateral Agent and the Custodial Agent.

      Section 3. Fees. The Reset Agent shall receive from the Company a
reasonable and customary fee for acting as the Reset Agent (the "Reset Agent
Fee"); provided, however, that if the Remarketing Agent shall also act as the
Reset Agent, then the Reset Agent shall not be entitled to receive any such
Reset Agent Fee. Payment of such Reset Agent Fee shall be made by the Company on
the third Business Day immediately preceding the Purchase Contract Settlement
Date in immediately available funds or, upon the instructions of the Reset
Agent, by certified or official bank check or checks or by wire transfer.

      Section 4. Replacement and Resignation of Remarketing Agent and Reset
Agent. (a) The Company may in its absolute discretion replace Merrill Lynch as
the Remarketing Agent and/or as the Reset Agent in its capacity hereunder by
giving notice prior to 3:00 p.m., New York City time, on the eleventh Business
Day immediately prior to any Remarketing Date or the Purchase Contract
Settlement Date. Any such replacement shall become effective upon the Company's
appointment of a successor to perform the services that would otherwise be
performed hereunder by the Remarketing Agent and/or the Reset Agent. Upon
providing such notice, the Company shall use all reasonable efforts to appoint
such a successor and to enter into a remarketing agreement with such successor
as soon as reasonably practicable.

      (b) Merrill Lynch may resign at any time and be discharged from its duties
and obligations hereunder as the Remarketing Agent and/or as the Reset Agent by
giving notice prior to 3:00 p.m., New York City time, on the eleventh Business
Day immediately prior to any Remarketing Date or the Purchase Contract
Settlement Date. Any such resignation shall become effective upon the Company's
appointment of a successor to perform the services that would otherwise be
performed hereunder by the Remarketing Agent and/or the Reset Agent. Upon

                                       3
<PAGE>
receiving notice from the Remarketing Agent and/or the Reset Agent that it
wishes to resign hereunder, the Company shall appoint such a successor and enter
into a remarketing agreement with it as soon as reasonably practicable.

      Section 5. Dealing in the Securities. The Remarketing Agent, when acting
hereunder or under the Remarketing Underwriting Agreement or acting in its
individual or any other capacity, may, to the extent permitted by law, buy,
sell, hold or deal in any of the Debt Securities. With respect to any Debt
Securities owned by it, the Remarketing Agent may exercise any vote or join in
any action with like effect as if it did not act in any capacity hereunder. The
Remarketing Agent, in its individual capacity, either as principal or agent, may
also engage in or have an interest in any financial or other transaction with
the Company as freely as if it did not act in any capacity hereunder.

      Section 6. Registration Statement and Prospectus. In connection with the
Remarketing, if and to the extent required (in the opinion of counsel for either
the Remarketing Agent or the Company) by applicable law, regulations or
interpretations in effect at the time of such Remarketing, the Company shall use
its reasonable efforts to have a registration statement relating to the Debt
Securities effective under the Securities Act of 1933 by the third Business Day
immediately preceding each Remarketing Date, shall furnish a current prospectus
and/or prospectus supplement to be used in each remarketing by the remarketing
underwriter or underwriters under the Remarketing Underwriting Agreement, and
shall pay all expenses relating thereto.

      Section 7. Conditions to the Remarketing Agent's Obligations. (a) The
obligations of the Remarketing Agent and any other remarketing underwriters to
purchase and remarket the Debt Securities, as the case may be, shall be subject
to the terms and conditions of the Remarketing Underwriting Agreement.

      (b) If at any time during the term of this Agreement, any Event of Default
(as defined therein) under the Indenture, or event that with the passage of time
or the giving of notice or both would become an Event of Default under the
Indenture, has occurred and is continuing, then the obligations and duties of
the Remarketing Agent under this Agreement shall be suspended until such default
or event has been cured. The Company will cause the Trustee to give the
Remarketing Agent notice of all such defaults and events of which the Trustee is
aware.

      Section 8. Termination of Remarketing Agreement. This Agreement shall
terminate as to the Remarketing Agent on the effective date of its replacement
pursuant to Section 4(a) hereof or pursuant to Section 4(b) hereof.
Notwithstanding any such termination, the obligations set forth in Section 2
(insofar as such Section relates to the payment of the Remarketing Fee) and
Section 3 hereof shall survive and remain in full force and effect until all
amounts payable under such Sections shall have been paid in full.

      Section 9. Remarketing Agent's Performance; Duty of Care. The duties and
obligations of the Remarketing Agent hereunder shall be determined solely by the
express provisions of this Agreement and the Remarketing Underwriting Agreement.

      Section 10. Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York.

                                       4
<PAGE>
      Section 11. Term of Agreement. Unless otherwise terminated in accordance
with the provisions hereof and except as otherwise provided herein, this
Agreement shall remain in full force and effect from the date hereof until the
first day thereafter on which no Debt Securities are outstanding.

      Section 12. Successors and Assigns. The rights and obligations of the
Company hereunder may not be assigned or delegated to any other person without
the prior written consent of Merrill Lynch as the Remarketing Agent and the
Purchase Contract Agent. The rights and obligations of Merrill Lynch as the
Remarketing Agent and/or as the Reset Agent hereunder may not be assigned or
delegated to any other person without the prior written consent of the Company.
This Agreement shall inure to the benefit of and be binding upon the Company and
Merrill Lynch as the Remarketing Agent and/or as the Reset Agent and their
respective successors and assigns. The terms "successors" and "assigns" shall
not include any purchaser of Securities merely because of such purchase.

      Section 13. Headings. Section headings have been inserted in this
Agreement as a matter of convenience of reference only, and it is agreed that
such section headings are not a part of this Agreement and will not be used in
the interpretation of any provision of this Agreement.

      Section 14. Severability. If any provision of this Agreement shall be held
or deemed to be or shall, in fact, be invalid, inoperative or unenforceable as
applied in any particular case in any or all jurisdictions because it conflicts
with any provisions of any constitution, statute, rule or public policy or for
any other reason, such circumstances shall not have the effect of rendering the
provision in question invalid, inoperative or unenforceable in any other case,
circumstances or jurisdiction, or of rendering any other provision or provisions
of this Agreement invalid, inoperative or unenforceable to any extent
whatsoever.

      Section 15. Counterparts. This Agreement may be executed in counterparts,
each of which shall be regarded as an original and all of which shall constitute
one and the same document.

      Section 16. Amendments. This Agreement may be amended by any instrument in
writing signed by the parties hereto.

      Section 17. Notices. Unless otherwise specified, any notices, requests,
consents or other communications given or made hereunder or pursuant hereto
shall be made in writing or transmitted by any standard form of
telecommunication, including telephone, telegraph or telecopy, and confirmed in
writing. All written notices and confirmations of notices by telecommunication
shall be deemed to have been validly given or made when delivered or mailed,
registered or certified mail, return receipt requested and postage prepaid. All
such notices, requests, consents or other communications shall be addressed as
follows: if to the Company, to AmerUs Group Co., 699 Walnut Street, Des Moines,
Iowa 50309, Attention: _________; if to the Remarketing Agent or Reset Agent,
_______; and if to the Purchase Contract Agent, _______, or to such other
address as any of the above shall specify to the other in writing.

         IN WITNESS WHEREOF, each of the Company, the Remarketing Agent and the
Purchase Contract Agent has caused this Agreement to be executed in its name and
on its behalf by one of its duly authorized officers as of the date first above
written.

                                       5
<PAGE>
                                           AMERUS GROUP CO.

                                           By:_________________________________
                                               Name:
                                               Title:

CONFIRMED AND ACCEPTED:

__________________________________

__________________________________

By:_______________________________
     Authorized Signatory

not individually but solely as Purchase
Contract Agent and as attorney-in-fact
for the holders of the Purchase Contracts

By:_______________________________
    Name:
    Title:

                                       6
<PAGE>
                                              Exhibit A to Remarketing Agreement

                   FORM OF REMARKETING UNDERWRITING AGREEMENT

         ____________ (the "Remarketing Underwriter") hereby agrees, subject to
the terms and conditions herein set forth or incorporated herein, to purchase
the Debt Securities as set forth in Schedule I hereto, that have been tendered
by the holders of the Income PRIDES for sale on _______.

      1. Definitions. Capitalized terms used and not defined in this Agreement
shall have the meanings assigned to them in the purchase contract agreement (the
"Purchase Contract Agreement"), the pledge agreement (the "Pledge Agreement"),
the underwriting agreement, dated _______, between the Company and _______, as
underwriters with respect to the issuance and sale of the Securities (the
"Underwriting Agreement"), and the Indenture (For Unsecured Debt Securities
Series __), dated _____, between _______ and the Company (the "Indenture").

      2. Registration Statement and Prospectus. If required (in the opinion of
counsel to either the Remarketing Underwriter or the Company) by applicable law,
the Company has filed with the Securities and Exchange Commission, and there has
become effective, a registration statement on Form S-3 (No. 333- ____),
including a prospectus, relating to the Debt Securities. Such registration
statement, as amended to the date of this Agreement, is hereinafter referred to
as the "Registration Statement", the prospectus included in the Registration
Statement is hereinafter referred to as the "Basic Prospectus" and the Basic
Prospectus, as amended or supplemented to the date of this Agreement to relate
to the Debt Securities and to the remarketing of the Debt Securities, is
hereinafter referred to as the "Final Prospectus" (including in each case all
documents incorporated by reference).

      3. Provisions Incorporated by Reference.

            (a) Subject to Section 3(b), the provisions of Sections ____ and
____ of the Underwriting Agreement shall be incorporated, as applicable into
this Agreement and made applicable to the obligations of the Remarketing
Underwriter, except as explicitly amended hereby.

            (b) With respect to the provisions of the Underwriting Agreement
incorporated herein, for the purposes hereof, (i) all references therein to the
"Underwriter" or "Underwriters" or the "Representative" or "Representatives", as
the case may be, shall be deemed to refer to the Remarketing Underwriter; (ii)
all references therein to the "Securities" which are the subject thereof shall
be deemed to refer to the Debt Securities as defined herein; (iii) all
references therein to the "Closing Date" shall be deemed to refer to the
Remarketing Closing Date specified in Schedule I hereto (the "Remarketing
Closing Date"); (iv) all references therein to the "Registration Statement", the
"Basic Prospectus" and the "Final Prospectus" shall be deemed to refer to the
Registration Statement, the Basic Prospectus and the Final Prospectus,
respectively, as defined herein.

      4. Purchase and Sale; Remarketing Underwriting Fee. Subject to the terms
and conditions and in reliance upon the representations and warranties herein
set forth or incorporated herein, the Remarketing Underwriter agrees to purchase
from the registered holder or holders thereof in the manner specified in Section
5 hereof, the principal amount of remarketed Debt

                                       7
<PAGE>
Securities set forth in Schedule I hereto at a purchase price not less than [
[100%] OF THE AGGREGATE PRINCIPAL AMOUNT OF SUCH DEBT SECURITIES, PLUS ANY
ACCRUED AND UNPAID INTEREST THEREON.] In connection therewith, the registered
holder or holders thereof agree, in the manner specified in Section 5 hereof, to
pay to the Remarketing Underwriter the Remarketing Fee, from any amount received
from such remarketing in excess of the aggregate principal amount of such
remarketed Debt Securities, plus any accrued and unpaid interest.

      5. Delivery and Payment. Delivery of payment for the remarketed Debt
Securities and payment of the Remarketing Underwriting Fee shall be made on the
Remarketing Closing Date at the location and time specified in Schedule I hereto
(or such later date not later than five business days after such date as the
Remarketing representatives shall designate), which date and time may be
postponed by agreement between the Remarketing Underwriter, the Company, and the
registered holder or holders thereof. Delivery of the remarketed Debt Securities
and payment of the Remarketing Underwriting Fee shall be made to the Remarketing
Underwriter [to or upon the order of the [registered holder or holders of the
remarketed Debt Securities] by certified or official bank check or checks drawn
on or by a New York Clearing House bank and payable in immediately available
funds] [in immediately available funds by wire transfer to an account or
accounts designated by the [Company] [registered holder or holders of the
remarketed Debt Securities]] or, if the remarketed Debt Securities are
represented by a Global Security, by any method of transfer agreed upon by the
Remarketing Underwriter and the Depositary for the Debt Securities under the
Indenture.

      [It is understood that any registered holder or, if the Debt Securities
are represented by a Global Security, any beneficial owner, that has an account
at the Remarketing Underwriter and tenders its Debt Securities through such
account will not be required to pay any fee or commission to the Remarketing
Underwriter.]

      If the Debt Securities are not represented by a Global Security,
certificates for the Debt Securities shall be registered in such names and
denominations as the Remarketing Underwriter may request not less than three
full business days in advance of the Remarketing Closing Date, and the Company,
and the [registered holder or holders thereof] agree to have such certificates
available for inspection, packaging and checking by the Remarketing Underwriter
in New York, New York not later than 1:00 p.m. on the Business Day prior to the
Remarketing Closing Date.

      6. Notices. Unless otherwise specified, any notices, requests, consents or
other communications given or made hereunder or pursuant hereto shall be made in
writing or transmitted by any standard form of telecommunication, including
telephone, telegraph or telecopy, and confirmed in writing. All written notices
and confirmations of notices by telecommunication shall be deemed to have been
validly given or made when delivered or mailed, registered or certified mail,
return receipt requested and postage prepaid. All such notices, requests,
consents or other communications shall be addressed as follows: if to the
Company, to AmerUs Group Co., 699 Walnut Street, Des Moines, IA 50309,
Attention: ________; if to the Remarketing Agent or Reset Agent, to _______; and
if to the Purchase Contract Agent, to _______, or to such other address as any
of the above shall specify to the other in writing.

                                       8
<PAGE>
      If the foregoing is in accordance with your understanding of our
agreement, please sign and return to us the enclosed duplicate hereof, whereupon
this letter and your acceptance shall represent a binding agreement among the
Company and the several Remarketing Underwriters.

                                          Very truly yours,

                                          AMERUS GROUP CO.

                                          By:________________________________
                                              Name:
                                              Title:

CONFIRMED AND ACCEPTED:

__________________________________

__________________________________

By:_______________________________
     Authorized Signatory

not individually but solely as Purchase
Contract Agent and as attorney-in-fact
for the holders of the Purchase Contracts

By:_______________________________
      Name:
      Title:

                                       9
<PAGE>
                                                                      SCHEDULE I

Title of Securities:  ___% Series __ Senior Notes due ____

Principal Amount of Securities:  $

Underwriting Agreement, dated as of _________ __, ____, between the Company and
 _______________________________________

Remarketing [Underwriting] Fee: _____ %  ($_____)

Remarketing Closing Date, Time and Location:  _______________________

                                       10

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