Document:

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                                AMERUS GROUP CO.

                                       AND

                       WACHOVIA BANK, NATIONAL ASSOCIATION
                           AS PURCHASE CONTRACT AGENT

                           PURCHASE CONTRACT AGREEMENT

                            DATED AS OF MAY 28, 2003

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ARTICLE I        DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION......................................   1

         SECTION 1.1      DEFINITIONS.........................................................................   1

         SECTION 1.2      COMPLIANCE CERTIFICATES AND OPINIONS................................................  13

         SECTION 1.3      FORM OF DOCUMENTS DELIVERED TO AGENT................................................  14

         SECTION 1.4      ACTS OF HOLDERS; RECORD DATES.......................................................  15

         SECTION 1.5      NOTICES.............................................................................  16

         SECTION 1.6      NOTICE TO HOLDERS; WAIVER...........................................................  17

         SECTION 1.7      EFFECT OF HEADINGS AND TABLE OF CONTENTS............................................  17

         SECTION 1.8      SUCCESSORS AND ASSIGNS..............................................................  17

         SECTION 1.9      SEPARABILITY CLAUSE.................................................................  17

         SECTION 1.10     BENEFITS OF AGREEMENT...............................................................  17

         SECTION 1.11     GOVERNING LAW.......................................................................  18

         SECTION 1.12     LEGAL HOLIDAYS......................................................................  18

         SECTION 1.13     COUNTERPARTS........................................................................  18

         SECTION 1.14     INSPECTION OF AGREEMENT.............................................................  18

ARTICLE II       CERTIFICATE FORMS............................................................................  18

         SECTION 2.1      FORMS OF CERTIFICATES GENERALLY.....................................................  18

         SECTION 2.2      FORM OF AGENT'S CERTIFICATE OF AUTHENTICATION.......................................  19

ARTICLE III      THE SECURITIES...............................................................................  20

         SECTION 3.1      TITLE AND TERMS; DENOMINATIONS......................................................  20

         SECTION 3.2      RIGHTS AND OBLIGATIONS EVIDENCED BY THE CERTIFICATES................................  20

         SECTION 3.3      EXECUTION, AUTHENTICATION, DELIVERY AND DATING......................................  21

         SECTION 3.4      TEMPORARY CERTIFICATES..............................................................  21

         SECTION 3.5      REGISTRATION; REGISTRATION OF TRANSFER AND EXCHANGE.................................  22

         SECTION 3.6      BOOK-ENTRY INTERESTS................................................................  23

         SECTION 3.7      NOTICES TO HOLDERS..................................................................  24

         SECTION 3.8      APPOINTMENT OF SUCCESSOR CLEARING AGENCY............................................  24

         SECTION 3.9      DEFINITIVE CERTIFICATES.............................................................  24
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         SECTION 3.10     MUTILATED, DESTROYED, LOST AND STOLEN CERTIFICATES..................................  24

         SECTION 3.11     PERSONS DEEMED OWNERS...............................................................  25

         SECTION 3.12     CANCELLATION........................................................................  26

         SECTION 3.13     ESTABLISHMENT OR REESTABLISHMENT OF GROWTH PRIDES...................................  26

         SECTION 3.14     REESTABLISHMENT OF INCOME PRIDES....................................................  28

         SECTION 3.15     TRANSFER OF COLLATERAL UPON OCCURRENCE OF TERMINATION EVENT.........................  30

         SECTION 3.16     NO CONSENT TO ASSUMPTION............................................................  31

ARTICLE IV       THE DEBT SECURITIES..........................................................................  31

         SECTION 4.1      PAYMENT OF INTEREST; RIGHTS TO INTEREST PRESERVED; INTEREST RATE RESET; NOTICE......  31

         SECTION 4.2      NOTICE AND VOTING...................................................................  33

         SECTION 4.3      SUBSTITUTION OF A TREASURY PORTFOLIO FOR DEBT SECURITIES............................  33

         SECTION 4.4      CONSENT TO TREATMENT FOR TAX PURPOSES...............................................  34

ARTICLE V        THE PURCHASE CONTRACTS.......................................................................  35

         SECTION 5.1      PURCHASE OF SHARES OF COMMON STOCK..................................................  35

         SECTION 5.2      CONTRACT ADJUSTMENT PAYMENTS........................................................  36

         SECTION 5.3      DEFERRAL OF PAYMENT DATES FOR CONTRACT ADJUSTMENT PAYMENTS..........................  37

         SECTION 5.4      PAYMENT OF PURCHASE PRICE...........................................................  38

         SECTION 5.5      ISSUANCE OF SHARES OF COMMON STOCK..................................................  42

         SECTION 5.6      ADJUSTMENT OF SETTLEMENT RATE.......................................................  43

         SECTION 5.7      NOTICE OF ADJUSTMENTS AND CERTAIN OTHER EVENTS......................................  47

         SECTION 5.8      TERMINATION EVENT; NOTICE...........................................................  48

         SECTION 5.9      EARLY SETTLEMENT....................................................................  48

         SECTION 5.10     NO FRACTIONAL SHARES................................................................  51

         SECTION 5.11     CHARGES AND TAXES...................................................................  52

ARTICLE VI       REMEDIES.....................................................................................  52

         SECTION 6.1      UNCONDITIONAL RIGHT OF HOLDERS TO RECEIVE
                          CONTRACT ADJUSTMENT PAYMENTS AND TO
                          PURCHASE COMMON STOCK...............................................................  52
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         SECTION 6.2      RESTORATION OF RIGHTS AND REMEDIES..................................................  52

         SECTION 6.3      RIGHTS AND REMEDIES CUMULATIVE......................................................  53

         SECTION 6.4      DELAY OR OMISSION NOT WAIVER........................................................  53

         SECTION 6.5      UNDERTAKING FOR COSTS...............................................................  53

         SECTION 6.6      WAIVER OF STAY OR EXTENSION LAWS....................................................  53

ARTICLE VII      THE AGENT....................................................................................  54

         SECTION 7.1      CERTAIN DUTIES AND RESPONSIBILITIES.................................................  54

         SECTION 7.2      NOTICE OF DEFAULT...................................................................  55

         SECTION 7.3      CERTAIN RIGHTS OF AGENT.............................................................  55

         SECTION 7.4      NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES..............................  56

         SECTION 7.5      MAY HOLD SECURITIES.................................................................  56

         SECTION 7.6      MONEY HELD IN CUSTODY...............................................................  56

         SECTION 7.7      COMPENSATION AND REIMBURSEMENT......................................................  56

         SECTION 7.8      CORPORATE AGENT REQUIRED; ELIGIBILITY...............................................  57

         SECTION 7.9      RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR...................................  57

         SECTION 7.10     ACCEPTANCE OF APPOINTMENT BY SUCCESSOR..............................................  58

         SECTION 7.11     MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO BUSINESS.........................  59

         SECTION 7.12     PRESERVATION OF INFORMATION; COMMUNICATIONS TO HOLDERS..............................  59

         SECTION 7.13     NO OBLIGATIONS OF AGENT.............................................................  59

         SECTION 7.14     TAX COMPLIANCE......................................................................  60

ARTICLE VIII     SUPPLEMENTAL AGREEMENTS......................................................................  60

         SECTION 8.1      SUPPLEMENTAL AGREEMENTS WITHOUT CONSENT OF HOLDERS..................................  60

         SECTION 8.2      SUPPLEMENTAL AGREEMENTS WITH CONSENT OF HOLDERS.....................................  61

         SECTION 8.3      EXECUTION OF SUPPLEMENTAL AGREEMENTS................................................  62

         SECTION 8.4      EFFECT OF SUPPLEMENTAL AGREEMENTS...................................................  62

         SECTION 8.5      REFERENCE TO SUPPLEMENTAL AGREEMENTS................................................  62

ARTICLE IX       CONSOLIDATION, MERGER, SALE OR CONVEYANCE....................................................  62
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         SECTION 9.1      COVENANT NOT TO MERGE, CONSOLIDATE, SELL OR CONVEY PROPERTY EXCEPT UNDER
                          CERTAIN CONDITIONS .................................................................  62

         SECTION 9.2      RIGHTS AND DUTIES OF SUCCESSOR ENTITY...............................................  63

         SECTION 9.3      OPINION OF COUNSEL GIVEN TO AGENT...................................................  63

ARTICLE X        COVENANTS....................................................................................  63

         SECTION 10.1     PERFORMANCE UNDER PURCHASE CONTRACTS................................................  63

         SECTION 10.2     MAINTENANCE OF OFFICE OR AGENCY.....................................................  64

         SECTION 10.3     COMPANY TO RESERVE COMMON STOCK.....................................................  64

         SECTION 10.4     COVENANTS AS TO COMMON STOCK........................................................  64

EXHIBIT A
EXHIBIT B

EXHIBIT C
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         PURCHASE CONTRACT AGREEMENT, dated as of May 28, 2003, between AmerUs
Group Co., an Iowa corporation (the "Company"), and Wachovia Bank, National
Association, acting as purchase contract agent and attorney-in-fact for the
Holders of Securities from time to time (in any one or more of such capacities,
the "Agent").

                                    RECITALS

         The Company has duly authorized the execution and delivery of this
Agreement and the Certificates evidencing the Securities.

         All things necessary to make the Purchase Contracts, when the
Certificates are executed by the Company and authenticated, executed on behalf
of the Holders and delivered by the Agent, as provided in this Agreement, the
valid obligations of the Company and the Holders, and to constitute these
presents a valid agreement of the Company, in accordance with its terms, have
been done.

                                   WITNESSETH:

         For and in consideration of the premises and the purchase of the
Securities by the Holders thereof, it is mutually agreed as follows:

                                    ARTICLE I

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

SECTION 1.1       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; and nouns and pronouns of the masculine gender
                  include the feminine and neuter genders;

         (b)      all accounting terms not otherwise defined herein have the
                  meanings assigned to them in accordance with accounting
                  principles generally accepted in the United States;

         (c)      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; and

         (d)      the following terms have the meanings given to them in this
                  Section 1.1(d):

         "Act" when used with respect to any Holder, has the meaning specified
in Section 1.4.

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         "Affiliate" has the same meaning as given to that term in Rule 405 of
the Securities Act of 1933, as amended, or any successor rule thereunder.

         "Agent" means the Person named as the "Agent" in the first paragraph of
this instrument until a successor Agent shall have become such pursuant to the
applicable provisions of this Agreement, and thereafter "Agent" shall mean such
Person.

         "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.

         "Applicable Benchmark Treasury" on a particular determination date
shall mean direct obligations of the United States (which may be obligations
traded on a when-issued basis only) having a maturity comparable to the
remaining term to maturity of the Debt Securities, after giving effect to any
extension of the maturity date of the Debt Securities on the Reset Date, as
applicable, as agreed upon by the Company and the Reset Agent. The yield for the
Applicable Benchmark Treasury will be the bid side yield displayed at 10:00
A.M., New York City time, on the third Business Day immediately preceding the
Reset Date in the Telerate system (or if the Telerate system is (a) no longer
available on such Business Day or (b) in the opinion of the Reset Agent (after
consultation with the Company) no longer an appropriate system from which to
obtain such yield, such other nationally recognized quotation system as, in the
opinion of the Reset Agent (after consultation with the Company), is
appropriate). If such yield is not so displayed, the yield for the Applicable
Benchmark Treasury shall be, as calculated by the Reset Agent, the yield to
maturity for the Applicable Benchmark Treasury, expressed as a bond equivalent
on the basis of a year of 365 or 366 days, as applicable, and applied on a daily
basis, and computed by taking the arithmetic mean of the secondary market bid
rates, as of 10:30 A.M., New York City time, on the third Business Day
immediately preceding the Reset Date of three leading United States government
securities dealers selected by the Reset Agent (after consultation with the
Company) (which may include the Reset Agent or an affiliate thereof).

         "Applicable Market Value" has the meaning specified in Section 5.1.

         "Applicable Ownership Interest" means, with respect to the U.S.
Treasury Securities in a Treasury Portfolio contained in an Income PRIDES, (1)
for a Remarketing Treasury Portfolio, (i) a 1/40, or 2.5%, undivided beneficial
ownership interest in a $1,000 principal or interest amount of a principal or
interest strip in a U.S. Treasury Security included in the Treasury Portfolio
that matures on or prior to August 15, 2006, (ii) for the originally scheduled
quarterly interest payment date on the Debt Securities that would have occurred
on August 16, 2006 if no remarketing had occurred, an undivided beneficial
ownership interest to be determined by the Reset Agent in a $1,000 principal or
interest amount of a principal or interest strip in a U.S. Treasury Security
maturing on or prior to August 16, 2006, and (iii) if the Reset Date occurs
prior to May 16, 2006, for the originally scheduled quarterly interest payment
date on the Debt Securities that would have occurred on May 16, 2006 if no
remarketing had occurred, an undivided beneficial ownership interest to be
determined by the reset agent, in a $1,000 principal or interest amount of a
principal or interest

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strip in a U.S. Treasury Security maturing on or prior to May 16, 2006, or (2)
for a Tax Event Treasury Portfolio, (i) a 1/40, or 2.5%, undivided beneficial
ownership interest in a $1,000 principal or interest amount of a principal or
interest strip in a U.S. Treasury Security included in the Treasury Portfolio
that matures on or prior to August 16, 2006, and (ii) for each scheduled
interest payment date on the Debt Securities that occurs after the Tax Event
Redemption Date and on or prior to August 16, 2006, a 0.034375% undivided
beneficial ownership interest in a $1,000 principal or interest amount of a
principal or interest strip in a U.S. Treasury Security maturing on or prior to
that interest payment date.

         "Applicable Principal Amount" means (i) on any date prior to the Reset
Date or, if there is a Failed Remarketing, prior to August 16, 2006, the
aggregate principal amount of Debt Securities that are components of Income
PRIDES on such date or (ii) on any date on or after the Reset Date or, if there
is a Failed Remarketing, on or after August 16, 2006, the aggregate principal
amount of the Debt Securities outstanding on such date.

         "Authorized Newspaper" means a newspaper in the English language of
general circulation in the City of New York and generally published on each
Business Day. As of the date of this Agreement, the Company anticipates that for
purposes of each Remarketing Announcement Date, the Authorized Newspaper will be
the Wall Street Journal.

         "Authorized Officer" means the Chairman of the Board, the President,
any Vice President, the Treasurer, any Assistant Treasurer, or any other officer
or agent of the Company duly authorized by the Board of Directors to act in
respect of matters relating to this Agreement.

         "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.

         "Beneficial Owner" means, with respect to a Book-Entry Interest, a
Person who is the beneficial owner of such Book-Entry Interest as reflected on
the books of the Clearing Agency or on the books of a Person maintaining an
account with such Clearing Agency (directly as a Clearing Agency Participant or
as an indirect participant, in each case in accordance with the rules of such
Clearing Agency).

         "Board of Directors" means the board of directors of the Company or a
duly authorized committee of that board.

         "Board Resolution" means one or more resolutions of the Board of
Directors, a copy of which has been certified by the Secretary or an Assistant
Secretary of the Company to have been duly adopted by the Board of Directors and
to be in full force and effect on the date of such certification and delivered
to the Agent.

         "Book-Entry Interest" means a beneficial interest in a Global
Certificate, ownership and transfers of which shall be maintained and made
through book entries by a Clearing Agency as described in Section 3.6.

         "Business Day" means any day other than a Saturday, Sunday or any other
day on which banking institutions and trust companies in New York City (in the
State of New York) are permitted or required by any applicable law to close.

         "Cash Merger" has the meaning specified in Section 5.9(b).

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         "Cash Merger Early Settlement" has the meaning specified in Section
5.9(b).

         "Cash Merger Early Settlement Date" has the meaning specified in
Section 5.9(b).

         "Cash Settlement" has the meaning specified in Section 5.4(a)(i).

         "Certificate" means an Income PRIDES Certificate or a Growth PRIDES
Certificate.

         "Clearing Agency" means an organization registered as a "Clearing
Agency" pursuant to Section 17A of the Exchange Act that is acting as a
depositary for the Securities and in whose name, or in the name of a nominee of
that organization, shall be registered as a Global Certificate and which shall
undertake to effect book entry transfers and pledges of the Securities.

         "Clearing Agency Participant" means a broker, dealer, bank, other
financial institution or other Person for whom from time to time the Clearing
Agency effects book entry transfers and pledges of securities deposited with the
Clearing Agency.

         "Closing Price" has the meaning specified in Section 5.1.

         "Collateral" has the meaning specified in Section 2.1 of the Pledge
Agreement.

         "Collateral Agent" means BNY Midwest Trust Company, as Collateral Agent
under the Pledge Agreement until a successor Collateral Agent shall have become
such pursuant to the applicable provisions of the Pledge Agreement, and
thereafter "Collateral Agent" shall mean the Person who is then the Collateral
Agent thereunder.

         "Collateral Substitution" means the substitution of the pledged
components of one type of Security for pledged components of the other type of
Security in connection with establishment or reestablishment of Growth PRIDES or
Income PRIDES, as described in Sections 3.13 and 3.14 hereof.

         "Common Stock" means the Common Stock, without par value, of the
Company.

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

         "Company Certificate" means a certificate signed by an Authorized
Officer and delivered to the Agent.

         "Contract Adjustment Payments" means the amounts payable by the Company
in respect of each Purchase Contract issued in connection with the Income PRIDES
and the Growth PRIDES, which amounts shall be equal to 0.75% per annum of the
Stated Amount; computed on the basis of a 360-day year of twelve 30-day months,
plus any Deferred Contract Adjustment Payments accrued pursuant to Section 5.3.

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         "Corporate Trust Office" means the corporate trust office of the Agent
at which, at any particular time, its corporate trust business shall be
principally administered, which office at the date hereof is located at 401 S.
Tryon Street, 12th Floor, Charlotte, N.C. 28288-1179.

         "Coupon Rate" with respect to a Debt Security means the percentage rate
per annum at which such Debt Security will bear interest.

         "Current Market Price" has the meaning specified in Section 5.6(a)(8).

         "Debt Securities" means the series of debt securities of the Company to
be designated "Senior Notes initially due 2008" issued under the Indenture.

         "Default" means a default by the Company in any of its obligations
under this Agreement.

         "Deferred Contract Adjustment Payments" has the meaning specified in
Section 5.3.

         "Depositary" means, initially, DTC until another Clearing Agency
becomes its successor.

         "DTC" means The Depository Trust Company, the initial Clearing Agency.

         "Early Settlement" has the meaning specified in Section 5.9(a).

         "Early Settlement Amount" has the meaning specified in Section 5.9(a).

         "Early Settlement Date" has the meaning specified in Section 5.9(a).

         "Early Settlement Rate" has the meaning specified in Section 5.9(b).

         "Exchange Act" means the Securities Exchange Act of 1934 and any
statute successor thereto, in each case as amended from time to time, and the
rules and regulations promulgated thereunder.

         "Expiration Date" has the meaning specified in Section 1.4.

         "Expiration Time" has the meaning specified in Section 5.6(a)(6).

         "Failed Remarketing" means the remarketing of the Debt Securities on
the third Business Day immediately preceding the Purchase Contract Settlement
Date that does not occur because a condition precedent to such remarketing is
not fulfilled, or if in spite of using its reasonable efforts, the Remarketing
Agent cannot remarket the Debt Securities included in such remarketing at a
price not less than 100% of the aggregate principal amount of such Debt
Securities.

         "Global Certificate" means a Certificate that evidences all or part of
the Securities and is registered in the name of a Depositary or a nominee
thereof.

         "Growth PRIDES" means a Security, initially issued in substantially the
form set forth as Exhibit B hereto in a Stated Amount of $25, which represents
(i) a 1/40 undivided beneficial

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ownership in a Treasury Security having a principal amount at maturity equal to
$1,000, and (ii) the rights and obligations of the Company and the Holder under
one Purchase Contract.

         "Growth PRIDES Certificate" means a certificate evidencing the rights
and obligations of a Holder in respect of the number of Growth PRIDES specified
on such certificate.

         "Growth PRIDES Register" and "Growth PRIDES Registrar" have the
respective meanings specified in Section 3.5.

         "Holder," when used with respect to a Security, means the Person in
whose name the Security evidenced by an Income PRIDES Certificate and/or a
Growth PRIDES Certificate is registered on the Income PRIDES Register and/or the
Growth PRIDES Register, as the case may be.

         "Income PRIDES" means a Security, initially issued in substantially the
form set forth as Exhibit A hereto in the Stated Amount of $25, which represents
(i) beneficial ownership by the Holder of either (a) prior to the occurrence of
a Tax Event Redemption (1) one Debt Security in a principal amount of $25, or
(2) on and after the Reset Date, an Applicable Ownership Interest in the
Remarketing Treasury Portfolio, subject to the Pledge of such Debt Security or
Applicable Ownership Interest in the Remarketing Treasury Portfolio by the
Holder pursuant to the Pledge Agreement or (b) on or after the occurrence of a
Tax Event Redemption prior to the Purchase Contract Settlement Date, an
Applicable Ownership Interest in a Tax Event Treasury Portfolio, subject to the
Pledge of such Applicable Ownership Interest in the Tax Event Treasury Portfolio
by the Holder pursuant to the Pledge Agreement, and (ii) the rights and
obligations of the Company and the Holder under one Purchase Contract.

         "Income PRIDES Certificate" means a certificate evidencing the rights
and obligations of a Holder in respect of the number of Income PRIDES specified
on such certificate.

         "Income PRIDES Register" and "Income PRIDES Registrar" have the
respective meanings specified in Section 3.5.

         "Indenture" means the Indenture, dated as of June 16, 1998, between the
Company and the Indenture Trustee as supplemented by an officer's certificate
dated the date hereof establishing the Debt Securities, 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 Wachovia Bank, National Association (formerly
known as First Union National Bank), as trustee under the Indenture, or any
successor thereto.

         "Interest Payment Date" with respect to the Debt Securities, has the
meaning set forth in the Indenture.

         "Issuer Order" or "Issuer Request" means a written order or request
signed in the name of the Company by an Authorized Officer and delivered to the
Agent.

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         "NYSE" has the meaning specified in Section 5.1.

         "Officer's Certificate" means a certificate signed by an authorized
signatory of the Company establishing the terms of the debt securities of any
series pursuant to the Indenture.

         "Opinion of Counsel" means an opinion in writing signed by legal
counsel, who may be an employee of or counsel to the Company or an Affiliate and
who shall be reasonably acceptable to the Agent.

         "Outstanding," with respect to any Income PRIDES or Growth PRIDES
means, as of the date of determination, all Income PRIDES or Growth PRIDES
evidenced by Certificates theretofore authenticated, executed and delivered
under this Agreement, except:

         (i)      If a Termination Event has occurred, (A) Growth PRIDES for
which Treasury Securities have been deposited with the Agent in trust for the
Holders of such Growth PRIDES and (B) Income PRIDES for which Debt Securities or
the appropriate Applicable Ownership Interest in a Treasury Portfolio (or as
contemplated in Section 3.15 hereto with respect to a Holder's interest in the
Treasury Portfolio, cash) has been theretofore deposited with the Agent in trust
for the Holders of such Income PRIDES;

         (ii)     Income PRIDES and Growth PRIDES evidenced by Certificates
theretofore cancelled by the Agent or delivered to the Agent for cancellation or
deemed cancelled pursuant to the provisions of this Agreement; and

         (iii)    Income PRIDES and Growth PRIDES evidenced by Certificates in
exchange for or in lieu of which other Certificates have been authenticated,
executed on behalf of the Holder and delivered pursuant to this Agreement, other
than any such Certificate in respect of which there shall have been presented to
the Agent proof satisfactory to it that such Certificate is held by a bona fide
purchaser in whose hands the Income PRIDES or Growth PRIDES evidenced by such
Certificate are valid obligations of the Company;

         provided, however, that in determining whether the Holders of the
requisite number of the Income PRIDES or Growth PRIDES have given any request,
demand, authorization, direction, notice, consent or waiver hereunder, Income
PRIDES or Growth PRIDES owned by the Company or any Affiliate of the Company
shall be disregarded and deemed not to be Outstanding, except that, in
determining whether the Agent shall be protected in relying upon any such
request, demand, authorization, direction, notice, consent or waiver, only
Income PRIDES or Growth PRIDES which a Responsible Officer of the Agent actually
knows to be so owned shall be so disregarded. Income PRIDES or Growth PRIDES so
owned which have been pledged in good faith may be regarded as Outstanding
Securities if the pledgee establishes to the satisfaction of the Agent the
pledgee's right so to act with respect to such Income PRIDES or Growth PRIDES
and that the pledgee is not the Company or any Affiliate of the Company.

         "Paying Office" means the office of the Agent for purposes of making
payments on the Securities in The City of New York, Borough of Manhattan,
currently located at 40 Broad Street, 5th Floor, New York, New York 10004.

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         "Payment Date" means each of February 16, May 16, August 16 and
November 16, commencing August 16, 2003.

         "Permitted Investments" has the meaning set forth in Article I of the
Pledge Agreement.

         "Person" means a legal person, including any individual, corporation,
estate, partnership, joint venture, association, joint-stock company, limited
liability company, trust, unincorporated association or government or any agency
or political subdivision thereof or any other entity of whatever nature.

         "Pledge" means the pledge under the Pledge Agreement of the Debt
Securities, the Treasury Securities or the appropriate Applicable Ownership
Interest in a Treasury Portfolio, in each case constituting a part of the
Securities.

         "Pledge Agreement" means the Pledge Agreement, dated as of the date
hereof, by and among the Company, the Agent, as purchase contract agent and as
attorney-in-fact for the Holders from time to time of Securities, and the
Collateral Agent, as the collateral agent, the custodial agent and the
securities intermediary.

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

         "Pledged Debt Securities" has the meaning specified in Section 2.1 of
the Pledge Agreement.

         "Pledged Treasury Securities" has the meaning specified in Section 2.1
of the Pledge Agreement.

         "Predecessor Certificate" means a Predecessor Income PRIDES Certificate
or a Predecessor Growth PRIDES Certificate.

         "Predecessor Income PRIDES Certificate" of any particular Income PRIDES
Certificate means every previous Income PRIDES Certificate evidencing all or a
portion of the rights and obligations of the Company and the Holder under the
Income PRIDES evidenced thereby; and, for the purposes of this definition, any
Income PRIDES Certificate authenticated and delivered under Section 3.10 in
exchange for or in lieu of a mutilated, destroyed, lost or stolen Income PRIDES
Certificate shall be deemed to evidence the same rights and obligations of the
Company and the Holder as the mutilated, destroyed, lost or stolen Income PRIDES
Certificate.

         "Predecessor Growth PRIDES Certificate" of any particular Growth PRIDES
Certificate means every previous Growth PRIDES Certificate evidencing all or a
portion of the rights and obligations of the Company and the Holder under the
Growth PRIDES evidenced thereby; and, for the purposes of this definition, any
Growth PRIDES Certificate authenticated and delivered under Section 3.10 in
exchange for or in lieu of a mutilated, destroyed, lost or stolen Growth PRIDES
Certificate shall be deemed to evidence the same rights and obligations of the
Company and the Holder as the mutilated, destroyed, lost or stolen Growth PRIDES
Certificate.

                                       8

<PAGE>

         "Primary Treasury Dealer" means a primary U.S. government securities
dealer in New York City.

         "Proceeds" has the meaning set forth in Article I of the Pledge
Agreement.

         "Purchase Contract," when used with respect to any Security, means the
contract forming a part of such Security and obligating the Company (A) to sell
to the Holder of such Security and the Holder of such Security to purchase 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
(B) to pay the Holder Contract Adjustment Payments on the terms and subject to
the conditions set forth in Article Five hereof.

         "Purchase Contract Settlement Date" means August 16, 2006.

         "Purchase Contract Settlement Fund" has the meaning specified in
Section 5.5.

         "Purchase Price" has the meaning specified in Section 5.1.

         "Purchased Shares" has the meaning specified in Section 5.6(a)(6).

         "Quotation Agent" means (i) Merrill Lynch Government Securities, Inc.
or its successor, provided, however, that, if the foregoing shall cease to be a
Primary Treasury Dealer, the Company shall substitute therefor another Primary
Treasury Dealer, and (ii) any other Primary Treasury Dealer selected by the
Company.

         "Record Date" for the payment of interest, distribution and Contract
Adjustment Payments payable on any Payment Date means, as to any Global
Certificate, the 15th Business Day immediately prior to such Payment Date, and
as to any other Certificate, a day selected by the Company which shall be at
least one Business Day but not more than 60 Business Days prior to such Payment
Date (and which shall correspond to the related record date for the Debt
Securities).

         "Redemption Amount" (i) in the case of a Tax Event Redemption occurring
prior to the Reset Date or, if there is a Failed Remarketing, prior to August
16, 2006, for each Debt Security, the product of the principal amount of such
Debt Security and a fraction whose numerator is the Tax Event Treasury Portfolio
Purchase Price and whose denominator is the aggregate principal amount of Debt
Securities that are components of Income PRIDES, and (ii) in the case of a Tax
Event Redemption occurring on or after the Reset Date or, if there is a Failed
Remarketing, on or after August 16, 2006, for each Debt Security, the product of
the principal amount of such Debt Security and a fraction whose numerator is the
Tax Event Treasury Portfolio Purchase Price and whose denominator is the sum of
the aggregate principal amount of the Debt Securities outstanding on the Tax
Event Redemption Date.

         "Redemption Price" means an amount per Debt Security equal to the
Redemption Amount plus accrued and unpaid interest, if any, to the date of
redemption.

         "Reference Price" has the meaning specified in Section 5.1.

                                       9

<PAGE>

         "Register" means the Income PRIDES Register and the Growth PRIDES
Register.

         "Registrar" means the Income PRIDES Registrar and the Growth PRIDES
Registrar.

         "Remarketing Agent" means Merrill Lynch, Pierce, Fenner & Smith
Incorporated or such other Remarketing Agent as the Company shall select from
time to time.

         "Remarketing Agreement" means a Remarketing Agreement contemplated by
Section 5.4 by and between the Company, the Remarketing Agent and the Purchase
Contract Agent, including any supplements thereto.

         "Remarketing Announcement Date" means the seventh Business Day
immediately preceding each proposed Reset Date.

         "Remarketing Date(s)" means, unless there has been a successful
remarketing of the Debt Securities prior to such date, (i) one or more Business
Days selected by the Company as a date on which the Remarketing Agent shall
remarket the Debt Securities, provided that no more than two Remarketing Dates
shall occur during each of (a) the period from the third Business Day
immediately preceding February 16, 2006 to April 30, 2006, and (b) the period
from June 1, 2006 to August 1, 2006, (ii) the third Business Day immediately
preceding May 16, 2006, and (iii) the third Business Day immediately preceding
August 16, 2006.

         "Remarketing Fee" means 25 basis points (0.25%) of the aggregate
principal amount of the remarketed Debt Securities if the maturity date of the
remarketed Debt Securities is on or prior to August 16, 2008, or, if the
maturity date of the Debt Securities is extended on the Reset Date to after
August 16, 2008, such other amount as agreed between the Company and the
Remarketing Agent.

         "Remarketing Treasury Portfolio" means (a) interest or principal strips
of U.S. Treasury Securities that mature on or prior to August 15, 2006 in an
aggregate amount equal to the principal amount of the Debt Securities included
in Income PRIDES; (b) if the Reset Date occurs prior to August 16, 2006, with
respect to the originally scheduled quarterly interest payment date on the Debt
Securities that would have occurred on August 16, 2006, interest or principal
strips of U.S. Treasury Securities that mature on or prior to August 16, 2006 in
an aggregate amount equal to the aggregate interest payment that would be due on
August 16, 2006 on the principal amount of the Debt Securities that would have
been included in Income PRIDES assuming no remarketing, assuming no reset of the
interest rate on the Debt Securities and assuming that interest on the Debt
Securities accrued from the later of the Reset Date and May 16, 2006 to, but
excluding, August 16, 2006; and (c) if the Reset Date occurs prior to May 16,
2006, with respect to the originally scheduled quarterly interest payment date
on the Debt Securities that would have occurred on May 16, 2006, interest or
principal strips of U.S. Treasury Securities that mature on or prior to May 16,
2006 in an aggregate amount equal to the aggregate interest payment that would
be due on May 16, 2006 on the principal amount of the Debt Securities that would
have been included in the Income PRIDES assuming no remarketing, assuming no
reset of the interest rate on the Debt Securities and assuming that interest on
the Debt Securities accrued from the Reset Date to, but excluding, May 16, 2006.

                                       10

<PAGE>

         "Remarketing Treasury Portfolio Purchase Price" means the lowest
aggregate price quoted by a Primary Treasury Dealer to the Quotation Agent on
the third Business Day immediately preceding the Reset Date for the purchase of
the Remarketing Treasury Portfolio for settlement on the Reset Date.

         "Reorganization Event" has the meaning specified in Section 5.6(b).

         "Reset Agent" means Merrill Lynch, Pierce, Fenner & Smith Incorporated,
or such other Reset Agent as the Company shall select from time to time.

         "Reset Date" means the third Business Day immediately following the
Remarketing Date on which the Debt Securities are successfully remarketed.

         "Reset Rate" means the Coupon Rate to be in effect for the Debt
Securities on and after the Reset Date and determined as provided in Section
4.1.

         "Reset Spread" means an amount determined by the Reset Agent which,
when added to the Applicable Benchmark Treasury in effect on a Remarketing Date,
will produce the rate the Debt Securities should bear in order for the Debt
Securities being remarketed to have an approximate market value on the Reset
Date of (a) if the Remarketing Date is a date other than the third Business Day
immediately preceding August 16, 2006 (i) 100.25% multiplied by the Remarketing
Treasury Portfolio Purchase Price, plus (ii) the Remarketing Fee, or (b) if the
Remarketing Date is the third Business Day immediately preceding August 16, 2006
(i) 100.25% multiplied by the aggregate principal amount of the Debt Securities
being remarketed plus (ii) the Remarketing Fee, provided that the Reset Rate
shall in no event exceed the maximum permitted by applicable law.

         "Responsible Officer," when used with respect to the Agent, means any
Vice President, Assistant Vice President, Trust Officers or other officer of the
Agent assigned by the Agent to the Corporate Trust Administration Division of
the Agent (or any successor division or department of the Agent).

         "Security" means an Income PRIDES or a Growth PRIDES.

         "Senior Indebtedness" means indebtedness of any kind of the Company
(including the Debt Securities) unless the instrument under which such
indebtedness is incurred expressly provides that it is in parity or subordinate
in right of payment to the Contract Adjustment Payments.

         "Settlement Rate" has the meaning specified in Section 5.1.

         "Stated Amount" means $25, which is equal to the stated amount of an
Income PRIDES and the stated amount of a Growth PRIDES.

         "Tax Event" means the receipt by the Company of an opinion of a
nationally recognized independent tax counsel experienced in such matters to the
effect (which may include Skadden, Arps, Slate, Meagher & Flom LLP) to the
effect that, as a result of (a) any amendment to, change in, or announced
proposed change in, the laws (or any regulations thereunder) of the United

                                       11

<PAGE>

States or any political subdivision or taxing authority thereof or therein
affecting taxation, (b) any amendment to or change in an interpretation or
application of any such laws or regulations by any legislative body, court,
governmental agency or regulatory authority or (c) any interpretation or
pronouncement that provides for a position with respect to any such laws or
regulations that differs from the generally accepted position on May 21, 2003,
which amendment, change or proposed change is effective or which interpretation
or pronouncement is announced on or after May 21, 2003, there is more than an
insubstantial risk that interest payable by the Company on the Debt Securities
would not be deductible, in whole or in part, by the Company for United States
federal income tax purposes.

         "Tax Event Redemption" means, if a Tax Event shall occur and be
continuing, the redemption of Debt Securities, in whole but not in part, at the
option of the Company on not less than 30 days nor more than 60 days notice.

         "Tax Event Redemption Date" means the date on which a Tax Event
Redemption is to occur.

         "Tax Event Treasury Portfolio" means (a) if the Tax Event Redemption
occurs prior to the Reset Date or, if there is a Failed Remarketing of the Debt
Securities, prior to August 16, 2006 (i) interest or principal strips of U.S.
Treasury Securities that mature on or prior to August 15, 2006 in an aggregate
amount equal to the principal amount of Debt Securities included in the Income
PRIDES, and (ii) with respect to each scheduled interest payment date on the
Debt Securities that occurs after the Tax Event Redemption and prior to August
16, 2006, interest or principal strips of U.S. Treasury Securities which mature
on or prior to that interest payment date in an aggregate amount equal to the
aggregate interest payment that would be due on the aggregate principal amount
of the Debt Securities included in the Income PRIDES on that date if the
interest rate of the Debt Securities was not reset on the Reset Date; or (b) if
the Tax Event Redemption occurs on or after the Reset Date or, if there is a
Failed Remarketing of the Debt Securities, on or after August 16, 2006 (i)
interest or principal strips of U.S. Treasury Securities that mature on or prior
to May 15, 2008 (or, if the maturity date of the Debt Securities is extended to
a later date, on or prior to such later maturity date) in an aggregate amount
equal to the principal amount of Debt Securities outstanding, and (ii) with
respect to each scheduled interest payment date on the Debt Securities that
occurs after the Tax Event Redemption and on or before May 16, 2008 (or, if the
maturity date of the Debt Securities is extended to a later date, on or prior to
such later maturity date), interest or principal strips of U.S. Treasury
Securities which mature on or prior to that interest payment date in an
aggregate amount equal to the aggregate interest payment that would be due on
the aggregate principal amount of the Debt Securities outstanding on that date.

         "Tax Event Treasury Portfolio Purchase Price" means the lowest
aggregate price quoted by the Primary Treasury Dealer to the Quotation Agent on
the third Business Day immediately preceding the Tax Event Redemption Date for
the purchase of the Tax Event Treasury Portfolio for settlement on the Tax Event
Redemption Date.

         "Termination Date" means the date, if any, on which a Termination Event
occurs.

                                       12

<PAGE>

         "Termination Event" means the occurrence of any of the following
events: (i) at any time on or prior to the Purchase Contract Settlement Date, a
judgment, decree or court order shall have been entered granting relief under
the Bankruptcy Code, adjudicating the Company to be insolvent, or approving as
properly filed a petition seeking reorganization or liquidation of the Company
or any other similar applicable Federal or State law, and, unless such judgment,
decree or order shall have been entered within 60 days prior to the Purchase
Contract Settlement Date, such decree or order shall have continued undischarged
and unstayed for a period of 60 days; or (ii) at any time on or prior to the
Purchase Contract Settlement Date, a judgment, decree or court order for the
appointment of a receiver or liquidator or trustee or assignee in bankruptcy or
insolvency of the Company or of its property, or for the winding up or
liquidation of its affairs, shall have been entered, and, unless such judgment,
decree or order shall have been entered within 60 days prior to the Purchase
Contract Settlement Date, such judgment, decree or order shall have continued
undischarged and unstayed for a period of 60 days; or (iii) at any time on or
prior to the Purchase Contract Settlement Date the Company shall file a petition
for relief under the Bankruptcy Code, or shall consent to the filing of a
bankruptcy proceeding against it, or shall file a petition or answer or consent
seeking reorganization or liquidation under the Bankruptcy Code or any other
similar applicable Federal or State law, or shall consent to the filing of any
such petition, or shall consent to the appointment of a receiver or liquidator
or trustee or assignee in bankruptcy or insolvency of it or of its property, or
shall make an assignment for the benefit of creditors, or shall admit in writing
its inability to pay its debts generally as they become due.

         "Threshold Appreciation Price" has the meaning specified in Section
5.1.

         "TIA" means, as of any time, the Trust Indenture Act of 1939, as
amended, or any successor statute, as in effect at such time.

         "Trading Day" has the meaning specified in Section 5.1.

         "Treasury Portfolio" means, as applicable, the Remarketing Treasury
Portfolio or a Tax Event Treasury Portfolio.

         "Treasury Portfolio Purchase Price" means, as applicable, the
Remarketing Treasury Portfolio Purchase Price or the Tax Event Treasury
Portfolio Purchase Price.

         "Treasury Security" means a zero-coupon U.S. Treasury security having a
principal amount at maturity equal to $1,000 and maturing on July 15, 2006
(CUSIP No. 912820BT3) and, during the period between July 15, 2006 and August
16, 2006, the Proceeds from that Treasury Security.

         "Underwriting Agreement" means the Purchase Agreement dated May 21,
2003 relating to the Income PRIDES between the Company and Merrill Lynch,
Pierce, Fenner & Smith Incorporated, as representative of the underwriters named
therein.

         "Vice President" means any vice president, whether or not designated by
a number or a word or words added before or after the title "vice president."

                                       13

<PAGE>

SECTION 1.2       COMPLIANCE CERTIFICATES AND OPINIONS.

         Except as otherwise expressly provided by this Agreement, upon any
application or request by the Company to the Agent to take any action under any
provision of this Agreement, the Company shall furnish to the Agent a Company
Certificate stating that in the opinion of the Authorized Officer signing such
Company Certificate all conditions precedent, if any, provided for in this
Agreement relating to the proposed action have been complied with and an Opinion
of Counsel stating that, in the opinion of such counsel, all such conditions
precedent, if any, have been complied with, except that in the case of any such
application or request as to which the furnishing of such documents is
specifically required by any provision of this Agreement relating to such
particular application or request, no additional certificate or opinion need be
furnished.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Agreement shall include:

                  (1)      a statement that each individual signing such
         certificate or opinion has read such covenant or condition and the
         definitions herein relating thereto;

                  (2)      a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                  (3)      a statement that, in the opinion of each such
         individual, he or she has made such examination or investigation as is
         necessary to enable such individual to express an informed opinion as
         to whether or not such covenant or condition has been complied with;
         and

                  (4)      a statement as to whether, in the opinion of each
         such individual, such condition or covenant has been complied with.

SECTION 1.3       FORM OF DOCUMENTS DELIVERED TO AGENT.

         In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

         Any certificate or opinion of an officer of the Company may be based,
insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such certificate or Opinion of Counsel may be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Company stating that the
information with respect to such factual matters is in the possession of the
Company unless such counsel knows, or in the exercise of reasonable care should
know, that the certificate or opinion or representations with respect to such
matters are erroneous.

                                       14

<PAGE>

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Agreement, they may, but need not, be consolidated and
form one instrument.

SECTION 1.4       ACTS OF HOLDERS; RECORD DATES.

                  (a)      Any request, demand, authorization, direction,
         notice, consent, waiver or other action provided by this Agreement to
         be given or taken by Holders may be embodied in and evidenced by one or
         more instruments of substantially similar tenor signed by such Holders
         in person or by agent duly appointed in writing; and, except as herein
         otherwise expressly provided, such action shall become effective when
         such instrument or instruments are delivered to the Agent and, where it
         is hereby expressly required, to the Company. Such instrument or
         instruments (and the action embodied therein and evidenced thereby) are
         herein sometimes referred to as the "Act" of the Holders signing such
         instrument or instruments. Proof of execution of any such instrument or
         of a writing appointing any such agent shall be sufficient for any
         purpose of this Agreement and (subject to Section 7.1) conclusive in
         favor of the Agent and the Company, if made in the manner provided in
         this Section.

                  (b)      The fact and date of the execution by any Person of
         any such instrument or writing may be proved in any manner which the
         Agent deems sufficient.

                  (c)      The ownership of Securities shall be proved by the
         Income PRIDES Register or the Growth PRIDES Register, as the case may
         be.

                  (d)      Any request, demand, authorization, direction,
         notice, consent, waiver or other Act of the Holder of any Certificate
         shall bind every future Holder of the same Certificate and the Holder
         of every Certificate issued upon the registration of transfer thereof
         or in exchange therefor or in lieu thereof in respect of anything done,
         omitted or suffered to be done by the Agent or the Company in reliance
         thereon, whether or not notation of such action is made upon such
         Certificate.

                  (e)      The Company may set any day as a record date for the
         purpose of determining the Holders of Outstanding Securities entitled
         to give, make or take any request, demand, authorization, direction,
         notice, consent, waiver or other action provided or permitted by this
         Agreement to be given, made or taken by Holders of Securities. If any
         record date is set pursuant to this paragraph, the Holders of the
         Outstanding Income PRIDES and the Outstanding Growth PRIDES, as the
         case may be, on such record date, and no other Holders, shall be
         entitled to take the relevant action with respect to the Income PRIDES
         or the Growth PRIDES, as the case may be, whether or not such Holders
         remain Holders after such record date; provided that no such action
         shall be effective hereunder unless taken on or prior to the applicable
         Expiration Date by Holders of the requisite number of Outstanding
         Securities on such record date. Nothing in this paragraph shall be
         construed to prevent the Company from setting a new record date for any
         action for which a record date has previously been set pursuant to this
         paragraph (whereupon the record date previously set shall automatically
         and with no action by any Person be cancelled and of no effect), and
         nothing in this paragraph shall be construed to

                                       15

<PAGE>

         render ineffective any action taken by Holders of the requisite number
         of Outstanding Securities on the date such action is taken. Promptly
         after any record date is set pursuant to this paragraph, the Company,
         at its own expense, shall cause notice of such record date, the
         proposed action by Holders and the applicable Expiration Date to be
         given to the Agent in writing and to each Holder of Securities in the
         manner set forth in Section 1.6.

         With respect to any record date set pursuant to this Section, the
Company may designate any date as the "Expiration Date" and from time to time
may change the Expiration Date to any earlier or later day; provided that no
such change shall be effective unless notice of the proposed new Expiration Date
is given to the Agent in writing, and to each Holder of Securities in the manner
set forth in Section 1.6, on or prior to the existing Expiration Date. If an
Expiration Date is not designated with respect to any record date set pursuant
to this Section, the Company shall be deemed to have initially designated the
180th day after such record date as the Expiration Date with respect thereto,
subject to its right to change the Expiration Date as provided in this
paragraph. Notwithstanding the foregoing, no Expiration Date shall be later than
the 180th day after the applicable record date.

SECTION 1.5       NOTICES.

         Any request, demand, authorization, direction, notice, consent, waiver
or Act of Holders or other document provided or permitted by this Agreement to
be made upon, given or furnished to, or filed with,

                  (1)      the Agent by any Holder or by the Company shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if made, given, furnished or filed in writing and
         personally delivered or mailed, first-class postage prepaid or
         facsimile, followed by telephone confirmation, to the Agent at Wachovia
         Bank, National Association, 401 South Tryon Street, 12th Floor,
         Charlotte, N.C. 28288-1179, Facsimile: 704-383-7316, Attn: Shawn
         Bednasek, or at any other address previously furnished in writing by
         the Agent to the Holders and the Company;

                  (2)      the Company by the Agent or by any Holder shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if made, given, furnished or filed in writing and
         personally delivered or mailed, first-class postage prepaid or
         facsimile, followed by telephone confirmation, to the Company at AmerUs
         Group Co., 699 Walnut Street, Des Moines, IA 50309, Facsimile:_______
         Attention: Melinda Urion, Chief Financial Officer, with a copy to
         Joseph K. Haggerty, Senior Vice President and General Counsel, or at
         any other address previously furnished in writing to the Agent by the
         Company;

                  (3)      the Collateral Agent by the Agent, the Company or any
         Holder shall be sufficient for every purpose hereunder (unless
         otherwise herein expressly provided) if made, given, furnished or filed
         in writing and personally delivered or mailed, first-class postage
         prepaid or facsimile, followed by telephone confirmations, addressed to
         the Collateral Agent at BNY Midwest Trust Company, 2 N. LaSalle St.,
         Suite 1020, Chicago, IL 60602, Facsimile: _________, Attn: Roxanne
         Ellwanger, or at any other address

                                       16

<PAGE>

         previously furnished in writing by the Collateral Agent to the Agent,
         the Company and the Holders; or

                  (4)      the Indenture Trustee by the Company shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if made, given, furnished or filed in writing and
         personally delivered or mailed, first-class postage prepaid or
         facsimile, followed by telephone confirmations, addressed to the
         Indenture Trustee at First Union National Bank, Wachovia Bank, National
         Association, 401 South Tryon Street, 12th Floor, Charlotte, N.C.
         28288-1179, Facsimile: 704-383-7316, Attn: Shawn Bednasek, or at any
         other address previously furnished in writing by the Indenture Trustee
         to the Company.

SECTION 1.6       NOTICE TO HOLDERS; WAIVER.

         Where this Agreement provides for notice to Holders of any event, such
notice shall be sufficiently given (unless otherwise herein expressly provided)
if in writing and mailed, first-class postage prepaid, to each Holder affected
by such event, at its address as it appears in the applicable Register, not
later than the latest date, and not earlier than the earliest date, prescribed
for the giving of such notice. In any case where notice to Holders is given by
mail, neither the failure to mail such notice, nor any defect in any notice so
mailed to any particular Holder shall affect the sufficiency of such notice with
respect to other Holders. Where this Agreement provides for notice in any
manner, such notice may be waived in writing by the Person entitled to receive
such notice, either before or after the event, and such waiver shall be the
equivalent of such notice. Waivers of notice by Holders shall be filed with the
Agent, but such filing shall not be a condition precedent to the validity of any
action taken in reliance upon such waiver.

         In case by reason of the suspension of regular mail service or by
reason of any other cause it shall be impracticable to give such notice by mail,
then such notification as shall be made with the approval of the Agent shall
constitute a sufficient notification for every purpose hereunder.

SECTION 1.7       EFFECT OF HEADINGS AND TABLE OF CONTENTS.

         The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

SECTION 1.8       SUCCESSORS AND ASSIGNS.

         All covenants and agreements in this Agreement by the Company shall
bind its successors and assigns, whether so expressed or not.

SECTION 1.9       SEPARABILITY CLAUSE.

         In case any provision in this Agreement or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions hereof and thereof shall not in any way be affected or
impaired thereby.

                                       17

<PAGE>

SECTION 1.10      BENEFITS OF AGREEMENT.

         Nothing in this Agreement or in the Securities, express or implied,
shall give to any Person, other than the parties hereto and their successors
hereunder and, to the extent provided hereby, the Holders, any benefits or any
legal or equitable right, remedy or claim under this Agreement. The Holders from
time to time shall be beneficiaries of this Agreement and shall be bound by all
of the terms and conditions hereof and of the Securities evidenced by their
Certificates by their acceptance of delivery of such Certificates.

SECTION 1.11      GOVERNING LAW.

         THIS AGREEMENT AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

SECTION 1.12      LEGAL HOLIDAYS.

         In any case where any Payment Date shall not be a Business Day, then
(notwithstanding any other provision of this Agreement or the Income PRIDES
Certificates or the Growth PRIDES Certificates) payment of the Contract
Adjustment Payments, if any, shall not be made on such date, but such payments
shall be made on the next succeeding Business Day with the same force and effect
as if made on such Payment Date, and no interest shall accrue or be payable by
the Company or any Holder for the period from and after any such Payment Date,
except that, if such next succeeding Business Day is in the next succeeding
calendar year, such payment shall be made on the immediately preceding Business
Day with the same force and effect as if made on such Payment Date.

         In any case where the Purchase Contract Settlement Date shall not be a
Business Day, then (notwithstanding any other provision of this Agreement, the
Income PRIDES Certificates or the Growth PRIDES Certificates), the Purchase
Contracts shall not be performed on such date, but the Purchase Contracts shall
be performed on the immediately following Business Day with the same force and
effect as if performed on the Purchase Contract Settlement Date.

SECTION 1.13      COUNTERPARTS.

         This Agreement may be executed in any number of counterparts by the
parties hereto on separate counterparts, each of which, when so executed and
delivered, shall be deemed an original, but all such counterparts shall together
constitute one and the same instrument.

SECTION 1.14      INSPECTION OF AGREEMENT.

         A copy of this Agreement shall be available at all reasonable times
during normal business hours at the Corporate Trust Office for inspection by any
Holder.

                                       18

<PAGE>

                                   ARTICLE II

                                CERTIFICATE FORMS

SECTION 2.1       FORMS OF CERTIFICATES GENERALLY.

         The Income PRIDES Certificates (including the form of Purchase Contract
forming part of the Income PRIDES evidenced thereby) shall be in substantially
the form set forth in Exhibit A hereto, with such letters, numbers or other
marks of identification or designation and such legends or endorsements printed,
lithographed or engraved thereon as may be required by the rules of any
securities exchange on which the Income PRIDES are listed or any depositary
therefor, or as may, consistently herewith, be determined by the officers of the
Company executing such Income PRIDES Certificates, as evidenced by their
execution of the Income PRIDES Certificates.

         The definitive Income PRIDES Certificates shall be printed,
lithographed or engraved on steel engraved borders or may be produced in any
other manner, all as determined by the officers of the Company executing the
Income PRIDES evidenced by such Income PRIDES Certificates, consistent with the
provisions of this Agreement, as evidenced by their execution thereof.

         The Growth PRIDES Certificates (including the form of Purchase
Contracts forming part of the Growth PRIDES evidenced thereby) shall be in
substantially the form set forth in Exhibit B hereto, with such letters, numbers
or other marks of identification or designation and such legends or endorsements
printed, lithographed or engraved thereon as may be required by the rules of any
securities exchange on which the Growth PRIDES may be listed or any depositary
therefor, or as may, consistently herewith, be determined by the officers of the
Company executing such Growth PRIDES Certificates, as evidenced by their
execution of the Growth PRIDES Certificates.

         The definitive Growth PRIDES Certificates shall be printed,
lithographed or engraved on steel engraved borders or may be produced in any
other manner, all as determined by the officers of the Company executing the
Growth PRIDES evidenced by such Growth PRIDES Certificates, consistent with the
provisions of this Agreement, as evidenced by their execution thereof.

         Every Global Certificate authenticated, executed on behalf of the
Holders and delivered hereunder shall bear a legend in substantially the
following form:

         THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE
PURCHASE CONTRACT AGREEMENT (AS HEREINAFTER DEFINED) AND IS REGISTERED IN THE
NAME OF THE CLEARING AGENCY OR A NOMINEE THEREOF. THIS CERTIFICATE MAY NOT BE
EXCHANGED IN WHOLE OR IN PART FOR A CERTIFICATE REGISTERED, AND NO TRANSFER OF
THIS CERTIFICATE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY
PERSON OTHER THAN SUCH CLEARING AGENCY OR A NOMINEE THEREOF, EXCEPT IN THE
LIMITED CIRCUMSTANCES DESCRIBED IN THE PURCHASE CONTRACT AGREEMENT.

                                       19

<PAGE>

SECTION 2.2       FORM OF AGENT'S CERTIFICATE OF AUTHENTICATION.

         The form of the Agent's certificate of authentication of the Income
PRIDES shall be in substantially the form set forth on the form of the Income
PRIDES Certificates set forth as Exhibit A hereto.

         The form of the Agent's certificate of authentication of the Growth
PRIDES shall be in substantially the form set forth on the form of the Growth
PRIDES Certificates set forth as Exhibit B hereto.

                                  ARTICLE III

                                 THE SECURITIES

SECTION 3.1       TITLE AND TERMS; DENOMINATIONS.

         The aggregate number of Income PRIDES and Growth PRIDES evidenced by
Certificates authenticated, executed on behalf of the Holders and delivered
hereunder is limited to 5,000,000 units (or 5,750,000 if the overallotment
option provided for in the Underwriting Agreement is exercised in full) except
for Certificates authenticated, executed and delivered upon registration of
transfer of, in exchange for, or in lieu of, other Certificates pursuant to
Section 3.4, 3.5, 3.10, 3.12, 3.13, 5.9 or 8.5.

         The Certificates shall be issuable only in registered form and only in
denominations of a single Income PRIDES or Growth PRIDES and any integral
multiple thereof.

SECTION 3.2       RIGHTS AND OBLIGATIONS EVIDENCED BY THE CERTIFICATES.

         Each Income PRIDES Certificate shall evidence the number of Income
PRIDES specified therein, with each such Income PRIDES representing the
ownership by the Holder thereof of a beneficial interest in a Debt Security or
the Applicable Ownership Interest in the appropriate Treasury Portfolio, as the
case may be, subject to the Pledge of such Debt Security or Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, by such
Holder pursuant to the Pledge Agreement, and the rights and obligations of the
Holder thereof and the Company under one Purchase Contract. The Agent as
attorney-in-fact for, and on behalf of, the Holder of each Income PRIDES shall
pledge, pursuant to the Pledge Agreement, each Debt Security or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as the case may be,
forming a part of such Income PRIDES, to the Collateral Agent and grant to the
Collateral Agent a security interest in the right, title, and interest of such
Holder in such Debt Security or Applicable Ownership Interest in the appropriate
Treasury Portfolio, as the case may be, for the benefit of the Company, to
secure the obligation of the Holder under one Purchase Contract to purchase the
Common Stock of the Company.

         Each Growth PRIDES Certificate shall evidence the number of Growth
PRIDES specified therein, with each such Growth PRIDES representing the
ownership by the Holder thereof of a 1/40, or 2.5%, undivided beneficial
interest in a Treasury Security, subject to the Pledge of such Treasury Security
by such Holder pursuant to the Pledge Agreement, and the rights and obligations
of the Holder thereof and the Company under one Purchase Contract. The

                                       20

<PAGE>

Agent as attorney-in-fact for, and on behalf of, the Holder of each Growth
PRIDES shall pledge, pursuant to the Pledge Agreement, each Treasury Security
forming a part of such Growth PRIDES, to the Collateral Agent and grant to the
Collateral Agent a security interest in the right, title, and interest of such
Holder in such Treasury Security for the benefit of the Company, to secure the
obligation of the Holder under one Purchase Contract to purchase the Common
Stock of the Company.

SECTION 3.3       EXECUTION, AUTHENTICATION, DELIVERY AND DATING.

         Subject to the provisions of Sections 3.13 and 3.14 hereof, upon the
execution and delivery of this Agreement, and at any time and from time to time
thereafter, the Company may deliver Certificates executed by the Company to the
Agent for authentication, execution on behalf of the Holders and delivery,
together with its Issuer Order for authentication of such Certificates, and the
Agent in accordance with such Issuer Order shall authenticate, execute on behalf
of the Holders and deliver such Certificates.

         The Certificates shall be executed on behalf of the Company by its
Chairman of the Board, its President, one of its Vice Presidents, its Treasurer,
one of its Assistant Treasurers, its Secretary or one of its Assistant
Secretaries. The signature of any of these officers on the Certificates may be
manual or facsimile.

         Certificates bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Certificates or did not
hold such offices at the date of such Certificates.

         No Purchase Contract evidenced by a Certificate shall be valid until
such Certificate has been executed on behalf of the Holder by the manual
signature of an authorized signatory of the Agent, as such Holder's
attorney-in-fact. Such signature by an authorized signatory of the Agent shall
be conclusive evidence that the Holder of such Certificate has entered into the
Purchase Contracts evidenced by such Certificate.

         Each Certificate shall be dated the date of its authentication.

         No Certificate shall be entitled to any benefit under this Agreement or
be valid or obligatory for any purpose unless there appears on such Certificate
a certificate of authentication substantially in the form provided for herein
executed by an authorized signatory of the Agent by manual signature, and such
certificate upon any Certificate shall be conclusive evidence, and the only
evidence, that such Certificate has been duly authenticated and delivered
hereunder.

SECTION 3.4       TEMPORARY CERTIFICATES.

         Pending the preparation of definitive Certificates, the Company shall
execute and deliver to the Agent, and the Agent shall authenticate, execute on
behalf of the Holders, and deliver, in lieu of such definitive Certificates,
temporary Certificates which are in substantially the forms set forth in Exhibit
A and Exhibit B hereto, with such letters, numbers or other marks of
identification or designation and such legends or endorsements printed,
lithographed or engraved thereon as may be required by the rules of any
securities exchange on which the Income PRIDES

                                       21

<PAGE>

or Growth PRIDES are listed, or as may, consistently herewith, be determined by
the officers of the Company executing such Certificates, as evidenced by their
execution of the Certificates.

         If temporary Certificates are issued, the Company will cause definitive
Certificates to be prepared without unreasonable delay. After the preparation of
definitive Certificates, the temporary Certificates shall be exchangeable for
definitive Certificates upon surrender of the temporary Certificates at the
Corporate Trust Office, at the expense of the Company and without charge to the
Holder. Upon surrender for cancellation of any one or more temporary
Certificates, the Company shall execute and deliver to the Agent, and the Agent
shall authenticate, execute on behalf of the Holder, and deliver in exchange
therefor, one or more definitive Certificates of like tenor and denominations
and evidencing a like number of Income PRIDES or Growth PRIDES, as the case may
be, as the temporary Certificate or Certificates so surrendered. Until so
exchanged, the temporary Certificates shall in all respects evidence the same
benefits and the same obligations with respect to the Income PRIDES or Growth
PRIDES, as the case may be, evidenced thereby as definitive Certificates.

SECTION 3.5       REGISTRATION; REGISTRATION OF TRANSFER AND EXCHANGE.

         The Agent shall keep at the Corporate Trust Office a register (the
"Income PRIDES Register") in which, subject to such reasonable regulations as it
may prescribe, the Agent shall provide for the registration of Income PRIDES
Certificates and of transfers of Income PRIDES Certificates (the Agent, in such
capacity, the "Income PRIDES Registrar") and a register (the "Growth PRIDES
Register") in which, subject to such reasonable regulations as it may prescribe,
the Agent shall provide for the registration of the Growth PRIDES Certificates
and of transfers of Growth PRIDES Certificates (the Agent, in such capacity, the
"Growth PRIDES Registrar").

         Upon surrender for registration of transfer of any Certificate at the
Corporate Trust Office, the Company shall execute and deliver to the Agent, and
the Agent shall authenticate, execute on behalf of the designated transferee or
transferees, and deliver, in the name of the designated transferee or
transferees, one or more new Certificates of any authorized denominations, like
tenor, and evidencing a like number of Income PRIDES or Growth PRIDES as the
case may be.

         At the option of the Holder, Certificates may be exchanged for other
Certificates, of any authorized denominations and evidencing a like number of
Income PRIDES or Growth PRIDES, as the case may be, upon surrender of the
Certificates to be exchanged at the Corporate Trust Office. Whenever any
Certificates are so surrendered for exchange, the Company shall execute and
deliver to the Agent, and the Agent shall authenticate, execute on behalf of the
Holder, and deliver the Certificates which the Holder making the exchange is
entitled to receive.

         All Certificates issued upon any registration of transfer or exchange
of a Certificate shall evidence the ownership of the same number of Income
PRIDES or Growth PRIDES, as the case may be, and be entitled to the same
benefits and subject to the same obligations, under this Agreement as the Income
PRIDES or Growth PRIDES, as the case may be, evidenced by the Certificate
surrendered upon such registration of transfer or exchange.

                                       22

<PAGE>

         Every Certificate presented or surrendered for registration of transfer
or for exchange shall (if so required by the Company or the Agent) be duly
endorsed, or be accompanied by a written instrument of transfer in form
satisfactory to the Company and the Agent, duly executed by the Holder thereof
or its attorney duly authorized in writing.

         No service charge shall be made for any registration of transfer or
exchange of a Certificate, but the Company and the Agent may require payment
from the Holder of a sum sufficient to cover any tax or other governmental
charge that may be imposed in connection with any registration of transfer or
exchange of Certificates, other than any exchanges pursuant to Sections 3.6 and
8.5 not involving any transfer.

         Notwithstanding the foregoing, the Company will not be obligated to
execute and deliver to the Agent, and the Agent will not be obligated to
authenticate, execute on behalf of the Holder and deliver any Certificate
presented or surrendered for registration of transfer or for exchange on or
after the Business Day immediately preceding the Purchase Contract Settlement
Date or on or after the Termination Date. In lieu of delivery of a new
Certificate, upon satisfaction of the applicable conditions specified above in
this Section and receipt of appropriate registration or transfer instructions
from such Holder, the Agent shall (i) if the Purchase Contract Settlement Date
has occurred, deliver the shares of Common Stock issuable in respect of the
Purchase Contracts forming a part of the Securities evidenced by such
Certificate, (ii) in the case of Income PRIDES, if a Termination Event shall
have occurred prior to the Purchase Contract Settlement Date, transfer the
aggregate principal amount of the Debt Securities or the aggregate Stated Amount
of the appropriate Treasury Portfolio, as applicable, evidenced thereby, or
(iii) in the case of Growth PRIDES, if a Termination Event shall have occurred
prior to the Purchase Contract Settlement Date, transfer the Treasury Securities
evidenced thereby, in each case subject to the applicable conditions and in
accordance with the applicable provisions of Article V hereof.

SECTION 3.6       BOOK-ENTRY INTERESTS.

         The Certificates, on original issuance, will be issued in the form of
one or more fully registered Global Certificates, to be delivered to the
Depositary or a nominee or custodian thereof by, or on behalf of, the Company.
Such Global Certificates shall initially be registered on the books and records
of the Company in the name of Cede & Co., the nominee of the Depositary, and no
Beneficial Owner will receive a definitive Certificate representing such
Beneficial Owner's interest in such Global Certificate, except as provided in
Section 3.9. The Agent shall enter into an agreement with the Depositary if so
requested by the Company. Unless and until definitive, fully registered
Certificates have been issued to Beneficial Owners pursuant to Section 3.9:

                  (a)      the provisions of this Section 3.6 shall be in full
         force and effect;

                  (b)      the Company shall be entitled to deal with the
         Clearing Agency for all purposes of this Agreement (including the
         payment of Contract Adjustment Payments, if any, and receiving
         approvals, votes or consents hereunder) as the Holder of the Securities
         and the sole holder of the Global Certificate(s) and shall have no
         obligation to the Beneficial Owners;

                                       23

<PAGE>

                  (c)      to the extent that the provisions of this Section 3.6
         conflict with any other provisions of this Agreement, the provisions of
         this Section 3.6 shall control; and

                  (d)      the rights of the Beneficial Owners shall be
         exercised only through the Clearing Agency and shall be limited to
         those established by law and agreements between such Beneficial Owners
         and the Clearing Agency and/or the Clearing Agency Participants. The
         Clearing Agency will make book entry transfers among Clearing Agency
         Participants and receive and transmit payments of Contract Adjustment
         Payments to such Clearing Agency Participants.

SECTION 3.7       NOTICES TO HOLDERS.

         Whenever a notice or other communication to the Holders is required to
be given under this Agreement, the Company or the Company's agent shall give
such notices and communications to the Holders and, with respect to any
Certificates registered in the name of a Clearing Agency or the nominee of a
Clearing Agency, the Company or the Company's agent shall, except as set forth
herein, have no obligations to the Beneficial Owners.

SECTION 3.8       APPOINTMENT OF SUCCESSOR CLEARING AGENCY.

         If any Clearing Agency elects to discontinue its services as securities
depositary with respect to the Securities, the Company may, in its sole
discretion, appoint a successor Clearing Agency with respect to the Securities.

SECTION 3.9       DEFINITIVE CERTIFICATES.

         If (i) a Clearing Agency elects to discontinue its services as
securities depositary with respect to the Securities and a successor Clearing
Agency is not appointed within 90 days after such discontinuance pursuant to
Section 3.8, or (ii) the Company elects to terminate the book-entry system
through the Clearing Agency with respect to the Securities, then upon surrender
of the Global Certificates representing the Book-Entry Interests with respect to
the Securities by the Clearing Agency, accompanied by registration instructions,
the Company shall cause definitive Certificates to be delivered to Beneficial
Owners in accordance with the instructions of the Clearing Agency. The Company
shall not be liable for any delay in delivery of such instructions and may
conclusively rely on and shall be protected in relying on, such instructions.

SECTION 3.10      MUTILATED, DESTROYED, LOST AND STOLEN CERTIFICATES.

         If any mutilated Certificate is surrendered to the Agent, the Company
shall execute and deliver to the Agent, and the Agent shall authenticate,
execute on behalf of the Holder, and deliver in exchange therefor, a new
Certificate at the cost of the Holder, evidencing the same number of Income
PRIDES or Growth PRIDES, as the case may be, and bearing a Certificate number
not contemporaneously outstanding.

         If there shall be delivered to the Company and the Agent (i) evidence
to their satisfaction of the destruction, loss or theft of any Certificate, and
(ii) such security or indemnity at the cost of the Holder as may be required by
them to hold each of them and any agent of either of them harmless, then, in the
absence of notice to the Company or the Agent that such Certificate has

                                       24

<PAGE>

been acquired by a bona fide purchaser, the Company shall execute and deliver to
the Agent, and the Agent shall authenticate, execute on behalf of the Holder,
and deliver to the Holder, in lieu of any such destroyed, lost or stolen
Certificate, a new Certificate, evidencing the same number of Income PRIDES or
Growth PRIDES, as the case may be, and bearing a Certificate number not
contemporaneously outstanding.

         Notwithstanding the foregoing, the Company will not be obligated to
execute and deliver to the Agent, and the Agent will not be obligated to
authenticate, execute on behalf of the Holder and deliver any Certificate on or
after the Business Day immediately preceding the Purchase Contract Settlement
Date or on or after the Termination Date. In addition, in lieu of delivery of a
new Certificate, upon satisfaction of the applicable conditions specified above
in this Section and receipt of appropriate registration or transfer instructions
from such Holder, the Agent may (i) if the Purchase Contract Settlement Date has
occurred, deliver the shares of Common Stock issuable in respect of the Purchase
Contracts forming a part of the Securities evidenced by such Certificate, or
(ii) if a Termination Event shall have occurred, transfer the Debt Securities,
the Applicable Ownership Interest in the appropriate Treasury Portfolio or the
Treasury Securities, as the case may be, forming a part of the Securities
represented by such Certificate to such Holder, in each case subject to the
applicable conditions and in accordance with the applicable provisions of
Article Five hereof.

         Upon the issuance of any new Certificate under this Section, the
Company and the Agent may require payment from the Holder of a sum sufficient to
cover any tax or other governmental charge that may be imposed in relation
thereto and any other expenses (including the fees and expenses of the Agent)
connected therewith.

         Every new Certificate issued pursuant to this Section in lieu of any
destroyed, lost or stolen Certificate shall constitute an original additional
contractual obligation of the Company and of the Holder in respect of the
Security evidenced thereby, whether or not the destroyed, lost or stolen
Certificate (and the Securities evidenced thereby) shall be at any time
enforceable by anyone, and shall be entitled to all the benefits and be subject
to all the obligations of this Agreement equally and proportionately with any
and all other Certificates delivered hereunder.

         The provisions of this Section are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Certificates.

SECTION 3.11      PERSONS DEEMED OWNERS.

         Prior to due presentment of a Certificate for registration of transfer,
the Company and the Agent, and any agent of the Company or the Agent, may treat
the Person in whose name such Certificate is registered on the Income PRIDES
Register or the Growth PRIDES Register, as applicable, as the owner of the
Income PRIDES or Growth PRIDES evidenced thereby, for the purpose of receiving
interest on the Debt Securities or distributions on the maturing quarterly
interest strips of the appropriate Treasury Portfolio, as applicable, receiving
payments of Contract Adjustment Payments, performance of the Purchase Contracts
and for all other purposes whatsoever, whether or not any interest on the Debt
Securities or the Contract Adjustment Payments payable in respect of the
Purchase Contracts constituting a part of the

                                       25

<PAGE>

Income PRIDES or Growth PRIDES evidenced thereby shall be overdue and
notwithstanding any notice to the contrary, and neither the Company nor the
Agent, nor any agent of the Company or the Agent, shall be affected by notice to
the contrary.

         Notwithstanding the foregoing, with respect to any Global Certificate,
nothing herein shall prevent the Company, the Agent or any agent of the Company
or the Agent, from treating the Clearing Agency as the sole Holder of such
Global Certificate or from giving effect to any written certification, proxy or
other authorization furnished by any Clearing Agency (or its nominee), as a
Holder, with respect to such Global Certificate or impair, as between such
Clearing Agency and owners of beneficial interests in such Global Certificate,
the operation of customary practices governing the exercise of rights of such
Clearing Agency (or its nominee) as Holder of such Global Certificate.

SECTION 3.12      CANCELLATION.

         All Certificates surrendered for delivery of shares of Common Stock on
or after the Purchase Contract Settlement Date, upon the transfer of Debt
Securities, the Applicable Ownership Interest in the appropriate Treasury
Portfolio or Treasury Securities, as the case may be, after the occurrence of a
Termination Event or pursuant to an Early Settlement or Cash Merger Early
Settlement, or upon the registration of a transfer or exchange of a Security, or
a Collateral Substitution or the re-establishment of an Income PRIDES shall, if
surrendered to any Person other than the Agent, be delivered to the Agent and,
if not already cancelled, shall be promptly cancelled by it. The Company may at
any time deliver to the Agent for cancellation any Certificates previously
authenticated, executed and delivered hereunder which the Company may have
acquired in any manner whatsoever, and all Certificates so delivered shall, upon
Issuer Order, be promptly cancelled by the Agent. No Certificates shall be
authenticated, executed on behalf of the Holder and delivered in lieu of or in
exchange for any Certificates cancelled as provided in this Section, except as
expressly permitted by this Agreement. All cancelled Certificates held by the
Agent shall upon written request be returned to the Company.

         If the Company or any Affiliate of the Company shall acquire any
Certificate, such acquisition shall not operate as a cancellation of such
Certificate unless and until such Certificate is delivered to the Agent
cancelled or for cancellation.

SECTION 3.13      ESTABLISHMENT OR REESTABLISHMENT OF GROWTH PRIDES.

         A Holder of an Income PRIDES may, at any time on or prior to the fifth
Business Day immediately preceding the Purchase Contract Settlement Date, create
or recreate a Growth PRIDES and separate the Debt Security or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as applicable, from
the related Purchase Contract in respect of such Income PRIDES by substituting a
Treasury Security for all, but not less than all, the Debt Securities, or the
Applicable Ownership Interest in the appropriate Treasury Portfolio, that form a
part of such Income PRIDES in accordance with this Section 3.13; provided,
however, that if a successful remarketing of the Debt Securities has occurred on
a Remarketing Date or a Tax Event Redemption has occurred, Holders of such
Income PRIDES may make such Collateral Substitutions at any time on or prior to
the second Business Day immediately preceding the Purchase Contract Settlement
Date. Holders may make Collateral Substitutions and establish

                                       26

<PAGE>

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 32,000 Income PRIDES (or such other number of Income
PRIDES as may be determined by the Reset Agent upon a successful remarketing of
Debt Securities if the Reset Date is not an Interest Payment Date) if the
Applicable Ownership Interests in the appropriate Treasury Portfolio are being
substituted by Treasury Securities. To create 40 Growth PRIDES (if a Tax Event
Redemption has not occurred and the Debt Securities remain a component of the
Income PRIDES), or 32,000 Growth PRIDES, or such other number of Growth PRIDES
as may be determined by the Reset Agent upon a successful remarketing of Debt
Securities if the Reset Date is not an Interest Payment Date (if a Tax Event
Redemption has occurred or the Remarketing Treasury Portfolio has replaced the
Debt Securities as a component of the Income PRIDES as a result of a successful
remarketing of such Debt Securities), the Income PRIDES Holder shall

                  (a)      if a Treasury Portfolio has not replaced any 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 fifth Business Day immediately 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 $800,000
         (or $25 multiplied by such number of Income PRIDES as may be determined
         by the Reset Agent as described in (ii) above); 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, 32,000 Income PRIDES (or such other number of Income
         PRIDES as may be determined by the Reset Agent upon a successful
         remarketing of Debt Securities if the Reset Date is not an Interest
         Payment Date), to the Agent accompanied by a notice to the Agent,
         substantially in the form of Exhibit B to the Pledge Agreement, stating
         that the Holder has transferred the relevant types and amounts of
         Treasury Securities to the Collateral Agent and requesting that the
         Agent instruct the Collateral Agent to release the applicable Debt
         Securities or the Applicable Ownership Interest in the appropriate
         Treasury Portfolio, as the case may be, underlying such Income PRIDES,
         whereupon the Agent shall promptly give such instruction to the
         Collateral Agent, substantially in the form of Exhibit A to the Pledge
         Agreement.

         Upon receipt of the Treasury Securities described in clause (a) or (b)
above and the instructions described in clause (c) above, in accordance with the
terms of the Pledge Agreement, the Collateral Agent will release from the
Pledge, to the Agent, on behalf of the Holder, Debt Securities or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as the case may be,
that had been components of such Income PRIDES, free and clear of the Company's
security interest therein, and upon receipt thereof the Agent shall promptly:

                                       27

<PAGE>

         (i)      cancel the related Income PRIDES surrendered and transferred;

         (ii)     transfer the Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, that had
been components of such Income PRIDES to the Holder; and

         (iii)    authenticate, execute on behalf of such Holder and deliver a
Growth PRIDES Certificate executed by the Company in accordance with Section 3.3
evidencing the same number of Purchase Contracts as were evidenced by the
cancelled Income PRIDES.

         Holders who elect to separate the Debt Securities or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as the case may be,
from the related Purchase Contracts and to substitute Treasury Securities for
such Debt Securities or the Applicable Ownership Interest in the appropriate
Treasury Portfolio, as the case may be, shall be responsible for any fees or
expenses payable to the Collateral Agent for its services as Collateral Agent in
respect of the substitution, and the Company shall not be responsible for any
such fees or expenses.

         In the event a Holder making a Collateral Substitution pursuant to this
Section 3.13 fails to effect a book-entry transfer of the Income PRIDES or fails
to deliver an Income PRIDES Certificate to the Agent after depositing the
appropriate Treasury Securities with the Collateral Agent, the Debt Securities
or the Applicable Ownership Interest in the appropriate Treasury Portfolio, as
the case may be, constituting a part of such Income PRIDES, and any interest on
such Debt Securities or distributions with respect to the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, shall be
held in the name of the Agent or its nominee in trust for the benefit of such
Holder, until such Income PRIDES is so transferred or the Income PRIDES
Certificate is so delivered, as the case may be, or, until such Holder provides
evidence satisfactory to the Company and the Agent that such Income PRIDES
Certificate has been destroyed, lost or stolen, together with any indemnity that
may be required by the Agent and the Company.

         Except as described in this Section 3.13, for so long as the Purchase
Contract underlying an Income PRIDES remains in effect, such Income PRIDES shall
not be separable into its constituent parts, and the rights and obligations of
the Holder in respect of the Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, and Purchase
Contract comprising such Income PRIDES may be acquired, and may be transferred
and exchanged, only as an entire Income PRIDES.

SECTION 3.14      REESTABLISHMENT OF INCOME PRIDES.

         A Holder of a Growth PRIDES may, at any time on or prior to the fifth
Business Day immediately preceding the Purchase Contract Settlement Date,
recreate an Income PRIDES by depositing with the Collateral Agent a Debt
Security 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 a Growth PRIDES in
accordance with this Section 3.14; provided, however, that 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

                                       28

<PAGE>

Tax Event Redemption, such Collateral Substitutions may be made at any time on
or prior to the second Business 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 only Debt Securities, or (ii) only
in integral multiples of 32,000 Growth PRIDES (or such other number of Growth
PRIDES as may be determined by the Reset Agent upon a successful remarketing of
Debt Securities if the Reset Date is not an Interest Payment Date) if any
Treasury Security is being replaced by the Applicable Ownership Interest in the
appropriate 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 32,000 Income PRIDES, or such other number of Income PRIDES as may
be determined by the Reset Agent upon a successful remarketing of Debt
Securities if the Reset Date is not an Interest Payment Date (if a Tax Event
Redemption has occurred or the Remarketing Treasury Portfolio has replaced the
Debt Securities as a result of a successful remarketing of such 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 of the
Debt Securities or a Tax Event Redemption, on or prior to the fifth Business Day
immediately 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 Treasury Portfolio for
each 32,000 Income PRIDES (or such other number of Income PRIDES as may be
determined by the Reset Agent upon a successful remarketing of Debt Securities
if the Reset Date is not an Interest Payment Date) being created by the Holder,
and having an aggregate principal amount of $800,000 (or $25 multiplied by such
number of Growth PRIDES as may be determined by the Reset Agent as described in
(ii) above); and

         (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,
32,000 Income PRIDES (or such other number of Income PRIDES as may be determined
by the Reset Agent upon a successful remarketing of Debt Securities if the Reset
Date is not an Interest Payment Date), to the Agent accompanied by a notice to
the Agent, substantially in the form of Exhibit B to the Pledge Agreement,
stating that the Holder has transferred the relevant amount of Debt Securities
or the Applicable Ownership Interest in the appropriate Treasury Portfolio, as
the case may be, to the Collateral Agent and requesting that the Agent instruct
the Collateral Agent to release the Treasury Securities underlying such Growth
PRIDES, whereupon the Agent shall promptly give such instruction to the
Collateral Agent, substantially in the form of Exhibit A to the Pledge
Agreement.

         Upon receipt of the Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, described in
clause (a) or (b) above and the instructions described in clause (c) above, in
accordance with the terms of the Pledge Agreement, the Collateral Agent will
effect the release of the Treasury Securities having a corresponding

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aggregate principal amount from the Pledge to the Agent free and clear of the
Company's security interest therein, and upon receipt thereof the Agent shall
promptly:

         (i)      cancel the related Growth PRIDES surrendered and transferred;

         (ii)     transfer the Treasury Securities that had been components of
such Growth PRIDES to the Holder; and

         (iii)    authenticate, execute on behalf of such Holder and deliver an
Income PRIDES Certificate executed by the Company in accordance with Section 3.3
evidencing the same number of Purchase Contracts as were evidenced by the
cancelled Growth PRIDES.

         Holders who elect to separate Treasury Securities from the related
Purchase Contract and to substitute Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, for such
Treasury Securities shall be responsible for any fees or expenses payable to the
Collateral Agent for its services as Collateral Agent in respect of the
substitution, and the Company shall not be responsible for any such fees or
expenses.

         In the event a Holder making a Collateral Substitution pursuant to this
Section 3.14 fails to effect a book-entry transfer of the Growth PRIDES or fails
to deliver a Growth PRIDES Certificate to the Agent after depositing the Debt
Securities or Applicable Ownership Interest in the appropriate Treasury
Portfolio with the Collateral Agent, the Treasury Securities constituting a part
of such Growth PRIDES Certificate, and any interest on such Treasury Securities,
shall be held in the name of the Agent or its nominee in trust for the benefit
of such Holder, until such Growth PRIDES is so transferred or the Growth PRIDES
is so delivered, or until such Holder provides evidence satisfactory to the
Company and the Agent that such Growth PRIDES has been destroyed, lost or
stolen, together with any indemnity that may be required by the Agent and the
Company.

         Except as provided in this Section 3.14, for so long as the Purchase
Contract underlying a Growth PRIDES remains in effect, such Growth PRIDES shall
not be separable into its constituent parts and the rights and obligations of
the Holder of such Growth PRIDES in respect of the Treasury Security and
Purchase Contract comprising such Growth PRIDES may be acquired, and may be
transferred and exchanged only as an entire Growth PRIDES.

SECTION 3.15      TRANSFER OF COLLATERAL UPON OCCURRENCE OF TERMINATION EVENT.

         Upon the occurrence of a Termination Event and the transfer to the
Agent of the Debt Securities, the Applicable Ownership Interest in the
appropriate Treasury Portfolio or the Treasury Securities, as the case may be,
underlying the Income PRIDES and the Growth PRIDES pursuant to the terms of the
Pledge Agreement, the Agent shall request transfer instructions with respect to
such Debt Securities or the Applicable Ownership Interest in the appropriate
Treasury Portfolio or Treasury Securities, as the case may be, from each Holder
by written request mailed to such Holder at its address as it appears in the
Income PRIDES Register or the Growth PRIDES Register, as the case may be. Upon
book-entry transfer of an Income PRIDES Certificate or Growth PRIDES Certificate
or delivery of an Income PRIDES Certificate or Growth PRIDES Certificate to the
Agent with such transfer instructions, the Agent shall

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<PAGE>

transfer the Debt Securities, the Applicable Ownership Interest in the
appropriate Treasury Portfolio or Treasury Securities, as the case may be,
underlying such Income PRIDES or Growth PRIDES, as the case may be, to such
Holder by book-entry transfer, or other appropriate procedures, in accordance
with such instructions. In the event a Holder of Income PRIDES or Growth PRIDES
fails to effect such transfer or delivery, the Debt Securities, the Applicable
Ownership Interest in the appropriate Treasury Portfolio or Treasury Securities,
as the case may be, underlying such Income PRIDES or Growth PRIDES, as the case
may be, and any interest thereon, shall be held in the name of the Agent or its
nominee in trust for the benefit of such Holder, until such Income PRIDES or
Growth PRIDES are transferred or the Income PRIDES Certificate or Growth PRIDES
Certificate is surrendered or such Holder provides satisfactory evidence that
such Income PRIDES Certificate or Growth PRIDES Certificate has been destroyed,
lost or stolen, together with any indemnity that may be required by the Agent
and the Company. In the case of a Treasury Portfolio or any Treasury Securities,
the Agent may dispose of the subject securities for cash and pay the applicable
portion of such cash to the Holders in lieu of such Holders' Applicable
Ownership Interest in such Treasury Portfolio, or any Treasury Securities, where
such Holder would otherwise have been entitled to receive less than $1,000 of
any such security.

SECTION 3.16      NO CONSENT TO ASSUMPTION.

         Each Holder of a Security, by acceptance thereof, will be deemed
expressly to have withheld any consent to the assumption under Section 365 of
the Bankruptcy Code or otherwise, of the Purchase Contract by the Company, its
trustee in bankruptcy, receiver, liquidator or a person or entity performing
similar functions, in the event that the Company becomes a debtor under the
Bankruptcy Code or subject to other similar State or Federal law providing for
reorganization or liquidation.

                                   ARTICLE IV

                               THE DEBT SECURITIES

SECTION 4.1       PAYMENT OF INTEREST; RIGHTS TO INTEREST PRESERVED; INTEREST
                  RATE RESET; NOTICE.

         A payment of interest on the Debt Securities or distribution with
respect to the Applicable Ownership Interest in the appropriate Treasury
Portfolio, as the case may be, which is paid on any Payment Date shall, subject
to receipt thereof by the Agent from the Collateral Agent as provided by the
terms of the Pledge Agreement, be paid to the Person in whose name the Income
PRIDES Certificate (or one or more Predecessor Income PRIDES Certificates) of
which such Debt Securities or the Applicable Ownership Interest in the
appropriate Treasury Portfolio, as the case may be, are a part is registered at
the close of business on the Record Date for such Payment Date.

         Each Income PRIDES Certificate evidencing Debt Securities delivered
under this Agreement upon registration of transfer of or in exchange for or in
lieu of any other Income PRIDES Certificate shall carry the rights to payment of
interest accrued and unpaid, and to

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<PAGE>

accrue interest, which are carried by the Debt Securities underlying such other
Income PRIDES Certificate.

         In the case of any Income PRIDES with respect to which Cash Settlement
of the underlying Purchase Contract is effected on the Business Day immediately
preceding the Purchase Contract Settlement Date pursuant to prior notice, or
with respect to which Early Settlement of the underlying Purchase Contract is
effected on an Early Settlement Date, or with respect to which Cash Merger Early
Settlement of the underlying Purchase Contract is effected on the Cash Merger
Early Settlement Date, or with respect to which a Collateral Substitution is
effected, in each case on a date that is after any Record Date and on or prior
to the next succeeding Payment Date, interest on the Debt Securities or
distributions with respect to the Applicable Ownership Interest in the
appropriate Treasury Portfolio, as the case may be, underlying such Income
PRIDES otherwise payable on such Payment Date shall be payable on such Payment
Date notwithstanding such Cash Settlement, Early Settlement, Cash Merger Early
Settlement or Collateral Substitution, and such interest or distributions shall,
subject to receipt thereof by the Agent, be payable to the Person in whose name
the Income PRIDES Certificate (or one or more Predecessor Income PRIDES
Certificates) was registered at the close of business on the Record Date. Except
as otherwise expressly provided in the immediately preceding sentence, in the
case of any Income PRIDES with respect to which Cash Settlement, Early
Settlement or Cash Merger Early Settlement of the underlying Purchase Contract
is effected on the Business Day immediately preceding the applicable Purchase
Contract Settlement Date, an Early Settlement Date or a Cash Merger Early
Settlement Date, as the case may be, or with respect to which a Collateral
Substitution has been effected, payment of interest on the related Debt
Securities or distributions with respect to the Applicable Ownership Interest in
the appropriate Treasury Portfolio, as the case may be, that would otherwise be
payable after the Purchase Contract Settlement Date, Early Settlement Date or
Cash Merger Early Settlement Date shall not be payable hereunder to the Holder
of such Income PRIDES; provided, however, that to the extent that such Holder
continues to hold the separated Debt Security that formerly comprised a part of
such Holder's Income PRIDES, such Holder shall be entitled to receive the
payment of interest on such separated Debt Security.

         The Debt Securities shall bear interest at the Reset Rate from the
Reset Date. The Reset Rate shall equal the sum of (i) the Reset Spread and (ii)
the yield on the Applicable Benchmark Treasury in effect on the third Business
Day immediately preceding the Reset Date and shall be determined by the Reset
Agent; provided that the Reset Rate will in no event exceed the maximum rate
permitted by applicable law. On each Remarketing Announcement Date, the Reset
Agent will establish the Reset Spread to be added to the yield on the Applicable
Benchmark Treasury expected to be in effect on the Remarketing Date. In
addition, the Reset Agent will determine on such Remarketing Announcement Date,
the percentage undivided beneficial ownership interest for purposes of clause
(1)(ii) and (iii) of the definition of "Applicable Ownership Interest," which
will be announced by the Company. On the Business Day immediately following the
Remarketing Announcement Date, the Company will cause a notice of (a) the Reset
Spread and the Applicable Benchmark Treasury, (b) any change in the scheduled
Interest Payment Dates and maturity date of the Debt Securities that will become
effective on the Reset Date upon a successful remarketing, to be published in an
Authorized Newspaper and (c) if applicable, the percentage of the undivided
beneficial ownership interest to be published in an Authorized Newspaper. In the
event of a Failed Remarketing, the Coupon

                                       32

<PAGE>

Rate will not be reset and the Debt Securities will continue to bear interest at
the Coupon Rate effective at the time the Debt Securities were initially issued.

         In addition, the Company will request, not later than seven nor more
than 15 calendar days prior to each Remarketing Announcement Date, that the
Depositary (or any successor Clearing Agency or its nominee) notify by
first-class mail, postage prepaid, the Beneficial Owners or Clearing Agency
Participants holding Debt Securities, Income PRIDES and Growth PRIDES of each
Remarketing Announcement Date and the remarketing, including, if the Remarketing
Announcement is being made on the seventh Business Day immediately preceding
August 16, 2006, the procedures that must be followed in the event of a Failed
Remarketing if (1) any holder of PRIDES wishes to settle the related purchase
contract with cash on the Business Day immediately preceding August 16, 2006, or
(2) any holder of Debt Securities wishes to exercise its right to put such Debt
Securities to the Company pursuant to the Indenture.

SECTION 4.2       NOTICE AND VOTING.

         Under and subject to the terms of the Pledge Agreement, the Agent will
be entitled to exercise the voting and any other consensual rights pertaining to
the Pledged Debt Securities but only to the extent instructed by the Holders as
described below. Upon receipt of notice of any meeting at which holders of Debt
Securities are entitled to vote or upon any solicitation of consents, waivers or
proxies of holders of Debt Securities, the Agent shall, as soon as practicable
thereafter, mail to the Holders of Income PRIDES a notice (a) containing such
information as is contained in the notice or solicitation, (b) stating that each
Income PRIDES Holder on the record date set by the Agent therefor (which, to the
extent possible, shall be the same date as the record date for determining the
holders of Debt Securities entitled to vote) shall be entitled to instruct the
Agent as to the exercise of the voting rights pertaining to the Debt Securities
constituting a part of such Holder's Income PRIDES and (c) stating the manner in
which such instructions may be given. Upon the written request of the Holders of
Income PRIDES on such record date, the Agent shall endeavor insofar as
practicable to vote or cause to be voted, in accordance with the instructions
set forth in such requests, the maximum number of Debt Securities as to which
any particular voting instructions are received. In the absence of specific
instructions from the Holder of an Income PRIDES, the Agent shall abstain from
voting the Debt Security constituting a part of such Holder's Income PRIDES. The
Company hereby agrees, if applicable, to solicit Holders of Income PRIDES to
timely instruct the Agent in order to enable the Agent to vote such Debt
Securities.

SECTION 4.3       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 Redemption Price payable on the Tax Event
Redemption Date with respect to the Applicable Principal Amount of Debt
Securities shall be delivered to the Collateral Agent in exchange for the
Pledged Debt Securities. Pursuant to the terms of the Pledge Agreement, the
Collateral Agent will apply an amount equal to the Redemption Amount of such
Redemption Price to purchase on behalf of the Holders of Income PRIDES the Tax
Event Treasury Portfolio and promptly remit the remaining portion of such
Redemption Price to the Agent for payment to the Holders of such Income PRIDES.
The Tax Event Treasury Portfolio will be substituted for

                                       33

<PAGE>

the outstanding Pledged Debt Securities, and will be held by the Collateral
Agent in accordance with the terms of the Pledge 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 occurrence of a Tax
Event Redemption prior to the Purchase Contract Settlement Date, the Holders of
Income PRIDES and the Collateral Agent shall have such security interests,
rights and obligations with respect to the Tax Event Treasury Portfolio as the
Holder of Income PRIDES and the Collateral Agent had in respect of the Debt
Securities subject to the Pledge thereof as provided in Articles II, III, IV, V
and VI of the Pledge Agreement, and any reference herein to the Debt Securities
shall be deemed to be reference to such Tax Event Treasury Portfolio. The
Company may cause to be made in any Income PRIDES Certificates thereafter to be
issued such change in phraseology and form (but not in substance) as may be
appropriate to reflect the substitution of the Tax Event Treasury Portfolio for
Debt Securities as collateral.

         (b)      Unless the Debt Securities have been called for a Tax Event
Redemption, the Company will cause all Debt Securities subject to the Pledge as
a part of the Income PRIDES, and any other Debt Securities held by holders that
have elected to include their Debt Securities in such remarketing to be
remarketed on one or more Remarketing Dates pursuant to the Remarketing
Agreement; provided that no further remarketing shall be required once a
successful remarketing of the Debt Securities has occurred. Upon a successful
remarketing of the Debt Securities, the proceeds of the remarketing of Pledged
Debt Securities (after deducting any Remarketing Fee) shall be delivered to the
Collateral Agent in exchange for the Pledged Debt Securities. Pursuant to the
terms of the Pledge 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 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 the Pledge 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, 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 of the Pledge
Agreement, and any reference herein to the Debt Securities shall be deemed to be
reference to such Remarketing Treasury Portfolio. The Company may cause to be
made in any Income PRIDES Certificates thereafter to be issued such change in
phraseology and form (but not in substance) as may be appropriate to reflect the
substitution of the Remarketing Treasury Portfolio for Debt Securities as
collateral.

SECTION 4.4       CONSENT TO TREATMENT FOR TAX PURPOSES.

         Each Holder of an Income PRIDES or a Growth PRIDES, by its acceptance
thereof, covenants and agrees to treat itself as the owner, for United States
federal, state and local income and franchise tax purposes, of (i) the related
Debt Securities or the Applicable Ownership Interest in the appropriate Treasury
Portfolio, in the case of the Income PRIDES, or (ii) the

                                       34

<PAGE>

Treasury Securities, in the case of the Growth PRIDES. Each Holder of an Income
PRIDES, by its acceptance thereof, further covenants and agrees to treat the
Debt Securities as indebtedness of the Company for United States federal, state
and local income and franchise tax purposes.

                                   ARTICLE V

                             THE PURCHASE CONTRACTS

SECTION 5.1       PURCHASE OF SHARES OF COMMON STOCK.

         Each Purchase Contract shall, unless a Termination Event or an Early
Settlement or Cash Merger Early Settlement in accordance with Section 5.9 hereof
has occurred, obligate the Holder of the related Security to purchase, and the
Company to sell, on the Purchase Contract Settlement Date, for $25 in cash (the
"Purchase Price"), a number of newly issued shares of Common Stock equal to the
applicable Settlement Rate. The "Settlement Rate" is equal to (a) if the
Applicable Market Value (as defined below) is equal to or greater than $33.80
(the "Threshold Appreciation Price"), a number of shares of Common Stock per
Purchase Contract equal to the product of (i) the Stated Amount divided by the
Reference Price, multiplied by (ii) one minus a fraction, the numerator of which
is $7.80 and the denominator of which is the Applicable Market Value, (b) if the
Applicable Market Value is less than the Threshold Appreciation Price, but is
greater than $26.00 (the "Reference Price"), a number of shares of Common Stock
per Purchase Contract equal to $25 divided by the Applicable Market Value and
(c) if the Applicable Market Value is less than or equal to the Reference Price,
0.9615 shares of Common Stock per Purchase Contract, in each case subject to
adjustment as provided in Section 5.6 (and in each case rounded upward or
downward to the nearest 1/10,000th of a share). As provided in Section 5.10, no
fractional shares of Common Stock will be issued upon settlement of Purchase
Contracts.

         The "Applicable Market Value" means the average of the Closing Price
per share of the Common Stock on each of the 20 consecutive Trading Days ending
on the third Trading Day immediately preceding the Purchase Contract Settlement
Date or, in the event of a Cash Merger, ending on the third Business Day
immediately preceding the consummation of the Cash Merger. The "Closing Price"
of the Common Stock on any date of determination means the closing sale price
(or, if no closing price is reported, the last reported sale price) of the
Common Stock on the New York Stock Exchange (the "NYSE") on such date or, if the
Common Stock is not listed for trading on the NYSE on any such date, as reported
in the composite transactions for the principal United States national or
regional securities exchange on which the Common Stock is so listed. If the
Common Stock is not so listed on a United States national or regional securities
exchange, the Closing Price means the last sale price of the Common Stock as
reported by the NASDAQ Stock Market, or if the Common Stock is not so reported,
the last quoted bid price for the Common Stock in the over-the-counter market as
reported by the National Quotation Bureau or similar organization. If such bid
price is not available, the Closing Price means market value of the Common Stock
on such date as determined by a nationally recognized independent investment
banking firm retained by the Company for this purpose. A "Trading Day" means a
day on which the Common Stock (A) is not suspended from trading on any national
or regional securities exchange or association or over-the-counter market at the
close of business and (B) has traded at least once on the national or regional
securities exchange or association or over-the-counter market that is the
primary market for the trading of the Common Stock.

                                       35

<PAGE>

         Each Holder of an Income PRIDES or a Growth PRIDES, by its acceptance
thereof, irrevocably authorizes the Agent to enter into and perform the related
Purchase Contract on its behalf as its attorney-in-fact (including the execution
of Certificates on behalf of such Holder), agrees to be bound by the terms and
provisions thereof, covenants and agrees to perform its obligations under such
Purchase Contracts, and consents to the provisions hereof, irrevocably
authorizes the Agent to enter into and perform the Pledge Agreement on its
behalf as its attorney-in-fact, and consents to and agrees to be bound by the
Pledge of the Debt Securities, the Treasury Portfolios or the Treasury
Securities, as the case may be, pursuant to the Pledge Agreement. Each Holder of
an Income PRIDES or a Growth PRIDES, by its acceptance thereof, further
covenants and agrees, that, to the extent and in the manner provided in Section
5.4 and the Pledge Agreement, but subject to the terms thereof, payments in
respect of the principal of and interest on Debt Securities or the Proceeds of
the Treasury Securities or the Applicable Ownership Interest in any Treasury
Portfolio on the Purchase Contract Settlement Date shall be paid by the
Collateral Agent to the Company in satisfaction of such Holder's obligations
under such Purchase Contract and such Holder shall acquire no right, title or
interest in such payments.

         Upon registration of transfer of a Certificate, the transferee shall be
bound (without the necessity of any other action on the part of such transferee,
except as may be required by the Agent pursuant hereto), under the terms of this
Agreement, the Purchase Contracts underlying such Certificate and the Pledge
Agreement; and the transferor shall be released from the obligations under this
Agreement, the Purchase Contracts underlying the Certificates so transferred and
the Pledge Agreement. The Company covenants and agrees, and each Holder of a
Certificate, by its acceptance thereof, likewise covenants and agrees, to be
bound by the provisions of this paragraph.

SECTION 5.2       CONTRACT ADJUSTMENT PAYMENTS.

         Subject to Section 5.3 herein, the Company shall pay, on each Payment
Date, the Contract Adjustment Payments payable in respect of each Purchase
Contract to the Person in whose name a Certificate (or one or more Predecessor
Certificates) is registered on the Register at the close of business on the
Record Date next preceding such Payment Date. The Contract Adjustment Payments
will be payable at the Corporate Trust Office or, at the option of the Company,
by check mailed to the address of the Person entitled thereto at such Person's
address as it appears on the Income PRIDES Register or Growth PRIDES Register or
by wire transfer to an account appropriately designated in writing by the Person
entitled to payment.

         Upon the occurrence of a Termination Event, the Company's obligation to
pay Contract Adjustment Payments (including any accrued or Deferred Contract
Adjustment Payments) shall cease.

         Each Certificate delivered under this Agreement upon registration of
transfer of or in exchange for or in lieu of any other Certificate (including as
a result of a Collateral Substitution or the re-establishment of an Income
PRIDES) shall carry the rights to Contract Adjustment Payments accrued and
unpaid, and to accrue Contract Adjustment Payments, which were carried by the
Purchase Contracts which were represented by such other Certificates.

                                       36

<PAGE>

         Subject to Section 5.9, in the case of any Security with respect to
which Early Settlement or Cash Merger Early Settlement of the underlying
Purchase Contract is effected on an Early Settlement Date or Cash Merger Early
Settlement Date that is after any Record Date and on or prior to the next
succeeding Payment Date, Contract Adjustment Payments, if any, otherwise payable
on such Payment Date shall be payable on such Payment Date notwithstanding such
early settlement, and such Contract Adjustment Payments shall, subject to
receipt thereof by the Agent, be payable to the Person in whose name the
Certificate evidencing such Security (or one or more Predecessor Certificates)
was registered at the close of business on such Record Date. Except as otherwise
expressly provided in the immediately preceding sentence, in the case of any
Security with respect to which Early Settlement or Cash Merger Early Settlement
of the underlying Purchase Contract is effected on an Early Settlement Date or
Cash Merger Early Settlement, Contract Adjustment Payments that would otherwise
be payable after the Early Settlement Date or Cash Merger Early Settlement Date
with respect to such Purchase Contract shall not be payable.

         The Company's obligations with respect to Contract Adjustment Payments
(including any accrued or Deferred Contract Adjustment Payments), will be
subordinated and junior in right of payment to the Company's obligations under
any Senior Indebtedness. Upon any payment or distribution of the Company's
assets to its creditors upon any dissolution, winding up, liquidation or
reorganization, whether voluntary or involuntary, or in bankruptcy, insolvency,
receivership or other similar proceedings, the holders of all Senior
Indebtedness shall first be entitled to receive payment in full of all amounts
due or to become due thereon, or payment of such amounts shall have been
provided for, before the holders of the Securities shall be entitled to receive
any Contract Adjustment Payments.

         No payment of Contract Adjustment Payments may be made if (i) any
payment default on any Senior Indebtedness has occurred and is continuing beyond
any applicable grace period; or (ii) any default other than a payment default
with respect to Senior Indebtedness occurs and is continuing that permits the
acceleration of the maturity thereof and the Agent receives a written notice of
such default from the Company or the holders of such Senior Indebtedness.

SECTION 5.3       DEFERRAL OF PAYMENT DATES FOR CONTRACT ADJUSTMENT PAYMENTS.

         The Company shall have the right, at any time prior to the Purchase
Contract Settlement Date, to defer the payment of any or all of the Contract
Adjustment Payments otherwise payable on any Payment Date, but only if the
Company shall give the Holders and the Agent written notice of its election to
defer such payment (specifying the amount to be deferred) at least ten Business
Days prior to the earlier of (i) the next succeeding Payment Date or (ii) the
date the Company is required to give notice of the Record Date or Payment Date
with respect to payment of such Contract Adjustment Payments to the NYSE or
other applicable self-regulatory organization or to Holders of the Securities,
but in any event not less than one Business Day prior to such Record Date. In
connection with any Contract Adjustment Payments so deferred, additional
Contract Adjustment Payments on the amounts so deferred will accrue at the rate
of 6.25% per annum (computed on the basis of a 360 day year of twelve 30 day
months), compounding on each succeeding Payment Date, until paid in full (such
deferred installments of Contract Adjustment

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<PAGE>
Payments, if any, together with the accrued additional Contract Adjustment
Payments accrued thereon, being referred to herein as the "Deferred Contract
Adjustment Payments"). Deferred Contract Adjustment Payments, if any, shall be
due on the next succeeding Payment Date except to the extent that payment is
deferred pursuant to and to the extent provided in this Section 5.3. No Contract
Adjustment Payments may be deferred to a date that is after the Purchase
Contract Settlement Date. If the Purchase Contracts are terminated upon the
occurrence of a Termination Event or as a result of an Early Settlement or Cash
Merger Early Settlement, the Holder's right to receive Contract Adjustment
Payments and Deferred Contract Adjustment Payments will terminate.

         In the event that the Company elects to defer the payment of Contract
Adjustment Payments on the Purchase Contracts until the Purchase Contract
Settlement Date, each Holder will receive on the Purchase Contract Settlement
Date, in lieu of a cash payment, a number of shares of Common Stock (in addition
to a number of shares of Common Stock equal to the Settlement Rate) equal to (x)
the aggregate amount of Deferred Contract Adjustment Payments payable to such
Holder divided by (y) the Applicable Market Value.

         No fractional shares of Common Stock will be issued by the Company with
respect to the payment of Deferred Contract Adjustment Payments on the Purchase
Contract Settlement Date. In lieu of fractional shares otherwise issuable with
respect to such payment of Deferred Contract Adjustment Payments, the Holder
will be entitled to receive an amount in cash as provided in Section 5.10.

         In the event the Company exercises its option to defer the payment of
Contract Adjustment Payments, then, until the Deferred Contract Adjustment
Payments have been paid, neither the Company nor any of its subsidiaries shall
declare or pay dividends on, make distributions with respect to, or redeem,
purchase or acquire, or make a liquidation payment with respect to, any of the
Company's capital stock or make guarantee payments with respect to any of the
Company's capital stock other than (i) redemptions, purchases or acquisitions of
capital stock of the Company in connection with the satisfaction by the Company
in connection with any employment contract, benefit plan or other similar
arrangement with or for the benefit of employees, officers, directors or agents
or a stock purchase or dividend reinvestment plan, or the satisfaction by the
Company of its obligations pursuant to any contract or security outstanding on
the date of such event requiring the Company to redeem, purchase or acquire its
capital stock, (ii) as a result of a reclassification of the Company's capital
stock or the exchange or conversion of all or a portion of one class or series
of the Company's capital stock for another class or series of the Company's
capital stock, (iii) the purchase of fractional interests in shares of the
Company's capital stock pursuant to the conversion or exchange provisions of the
Company's capital stock or the security being converted or exchanged, (iv)
dividends or distributions in capital stock of the Company (or rights to acquire
capital stock of the Company), or repurchases, redemptions or acquisitions of
capital stock in connection with the issuance or exchange of capital stock of
the Company (or securities convertible into or exchangeable for shares of the
Company's capital stock) or (v) redemptions, exchanges or repurchases of any
rights outstanding under a shareholder rights plan of the Company or payment
thereunder of a dividend or distribution of or with respect to rights in the
future.

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<PAGE>

SECTION 5.4       PAYMENT OF PURCHASE PRICE.

        (a)       (i)      Unless a Treasury Portfolio has replaced the Debt
Securities as a component of the Income PRIDES or a Holder settles the
underlying Purchase Contract through the early delivery of cash to the Agent in
the manner described in Section 5.9, each Holder of an Income PRIDES must notify
the Agent of its intention to pay in cash ("Cash Settlement") the Purchase Price
for the shares of Common Stock to be purchased pursuant to the Purchase Contract
on the Purchase Contract Settlement Date by presenting and surrendering to the
Agent the Income PRIDES Certificate with a notice in substantially the form of
Exhibit C hereto completed and executed. Such presentation, surrender and notice
shall be made on or prior to 5:00 p.m., New York City time, on the fifth
Business Day immediately preceding the Purchase Contract Settlement Date. The
Agent shall promptly notify the Collateral Agent of the receipt of such a notice
from a Holder intending to make a Cash Settlement. So long as the Securities are
held by the Depositary, such payments must be made and such notices must be
given by Beneficial Owners through the procedures of the Depositary.

         (ii)     A Holder of an Income PRIDES who has so notified the Agent of
its intention to make a Cash Settlement is required to pay the Purchase Price to
the Collateral Agent 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 each
case in immediately available funds payable to or upon the order of the Company.
Any cash received by the Collateral Agent will be invested promptly by the
Collateral Agent in Permitted Investments and paid to the Company on the
Purchase Contract Settlement Date in settlement of the Purchase Contract in
accordance with the terms of this Agreement and the Pledge Agreement. Any funds
received by the Collateral Agent in respect of the investment earnings from the
investment in such Permitted Investments, will be distributed to the Agent when
received for payment to the Holder.

         (iii)    If a Holder of an Income PRIDES fails to notify the Agent of
its intention to make a Cash Settlement in accordance with paragraph (a)(i)
above, such failure shall constitute a default under the Purchase Contract and
the Holder shall be deemed to have consented to the disposition of the Pledged
Debt Securities pursuant to the remarketing as described in paragraph (b) below.
If a Holder of an Income PRIDES does notify the Agent as provided in paragraph
(a)(i) above of its intention to pay the Purchase Price in cash, but fails to
make such payment as required by paragraph (a)(ii) above, such failure shall
also constitute a default; however, the 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, including those rights specified in paragraph (c) below.

         (b)      In order to dispose of the Debt Securities of Income PRIDES
Holders who have not notified the Agent of their intention to effect a Cash
Settlement with respect to the Purchase Contract Settlement Date as provided in
paragraph (a)(i) above, the Company shall engage the Remarketing Agent pursuant
to the Remarketing Agreement to sell such Debt Securities. In order to
facilitate the remarketing, the Agent shall notify the Remarketing Agent, by
10:00 a.m., New York City time, on the fourth Business Day immediately preceding
the Purchase Contract Settlement Date, of the aggregate number of Debt
Securities to be remarketed. Concurrently, the Collateral Agent, pursuant to the
terms of the Pledge Agreement, will present for remarketing

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such Debt Securities to the Remarketing Agent. Upon receipt of such notice from
the Agent and such Debt Securities from the Collateral Agent, the Remarketing
Agent will, on the third Business Day immediately preceding the Purchase
Contract Settlement Date, use their reasonable efforts to remarket such Debt
Securities on such date at a price of approximately 100.25% (but not less than
100%) of the aggregate principal amount of such Debt Securities, plus the
Remarketing Fee. After deducting the Remarketing Fee, the Remarketing Agent will
remit the remaining portion of the proceeds from such remarketing to the
Collateral Agent. Such portion of the proceeds, equal to the aggregate principal
amount of such Debt Securities, will automatically be applied by the Collateral
Agent, in accordance with the Pledge Agreement to satisfy in full such Income
PRIDES Holders' obligations to pay the Purchase Price for the Common Stock under
the related Purchase Contracts on the Purchase Contract Settlement Date. Any
proceeds in excess of those required to pay the Purchase Price and the
Remarketing Fee will be remitted to the Agent for payment to the Holders of the
related Income PRIDES. Income PRIDES Holders whose Debt Securities are so
remarketed will not otherwise be responsible for the payment of any Remarketing
Fee in connection therewith. If such a remarketing results in a Failed
Remarketing, the Collateral Agent, for the benefit of the Company, will exercise
its rights as a secured party with respect to such Debt Securities, including
those actions specified in paragraph (c) below; provided, that if upon a Failed
Remarketing the Collateral Agent exercises such rights for the benefit of the
Company with respect to such Debt Securities, any accrued and unpaid interest on
such Debt Securities will become payable by the Company to the Agent for payment
to the Holder of the Income PRIDES to which such Debt Securities relate. Such
payment will be made by the Company on or prior to 11 a.m., New York City time,
on the Purchase Contract Settlement Date in lawful money of the United States by
certified or cashiers' check or wire transfer, in each case, in immediately
available funds payable to or upon the order of the Agent. The Company will
cause a notice of such Failed Remarketing to be published not later than the
Business Day immediately preceding the Purchase Contract Settlement Date in an
Authorized Newspaper.

         (c)      With respect to any Debt Securities beneficially owned by
Holders who have elected Cash Settlement but failed to deliver cash as required
in (a)(ii) above, or with respect to Debt Securities included in a Failed
Remarketing, the Collateral Agent for the benefit of the Company reserves all of
its rights as a secured party with respect thereto and, subject to applicable
law and paragraph (h) below, may, among other things, (i) retain such Debt
Securities in full satisfaction of the Holders' obligations under the Purchase
Contracts or (ii) sell such Debt Securities in one or more public or private
sales and apply the proceeds of such sale in full satisfaction of the Holders'
obligations under the Purchase Contracts.

        (d)       (i)      Unless a Holder of a Growth PRIDES or Income PRIDES
(if a Treasury Portfolio has replaced the Debt Securities as a component of the
Income PRIDES) settles the underlying Purchase Contract through the early
delivery of cash to the Purchase Contract Agent in the manner described in
Section 5.9, each Holder of a Growth PRIDES or Income PRIDES (if a Treasury
Portfolio has replaced the Debt Securities as a component of the Income PRIDES)
must notify the Agent of its intention to pay in cash the Purchase Price for the
shares of Common Stock to be purchased pursuant to the Purchase Contract on the
Purchase Contract Settlement Date by presenting and surrendering to the Agent
the Growth PRIDES Certificate or Income PRIDES Certificate, as the case may be,
with a notice in substantially the form of Exhibit C hereto completed and
executed. Such presentation, surrender and notice must be made on or

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<PAGE>

prior to 5:00 p.m., New York City time, on the second Business Day immediately
preceding the Purchase Contract Settlement Date. The Agent shall promptly notify
the Collateral Agent of the receipt of such notice from a Holder intending to
make a Cash Settlement.

         (ii)     A Holder of a Growth PRIDES or Income PRIDES (if a Treasury
Portfolio has replaced the Debt Securities as a component of the Income PRIDES),
who has so notified the Agent of its intention to make a Cash Settlement in
accordance with paragraph (d)(i) above is required to pay the Purchase Price to
the Collateral Agent 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 each
case, in immediately available funds payable to or upon the order of the
Company. Any cash received by the Collateral Agent will be invested promptly by
the Collateral Agent in Permitted Investments and paid to the Company on the
Purchase Contract Settlement Date in settlement of the Purchase Contract in
accordance with the terms of this Agreement and the Pledge Agreement. Any funds
received by the Collateral Agent in respect of the investment earnings from the
investment in such Permitted Investments will be distributed to the Agent when
received for payment to the Holder.

         (iii)    If a Holder of a Growth PRIDES or Income PRIDES (if a Treasury
Portfolio has replaced the Debt Securities as a component of the Income PRIDES),
fails to notify the Agent of its intention to make a Cash Settlement in
accordance with paragraph (d)(i) above, or if such Holder does notify the Agent
as provided in paragraph (d)(i) above of its intention to pay the Purchase Price
in cash, but fails to make such payment as required by paragraph (d)(ii) above,
then such failure shall constitute a default under the Purchase Contract and
upon the maturity of the Pledged Treasury Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, held by the
Collateral Agent on the Business Day immediately prior to the Purchase Contract
Settlement Date, the principal amount of the Treasury Securities or the
Applicable Ownership Interest in the appropriate Treasury Portfolio, as the case
may be, received by the Collateral Agent will be invested promptly in overnight
Permitted Investments. On the Purchase Contract Settlement Date an amount equal
to the Purchase Price will be remitted to the Company as payment thereof without
receiving any instructions from the Holder. In the event the sum of the proceeds
from the related Pledged Treasury Securities or the Applicable Ownership
Interest in the appropriate 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 Agent for the benefit of the Holder of
the related Growth PRIDES or Income PRIDES when received.

         (e)      Any distribution to Holders of excess funds and interest
described above, shall be payable at the Corporate Trust Office maintained for
that purpose or, at the option of the Holder, by check mailed to the address of
the Person entitled thereto at such address as it appears on the Register.

         (f)      The Company shall not be obligated to issue any shares of
Common Stock in respect of a Purchase Contract or deliver any certificate
therefor to the Holder unless it shall have received payment in full of the
Purchase Price for the shares of Common Stock to be purchased thereunder in the
manner herein set forth.

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<PAGE>

         (g)      Upon Cash Settlement with respect to a Purchase Contract, (i)
the Collateral Agent will in accordance with the terms of the Pledge Agreement
cause the Pledged Debt Security or the Pledged Applicable Ownership Interest in
the appropriate Treasury Portfolio, as the case may be, or the Pledged Treasury
Security underlying the relevant Security to be released from the Pledge by the
Collateral Agent free and clear of any security interest of the Company and
transferred to the Agent for delivery to the Holder thereof or its designee as
soon as practicable and (ii) subject to the receipt thereof from the Collateral
Agent, the Agent shall, by book-entry transfer, or other appropriate procedures,
in accordance with instructions provided by the Holder thereof, transfer such
Debt Security or the Applicable Ownership Interest in the appropriate Treasury
Portfolio, as the case may be, or such Treasury Security (or, if no such
instructions are given to the Agent by the Holder, the Agent shall hold such
Debt Security or the Applicable Ownership Interest in the appropriate Treasury
Portfolio, as the case may be, or such Treasury Security, and any distribution
thereon, in the name of the Agent or its nominee in trust for the benefit of
such Holder).

         (h)      The obligations of the Holders to pay the Purchase Price on
the Purchase Contract Settlement Date are non-recourse obligations and are
payable solely out of any Cash Settlement or the proceeds of any Collateral
pledged to secure the obligations of the Holders with respect to such Purchase
Price, and in no event will Holders be liable for any deficiency between the
proceeds of Collateral disposition and the Purchase Price.

SECTION 5.5       ISSUANCE OF SHARES OF COMMON STOCK.

         Unless a Termination Event shall have occurred, and except with respect
to Purchase Contracts with respect to which there has been an Early Settlement
or Cash Merger Early Settlement, on the Purchase Contract Settlement Date, upon
the Company's receipt of payment in full of the Purchase Price for the shares of
Common Stock purchased by the Holders pursuant to the foregoing provisions of
this Article and subject to Section 5.6(b), the Company shall issue and deposit
with the Agent, for the benefit of the Holders of the Outstanding Securities,
one or more certificates representing the newly issued shares of Common Stock
registered in the name of the Agent (or its nominee) as custodian for the
Holders (such certificates for shares of Common Stock, together with any
dividends or distributions for which both a record date and payment date for
such dividend or distribution has occurred after the Purchase Contract
Settlement Date, being hereinafter referred to as the "Purchase Contract
Settlement Fund") to which the Holders are entitled hereunder. Subject to the
foregoing, upon surrender of a Certificate to the Agent on or after the Purchase
Contract Settlement Date, together with settlement instructions thereon duly
completed and executed, the Holder of such Certificate shall be entitled to
receive in exchange therefor a certificate representing that number of whole
shares of Common Stock which such Holder is entitled to receive pursuant to the
provisions of this Article V (after taking into account all Securities then held
by such Holder) together with cash in lieu of fractional shares as provided in
Section 5.10 and any dividends or distributions with respect to such shares
constituting part of the Purchase Contract Settlement Fund, but without any
interest thereon, and any Certificate so surrendered shall forthwith be
cancelled. Such shares shall be registered in the name of the Holder or the
Holder's designee as specified in the settlement instructions provided by the
Holder to the Agent. If any shares of Common Stock issued in respect of a
Purchase Contract are to be registered to a Person other than the Person in
whose name the Certificate evidencing such Purchase Contract is registered, no
such registration

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shall be made unless the Person requesting such registration has paid any
transfer and other taxes required by reason of such registration in a name other
than that of the registered Holder of the Certificate evidencing such Purchase
Contract or has established to the satisfaction of the Company that such tax
either has been paid or is not payable.

SECTION 5.6       ADJUSTMENT OF SETTLEMENT RATE.

         (a)      Adjustments for Dividends, Distributions, Stock Splits, Etc.

         (1)      In case the Company shall pay or make a dividend or other
distribution on the Common Stock in Common Stock, the Settlement Rate, as in
effect at the opening of business on the day following the date fixed for the
determination of stockholders entitled to receive such dividend or other
distribution shall be increased by dividing such Settlement Rate by a fraction
of which the numerator shall be the number of shares of Common Stock outstanding
at the close of business on the date fixed for such determination and the
denominator shall be the sum of such number of shares and the total number of
shares constituting such dividend or other distribution, such increase to become
effective immediately after the opening of business on the day following the
date fixed for such determination. For the purposes of this paragraph (1), the
number of shares of Common Stock at any time outstanding shall not include
shares held in the treasury of the Company but shall include any shares issuable
in respect of any scrip certificates issued in lieu of fractions of shares of
Common Stock. The Company will not pay any dividend or make any distribution on
shares of Common Stock held in the treasury of the Company.

         (2)      In case the Company shall issue rights, options or warrants to
all holders of its Common Stock that are not available on an equivalent basis to
Holders of the Securities upon settlement of the Purchase Contracts underlying
such Securities entitling such holders of the Common Stock, for a period
expiring within 45 days after the record date for the determination of
stockholders entitled to receive such rights, options or warrants, to subscribe
for or purchase shares of Common Stock at a price per share less than the
Current Market Price per share of the Common Stock on the date fixed for the
determination of stockholders entitled to receive such rights, options or
warrants (other than pursuant to any dividend reinvestment plan or share
purchase plan, including such a plan that provides for purchases of Common Stock
by non-shareholders), the Settlement Rate, in effect at the opening of business
on the day following the date fixed for such determination shall be increased by
dividing such Settlement Rate, by a fraction of which the numerator shall be the
number of shares of Common Stock outstanding at the close of business on the
date fixed for such determination plus the number of shares of Common Stock
which the aggregate of the offering price of the total number of shares of
Common Stock so offered for subscription or purchase would purchase at such
Current Market Price and the denominator shall be the number of shares of Common
Stock outstanding at the close of business on the date fixed for such
determination plus the number of shares of Common Stock so offered for
subscription or purchase, such increase to become effective immediately after
the opening of business on the day following the date fixed for such
determination. For the purposes of this paragraph (2), the number of shares of
Common Stock at any time outstanding shall not include shares held in the
treasury of the Company but shall include any shares issuable in respect of any
scrip certificates issued in lieu of fractions of shares of Common Stock. The
Company shall not issue any such rights, options or warrants in respect of
shares of Common Stock held in the treasury of the Company.

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<PAGE>

         (3)      In case outstanding shares of Common Stock shall be subdivided
or split into a greater number of shares of Common Stock, the Settlement Rate,
in effect at the opening of business on the day following the day upon which
such subdivision or split becomes effective shall be proportionately increased,
and, conversely, in case outstanding shares of Common Stock shall each be
combined into a smaller number of shares of Common Stock, the Settlement Rate,
in effect at the opening of business on the day following the day upon which
such combination becomes effective shall be proportionately reduced, such
increase or reduction, as the case may be, to become effective immediately after
the opening of business on the day following the day upon which such
subdivision, split or combination becomes effective.

         (4)      In case the Company shall, by dividend or otherwise,
distribute to all holders of its Common Stock evidences of its indebtedness or
assets (including securities, but excluding any rights or warrants referred to
in paragraph (2) of this Section, any dividend or distribution paid exclusively
in cash and any dividend or distribution referred to in paragraph (1) of this
Section), the Settlement Rate, in effect at the opening of business on the day
following the day on which such dividend or distribution was effected, shall be
adjusted so that the same shall equal the rate determined by dividing the
Settlement Rate in effect immediately prior to the close of business on the date
fixed for the determination of stockholders entitled to receive such
distribution by a fraction of which the numerator shall be the Current Market
Price per share of the Common Stock on the date fixed for such determination
less the then fair market value (as determined by the Board of Directors, whose
determination shall be conclusive and described in a Board Resolution) of the
portion of the assets or evidences of indebtedness so distributed applicable to
one share of Common Stock and the denominator shall be such Current Market Price
per share of the Common Stock, such adjustment to become effective immediately
prior to the opening of business on the day following the date fixed for the
determination of stockholders entitled to receive such distribution. In any case
in which this paragraph (4) is applicable, paragraph (2) of this Section shall
not be applicable.

         (5)      In case the Company shall, (I) by dividend or otherwise,
distribute to all holders of its Common Stock cash, other than regular annual
cash dividends, (excluding any cash that is distributed in a Reorganization
Event to which Section 5.6(b) applies or as part of a distribution referred to
in paragraph (4) of this Section) in an aggregate amount that, combined together
with (II) the aggregate amount of any other distributions to all holders of its
Common Stock made exclusively in cash within the 12 months preceding the date of
payment of such distribution and in respect of which no adjustment pursuant to
this paragraph (5) or paragraph (6) of this Section has been made (other than
regular annual cash dividends) and (III) the aggregate of any cash plus the fair
market value (as determined by the Board of Directors, whose determination shall
be conclusive and described in a Board Resolution) of consideration payable in
respect of any tender or exchange offer (other than consideration payable in
respect of any odd-lot tender offer) by the Company or any of its subsidiaries
for all or any portion of the Common Stock concluded within the 12 months
preceding the date of payment of the distribution described in clause (I) above
and in respect of which no adjustment pursuant to this paragraph (5) or
paragraph (6) of this Section has been made, exceeds 10% of the product of the
Current Market Price per share of the Common Stock on the date for the
determination of holders of shares of Common Stock entitled to receive such
distribution times the number of shares of Common Stock outstanding on such
date, then, and in each such case, immediately after the close of business on
such date for determination, the Settlement Rate, shall be increased so that the
same shall equal the rate

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determined by dividing the Settlement Rate in effect immediately prior to the
close of business on the date fixed for determination of the stockholders
entitled to receive such distribution by a fraction (i) the numerator of which
shall be equal to the Current Market Price per share of the Common Stock on the
date fixed for such determination less an amount equal to the quotient of (x)
the combined amount distributed or payable in the transactions described in
clauses (I), (II) and (III) above and (y) the number of shares of Common Stock
outstanding on such date for determination and (ii) the denominator of which
shall be equal to the Current Market Price per share of the Common Stock on such
date for determination.

         (6)      In case (I) a tender or exchange offer made by the Company or
any subsidiary of the Company for all or any portion of the Common Stock shall
expire and such tender or exchange offer (as amended upon the expiration
thereof) shall require the payment to stockholders (based on the acceptance (up
to any maximum specified in the terms of the tender or exchange offer) of
Purchased Shares (as defined below)) of an aggregate consideration having a fair
market value (as determined by the Board of Directors, whose determination shall
be conclusive and described in a Board Resolution) that combined together with
(II) the aggregate of the cash plus the fair market value (as determined by the
Board of Directors, whose determination shall be conclusive and described in a
Board Resolution), as of the expiration of such tender or exchange offer, of
consideration payable in respect of any other tender or exchange offer (other
than consideration payable in respect of any odd-lot tender offer), by the
Company or any subsidiary of the Company for all or any portion of the Common
Stock expiring within the 12 months preceding the expiration of such tender or
exchange offer and in respect of which no adjustment pursuant to paragraph (5)
of this Section or this paragraph (6) has been made and (III) the aggregate
amount of any distributions to all holders of the Company's Common Stock made
exclusively in cash (other than regular annual cash dividends) within the 12
months preceding the expiration of such tender or exchange offer and in respect
of which no adjustment pursuant to paragraph (5) of this Section or this
paragraph (6) has been made, exceeds 10% of the product of the Current Market
Price per share of the Common Stock as of the last time (the "Expiration Time")
tenders could have been made pursuant to such tender or exchange offer (as it
may be amended) times the number of shares of Common Stock outstanding
(including any tendered shares) on the Expiration Time, then, and in each such
case, immediately prior to the opening of business on the day after the date of
the Expiration Time, the Settlement Rate, shall be adjusted so that the same
shall equal the rate determined by dividing the Settlement Rate immediately
prior to the close of business on the date of the Expiration Time by a fraction
(i) the numerator of which shall be equal to (A) the product of (I) the Current
Market Price per share of the Common Stock on the date of the Expiration Time
and (II) the number of shares of Common Stock outstanding (including any
tendered shares) on the Expiration Time less (B) the amount of cash plus the
fair market value (determined as aforesaid) of the aggregate consideration
payable to stockholders based on the transactions described in clauses (I), (II)
and (III) above (assuming in the case of clause (I) the acceptance, up to any
maximum specified in the terms of the tender or exchange offer, of Purchased
Shares), and (ii) the denominator of which shall be equal to the product of (A)
the Current Market Price per share of the Common Stock as of the Expiration Time
and (B) the number of shares of Common Stock outstanding (including any tendered
shares) as of the Expiration Time less the number of all shares validly tendered
and not withdrawn as of the Expiration Time (the shares deemed so accepted, up
to any such maximum, being referred to as the "Purchased Shares").

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         (7)      The reclassification of Common Stock into securities including
securities other than Common Stock (other than any reclassification upon a
Reorganization Event to which Section 5.6(b) applies) shall be deemed to involve
(a) a distribution of such securities other than Common Stock to all holders of
Common Stock (and the effective date of such reclassification shall be deemed to
be "the date fixed for the determination of stockholders entitled to receive
such distribution" and the "date fixed for such determination" within the
meaning of paragraph (4) of this Section), and (b) a subdivision, split or
combination, as the case may be, of the number of shares of Common Stock
outstanding immediately prior to such reclassification into the number of shares
of Common Stock outstanding immediately thereafter (and the effective date of
such reclassification shall be deemed to be "the day upon which such subdivision
or split becomes effective" or "the day upon which such combination becomes
effective", as the case may be, and "the day upon which such subdivision, split
or combination becomes effective" within the meaning of paragraph (3) of this
Section).

         (8)      The "Current Market Price" per share of Common Stock on any
day means the average of the daily Closing Prices for the five consecutive
Trading Days selected by the Company commencing not more than 30 Trading Days
before, and ending not later than, the earlier of the day in question and the
day before the "ex date" with respect to the issuance or distribution requiring
such computation. For purposes of this paragraph, the term "ex date," when used
with respect to any issuance or distribution, shall mean the first date on which
the Common Stock trades regular way the applicable exchange or in the applicable
market without the right to receive such issuance or distribution.

         (9)      All adjustments to the Settlement Rate, shall be calculated to
the nearest 1/10,000th of a share of Common Stock (or if there is not a nearest
1/10,000th of a share to the next lower 1/10,000th of a share). No adjustment in
the Settlement Rate shall be required unless such adjustment would require an
increase or decrease of at least one percent therein; provided, however, that
any adjustments which by reason of this subparagraph are not required to be made
shall be carried forward and taken into account in any subsequent adjustment. If
an adjustment is made to the Settlement Rate pursuant to paragraph (1), (2),
(3), (4), (5), (6), (7) or (10) of this Section 5.6(a), an adjustment shall also
be made to the Applicable Market Value solely to determine which of clauses (a),
(b) or (c) of the definition of Settlement Rate in Section 5.1 will apply on the
Purchase Contract Settlement Date. Such adjustment shall be made by multiplying
the Applicable Market Value by a fraction of which the numerator shall be the
Settlement Rate immediately after such adjustment pursuant to paragraph (1),
(2), (3), (4), (5), (6), (7) or (10) of this Section 5.6(a) and the denominator
shall be the Settlement Rate immediately before such adjustment; provided,
however, that if such adjustment to the Settlement Rate is required to be made
pursuant to the occurrence of any of the events contemplated by paragraph (1),
(2), (3), (4), (5), (7) or (10) of this Section 5.6(a) during the period taken
into consideration for determining the Applicable Market Value, appropriate and
customary adjustments shall be made to the Settlement Rate.

         (10)     The Company may make such increases in the Settlement Rate, in
addition to those required by this Section, as it considers to be advisable in
order to avoid or diminish the effect of any income tax to any holders of shares
of Common Stock resulting from any dividend or distribution of stock or issuance
of rights or warrants to purchase or subscribe for stock or from any event
treated as such for income tax purposes or for any other reasons.

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<PAGE>

         (b)      Adjustment for Consolidation, Merger or Other Reorganization
Event. In the event of (i) any consolidation or merger of the Company with or
into another Person (other than a merger or consolidation in which the Company
is the continuing corporation and in which the Common Stock outstanding
immediately prior to the merger or consolidation is not exchanged for cash,
securities or other property of the Company or another corporation), (ii) any
sale, transfer, lease or conveyance to another Person of the property of the
Company as an entirety or substantially as an entirety, (iii) any statutory
exchange of securities of the Company with another Person (other than in
connection with a merger or acquisition) or (iv) any liquidation, dissolution or
winding up of the Company other than as a result of or after the occurrence of a
Termination Event (any such event, a "Reorganization Event"), the Settlement
Rate will be adjusted to provide that each Holder of Securities will receive on
the Purchase Contract Settlement Date with respect to each Purchase Contract
forming a part thereof, the kind and amount of securities, cash and other
property receivable upon such Reorganization Event (without any interest
thereon, and without any right to dividends or distribution thereon which have a
record date that is prior to the Purchase Contract Settlement Date) by a Holder
of the number of shares of Common Stock issuable on account of each Purchase
Contract if the Purchase Contract Settlement Date had occurred immediately prior
to such Reorganization Event assuming such Holder of Common Stock is not a
Person with which the Company consolidated or into which the Company merged or
which merged into the Company or with which such statutory exchange of
securities was effected or to which such sale, transfer, lease or conveyance was
made, as the case may be (any such Person, a "Constituent Person"), or an
Affiliate of a Constituent Person to the extent such Reorganization Event
provides for different treatment of Common Stock held by Affiliates of the
Company and non-affiliates and such Holder failed to exercise its rights of
election, if any, as to the kind or amount of securities, cash and other
property receivable upon such Reorganization Event (provided that if the kind or
amount of securities, cash and other property receivable upon such
Reorganization Event is not the same for each share of Common Stock held
immediately prior to such Reorganization Event by other than a Constituent
Person or an Affiliate thereof and in respect of which such rights of election
shall not have been exercised ("non-electing share"), then for the purpose of
this Section the kind and amount of securities, cash and other property
receivable upon such Reorganization Event by each non-electing share shall be
deemed to be the kind and amount so receivable per share by a plurality of the
non-electing shares). In the event of such a Reorganization Event, the Person
formed by such consolidation, merger or exchange or the Person which acquires
the assets of the Company or, in the event of a liquidation or dissolution of
the Company, the Company or a liquidating trust created in connection therewith,
shall execute and deliver to the Agent an agreement supplemental hereto
providing that the Holders of each Outstanding Security shall have the rights
provided by this Section 5.6. Such supplemental agreement shall provide for
adjustments which, for events subsequent to the effective date of such
supplemental agreement, shall be as nearly equivalent as may be practicable to
the adjustments provided for in this Section. The above provisions of this
Section shall similarly apply to successive Reorganization Events.

SECTION 5.7       NOTICE OF ADJUSTMENTS AND CERTAIN OTHER EVENTS.

         (a)      Whenever the Settlement Rate is adjusted as herein provided,
the Company shall:

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         (i)      forthwith compute the Settlement Rate in accordance with
Section 5.6 and prepare and transmit to the Agent a Company Certificate setting
forth the Settlement Rate, the method of calculation thereof in reasonable
detail, and the facts requiring such adjustment and upon which such adjustment
is based; and

         (ii)     within 10 Business Days following the occurrence of an event
that requires an adjustment to the Settlement Rate pursuant to Section 5.6 (or
if the Company is not aware of such occurrence, as soon as practicable after
becoming so aware), provide a written notice to the Holders of the Securities of
the occurrence of such event and a statement in reasonable detail setting forth
the method by which the adjustment to the Settlement Rate was determined and
setting forth the adjusted Settlement Rate.

         (b)      The Agent shall not at any time be under any duty or
responsibility to any Holder of Securities to determine whether any facts exist
which may require any adjustment of the Settlement Rate, or with respect to the
nature or extent or calculation of any such adjustment when made, or with
respect to the method employed in making the same. The Agent shall not be
accountable with respect to the validity or value (or the kind or amount) of any
shares of Common Stock, or of any securities or property, which may at the time
be issued or delivered with respect to any Purchase Contract, and the Agent
makes no representation with respect thereto. The Agent shall not be responsible
for any failure of the Company to issue, transfer or deliver any shares of
Common Stock pursuant to a Purchase Contract or to comply with any of the
duties, responsibilities or covenants of the Company contained in this Article.

SECTION 5.8       TERMINATION EVENT; NOTICE.

         The Purchase Contracts and all obligations and rights of the Company
and the Holders thereunder, including, without limitation, the rights of the
Holders to receive and the obligation of the Company to pay any Contract
Adjustment Payments or any Deferred Contract Adjustment Payments, and the rights
and obligations of the Holders to purchase Common Stock, will immediately and
automatically terminate, without the necessity of any notice or action by any
Holder, the Agent or the Company, if, on or prior to the Purchase Contract
Settlement Date, a Termination Event shall have occurred. Upon the occurrence of
a Termination Event, the Company shall promptly but in no event later than two
Business Days thereafter give written notice thereof to the Agent, the
Collateral Agent and to the Holders, at their addresses as they appear in the
applicable Register. Upon and after the occurrence of a Termination Event, the
Securities shall thereafter represent the right to receive the Debt Securities
or the Applicable Ownership Interest in the appropriate Treasury Portfolio, as
the case may be, forming a part of such Securities in the case of Income PRIDES,
or Treasury Securities in the case of Growth PRIDES, in accordance with the
provisions of Section 4.3 of the Pledge Agreement.

SECTION 5.9       EARLY SETTLEMENT.

         (a)      At Option of Holder.

         (i)      A holder of Income PRIDES may settle the related Purchase
Contracts in their entirety at any time on or prior to the fifth Business Day
immediately preceding the Purchase Contract Settlement Date in the manner
described herein, but only in integral multiples of 40

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<PAGE>

Income PRIDES; provided, however, if a Treasury Portfolio has become a component
of the Income PRIDES, Holders of Income PRIDES may settle early only in integral
multiples of 32,000 Income PRIDES (or such other number of Income PRIDES as may
be determined by the Reset Agent upon a successful remarketing of Debt
Securities if the Reset Date is not an Interest Payment Date). A holder of
Growth PRIDES may settle the related Purchase Contracts in their entirety at any
time on or prior to the second Business Day immediately preceding the Purchase
Contract Settlement Date in the manner described herein (in either case, "Early
Settlement") but only in integral multiples of 40 Growth PRIDES. The right to
Early Settlement is subject to there being in effect, if so required under
Federal securities laws, a registration statement covering the shares of Common
Stock to be delivered in respect of the Purchase Contracts being settled (it
being understood that, if so required under Federal securities laws, the Company
shall use commercially reasonable efforts to (1) cause such a registration
statement to become effective and (2) provide a prospectus in connection
therewith, in each case, in a form appropriate for Early Settlements). Upon
Early Settlement, (i) the holder's rights to receive Deferred Contract
Adjustment Payments, if any, on the Purchase Contracts being settled will be
forfeited, (ii) the holder's right to receive additional Contract Adjustment
Payments in respect of such Purchase Contracts will terminate and (iii) no
adjustment will be made to or for the holder on account of Deferred Contract
Adjustment Payments, or any amount accrued in respect of Contract Adjustment
Payments. In order to exercise the right to effect any Early Settlement with
respect to any Purchase Contracts, the Holder of the Certificate evidencing
Securities shall deliver such Certificate to the Agent at the Corporate Trust
Office duly endorsed for transfer to the Company or in blank with the form of
Election to Settle Early therein duly completed and executed and accompanied by
payment payable to the Company in immediately available funds in an amount (the
"Early Settlement Amount") equal to the sum of (x) $25 times the number of
Purchase Contracts being settled and (y) if such delivery is made with respect
to any Purchase Contracts during the period from the close of business on any
Record Date next preceding any Payment Date to the opening of business on such
Payment Date, an amount equal to the Contract Adjustment Payments payable on
such Payment Date with respect to such Purchase Contracts; provided that no
payment is required if the Company has elected to defer the Contract Adjustment
Payments which would otherwise be payable on the Payment Date. Except as
provided in the immediately preceding sentence and subject to the second to last
paragraph of Section 5.2, no payment or adjustment shall be made upon Early
Settlement of any Purchase Contract on account of any Contract Adjustment
Payments accrued on such Purchase Contract or on account of any dividends on the
Common Stock issued upon such Early Settlement. In order for any of the
foregoing requirements to be considered satisfied or effective with respect to a
Purchase Contract underlying any Security on or by a particular Business Day,
such requirement must be met at or prior to 5:00 p.m., New York City time, on
such Business Day; the first Business Day on which all of the foregoing
requirements have been satisfied by 5:00 p.m., New York City time shall be the
"Early Settlement Date" with respect to such Security.

         (ii)     Upon Early Settlement of Purchase Contracts by a Holder of the
related Securities, the Company shall issue, and the Holder shall be entitled to
receive 0.7396 newly issued shares of Common Stock per Income PRIDES or Growth
PRIDES (the "Early Settlement Rate") (regardless of the market price of the
Common Stock on the date of Early Settlement); provided, however, that upon the
Early Settlement of the Purchase Contracts, the Holder of such related
Securities will forfeit the right to receive any Deferred Contract Adjustment
Payments. The Early Settlement Rate shall be adjusted in the same manner and at
the same time as the

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Settlement Rate is adjusted, in accordance with Section 5.6. As promptly as
practicable after Early Settlement of Purchase Contracts in accordance with the
provisions of this Section 5.9, the Company shall issue and shall deliver to the
Agent at the Corporate Trust Office a certificate or certificates for the full
number of shares of Common Stock issuable upon such Early Settlement together
with payment in lieu of any fraction of a share, as provided in Section 5.10.

         (iii)    No later than the third Business Day after the applicable
Early Settlement Date the Company shall cause (i) the shares of Common Stock
issuable upon Early Settlement of Purchase Contracts to be issued and delivered,
and (ii) the related Debt Securities or the Applicable Ownership Interest in the
appropriate Treasury Portfolio, in the case of Income PRIDES, or the related
Treasury Securities, in the case of Growth PRIDES, to be released from the
Pledge by the Collateral Agent and transferred, in each case to the Agent for
delivery to the Holder thereof or its designee.

         (iv)     Upon Early Settlement of any Purchase Contracts, and subject
to receipt of shares of Common Stock from the Company and the Debt Securities,
the Applicable Ownership Interest in the appropriate Treasury Portfolio or
Treasury Securities, as the case may be, from the Collateral Agent, as
applicable, the Agent shall, in accordance with the instructions provided by the
Holder thereof on the applicable form of Election to Settle Early in the
Certificate evidencing the related Securities, (i) transfer to the Holder the
Debt Securities, Treasury Portfolio or Treasury Securities, as the case may be,
forming a part of such Securities, and (ii) deliver to the Holder a certificate
or certificates for the full number of shares of Common Stock issuable upon such
Early Settlement together with payment in lieu of any fraction of a share, as
provided in Section 5.10.

         (v)      In the event that Early Settlement is effected with respect to
Purchase Contracts underlying less than all the Securities evidenced by a
Certificate, upon such Early Settlement the Company shall execute and the Agent
shall authenticate, countersign and deliver to the Holder thereof, at the
expense of the Company, a Certificate evidencing the Securities as to which
Early Settlement was not effected.

         (b)      Cash Merger.

         (i)      If, prior to the Purchase Contract Settlement Date, (i) the
Company merges with or into another entity, (ii) the Common Stock is converted,
exchanged, reclassified or cancelled in such merger, and (iii) at least 30% of
the consideration received by the Company's shareholders for its Common Stock in
such merger consists of cash or cash equivalents (a "Cash Merger"), then each
Holder of Securities shall have the right to settle the Purchase Contract at the
Settlement Rate in effect immediately before the Cash Merger (a "Cash Merger
Early Settlement"). The right to Cash Merger Early Settlement is subject to
there being in effect, if so required under Federal securities laws, a
registration statement covering the securities to be delivered in respect of the
Purchase Contracts being settled (it being understood that, if so required under
Federal securities laws, the Company shall use commercially reasonable efforts
to (1) cause such a registration statement to become effective and (2) provide a
prospectus in connection therewith, in each case, in a form appropriate for
Early Settlements). Upon Cash Merger Early Settlement, (i) the holder's rights
to receive Deferred Contract Adjustment Payments, if any, on the Purchase
Contracts being settled will be forfeited, (ii) the holder's right

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<PAGE>

to receive additional Contract Adjustment Payments in respect of such Purchase
Contracts will terminate and (iii) no adjustment will be made to or for the
holder on account of Deferred Contract Adjustment Payments, or any amount
accrued in respect of Contract Adjustment Payments. The Company shall provide
each of the Holders with a notice of the consummation of the Cash Merger within
five Business Days after the consummation thereof. Such notice will specify,
among other things, the "Cash Merger Early Settlement Date," which shall be 10
Business Days after the date of such notice, and the amount of the cash,
securities and other consideration receivable by each Holder upon a Cash Merger
Early Settlement.

         (ii)     To exercise a Cash Merger Early Settlement, a Holder shall
deliver, present and surrender the Certificates evidencing such Securities as
shall be settled at the offices of the Agent, accompanied by payment to the
Company in immediately available funds of an amount equal to (1) $25 multiplied
by (2) the number of Purchase Contracts being settled, plus (3) if such delivery
is made with respect to any Purchase Contracts during the period from the close
of business on any Record Date next preceding any Payment Date to the opening of
business on such Payment Date, an amount equal to the Contract Adjustment
Payments payable on such Payment Date with respect to such Purchase Contracts;
provided that no payment is required if the Company has elected to defer the
Contract Adjustment Payments which would otherwise be payable on the Payment
Date, no later than 5:00 p.m., New York City time, on the Business Day
immediately preceding the Cash Merger Early Settlement Date. Except as provided
in the immediately preceding sentence and subject to the second to last
paragraph of Section 5.2, no payment or adjustment shall be made upon Cash
Merger Early Settlement of any Purchase Contract on account of any Contract
Adjustment Payments accrued on such Purchase Contract or on account of any
dividends on the Common Stock issued upon such Cash Merger Early Settlement.

         (iii)    Upon a Cash Merger Early Settlement, the Company will deliver,
or cause to be delivered, to Holders duly exercising a Cash Merger Early
Settlement on the Cash Merger Early Settlement Date the kind and amount of
securities, cash or other property that such Holders would have been entitled to
receive if they had settled the Purchase Contracts immediately before the Cash
Merger at the Settlement Rate in effect at such time.

         (iv)     No later than the third Business Day after the applicable Cash
Merger Early Settlement Date the Company shall cause (i) the shares of Common
Stock issuable upon Cash Merger Early Settlement of Purchase Contracts to be
issued and delivered, and (ii) the related Debt Securities or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, in the case of Income
PRIDES, or the related Treasury Securities, in the case of Growth PRIDES, to be
released from the Pledge by the Collateral Agent and transferred, in each case
to the Agent for delivery to the Holder thereof or its designee.

         (v)      In the event that Cash Merger Early Settlement is effected
with respect to Purchase Contracts underlying less than all the Securities
evidenced by a Certificate, upon such Cash Merger Early Settlement the Company
shall execute and the Agent shall authenticate, countersign and deliver to the
Holder thereof, at the expense of the Company, a Certificate evidencing the
Securities as to which Early Settlement was not effected.

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SECTION 5.10      NO FRACTIONAL SHARES.

         No fractional shares or scrip representing fractional shares of Common
Stock shall be issued or delivered upon settlement on the Purchase Contract
Settlement Date or upon Early Settlement or Cash Merger Early Settlement of any
Purchase Contracts. If Certificates evidencing more than one Purchase Contract
shall be surrendered for settlement at one time by the same Holder, the number
of full shares of Common Stock which shall be delivered upon settlement shall be
computed on the basis of the aggregate number of Purchase Contracts evidenced by
the Certificates so surrendered. Instead of any fractional share of Common Stock
which would otherwise be deliverable upon settlement of any Purchase Contracts
on the Purchase Contract Settlement Date or upon Early Settlement or Cash Merger
Early Settlement, the Company, through the Agent, shall make a cash payment in
respect of such fractional interest in an amount equal to the fractional share
times (i) the Threshold Appreciation Price, in the case of an Early Settlement
or (ii) the Applicable Market Value, in all other circumstances. The Company
shall provide the Agent from time to time with sufficient funds to permit the
Agent to make all cash payments required by this Section 5.10 in a timely
manner.

SECTION 5.11      CHARGES AND TAXES.

         The Company will pay all stock transfer and similar taxes attributable
to the initial issuance and delivery of the shares of Common Stock pursuant to
the Purchase Contracts and in payment of any Deferred Contract Adjustment
Payments; provided, however, that the Company shall not be required to pay any
such tax or taxes which may be payable in respect of any exchange of or
substitution for a Certificate evidencing a Security or any issuance of a share
of Common Stock in a name other than that of the registered Holder of a
Certificate surrendered in respect of the Securities evidenced thereby, other
than in the name of the Agent, as custodian for such Holder, and the Company
shall not be required to issue or deliver such share certificates or
Certificates unless or until the Person or Persons requesting the transfer or
issuance thereof shall have paid to the Company the amount of such tax or shall
have established to the satisfaction of the Company that such tax has been paid
or that no such tax is due.

                                   ARTICLE VI

                                    REMEDIES

SECTION 6.1       UNCONDITIONAL RIGHT OF HOLDERS TO RECEIVE CONTRACT ADJUSTMENT
                  PAYMENTS AND TO PURCHASE COMMON STOCK.

         The Holder of any Income PRIDES or Growth PRIDES shall have the right,
which is absolute and unconditional (subject to the right of the Company to
defer payment thereof pursuant to Section 5.3, the prepayment of Contract
Adjustment Payments pursuant to Section 5.9 and the forfeiture of any Deferred
Contract Adjustment Payments upon Early Settlement or Cash Merger Early
Settlement pursuant to Section 5.9 or upon the occurrence of a Termination
Event), to receive payment of each installment of the Contract Adjustment
Payments with respect to the Purchase Contract constituting a part of such
Security on the respective Payment Date for such Security and to purchase Common
Stock pursuant to such Purchase Contract and,

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<PAGE>

in each such case, to institute suit for the enforcement of any such payment and
right to purchase Common Stock, and such rights shall not be impaired without
the consent of such Holder.

SECTION 6.2       RESTORATION OF RIGHTS AND REMEDIES.

         If any Holder has instituted any proceeding to enforce any right or
remedy under this Agreement and such proceeding has been discontinued or
abandoned for any reason, or has been determined adversely to such Holder, then
and in every such case, subject to any determination in such proceeding, the
Company and such Holder shall be restored severally and respectively to their
former positions hereunder and thereafter all rights and remedies of such Holder
shall continue as though no such proceeding had been instituted.

SECTION 6.3       RIGHTS AND REMEDIES CUMULATIVE.

         Except as otherwise provided with respect to the replacement or payment
of mutilated, destroyed, lost or stolen Certificates in the last paragraph of
Section 3.10, no right or remedy herein conferred upon or reserved to the
Holders is intended to be exclusive of any other right or remedy, and every
right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

SECTION 6.4       DELAY OR OMISSION NOT WAIVER.

         No delay or omission of any Holder to exercise any right or remedy upon
a default shall impair any such right or remedy or constitute a waiver of any
such right. Every right and remedy given by this Article or by law to the
Holders may be exercised from time to time, and as often as may be deemed
expedient, by such Holders.

SECTION 6.5       UNDERTAKING FOR COSTS.

         All parties to this Agreement agree, and each Holder of Income PRIDES
or Growth PRIDES, by its acceptance of such Income PRIDES or Growth PRIDES shall
be deemed to have agreed, that any court may in its discretion require, in any
suit for the enforcement of any right or remedy under this Agreement, or in any
suit against the Agent for any action taken, suffered or omitted by it as Agent,
the filing by any party litigant in such suit of an undertaking to pay the costs
of such suit, and that such court may in its discretion assess reasonable costs,
including reasonable attorneys' fees, against any party litigant in such suit,
having due regard to the merits and good faith of the claims or defenses made by
such party litigant; provided that the provisions of this Section shall not
apply to any suit instituted by the Company, to any suit instituted by the
Agent, to any suit instituted by any Holder, or group of Holders, holding in the
aggregate more than 10% of the Outstanding Securities, or to any suit instituted
by any Holder for the enforcement of payment of interest on any Debt Securities
or Contract Adjustment Payments on any Purchase Contract on or after the
respective Payment Date therefor in respect of any Security held by such Holder,
or for enforcement of the right to purchase shares of Common Stock under the
Purchase Contracts constituting part of any Security held by such Holder.

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<PAGE>

SECTION 6.6       WAIVER OF STAY OR EXTENSION LAWS.

         The Company covenants (to the extent that it may lawfully do so) that
it will not at any time insist upon, or plead, or in any manner whatsoever claim
or take the benefit or advantage of, any stay or extension law wherever enacted,
now or at any time hereafter in force, which may affect the covenants or the
performance of this Agreement; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such law
and covenants that it will not hinder, delay or impede the execution of any
power herein granted to the Agent or the Holders, but will suffer and permit the
execution of every such power as though no such law had been enacted.

                                   ARTICLE VII

                                    THE AGENT

SECTION 7.1       CERTAIN DUTIES AND RESPONSIBILITIES.

         (a)      Prior to a Default and after the curing or waiving of all such
Defaults that may have occurred,

         (1)      the Agent undertakes to perform, with respect to the
Securities, such duties and only such duties as are specifically set forth in
this Agreement and no implied covenants or obligations shall be read into this
Agreement against the Agent; and

         (2)      the Agent may, with respect to the Securities, conclusively
rely, as to the truth of the statements and the correctness of the opinions
expressed therein, in the absence of bad faith, gross negligence or willful
misconduct on the part of the Agent, upon certificates or opinions furnished to
the Agent and conforming to the requirements of this Agreement; but in the case
of any certificates or opinions which by any provision hereof are specifically
required to be furnished to the Agent, the Agent shall be under a duty to
examine the same to determine whether or not they conform to the requirements of
this Agreement.

         (b)      No provision of this Agreement shall be construed to relieve
the Agent from liability for its own grossly negligent action, its own grossly
negligent failure to act, or its own willful misconduct, except that

         (1)      this Subsection shall not be construed to limit the effect of
Subsection (a) of this Section;

         (2)      the Agent shall not be liable for any error of judgment made
in good faith by a Responsible Officer, unless it shall be proved that the Agent
was grossly negligent in ascertaining the pertinent facts; and

         (3)      no provision of this Agreement shall require the Agent to
expend or risk its own funds or otherwise incur any financial liability in the
performance of any of its duties hereunder, or in the exercise of any of its
rights or powers.

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<PAGE>

         (c)      Whether or not therein expressly so provided, every provision
of this Agreement relating to the conduct or affecting the liability of or
affording protection to the Agent shall be subject to the provisions of this
Section.

         (d)      The Agent is authorized to execute, deliver and perform the
Pledge Agreement in its capacity as Agent and to grant the Pledge. The Agent
shall be entitled to all of the rights, privileges, immunities and indemnities
contained in this Agreement with respect to any duties of the Agent under, or
actions taken by the Agent pursuant to, such Pledge Agreement.

         (e)      In case a Default has occurred (that has not been cured or
waived), and is actually known by a Responsible Officer of the Agent, the Agent
shall exercise such of the rights and powers vested in it by this Agreement, and
use the same degree of care and skill in its exercise thereof, as a prudent
person would exercise or use under the circumstances in the conduct of his or
her own affairs.

         (f)      At the request of the Company, the Agent is authorized to
execute and deliver one or more Remarketing Agreements to, among other things,
effectuate Section 5.4.

SECTION 7.2       NOTICE OF DEFAULT.

         Within 90 days after the occurrence of any Default hereunder of which a
Responsible Officer of the Agent has actual knowledge, the Agent shall transmit
by mail to the Company and the Holders of Securities, as their names and
addresses appear in the Register, notice of such Default hereunder, unless such
Default shall have been cured or waived; provided that, except for a Default in
any payment obligation hereunder, the Agent shall be protected in withholding
such notice if and so long as a Responsible Officer of the Agent in good faith
determines that the withholding of such notice is in the interests of the
Holders of the Securities.

SECTION 7.3       CERTAIN RIGHTS OF AGENT.

         Subject to the provisions of Section 7.1:

         (a)      the Agent may conclusively rely and shall be protected in
acting or refraining from acting upon any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
debenture, note, other evidence of indebtedness or other paper or document
believed by it to be genuine and to have been signed or presented by the proper
party or parties;

         (b)      any request or direction of the Company mentioned herein shall
be sufficiently evidenced by a Company Certificate, Issuer Order or Issuer
Request, and any resolution of the Board of Directors of the Company may be
sufficiently evidenced by a Board Resolution;

         (c)      whenever in the administration of this Agreement the Agent
shall deem it desirable that a matter be proved or established prior to taking,
suffering or omitting any action hereunder, the Agent (unless other evidence be
herein specifically prescribed) may, in the absence of bad faith on its part,
rely upon a Company Certificate;

                                       55

<PAGE>

         (d)      the Agent may consult with counsel of its selection and the
advice of such counsel or any Opinion of Counsel shall be full and complete
authorization and protection in respect of any action taken, suffered or omitted
by it hereunder in good faith and in reliance thereon;

         (e)      the Agent shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
debenture, note, other evidence of indebtedness or other paper or document, but
the Agent, in its discretion, may make reasonable further inquiry or
investigation into such facts or matters related to the execution, delivery and
performance of the Purchase Contracts as it may see fit, and, if the Agent shall
determine to make such further inquiry or investigation, it shall be given a
reasonable opportunity to examine the books, records and premises of the
Company, personally or by agent or attorney;

         (f)      the Agent may execute any of the powers hereunder or perform
any duties hereunder either directly or by or through agents or attorneys or an
Affiliate and the Agent shall not be responsible for any misconduct or
negligence on the part of any agent or attorney or an Affiliate appointed with
due care by it hereunder; and

         (g)      the rights, privileges, protections, immunities and benefits
given to the Agent, including, without limitation, its right to be indemnified,
are extended to, and shall be enforceable by, the Agent in each of its
capacities hereunder.

SECTION 7.4       NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES.

         The recitals contained herein and in the Certificates shall be taken as
the statements of the Company, and the Agent assumes no responsibility for their
accuracy. The Agent makes no representations as to the validity or sufficiency
of either this Agreement or of the Securities, or of the Pledge Agreement or the
Pledge. The Agent shall not be accountable for the use or application by the
Company of the proceeds in respect of the Purchase Contracts.

SECTION 7.5       MAY HOLD SECURITIES.

         Any Registrar or any other agent of the Company, or the Agent and its
Affiliates, in their individual or any other capacity, may become the owner or
pledgee of Securities and may otherwise deal with the Company, the Collateral
Agent or any other Person with the same rights it would have if it were not
Registrar or such other agent, or the Agent.

SECTION 7.6       MONEY HELD IN CUSTODY.

         Money held by the Agent in custody hereunder need not be segregated
from the other funds except to the extent required by law or provided herein.
The Agent shall be under no obligation to invest or pay interest on any money
received by it hereunder except as otherwise agreed in writing with the Company.

SECTION 7.7       COMPENSATION AND REIMBURSEMENT.

         The Company agrees:

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<PAGE>

         (a)      to pay to the Agent from time to time such compensation for
all services rendered by it hereunder or in connection herewith as the parties
shall agree from time to time in writing (which compensation shall not be
limited by any provisions of law in regards to the compensation of a trustee of
an express trust);

         (b)      except as otherwise expressly provided herein, to reimburse
the Agent promptly upon its request for all reasonable expenses, disbursements
and advances incurred or made by the Agent in accordance with any provision of
this Agreement or in connection herewith (including the reasonable compensation
and the expenses and disbursements of its agents and counsel), except any such
expense, disbursement or advance as may be attributable to its gross negligence,
willful misconduct or bad faith; and

         (c)      to indemnify the Agent and any predecessor Agent for, and to
hold it harmless against, any loss, liability or expense incurred without gross
negligence, willful misconduct or bad faith on its part, arising out of or in
connection with the acceptance or administration or the performance of its
duties hereunder, including the costs and expenses of defending itself against
any claim or liability in connection with the exercise or performance of any of
its powers or duties hereunder or in connection herewith.

         "Agent" for purposes of this Section 7.7 shall include any predecessor
Agent; provided, however, that the gross negligence, willful misconduct or bad
faith of any Agent hereunder shall not affect the rights of any other Agent
hereunder.

         When the Agent incurs expenses or renders services in an action or
proceeding commenced pursuant to Section 4.3 of the Pledge Agreement upon the
occurrence of a Termination Event, the expenses (including the reasonable
charges and expenses of its counsel) and the compensation for the services are
intended to constitute expenses of administration under any applicable Federal
or State bankruptcy, insolvency or other similar law.

         The provisions of this Section 7.7 shall survive the termination of
this Agreement and the Pledge Agreement.

SECTION 7.8       CORPORATE AGENT REQUIRED; ELIGIBILITY.

         There shall at all times be an Agent hereunder which shall be (i) not
an Affiliate of the Company and (ii) a corporation organized and doing business
under the laws of the United States of America, any State thereof or the
District of Columbia, authorized under such laws to exercise corporate trust
powers, having (or being a member of a bank holding company having) a combined
capital and surplus of at least $50,000,000 and subject to supervision or
examination by Federal or State authority. If such corporation publishes reports
of condition at least annually, pursuant to law or to the requirements of said
supervising or examining authority, then for the purposes of this Section, the
combined capital and surplus of such corporation shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published. If at any time the Agent shall cease to be eligible in accordance
with the provisions of this Section, it shall resign immediately in the manner
and with the effect hereinafter specified in this Article.

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<PAGE>

SECTION 7.9       RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

         (a)      No resignation or removal of the Agent and no appointment of a
successor Agent pursuant to this Article shall become effective until the
acceptance of appointment by the successor Agent in accordance with the
applicable requirements of Section 7.10.

         (b)      The Agent may resign at any time by giving written notice
thereof to the Company 60 days prior to the effective date of such resignation.
If the instrument of acceptance by a successor Agent required by Section 7.10
shall not have been delivered to the Agent within 30 days after the giving of
such notice of resignation, the resigning Agent may petition any court of
competent jurisdiction for the appointment of a successor Agent.

         (c)      The Agent may be removed at any time by Act of the Holders of
a majority in number of the Outstanding Securities delivered to the Agent and
the Company.

         (d)      If at any time

                  (1)      the Agent fails to comply with Section 310(b) of the
         TIA, as if the Agent was an indenture trustee under an indenture
         qualified under the TIA, after written request therefor by the Company
         or by any Holder who has been a bona fide Holder of a Security for at
         least six months, or

                  (2)      the Agent shall cease to be eligible under Section
         7.8 and shall fail to resign after written request therefor by the
         Company or by any such Holder, or

                  (3)      the Agent shall become incapable of acting or shall
         be adjudged a bankrupt or insolvent or a receiver of the Agent or of
         its property shall be appointed or any public officer shall take charge
         or control of the Agent or of its property or affairs for the purpose
         of rehabilitation, conservation or liquidation, then, in any such case,
         (i) the Company by a Board Resolution may remove the Agent, or (ii) any
         Holder who has been a bona fide Holder of a Security for at least six
         months may, on behalf of himself and all others similarly situated,
         petition any court of competent jurisdiction for the removal of the
         Agent and the appointment of a successor Agent.

         (e)      If the Agent shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Agent for any cause, the
Company, by a Board Resolution, shall promptly appoint a successor Agent and
shall comply with the applicable requirements of Section 7.10. If no successor
Agent shall have been so appointed by the Company and accepted appointment in
the manner required by Section 7.10, the Agent or any Holder who has been a bona
fide Holder of a Security for at least six months may, on behalf of himself and
all others similarly situated, petition any court of competent jurisdiction for
the appointment of a successor Agent.

         (f)      The Company shall give, or shall cause such successor Agent to
give, notice of each resignation and each removal of the Agent and each
appointment of a successor Agent by mailing written notice of such event by
first-class mail, postage prepaid, to all Holders as their names and addresses
appear in the applicable Register. Each notice shall include the name of the
successor Agent and the address of its Corporate Trust Office.

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<PAGE>

SECTION 7.10      ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

         (a)      In case of the appointment hereunder of a successor Agent,
every such successor Agent so appointed shall execute, acknowledge and deliver
to the Company and to the retiring Agent an instrument accepting such
appointment, and thereupon the resignation or removal of the retiring Agent
shall become effective and such successor Agent, without any further act, deed
or conveyance, shall become vested with all the rights, powers, agencies and
duties of the retiring Agent; but, on the request of the Company or the
successor Agent, such retiring Agent shall, upon payment of its charges, execute
and deliver an instrument transferring to such successor Agent all the rights,
powers and trusts of the retiring Agent and shall duly assign, transfer and
deliver to such successor Agent all property and money held by such retiring
Agent hereunder.

         (b)      Upon request of any such successor Agent, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Agent all such rights, powers and agencies referred
to in paragraph (a) of this Section.

         (c)      No successor Agent shall accept its appointment unless at the
time of such acceptance such successor Agent shall be qualified and eligible
under this Article.

SECTION 7.11      MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO BUSINESS.

         Any Person into which the Agent may be merged or converted or with
which it may be consolidated, or any Person resulting from any merger,
conversion or consolidation to which the Agent shall be a party, or any Person
succeeding to all or substantially all the corporate trust business of the
Agent, shall be the successor of the Agent hereunder, provided such Person shall
be otherwise qualified and eligible under this Article, without the execution or
filing of any paper or any further act on the part of any of the parties hereto.
In case any Certificates shall have been authenticated and executed on behalf of
the Holders, but not delivered, by the Agent then in office, any successor by
merger, conversion or consolidation to such Agent may adopt such authentication
and execution and deliver the Certificates so authenticated and executed with
the same effect as if such successor Agent had itself authenticated and executed
such Securities.

SECTION 7.12      PRESERVATION OF INFORMATION; COMMUNICATIONS TO HOLDERS.

         (a)      The Agent shall preserve, in as current a form as is
reasonably practicable, the names and addresses of Holders received by the Agent
in its capacity as Registrar.

         (b)      If three or more Holders (herein referred to as "applicants")
apply in writing to the Agent, and furnish to the Agent reasonable proof that
each such applicant has owned a Security for a period of at least six months
preceding the date of such application, and such application states that the
applicants desire to communicate with other Holders with respect to their rights
under this Agreement or under the Securities and is accompanied by a copy of the
form of proxy or other communication which such applicants propose to transmit,
then the Agent shall mail to all the Holders copies of the form of proxy or
other communication which is specified in such

                                       59

<PAGE>

request, with reasonable promptness after a tender to the Agent of the materials
to be mailed and of payment, or provision for the payment, of the reasonable
expenses of such mailing.

SECTION 7.13      NO OBLIGATIONS OF AGENT.

         Except to the extent otherwise provided in this Agreement, the Agent
assumes no obligations and shall not be subject to any liability under this
Agreement, the Pledge Agreement or any Purchase Contract in respect of the
obligations of the Holder of any Security thereunder. The Company agrees, and
each Holder of a Certificate, by his acceptance thereof, shall be deemed to have
agreed, that the Agent's execution of the Certificates on behalf of the Holders
shall be solely as agent and attorney-in-fact for the Holders, and that the
Agent shall have no obligation to perform such Purchase Contracts on behalf of
the Holders, except to the extent expressly provided in Article V hereof.

SECTION 7.14      TAX COMPLIANCE.

         (a)      The Agent, on its own behalf and on behalf of the Company,
will comply with all applicable certification, information reporting and
withholding (including "backup" withholding) requirements imposed by applicable
tax laws, regulations or administrative practice with respect to (i) any
payments made with respect to the Securities or (ii) the issuance, delivery,
holding, transfer, redemption or exercise of rights under the Securities. Such
compliance shall include, without limitation, the preparation and timely filing
of required returns and the timely payment of all amounts required to be
withheld to the appropriate taxing authority or its designated agent.

         (b)      The Agent shall comply with any written direction received
from the Company with respect to the application of such requirements to
particular payments or Holders or in other particular circumstances, and may for
purposes of this Agreement conclusively rely on any such direction in accordance
with the provisions of Section 7.1(a)(2) hereof.

         (c)      The Agent shall maintain all appropriate records documenting
compliance with such requirements, and shall make such records available, on
written request, to the Company or its authorized representative within a
reasonable period of time after receipt of such request.

                                  ARTICLE VIII

                             SUPPLEMENTAL AGREEMENTS

SECTION 8.1       SUPPLEMENTAL AGREEMENTS WITHOUT CONSENT OF HOLDERS.

         Without the consent of any Holders, the Company and the Agent, at any
time and from time to time, may enter into one or more agreements supplemental
hereto, in form satisfactory to the Company and the Agent, for any of the
following purposes:

         (a)      to evidence the succession of another Person to the Company,
and the assumption by any such successor of the covenants of the Company herein
and in the Certificates; 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;
or

                                       60

<PAGE>

         (c)      to evidence and provide for the acceptance of appointment
hereunder by a successor Agent; or

         (d)      to make provision with respect to the rights of Holders
pursuant to the requirements of Section 5.6(b); or

         (e)      to cure any ambiguity, to correct or supplement any provisions
herein which may be inconsistent with any other 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 8.2       SUPPLEMENTAL AGREEMENTS WITH CONSENT OF HOLDERS.

         With the consent of the Holders of not less than a majority of the
outstanding Purchase Contracts voting together as one class, by Act of said
Holders delivered to the Company and the Agent, the Company, when authorized by
a Board Resolution, and the Agent may enter into an agreement or agreements
supplemental hereto for the purpose of modifying in any manner the terms of the
Purchase Contracts, or the provisions of this Agreement or the rights of the
Holders in respect of the Securities; provided, however, that, except as
contemplated herein, no such supplemental agreement shall, without the consent
of the Holder of each Outstanding Security affected thereby,

         (a)      change any Payment Date;

         (b)      change the amount or the type of Collateral required to be
Pledged to secure a Holder's Obligations under the Purchase Contract, impair the
right of the Holder of any Purchase Contract to receive distributions on the
related Collateral (except for the rights of Holders of Income PRIDES to
substitute the Treasury Securities for the Pledged Debt Securities or the
Applicable Ownership Interest in a Treasury Portfolio or the rights of holders
of Growth PRIDES to substitute Debt Securities or the Applicable Ownership
Interest in a Treasury Portfolio for the Pledged Treasury Securities) or
otherwise adversely affect the Holder's rights in or to such Collateral or
adversely alter the rights in or to such Collateral;

         (c)      reduce any Contract Adjustment Payments or any Deferred
Contract Adjustment Payment, or change any place where, or the coin or currency
in which, any Contract Adjustment Payment is payable;

         (d)      impair the right to institute suit for the enforcement of any
Purchase Contract;

         (e)      reduce the number of shares of Common Stock to be purchased
pursuant to any Purchase Contract, increase the price to purchase shares of
Common Stock upon settlement of any Purchase Contract, change the Purchase
Contract Settlement Date or the right to Early Settlement or Cash Merger Early
Settlement or otherwise adversely affect the Holder's rights under any Purchase
Contract; or

         (f)      reduce the percentage of the outstanding Purchase Contracts
the consent of whose Holders is required for any such supplemental agreement;

                                       61

<PAGE>

         provided, that if any amendment or proposal referred to above would
adversely affect only the Income PRIDES or the Growth PRIDES, then only the
Holders of the affected class of Security as of the record date for the Holders
entitled to vote thereon will be entitled to vote on or consent to such
amendment or proposal, and such amendment or proposal shall not be effective
except with the consent of Holders of not less than a majority of such class;
provided further, however, that no such agreement, whether with or without the
consent of the Holders, shall affect Section 3.16 hereof.

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

SECTION 8.3       EXECUTION OF SUPPLEMENTAL AGREEMENTS.

         In executing, or accepting the additional agencies created by, any
supplemental agreement permitted by this Article or the modifications thereby of
the agencies created by this Agreement, the Agent shall be entitled to receive
and (subject to Section 7.1) shall be fully protected in relying upon, an
Opinion of Counsel stating that the execution of such supplemental agreement is
authorized or permitted by this Agreement. The Agent may, but shall not be
obligated to, enter into any such supplemental agreement which affects the
Agent's own rights, duties or immunities under this Agreement or otherwise.

SECTION 8.4       EFFECT OF SUPPLEMENTAL AGREEMENTS.

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

SECTION 8.5       REFERENCE TO SUPPLEMENTAL AGREEMENTS.

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

                                   ARTICLE IX

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE

SECTION 9.1       COVENANT NOT TO MERGE, CONSOLIDATE, SELL OR CONVEY PROPERTY
                  EXCEPT UNDER CERTAIN CONDITIONS.

         The Company covenants that it will not merge or consolidate with or
into any other Person or sell, assign, transfer, lease or convey all or
substantially all of its properties and assets

                                       62

<PAGE>

to any Person or group of affiliated Persons in one transaction or a series of
related transactions, unless (i) either the Company shall be the continuing
entity, or the successor (if other than the Company) shall be a Person, other
than an individual, organized and existing under the laws of the United States
of America or a State thereof or the District of Columbia and such entity shall
expressly assume all the obligations of the Company under the Purchase
Contracts, the Debt Securities, this Agreement and the Pledge Agreement by one
or more supplemental agreements in form reasonably satisfactory to the Agent and
the Collateral Agent, executed and delivered to the Agent and the Collateral
Agent by such Person, and (ii) the Company or such successor entity, as the case
may be, shall not, immediately after such merger or consolidation, or such sale,
assignment, transfer, lease or conveyance, be in default in its payment
obligations or in any material default in the performance of any of its other
obligations hereunder, or under any of the Securities or the Pledge Agreement.

SECTION 9.2       RIGHTS AND DUTIES OF SUCCESSOR ENTITY.

         In case of any such consolidation, merger, sale, assignment, transfer,
lease or conveyance and upon any such assumption by a successor entity in
accordance with Section 9.1, such successor entity shall succeed to and be
substituted for the Company with the same effect as if it had been named herein
as the Company. Such successor entity thereupon may cause to be signed, and may
issue either in its own name or in the name of AmerUs Group Co. any or all of
the Certificates evidencing Securities issuable hereunder which theretofore
shall not have been signed by the Company and delivered to the Agent; and, upon
the order of such successor corporation, instead of the Company, and subject to
all the terms, conditions and limitations in this Agreement prescribed, the
Agent shall authenticate and execute on behalf of the Holders and deliver any
Certificates which previously shall have been signed and delivered by the
officers of the Company to the Agent for authentication and execution, and any
Certificate evidencing Securities which such successor entity thereafter shall
cause to be signed and delivered to the Agent for that purpose. All the
Certificates so issued shall in all respects have the same legal rank and
benefit under this Agreement as the Certificates theretofore or thereafter
issued in accordance with the terms of this Agreement as though all of such
Certificates had been issued at the date of the execution hereof.

         In case of any such consolidation, merger, sale, assignment, transfer,
lease or conveyance such change in phraseology and form (but not in substance)
may be made in the Certificates evidencing Securities thereafter to be issued as
may be appropriate.

SECTION 9.3       OPINION OF COUNSEL GIVEN TO AGENT.

         The Agent, subject to Sections 7.1 and 7.3, shall receive an Opinion of
Counsel as conclusive evidence that any such consolidation, merger, sale,
assignment, transfer, lease or conveyance, and any such assumption, complies
with the provisions of this Article and that all conditions precedent to the
consummation of any such consolidation, merger, sale, assignment, transfer,
lease or conveyance have been met.

                                       63

<PAGE>

                                    ARTICLE X

                                    COVENANTS

SECTION 10.1      PERFORMANCE UNDER PURCHASE CONTRACTS.

         The Company covenants and agrees for the benefit of the Holders from
time to time of the Securities that it will duly and punctually perform its
obligations under the Purchase Contracts in accordance with the terms of the
Purchase Contracts and this Agreement.

SECTION 10.2      MAINTENANCE OF OFFICE OR AGENCY.

         The Company will maintain in the Borough of Manhattan, The City of New
York an office or agency where Certificates may be presented or surrendered for
acquisition of shares of Common Stock upon settlement of the Purchase Contracts
on the Purchase Contract Settlement Date or Early Settlement or Cash Merger
Early Settlement and for transfer of Collateral upon occurrence of a Termination
Event, where Certificates may be surrendered for registration of transfer or
exchange, for a Collateral Substitution or establishment of an Income PRIDES and
where notices and demands to or upon the Company in respect of the Securities
and this Agreement may be served. The Company will give prompt written notice to
the Agent of the location, and any change in the location, of such office or
agency. If at any time the Company shall fail to maintain any such required
office or agency or shall fail to furnish the Agent with the address thereof,
such presentations, surrenders, notices and demands may be made or served at the
Corporate Trust Office, and the Company hereby appoints the Agent as its agent
to receive all such presentations, surrenders, notices and demands.

         The Company may also from time to time designate one or more other
offices or agencies where Certificates may be presented or surrendered for any
or all such purposes and may from time to time rescind such designations;
provided, however, that no such designation or rescission shall in any manner
relieve the Company of its obligation to maintain an office or agency in the
Borough of Manhattan, The City of New York for such purposes. The Company will
give prompt written notice to the Agent of any such designation or rescission
and of any change in the location of any such other office or agency. The
Company hereby designates as the place of payment for the Securities the Paying
Office and appoints the Agent at its Paying Office as paying agent in such city.

SECTION 10.3      COMPANY TO RESERVE COMMON STOCK.

         The Company shall at all times prior to the Purchase Contract
Settlement Date reserve and keep available, free from preemptive rights, out of
its authorized but unissued Common Stock the full number of shares of Common
Stock issuable against tender of payment in respect of all Purchase Contracts
constituting a part of the Securities evidenced by Outstanding Certificates.

                                       64

<PAGE>

SECTION 10.4      COVENANTS AS TO COMMON STOCK.

         The Company covenants that all shares of Common Stock which may be
issued against tender of payment in respect of any Purchase Contract
constituting a part of the Outstanding Securities will, upon issuance, be duly
authorized, validly issued, fully paid and nonassessable.

                                       65

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Purchase
Contract Agreement to be duly executed as of the day and year first above
written.

                                        AMERUS GROUP CO.

                                        By: /s/ Roger K. Brooks
                                           ------------------------------------
                                          Name: Roger K. Brooks
                                         Title: Chairman, President and
                                                Chief Executive Officer

                                        WACHOVIA BANK, NATIONAL ASSOCIATION,
                                        as Purchase Contract Agent and Trustee

                                        By: /s/ Shawn K. Bednasek
                                           -------------------------------------
                                          Name: Shawn K. Bednasek
                                         Title: Vice President

                                       66

<PAGE>

                                    EXHIBIT A

                        FORM OF INCOME PRIDES CERTIFICATE

         THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE
PURCHASE CONTRACT AGREEMENT (AS HEREINAFTER DEFINED) AND IS REGISTERED IN THE
NAME OF THE CLEARING AGENCY OR A NOMINEE THEREOF. THIS CERTIFICATE MAY NOT BE
EXCHANGED IN WHOLE OR IN PART FOR A CERTIFICATE REGISTERED, AND NO TRANSFER OF
THIS CERTIFICATE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY
PERSON OTHER THAN SUCH CLEARING AGENCY OR A NOMINEE THEREOF, EXCEPT IN THE
LIMITED CIRCUMSTANCES DESCRIBED IN THE PURCHASE CONTRACT AGREEMENT.

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE
COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME
AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY,
AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

No. 1                                                         Cusip No.03072M405
Number of Income PRIDES 5,000,000

                                AMERUS GROUP CO.

                               6.25% Income PRIDES

                               ($25 Stated Amount)

         This Income PRIDES Certificate certifies that Cede & Co. is the
registered Holder of the number of Income PRIDES set forth above. Each Income
PRIDES represents (a) a stock purchase contract of AmerUs Group Co., an Iowa
corporation (the "Company") (as modified and supplemented and in effect from
time to time, a "Purchase Contract") and (b) beneficial ownership of either (A)
(i) beneficial ownership of a Senior Note initially due May 2008 of the Company
("Debt Security"), having a principal amount of $25 or (ii) on or after the
Reset Date, an Applicable Ownership Interest in the Remarketing Treasury
Portfolio, subject to the Pledge of such Debt Security or Applicable Ownership
Interest in the Remarketing Treasury Portfolio by the Holder pursuant to the
Pledge Agreement or (B) on or after the occurrence of a Tax Event Redemption
prior to the Purchase Contract Settlement Date, an Applicable Ownership Interest
in the Tax Event Treasury Portfolio, subject to the Pledge of such Applicable
Ownership Interest in the Tax Event Treasury Portfolio by the Holder pursuant to
the Pledge Agreement. All capitalized terms used herein without definition
herein shall have the meaning set forth in the Purchase Contract Agreement
referred to below.

                                       A-1

<PAGE>

         Pursuant to the Pledge Agreement, the Debt Securities or the
appropriate Applicable Ownership Interest in the Treasury Portfolio, as the case
may be, constituting part of each Income PRIDES evidenced hereby have been
pledged to the Collateral Agent, for the benefit of the Company, to secure the
obligations of the Holder under the Purchase Contract comprising a portion of
such Income PRIDES.

         The Pledge Agreement provides that all payments of the principal amount
of Pledged Debt Securities or the Stated Amount of the Pledged Applicable
Ownership Interest (as specified in clause (1) of the definition of such term)
in the appropriate Treasury Portfolio, as the case may be, or payments of
interest on any Pledged Debt Securities or the Pledged Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, constituting
part of the Income PRIDES received by the Collateral Agent shall be paid by the
Collateral Agent by wire transfer in same day funds (i) in the case of (A)
payments of interest with respect to Pledged Debt Securities or cash
distributions on the Pledged Applicable Ownership Interest (as specified in
clauses (1)(ii), (1)(iii) or (2)(ii) of the definition of such term) in the
appropriate Treasury Portfolio, as the case may be, and (B) any payments of the
principal amount of Pledged Debt Securities or the Stated Amount of the Pledged
Applicable Ownership Interest (as specified in clauses (1)(i) or (2)(i) of the
definition of such term) in the appropriate Treasury Portfolio, as the case may
be, with respect to any Debt Securities or the Applicable Ownership Interest in
the appropriate Treasury Portfolio, as the case may be, that have been released
from the Pledge pursuant to the Pledge Agreement, to the Agent to the account
designated by the Agent, 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 (ii) in the case of payments of the principal
amount of Debt Securities or the Applicable Ownership Interest (as specified in
clauses (1)(i) or (2)(i) of the definition of such term) in the appropriate
Treasury Portfolio, as the case may be, to the Company on the Purchase Contract
Settlement Date (as defined herein) in accordance with the terms of the Pledge
Agreement, in full satisfaction of the respective obligations of the Holders of
the Income PRIDES of which such Pledged Debt Securities or the Pledged
Applicable Ownership Interest in the appropriate Treasury Portfolio, as the case
may be, are a part under the Purchase Contracts forming a part of such Income
PRIDES. Payment of interest on any Pledged Debt Securities or cash distribution
on the Pledged Applicable Ownership Interest (as specified in clauses (1)(ii),
1(iii) or (2)(ii) of the definition of such term) in the appropriate Treasury
Portfolio, as the case may be, forming part of an Income PRIDES evidenced hereby
which are payable quarterly in arrears on February 16, May 16, August 16 and
November 16 of each year, commencing August 16, 2003 (each a "Payment Date"),
shall, subject to receipt thereof by the Agent from the Collateral Agent, be
paid to the Person in whose name this Income PRIDES Certificate (or a
Predecessor Income PRIDES Certificate) is registered at the close of business on
the Record Date for such Payment Date. If the Debt Securities are successfully
remarketed pursuant to the Remarketing Agreement and the Reset Date is not a
Payment Date, any interest paid with respect to the Pledged Debt Securities on
such Reset Date shall be received by the Collateral Agent and held in a
non-interest bearing account, until payment to the Agent for the benefit of
Holders is made on the Payment Date next following such Reset Date.

                                       A-2

<PAGE>

         Each Purchase Contract evidenced hereby obligates the Holder of this
Income PRIDES Certificate to purchase, and the Company to sell, not later than
August 16, 2006 (the "Purchase Contract Settlement Date"), at a price of $25 in
cash (the "Purchase Price"), a number of newly-issued shares of Common Stock,
without par value including, where applicable, the preference stock purchase
rights appurtenant thereto ("Common Stock"), of the Company equal to the
applicable Settlement Rate (as defined below), unless on or prior to the
Purchase Contract Settlement Date there shall have occurred a Termination Event
or an Early Settlement or Cash Merger Early Settlement with respect to the
Income PRIDES of which such Purchase Contract is a part, all as provided in the
Purchase Contract Agreement and more fully described on the herein.

         The "Settlement Rate" is equal to (a) if the Applicable Market Value
(as defined below) is equal to or greater than $33.80 (the "Threshold
Appreciation Price"), a number of shares per Purchase Contract equal to the
product of (i) the Stated Amount divided by the Reference Price, multiplied by
(ii) one minus a fraction, the numerator of which is $7.80 and the denominator
of which is the Applicable Market Value, (b) if the Applicable Market Value is
less than the Threshold Appreciation Price, but is greater than $26.00 (the
"Reference Price"), the number of shares of Common Stock per Purchase Contract
equal to $25 divided by the Applicable Market Value and (c) if the Applicable
Market Value is less than or equal to the Reference Price, 0.9615 shares of
Common Stock per Purchase Contract, in each case subject to adjustment as
provided in the Purchase Contract Agreement (and in each case rounded upward or
downward to the nearest 1/10,000th of a share). No fractional shares of Common
Stock will be issued upon settlement of Purchase Contracts, as provided in the
Purchase Contract Agreement.

         The Company shall pay, on each Payment Date in respect of each Purchase
Contract forming part of an Income PRIDES evidenced hereby, an amount (the
"Contract Adjustment Payments") equal to 0.75% per annum of the Stated Amount;
computed on the basis of a 360-day year of twelve 30-day months, subject to
deferral at the option of the Company as provided in the Purchase Contract
Agreement and more fully described herein. Such Contract Adjustment Payments
shall be payable to the Person in whose name this Income PRIDES Certificate (or
a Predecessor Income PRIDES Certificate or a Predecessor Growth PRIDES
Certificate) is registered on the Register at the close of business on the
Record Date for such Payment Date.

         Contract Adjustment Payments will be payable at the Paying Office or,
at the option of the Company, by check mailed to the address of the Person
entitled thereto at such Person's address as it appears on the Income PRIDES
Register or by wire transfer to an account appropriately designated in writing
by the Person entitled to payment.

         Unless the context otherwise requires, each provision of this Security
shall be part of the Purchase Contracts evidenced hereby. This Security and each
Purchase Contract evidenced hereby is governed by a Purchase Contract Agreement,
dated as of May 28, 2003 (as may be supplemented from time to time, the
"Purchase Contract Agreement"), between the Company and Wachovia Bank, National
Association, as purchase contract agent (including any successor thereunder,
herein called the "Agent"), to which Purchase Contract Agreement and
supplemental agreements thereto reference is hereby made for a description of
the respective rights, limitations of rights, obligations, duties and immunities
thereunder of the Agent, the Company, and the

                                       A-3

<PAGE>

Holders and of the terms upon which the Income PRIDES Certificates are, and are
to be, executed and delivered.

         Each Purchase Contract evidenced hereby, which is settled either
through Early Settlement, Cash Merger Early Settlement or Cash Settlement, shall
obligate the Holder of the related Income PRIDES to purchase at the applicable
Purchase Price, and the Company to sell, a number of newly issued shares of
Common Stock equal to the Early Settlement Rate or the applicable Settlement
Rate, as the case may be.

         The "Applicable Market Value" means the average of the Closing Price
per share of Common Stock on each of the 20 consecutive Trading Days ending on
the third Trading Day immediately preceding the Purchase Contract Settlement
Date or, in the event of a Cash Merger, ending on the third Business Day
immediately preceding the consummation of the Cash Merger. The "Closing Price"
of the Common Stock on any date of determination means the closing sale price
(or, if no closing price is reported, the last reported sale price) of the
Common Stock on the New York Stock Exchange (the "NYSE") on such date or, if the
Common Stock is not listed for trading on the NYSE on any such date, as reported
in the composite transactions for the principal United States national or
regional securities exchange on which the Common Stock is so listed. If the
Common Stock is not so listed on a United States national or regional securities
exchange, the Closing Price means the last sale price of the Common Stock as
reported by the NASDAQ Stock Market, or if the Common Stock is not so reported,
the last quoted bid price for the Common Stock in the over-the-counter market as
reported by the National Quotation Bureau or similar organization. If such bid
price is not available, the Closing Price means market value of the Common Stock
on such date as determined by a nationally recognized independent investment
banking firm retained by the Company for this purpose. A "Trading Day" means a
day on which the Common Stock (A) is not suspended from trading on any national
or regional securities exchange or association or over-the-counter market at the
close of business and (B) has traded at least once on the national or regional
securities exchange or association or over-the-counter market that is the
primary market for the trading of the Common Stock.

         In accordance with the terms of the Purchase Contract Agreement, the
Holder of the Income PRIDES evidenced hereby shall pay, on the Purchase Contract
Settlement Date, the applicable Purchase Price for the shares of Common Stock
purchased pursuant to each Purchase Contract evidenced hereby by effecting a
Cash Settlement, an Early Settlement or Cash Merger Early Settlement. A Holder
of Income PRIDES who does not make such payment in accordance with the Purchase
Contract Agreement or who does not notify the Agent of such Holder's intention,
on or prior to 5:00 p.m., New York City time, on the fifth Business Day
immediately preceding the Purchase Contract Settlement Date, to make an
effective Cash Settlement or an Early Settlement or Cash Merger Early
Settlement, shall have defaulted in its obligations under the related Purchase
Contract and the Collateral Agent shall exercise its rights as a secured
creditor for the benefit of the Company under the Purchase Contract Agreement
and the Pledge Agreement and shall apply the Proceeds of the sale of the related
applicable Pledged Debt Securities held by the Collateral Agent to satisfy the
Holder's obligations under such Purchase Contract to purchase Common Stock at
the Purchase Price.

         The Company shall not be obligated to issue any shares of Common Stock
in respect of the Purchase Contract on the Purchase Contract Settlement Date or
deliver any certificates

                                       A-4

<PAGE>

therefor to the Holder unless it shall have received payment in full of the
aggregate Purchase Price for the shares of Common Stock to be purchased
thereunder in the manner set forth in the Purchase Contract Agreement.

         Under and subject to the terms of the Pledge Agreement and the Purchase
Contract Agreement, the Agent will be entitled to exercise the voting and any
other consensual rights pertaining to the Pledged Debt Securities, but only to
the extent instructed by the Holders as described in the paragraph below. Upon
receipt of notice of any meeting at which holders of Debt Securities are
entitled to vote or upon the solicitation of consents, waivers or proxies of
holders of Debt Securities, the Agent shall, as soon as practicable thereafter,
mail to the Holders of Income PRIDES a notice (a) containing such information as
is contained in the notice or solicitation, (b) stating that each Income PRIDES
Holder on the record date set by the Agent therefor shall be entitled to
instruct the Agent as to the exercise of the voting rights pertaining to the
Debt Securities constituting a part of such Holder's Income PRIDES and (c)
stating the manner in which such instructions may be given. Upon the written
request of the Income PRIDES Holders on such record date, the Agent shall
endeavor insofar as practicable to vote or cause to be voted, in accordance with
the instructions set forth in such requests, the maximum number of Debt
Securities as to which any particular voting instructions are received. In the
absence of specific instructions from the Holder of an Income PRIDES, the Agent
shall abstain from voting any Debt Securities evidenced by such Income PRIDES.

         Upon the occurrence of a Tax Event Redemption prior to the Purchase
Contract Settlement Date, the Redemption Price payable on the Tax Event
Redemption Date with respect to the Applicable Principal Amount of Debt
Securities shall be delivered to the Collateral Agent in exchange for the
Pledged Debt Securities. Pursuant to the terms of the Pledge Agreement, the
Collateral Agent will apply an amount equal to the Redemption Amount of such
Redemption Price to purchase on behalf of the Holders of Income PRIDES the Tax
Event Treasury Portfolio and promptly remit the remaining portion of such
Redemption Price, if any, to the Agent for payment to the Holders of such Income
PRIDES. The Tax Event Treasury Portfolio will be substituted for the Pledged
Debt Securities, and will be held by the Collateral Agent in accordance with the
terms of the Pledge 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 occurrence of a Tax Event Redemption prior to the
Purchase Contract Settlement Date, the Holders of Income PRIDES and the
Collateral Agent shall have such security interests, rights and obligations with
respect to the Tax Event Treasury Portfolio as the Holder of Income PRIDES and
the Collateral Agent had in respect of the Debt Securities subject to the Pledge
thereof as provided in Articles II, III, IV, V and VI of the Pledge Agreement,
and any reference herein to the Pledged Debt Securities shall be deemed to be
reference to such Tax Event Treasury Portfolio. The Company may cause to be made
in any Income PRIDES Certificates thereafter to be issued such change in
phraseology and form (but not in substance) as may be appropriate to reflect the
substitution of the Tax Event Treasury Portfolio for Debt Securities as
collateral.

         Upon the successful remarketing of the Pledged Debt Securities on a
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 the

                                       A-5

<PAGE>

Pledge 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 on the Reset Date the Remarketing Treasury Portfolio
and promptly remit the remaining portion of such proceeds to the 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 the Pledge
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 Pledged Debt Securities on a
Remarketing Date, the Holders of Income PRIDES and the Collateral Agent shall
have such security interests, upon the substitution of the Treasury Portfolio
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 Debt
Securities subject to the Pledge thereof as provided in Articles II, III, IV, V
and VI of the Pledge Agreement, and any reference herein to the Debt Securities
shall be deemed to be reference to such Remarketing Treasury Portfolio. The
Company may cause to be made in any Income PRIDES Certificates thereafter to be
issued such change in phraseology and form (but not in substance) as may be
appropriate to reflect the substitution of the Remarketing Treasury Portfolio
for Debt Securities as collateral.

         The Income PRIDES are issuable only in registered form and only in
denominations of a single Income PRIDES and any integral multiple thereof. The
transfer of any Income PRIDES Certificate will be registered and Income PRIDES
Certificates may be exchanged as provided in the Purchase Contract Agreement.
The Income PRIDES Registrar may require a Holder, among other things, to furnish
appropriate endorsements and transfer documents permitted by the Purchase
Contract Agreement. No service charge shall be required for any such
registration of transfer or exchange, but the Company and the Agent may require
payment of a sum sufficient to cover any tax or other governmental charge
payable in connection therewith.

         A Holder of an Income PRIDES may, at any time on or prior to the fifth
Business Day immediately preceding the Purchase Contract Settlement Date, create
or recreate a Growth PRIDES and separate the Debt Security or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as applicable, from
the related Purchase Contract in respect of such Income PRIDES by substituting
the appropriate Treasury Security for the Debt Security, or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, that form a part of
such Income PRIDES in accordance with the Purchase Contract Agreement; provided,
however, that if a successful remarketing of the Debt Securities has occurred on
a Remarketing Date or a Tax Event Redemption has occurred, Holders of such
Income PRIDES may make such Collateral Substitutions at any time 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 32,000
Income PRIDES (or such other number of Income PRIDES as may be determined by the
Reset Agent upon a successful remarketing of Debt Securities if the Reset Date
is not an Interest Payment Date) if the Applicable Ownership Interests in the
appropriate Treasury Portfolio are being substituted by Treasury Securities. To
create 40 Growth PRIDES (if a Tax Event Redemption has not occurred and the Debt
Securities remain a component of the Income PRIDES and), or 32,000 Growth
PRIDES, or such other number of Growth PRIDES as may be determined by the

                                       A-6

<PAGE>

Reset Agent upon a successful remarketing of Debt Securities if the Reset Date
is not an Interest Payment Date, (if a Tax Event Redemption has occurred or the
Remarketing Treasury Portfolio has replaced the Debt Securities as a component
of the Income PRIDES as a result of a successful remarketing of such Debt
Securities), the Income PRIDES Holder shall

                  (a)      if a Treasury Portfolio has not replaced any Debt
         Securities as a component of Income PRIDES as a result of a successful
         remarketing of the Debt Securities on a Remarketing Date or a Tax Event
         Redemption, 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 on a Remarketing Date 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 $800,000 (or $25 multiplied by such number of
         Income PRIDES as may be determined by the Reset Agent as described in
         (ii) above); 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, 32,000 Income PRIDES (or such other number of Income
         PRIDES as may be determined by the Reset Agent upon a successful
         remarketing of Debt Securities if the Reset Date is not an Interest
         Payment Date), to the Agent accompanied by a notice to the Agent,
         substantially in the form of Exhibit B to the Pledge Agreement, stating
         that the Holder has transferred the relevant types and amounts of
         Treasury Securities to the Collateral Agent and requesting that the
         Agent instruct the Collateral Agent to release the applicable Debt
         Securities or the Applicable Ownership Interest in the appropriate
         Treasury Portfolio, as the case may be, underlying such Income PRIDES,
         whereupon the Agent shall promptly give such instruction to the
         Collateral Agent, substantially in the form of Exhibit A to the Pledge
         Agreement.

         Upon receipt of the Treasury Securities described in clause (a) or (b)
above and the instructions described in clause (c) above, in accordance with the
terms of the Pledge Agreement, the Collateral Agent will release from the
Pledge, to the Agent, on behalf of the Holder, Debt Securities or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as the case may be,
that had been components of such Income PRIDES, free and clear of the Company's
security interest therein, and upon receipt thereof the Agent shall promptly:

         (i)      cancel the related Income PRIDES surrendered and transferred;

         (ii)     transfer the Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, that had
been components of such Income PRIDES to the Holder; and

         (iii)    authenticate, execute on behalf of such Holder and deliver a
Growth PRIDES Certificate executed by the Company in accordance with the
Purchase Contract Agreement

                                       A-7

<PAGE>

evidencing the same number of Purchase Contracts as were evidenced by the
cancelled Income PRIDES.

         Holders who elect to separate the Debt Securities or the Applicable
Ownership Interest in the appropriate Treasury Portfolio, as the case may be,
from the related Purchase Contracts and to substitute Treasury Securities for
such Debt Securities or the Applicable Ownership Interest in the appropriate
Treasury Portfolio, as the case may be, shall be responsible for any fees or
expenses payable to the Collateral Agent for its services as Collateral Agent in
respect of the substitution, and the Company shall not be responsible for any
such fees or expenses.

         A Holder of a Growth PRIDES may create or recreate an Income PRIDES by
depositing with the Collateral Agent a Debt Security 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 exchange for the release of
such Pledged Treasury Securities in accordance with the terms of the Purchase
Contract Agreement and the Pledge Agreement.

         Subject to the next succeeding paragraph, the Company shall pay, on
each Payment Date, the Contract Adjustment Payments payable in respect of each
Purchase Contract to the Person in whose name the Income PRIDES Certificate
evidencing such Purchase Contract is registered on the Register at the close of
business on the Record Date next preceding such Payment Date. The Contract
Adjustment Payments will be payable at the Paying Office or, at the option of
the Company, by check mailed to the address of the Person entitled thereto at
such address as it appears on the Income PRIDES Register or by wire transfer to
an account appropriately designated in writing by such person.

         The Company shall have the right, at any time prior to the Purchase
Contract Settlement Date, to defer the payment of any or all of the Contract
Adjustment Payments otherwise payable on any Payment Date, but only if the
Company shall give the Holders and the Agent written notice of its election to
defer such payment (specifying the amount to be deferred) as provided in the
Purchase Contract Agreement. Any Contract Adjustment Payments so deferred shall
bear additional Contract Adjustment Payments thereon at the rate of 6.25% per
annum (computed on the basis of a 360-day year of twelve 30-day months),
compounding on each succeeding Payment Date, until paid in full (such deferred
installments of Contract Adjustment Payments, if any, together with the
additional Contract Adjustment Payments accrued thereon, are referred to herein
as the "Deferred Contract Adjustment Payments"). Deferred Contract Adjustment
Payments, if any, shall be due on the next succeeding Payment Date except to the
extent that payment is deferred pursuant to the Purchase Contract Agreement. No
Contract Adjustment Payments may be deferred to a date that is after the
Purchase Contract Settlement Date.

         In the event that the Company elects to defer the payment of Contract
Adjustment Payments on the Purchase Contracts until the Purchase Contract
Settlement Date, the Holder of this Income PRIDES Certificate will receive on
the Purchase Contract Settlement Date, in lieu of a cash payment, a number of
shares of Common Stock (in addition to the number of shares equal to the
Settlement Rate) equal to (x) the aggregate amount of Deferred Contract
Adjustment

                                       A-8

<PAGE>

Payments payable to the Holder of this Income PRIDES Certificate divided by (y)
the Applicable Market Value.

         In the event the Company exercises its option to defer the payment of
Contract Adjustment Payments, then, until the Deferred Contract Adjustment
Payments have been paid, neither the Company nor any of its subsidiaries shall
declare or pay dividends on, make distributions with respect to, or redeem,
purchase or acquire, or make a liquidation payment with respect to, any of the
Company's capital stock or make guarantee payments with respect to any of the
Company's capital stock other than (i) redemptions, purchases or acquisitions of
capital stock of the Company in connection with the satisfaction by the Company
in connection with any employment contract, benefit plan or other similar
arrangement with or for the benefit of employees, officers, directors or agents
or a stock purchase or dividend reinvestment plan, or the satisfaction by the
Company of its obligations pursuant to any contract or security outstanding on
the date of such event requiring the Company to redeem, purchase or acquire its
capital stock, (ii) as a result of a reclassification of the Company's capital
stock or the exchange or conversion of all or a portion of one class or series
of the Company's capital stock for another class or series of the Company's
capital stock, (iii) the purchase of fractional interests in shares of the
Company's capital stock pursuant to the conversion or exchange provisions of the
Company's capital stock or the security being converted or exchanged, (iv)
dividends or distributions in capital stock of the Company (or rights to acquire
capital stock of the Company), or repurchases, redemptions or acquisitions of
capital stock in connection with the issuance or exchange of capital stock of
the Company (or securities convertible into or exchangeable for shares of the
Company's capital stock) or (v) redemptions, exchanges or repurchases of any
rights outstanding under a shareholder rights plan of the Company or payment
thereunder of a dividend or distribution of or with respect to rights in the
future.

         The Company's obligations with respect to Contract Adjustment Payments
(including any accrued or Deferred Contract Adjustment Payments), will be
subordinated and junior in right of payment to the Company's obligations under
any Senior Indebtedness. Upon any payment or distribution of the Company's
assets to its creditors upon any dissolution, winding up, liquidation or
reorganization, whether voluntary or involuntary, or in bankruptcy, insolvency,
receivership or other similar proceedings, the holders of all Senior
Indebtedness shall first be entitled to receive payment in full of all amounts
due or to become due thereon, or payment of such amounts shall have been
provided for, before the holders of the Securities shall be entitled to receive
any Contract Adjustment Payments.

         No payment of Contract Adjustment Payments may be made if (i) any
payment default on any Senior Indebtedness has occurred and is continuing beyond
any applicable grace period; or (ii) any default other than a payment default
with respect to Senior Indebtedness occurs and is continuing that permits the
acceleration of the maturity thereof and the Agent receives a written notice of
such default from the Company or the holders of such Senior Indebtedness.

         The Purchase Contracts and all obligations and rights of the Company
and the Holders thereunder, including, without limitation, the rights of the
Holders to receive and the obligation of the Company to pay any Contract
Adjustment Payments or any Deferred Contract Adjustment Payments, and the rights
and obligations of the Holders to purchase Common Stock, shall immediately and
automatically terminate, without the necessity of any notice or action by any

                                       A-9

<PAGE>

Holder, the Agent or the Company, if, on or prior to the Purchase Contract
Settlement Date, a Termination Event shall have occurred. Upon the occurrence of
a Termination Event, the Company shall promptly but in no event later than two
Business Days thereafter give written notice to the Agent, the Collateral Agent
and to the Holders, at their addresses as they appear in the Income PRIDES
Register. Upon and after the occurrence of a Termination Event, the Collateral
Agent shall release the Debt Securities or the Applicable Ownership Interest in
the appropriate Treasury Portfolio, as the case may be, forming a part of the
Income PRIDES evidenced hereby from the Pledge in accordance with the provisions
of the Pledge Agreement.

         Subject to and upon compliance with the provisions of the Purchase
Contract Agreement, a Holder of Income PRIDES may settle the related Purchase
Contracts in their entirety at any time on or prior to the fifth Business Day
immediately preceding the Purchase Contract Settlement Date, but only in
integral multiples of 40 Income PRIDES; provided, however, that if a Treasury
Portfolio has become a component of the Income PRIDES, Holders of Income PRIDES
may settle early only in integral multiples of 32,000 Income PRIDES (or such
other number of Income PRIDES as may be determined by the Reset Agent upon a
successful remarketing of Debt Securities if the Reset Date is not an Interest
Payment Date) at any time on or prior to the second Business Day immediately
preceding the Purchase Contract Settlement Date. The right to Early Settlement
is subject to there being in effect, if so required under Federal securities
laws, a registration statement covering the shares of Common Stock to be
delivered in respect of the Purchase Contracts being settled (it being
understood that, if so required under Federal securities laws, the Company shall
use commercially reasonable efforts to (1) cause such a registration statement
to become effective and (2) provide a prospectus in connection therewith, in
each case, in a form appropriate for Early Settlements). In order to exercise
the right to effect any such early settlement ("Early Settlement") with respect
to any Purchase Contracts evidenced by this Income PRIDES Certificate, the
Holder of this Income PRIDES Certificate shall deliver this Income PRIDES
Certificate to the Agent at the Corporate Trust Office duly endorsed for
transfer to the Company or in blank with the form of Election to Settle Early
set forth below duly completed and executed and accompanied by payment payable
to the Company in immediately available funds in an amount (the "Early
Settlement Amount") equal to the sum of (i) $25 times the number of Purchase
Contracts being settled, plus (ii) if such delivery is made with respect to any
Purchase Contracts during the period from the close of business on any Record
Date next preceding any Payment Date to the opening of business on such Payment
Date, an amount equal to the Contract Adjustment Payments payable, if any, on
such Payment Date with respect to such Purchase Contracts. Upon Early Settlement
of Purchase Contracts by a Holder of the related Securities, the Pledged Debt
Securities or the Pledged Applicable Ownership Interest in the a Treasury
Portfolio underlying such Securities shall be released from the Pledge as
provided in the Pledge Agreement and the Holder shall be entitled to receive a
number of shares of Common Stock on account of each Purchase Contract forming
part of an Income PRIDES as to which Early Settlement is effected equal to the
Early Settlement Rate which shall be equal to 0.7396 newly issued shares of
Common Stock per Purchase Contract (the "Early Settlement Rate"); provided
however, that upon the Early Settlement of the Purchase Contracts, (i) the
Holder thereof will forfeit the right to receive any Deferred Contract
Adjustment Payments, if any, on such Purchase Contracts, (ii) the Holder's right
to receive additional Contract Adjustment Payments in respect of such Purchase
Contracts will terminate, and (iii) no adjustment will be made to or for the
Holder on account of Deferred Contract Adjustment Payments, or any amount
accrued in respect of Contract Adjustment Payments. The

                                      A-10

<PAGE>

Early Settlement Rate shall be adjusted in the same manner and at the same time
as the Settlement Rate is adjusted as provided in the Purchase Contract
Agreement.

         Subject to and upon compliance with the provisions of the Purchase
Contract Agreement, if, prior to the Purchase Contract Settlement Date, (i) the
Company merges with or into another entity, (ii) the Common Stock is converted,
exchanged, reclassified or cancelled in such merger, and (iii) at least 30% of
the consideration received by the Company's shareholders for its Common Stock in
such merger consists of cash or cash equivalents (a "Cash Merger"), then each
Holder of Securities shall have the right to settle the Purchase Contract at the
Settlement Rate in effect immediately before the Cash Merger (a "Cash Merger
Early Settlement"). The right to Cash Merger Early Settlement is subject to
there being in effect, if so required under Federal securities laws, a
registration statement covering the securities to be delivered in respect of the
Purchase Contracts being settled (it being understood that, if so required under
Federal securities laws, the Company shall use commercially reasonable efforts
to (1) cause such a registration statement to become effective and (2) provide a
prospectus in connection therewith, in each case, in a form appropriate for
Early Settlements). Upon Cash Merger Early Settlement, (x) the holder's rights
to receive Deferred Contract Adjustment Payments, if any, on the Purchase
Contracts being settled will be forfeited, (y) the holder's right to receive
additional Contract Adjustment Payments in respect of such Purchase Contracts
will terminate and (z) no adjustment will be made to or for the holder on
account of Deferred Contract Adjustment Payments, or any amount accrued in
respect of Contract Adjustment Payments. The Company shall provide each of the
Holders with a notice of the consummation of the Cash Merger within five
Business Days after the consummation thereof. Such notice will specify, among
other things, the "Cash Merger Early Settlement Date," which shall be 10
Business Days after the date of such notice, and the amount of the cash,
securities and other consideration receivable by each Holder upon a Cash Merger
Early Settlement. To exercise a Cash Merger Early Settlement, a Holder shall
deliver, present and surrender this Income PRIDES Certificate duly endorsed for
transfer to the Company in blank at the offices of the Agent, accompanied by
payment to the Company in immediately available funds of an amount equal to (I)
$25 multiplied by (II) the number of Purchase Contracts being settled, plus
(III) if such delivery is made with respect to any Purchase Contracts during the
period from the close of business on any Record Date next preceding any Payment
Date to the opening of business on such Payment Date, an amount equal to the
Contract Adjustment Payments payable on such Payment Date with respect to such
Purchase Contracts; provided that no payment is required if the Company has
elected to defer the Contract Adjustment Payments which would otherwise be
payable on the Payment Date, no later than 5:00 p.m., New York City time, on the
Business Day immediately preceding the Cash Merger Early Settlement Date. Except
as provided in the immediately preceding sentence and subject to the second to
last paragraph of Section 5.2 of the Purchase Contract Agreement, no payment or
adjustment shall be made upon Early Settlement of any Purchase Contract on
account of any Contract Adjustment Payments accrued on such Purchase Contract or
on account of any dividends on the Common Stock issued upon such Early
Settlement. Upon a Cash Merger Early Settlement, the Pledged Debt Securities or
the Pledged Applicable Ownership Interest in the a Treasury Portfolio underlying
the Securities being settled shall be released from the Pledge as provided in
the Pledge Agreement and the Company will deliver, or cause to be delivered, to
Holders duly exercising a Cash Merger Early Settlement on the Cash Merger Early
Settlement Date the kind and amount of securities, cash or other property that
such Holders would have

                                      A-11

<PAGE>

been entitled to receive if they had settled the Purchase Contracts immediately
before the Cash Merger at the Settlement Rate in effect at such time.

         Upon registration of transfer of this Income PRIDES Certificate, the
transferee shall be bound (without the necessity of any other action on the part
of such transferee, except as may be required by the Agent pursuant to the
Purchase Contract Agreement), under the terms of the Purchase Contract Agreement
and the Purchase Contracts evidenced hereby and the transferor shall be released
from the obligations under the Purchase Contracts evidenced by this Income
PRIDES Certificate. The Company covenants and agrees, and the Holder, by its
acceptance hereof, likewise covenants and agrees, to be bound by the provisions
of this paragraph.

         The Holder of this Income PRIDES Certificate, by its acceptance hereof,
irrevocably authorizes the Agent to enter into and perform the related Purchase
Contracts forming part of the Income PRIDES evidenced hereby on its behalf as
its attorney-in-fact, expressly withholds any consent to the assumption of the
Purchase Contracts by the Company, its trustee in bankruptcy, receiver,
liquidator or a person or entity performing similar functions, in the event that
the Company becomes the subject of a case under the Bankruptcy Code or subject
to other similar Federal or State law providing for reorganization or
liquidation, agrees to be bound by the terms and provisions thereof, covenants
and agrees to perform its obligations under such Purchase Contracts, consents to
the provisions of the Purchase Contract Agreement, authorizes the Agent to enter
into and perform the Pledge Agreement on its behalf as its attorney-in-fact, and
consents to and agrees to be bound by the Pledge of the Pledged Debt Securities
or the Pledged Applicable Ownership Interest in a Treasury Portfolio, as the
case may be, underlying this Income PRIDES Certificate pursuant to the Pledge
Agreement. The Holder, by its acceptance hereof, further covenants and agrees,
that, to the extent and in the manner provided in the Purchase Contract
Agreement and the Pledge Agreement, but subject to the terms thereof, payments
in respect of the principal of the Pledged Debt Securities, or the portion of
the Applicable Ownership Interest (as specified in clauses (1)(i) or 2(i) of the
definition of such term) in the appropriate Treasury Portfolio, on the Purchase
Contract Settlement Date shall be paid by the Collateral Agent to the Company in
satisfaction of such Holder's obligations under such Purchase Contract and such
Holder shall acquire no right, title or interest in such payments.

         The Holder of this Income PRIDES Certificate, by its acceptance hereof,
covenants and agrees to treat itself as the owner, for United States federal,
state and local income and franchise tax purposes, of the Debt Securities or the
Applicable Ownership Interest in the appropriate Treasury Portfolio forming part
of the Income PRIDES evidenced hereby. The Holder of this Income PRIDES
Certificate, by its acceptance hereof, further covenants and agrees to treat the
Debt Securities forming part of the Income PRIDES evidenced hereby as
indebtedness of the Company for United States federal, state and local income
and franchise tax purposes.

         Subject to certain exceptions, the provisions of the Purchase Contract
Agreement may be amended with the consent of the Holders of a majority of the
Purchase Contracts. In addition, certain amendments to the Purchase Contract
Agreement may be made without any consent of the Holders as provided in the
Purchase Contract Agreement.

                                      A-12

<PAGE>

         THE PURCHASE CONTRACTS SHALL FOR ALL PURPOSES BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

         The Company and the Agent and any agent of the Company or the Agent may
treat the Person in whose name this Income PRIDES Certificate is registered on
the Income PRIDES Register as the owner of the Income PRIDES evidenced hereby
for the purpose of receiving payments of interest payable quarterly on the Debt
Securities receiving payments of Contract Adjustment Payments and any Deferred
Contract Adjustment Payments, performance of the Purchase Contracts and for all
other purposes whatsoever, whether or not any payments in respect thereof be
overdue and notwithstanding any notice to the contrary, and neither the Company,
the Agent nor any such agent shall be affected by notice to the contrary.

         The Purchase Contracts shall not, prior to the settlement thereof in
accordance with the Purchase Contract Agreement, entitle the Holder to any of
the rights of a holder of shares of Common Stock.

         A copy of the Purchase Contract Agreement is available for inspection
at the offices of the Agent during regular business hours of the Agent.

         Unless the certificate of authentication hereon has been executed by
the Agent by manual signature, this Income PRIDES Certificate shall not be
entitled to any benefit under the Pledge Agreement or the Purchase Contract
Agreement or be valid or obligatory for any purpose.

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

                                            AMERUS GROUP CO.

                                            By:_________________________________

                                      A-13

<PAGE>

                                            HOLDER SPECIFIED ABOVE (as to
                                            obligations of such Holder under the
                                            Purchase Contracts evidenced hereby)

                                            By: WACHOVIA BANK, NATIONAL
                                                ASSOCIATION,
                                                not individually but solely as
                                                Attorney-in-Fact of such Holder

                                            By:_________________________________
                                               Name:
                                               Title:
Dated:

                                      A-14

<PAGE>

                      AGENT'S CERTIFICATE OF AUTHENTICATION

         This is one of the Income PRIDES Certificates referred to in the within
mentioned Purchase Contract Agreement.

                                            WACHOVIA BANK, NATIONAL ASSOCIATION
                                            as Purchase Contract Agent and
                                            Trustee

                                            By:_________________________________
                                               Authorized Signatory

                                      A-15

<PAGE>

                                  ABBREVIATIONS

         The following abbreviations, when used in the inscription on the face
of this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

TEN COM -                                   as tenants in common

UNIF GIFT MIN ACT -                         -------------Custodian--------------
                                            (cust)                       (minor)

                                            Under Uniform Gifts to Minors Act
                                            -------------------------
                                                         (State)

TEN ENT -                                   as tenants by the entireties

JT TEN -                                    as joint tenants with right of
                                            survivorship and not as tenants in
                                            common

Additional abbreviations may also be used though not in the above list.

                        -------------------------------

         FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
         transfer(s) unto

(Please insert Social Security or Taxpayer I.D. or other Identifying Number of
Assignee)

(Please Print or Type Name and Address Including Postal Zip Code of Assignee)
the within Income PRIDES Certificate and all rights thereunder, hereby
irrevocably constituting and appointing attorney to transfer said Income PRIDES
Certificate on the books of AmerUs Group Co. with full power of substitution in
the premises.

Dated:__________________________________________________________________________
                                                          Signature

                                             NOTICE: The signature to this
                                             assignment must correspond with the
                                             name as it appears upon the face of
                                             the within Income PRIDES
                                             Certificates in every particular,
                                             without alteration or enlargement
                                             or any change whatsoever.

Signature Guarantee: __________________________

Signatures must be guaranteed by an "eligible guarantor institution" meeting the
requirements of the Registrar, which requirements include membership or
participation in the Security Transfer Agent Medallion Program ("STAMP") or such
other "signature guarantee program" as may be

                                      A-16

<PAGE>

determined by the Registrar in addition to, or in substitution for, STAMP, all
in accordance with the Securities Exchange Act of 1934, as amended.

                                      A-17

<PAGE>

                             SETTLEMENT INSTRUCTIONS

         The undersigned Holder directs that a certificate for shares of Common
Stock deliverable upon settlement on or after the Purchase Contract Settlement
Date of the Purchase Contracts underlying the number of Income PRIDES evidenced
by this Income PRIDES Certificate be registered in the name of, and delivered,
together with a check in payment for any fractional share, to the undersigned at
the address indicated below unless a different name and address have been
indicated below. If shares are to be registered in the name of a Person other
than the undersigned, the undersigned will pay any transfer tax payable incident
thereto.

Dated:
                                            ____________________________________
                                               Signature
                                               Signature Guarantee: ____________
                                                 (if assigned to another person)

         Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Registrar, which requirements include membership
or participation in the Security Transfer Agent Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.

If shares are to be registered in the                 REGISTERED HOLDER
name of and delivered to a Person other
than the Holder, please (i) print such
Person's name and address and (ii)
provide a guarantee of your signature:

                                             Please print name and address of
                                             Registered Holder:

___________________________________         ____________________________________
              Name                                         Name

___________________________________         ____________________________________
            Address                                      Address

___________________________________         ____________________________________
___________________________________         ____________________________________
___________________________________         ____________________________________

Social Security or other
Taxpayer Identification
Number, if any

                          ___________________________

                                      A-18

<PAGE>

                            ELECTION TO SETTLE EARLY

The undersigned Holder of this Income PRIDES Certificate hereby irrevocably
exercises the option to effect Early Settlement in accordance with the terms of
the Purchase Contract Agreement with respect to the Purchase Contracts
underlying the number of Income PRIDES evidenced by this Income PRIDES
Certificate specified below. The undersigned Holder directs that a certificate
for shares of Common Stock deliverable upon such Early Settlement be registered
in the name of, and delivered, together with a check in payment for any
fractional share and any Income PRIDES Certificate representing any Income
PRIDES evidenced hereby as to which Early Settlement of the related Purchase
Contracts is not effected, to the undersigned at the address indicated below
unless a different name and address have been indicated below. Pledged Debt
Securities or the Applicable Ownership Interest in the appropriate Treasury
Portfolio, as the case may be, deliverable upon such Early Settlement will be
transferred in accordance with the transfer instructions set forth below. If
shares are to be registered in the name of a Person other than the undersigned,
the undersigned will pay any transfer tax payable incident thereto.

Dated:
                                            ____________________________________
                                                   Signature

Signature Guarantee: ______________
         (if assigned to another person)

Signatures must be guaranteed by an "eligible guarantor institution" meeting the
requirements of the Registrar, which requirements include membership or
participation in the Security Transfer Agent Medallion Program ("STAMP") or such
other "signature guarantee program" as may be determined by the Registrar in
addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.

Number of Securities evidenced hereby as to which Early Settlement of the
related Purchase Contracts is being elected:

If shares of Common Stock or Income                   REGISTERED HOLDER
PRIDES Certificates are to be registered
in the name of and delivered to, and
Pledged Debt Securities, or the Treasury
Portfolio, as the case may be, are to be
transferred to, a Person other than the
Holder, please print such Person's name
and address:

                                             Please print name and address of
                                             Registered Holder:

________________________________________________________________________________
              Name                                         Name

________________________________________________________________________________

                                      A-19

<PAGE>

________________________________________________________________________________
            Address                                      Address

________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________

Social Security or other
Taxpayer Identification
Number, if any______________________________________

                                      A-20

<PAGE>

Transfer Instructions for Pledged Debt Securities, or the Treasury Portfolio, as
the case may be, Transferable Upon Early Settlement or a Termination Event:

                     {TO BE ATTACHED TO GLOBAL CERTIFICATES}

            SCHEDULE OF INCREASES OR DECREASES IN GLOBAL CERTIFICATE

         The following increases or decreases in this Global Certificate have
been made:

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------
                                                  Principal
                                               Amount of this
                                                   Global        Signature of
      Amount of decrease   Amount of increase   Certificate    authorized officer
         in Principal      in Principal Amount following such   of Trustee or
        Amount of the        of the Global       decrease or      Securities
Date  Global Certificate      Certificate         increase        Custodian
---------------------------------------------------------------------------------
<S>   <C>                  <C>                 <C>             <C>

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
</TABLE>

                                      A-21

<PAGE>

                                    EXHIBIT B

                        FORM OF GROWTH PRIDES CERTIFICATE

         THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE
PURCHASE CONTRACT AGREEMENT (AS HEREINAFTER DEFINED) AND IS REGISTERED IN THE
NAME OF THE CLEARING AGENCY OR A NOMINEE THEREOF. THIS CERTIFICATE MAY NOT BE
EXCHANGED IN WHOLE OR IN PART FOR A CERTIFICATE REGISTERED, AND NO TRANSFER OF
THIS CERTIFICATE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY
PERSON OTHER THAN SUCH CLEARING AGENCY OR A NOMINEE THEREOF, EXCEPT IN THE
LIMITED CIRCUMSTANCES DESCRIBED IN THE PURCHASE CONTRACT AGREEMENT.

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE
COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME
AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY,
AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

No. 1                                                 Cusip No. 03072M306
Number of Growth PRIDES 0

                                AMERUS GROUP CO.

                                  Growth PRIDES
                               ($25 Stated Amount)

         This Growth PRIDES Certificate certifies that Cede & Co. is the
registered Holder of the number of Growth PRIDES set forth above. Each Growth
PRIDES represents (a) a stock purchase contract of AmerUs Group Co., an Iowa
corporation (the "Company") (as modified and supplemented and in effect from
time to time, a "Purchase Contract") and (b) a 1/40, or 2.5% undivided
beneficial ownership interest in a Treasury Security. All capitalized terms used
herein without definition herein have the meaning set forth in the Purchase
Contract Agreement referred to below.

         Pursuant to the Pledge Agreement, the Treasury Securities constituting
part of each Growth PRIDES evidenced hereby have been pledged to the Collateral
Agent, for the benefit of the Company, to secure the obligations of the Holder
under the Purchase Contract comprising a portion of such Growth PRIDES.

         The Pledge Agreement provides that all payments of the principal of any
Treasury Securities received by the Collateral Agent shall be paid by the
Collateral Agent by wire transfer in same day funds (i) in the case of any
principal payments with respect to any Treasury

                                       B-1

<PAGE>

Securities that have been released from the Pledge pursuant to the Pledge
Agreement, to the Holders of the applicable Growth PRIDES to the accounts
designated by them in writing 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 (ii) in the case of the
principal of any Pledged Treasury Securities, to the Company on the Purchase
Contract Settlement Date (as defined herein) in accordance with the terms of the
Pledge Agreement, in full satisfaction of the respective obligations of the
Holders of the Growth PRIDES of which such Pledged Treasury Securities are a
part under the Purchaser Contracts forming a part of such Growth PRIDES.

         Each Purchase Contract evidenced hereby obligates the Holder of this
Growth PRIDES Certificate to purchase, and the Company, to sell not later than
August 16, 2006 (the "Purchase Contract Settlement Date"), at a price of $25 in
cash (the "Purchase Price"), a number of newly issued shares of Common Stock,
without par value, of the Company including, where applicable, the preference
stock purchase rights appurtenant thereto ("Common Stock"), equal to the
applicable Settlement Rate (as defined below), unless on or prior to the
Purchase Contract Settlement Date there shall have occurred a Termination Event
or an Early Settlement or Cash Merger Early Settlement with respect to the
Growth PRIDES of which such Purchase Contract is a part, all as provided in the
Purchase Contract Agreement and more fully described below.

         The "Settlement Rate" is equal to (a) if the Applicable Market Value
(as defined below) is equal to or greater than $33.80 (the "Threshold
Appreciation Price"), a number of shares per Purchase Contract equal to the
product of (i) the Stated Amount divided by the Reference Price, multiplied by
(iii) one minus a fraction, the numerator of which is $7.80 and the denominator
of which is the Applicable Market Value, (b) if the Applicable Market Value is
less than the Threshold Appreciation Price, but is greater than $26.00 (the
"Reference Price"), the number of shares of Common Stock per Purchase Contract
equal to $25 divided by the Applicable Market Value and (c) if the Applicable
Market Value is less than or equal to the Reference Price, 0.9615 shares of
Common Stock per Purchase Contract, in each case subject to adjustment as
provided in the Purchase Contract Agreement (and in each case rounded upward or
downward to the nearest 1/10,000th of a share). No fractional shares of Common
Stock will be issued upon settlement of Purchase Contracts, as provided in the
Purchase Contract Agreement.

         The Company shall pay on each Payment Date other than the Initial Reset
Date is not also a regular quarterly Payment Date in respect of each Purchase
Contract forming part of a Growth PRIDES evidenced hereby an amount (the
"Contract Adjustment Payments") equal to 0.75% per annum of the Stated Amount
computed on the basis of a 360 day year of twelve 30 day months, subject to
deferral at the option of the Company as provided in the Purchase Contract
Agreement and more fully described below. Such Contract Adjustment Payments
shall be payable to the Person in whose name this Growth PRIDES Certificate (or
a Predecessor Growth PRIDES Certificate or a Predecessor Income PRIDES
Certificate) is registered on the Register at the close of business on the
Record Date for such Payment Date.

         Contract Adjustment Payments will be payable at the Paying Office or,
at the option of the Company, by check mailed to the address of the Person
entitled thereto as such address

                                      B-2

<PAGE>

appears on the Growth PRIDES Register or by wire transfer to an account
appropriately designated in writing by the Person entitled to payment.

         Unless the context otherwise requires, each provision of this Security
shall be part of the Purchase Contracts evidenced hereby. This Security and each
Purchase Contract evidenced hereby is governed by a Purchase Contract Agreement,
dated as of May 28, 2003 (as may be supplemented from time to time, the
"Purchase Contract Agreement") between the Company and Wachovia Bank, National
Association, as purchase contract agent (including any successor thereunder,
herein called the "Agent"), to which Purchase Contract Agreement and
supplemental agreements thereto reference is hereby made for a description of
the respective rights, limitations of rights, obligations, duties and immunities
thereunder of the Agent, the Company and the Holders and of the terms upon which
the Growth PRIDES Certificates are, and are to be, executed and delivered.

         Each Purchase Contract evidenced hereby, which is settled either
through Early Settlement, Cash Merger Early Settlement or Cash Settlement, shall
obligate the Holder of the related Growth PRIDES to purchase at the applicable
Purchase Price, and the Company to sell, a number of newly issued shares of
Common Stock equal to the applicable Early Settlement Rate or the Settlement
Rate, as the case may be.

         The "Applicable Market Value" means the average of the Closing Price
per share of Common Stock on each of the 20 consecutive Trading Days ending on
the third Trading Day immediately preceding the Purchase Contract Settlement
Date or, in the event of a Cash Merger, ending on the third Business Day
immediately preceding the consummation of the Cash Merger. The "Closing Price"
of the Common Stock on any date of determination means the closing sale price
(or, if no closing price is reported, the last reported sale price) of the
Common Stock on the New York Stock Exchange (the "NYSE") on such date or, if the
Common Stock is not listed for trading on the NYSE on any such date, as reported
in the composite transactions for the principal United States national or
regional securities exchange on which the Common Stock is so listed. If the
Common Stock is not so listed on a United States national or regional securities
exchange, the Closing Price means the last sale price of the Common Stock as
reported by the NASDAQ Stock Market, or if the Common Stock is not so reported,
the last quoted bid price for the Common Stock in the over-the-counter market as
reported by the National Quotation Bureau or similar organization. If such bid
price is not available, the Closing Price means market value of the Common Stock
on such date as determined by a nationally recognized independent investment
banking firm retained by the Company for this purpose. A "Trading Day" means a
day on which the Common Stock (A) is not suspended from trading on any national
or regional securities exchange or association or over-the-counter market at the
close of business and (B) has traded at least once on the national or regional
securities exchange or association or over-the-counter market that is the
primary market for the trading of the Common Stock.

         In accordance with the terms of the Purchase Contract Agreement, the
Holder of the Growth PRIDES evidenced hereby shall pay, on the Purchase Contract
Settlement Date, the Purchase Price for the shares of Common Stock purchased
pursuant to each Purchase Contract evidenced hereby by effecting a Cash
Settlement, an Early Settlement or a Cash Merger Early Settlement of each such
Purchase Contract or by applying a principal amount of the Pledged Treasury
Securities underlying such Holder's Growth PRIDES equal to the Stated Amount of

                                      B-3

<PAGE>

such Purchase Contract to the purchase of Common Stock. A Holder of Growth
PRIDES who does not make such payment in accordance with the Purchase Contract
Agreement or who does not notify the Agent of such Holder's intention, on or
prior to 5:00 p.m., New York City time, on the fifth Business Day immediately
preceding the Purchase Contract Settlement Date, to make an effective Cash
Settlement, Early Settlement, or Cash Merger Early Settlement shall have
defaulted in its obligations under the related Purchase Contract, and the
Collateral Agent shall exercise its rights as a secured creditor for the benefit
of the Company under the Purchase Contract Agreement and the Pledge Agreement
and shall apply the principal amount at maturity of the related Pledged Treasury
Securities held by the Collateral Agent to the Purchase Price of the Common
Stock on such Purchase Contract Settlement Date.

         The Company shall not be obligated to issue any shares of Common Stock
in respect of a Purchase Contract or deliver any certificates therefor to the
Holder unless it shall have received payment in full of the Purchase Price for
the shares of Common Stock to be purchased thereunder in the manner set forth in
the Purchase Contract Agreement.

         The Growth PRIDES Certificates are issuable only in registered form and
only in denominations of a single Growth PRIDES and any integral multiple
thereof. The transfer of any Growth PRIDES Certificate will be registered and
Growth PRIDES Certificates may be exchanged as provided in the Purchase Contract
Agreement. The Growth PRIDES Registrar may require a Holder, among other things,
to furnish appropriate endorsements and transfer documents permitted by the
Purchase Contract Agreement. No service charge shall be required for any such
registration of transfer or exchange, but the Company and the Agent may require
payment of a sum sufficient to cover any tax or other governmental charge
payable in connection therewith.

         A Holder of a Growth PRIDES may, at any time on or prior to the fifth
Business Day immediately preceding the Purchase Contract Settlement Date, create
or recreate an Income PRIDES by depositing with the Collateral Agent a Debt
Security or the Applicable Ownership Interest in the applicable 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 the Purchase Contract Agreement; provided, however, that if
the Treasury Portfolio has replaced the Debt Securities as a component of Income
PRIDES as a result of a successful remarketing of the Debt Securities on a
Remarketing Date or a Tax Event Redemption, such Collateral Substitutions may be
made at any time on or prior to the second Business 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 only
Debt Securities, or (ii) only in integral multiples of 32,000 Growth PRIDES (or
such other number of Growth PRIDES as may be determined by the Reset Agent upon
a successful remarketing of Debt Securities if the Reset Date is not an Interest
Payment Date) if any Treasury Security is being replaced by the Applicable
Ownership Interest in the appropriate 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 32,000 Income PRIDES, or such other
number of Income PRIDES as may be determined by the Reset Agent upon a
successful remarketing of Debt Securities if the Reset Date is not an Interest
Payment Date, (if a Tax Event Redemption has

                                      B-4

<PAGE>

occurred or the Remarketing Treasury Portfolio has replaced the Debt Securities
as a result of a successful remarketing of such 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 of the Debt Securities on Remarketing Date or a Tax Event
         Redemption, on or prior to the fifth Business Day immediately 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 on a Remarketing Date 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 Treasury
         Portfolio for each 32,000 Income PRIDES (or such other number of Income
         PRIDES as may be determined by the Reset Agent upon a successful
         remarketing of Debt Securities if the Reset Date is not an Interest
         Payment Date) being created by the Holder, and having an aggregate
         principal amount of $800,000 (or $25 multiplied by such number of
         Growth PRIDES as may be determined by the Reset Agent as described in
         (ii) above); and

                  (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, 32,000 Income PRIDES (or such other number of Income
         PRIDES as may be determined by the Reset Agent upon a successful
         remarketing of Debt Securities if the Reset Date is not an Interest
         Payment Date), to the Agent accompanied by a notice to the Agent,
         substantially in the form of Exhibit B to the Pledge Agreement, 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 Agent instruct the Collateral Agent to release the Treasury
         Securities underlying such Growth PRIDES, whereupon the Agent shall
         promptly give such instruction to the Collateral Agent, substantially
         in the form of Exhibit A to the Pledge Agreement.

         Upon receipt of the Debt Securities or the Applicable Ownership
Interest in the appropriate Treasury Portfolio, as the case may be, described in
clause (a) or (b) above and the instructions described in clause (c) above, in
accordance with the terms of the Pledge Agreement, the Collateral Agent will
effect the release of the Treasury Securities having a corresponding aggregate
principal amount from the Pledge to the Agent free and clear of the Company's
security interest therein, and upon receipt thereof the Agent shall promptly:

         (i)      cancel the related Growth PRIDES surrendered and transferred;

         (ii)     transfer the Treasury Securities that had been components of
such Growth PRIDES to the Holder; and

         (iii)    authenticate, execute on behalf of such Holder and deliver an
Income PRIDES Certificate executed by the Company in accordance with the
Purchase Contract Agreement

                                      B-5

<PAGE>

evidencing the same number of Purchase Contracts as were evidenced by the
cancelled Growth PRIDES.

         Holders who elect to separate Pledged Treasury Securities from the
related Purchase Contracts and to substitute Debt Securities or the Applicable
Ownership Interest in the Treasury Portfolio, as the case may be, for such
Pledged Treasury Securities shall be responsible for any fees or expenses
payable to the Collateral Agent for its services as Collateral Agent in respect
of the substitution, and the Company shall not be responsible for any such fees
or expenses.

         A Holder of an Income PRIDES may create or recreate a Growth PRIDES and
separate the Debt Security or the Applicable Ownership Interest in the
appropriate Treasury Portfolio, as applicable, from the related Purchase
Contract in respect of such Income PRIDES by substituting a Treasury Security
for the Debt Security, or the Applicable Ownership Interest in the appropriate
Treasury Portfolio, that form a part of such Income PRIDES in accordance with
the Purchase Contract Agreement.

         Subject to the next succeeding paragraph, the Company shall pay, on
each Payment Date, the Contract Adjustment Payments payable in respect of each
Purchase Contract to the Person in whose name the Growth PRIDES Certificate
evidencing such Purchase Contract is registered on the Register at the close of
business on the Record Date next preceding such Payment Date. The Contract
Adjustment Payments will be payable at the Paying Office or, at the option of
the Company, by check mailed to the address of the Person entitled thereto at
such address as it appears on the Growth PRIDES Register or by wire transfer to
an account appropriately designated in writing by such person.

         The Company shall have the right, at any time prior to the Purchase
Contract Settlement Date, to defer the payment of any or all of the Contract
Adjustment Payments otherwise payable on any Payment Date, but only if the
Company shall give the Holders and the Agent written notice of its election to
defer such payment (specifying the amount to be deferred) as provided in the
Purchase Contract Agreement. Any Contract Adjustment Payments so deferred shall
bear additional Contract Adjustment Payments thereon at the rate of 6.25% per
annum (computed on the basis of a 360-day year of twelve 30-day months),
compounding on each succeeding Payment Date, until paid in full (such deferred
installments of Contract Adjustment Payments, if any, together with the
additional Contract Adjustment Payments accrued thereon, are referred to herein
as the "Deferred Contract Adjustment Payments"). Deferred Contract Adjustment
Payments, if any, shall be due on the next succeeding Payment Date except to the
extent that payment is deferred pursuant to the Purchase Contract Agreement. No
Contract Adjustment Payments may be deferred to a date that is after the
Purchase Contract Settlement Date.

         In the event that the Company elects to defer the payment of Contract
Adjustment Payments on the Purchase Contracts until the Purchase Contract
Settlement Date, the Holder of this Growth PRIDES Certificate will receive on
the Purchase Contract Settlement Date, in lieu of a cash payment, a number of
shares of Common Stock (in addition to the number of shares equal to the
Settlement Rate) equal to (x) the aggregate amount of Deferred Contract
Adjustment Payments payable to the Holder of this Growth PRIDES Certificate
divided by (y) the Applicable Market Value.

                                      B-6

<PAGE>

         In the event the Company exercises its option to defer the payment of
Contract Adjustment Payments, then, until the Deferred Contract Adjustment
Payments have been paid, neither the Company nor any of its subsidiaries shall
declare or pay dividends on, make distributions with respect to, or redeem,
purchase or acquire, or make a liquidation payment with respect to, any of the
Company's capital stock or make guarantee payments with respect to any of the
Company's capital stock other than (i) redemptions, purchases or acquisitions of
capital stock of the Company in connection with the satisfaction by the Company
in connection with any employment contract, benefit plan or other similar
arrangement with or for the benefit of employees, officers, directors or agents
or a stock purchase or dividend reinvestment plan, or the satisfaction by the
Company of its obligations pursuant to any contract or security outstanding on
the date of such event requiring the Company to redeem, purchase or acquire its
capital stock, (ii) as a result of a reclassification of the Company's capital
stock or the exchange or conversion of all or a portion of one class or series
of the Company's capital stock for another class or series of the Company's
capital stock, (iii) the purchase of fractional interests in shares of the
Company's capital stock pursuant to the conversion or exchange provisions of the
Company's capital stock or the security being converted or exchanged, (iv)
dividends or distributions in capital stock of the Company (or rights to acquire
capital stock of the Company), or repurchases, redemptions or acquisitions of
capital stock in connection with the issuance or exchange of capital stock of
the Company (or securities convertible into or exchangeable for shares of the
Company's capital stock) or (v) redemptions, exchanges or repurchases of any
rights outstanding under a shareholder rights plan of the Company or payment
thereunder of a dividend or distribution of or with respect to rights in the
future.

         The Company's obligations with respect to Contract Adjustment Payments
(including any accrued or Deferred Contract Adjustment Payments), will be
subordinated and junior in right of payment to the Company's obligations under
any Senior Indebtedness. Upon any payment or distribution of the Company's
assets to its creditors upon any dissolution, winding up, liquidation or
reorganization, whether voluntary or involuntary, or in bankruptcy, insolvency,
receivership or other similar proceedings, the holders of all Senior
Indebtedness shall first be entitled to receive payment in full of all amounts
due or to become due thereon, or payment of such amounts shall have been
provided for, before the holders of the Securities shall be entitled to receive
any Contract Adjustment Payments.

         No payment of Contract Adjustment Payments may be made if (i) any
payment default on any Senior Indebtedness has occurred and is continuing beyond
any applicable grace period; or (ii) any default other than a payment default
with respect to Senior Indebtedness occurs and is continuing that permits the
acceleration of the maturity thereof and the Agent receives a written notice of
such default from the Company or the holders of such Senior Indebtedness.

         The Purchase Contracts and all obligations and rights of the Company
and the Holders thereunder, including, without limitation, the rights of the
Holders to receive and the obligation of the Company to pay any Contract
Adjustment Payments or any Deferred Contract Adjustment Payments, and the rights
and obligations of the Holders to purchase Common Stock shall immediately and
automatically terminate, without the necessity of any notice or action by any
Holder, the Agent or the Company, if, on or prior to the Purchase Contract
Settlement Date, a Termination Event shall have occurred. Upon the occurrence of
a Termination Event, the Company shall promptly but in no event later than two
Business Days thereafter give written

                                       B-7

<PAGE>

notice to the Agent, the Collateral Agent and to the Holders, at their addresses
as they appear in the Growth PRIDES Register. Upon and after the occurrence of a
Termination Event, the Collateral Agent shall release the Treasury Securities
from the Pledge in accordance with the provisions of the Pledge Agreement.

         Subject to and upon compliance with the provisions of the Purchase
Contract Agreement, a Holder of Growth PRIDES may settle the related Purchase
Contracts in their entirety at any time on or prior to the second Business Day
immediately preceding the Purchase Contract Settlement Date, but only in
integral multiples of 32,000 Growth PRIDES (or such other number of Growth
PRIDES as may be determined by the Reset Agent upon a successful remarketing of
Debt Securities if the Reset Date is not an Interest Payment Date). The right to
Early Settlement is subject to there being in effect, if so required under
Federal securities laws, a registration statement covering the shares of Common
Stock to be delivered in respect of the Purchase Contracts being settled (it
being understood that, if so required under Federal securities laws, the Company
shall use commercially reasonable efforts to (1) cause such a registration
statement to become effective and (2) provide a prospectus in connection
therewith, in each case, in a form appropriate for Early Settlements). In order
to exercise the right to effect any such early settlement ("Early Settlement")
with respect to any Purchase Contracts evidenced by this Growth PRIDES
Certificate, the Holder of this Growth PRIDES Certificate shall deliver this
Growth PRIDES Certificate to the Agent at the Corporate Trust Office duly
endorsed for transfer to the Company or in blank with the form of Election to
Settle Early set forth below duly completed and executed and accompanied by
payment payable to the Company in immediately available funds in an amount (the
"Early Settlement Amount") equal to the sum of (i) $25 times the number of
Purchase Contracts being settled, plus (ii) if such delivery is made with
respect to any Purchase Contracts during the period from the close of business
on any Record Date next preceding any Payment Date to the opening of business on
such Payment Date, an amount equal to the Contract Adjustment Payments payable,
if any, on such Payment Date with respect to such Purchase Contracts. Upon Early
Settlement of Purchase Contracts by a Holder of the related Securities, the
Pledged Debt Securities or the Pledged Applicable Ownership Interest in the a
Treasury Portfolio underlying such Securities shall be released from the Pledge
as provided in the Pledge Agreement and the Holder shall be entitled to receive
a number of shares of Common Stock on account of each Purchase Contract forming
part of an Growth PRIDES as to which Early Settlement is effected equal to the
Early Settlement Rate which shall be equal to 0.7396 newly issued shares of
Common Stock per Purchase Contract (the "Early Settlement Rate"); provided
however, that upon the Early Settlement of the Purchase Contracts, (i) the
Holder thereof will forfeit the right to receive any Deferred Contract
Adjustment Payments, if any, on such Purchase Contracts, (ii) the Holder's right
to receive additional Contract Adjustment Payments in respect of such Purchase
Contracts will terminate, and (iii) no adjustment will be made to or for the
Holder on account of Deferred Contract Adjustment Payments, or any amount
accrued in respect of Contract Adjustment Payments. The Early Settlement Rate
shall be adjusted in the same manner and at the same time as the Settlement Rate
is adjusted as provided in the Purchase Contract Agreement.

         Subject to and upon compliance with the provisions of the Purchase
Contract Agreement, if, prior to the Purchase Contract Settlement Date, (i) the
Company merges with or into another entity, (ii) the Common Stock is converted,
exchanged, reclassified or cancelled in such merger, and (iii) at least 30% of
the consideration received by the Company's shareholders for its

                                       B-8

<PAGE>

Common Stock in such merger consists of cash or cash equivalents (a "Cash
Merger"), then each Holder of Securities shall have the right to settle the
Purchase Contract at the Settlement Rate in effect immediately before the Cash
Merger (a "Cash Merger Early Settlement"). The right to Cash Merger Early
Settlement is subject to there being in effect, if so required under Federal
securities laws, a registration statement covering the securities to be
delivered in respect of the Purchase Contracts being settled (it being
understood that, if so required under Federal securities laws, the Company shall
use commercially reasonable efforts to (1) cause such a registration statement
to become effective and (2) provide a prospectus in connection therewith, in
each case, in a form appropriate for Early Settlements). Upon Cash Merger Early
Settlement, (x) the holder's rights to receive Deferred Contract Adjustment
Payments, if any, on the Purchase Contracts being settled will be forfeited, (y)
the holder's right to receive additional Contract Adjustment Payments in respect
of such Purchase Contracts will terminate and (z) no adjustment will be made to
or for the holder on account of Deferred Contract Adjustment Payments, or any
amount accrued in respect of Contract Adjustment Payments. The Company shall
provide each of the Holders with a notice of the consummation of the Cash Merger
within five Business Days after the consummation thereof. Such notice will
specify, among other things, the "Cash Merger Early Settlement Date," which
shall be 10 Business Days after the date of such notice, and the amount of the
cash, securities and other consideration receivable by each Holder upon a Cash
Merger Early Settlement. To exercise a Cash Merger Early Settlement, a Holder
shall deliver, present and surrender the this Growth PRIDES Certificate duly
endorsed for transfer to the Company in blank at the offices of the Agent,
accompanied by payment to the Company in immediately available funds of an
amount equal to (I) $25 multiplied by (II) the number of Purchase Contracts
being settled, plus (III) if such delivery is made with respect to any Purchase
Contracts during the period from the close of business on any Record Date next
preceding any Payment Date to the opening of business on such Payment Date, an
amount equal to the Contract Adjustment Payments payable on such Payment Date
with respect to such Purchase Contracts; provided that no payment is required if
the Company has elected to defer the Contract Adjustment Payments which would
otherwise be payable on the Payment Date, no later than 5:00 p.m., New York City
time, on the Business Day immediately preceding the Cash Merger Early Settlement
Date. Except as provided in the immediately preceding sentence and subject to
the second to last paragraph of Section 5.2 of the Purchase Contract Agreement,
no payment or adjustment shall be made upon Early Settlement of any Purchase
Contract on account of any Contract Adjustment Payments accrued on such Purchase
Contract or on account of any dividends on the Common Stock issued upon such
Early Settlement. Upon a Cash Merger Early Settlement, the Pledged Debt
Securities or the Pledged Applicable Ownership Interest in the a Treasury
Portfolio underlying the Securities being settled shall be released from the
Pledge as provided in the Pledge Agreement and the Company will deliver, or
cause to be delivered, to Holders duly exercising a Cash Merger Early Settlement
on the Cash Merger Early Settlement Date the kind and amount of securities, cash
or other property that such Holders would have been entitled to receive if they
had settled the Purchase Contracts immediately before the Cash Merger at the
Settlement Rate in effect at such time.

         Upon registration of transfer of this Growth PRIDES Certificate, the
transferee shall be bound (without the necessity of any other action on the part
of such transferee, except as may be required by the Agent pursuant to the
Purchase Contract Agreement), under the terms of the Purchase Contract Agreement
and the Purchase Contracts evidenced hereby and the transferor shall be released
from the obligations under the Purchase Contracts evidenced by this Growth

                                       B-9

<PAGE>

PRIDES Certificate. The Company covenants and agrees, and the Holder, by its
acceptance hereof, likewise covenants and agrees, to be bound by the provisions
of this paragraph.

         The Holder of this Growth PRIDES Certificate, by its acceptance hereof,
irrevocably authorizes the Agent to enter into and perform the related Purchase
Contracts forming part of the Growth PRIDES evidenced hereby on its behalf as
its attorney-in-fact, expressly withholds any consent to the assumption (i.e.,
affirmance) of the Purchase Contracts by the Company or its trustee in
bankruptcy, receiver, liquidator or a person or entity performing similar
functions, in the event that the Company becomes the subject of a case under the
Bankruptcy Code or subject to other similar Federal or State law providing for
reorganization or liquidation, agrees to be bound by the terms and provisions
thereof, covenants and agrees to perform its obligations under such Purchase
Contracts, consents to the provisions of the Purchase Contract Agreement,
authorizes the Agent to enter into and perform the Pledge Agreement on its
behalf as its attorney-in-fact, and consents to the Pledge of the Treasury
Securities underlying this Growth PRIDES Certificate pursuant to the Pledge
Agreement. The Holder, by its acceptance hereof, further covenants and agrees,
that, to the extent and in the manner provided in the Purchase Contract
Agreement and the Pledge Agreement, but subject to the terms thereof, payments
in respect to the Stated Amount of the Pledged Treasury Securities on the
Purchase Contract Settlement Date shall be paid by the Collateral Agent to the
Company in satisfaction of such Holder's obligations under such Purchase
Contract and such Holder shall acquire no right, title or interest in such
payments.

         The Holder of this Growth PRIDES Certificate, by its acceptance hereof,
covenants and agrees to treat itself as the owner, for United States federal,
state and local income and franchise tax purposes, of the Treasury Securities
forming part of the Growth PRIDES evidenced hereby.

         Subject to certain exceptions, the provisions of the Purchase Contract
Agreement may be amended with the consent of the Holders of a majority of the
Purchase Contracts. In addition, certain amendments to the Purchase Contract
Agreement may be made without any consent of the Holders as provided in the
Purchase Contract Agreement.

         THE PURCHASE CONTRACTS SHALL FOR ALL PURPOSES BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

         The Company and the Agent and any agent of the Company or the Agent may
treat the Person in whose name this Growth PRIDES Certificate is registered on
the Growth PRIDES Register as the owner of the Growth PRIDES evidenced hereby
for the purpose of receiving payments of interest on the Treasury Securities,
receiving payments of Contract Adjustment Payments and any Deferred Contract
Adjustment Payments, performance of the Purchase Contracts and for all other
purposes whatsoever, whether or not any payments in respect thereof be overdue
and notwithstanding any notice to the contrary, and neither the Company, the
Agent nor any such agent shall be affected by notice to the contrary.

         The Purchase Contracts shall not, prior to the settlement thereof, in
accordance with the Purchase Agreement, entitle the Holder to any of the rights
of a holder of shares of Common Stock.

                                      B-10

<PAGE>

         A copy of the Purchase Contract Agreement is available for inspection
at the offices of the Agent during regular business hours of the Agent.

         Unless the certificate of authentication hereon has been executed by
the Agent by manual signature, this Growth PRIDES Certificate shall not be
entitled to any benefit under the Pledge Agreement or the Purchase Contract
Agreement or be valid or obligatory for any purpose.

                                      B-11

<PAGE>

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

                                        AMERUS GROUP CO.

                                        By:_____________________________________
                                            Name:
                                            Title:

                                        HOLDER SPECIFIED ABOVE (as to
                                        obligations of such Holder under the
                                        Purchase Contracts evidenced hereby)

                                        By: WACHOVIA BANK, NATIONAL
                                            ASSOCIATION,
                                                not individually but solely as
                                                Attorney-in-Fact of such Holder

                                        By:_____________________________________
                                            Name:
                                            Title:

Dated:

                      AGENT'S CERTIFICATE OF AUTHENTICATION

         This is one of the Growth PRIDES Certificates referred to in the within
mentioned Purchase Contract Agreement.

                                        WACHOVIA BANK, NATIONAL
                                            ASSOCIATION,
                                            as Purchase Contract Agent and
                                            Trustee

                                        By:_____________________________________
                                            Authorized Signatory

                                      B-12

<PAGE>

                                  ABBREVIATIONS

         The following abbreviations, when used in the inscription on the face
of this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

TEN COM                                        -    as tenants in common

UNIF GIFT MIN ACT                   -          ----------Custodian--------------
                                               (cust)                   (minor)
                                               Under Uniform Gifts to Minors Act
                                               -------------------------
                                                          (State)

TEN ENT                                        -    as tenants by the entireties

JT TEN                              -          as joint tenants with right of
                                               survivorship and not as tenants
                                               in common

Additional abbreviations may also be used though not in the above list.

         FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto

         (Please insert Social Security or Taxpayer I.D. or other Identifying
Number of Assignee)

         (Please Print or Type Name and Address Including Postal Zip Code of
Assignee)

the within Growth PRIDES Certificate and all rights thereunder, hereby
irrevocably constituting and appointing attorney to transfer said Growth PRIDES
Certificate on the books of AmerUs Group Co. with full power of substitution in
the premises.

Dated:__________________________________________________________________________
                                            Signature

                                        NOTICE: The signature to this assignment
                                        must correspond with the name as it
                                        appears upon the face of the within
                                        Growth PRIDES Certificates in every
                                        particular, without alteration or
                                        enlargement or any change whatsoever.

Signature Guarantee:______________

                                      B-13

<PAGE>

         Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Registrar, which requirements include membership
or participation in the Security Transfer Agent Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.

                                      B-14

<PAGE>

                             SETTLEMENT INSTRUCTIONS

         The undersigned Holder directs that a certificate for shares of Common
Stock deliverable upon settlement on or after the Purchase Contract Settlement
Date of the Purchase Contracts underlying the number of Growth PRIDES evidenced
by this Growth PRIDES Certificate be registered in the name of, and delivered,
together with a check in payment for any fractional share, to the undersigned at
the address indicated below unless a different name and address have been
indicated below. If shares are to be registered in the name of a Person other
than the undersigned, the undersigned will pay any transfer tax payable incident
thereto.

Dated:__________________________________________________________________________
                                            Signature

Signature Guarantee:

         Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Registrar, which requirements include membership
or participation in the Security Transfer Agent Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.

If shares are to be registered in the       REGISTERED HOLDER
name of and delivered to Person other
than the Holder, please print such          Please print name and address of
Person's name and address:                  Registered Holder:

             Name                                             Name

           Address                                          Address

Social Security or other Taxpayer
Identification Number, if any
______________________________________________________

                                      B-15

<PAGE>

                            ELECTION TO SETTLE EARLY

         The undersigned Holder of this Growth PRIDES Certificate hereby
irrevocably exercises the option to effect Early Settlement in accordance with
the terms of the Purchase Contract Agreement with respect to the Purchase
Contracts underlying the number of Growth PRIDES evidenced by this Growth PRIDES
Certificate specified below. The undersigned Holder directs that a certificate
for shares of Common Stock deliverable upon such Early Settlement be registered
in the name of, and delivered, together with a check in payment for any
fractional share and any Growth PRIDES Certificate representing any Growth
PRIDES evidenced hereby as to which Early Settlement of the related Purchase
Contracts is not effected, to the undersigned at the address indicated below
unless a different name and address have been indicated below. Pledged Treasury
Securities deliverable upon such Early Settlement will be transferred in
accordance with the transfer instructions set forth below. If shares are to be
registered in the name of a Person other than the undersigned, the undersigned
will pay any transfer tax payable incident thereto.

Dated:__________________________________________________________________________
                                            Signature

Signature Guarantee:

         Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Registrar, which requirements include membership
or participation in the Security Transfer Agent Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.

         Number of Securities evidenced hereby as to which Early Settlement of
the related Purchase Contracts is being elected:

If shares of Common Stock or Growth         REGISTERED HOLDER
PRIDES Certificates are to be registered
in the name of and delivered to, and
Pledged Treasury Securities are to be
transferred to, a Person other than the
Holder, please print such Person's name
and address:

                                            Please print name and address of
                                            Registered Holder:

             Name                                             Name

           Address                                          Address

                                      B-16

<PAGE>

Social Security or other Taxpayer
Identification Number, if any
_____________________________________________________

                                      B-17

<PAGE>

  Transfer Instructions for Pledged Treasury Securities Transferable Upon Early
                       Settlement or a Termination Event:

                     {TO BE ATTACHED TO GLOBAL CERTIFICATES}

            SCHEDULE OF INCREASES OR DECREASES IN GLOBAL CERTIFICATE

The following increases or decreases in this Global Certificate have been made:

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------
                                                            Principal
                                                          Amount of this
                                                             Global            Signature of
           Amount of decrease      Amount of increase      Certificate      authorized officer
              in Principal         in Principal Amount    following such       of Trustee or
              Amount of the          of the Global          decrease or         Securities
Date       Global Certificate         Certificate            increase           Custodian
-------------------------------------------------------------------------------------------------
<S>        <C>                     <C>                    <C>               <C>

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------

-------------------------------------------------------------------------------------------------
</TABLE>

                                      B-18

<PAGE>

                                    EXHIBIT C

                        NOTICE TO SETTLE BY SEPARATE CASH

Attention:

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

         The undersigned Holder hereby irrevocably notifies you in accordance
with Section 5.4 of the Purchase Contract Agreement, dated as of May 28, 2003
among the Company, yourselves, as Purchase Contract Agent and as
Attorney-in-Fact for the Holders of the Purchase Contracts, that such Holder has
elected to pay to the Collateral Agent, on or 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), $_________ as the Purchase Price
for the shares of Common Stock issuable to such Holder by the Company under the
related Purchase Contract on the Purchase Contract Settlement Date. The
undersigned Holder hereby instructs you to notify promptly the Collateral Agent
of the undersigned Holders election to make such cash settlement with respect to
the Purchase Contracts related to such Holder's (Income PRIDES) (Growth PRIDES).

Dated:__________________________________________________________________________
                                            Signature

Signature Guarantee: ______________

Signatures must be guaranteed by an "eligible guarantor institution" meeting the
requirements of the Registrar, which requirements include membership or
participation in the Security Transfer Agent Medallion Program ("STAMP") or such
other "signature guarantee program" as may be determined by the Registrar in
addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.

Please print name and address of Registered Holder:
________________________________________________________________________________
Name                                        Social Security or other Taxpayer
                                              Identification Number, if any

Address
________________________________________

________________________________________

                                      C-1<PAGE>

================================================================================

                                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

                                PLEDGE AGREEMENT
                            Dated as of May 28, 2003

================================================================================

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                       PAGE NO.
                                                                                                       --------
<S>                                                                                                    <C>
                                    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..............................................................     13

SECTION 4.4           Cash Settlement................................................................     13

SECTION 4.5           Early Settlement...............................................................     15

SECTION 4.6           Application of Proceeds; Settlement............................................     16

                                    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....................................     18

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.................................................     21

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
</TABLE>

                                       i

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                       PAGE NO.
                                                                                                       --------
<S>                                                                                                    <C>
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

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...........................................................     28

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..................................................................     30

SECTION 10.8          Security Interest Absolute.....................................................     30
</TABLE>

                                       ii

<PAGE>

                                PLEDGE AGREEMENT

         PLEDGE AGREEMENT, dated as of May 28, 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, 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 5,750,000 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 5,000,000 units with a stated
amount, per Security, equal to $25 (the "Stated Amount"). The Securities will
initially consist of 5,000,000 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 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, an 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, an 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 July 15, 2006
(CUSIP No. 912820BT3) ("Treasury Security"). Following the maturity of the
Treasury Security on July 15,

<PAGE>

2006, any reference herein to the "Treasury Security" shall be deemed to be a
reference to the cash proceeds therefrom. Pursuant to the terms of the
Underwriting Agreement, the Company may issue up to 750,000 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.

                                      - 2 -

<PAGE>

                  "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.

                  "Business Day" means any day other than a Saturday, a Sunday
or any other day on which banking institutions and trust companies 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
357317) maintained at BNY Midwest Trust Company in the name "Wachovia Bank,
National Association, as Purchase Contract Agent on behalf of the holders of
Securities subject to the security interest of BNY Midwest Trust Company 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, supplemented by an officer's
certificate dated the date hereof establishing the Debt Securities, 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.

                                      - 3 -

<PAGE>

                  "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 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, disposition or maturity 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.

                  "Securities" has the meaning specified in the Recitals.

                                      - 4 -

<PAGE>

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

                  "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 any Remarketing Date that is
not the third Business Day immediately preceding the Purchase Contract
Settlement Date. Value means the Remarketing Treasury Portfolio Purchase Price.

                                   ARTICLE II

                         PLEDGE; CONTROL AND PERFECTION

                                      - 5 -

<PAGE>

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 on a day other than the third Business Day immediately preceding
August 16, 2006 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, to secure the obligations of the Holders to purchase
Common Stock pursuant to the Purchase Contracts. 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." Following the
maturity of the Pledged Treasury Securities on July 15, 2006, the Holders of
Growth PRIDES shall have such interests, rights and obligations, and the
Collateral Agent shall have such security interests, rights and obligations,
with respect to the cash proceeds paid upon maturity of such Pledged Treasury
Securities as they had in respect of the Pledged Treasury Securities, as
provided in II, III, IV, V and VI hereof, and any reference herein to the
Pledged Treasury Securities shall be deemed to be a reference to such

                                      - 6 -

<PAGE>

cash proceeds subject to the Pledge. 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 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 remarketing of the Debt
Securities on a day other than the third Business Day immediately preceding
August 16, 2006, 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 remarketing of the Debt Securities on
a day other than the third Business Day immediately preceding August 16, 2006,
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

                                      - 7 -

<PAGE>

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.

                  (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, cash
distributions or other Proceeds 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); except that in the case of a
payment of interest with respect to the Pledged Debt Securities on a Reset Date
that is not February 16, 2006, May 16, 2006 or August 16, 2006, the Collateral
Agent shall hold such interest amount in a non-interest bearing account and
shall pay such interest amount with the next payment made to the Purchase
Contract Agent pursuant to this clause (a);

                  (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.

                                     - 9 -

<PAGE>

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 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, and (ii) only in integral multiples of 32,000 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
32,000 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

                                     - 10 -

<PAGE>

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

                  (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 $800,000
         (or $25 multiplied by such number of Income PRIDES as may be determined
         by the Reset Agent as described in (ii) above); 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, 32,000 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

                                     - 11 -

<PAGE>

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 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 32,000 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
32,000 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

                                     - 12 -

<PAGE>

                  (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 $800,000 (or $25
         multiplied by such number of Growth PRIDES as may be determined by the
         Reset Agent as described in (ii) above); 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, 32,000 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.

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

                                     - 13 -

<PAGE>

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.

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

                                     - 14 -

<PAGE>

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.

                  (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 5.4 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

                                     - 16 -

<PAGE>

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 Pledged Debt Securities, the Remarketing Agent
will remarket the Pledged Debt Securities pursuant to the terms of the
Remarketing Agreement. After deducting the Remarketing Fee from any amount of
Proceeds of the remarketing in excess of the aggregate Value of such 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 on the third Business Day immediately
preceding the Purchase Contract Settlement Date 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 aggregate Value of the remarketed
Separate Debt Securities, 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 is not successful, 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.

                  (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, except in the event of a successful remarketing that occurs on the
third

                                     - 20 -

<PAGE>

Business Day immediately preceding the Purchase Contract Settlement Date, 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 such substitution, 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 each reference herein to the Pledged Debt Securities shall be
deemed to be a 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
Remarketing Treasury Portfolio Purchase Price, 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.

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

                                     - 21 -

<PAGE>

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 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:

                                     - 22 -

<PAGE>

                  (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 take all reasonable action in
connection with the safekeeping and preservation of the Collateral hereunder.

                                     - 23 -

<PAGE>

                  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.

                  The Collateral Agent shall have no obligation to file UCC
financing statements. Except in the event of the gross negligence, bad faith or
willful misconduct of the Collateral Agent, the Collateral Agent shall not be
responsible for the form, execution, validity, value or genuiness of documents
or securities deposited hereunder, or any description therein, or for the
identity, authority or rights of persons executing or delivering or purporting
to execute or deliver any such document, security or endorsement.

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.

                                     - 24 -

<PAGE>

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
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, claim 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

                                     - 25-

<PAGE>

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 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

                                     - 26 -

<PAGE>

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 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.

                                     - 27 -

<PAGE>

                                   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:

                  (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,

                                     - 28 -

<PAGE>

                  (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.

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 provided with, upon its reasonable request, and
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.

                                     - 29 -

<PAGE>

                                    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.

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).

                                     - 30 -

<PAGE>

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.

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:

                                     - 31 -

<PAGE>

                  (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.

                                     - 32 -

<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: /s/ Roger K. Brooks
                                 -----------------------------------------
                              Name:  Roger K. Brooks
                              Title: Chairman, President and Chief
                                     Executive Officer

                              Address for Notices:

                              AmerUs Group Co.
                              699 Walnut Street
                              Des Moines, Iowa 50309-3948
                              Attention: Melinda Urion, Chief Financial Officer,
                                         with a copy to Joseph K. Haggerty,
                                         Senior Vice President and General
                                         Counsel
                              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: /s/ Shawn K. Bednasek
                                 -----------------------------------------
                              Name:  Shawn K. Bednasek
                              Title: Vice President

                              Address for Notices:

                              401 South Tryon Street, 12th Floor
                              Charlotte, North Carolina 28288-1179
                              Attention: Shawn Bednasek
                              Telecopy:  704-383-7316

                                     - 33 -

<PAGE>

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

                              By:    /s/ Roxane Elwangen
                                  ---------------------------------
                              Name:  Roxane Elwangen
                              Title: Assistant Vice President

                              Address for Notices:

                              BNY Midwest Trust Company
                              2 North LaSalle St., Suite 1020
                              Chicago, Illinois 60602
                              Attention:  Institutional Trust Services
                              Telecopy: (312) 827-8542

                                     - 34 -

<PAGE>

                                                                       EXHIBIT A

          INSTRUCTION FROM PURCHASE CONTRACT AGENT TO COLLATERAL AGENT

BNY MIDWEST TRUST COMPANY, as Collateral Agent
2 North LaSalle St., Suite 1020
Chicago, Illinois 60602
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 28, 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

WACHOVIA BANK, NATIONAL ASSOCIATION
401 South Tryon Street, 12th Floor
Charlotte, North Carolina 28288-1179
Attention:  Corporate Trust Administration

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

                  The undersigned Holder hereby notifies you that it has
delivered to BNY MIDWEST TRUST COMPANY, 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 28, 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 28, 2003 (the "Pledge Agreement"),
among the Company, yourselves, as Collateral Agent, Securities Intermediary and
Custodial Agent, and Wachovia Bank, National Association, 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            B.       DELIVERY INSTRUCTIONS

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

Name(s)                                                       Name(s)

_____________________________________    _______________________________________
           (Please Print)                            (Please Print)

Address                                  Address

_____________________________________    _______________________________________
                                                     (Please Print)
_____________________________________    _______________________________________
         (Please Print)                                (Zip Code)

_____________________________________
           (Zip Code)

                                         _______________________________________
                                                   (Tax Identification or
                                                   Social Security Number)
_____________________________________
   (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

BNY Midwest Trust Company, as Custodial Agent
2 North LaSalle St., Suite 1020
Chicago, Illinois 60602
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 Wachovia Bank, National Association, 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

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