Document:

Purchase Contract Agreement

 EXHIBIT 4.5 

  
 UNUMPROVIDENT CORPORATION 
  
 AND 
  
 JPMORGAN CHASE BANK, 
  
 AS PURCHASE CONTRACT AGENT 
  
 PURCHASE CONTRACT AGREEMENT 
  
 Dated as of May 11, 2004 
  

 TABLE OF CONTENTS 
  

					
	 	  	 	  	Page

	ARTICLE I	  	 
	DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION	  	 
			
	 SECTION 1.1
	  	 Definitions
	  	1
	 SECTION 1.2
	  	 Compliance Certificates and Opinions
	  	17
	 SECTION 1.3
	  	 Form of Documents Delivered to Agent
	  	17
	 SECTION 1.4
	  	 Acts of Holders; Record Dates
	  	18
	 SECTION 1.5
	  	 Notices
	  	20
	 SECTION 1.6
	  	 Notice to Holders; Waiver
	  	21
	 SECTION 1.7
	  	 Effect of Headings and Table of Contents
	  	21
	 SECTION 1.8
	  	 Successors and Assigns
	  	21
	 SECTION 1.9
	  	 Separability Clause
	  	21
	 SECTION 1.10
	  	 Benefits of Agreement
	  	21
	 SECTION 1.11
	  	 Governing Law
	  	22
	 SECTION 1.12
	  	 Legal Holidays
	  	22
	 SECTION 1.13
	  	 Counterparts
	  	22
	 SECTION 1.14
	  	 Inspection of Agreement
	  	23
	 SECTION 1.15
	  	 Appointment of Financial Institution as Agent for the Company
	  	23
	 SECTION 1.16
	  	 No Waiver
	  	23
		
	ARTICLE II	  	 
	CERTIFICATE FORMS	  	 
			
	 SECTION 2.1
	  	 Forms of Certificates Generally
	  	23
	 SECTION 2.2
	  	 Form of Agent’s Certificate of Authentication
	  	26
		
	ARTICLE III	  	 
	THE UNITS	  	 
			
	 SECTION 3.1
	  	 Number of Units; Denominations
	  	26
	 SECTION 3.2
	  	 Rights and Obligations Evidenced by the Certificates
	  	26
	 SECTION 3.3
	  	 Execution, Authentication, Delivery and Dating
	  	27
	 SECTION 3.4
	  	 Temporary Certificates
	  	28
	 SECTION 3.5
	  	 Registration; Registration of Transfer and Exchange
	  	29
	 SECTION 3.6
	  	Removal of Restricted Security Legend; Exchange of Certificates for Beneficial Interests in a Global Certificate	  	31
	 SECTION 3.7
	  	 Book-Entry Interests
	  	32
	 SECTION 3.8
	  	 Notices to Holders
	  	33
	 SECTION 3.9
	  	 Appointment of Successor Clearing Agency
	  	33
	 SECTION 3.10
	  	 Definitive Certificates
	  	34
	 SECTION 3.11
	  	 Mutilated, Destroyed, Lost and Stolen Certificates
	  	34
	 SECTION 3.12
	  	 Persons Deemed Owners
	  	36
	 SECTION 3.13
	  	 Cancellation
	  	36

  

					
	 	  	 	  	Page

	 SECTION 3.14
	  	 Establishment of Stripped Units
	  	37
	 SECTION 3.15
	  	 Reestablishment of Normal Units
	  	38
	 SECTION 3.16
	  	 Transfer of Collateral upon Occurrence of Termination Event
	  	40
	 SECTION 3.17
	  	 No Consent to Assumption
	  	40
	 SECTION 3.18
	  	 CUSIP Numbers
	  	41
	
	ARTICLE IV
	THE NOTES
			
	 SECTION 4.1
	  	 Payment of Interest; Rights to Interest Payments Preserved; Notice
	  	41
	 SECTION 4.2
	  	 Notice and Voting
	  	42
	 SECTION 4.3
	  	 Special Event Redemption
	  	42
	 SECTION 4.4
	  	 Consent to Treatment for Tax Purposes
	  	43
	
	ARTICLE V
	THE PURCHASE CONTRACTS; THE REMARKETING
			
	 SECTION 5.1
	  	 Purchase of Common Stock
	  	43
	 SECTION 5.2
	  	 Contract Adjustment Payments
	  	46
	 SECTION 5.3
	  	 Deferral of Contract Adjustment Payments
	  	52
	 SECTION 5.4
	  	 Payment of Purchase Price; Remarketing
	  	54
	 SECTION 5.5
	  	 Issuance of Shares of Common Stock
	  	59
	 SECTION 5.6
	  	 Adjustment of Settlement Rate
	  	60
	 SECTION 5.7
	  	 Notice of Adjustments and Certain Other Events
	  	67
	 SECTION 5.8
	  	 Termination Event; Notice
	  	68
	 SECTION 5.9
	  	 Early Settlement
	  	68
	 SECTION 5.10
	  	 Early Settlement Upon Cash Merger
	  	70
	 SECTION 5.11
	  	 Charges and Taxes
	  	72
	 SECTION 5.12
	  	 No Fractional Shares
	  	72
		
	ARTICLE VI	  	 
	REMEDIES	  	 
			
	 SECTION 6.1
	  	Unconditional Right of Holders to Receive Purchase Contract Adjustment Payments and Purchase Common Stock	  	73
	 SECTION 6.2
	  	 Restoration of Rights and Remedies
	  	73
	 SECTION 6.3
	  	 Rights and Remedies Cumulative
	  	74
	 SECTION 6.4
	  	 Delay or Omission Not Waiver
	  	74
	 SECTION 6.5
	  	 Undertaking for Costs
	  	74
	 SECTION 6.6
	  	 Waiver of Stay or Extension Laws
	  	74
	 SECTION 6.7
	  	 Liquidated Damages
	  	75
		
	ARTICLE VII	  	 
	THE AGENT	  	 
			
	 SECTION 7.1
	  	 Certain Duties and Responsibilities
	  	75
	 SECTION 7.2
	  	 Notice of Default
	  	76

  

 ii 

					
	 	  	 	  	Page

	 SECTION 7.3
	  	Certain Rights of Agent	  	76
	 SECTION 7.4
	  	Not Responsible for Recitals or Issuance of Units	  	78
	 SECTION 7.5
	  	May Hold Units	  	78
	 SECTION 7.6
	  	Money Held in Custody	  	78
	 SECTION 7.7
	  	Compensation and Reimbursement	  	78
	 SECTION 7.8
	  	Corporate Agent Required; Eligibility	  	79
	 SECTION 7.9
	  	Resignation and Removal; Appointment of Successor	  	79
	 SECTION 7.10
	  	Acceptance of Appointment by Successor	  	81
	 SECTION 7.11
	  	Merger, Conversion, Consolidation or Succession to Business	  	81
	 SECTION 7.12
	  	Preservation of Information	  	82
	 SECTION 7.13
	  	No Obligations of Agent	  	82
	 SECTION 7.14
	  	Tax Compliance	  	82
	
	ARTICLE VIII
	SUPPLEMENTAL AGREEMENTS
			
	 SECTION 8.1
	  	 Supplemental Agreements Without Consent of Holders
	  	83
	 SECTION 8.2
	  	Supplemental Agreements with Consent of Holders	  	83
	 SECTION 8.3
	  	Execution of Supplemental Agreements	  	85
	 SECTION 8.4
	  	Effect of Supplemental Agreements	  	85
	 SECTION 8.5
	  	Reference to Supplemental Agreements	  	85
	
	ARTICLE IX
	CONSOLIDATION, MERGER, SALE OR CONVEYANCE
			
	 SECTION 9.1
	  	 Covenant Not to Merge, Consolidate, Sell or Convey Property Except Under Certain Conditions
	  	85
	 SECTION 9.2
	  	Rights and Duties of Successor Corporation	  	86
	 SECTION 9.3
	  	Opinion of Counsel Given to Agent	  	86
	
	ARTICLE X
	COVENANTS
			
	 SECTION 10.1
	  	 Performance Under Purchase Contracts
	  	87
	 SECTION 10.2
	  	Maintenance of Office or Agency	  	87
	 SECTION 10.3
	  	Company to Reserve Common Stock	  	87
	 SECTION 10.4
	  	Covenants as to Common Stock	  	88
	 SECTION 10.5
	  	Statements of Officer of the Company as to Default	  	88

  
 EXHIBITS 
  

			
	 EXHIBIT A
	  	Form of Normal Units Certificate
	 EXHIBIT B
	  	Form of Stripped Units Certificate
	 EXHIBIT C
	  	Instruction from Purchase Contract Agent to Collateral Agent
	 EXHIBIT D
	  	Instruction to Purchase Contract Agent

  

 iii 

					
	 	  	 	  	Page

	 EXHIBIT E
	  	Notice to Settle by Separate Cash	  	 
	 EXHIBIT F
	  	Form of Transferor’s Certificate	  	 

  

 iv 

 PURCHASE CONTRACT AGREEMENT, dated as of May 11, 2004, between UnumProvident Corporation, a Delaware
corporation (the “Company”), and JPMorgan Chase Bank, a New York banking corporation, acting as purchase contract agent and attorney-in-fact for the Holders of Units from time to time (the “Agent”). 
  
 RECITALS 
  
 The Company has entered into a Subscription Agreement, dated as of May 11, 2004 (the “Subscription Agreement”),
with the subscribers named in Schedule I thereto (the “Subscribers”), subject to the terms and conditions of which the Company has agreed to sell, and the Subscribers have agreed to purchase, an aggregate of 12,000,000 8.25% Adjustable
Conversion-Rate Equity Security Units of the Company (the “Units”). 
  
 The Company has entered into a Registration Rights Agreement, dated as of May 11, 2004 (the “Registration Rights Agreement”), with the several Subscribers, subject to the terms and conditions of which the
Company has agreed to register the Units and the Underlying Securities (as defined herein) constituting such Units, on a Shelf Registration Statement (as defined herein) for resale for the account of the holders of such securities. 
  
 The Company has duly authorized the execution and delivery of this Agreement
and the Certificates evidencing the Units. 
  
 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 to
constitute this Agreement 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 Units 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 generally accepted accounting principles 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): 
  
 “Accounting Event” means the receipt at any time
prior to the earlier of the date of any successful remarketing of the Notes pursuant to the provisions of Section 5.4 and the Stock Purchase Date by the audit committee of the Board of Directors of a written report in accordance with Statement on
Auditing Standards (“SAS”) No. 97, “Amendment to SAS No. 50 – Reports on the Application of Accounting Principles,” from the Company’s independent auditors, provided at the request of the management of the Company, to
the effect that, as a result of a change in accounting rules applicable to the Company after May 1, 2004, the Company must either (a) account for the Purchase Contracts as derivatives under SFAS 133 (or any successor accounting standard) or (b)
account for the Units using the if-converted method under SFAS 128 (or any successor accounting standard), and that such accounting treatment will cease to apply upon redemption of the Notes. 
  
 “Act” when used with respect to any Holder, has
the meaning specified in Section 1.4(a). 
  
 “Affiliate” has the same meaning as given to that term in Rule 405 of the Securities Act or any successor rule thereunder. 
  
 “Agent” means the Person named as the “Agent” in the first paragraph of this Agreement until a successor Agent shall
have become such pursuant to the applicable provisions of this Agreement, and thereafter “Agent” shall mean such Person. 
  
 “Agent Member” means any member of, or participant in, the Depositary. 
  
 “Agent-purchased Treasury Consideration” has the
meaning specified in Section 5.4(b)(i). 
  

 2 

 “Agreement” means this agreement 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 Market Value” has the meaning specified in Section 5.1(c). 
  
 “Applicable Procedures” means, with respect to any
transfer or transaction involving a Global Certificate or beneficial interest therein (including the exchange of a non-global Certificate for a beneficial interest in a Global Certificate), the rules and procedures of the Depositary for such
security, to the extent applicable to such transaction and as in effect from time to time. 
  
 “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 either the Board of Directors of the Company or the executive committee
of such Board of Directors or any other committee of such Board of Directors duly authorized to act generally or in any particular respect for the Board of Directors hereunder. 
  
 “Board Resolution” means (i) a copy of a resolution passed at a meeting or by unanimous written
consent certified by the Secretary or the 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 or (ii) a certificate signed by the authorized
officer or officers to whom the Board of Directors has delegated its authority and, in each case, 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 3.7. 
  
 “Business Day” means any day that is not a Saturday, Sunday or day on which banking institutions and trust companies in The City
of New York or at a place of payment are authorized or required by law, regulation or executive order to close. 
  
 “Capital Stock” means any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents
of or interests in (however 

  

 3 

 
designated, whether voting or non-voting) corporate stock or similar interests in other types of entities. 
  
 “Cash Merger” has the meaning set forth in Section
5.10(a). 
  
 “Cash Merger Date” means
the date on which a Cash Merger is consummated. 
  
 “Cash Settlement” has the meaning set forth in Section 5.4(a). 
  
 “Certificate” means a Normal Units Certificate or a Stripped Units 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 Units and in whose name, or in the name of a nominee of that organization, shall be registered a Global Certificate and which shall
undertake to effect book-entry transfers and pledges of the Units. 
  
 “Clearing Agency Participant” means a broker, dealer, bank, trust company, clearing corporation, 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(c). 
  
 “Collateral” has the meaning specified in Section 2.1(a) of the Pledge Agreement. 
  
 “Collateral Agent” means BNY Midwest Trust
Company, an Illinois 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” has the meaning specified in Section 3.14(a). 
  
 “Common Stock” means the Common Stock, par value $0.10 per share, of the Company. 
  
 “Company” means the Person named as the
“Company” in the first paragraph of this Agreement until a successor shall have become such pursuant to the applicable provisions of this Agreement, and thereafter “Company” shall mean such successor. 
  
 “Constituent Person” has the meaning specified in
Section 5.6(b). 
  

 4 

 “Contract Adjustment Payments” means, in the case of Normal Units and Stripped
Units, the amount payable by the Company in respect of each Purchase Contract constituting a part of such Unit, which amount shall be equal to 3.165% per year of the Stated Amount, in each case computed (i) for any full quarterly period, on the
basis of a 360-day year of twelve 30-day months and (ii) for any period shorter than a full quarterly period, on the basis of a 30-day month, and for periods of less than a month, on the basis of the actual number of days elapsed per 30-day month,
plus any Deferred Contract Adjustment Payments accrued pursuant to Section 5.3. 
  
 “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 4 New York Plaza, New York, New York 10004, Attention: Institutional Trust Services. 
  
 “Coupon Rate” means the percentage rate per annum at which each Note will bear interest initially.

  
 “Current Market Price” has the
meaning specified in Section 5.6(a)(8). 
  
 “Custodial Agent” means BNY Midwest Trust Company, an Illinois trust company, as Custodial Agent under the Pledge Agreement until a successor Custodial Agent shall have become such pursuant to the applicable provisions of the
Pledge Agreement, and thereafter “Custodial Agent” shall mean the Person who is then the Custodial Agent thereunder. 
  
 “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(a). 
  
 “Depositary” means, initially, DTC, until another Clearing Agency becomes its successor. 
  
 “Dividend Threshold Amount” has the meaning specified in Section 5.6(a)(5). 
  
 “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). 
  

 5 

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

  
 “Effective Failure” has the meaning
specified in Section 8(b) of the Registration Rights Agreement. 
  
 “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(f). 
  
 “Expiration Time”
has the meaning specified in Section 5.6(a)(6). 
  
 “Failed Remarketing” has the meaning specified in Section 5.4(b)(ii). 
  
 “Fair Market Value,” with respect to securities distributed in a Spin-Off, means (a) in the case of any Spin-Off that is
effected simultaneously with an Initial Public Offering of such securities, the initial public offering price of those securities and (b) in the case of any other Spin-Off, the average of the Sale Price of those securities over the first ten Trading
Days after the effective date of such Spin-Off. 
  
 “Fifth Supplemental Indenture” means the Fifth Supplemental Indenture, dated as of May 11, 2004, to the Indenture between the Company and the Trustee. 
  
 “Global Certificate” means a certificate that evidences all or part of the Normal Units and/or the
Stripped Units, as applicable, and that is registered in the name of a Depositary or a nominee thereof. 
  
 “Holder” means the Person in whose name the Unit evidenced by a Normal Units Certificate and/or a Stripped Units Certificate is
registered in the related Normal Units Register and/or the Stripped Units Register, as the case may be. 
  
 “Indenture” means the Indenture, dated as of March 9, 2001, between the Company and the Trustee pursuant to which the Notes 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 established as contemplated thereof. 
  
 “Initial Public Offering,” with respect to a Spin-Off, means the first time securities of the same class or type as the securities being distributed in such Spin-Off are bona fide offered to the public for cash. 
  

 6 

 “Issuer Order” or “Issuer Request” means a written order or request
signed in the name of the Company by the Chief Executive Officer, the Chief Financial Officer, the President, any Vice-President, the Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary (or other officer performing similar
functions) of the Company and delivered to the Agent. 
  
 “Last Failed Remarketing” has the meaning specified in Section 5.4(b)(ii). 
  
 “Liquidated Damages” has the meaning specified in Section 8(a) of the Registration Rights Agreement. 
  
 “Merger Early Settlement” has the meaning
specified in Section 5.10(a). 
  
 “Merger
Early Settlement Amount” has the meaning specified in Section 5.10(b). 
  
 “Merger Early Settlement Date” has the meaning specified in Section 5.10(a)(i). 
  
 “Non-electing Share” has the meaning specified in Section 5.6(b). 
  
 “Normal Unit” means the collective rights and obligations of a Holder of a Normal Units
Certificate in respect of a 1/40 undivided beneficial interest in a Note in the original principal amount of $1,000 or the appropriate Treasury Consideration, as the case may be, subject in each case to the Pledge thereof, and the related Purchase
Contract. 
  
 “Normal Units
Certificate” means a certificate evidencing the rights and obligations of a Holder in respect of the number of Normal Units specified on such certificate, substantially in the form of Exhibit A hereto. 
  
 “Normal Units Register” and “Normal Units
Registrar” have the respective meanings specified in Section 3.5(a). 
  
 “Notes” means the 5.085% Senior Notes due 2009 of the Company issued under the Indenture. 
  
 “NYSE” has the meaning specified in Section 5.1(c). 
  
 “Officers’ Certificate” means a certificate signed by the Chief Executive Officer, the Chief
Financial Officer, the President or any Vice-President, and by the Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary (or other officer performing similar functions) of the Company and delivered to the Agent. 
  

 7 

 “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 of the Company and who shall be reasonably acceptable to the Agent. 
  
 “Opt-out Treasury Consideration” has the meaning specified in Section 5.4(b)(iv). 
  
 “Outstanding Units” means, as of the date of
determination, all Normal Units or Stripped Units evidenced by Certificates theretofore authenticated, executed and delivered under this Agreement, except: 
  
 (i) If a Termination Event has occurred, (A) Stripped Units and (B) Normal Units for which the related Notes or the appropriate Treasury
Consideration, as the case may be, has been theretofore deposited with the Agent in trust for the Holders of such Normal Units; 
  
 (ii) Normal Units and Stripped Units 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) Normal Units and Stripped Units 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
protected purchaser in whose hands the Normal Units or Stripped Units evidenced by such Certificate are valid obligations of the Company; 
  
 provided that, in determining whether the Holders of the requisite number of the Normal Units or Stripped Units have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Normal Units or Stripped Units 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 Normal Units or Stripped Units which a Responsible Officer of the Agent knows to be so owned shall be so disregarded. Normal Units
or Stripped Units so owned which have been pledged in good faith may be regarded as Outstanding Units if the pledgee establishes to the satisfaction of the Agent the pledgee’s right so to act with respect to such Normal Units or Stripped Units
and that the pledgee is not the Company or any Affiliate of the Company. 
  
 “Payment Date” means each February 15, May 15, August 15 and November 15, commencing August 15, 2004 and ending on May 15, 2007. 
  

 8 

 “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” means the pledge under the Pledge Agreement of the Notes, the Treasury Securities or the appropriate Treasury
Consideration, in each case constituting a part of the Units, property, cash, securities, financial assets and security entitlements of the Collateral Account (as defined in the Pledge Agreement) and any proceeds of any of the foregoing. 

 
 “Pledge Agreement” means the Pledge Agreement,
dated as of the date hereof, by and among the Company, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Agent, on its own behalf and as attorney-in-fact for the Holders from time to time of the Units. 
  
 “Pledged Notes” has the meaning set forth in
Section 2.1(c) of the Pledge Agreement. 
  
 “Pledged Treasury Consideration” has the meaning set forth in Section 2.1(c) of the Pledge Agreement. 
  
 “Pledged Treasury Securities” has the meaning set forth in Section 2.1(c) of the Pledge Agreement. 
  
 “Predecessor Certificate” means a Predecessor
Normal Units Certificate or a Predecessor Stripped Units Certificate. 
  
 “Predecessor Normal Units Certificate” of any particular Normal Units Certificate means every previous Normal Units Certificate evidencing all or a portion of the rights and obligations of the Company and
the Holder under the Normal Units evidenced thereby; and, for the purposes of this definition, any Normal Units Certificate authenticated and delivered under Section 3.11 in exchange for or in lieu of a mutilated, destroyed, lost or stolen Normal
Units Certificate shall be deemed to evidence the same rights and obligations of the Company and the Holder as the mutilated, destroyed, lost or stolen Normal Units Certificate. 
  
 “Predecessor Stripped Units Certificate” of any particular Stripped Units Certificate means every
previous Stripped Units Certificate evidencing all or a portion of the rights and obligations of the Company and the Holder under the Stripped Units evidenced thereby; and, for the purposes of this definition, any Stripped Units Certificate
authenticated and delivered under Section 3.11 in exchange for or in lieu of a mutilated, destroyed, lost or stolen Stripped Units Certificate shall be deemed to evidence the same rights and obligations of the Company and the Holder as the
mutilated, destroyed, lost or stolen Stripped Units Certificate. 
  

 9 

 “Purchase Contract,” when used with respect to any Unit, means the contract
forming a part of such Unit and obligating the Company to issue and sell and the Holder of such Unit to purchase shares of Common Stock on the terms and subject to the conditions set forth in Article V. 
  
 “Purchase Contract Settlement Fund” has the
meaning specified in Section 5.5. 
  
 “Purchase Price” has the meaning specified in Section 5.1(a). 
  
 “Purchased Shares” has the meaning specified in Section 5.6(a)(6). 
  
 “Quotation Agent” means Goldman, Sachs & Co.
or any of its successors or any other primary U.S. government securities dealer in New York City selected by the Company. 
  
 “Record Date” for the payment of a distribution payable on any Payment Date means, as to any Global Certificate, the Business
Day next preceding such Payment Date, and with respect to definitive Certificates issued pursuant to this Agreement, the 15th calendar day preceding such Payment Date (whether or not a Business Day). 
  
 “Redemption Price” means, for each Note, whether
or not included in a Normal Unit, the product of (i) the principal amount of such Note and (ii) a fraction whose numerator is the applicable Treasury Portfolio Purchase Price and whose denominator is the applicable Special Event Redemption Principal
Amount. 
  
 “Reference Price” has the
meaning specified in Section 5.1(a)(ii). 
  
 “Register” means the Normal Units Register and the Stripped Units Register, as applicable. 
  
 “Registrable Securities” means all or any portion of the Units (including the Underlying Securities comprising such Units)
issued under this Agreement in certificated form; provided, however, that any such security ceases to be a Registrable Security when it is no longer a Restricted Security. 
  
 “Registrar” means the Normal Units Registrar and the Stripped Units Registrar, as applicable.

  
 “Registration Default” has the
meaning specified in Section 8(a) of the Registration Rights Agreement. 
  
 “Registration Rights Agreement” has the meaning specified in the Recitals. 
  

 10 

 “Remarketing Agent” has the meaning specified in Section 5.4(b)(i). 

 
 “Remarketing Agreement” means the Remarketing
Agreement to be entered into by and among the Company, the Remarketing Agent and the Agent. 
  
 “Remarketing Date” means the third Business Day preceding February 15, 2007. 
  
 “Remarketing Fee” has the meaning specified in
Section 5.4(b)(i). 
  
 “Remarketing
Period” means each of (i) the three Business Day period beginning on the Remarketing Date and ending after the two immediately following Business Days; (ii) the three Business Day period immediately preceding April 1, 2007; and (iii) the third
Business Day immediately preceding the Stock Purchase Date. 
  
 “Remarketing Rate” means the percentage rate per year at which each Note will bear interest on and following the Reset Date. 
  
 “Remarketing Value” means, with respect to any Note, the sum of 
  
 (i) the value at the Remarketing Date or any Subsequent
Remarketing Date, as the case may be, of U.S. Treasury securities that will pay, on or prior to the Stock Purchase Date, an amount of cash equal to the interest payment scheduled to be payable on that date on such Note, assuming for that purpose,
even if not true, that the interest rate on such Note is equal to the Coupon Rate, and 
  
 (ii) the value at the Remarketing Date or any Subsequent Remarketing Date, as the case may be, of U.S. Treasury securities that will pay,
on or prior to the Stock Purchase Date, an amount of cash equal to the Stated Amount of such Note; 
  
 provided that, for purposes of clauses (i) and (ii) above, the Remarketing Value shall be calculated on the assumptions that (x) the U.S. Treasury
securities are highly liquid and mature on or within 35 days prior to the Stock Purchase Date, as determined in good faith by the Remarketing Agent in a manner intended to minimize the cash value of the U.S. Treasury securities, and (y) the U.S.
Treasury securities are valued based on the ask-side price of such U.S. Treasury securities at a time between 9:00 a.m. and 11:00 a.m., New York City time, selected by the Remarketing Agent, on the Remarketing Date or any Subsequent Remarketing
Date, as the case may be, as determined on a third-day settlement basis by a reasonable and customary means selected in good faith by the Remarketing Agent, plus accrued interest to that date. 
  
 “Reorganization Event” has the meaning specified
in Section 5.6(b). 
  

 11 

 “Reset Date” means the date following the Remarketing Date or a Subsequent
Remarketing Date, as applicable, on which the trades in a successful remarketing of the Notes, pursuant to the provisions of Section 5.4, settle. 
  
 “Responsible Officer” means, when used with respect to the Agent, any officer within the corporate trust department of the Agent
(or any successor of the Agent), including any Vice-President, any assistant Vice-President, any assistant secretary, the treasurer, any assistant treasurer, any trust officer, any senior trust officer or any other officer of the Agent who
customarily performs functions similar to those performed by the Persons who at the time shall be such officers, respectively, or to whom any corporate trust matter is referred because of such person’s knowledge of and familiarity with the
particular subject and who, in each of the above cases, shall have direct responsibility for the administration of this Agreement. 
  
 “Restricted Security” means all or any portion of the Units except any such Unit that (i) has been effectively registered under
the Securities Act and sold in a manner contemplated by the Shelf Registration Statement, (ii) has been transferred in compliance with Rule 144 under the Securities Act (or any successor provision thereto) or is transferable pursuant to Rule 144(k)
as if it was held by a non-affiliate of the Company (or any successor provision thereto), or (iii) ceases to be outstanding (whether as a result of redemption, repurchase, cancellation or conversion). 
  
 “Restricted Security Legend” means the first
legend in Exhibit A and Exhibit B and placed on a Restricted Security. 
  
 “Rule 144” means Rule 144 under the Securities Act, or any successor provision thereof. 
  
 “Sale Price” of any securities distributed in a
Spin-Off on any Trading Day means the closing sale price per share (or, if no closing sale price is reported, the average of the bid and ask prices, or, if more than one in either case, the average of the average bid and average ask prices) on such
Trading Day as reported in composite transactions for the principal U.S. securities exchange on which such securities are traded, or, if such securities are not listed on a U.S. national or regional securities exchange, as reported by the Nasdaq
Stock Market, or, if such securities are not so reported, the last quoted bid price for such securities in the over-the-counter market as reported by the National Quotation Bureau or similar organization, or, if such bid price is not available, the
market value of such securities on such date as determined by a nationally recognized independent investment banking firm retained by the Company for this purpose. 
  
 “Securities Act” means the Securities Act of 1933 and any statute successor thereto, in each case
as amended from time to time, and the rules and regulations promulgated thereunder. 
  

 12 

 “Securities Intermediary” means BNY Midwest Trust Company, an Illinois trust
company, in its capacity as Securities Intermediary under the Pledge Agreement, together with its successors in such capacity. 
  
 “Senior Indebtedness” means indebtedness of any kind of the Company 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. 
  
 “Separate Notes” has the meaning set forth in the Pledge Agreement. 
  
 “Settlement Date” means any Early Settlement Date
or Merger Early Settlement Date or the Stock Purchase Date. 
  
 “Settlement Rate” has the meaning specified in Section 5.1(a). 
  
 “Shelf Registration Statement” means a registration statement for the registration and resale under Rule 415 under the
Securities Act of the Company’s Units and Underlying Securities for the account of the Subscribers, in accordance with the Registration Rights Agreement. 
  

“Special Event” means either a Tax Event or an Accounting Event. 
  
 “Special Event Redemption” means, if a Special
Event shall occur and be continuing, the redemption of the Notes, at the option of the Company, in whole but not in part, on not less than 30 days’ nor more than 60 days’ prior written notice. 
  
 “Special Event Redemption Date” means the date
upon which a Special Event Redemption is to occur. 
  
 “Special Event Redemption Principal Amount” means (i) in the case of a Special Event Redemption Date occurring prior to a successful remarketing of the Notes pursuant to the provisions of Section 5.4, the aggregate principal
amount of Notes included in Normal Units outstanding on such date, and (ii) in the case of a Special Event Redemption Date occurring after either a successful remarketing of the Notes pursuant to the provisions of Section 5.4 or the Stock Purchase
Date, the aggregate principal amount of the Notes outstanding on such date. 
  
 “Special Event Redemption Treasury Consideration” means, with respect to a Normal Unit, (A) 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 which matures on or prior to the Stock Purchase Date and (B) for each scheduled interest Payment Date on the Notes that occurs after the Special Event Redemption Date and
on or before the Stock Purchase Date, a 0.0318% undivided beneficial ownership interest in a 

  

 13 

 
$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 that interest Payment Date. 
  
 “Spin-Off” means a dividend or other distribution on the Common Stock of shares of Capital Stock of any class or series, or similar equity interests, of or relating to a subsidiary or other business unit of the Company.

  
 “Stated Amount” means, with respect
to any one Normal Unit or Stripped Unit, $25, and, with respect to any one Note, $1,000. 
  
 “Stock Purchase Date” means May 15, 2007. 
  
 “Stripped Unit” means the collective rights and obligations of a Holder of a Stripped Units
Certificate in respect of a 1/40 undivided beneficial interest in a Treasury Security, subject to the Pledge thereof, and the related Purchase Contract. 
  
 “Stripped Units Certificate” means a certificate evidencing the rights and obligations of a Holder in respect of the number of
Stripped Units specified on such certificate, substantially in the form of Exhibit B hereto. 
  
 “Stripped Units Register” and “Stripped Units Registrar” have the respective meanings specified in Section 3.5(a).

  
 “Subscription Agreement” has the
meaning specified in the Recitals. 
  
 “Subsequent Remarketing” has the meaning specified in Section 5.4(b)(ii). 
  
 “Subsequent Remarketing Date” means any date during any Remarketing Period on which the Remarketing Agent attempts a Subsequent
Remarketing in accordance with Section 5.4 hereof. 
  
 “Tax Event” means the receipt by the Company of an opinion of a nationally recognized tax counsel experienced in such matters (which may be Sullivan & Cromwell LLP) to the effect that there is more than an insubstantial risk
that interest payable by the Company on the Notes on the next Payment Date will not be deductible, in whole or in part, by the Company for United States federal income tax purposes, as a result of (a) any amendment to, or change (including any
announced proposed change) in, the laws (or any regulations thereunder) of the United States or any political subdivision or taxing authority thereof or therein affecting taxation, (b) any amendment to or change in an official interpretation or
application of such laws or regulations by any legislative body, court, governmental agency or regulatory authority or (c) any official interpretation, pronouncement or application that provides for a position with respect to such laws or
regulations that differs from the generally accepted 

  

 14 

 
position on May 1, 2004, which amendment, change or proposed change is effective or which interpretation or pronouncement is announced on or after May 1,
2004.  
  
 “Termination Date”
means the date, if any, on which a Termination Event occurs. 
  
 “Termination Event” means the occurrence of any of the following events: 
  
 (i) at any time on or prior to the Stock Purchase Date, a judgment, decree or court order shall have been entered granting relief under
the Bankruptcy Code or any other similar foreign, federal or state law, adjudicating the Company to be insolvent, or approving as properly filed a petition seeking reorganization or liquidation of the Company, and, unless such judgment, decree or
order shall have been entered within 60 days prior to the Stock Purchase Date, such decree or order shall have continued undischarged and unstayed for a period of 60 days; 
  
 (ii) at any time on or prior to the Stock Purchase 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 substantially in its entirety, 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 Stock Purchase 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 Stock Purchase Date,
the Company shall file a petition for relief under the Bankruptcy Code or any other similar foreign, federal or state law, 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 foreign, 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 substantially in its entirety, 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(a)(i). 
  
 “TIA” means the Trust Indenture Act of 1939, and any statute successor thereto, in each case as amended from time to time, and the rules and regulations promulgated thereunder. 
  

 15 

 “Trading Day” has the meaning specified in Section 5.1(c). 
  
 “Treasury Consideration” means the Agent-purchased
Treasury Consideration, the Opt-out Treasury Consideration or the Special Event Redemption Treasury Consideration. 
  
 “Treasury Portfolio” means (i) if a Special Event Redemption occurs prior to a successful remarketing of the Notes pursuant to
the provisions of Section 5.4, a portfolio of (A) zero-coupon U.S. Treasury securities consisting of principal or interest strips of U.S. Treasury securities that mature on or prior to the Stock Purchase Date in an aggregate amount equal to the
applicable Special Event Redemption Principal Amount and (B) with respect to each scheduled interest Payment Date on the Notes that occurs after the Special Event Redemption Date and on or before the Stock Purchase Date, interest or principal strips
of U.S. Treasury securities that mature on or prior to such interest Payment Date in an aggregate amount equal to the aggregate interest payment that would be due on the applicable Special Event Redemption Principal Amount on such date if the
interest rate of the Notes were not reset on the Reset Date, and (ii) solely for purposes of determining the Treasury Portfolio Purchase Price in the case of a Special Event Redemption Date occurring after either of a successful remarketing of the
Notes pursuant to the provisions of Section 5.4, or the Stock Purchase Date, a portfolio of (A) zero-coupon U.S. Treasury securities consisting of principal or interest strips of U.S. Treasury securities that mature on or prior to May 15, 2009 in an
aggregate amount equal to the applicable Special Event Redemption Principal Amount and (B) with respect to each scheduled interest Payment Date on the Notes that occurs after the Special Event Redemption Date and on or before May 15, 2009, interest
or principal strips of U.S. Treasury securities that mature on or prior to such interest Payment Date in an aggregate amount equal to the aggregate interest payment that would be due on the applicable Special Event Redemption Principal Amount.

  
 “Treasury Portfolio Purchase Price”
means the lowest aggregate price quoted by a primary U.S. government securities dealer in New York City to the Quotation Agent on the third Business Day immediately preceding the Special Event Redemption Date for the purchase of the Treasury
Portfolio for settlement on the Special Event Redemption Date. 
  
 “Treasury Security” means a zero-coupon U.S. Treasury security (CUSIP Number 912833GA2) maturing on May 15, 2007 that will pay $1,000 on such maturity date. 
  
 “Trustee” means JPMorgan Chase Bank (formerly
known as The Chase Manhattan Bank), a New York banking corporation, as trustee under the Indenture and the Fifth Supplemental Indenture, or any successor thereto. 
  

 16 

 “Underlying Securities” means the securities constituting the Units, being the
Notes, the Purchase Contracts and the shares of Common Stock issuable pursuant to the terms of the Purchase Contracts. 
  
 “Unit” means a Normal Unit or a Stripped Unit. 
  
 “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.” 
  
 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 an Officers’
Certificate stating that all conditions precedent, if any, provided for in this Agreement relating to the proposed action have been complied with and, if requested by the Agent, an Opinion of Counsel stating that, in the opinion of such counsel,
such action is authorized or permitted by this Agreement and that 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: 
  
 (a) a statement that the individual signing such certificate
or opinion has read such covenant or condition and the definitions herein relating thereto; 
  
 (b) 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; 
  
 (c) a
statement that, in the opinion of 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 
  
 (d) a statement as to whether, in the
opinion of such individual based on his or her knowledge, such condition or covenant has been complied with. 
  
 SECTION 1.3 Form of Documents Delivered to Agent. 
  
 (a) 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 

  

 17 

 
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. 
  
 (b) 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.

  
 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 an 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 Units shall
be proved by the Normal Units Register or the Stripped Units 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 

  

 18 

 
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
Units 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 Units. If any record date is set pursuant to
this paragraph, the Holders of the Outstanding Normal Units and the Outstanding Stripped Units, 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 Normal Units or the
Stripped Units, 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 Units 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 render ineffective any action taken by Holders of the requisite number
of Outstanding Units 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 Units in the manner set forth in Section 1.6. 
  
 (f) 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 Units
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. 
  

 19 

 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: 
  
 (a) 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, mailed, first-class postage prepaid, telecopied or delivered by overnight air courier guaranteeing next day delivery, addressed to and received by the Agent at JPMorgan Chase
Bank, 4 New York Plaza, New York, New York 10004, Attention: Institutional Trust Services, telecopy: (212) 623-6167, or at any other address furnished in writing by the Agent to the Holders and the Company; or 
  
 (b) 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, mailed, first-class postage prepaid, telecopied or delivered by overnight air courier
guaranteeing at least second day delivery, addressed to and received by the Company at UnumProvident Corporation, 1 Fountain Square, Chattanooga, Tennessee 37402, Attention: F. Dean Copeland, Senior Executive Vice President, General Counsel and
Chief Administrative Officer, telecopy: (423) 755-5036, or at any other address furnished in writing to the Agent by the Company; or 
  
 (c) 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, mailed, first-class postage prepaid, telecopied or delivered by overnight air courier guaranteeing next day delivery, addressed to and received by the
Collateral Agent at BNY Midwest Trust Company, 2 North LaSalle Street, Suite 1020, Chicago, Illinois 60602, Attention: Corporate Trust Administration, telecopy: (312) 827-8547, or at any other address furnished in writing by the Collateral Agent to
the Agent, the Company and the Holders; or 
  
 (d) the 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, mailed, first-class postage prepaid,
telecopied or delivered by overnight air courier guaranteeing next day delivery, addressed to and received by the Trustee at JPMorgan Chase Bank 4 New York Plaza, New York, New York 10004, Attention: Institutional Trust Services, telecopy: (212)
623-6167, or at any other address furnished in writing by the Trustee to the Company. 
  

 20 

 SECTION 1.6 Notice to Holders; Waiver. 
  
 (a) 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. 
  
 (b) 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. 
  
 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 1.10 Benefits of Agreement. 
  
 Nothing in this Agreement or in the Units, 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 

  

 21 

 
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 Units evidenced by their Certificates by their acceptance of delivery of such Certificates. 
  
 SECTION 1.11 Governing Law. 
  
 This Agreement and the Units shall be governed by, deemed to be a contract under, and construed in accordance with, the laws of the State of New York.

  
 SECTION 1.12 Legal Holidays. 
  
 (a) In any case where any Payment Date shall not be a
Business Day, then (notwithstanding any other provision of this Agreement or the Normal Units Certificates) payments on the Units shall not be made on such date, but such payments shall be made on the next succeeding day which is a Business Day with
the same force and effect as if made on such Payment Date, provided that no interest shall accrue or be payable by the Company in respect of such payment 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. 
  
 (b) If any date on which Contract Adjustment Payments are to be made on the Purchase Contracts is not a
Business Day, then payment of the Contract Adjustment Payments payable on that date will be made on the next succeeding day which is a Business Day, and no interest or additional payment will be paid in respect of the delay. However, if that
Business Day is in the next succeeding calendar year, the payment will be made on the immediately preceding Business Day with the same force and effect as if made on that Payment Date. 
  
 (c) In any case where the Stock Purchase Date shall not be a Business Day, then (notwithstanding any other
provision of this Agreement or the Certificates) the Purchase Contracts shall not be performed on such date, but the Purchase Contracts shall be performed on the next succeeding day which is a Business Day with the same force and effect as if
performed on the Stock Purchase Date. 
  
 SECTION 1.13
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. 
  

 22 

 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. 
  
 SECTION 1.15 Appointment of Financial Institution as Agent for the Company. 
  
 The Company may appoint a financial institution (which may be the Collateral Agent) to act as its agent in performing its obligations and in accepting and
enforcing performance of the obligations of the Agent and the Holders, under this Agreement and the Purchase Contracts, by giving notice of such appointment in the manner provided in Section 1.5 hereof. Any such appointment shall not relieve the
Company in any way from its obligations hereunder. 
  
 SECTION
1.16 No Waiver. 
  
 No failure on the part of the Company,
the Agent, the Collateral Agent, the Securities Intermediary or any of their respective 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 Company, the Agent, the Collateral Agent, the Securities Intermediary or any of their respective agents of any right, power or remedy hereunder preclude any further exercise thereof or the exercise of
any right, power or remedy. The remedies herein are cumulative and are not exclusive of any remedies provided by law. 
  
 ARTICLE II 
  
 CERTIFICATE FORMS 
  
 SECTION 2.1 Forms of Certificates Generally. 
  
 (a) The Normal Units Certificates (including the form of Purchase Contract forming part of the Normal Units evidenced thereby) on original issuance of the Units on the date hereof shall be in the form of one or more
certificates in definitive, fully registered form, with the Restricted Security Legend and other applicable legends set forth thereon, all in substantially the form set forth in Exhibit A hereto, and, if applicable, with such letters, numbers
or other marks of identification or designation and such further legends or endorsements printed, lithographed or engraved thereon as may be required by the rules of any securities exchange or quotation system on which the Normal Units may be listed
or quoted for trading or any depositary therefor, or as may, consistently herewith, be determined by the officers of the Company executing such Normal Units Certificates, as evidenced by their execution of the Normal Units Certificates. For the
avoidance of doubt, Normal Units will not be issued in 

  

 23 

	 	 
the form of a Global Certificate, except under the circumstances set forth in Section 3.6(b). 

  
 (b) The definitive Normal Units 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 such Normal Units Certificates, consistent with the provisions of this Agreement, as
evidenced by their execution thereof. 
  
 (c) The
Stripped Units Certificates (including the form of Purchase Contracts forming part of the Stripped Units evidenced thereby), when issued, shall be in the form of one or more certificates in definitive, fully registered form, and shall include all
applicable legends all in substantially the form set forth in Exhibit B hereto, and, if applicable, with such letters, numbers or other marks of identification or designation and such further legends or endorsements printed, lithographed or
engraved thereon as may be required by the rules of any securities exchange or the quotation system on which the Stripped Units may be listed or quoted for trading or any depositary therefor, or as may, consistently herewith, be determined by the
officers of the Company executing such Stripped Units Certificates, as evidenced by their execution of the Stripped Units Certificates. For the avoidance of doubt, Stripped Units will not be issued in the form of Global Certificates, except under
the circumstances set forth in Section 3.6(b). 
  
 (d) The definitive Stripped Units 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 such Stripped Units
Certificates, consistent with the provisions of this Agreement, as evidenced by their execution thereof. 
  
 (e) The Certificates (including any security issued upon transfer or exchange thereof pursuant to the provisions of this Agreement), for
so long as they are Restricted Securities, shall be subject to the transfer restrictions set forth under the Restricted Security Legend, and the Holder of such Certificates, by acceptance thereof, agrees to be bound by such transfer restrictions.
Furthermore, in connection with the registration of a transfer by a Holder (other than pursuant to a Shelf Registration Statement as contemplated by Section 3.6) of a Certificate that is a Restricted Security, such Holder shall be required, prior to
such registration of transfer, to furnish to the Company and the Agent a transferor’s certificate in substantially the form set forth in Exhibit F hereto, accompanied by an Opinion of Counsel, addressed to the Company, to the effect that
such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act. The Agent shall not be required to accept for such registration of transfer or registration of
exchange any such Certificate unless the Agent and the Company are satisfied that such transfer or exchange is being effected in compliance with the restrictions on transfer as set 

  

 24 

 
forth in this Agreement and in the Restricted Security Legend. For purposes of the next preceding sentence, the Agent shall be entitled to rely on a
completed Exhibit F as evidence that the restrictions on transfer set forth in the Restricted Security Legend have been complied with. 
  
 (f) Each of the Global Certificates representing the Normal Units or the Stripped Units, as applicable, upon an exchange in accordance
with Section 3.6 hereof, shall be issued in the form of (i) one or more definitive, fully registered Global Certificates representing Normal Units registered initially in the name of the Depositary, or the nominee thereof, and (ii) one or more
definitive, fully registered Global Certificates representing Stripped Units registered initially in the name of the Depositary, or the nominee thereof, and deposited in each case with the Agent, as custodian for the Depositary, for credit by the
Depositary to the respective accounts of beneficial owners of the Normal Units or the Stripped Units, as applicable, represented thereby (or such other accounts as they may direct), in each case (i) and (ii), all as set forth in Section 3.7.

  
 (g) 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 DEFINED ON THE REVERSE HEREOF) 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. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO 

  

 25 

 
ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
  
 UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR CERTIFICATES IN
DEFINITIVE REGISTERED FORM IN THE LIMITED CIRCUMSTANCES REFERRED TO IN THE PURCHASE CONTRACT AGREEMENT, THIS GLOBAL CERTIFICATE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE
DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.” 
  
 SECTION 2.2 Form of Agent’s Certificate of Authentication. 
  
 (a) The form of the Agent’s certificate of
authentication of the Normal Units shall be in substantially the form set forth on the form of the Normal Units Certificates. 
  
 (b) The form of the Agent’s certificate of authentication of the Stripped Units shall be in substantially the form set forth on the
form of the Stripped Units Certificates. 
  
 ARTICLE III

  
 THE UNITS 
  
 SECTION 3.1 Number of Units; Denominations. 
  
 (a) The aggregate number of Normal Units and Stripped Units,
if any, evidenced by Certificates authenticated, executed on behalf of the Holders and delivered hereunder is limited to 12,000,000, except for Certificates authenticated, executed on behalf of the Holder and delivered upon registration of, transfer
of, in exchange for, or in lieu of, other Certificates pursuant to Section 2.1(e), 3.4, 3.5, 3.6, 3.11, 3.14, 3.15, 5.9(e), 5.10(e) or 8.5. 
  
 (b) The Certificates shall be issuable only in registered form and only in denominations of a single Unit and any integral multiple
thereof in such forms as contemplated by the provisions of Section 2.1, as applicable. 
  
 SECTION 3.2 Rights and Obligations Evidenced by the Certificates. 
  
 (a) Each Normal Units Certificate shall evidence the number of Normal Units specified therein, with each such Normal Unit representing the

  

 26 

	 	 
ownership by the Holder thereof of a 1/40 undivided beneficial interest in a Note in the original principal amount of $1,000 or the appropriate Treasury
Consideration, as the case may be, subject to the Pledge of such interest in such Note or the Treasury Consideration, 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 Normal Unit, shall pledge, pursuant to the Pledge Agreement, the interest in such Note or the Treasury Consideration forming a part of such
Normal Unit, to the Collateral Agent and grant to the Collateral Agent a security interest in the right, title, and interest of such Holder in such interest in such Note or Treasury Consideration for the benefit of the Company, to secure the
obligation of such Holder under the related Purchase Contract to purchase shares of Common Stock of the Company. 

  
 (b) Each Stripped Units Certificate shall evidence the number of Stripped Units specified therein, with each such Stripped Unit
representing the ownership by the Holder thereof of a 1/40 undivided beneficial interest in a Treasury Security, subject to the Pledge of such interest in 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 Agent, as attorney-in-fact for, and on behalf of, the Holder of each Stripped Unit, shall pledge, pursuant to the Pledge Agreement, the interest in the Treasury
Security forming a part of such Stripped Unit, to the Collateral Agent and grant to the Collateral Agent a security interest in the right, title, and interest of such Holder in such interest in the Treasury Security for the benefit of the Company,
to secure the obligation of such Holder under the related Purchase Contract to purchase shares of Common Stock of the Company. 
  
 (c) Prior to the purchase of shares of Common Stock under each Purchase Contract, such Purchase Contract shall not entitle the Holder of
the related Units Certificates to any of the rights of a holder of shares of Common Stock, including, without limitation, the right to vote or receive any dividends or other payments or to consent or to receive notice as a stockholder in respect of
the meetings of stockholders or for the election of directors of the Company or for any other matter, or any other rights whatsoever as a stockholder of the Company. 
  
 SECTION 3.3 Execution, Authentication, Delivery and Dating. 
  
 (a) Subject to the provisions of Sections 3.14 and 3.15,
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 and delivery of such Certificates, and the Agent in accordance with such Issuer Order shall authenticate, execute on behalf of the Holders and deliver such Certificates. 
  

 27 

 (b) The Certificates shall be executed on behalf of the Company by the Chief Executive
Officer, the Chief Financial Officer, the President, any Vice-President, the Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary (or other officer performing similar functions) of the Company and delivered to the Agent. The
signature of any of these officers on the Certificates may be manual or facsimile. 
  
 (c) 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. 
  
 (d) 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 officer of the Agent, as such Holder’s attorney-in-fact. Such signature by an authorized officer of the Agent shall be conclusive
evidence that the Holder of such Certificate has entered into the Purchase Contract or Purchase Contracts evidenced by such Certificate. 
  
 (e) Each Certificate shall be dated the date of its authentication. 
  
 (f) 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 officer 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. 
  
 (a) 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 form set forth in Exhibit A or Exhibit B hereto, as the case may be, 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 Normal Units or Stripped Units, as
the case may be, are listed or quoted for trading or any depositary transfer, or as may, consistently herewith, be determined by the officers of the Company executing such Certificates, as evidenced by their execution of the Certificates.

  
 (b) If temporary Certificates are issued, the
Company will cause definitive Certificates to be prepared without unreasonable delay. After the 

  

 28 

 
preparation of definitive Certificates, the temporary Certificates shall be exchangeable for definitive Certificates upon surrender of the temporary
Certificates at the Corporate Trust Office or such other office or agency designated pursuant to Section 10.2 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 Normal Units or Stripped Units, 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 Normal Units or Stripped Units, as the case may be, evidenced thereby as definitive Certificates. 
  
 SECTION 3.5 Registration; Registration of Transfer and Exchange. 
  
 (a) The Agent shall keep at the Corporate Trust Office a register (the register maintained in such office or
in any other office or agency designated pursuant to Section 10.2 being herein referred to as “Normal Units Register”) in which, subject to such reasonable regulations as it may prescribe, the Agent shall provide for the registration of
Normal Units Certificates and of transfers of Normal Units Certificates (the Agent, in such capacity, the “Normal Units Registrar”) and a register (the register maintained in such office or in any other office or agency designated pursuant
to Section 10.2 being herein referred to as the “Stripped Units Register”) in which, subject to such reasonable regulations as it may prescribe, the Agent shall provide for the registration of the Stripped Units Certificates and transfers
of Stripped Units Certificates (the Agent, in such capacity, the “Stripped Units Registrar”). 
  
 (b) Upon surrender for registration of transfer of any Certificate at the Corporate Trust Office or such office or agency designated
pursuant to Section 10.2, 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 one or more new Certificates of like tenor and denominations,
including, if applicable, the Restricted Securities Legend, registered in the name of the designated transferee or transferees, and evidencing a like number of Normal Units or Stripped Units, as the case may be. 
  
 (c) At the option of the Holder, Certificates may be
exchanged for other Certificates, of like tenor, denominations and legends including, if applicable, the Restricted Securities Legend, and evidencing a like number of Normal Units or Stripped Units, as the case may be, upon surrender of the
Certificates to be exchanged at such office or agency. 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 

  

 29 

 
deliver the Certificates which the Holder making the exchange is entitled to receive. 
  
 (d) All Certificates issued upon any registration of transfer or exchange of a Certificate shall evidence
the ownership of the same number of Normal Units or Stripped Units, as the case may be, and be entitled to the same benefits and subject to the same obligations, under this Agreement as the Normal Units or Stripped Units, as the case may be,
evidenced by the Certificate surrendered upon such registration of transfer or exchange. 
  
 (e) 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. 
  
 (f) 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, 3.10 and 8.5 not involving any transfer. 
  
 (g) Notwithstanding the foregoing, the Company shall not be obligated to issue or execute and deliver to the Agent, and the Agent shall
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 earlier of the Stock Purchase
Date or 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 Stock Purchase Date has
occurred, deliver the shares of Common Stock issuable in respect of the Purchase Contracts forming a part of the Units evidenced by such Certificate, 
  
 (ii) in the case of Normal Units, if a Termination Event shall have occurred prior to the Stock Purchase Date, transfer the Notes or the
appropriate Treasury Consideration, as applicable, relating to such Normal Units, or 
  
 (iii) in the case of Stripped Units, if a Termination Event shall have occurred prior to the Stock Purchase Date, transfer the Treasury
Securities relating to such Stripped Units, 

  

 30 

 
in each case subject to the applicable conditions and in accordance with the applicable provisions of Article V. 
  
 SECTION 3.6 Removal of Restricted Security Legend; Exchange of
Certificates for Beneficial Interests in a Global Certificate. 
  
 (a) The transfer restrictions imposed pursuant to the Restricted Securities Legend on any Certificate pursuant to Section 2.1 shall cease and terminate when such Certificate ceases to be a Restricted Security. Any
Certificate as to which such transfer restrictions have terminated may, upon surrender of such Certificate for exchange to the Agent in accordance with its applicable procedures (accompanied, in the event that such restrictions on transfer have
terminated by reason of a transfer pursuant to Rule 144, by an Opinion of Counsel addressed to the Company to the effect that the transfer of such Certificate has been made in compliance with Rule 144), be exchanged for a new Certificate or
Certificates, of like stated amount, which shall not bear the Restricted Securities Legend. If such legend has been removed from a Certificate as provided above, no other Certificate issued in exchange for all or any part of such Certificate that
was a Restricted Security shall bear such legend, unless the Company has reasonable cause to believe that such other Certificate is a “restricted security” within the meaning of Rule 144 and instructs the Agent in writing to cause a legend
to appear thereon. The Company and the Agent shall not be liable for any action taken or omitted to be taken by it in good faith in accordance with the aforementioned Opinion of Counsel. 
  
 (b) Notwithstanding anything to the contrary in this Agreement, if and for so long as the Shelf Registration
Statement is in effect under the Securities Act and the use of the prospectus included therein has not been suspended pursuant to the terms of the Registration Rights Agreement, the Certificates may only be transferred in a transaction covered by
the plan of distribution included in such prospectus. In connection with such a transfer, the transferor shall surrender the Certificate or Certificates as provided in Section 3.6(c), and the transferee thereof shall receive in lieu thereof a
beneficial interest of like tenor and denominations and evidencing a like number of Normal Units or Stripped Units, as the case may be, in the Global Certificate referred to in Section 2.1 evidencing Normal Units or Stripped Units, as the case may
be, which shall not be subject to the transfer restrictions imposed by the Restricted Securities Legend. If at the time of the first such transfer of a Certificate evidencing Normal Units, a Global Certificate evidencing beneficial interests in the
Stripped Units shall not previously have been issued, a Global Certificate shall be issued initially evidencing zero Stripped Units. If at the time of the first such transfer of a Certificate evidencing Stripped Units, a Global Certificate
evidencing beneficial interests in the Normal Units shall not previously have been issued, a Global Certificate shall be issued initially evidencing zero Normal Units. Any such zero balance Global Certificate shall be registered initially in the
name of the Depositary, or a nominee thereof, and shall 

  

 31 

 
be deposited with the Agent, as custodian of the Depositary, for credit by the Depositary to the respective accounts of beneficial owners of the Normal Units
or the Stripped Units, as applicable, represented thereby, pursuant to the provisions hereof. The Company shall give notice to the Agent of the effective date of the Shelf Registration Statement and whether the use of the Prospectus included therein
has been suspended. The Agent shall not be liable for any action taken or omitted to be taken by it in good faith in accordance with the Shelf Registration Statement, or any notice provided pursuant to the next preceding sentence. 
  
 (c) If the Holder of a Certificate wishes at any time to
transfer such Certificate to a person who, pursuant to Section 3.6(b), must take delivery thereof in the form of a beneficial interest in a Global Certificate, such transfer may be effected, subject to the other provisions of this Agreement and the
Applicable Procedures, only in accordance with this Section 3.6(c). A holder wishing to so transfer the Certificate shall notify the Agent sufficiently in advance of, and the Agent shall promptly instruct the Depositary with respect to, such
proposed transfer, as follows: Upon receipt by 
  
 (1) the Depositary of (A) written instructions from the Agent given in accordance with the Applicable Procedures directing the Depositary to credit or cause to be credited to a specified Agent Member’s account a beneficial interest in
the Global Certificate evidencing Normal Units or Stripped Units, as the case may be, equal to the tenor and denominations and number of the Certificate to be so transferred, (B) a written order given in accordance with the Applicable Procedures
containing information regarding the account of the Agent Member to be credited with such beneficial interest and (C) an appropriately completed certificate substantially in the form of Exhibit F hereto, and 
  
 (2) the Agent of (A) the Certificate to be transferred, (B)
notification from the Depositary of the transaction described in (1) above and (C) the certificate described in (l)(C) above, 
  
 the Agent shall cancel the Certificate and instruct the Depositary to increase the tenor and denominations and number of the applicable Global
Certificate, by the tenor and denominations and number of the Certificate so transferred, and to credit or cause to be credited to the account of the person specified in such instructions a corresponding amount of the applicable Global Certificate.

  
 SECTION 3.7 Book-Entry Interests. 
  
 Upon an exchange of a non-global Certificate or non-global Certificates for a
Global Certificate or Global Certificates as described in Section 3.6 above, the Normal Units and the Stripped Units or a portion thereof will be 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 Certificate shall 

  

 32 

 
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 3.10. The Agent shall enter into a customary 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 3.10: 
  
 (a) the provisions of this Section 3.7 shall be in full force and effect; 
  
 (b) the Company and the Agent 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 Units and the sole holder of the Global Certificate(s) and shall have no obligation to the
Beneficial Owners; 
  
 (c) to the extent that the
provisions of this Section 3.7 conflict with any other provisions of this Agreement or any Certificate, the provisions of this Section 3.7 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
and other payments on the Units to such Clearing Agency Participants. 
  
 SECTION 3.8 Notices to Holders. 
  
 Whenever a
notice or other communication to the Holders is required to be given under this Agreement, the Company, the Agent or the Company’s agent shall give such notices and communications to the Holders and, with respect to any Units registered in the
name of a Clearing Agency or the nominee of a Clearing Agency, the Company, the Agent or the Company’s agent shall, except as set forth herein, have no obligations to the Beneficial Owners. 
  
 SECTION 3.9 Appointment of Successor Clearing Agency. 
  
 If any Clearing Agency elects to discontinue its services as securities
depositary with respect to the Units, the Company may, in its sole discretion, appoint a successor Clearing Agency with respect to the Units. 
  

 33 

 SECTION 3.10 Definitive Certificates. 
  
 If, in the case of a Global Certificate or Global Certificates as described
in Section 3.6 above, if 
  
 (i) a Clearing
Agency notifies the Company that it is unwilling or unable to continue its services as securities depositary with respect to the Units and a successor Clearing Agency is not appointed within 90 days after such discontinuance pursuant to Section 3.9,
or 
  
 (ii) the Company, in conjunction with the
Clearing Agency, elects to terminate the book entry system arrangements through the Clearing Agency with respect to the Units, or 
  
 (iii) there shall have occurred and be continuing a default by the Company in respect of its obligations under (x) one or more Purchase
Contracts or (y) the indenture governing the Notes, 
  
 then, upon surrender of
the Global Certificates representing the Book-Entry Interests with respect to the Units 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 and the Agent 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 3.11 Mutilated, Destroyed, Lost and Stolen Certificates.

  
 (a) 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 Normal Units or Stripped Units, as the case may be, and bearing a Certificate number not contemporaneously outstanding. 
  
 (b) 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 to a Responsible Officer of the
Agent that such Certificate has been acquired by a protected 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 Normal Units or Stripped Units, as the case may be, bearing such legends, including a Restricted Security Legend, as applicable, and bearing a Certificate number not
contemporaneously outstanding. 
  

 34 

 (c) Notwithstanding the foregoing, the Company shall not be obligated to execute and
deliver to the Agent, and the Agent shall not be obligated to authenticate, execute on behalf of the Holder, and deliver to the Holder, a Certificate on or after the Business Day immediately preceding the earlier of the Stock Purchase Date or 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 Stock Purchase Date has occurred, deliver the
shares of Common Stock issuable in respect of the Purchase Contracts forming a part of the Units evidenced by such Certificate, bearing such legends, including a Restricted Security Legend, as applicable, 
  
 (ii) in the case of Normal Units, if a Termination Event
shall have occurred prior to the Stock Purchase Date, transfer the Notes or the appropriate Treasury Consideration, as applicable, relating to such Normal Units, bearing such legends, including a Restricted Security Legend, as applicable, or

  
 (iii) in the case of Stripped Units, if a
Termination Event shall have occurred prior to the Stock Purchase Date, transfer the Treasury Securities relating to such Stripped Units, 
  
 in each case subject to the applicable conditions and in accordance with the applicable provisions of Article V. 
  
 (d) Upon the issuance of any new Certificate under this
Section, the Company and the Agent may require the payment by 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. 
  
 (e) 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 Unit evidenced thereby, whether or not
the destroyed, lost or stolen Certificate (and the Units 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. 
  
 (f) 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.

  

 35 

 SECTION 3.12 Persons Deemed Owners. 
  
 (a) 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 Register as the owner of the Units evidenced thereby, for the purpose of receiving quarterly payments on the Notes or Treasury
Consideration, receiving payment of Contract Adjustment Payments, if any, and any Deferred Contract Adjustment Payments, performance of the Purchase Contracts and for all other purposes whatsoever, whether or not any such payments 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. 
  
 (b) 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 of such Global Certificate, 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 a Holder of such Global Certificate. 
  
 SECTION 3.13 Cancellation. 
  
 (a) All Certificates surrendered (i) for delivery of Common Stock on or after any Settlement Date; (ii) upon the transfer of Notes or
Treasury Consideration or Treasury Securities, as the case may be, after the occurrence of a Termination Event or pursuant to an Early Settlement or Merger Early Settlement, or a Collateral Substitution or an establishment or re-establishment of a
Normal Unit; or (iii) upon the registration of a transfer or exchange of a Unit 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 on behalf of the Holder 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 be disposed of by the Agent in accordance with its then customary procedures. 
  

 36 

 (b) 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 3.14 Establishment of Stripped Units. 
  
 (a) A Holder may separate the Pledged Notes or Pledged Treasury Consideration, as applicable, from the related Purchase Contracts in
respect of the Normal Units held by such Holder by substituting for such Pledged Notes or Pledged Treasury Consideration, as the case may be, Treasury Securities that will pay at the Stock Purchase Date an amount equal to the aggregate Stated Amount
of such Normal Units (a “Collateral Substitution”), at any time from and after the date of this Agreement and on or prior to the seventh Business Day immediately preceding the Stock Purchase Date, by (i) depositing with the Collateral
Agent Treasury Securities having an aggregate principal amount equal to the aggregate Stated Amount of such Normal Units, and (ii) transferring the related Normal Units to the Agent accompanied by a notice to the Agent, substantially in the form of
Exhibit D hereto, stating that the Holder has transferred the relevant amount of Treasury Securities to the Collateral Agent and requesting that the Agent instruct the Collateral Agent to release the Pledged Notes or Pledged Treasury
Consideration, as the case may be, underlying such Normal Units, whereupon the Agent shall promptly give such instruction to the Collateral Agent, substantially in the form of Exhibit C hereto. Certificated Normal Units bearing a Restricted
Securities Legend shall, upon separation of the Pledged Notes or Pledged Treasury Consideration, result in the establishment of only certificated Stripped Units bearing such legend and Normal Units in the form of a Global Certificate shall, upon
separation of the Pledged Notes or Pledged Treasury Consideration, result in the establishment of only Stripped Units in the form of a Global Certificate. Notwithstanding the foregoing, a Holder may not separate the Pledged Notes or Pledged Treasury
Consideration from the related Purchase Contracts in respect of the Normal Units held by such Holder during the period beginning on the fourth Business Day prior to the first day of the first or second Remarketing Period and ending on the third
Business Day after the end of such Remarketing Period. Upon receipt of the Treasury Securities described in clause (i) above and the instruction described in clause (ii) above, in accordance with the terms of the Pledge Agreement, the Collateral
Agent will release to the Agent, on behalf of the Holder, such Pledged Notes or Pledged Treasury Consideration from the Pledge, free and clear of the Company’s security interest therein, and upon receipt thereof the Agent shall promptly:

  
 (x) cancel the related Normal Units;

  
 (y) transfer the Pledged Notes or Pledged
Treasury Consideration, as the case may be, to the Holder; and 
  

 37 

 (z) authenticate, execute on behalf of such Holder and deliver a Stripped Units
Certificate executed by the Company in accordance with Section 3.3 evidencing the same number of Purchase Contracts as were evidenced by the cancelled Normal Units. 
  
 (b) Holders who elect to separate the Pledged Notes or Pledged Treasury Consideration, as the case may be,
from the related Purchase Contract and to substitute Treasury Securities for such Pledged Notes or Pledged Treasury Consideration 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. 
  
 (c) Holders may make Collateral Substitutions (i) if Treasury Securities are being substituted for Pledged Notes, only in integral
multiples of 40 Normal Units, or (ii) if the Collateral Substitutions occur after a successful remarketing of the Notes pursuant to the provisions of Section 5.4 or after a Special Event Redemption, as the case may be, only in integral multiples of
Normal Units such that the Treasury Securities to be deposited and the Treasury Consideration to be released are in integral multiples of $1,000. 
  
 (d) In the event a Holder making a Collateral Substitution pursuant to this Section 3.14 fails to effect a book-entry transfer of the
Normal Units or fails to deliver a Normal Units Certificate to the Agent after depositing Treasury Securities with the Collateral Agent, the Pledged Notes or Pledged Treasury Consideration, as the case may be, constituting a part of such Normal
Units, and any distributions on such Pledged Notes or Pledged Treasury Consideration shall be held in the name of the Agent or its nominee in trust for the benefit of such Holder, until such Normal Units are so transferred or the Normal Units
Certificate is so delivered, as the case may be, or, with respect to a Normal Units Certificate, such Holder provides evidence satisfactory to the Company and the Agent that such Normal Units Certificate has been destroyed, lost or stolen, together
with any indemnity that may be required by the Agent and the Company. 
  
 (e) Except as described in this Section 3.14, for so long as the Purchase Contract underlying a Normal Unit remains in effect, such Normal Unit shall not be separable into its constituent parts, and the rights and
obligations of the Holder of such Normal Unit in respect of the Pledged Note or the Pledged Treasury Consideration, as the case may be, and the Purchase Contract comprising such Normal Unit may be acquired, and may be transferred and exchanged, only
as a Normal Unit. 
  
 SECTION 3.15 Reestablishment of Normal
Units. 
  
 (a) A Holder of Stripped Units may
reestablish Normal Units at any time from and after the date of this Agreement and on or prior to the seventh Business Day immediately preceding the Stock Purchase Date, by (i) depositing 

  

 38 

	 	 
with the Collateral Agent Notes in a principal amount or the appropriate Treasury Consideration (identified and calculated by reference to the Treasury
Consideration then comprising Normal Units), as the case may be, then comprising such number of Normal Units as is equal to the number of such Stripped Units and (ii) transferring such Stripped Units to the Agent accompanied by a notice to the
Agent, substantially in the form of Exhibit D hereto, stating that the Holder has transferred the relevant principal amount of Notes or the appropriate Treasury Consideration, as the case may be, to the Collateral Agent and requesting that
the Agent instruct the Collateral Agent to release the Pledged Treasury Securities underlying such Stripped Unit, whereupon the Agent shall promptly give such instruction to the Collateral Agent, substantially in the form of Exhibit C hereto.
Certificated Stripped Units bearing a Restricted Securities Legend shall, upon separation of the Pledged Treasury Security, result in the reestablishment of only certificated Normal Units bearing such legend and Stripped Units in the form of a
Global Certificate shall, upon separation of the Pledged Treasury Security, result in the reestablishment of only Normal Units in the form of a Global Certificate. Notwithstanding the foregoing, a Holder may not reestablish Normal Units during the
period beginning on the fourth Business Day prior to the first day of the first or second Remarketing Period and ending on the third Business Day after the end of such Remarketing Period. Upon receipt of the Notes or the appropriate Treasury
Consideration, as the case may be, described in clause (i) above and the instruction described in clause (ii) above, in accordance with the terms of the Pledge Agreement, the Collateral Agent will release to the Agent, on behalf of the Holder, such
Pledged Treasury Securities from the Pledge, free and clear of the Company’s security interest therein, and upon receipt thereof the Agent shall promptly: 

  
 (x) cancel the related Stripped Units; 
  
 (y) transfer the Pledged Treasury Securities to the Holder; and 
  
 (z) authenticate, execute on behalf of such Holder and
deliver a Normal Units Certificate executed by the Company in accordance with Section 3.3 evidencing the same number of Purchase Contracts as were evidenced by the cancelled Stripped Units. 
  
 (b) Holders of Stripped Units may reestablish Normal Units
(i) if Notes are being substituted for the Pledged Treasury Securities, only in integral multiples of 40 Stripped Units for 40 Normal Units or (ii) if the reestablishment occurs after a successful remarketing of the Notes pursuant to the provisions
of Section 5.4 or after a Special Event Redemption, as the case may be, only in integral multiples of Stripped Units such that the Treasury Consideration to be deposited and the Treasury Securities to be released are in integral multiples of $1,000.

  

 39 

 (c) Except as provided in this Section 3.15, for so long as the Purchase Contract
underlying a Stripped Unit remains in effect, such Stripped Unit shall not be separable into its constituent parts, and the rights and obligations of the Holder of such Stripped Unit in respect of the Pledged Treasury Securities and Purchase
Contract comprising such Stripped Unit may be acquired, and may be transferred and exchanged, only as a Stripped Unit. 
  
 SECTION 3.16 Transfer of Collateral upon Occurrence of Termination Event. 
  
 Upon the occurrence of a Termination Event and the transfer to the Agent of the Notes or the appropriate Treasury
Consideration or the Treasury Securities, as the case may be, underlying the Normal Units and the Stripped Units pursuant to the terms of the Pledge Agreement, the Agent shall request transfer instructions with respect to such Notes or the
appropriate Treasury Consideration 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 Normal Units Register or the Stripped Units Register, as the case may be.
Upon book-entry transfer of the Normal Units or Stripped Units or delivery of a Normal Units Certificate or Stripped Units Certificate to the Agent with such transfer instructions, the Agent shall transfer the Notes, the appropriate Treasury
Consideration or the Treasury Securities underlying such Normal Units or Stripped Units, 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
Normal Units or Stripped Units fails to effect such transfer or delivery, the Notes, the appropriate Treasury Consideration or the Treasury Securities, as the case may be, underlying such Normal Units or Stripped Units, as the case may be, and any
distributions thereon, shall be held in the name of the Agent or its nominee in trust for the benefit of such Holder, until such Normal Units or Stripped Units are transferred or the Normal Units Certificate or Stripped Units Certificate is
surrendered or such Holder provides satisfactory evidence that such Normal Units Certificate or Stripped Units 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 the 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’ Treasury Securities, where such Holder would
otherwise have been entitled to receive less than $1,000 of any such security. 
  
 SECTION 3.17 No Consent to Assumption. 
  
 Each Holder of a Unit, by acceptance thereof, shall be deemed expressly to have withheld any consent to the assumption (i.e., affirmance), under Section 365 of the Bankruptcy Code or otherwise, of the Purchase
Contract by the Company, any receiver, liquidator or person or entity performing similar functions or its trustee in the event that the Company becomes the debtor under the Bankruptcy Code or subject to other similar state or federal law providing
for reorganization or liquidation. 
  

 40 

 SECTION 3.18 CUSIP Numbers. 
  
 The Company in issuing the Units may use “CUSIP” numbers (if then generally in use), and, if so, the Agent shall
use “CUSIP” numbers in notices to Holders as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Units or as contained in
any notice to Holders and that reliance may be placed only on the other identification numbers printed on the Units, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the
Agent of any changes in the “CUSIP” numbers. 
  
 ARTICLE
IV 
  
 THE NOTES 
  
 SECTION 4.1 Payment of Interest; Rights to Interest Payments Preserved;
Notice. 
  
 (a) A payment on any Note or
Treasury Consideration, 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 Normal
Units Certificate (or one or more Predecessor Normal Units Certificates), of which such Note or the appropriate Treasury Consideration is a part, is registered at the close of business on the Record Date for such Payment Date. 
  
 (b) Each Normal Units Certificate evidencing Notes delivered
under this Agreement upon registration of transfer of or in exchange for or in lieu of any other Normal Units Certificate shall carry the rights to interest accrued and unpaid, and rights to accrue interest, which were carried by the Notes
underlying such other Normal Units Certificate. 
  
 (c) In the case of any Normal Unit, with respect to which Early Settlement of the underlying Purchase Contract is effected on an Early Settlement Date, or with respect to which Merger Early Settlement of the underlying Purchase Contract is
effected on a Merger Early Settlement Date, or with respect to which Cash Settlement is effected on the Business Day immediately preceding the Stock Purchase 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, payments on the Note or the appropriate Treasury Consideration, as the case may be, underlying such Normal Unit otherwise payable on such Payment Date shall be
payable on such Payment Date notwithstanding such Early Settlement, Merger Early Settlement, Cash Settlement or Collateral Substitution, as the case may be, and such payments shall, subject to receipt thereof by the Agent, be payable to the Person
in whose name the Normal Units Certificate (or one or more Predecessor Normal Unit Certificates) was 

  

 41 

 
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
Normal Unit with respect to which Early Settlement, Merger Early Settlement or Cash Settlement of the underlying Purchase Contract is effected, or with respect to which a Collateral Substitution has been effected, payments on the related Notes or
payments on the appropriate Treasury Consideration that would otherwise be payable after the applicable Settlement Date or after such Collateral Substitution, as the case may be, shall not be payable hereunder to the Holder of such Normal Unit;
provided that, to the extent that such Holder continues to hold the separated Notes that formerly comprised a part of such Holder’s Normal Units, such Holder shall be entitled to receive any payments on such separated Notes. 

 
 SECTION 4.2 Notice and Voting. 
  
 Under and subject to the terms of the Pledge Agreement and this Agreement,
the Agent will be entitled to exercise the voting and any other consensual rights pertaining to the Pledged Notes but only to the extent instructed by the Holders as described below. Upon receipt of notice of any meeting at which holders of Notes
are entitled to vote or upon any solicitation of consents, waivers or proxies of holders of Notes, the Agent shall, as soon as practicable thereafter, mail to the Holders of Normal Units a notice prepared by the Company at the Company’s expense
(a) containing such information as is contained in the notice or solicitation, (b) stating that each 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 Notes entitled to vote) shall be entitled to instruct the Agent as to the exercise of the voting rights pertaining to the Pledged Notes underlying their Normal Units and (c) stating the manner in which such instructions may be given. Upon
the written request of any Holder of Normal Units 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 request, the maximum number of Pledged Notes
as to which any particular voting instructions are received. In the absence of specific instructions from the Holder of a Normal Unit, the Agent shall abstain from voting the Pledged Note underlying such Normal Unit. The Company hereby agrees, if
applicable, to solicit Holders of Normal Units to timely instruct the Agent in order to enable the Agent to vote such Pledged Notes. 
  
 SECTION 4.3 Special Event Redemption. 
  
 Upon the occurrence of a Special Event Redemption prior to the successful remarketing of the Notes pursuant to the provisions of Section 5.4, the Company
shall instruct in writing the Collateral Agent to apply, and upon such written instruction, the Collateral Agent shall apply, out of the aggregate Redemption Price for the Notes that are components of Normal Units, an amount equal to the Special
Event Redemption Principal Amount to purchase on behalf of the Holders of Normal Units the Treasury Portfolio and promptly remit the remaining portion of such Redemption Price to 

  

 42 

 
the Agent for payment to the Holders of such Normal Units. The Treasury Portfolio will be substituted for the Pledged Notes, and will be pledged to the
Collateral Agent in accordance with the terms of the Pledge Agreement to secure the obligation of each Holder of a Normal Unit to purchase the Common Stock under the Purchase Contract constituting a part of such Normal Unit. Following the occurrence
of a Special Event Redemption prior to a successful remarketing of the Notes pursuant to the provisions of Section 5.4, the Holders of Normal Units and the Collateral Agent shall have such security interests, rights and obligations with respect to
the Treasury Portfolio as the Holder of Normal Units and the Collateral Agent had in respect of the Notes, as the case may be, subject to the Pledge thereof as provided in Articles II, III, IV, V and VI of the Pledge Agreement, and any reference
herein or in the Certificates to the Note shall be deemed to be a reference to such Treasury Portfolio and any reference herein or in the Certificates to interest on the Notes shall be deemed to be a reference to corresponding distributions on the
Treasury Portfolio. The Company may cause to be made in any Normal Unit 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 Treasury Portfolio for
Notes as collateral. 
  
 Upon the occurrence of a Special Event
Redemption after the successful remarketing of the Notes, the Redemption Price will be payable in cash to the holders of the Notes. 
  
 SECTION 4.4 Consent to Treatment for Tax Purposes. 
  
 Each Holder of a Normal Unit or a Stripped Unit, by its acceptance thereof, covenants and agrees to treat itself as the owner, for federal, state and
local income and franchise tax purposes of (i) the related Notes or the appropriate Treasury Consideration, in the case of the Normal Units, or (ii) the Treasury Securities, in the case of the Stripped Units. Each Holder of a Normal Unit, by its
acceptance thereof, further covenants and agrees (i) to treat the Notes as indebtedness of the Company for federal, state and local income and franchise tax purposes and (ii) to allocate 100.00% of the issue price of a Normal Unit to the beneficial
interest in the Note and 0.00% of the issue price to the Purchase Contract.  
  
 ARTICLE V 
  
 THE PURCHASE
CONTRACTS; THE REMARKETING 
  
 SECTION 5.1 Purchase of Common
Stock. 
  
 (a) Each Purchase Contract shall,
unless a Termination Event, an Early Settlement or a Merger Early Settlement shall have occurred prior to the Stock Purchase Date, obligate the Holder of the related Unit to purchase, and the Company to sell, on the Stock Purchase Date at a price
equal to $25 (the “Purchase Price”), a number of validly issued, fully paid and non-assessable 

  

 43 

 
newly issued shares of Common Stock equal to the Settlement Rate. The “Settlement Rate” is equal to, 
  
 (i) if the Applicable Market Value (as defined below) is
equal to or greater than $16.95 (the “Threshold Appreciation Price”), 1.4748 shares of Common Stock per Purchase Contract, 
  
 (ii) if the Applicable Market Value is less than the Threshold Appreciation Price, but is greater than $14.74 (the “Reference
Price”), the number of shares of Common Stock per Purchase Contract equal to the Purchase Price divided by the Applicable Market Value, and 
  
 (iii) if the Applicable Market Value is equal to or less than $14.74, 1.6961 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). 
  
 (b) No fractional shares of Common Stock will be issued by the Company with respect to the payment of Contract Adjustment Payments on the Stock Purchase Date. In lieu of fractional shares otherwise issuable with
respect to such payment of Contract Adjustment Payments, the Holder will be entitled to receive an amount in cash as provided in Section 5.12. 
  
 (c) 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 Stock Purchase Date or, in the event of a Cash Merger, the Cash Merger Date, or, in the event of an Early Settlement, the Early Settlement Date. The “Closing Price” of
the Common Stock on any date of determination means the closing sale price (or, if no closing sale 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 securities exchange on which the Common Stock is so listed, or if the Common Stock is not so listed on a
United States securities exchange, 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, or, if such bid price is not available, the market value of the Common Stock on such date as determined by a nationally recognized independent investment banking firm retained for this purpose by the Company. 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 

  

 44 

 
over-the-counter market that is the primary market for the trading of the Common Stock at the close of business on such day. 
  
 (d) Each Holder of a Unit, 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 Contract, consents to the provisions hereof, irrevocably authorizes the Agent as its attorney-in-fact 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 Notes, the appropriate Treasury Consideration or the Treasury Securities pursuant to the Pledge Agreement; provided that upon a Termination Event, the rights of the
Holder of such Unit under the Purchase Contract may be enforced without regard to any other rights or obligations. Each Holder of a Unit, 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 Pledged Notes, the Pledged Treasury Consideration or the Pledged Treasury Securities to be paid upon settlement of such Holder’s obligations to
purchase shares of Common Stock under the Purchase Contract, shall be paid on the Stock Purchase Date 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. 
  
 (e) 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) 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 Certificate 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. 
  
 (f) Settlement of a Purchase Contract that has not been transferred pursuant to the plan of distribution included in the Shelf
Registration Statement that has been declared effective under the Securities Act (and that continues to be effective at the time of such transfer) shall be settled by the issuance of shares of Common Stock bearing a Restricted Security Legend unless
(i) the Company determines, based upon an Opinion of Counsel, that such shares do not require a Restricted Securities Legend or (ii) the holder of such Common Stock delivers an Opinion of Counsel addressed to the Company that such Common Stock is
not a “restricted security” within the meaning of Rule 144. The transfer restrictions imposed pursuant to the Restricted Securities Legend on any shares of Common Stock shall cease and terminate when such shares cease to be Restricted
Securities. Any shares as to which such transfer restrictions have terminated may, 

  

 45 

 
upon surrender of such shares, for exchange to the Company (accompanied, in the event that such restrictions on transfer have terminated by reason of a
transfer pursuant to Rule 144, by an Opinion of Counsel addressed to the Company to the effect that the transfer of such Certificate has been made in compliance with Rule 144), be exchanged for new shares, of like number, which shall not bear the
Restricted Securities Legend. With respect to shares of Common Stock issued upon settlement that are restricted under the Securities Act, any deliveries that would have to be made to the Purchase Contract Agent shall be made to the transfer agent
for the Common Stock. 
  
 SECTION 5.2 Contract Adjustment
Payments. 
  
 (a) Subject to Section 5.3, the
Company shall pay, on each Payment Date, the Contract Adjustment Payments, if any, 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 in such coin or currency of the United States as at the time of payment shall be legal tender for payments. The Contract Adjustment Payments, if any, 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 Register or by wire transfer to the account maintained in the United States
designated by a prior written notice by such Person. Contract Adjustment Payments shall accrue from May 11, 2004 or from the most recent Payment Date to which Contract Adjustment Payments have been paid or duly provided for. 
  
 (b) Upon the occurrence of a Termination Event, the
Company’s obligation to pay Contract Adjustment Payments (including any accrued and unpaid Deferred Contract Adjustment Payments), if any, shall cease. 
  
 (c) 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 a Normal Unit) shall carry the rights to receive Contract Adjustment Payments (including any accrued and unpaid Deferred Contract Adjustment Payments), if
any, and to accrue Contract Adjustment Payments, if any, which were carried by the Purchase Contracts underlying such other Certificates. 
  
 (d) Subject to Sections 5.4, 5.9 and 5.10, in the case of any Unit with respect to which Early Settlement or Merger Early Settlement of
the underlying Purchase Contract is effected on an Early Settlement Date or a Merger Early Settlement Date, respectively, or in respect of which Cash Settlement of the underlying Purchase Contract is effected on the Business Day immediately
preceding the Stock Purchase Date, or with respect to which a Collateral 

  

 46 

 
Substitution or an establishment or re-establishment of a Normal Unit pursuant to Section 3.15 is effected, in each case on a date that is after any Record
Date and on or prior to the next succeeding Payment Date, Contract Adjustment Payments on the Purchase Contract underlying such Unit otherwise payable on such Payment Date shall be payable on such Payment Date notwithstanding such Cash Settlement,
Early Settlement, Merger Early Settlement, Collateral Substitution or establishment or re-establishment of Normal Units, 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 Unit (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 Unit with
respect to which Early Settlement or Merger Early Settlement or Cash Settlement of the underlying Purchase Contract is effected on an Early Settlement Date or Merger Early Settlement Date or on the Business Day immediately preceding the Stock
Purchase Date, as the case may be, or with respect to which a Collateral Substitution or an establishment or re-establishment of a Normal Unit has been effected, Contract Adjustment Payments, if any, that would otherwise be payable after the Early
Settlement Date, or Merger Early Settlement Date, Collateral Substitution or such establishment or re-establishment with respect to such Purchase Contract shall not be payable. 
  
 (e) 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 to the extent set forth in Section 5.2(f). 
  
 (f) Subject to the provisions of Section 5.8, in the event
(x) of any payment by, or distribution of assets of, the Company of any kind or character, whether in cash, property or securities, to creditors upon any dissolution, winding-up, liquidation or reorganization of the Company, whether voluntary or
involuntary or in bankruptcy, insolvency, receivership or other proceedings, or (y) subject to the provisions of Section 5.2(h) below, that (i) a default shall have occurred and be continuing with respect to the payment of principal, interest or any
other monetary amounts due and payable on any Senior Indebtedness and such default shall have continued beyond the period of grace, if any, specified in the instrument evidencing such Senior Indebtedness (and the Agent shall have received written
notice thereof from the Company or one or more holders of Senior Indebtedness or their representative or representatives or the trustee or trustees under any indenture pursuant to which any such Senior Indebtedness may have been issued), or (ii) the
maturity of any Senior Indebtedness shall have been accelerated because of a default in respect of such Senior Indebtedness (and the Agent shall have received written notice thereof from the Company or one or more holders of Senior Indebtedness or
their representative or representatives or the trustee or trustees under any indenture pursuant to which any such Senior Indebtedness may have been issued), then: 
  
 (i) the holders of all Senior Indebtedness shall first be entitled to receive, in the case of clause (x)
above, payment in full of all amounts due or to become due upon all Senior Indebtedness and, in the case of subclauses (i) and (ii) of clause (y) above, payment of all amounts due thereon, or provision shall be made for such payment in money or
money’s worth, before the Holders of any of the Units are entitled to receive any Contract Adjustment Payments on the Purchase Contracts underlying the Units; 
  

 47 

 (ii) any payment by, or distribution of assets of, the Company of any kind or character,
whether in cash, property or securities, to which the Holders of any of the Units would be entitled except for the provisions of Sections 5.2(e) through (q), including any such payment or distribution which may be payable or deliverable by reason of
the payment of any other indebtedness of the Company being subordinated to the payment of such Contract Adjustment Payments on the Purchase Contracts underlying the Units, shall be paid or delivered by the Person making such payment or distribution,
whether a trustee in bankruptcy, a receiver or liquidating trustee or otherwise, directly to the holders of such Senior Indebtedness or their representative or representatives or to the trustee or trustees under any indenture under which any
instruments evidencing any of such Senior Indebtedness may have been issued, ratably according to the aggregate amounts remaining unpaid on account of such Senior Indebtedness held or represented by each, to the extent necessary to make payment in
full of all Senior Indebtedness remaining unpaid after giving effect to any concurrent payment or distribution (or provision therefor) to the holders of such Senior Indebtedness, before any payment or distribution is made of such Contract Adjustment
Payments to the Holders of such Units; and 
  
 (iii) in the event that, notwithstanding the foregoing, any payment by, or distribution of assets of, the Company of any kind or character, whether in cash, property or securities, including any such payment or distribution which may be
payable or deliverable by reason of the payment of any other indebtedness of the Company being subordinated to the payment of Contract Adjustment Payments on the Purchase Contracts underlying the Units, shall be received by the Agent or the Holders
of any of the Units when such payment or distribution is prohibited pursuant to Sections 5.2(e) through (q), such payment or distribution shall be paid over to the holders of such Senior Indebtedness or their representative or representatives or to
the trustee or trustees under any indenture pursuant to which any instruments evidencing any such Senior Indebtedness may have been issued, ratably as aforesaid, for application to the payment of all Senior Indebtedness remaining unpaid until all
such Senior Indebtedness shall have been paid in full, after giving 

  

 48 

 
effect to any concurrent payment or distribution (or provision therefor) to the holders of such Senior Indebtedness. 
  
 (g) For purposes of Sections 5.2(e) through (q), the words
“cash, property or securities” shall not be deemed to include shares of stock of the Company as reorganized or readjusted, or securities of the Company or any other Person provided for by a plan of reorganization or readjustment, the
payment of which is subordinated at least to the extent provided in Sections 5.2(e) through (q) with respect to such Contract Adjustment Payments on the Units to the payment of all Senior Indebtedness which may at the time be outstanding;
provided that (i) the indebtedness or guarantee of indebtedness, as the case may be, that constitutes Senior Indebtedness is assumed by the Person, if any, resulting from any such reorganization or readjustment, and (ii) the rights of the
holders of the Senior Indebtedness are not, without the consent of each such holder adversely affected thereby, altered by such reorganization or readjustment. 
  

(h) Any failure by the Company to make any payment on or perform any other obligation under Senior Indebtedness, other than any
indebtedness incurred by the Company or assumed or guaranteed, directly or indirectly, by the Company for money borrowed (or any deferral, renewal, extension or refunding thereof) or any indebtedness or obligation as to which the provisions of
Sections 5.2(e) through (g) shall have been waived by the Company in the instrument or instruments by which the Company incurred, assumed, guaranteed or otherwise created such indebtedness or obligation, shall not be deemed a default or event of
default if (i) the Company shall be disputing its obligation to make such payment or perform such obligation and (ii) either (A) no final judgment relating to such dispute shall have been issued against the Company which is in full force and effect
and is not subject to further review, including a judgment that has become final by reason of the expiration of the time within which a party may seek further appeal or review, and (B) in the event a judgment that is subject to further review or
appeal has been issued, the Company shall in good faith be prosecuting an appeal or other proceeding for review and a stay of execution shall have been obtained pending such appeal or review. 
  
 (i) Subject to the payment in full of all Senior
Indebtedness, the Holders of the Purchase Contracts underlying the Units shall be subrogated (equally and ratably with the holders of all obligations of the Company which by their express terms are subordinated to Senior Indebtedness of the Company
to the same extent as payment of the Contract Adjustment Payments in respect of the Purchase Contracts underlying the Units is subordinated and which are entitled to like rights of subrogation) to the rights of the holders of Senior Indebtedness to
receive payments or distributions of cash, property or securities of the Company applicable to the Senior Indebtedness until all such Contract Adjustment Payments owing on the Purchase Contracts underlying the Units shall be paid in full, and as
between the Company, its creditors other than holders of such Senior 

  

 49 

 
Indebtedness and the Holders, no such payment or distribution made to the holders of Senior Indebtedness by virtue of Sections 5.2(e) through (q) that
otherwise would have been made to the Holders shall be deemed to be a payment by the Company on account of such Senior Indebtedness, it being understood that the provisions of Sections 5.2(e) through (q) are and are intended solely for the purpose
of defining the relative rights of the Holders, on the one hand, and the holders of Senior Indebtedness, on the other hand. 
  
 (j) Nothing contained in Sections 5.2(e) through (q) or elsewhere in this Agreement or in the Units is intended to or shall impair, as
among the Company, its creditors other than the holders of Senior Indebtedness and the Holders, the obligation of the Company, which, subject to the occurrence of a Termination Event as described in Section 5.2(b) and the Company’s right
pursuant to Section 5.3 to defer Contract Adjustment Payments, is absolute and unconditional, to pay to the Holders such Contract Adjustment Payments on the Purchase Contracts underlying the Units as and when the same shall become due and payable in
accordance with their terms, or is intended to or shall affect the relative rights of the Holders and creditors of the Company other than the holders of Senior Indebtedness, nor shall anything herein or therein prevent the Agent or any Holder from
exercising all remedies otherwise permitted by applicable law upon default under this Agreement, subject to the rights, if any, under these Sections 5.2(e) through (q), of the holders of Senior Indebtedness in respect of cash, property or securities
of the Company received upon the exercise of any such remedy. 
  
 (k) Upon payment or distribution of assets of the Company referred to in these Sections 5.2(e) through (q), the Agent and the Holders shall be entitled to rely upon any order or decree made by any court of competent
jurisdiction in which any such dissolution, winding up, liquidation or reorganization proceeding affecting the affairs of the Company is pending or upon a certificate of the trustee in bankruptcy, receiver, assignee for the benefit of creditors,
liquidating trustee or agent or other Person making any payment or distribution, delivered to the Agent or to the Holders, for the purpose of ascertaining the Persons entitled to participate in such payment or distribution, the holders of the Senior
Indebtedness and other indebtedness of the Company, the amount thereof or payable thereon, the amount or amounts paid or distributed thereon and all other facts pertinent thereto or to these Sections 5.2(e) through (q). 
  
 (l) The Agent shall be entitled to rely on the delivery to
it of a written notice by a Person representing himself to be a holder of Senior Indebtedness (or a trustee or representative on behalf of such holder) to establish that such notice has been given by a holder of Senior Indebtedness or a trustee or
representative on behalf of any such holder or holders. In the event that the Agent determines in good faith that further evidence is required with respect to the right of any Person as a holder of Senior Indebtedness to participate in any payment
or distribution 

  

 50 

 
pursuant to Sections 5.2(e) through (q), the Agent may request such Person to furnish evidence to the reasonable satisfaction of the Agent as to the amount
of Senior Indebtedness held by such Person, the extent to which such Person is entitled to participate in such payment or distribution and any other facts pertinent to the rights of such Person under Sections 5.2(e) through (q), and, if such
evidence is not furnished, the Agent may defer payment to such Person pending judicial determination as to the right of such Person to receive such payment. 
  
 (m) Nothing contained in Sections 5.2(e) through (q) shall affect the obligations of the Company to make, or prevent the Company from
making, payment of the Contract Adjustment Payments, except as provided in these Sections 5.2(e) through (q). 
  
 (n) Each Holder of Units, by his acceptance thereof, authorizes and directs the Agent on his, her or its behalf to take such action as may
be necessary or appropriate to effectuate the subordination provided in Sections 5.2(e) through (q) and appoints the Agent his, her or its attorney-in-fact, as the case may be, for any and all such purposes. 
  
 (o) The Company shall give prompt written notice to the
Agent of any fact known to the Company that would prohibit the making of any payment of moneys to or by the Agent in respect of the Purchase Contracts underlying the Units pursuant to the provisions of this Section 5.2. Notwithstanding the
provisions of Sections 5.2(e) through (q) or any other provisions of this Agreement, the Agent shall not be charged with knowledge of the existence of any facts that would prohibit the making of any payment of moneys to or by the Agent, or the
taking of any other action by the Agent, unless and until the Agent shall have received written notice thereof mailed or delivered to a Responsible Officer of the Agent from the Company, any Holder, any paying agent or the holder or representative
of any Senior Indebtedness; provided that, if at least two Business Days prior to the date upon which by the terms hereof any such moneys may become payable for any purpose, the Agent shall not have received with respect to such moneys the
notice provided for in this Section 5.2(o), then, anything herein contained to the contrary notwithstanding, the Agent shall have full power and authority to receive such moneys and to apply the same to the purpose for which they were received and
shall not be affected by any notice to the contrary that may be received by it within two Business Days prior to or on or after such date. 
  
 (p) The Agent in its individual capacity shall be entitled to all the rights set forth in this Section 5.2 with respect to any Senior
Indebtedness at the time held by it, to the same extent as any other holder of Senior Indebtedness and nothing in this Agreement shall deprive the Agent of any of its rights as such holder. 
  

 51 

 (q) No right of any present or future holder of any Senior Indebtedness to enforce the
subordination herein shall at any time or in any way be prejudiced or impaired by any act or failure to act on the part of the Company or by any noncompliance by the Company with the terms, provisions and covenants of this Agreement, regardless of
any knowledge thereof which any such holder may have or be otherwise charged with. 
  
 (r) Nothing in this Section 5.2 shall apply to claims of, or payments to, the Agent under or pursuant to Section 7.7 hereof. 

 
 With respect to the holders of Senior Indebtedness, (i) the duties and obligations of the
Agent shall be determined solely by the express provisions of this Agreement; (ii) the Agent shall not be liable except for the performance of such duties and obligations as are specifically set forth in this Agreement; (iii) no implied covenants or
obligations shall be read into this Agreement against the Agent; and (iv) the Agent shall not be deemed to be a fiduciary as to such holders. 
  
 SECTION 5.3 Deferral of Contract Adjustment Payments. 
  
 (a) The Company shall have the right, at any time prior to the Stock Purchase 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 each such deferred Contract Adjustment 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 Units, but in any event not less than one Business Day prior to such Record Date. Any Contract Adjustment Payments so deferred shall, to the extent permitted by law, accrue
additional Contract Adjustment Payments thereon at the rate of 8.25% per year (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, if any, 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 this Section 5.3. No Contract Adjustment Payments may be deferred to a date that is after the Settlement Date and no such deferral period may end
other than on a Payment Date. If the Purchase Contracts are terminated upon the occurrence of a Termination Event, the Holder’s right to receive Contract Adjustment Payments, if any, and any Deferred Contract Adjustment Payments, will
terminate. 
  

 52 

 (b) In the event that the Company elects to defer the payment of Contract Adjustment
Payments on the Purchase Contracts until a Payment Date prior to the Stock Purchase Date, then all Deferred Contract Adjustment Payments, if any, shall be payable to the registered Holders as of the close of business on the Record Date immediately
preceding such Payment Date. 
  
 (c) In the event
that the Company elects to defer the payment of Contract Adjustment Payments on the Purchase Contracts until the Stock Purchase Date, each Holder will receive on the Stock Purchase 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 (A) the aggregate amount of Deferred Contract Adjustment Payments payable to such Holder (net of any required tax withholding on such Deferred Contract
Adjustment Payment, which shall be remitted to the appropriate taxing jurisdiction) divided by (B) the Applicable Market Value. 
  
 (d) No fractional shares of Common Stock will be issued by the Company with respect to the payment of Deferred Contract Adjustment
Payments on the Stock Purchase 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 5.12.

  
 (e) In the event the Company exercises its
option to defer the payment of Contract Adjustment Payments then, until the earlier of (x) the Termination Date or (y) the date on which the Deferred Contract Adjustment Payments have been paid, the Company shall not 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 other than: 
  
 (i) repurchases, redemptions or acquisitions of shares of Capital Stock of 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 share purchase or dividend reinvestment plan, or the satisfaction by the Company of its obligations pursuant
to any contract or security outstanding on the date the Company exercises its right to defer the payment of Contract Adjustment Payments; 
  
 (ii) as a result of a reclassification of the Company’s Capital Stock or the exchange or conversion 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 of the Company’s Capital Stock pursuant to the conversion or exchange provisions of such
Capital Stock or the security being converted or exchanged; 
  

 53 

 (iv) dividends or distributions in the Company’s Capital Stock (or rights to acquire
the Company’s Capital Stock) or repurchases, acquisitions or redemptions of the Company’s Capital Stock in exchange for or out of the net cash proceeds of the sale of the Company’s Capital Stock (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 stockholder rights plan or the declaration or payment thereunder of a dividend or distribution of or with respect to rights in the future, or
the redemption or repurchase of any rights pursuant thereto. 
  
 SECTION 5.4 Payment of Purchase Price; Remarketing. 
  
 (a) Unless a Special Event Redemption, successful remarketing of the Notes pursuant to the provisions of this Section 5.4 or Termination Event has occurred, or a Holder of a Unit has settled the underlying Purchase
Contract through an Early Settlement pursuant to Section 5.9 or a Merger Early Settlement pursuant to Section 5.10, each Holder of a Normal Unit may pay in cash (“Cash Settlement”) the Purchase Price for the shares of Common Stock to be
purchased pursuant to a Purchase Contract if such Holder notifies the Agent by surrender of the Normal Unit Certificate and delivery of a notice in substantially the form of Exhibit E hereto of its intention to make a Cash Settlement. Such
notice shall be made on or prior to 5:00 p.m., New York City time, on the seventh Business Day immediately preceding the Stock Purchase 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. 
  
 (i) A
Holder of a Normal Unit 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
Stock Purchase Date in lawful money of the United States by certified or cashier’s 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 paid to the Company on the Stock Purchase Date in settlement of the Purchase Contract in accordance with the terms of this Agreement and the Pledge Agreement. 
  
 (ii) If a Holder of a Normal Unit fails to notify the Agent of its intention to make a Cash Settlement in
accordance with paragraph (a)(i) above, the Holder shall be deemed to have consented to the disposition of the Pledged Notes pursuant to the remarketing as described in paragraph (b) below. If a Holder of a Normal Unit does notify the Agent as
provided in paragraph (a)(i) above of its intention to pay the Purchase 

  

 54 

 
Price in cash, but fails to make such payment as required by paragraph (a)(i) above, such failure shall constitute an event of default; however, the Notes 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 Notes, including but not limited to those rights specified in subsection (b)(iii)
below. 
  
 (b) (i) Unless a Special Event
Redemption has occurred, the Company shall engage, no later than 30 days prior to the Remarketing Date, a nationally recognized investment bank (the “Remarketing Agent”) pursuant to a Remarketing Agreement to be mutually agreed on by the
Company, the Agent and the Remarketing Agent, but providing for remarketing procedures substantially as set forth below to sell the Notes of Holders of Normal Units, other than Holders that have elected not to participate in the remarketing pursuant
to the procedures set forth in clause (iv) below, and holders of Separate Notes that have elected to participate in the remarketing pursuant to the procedures set forth in Section 4.5(d) of the Pledge Agreement. On the seventh Business Day prior to
the first day of each Remarketing Period, the Agent shall give Holders of Normal Units and holders of Separate Notes notice of the remarketing including the specific U.S. Treasury security or securities (including the CUSIP number and/or the
principal terms of such Treasury security or securities) that must be delivered by Holders of Normal Units that elect not to participate in the remarketing and the deadline for such delivery. The Company or the Agent, at the Company’s request,
shall request not later than seven nor more than 15 calendar days prior to any Remarketing Period, that the Clearing Agency notify the Clearing Agency participants of such Remarketing Period. The Agent shall notify, by 10:00 a.m., New York City
time, on the third Business Day preceding the first day of such Remarketing Period, the Remarketing Agent and the Collateral Agent of the aggregate principal amount of Notes of Normal Unit Holders to be remarketed. On the third Business Day
preceding the first day of such Remarketing Period, no later than by 10:00 a.m., New York City time, pursuant to the terms of the Pledge Agreement, the Custodial Agent will notify the Remarketing Agent of the aggregate principal amount of Separate
Notes to be remarketed. No later than 10:00 a.m., New York City time, on the Business Day immediately preceding the first day of such Remarketing Period, the Collateral Agent and the Custodial Agent, pursuant to the terms of the Pledge Agreement,
will deliver for remarketing to the Remarketing Agent all Notes to be remarketed. Upon receipt of such notice from the Agent and the Custodial Agent and such Notes from the Collateral Agent and the Custodial Agent, the Remarketing Agent will, on the
Remarketing Date (and any Subsequent Remarketing Date), use its commercially reasonable best efforts to sell such Notes on such date at an aggregate price equal to at least 100.25% of the Remarketing Value (or, if the Remarketing Agent is unable to
remarket the Notes at such a price, at a price below 100.25% in the discretion of the Remarketing Agent, but in no event less than 100.00% of the Remarketing Value). The sale of the Notes will be settled on or prior to the third 

  

 55 

 
Business Day following the Remarketing Date or any Subsequent Remarketing Date on which the Notes were successfully remarketed. The Remarketing Agent will
use the proceeds from a successful remarketing to purchase the appropriate U.S. Treasury securities (the “Agent-purchased Treasury Consideration”) with the CUSIP numbers, if any, selected by the Remarketing Agent, described in clauses (i)
and (ii) of the definition of Remarketing Value related to the Notes of Holders of Normal Units that were remarketed. On or prior to the third Business Day following the Remarketing Date or any Subsequent Remarketing Date on which the Notes are
successfully remarketed, the Remarketing Agent shall deliver such Agent-purchased Treasury Consideration to the Agent, which shall thereupon deliver such Agent-purchased Treasury Consideration to the Collateral Agent. The Collateral Agent, for the
benefit of the Company, will thereupon apply such Agent-purchased Treasury Consideration, in accordance with the Pledge Agreement, to secure such Holders’ obligations under the Purchase Contracts. In the event of a successful remarketing
pursuant to this Section 5.4, the Remarketing Agent will deduct as a remarketing fee after allowing for the aggregate purchase price of the Agent-purchased Treasury Consideration an amount not exceeding 25 basis points (.25%) of the Remarketing
Value (the “Remarketing Fee”). The Remarketing Agent will remit (1) the portion of the proceeds from the remarketing attributable to the Separate Notes to the holders of Separate Notes that were remarketed and (2) the remaining portion of
the proceeds, less those proceeds used to purchase the Agent-purchased Treasury Consideration, to the Agent for the benefit of the Holders of the Normal Units that were remarketed, all determined on a pro rata basis, in each case, on or prior to the
third Business Day following the Remarketing Date or any Subsequent Remarketing Date on which the Notes were successfully remarketed. Holders whose Notes are so remarketed will not otherwise be responsible for the payment of any Remarketing Fee in
connection therewith. 
  
 (ii) If, in spite of
using its commercially reasonable best efforts, the Remarketing Agent cannot remarket the Notes included in the remarketing at a price equal to at least 100.25% of the Remarketing Value (or, if the Remarketing Agent is unable to remarket the Notes
at such a price, at a price below 100.25% in the discretion of the Remarketing Agent, but in no event less than 100.00% of the Remarketing Value) on the Remarketing Date, the Remarketing Agent will attempt to establish a Remarketing Rate meeting
these requirements on each of the two immediately following Business Days. If the Remarketing Agent cannot establish a Remarketing Rate meeting these requirements on any day during a Remarketing Period, the remarketing in such Remarketing Period
will be deemed to have failed (a “Failed Remarketing”). In the event of a Failed Remarketing with respect to the first Remarketing Period, the Remarketing Agent will undertake the procedures set forth in clause (i) above on each of the
three Business Days in the second Remarketing Period. In the event of a Failed Remarketing in the second Remarketing 

  

 56 

 
Period, the Remarketing Agent will further attempt to establish such a Remarketing Rate on the third Business Day immediately preceding the Stock Purchase
Date. If, in spite of using its commercially reasonable best efforts, the Remarketing Agent fails to remarket the Notes underlying the Normal Units at a price equal to at least 100.25% of the Remarketing Value (or, if the Remarketing Agent is unable
to remarket the Notes at such a price, at a price below 100.25% in the discretion of the Remarketing Agent, but in no event less than 100.00% of the Remarketing Value) in accordance with the terms of the Pledge Agreement by 4:00 p.m., New York City
time, on the third Business Day immediately preceding the Stock Purchase Date, the “Last Failed Remarketing” will be deemed to have occurred. Each remarketing attempt that takes place in accordance with this Section 5.4 after the
Remarketing Date is referred to herein as a “Subsequent Remarketing.” Within three Business Days following the date of a Failed Remarketing or the Last Failed Remarketing, as the case may be, the Remarketing Agent shall return any Notes
delivered to it to the Collateral Agent and the Custodial Agent, as applicable. The Collateral Agent, for the benefit of the Company, may exercise its rights as a secured party with respect to such Notes, including those actions specified in (b)
(iii) below; provided that if upon the Last Failed Remarketing, the Collateral Agent exercises such rights for the benefit of the Company with respect to such Notes, any accumulated and unpaid interest on such Notes will become payable by the
Company to the Agent for payment to the Holders of the Normal Units to which such Notes relate. Such payment will be made by the Company on or prior to 11:00 a.m., New York City time, on the Stock Purchase Date in lawful money of the United States
by certified or cashier’s check or wire transfer in immediately available funds payable to or upon the order of the Agent. The Company will cause a notice of any Failed Remarketing and of the Last Failed Remarketing to be published on the
fourth Business Day following each Failed Remarketing and the Last Failed Remarketing, as the case may be, in a daily newspaper in the English language of general circulation in The City of New York, which shall be The Wall Street Journal, if
such newspaper is then so published. The Company will also release this information by means of Bloomberg and Reuters newswire (or any successor or equivalent of such newswires). 
  
 (iii) With respect to any Notes which constitute part of Normal Units which are subject to the Last 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 Section 5.4 (e) below, may, among other things, (A) retain such Notes in full
satisfaction of the Holders’ obligations under the Purchase Contracts or (B) sell such Notes in one or more public or private sales or otherwise. 
  

 57 

 (iv) A Holder of Normal Units may elect not to participate in the remarketing and retain
the Notes underlying such Units by notifying the Agent of such election and delivering the specific U.S. Treasury security or securities (including the CUSIP number and/or the principal terms of such security or securities) identified by the Agent
(as having been based solely on the identification that the Remarketing Agent shall have advised the Agent) that constitute the U.S. Treasury securities described in clauses (i) and (ii) of the definition of Remarketing Value relating to the
retained Notes (as if only such Notes were being remarketed) (the “Opt-out Treasury Consideration”) to the Agent not later than 10:00 a.m., New York City time, on the fourth Business Day prior to the first day of any Remarketing Period.
Upon receipt thereof by the Agent, the Agent shall deliver such Opt-out Treasury Consideration to the Collateral Agent, which will, for the benefit of the Company, thereupon apply such Opt-out Treasury Consideration to secure such Holder’s
obligations under the Purchase Contracts. On the Business Day immediately preceding the first day of a Remarketing Period, the Collateral Agent, pursuant to the terms of the Pledge Agreement, will deliver the Pledged Notes of such Holder to the
Agent. Within three Business Days following the last day of such Remarketing Period, (A) if the remarketing was successful, the Agent shall distribute such Notes to the Holders thereof, and (B) if there was a Failed Remarketing on such date, the
Agent will deliver such Notes to the Collateral Agent, which will, for the benefit of the Company, thereupon apply such Notes to secure such Holders’ obligations under the Purchase Contract and return the Opt-out Treasury Consideration
delivered by such Holders to such Holders. A Holder that does not so deliver the Opt-out Treasury Consideration or does not so notify the agent of its election not to participate in the remarketing pursuant to this clause (iv) shall be deemed to
have elected to participate in the remarketing. 
  
 (c) Upon the maturity of the Pledged Treasury Securities underlying the Stripped Units and, in the event of a successful remarketing or a Special Event Redemption, the Pledged Treasury Consideration underlying the Normal Units on the Stock
Purchase Date, the Collateral Agent shall remit to the Company an amount equal to the aggregate Purchase Price applicable to such Units, as payment for the shares of Common Stock issuable upon settlement thereof without needing to receive any
instructions from the Holders of such Units. In the event the payments in respect of the Pledged Treasury Securities or the Pledged Treasury Consideration underlying a Unit is in excess of the Purchase Price of the Purchase Contract being settled
thereby, the Collateral Agent will distribute such excess to the Agent for the benefit of the Holder of such Unit when received. 
  
 (d) Any distribution to Holders of excess funds and interest described in Section 5.4 (b) and (c) above shall be payable at the Corporate
Trust Office or, 

  

 58 

 
at the option of the Holder or the holder of Separate Notes, as applicable, by check mailed to the address of the Person entitled thereto at such address as
it appears on the Register or by wire transfer to an account maintained in the United States specified by the Holder or the holder of Separate Notes, as applicable. 
  
 (e) Notwithstanding anything to the contrary herein or in the Pledge Agreement, subject to Section 3.2 of
the Pledge Agreement, the obligations of each Holder to pay the Purchase Price are non-recourse obligations and are payable solely out of the proceeds of any Collateral pledged to secure the obligations of the Holders (except to the extent paid by
Cash Settlement, Early Settlement or Merger Early Settlement) and in no event will Holders be liable for any deficiency between such payments and the Purchase Price. 
  
 (f) Notwithstanding anything to the contrary herein, 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 of the related Unit unless the Company shall have (i) received payment in full of the aggregate Purchase Price for the shares of Common Stock to be
purchased thereunder by such Holder in the manner herein set forth or (ii) become entitled to exercise its rights as a secured party under Section 5.4(b)(iii). 
  

SECTION 5.5 Issuance of Shares of Common Stock. 
  
 Unless a Termination Event shall have occurred on or prior to the Stock Purchase Date or an Early Settlement or a Merger Early Settlement shall have
occurred, on the Stock Purchase 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)
or the Company’s exercise of its rights as a secured party pursuant to Section 5.4(b)(iii), the Company shall issue and deposit with the Agent, for the benefit of the Holders of the Outstanding Units, 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 Stock Purchase 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 Stock Purchase 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 Units then held by such Holder) together with cash in lieu of
fractional shares as provided in Section 5.12 and any dividends or distributions with respect to such shares constituting part of the Purchase Contract Settlement Fund, but without any interest thereon, and the Certificate so surrendered shall
forthwith be cancelled. Such shares shall be registered in the name 

  

 59 

 
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 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 such Certificate 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) Stock Dividends. In case the Company shall pay or make a dividend or other distribution on the Common Stock in shares of 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 of Common Stock and the total number of shares of Common Stock 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 the 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 Common
Stock held in the treasury of the Company. 
  
 (2) Stock Purchase Rights. 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 Units upon settlement of the Purchase
Contracts underlying such Units) entitling them, 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 Common Stock on the date fixed for the determination of stockholders entitled to receive such rights, options or warrants (other than pursuant to a dividend reinvestment,
share purchase or similar plan), 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, the numerator 

  

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of which 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 per share of Common Stock and the denominator of which
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 Common Stock held in the
treasury of the Company. 
  
 (3) Stock Splits;
Reverse Splits. 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) Debt or Asset Distributions. (i) 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 5.6(a), shares of capital stock of any class or series, or similar equity interests, of or
relating to a subsidiary or other business unit in the case of a Spin-Off referred to in the next paragraph, or any dividend or distribution paid exclusively in cash and any dividend or distribution referred to in paragraph (1) of this Section
5.6(a)), the Settlement Rate 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, the numerator of which shall be the Current Market Price per share of Common Stock on the date fixed for such determination less the 

  

 61 

 
then fair market value (as determined by the Board of Directors, whose determination shall be conclusive and described in a Board Resolution filed with the
Agent) of the portion of the assets or evidences of indebtedness so distributed applicable to one share of Common Stock and the denominator of which shall be such Current Market Price per share of 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 5.6(a)
shall not be applicable. 
  
 (ii) In the case of
a Spin-Off, the Settlement Rate in effect immediately before the close of business on the record date fixed for determination of stockholders entitled to receive that distribution will be increased by multiplying the Settlement Rate by a fraction,
the numerator of which is the Current Market Price per share of Common Stock plus the Fair Market Value of the portion of those shares of Capital Stock or similar equity interests so distributed applicable to one share of Common Stock and the
denominator of which is the Current Market Price per share of Common Stock. Any adjustment to the settlement rate under this paragraph 4(ii) will occur on the date that is the earlier of (1) the tenth Trading Day following the effective date of the
Spin-Off and (2) the date of the securities being offered in the Initial Public Offering of the Spin-Off, if that Initial Public Offering is effected simultaneously with the Spin-Off. 
  
 (5) Cash Distributions. In case the Company or any of its subsidiaries shall, by dividend or
otherwise, pay regular quarterly, semi-annual or annual cash dividends or make any other distributions consisting exclusively of cash to all holders of shares of the Company’s Common Stock, excluding any cash dividend or distribution on shares
of the Company’s Common Stock to the extent that the aggregate cash dividend or distribution per share of Common Stock in any quarter does not exceed $0.075 (the “Dividend Threshold Amount”) (the Dividend Threshold Amount is subject
to adjustment on the same basis as the Settlement Rate, provided that no adjustment shall be made to the Dividend Threshold Amount for any adjustment made pursuant to this clause (5)) then, in such case, the Settlement Rate in effect at the close of
business on the date fixed for the determination of stockholders entitled to receive such dividend or distribution shall be adjusted by dividing such rate by a fraction of which the numerator shall be the Current Market Price per share of Common
Stock on such date less the amount of cash so distributed applicable to one share of Common Stock in excess of the Dividend Threshold Amount; and the denominator shall be the Current Market Price per share of Common Stock on such date, such
adjustment to 

  

 62 

 
be effective at the opening of business on the day following the date fixed for the determination of shareholders entitled to receive such dividend or
distribution; provided that if the portion of the cash so distributed applicable to one share of Common Stock in excess of the Dividend Threshold Amount is equal to or greater than the Current Market Price on such date, in lieu of the foregoing
adjustment, adequate provision shall be made so that each Holder of a Unit shall have the right to receive upon settlement of the Purchase Contracts such excess amount. In the event that such dividend or distribution is not so paid or made, the
Settlement Rate shall again be adjusted to be the Settlement Rate that would then be in effect if such dividend or distribution had not been declared. 
  
 (6) Tender Offers. 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) 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 filed with the Agent) that when
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 filed with the Agent), as of the expiration of
such tender or exchange offer (other than consideration payable in respect of any odd-lot tender offer), of consideration payable in respect of any other tender or exchange 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 5.6(a) or this paragraph (6) has been made and (iii)
the aggregate amount of any distributions to all holders of the Common Stock made exclusively in cash (other than regular quarterly, semi-annual or 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 5.6(a) or this paragraph (6) has been made, exceeds 12.5% of the product of the Current Market Price per share of 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 after the close of business on the fifth Trading Day after the date of the Expiration Time, the Settlement Rate shall be adjusted so that the same shall equal the rate determined by multiplying the Settlement Rate immediately prior to
the 

  

 63 

 
close of business on the date of the Expiration Time by a fraction (A) the numerator of which shall be equal to (x) the product of (I) the Current Market
Price per share of the Common Stock and (II) the number of shares of Common Stock outstanding (excluding any tendered shares) on the fifth Trading Day following the date of the Expiration Time plus (y) 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) of this paragraph (6) (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 (B) the denominator of which shall be equal to the product of (x) the Current Market Price per share of the Common Stock and (y) the number of shares of Common Stock outstanding
on the fifth Trading Day following the date of the Expiration Time plus 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”). Such increase in the Settlement Rate shall be given effect retroactively as of the close of business on the date of the Expiration Time. 
  
 (7) Reclassification. 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 (i) 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 5.6(a)), and (ii) 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 5.6(a)). 
  
 (8) “Current Market Price”. The
“Current Market Price” per share of Common Stock means (a) except as provided in clauses (b) through (e) of this paragraph (8), for purposes of paragraphs (2), (4), (5) and (6) of this Section 5.6(a), on any day the average of the Closing
Price per share of Common Stock on each of the five consecutive Trading Days ending on the earlier of the day in question and the day before the “ex date” with respect to the issuance or distribution requiring such 

  

 64 

 
computation, (b) for purposes of subclauses (A) and (B) of paragraph (5) of this Section 5.6(a), the average of the Closing Price per share of Common Stock
on each of the five consecutive Trading Days commencing on the “ex date” with respect to the distribution requiring such computation, (c) for purposes of subclauses (A) and (B) of paragraph (6) of this Section 5.6(a), the average of the
Closing Price per share of Common Stock on each of the five consecutive Trading Days immediately following the date of the Expiration Time, (d) in the case of any Spin-Off that is effected simultaneously with an Initial Public Offering of the
securities being distributed in the Spin-Off, the Closing Price of the Common Stock on the Trading Day on which the initial price of the securities being distributed in the Spin-Off is determined, and (e) in the case of any other Spin-Off, the
average of the Closing Prices per share of Common Stock over the first 10 Trading Days after the effective date of such Spin-Off. For purposes of this paragraph and the last sentence of paragraph (6) of this Section 5.6(a), 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 on such exchange or in such market without the right to receive such issuance or distribution. 
  
 (9) Calculation of Adjustments. 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 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) through (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 (i),
(ii) or (iii) of the definition of Settlement Rate in Section 5.1(a) will apply on the Stock Purchase Date. Such adjustment shall be made by multiplying the Applicable Market Value by a fraction, the numerator of which shall be the Settlement Rate
immediately after such adjustment pursuant to paragraph (1) through (7) or (10) of this Section 5.6(a) and the denominator of which shall be the Settlement Rate immediately before such adjustment; provided 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) through (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. 
  

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 (10) Increase of Settlement Rate. 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 any income tax to any holders of shares of Common Stock resulting from any dividend or distribution of Capital 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. 
  
 (b) Adjustment for Consolidation, Merger or Other Reorganization Event. 
  
 In the event of 
  
 (1) 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 shares of Common Stock outstanding immediately prior to the merger or consolidation are not exchanged for cash, securities or
other property of the Company or another corporation), 
  
 (2) any sale, transfer, lease or conveyance to another Person of the property of the Company as an entirety or substantially as an entirety, 
  
 (3) any statutory exchange of securities of the Company with another Person (other than in connection with a merger or acquisition), or

  
 (4) 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”), 
  
 each share of Common Stock covered by each Purchase Contract forming part of a Unit immediately prior to such Reorganization Event shall, after such Reorganization Event,
be converted for purposes of the Purchase Contract into the kind and amount of securities, cash and other property receivable in 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 Stock Purchase Date) per share of Common Stock by a holder of Common Stock that (i) is not a Person with which the Company consolidated or into which the Company merged or which merged into the Company
or to which such sale or transfer 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 shares of Common
Stock held by Affiliates of the Company and non-Affiliates, and (ii) failed to exercise his 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 a Person other than a Constituent 

  

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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 of Common Stock by a plurality
of the Non-electing Shares). On the Stock Purchase Date, the Settlement Rate then in effect will be applied to the value on the Stock Purchase Date of such securities, cash or other property. 
  
 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 Holder of each Outstanding Unit 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: 
  
 (i) forthwith compute the Settlement Rate in accordance with Section 5.6 and prepare and transmit to the Agent an Officers’ 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) as soon as practicable 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 Agent of the occurrence of such event and a statement setting forth in reasonable detail 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 Units 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 

  

 67 

 
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 Holders to
receive Contract Adjustment Payments, if any, or any Deferred Contract Adjustment Payments and obligations of Holders to purchase shares of 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 Stock Purchase Date, a Termination Event shall have occurred. Upon and after the occurrence of a Termination Event, the Normal Units shall thereafter represent the right to receive the
Notes or the appropriate Treasury Consideration, as the case may be, forming a part of such Normal Units, and the Stripped Units shall thereafter represent the right to receive the Treasury Securities forming a part of such Stripped Units, in each
case in accordance with the provisions of Section 4.3 of the Pledge Agreement. 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 Register. 
  
 SECTION 5.9 Early Settlement. 
  
 (a) Subject to and upon compliance with the provisions of this Section 5.9, Purchase Contracts underlying Units having an aggregate Stated Amount equal to $1,000 or an integral multiple thereof may, at the option of
the Holder thereof, be settled early (“Early Settlement”) on or prior to 10:00 a.m., New York City time, on the seventh Business Day immediately preceding the Stock Purchase Date. Holders of Stripped Units may only effect Early Settlement
of the related Purchase Contracts in integral multiples of 40 Stripped Units, and if Treasury Consideration has been substituted for the Notes as a component in the Normal Units due to a successful remarketing of the Notes pursuant to the provisions
of Section 5.4 or the occurrence of a Special Event Redemption, Purchase Contracts underlying such Normal Units may only be settled early in integral multiples of Normal Units such that the Treasury Consideration to be deposited and the Treasury
Consideration to be released are in integral multiples of $1,000. In order to exercise the right to effect Early Settlement with respect to any Purchase Contracts, the Holder of the Certificate evidencing the related Units 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 on the reverse thereof duly completed and accompanied by payment payable to the Company in
immediately available funds in an amount (the “Early Settlement Amount”) equal to (A) the product of (i) the Purchase Price multiplied 

  

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by (ii) the number of Purchase Contracts with respect to which the Holder has elected to effect Early Settlement, plus (B) 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, if any, payable
on such Payment Date with respect to such Purchase Contracts; provided that no payment shall be required pursuant to clause (B) of this sentence if the Company shall have elected to defer the Contract Adjustment Payments which would otherwise
be payable on such Payment Date. Except as provided in the immediately preceding sentence and subject to Section 5.2(d), no payment or adjustment shall be made upon Early Settlement of any Purchase Contract on any Contract Adjustment Payments
accrued on such Purchase Contract or on account of any dividends on the shares of Common Stock issued upon such Early Settlement. If the foregoing requirements are first satisfied with respect to Purchase Contracts underlying any Unit at or prior to
5:00 p.m., New York City time, on a Business Day, such day shall be the “Early Settlement Date” with respect to such Unit and if such requirements are first satisfied after 5:00 p.m., New York City time, on a Business Day or on a day that
is not a Business Day, the “Early Settlement Date” with respect to such Units shall be the next succeeding Business Day. 
  
 (b) Upon Early Settlement of any Purchase Contract by the Holder of the related Units, the Company shall issue, and the Holder shall be
entitled to receive, 1.4748 shares of Common Stock on account of such Purchase Contract (the “Early Settlement Rate”). The Early Settlement Rate shall be adjusted in the same manner and at the same time as the Settlement Rate is adjusted
pursuant to 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 5.12. 
  
 (c) As promptly as practicable 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 Pledged Notes or Pledged Treasury Consideration, in the case of Normal
Units, or the related Pledged Treasury Securities, in the case of Stripped Units, 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 the Holder’s designee.

  
 (d) Upon Early Settlement of any Purchase
Contracts, and subject to receipt of shares of Common Stock from the Company and the Pledged Notes, Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, from the Collateral Agent, as applicable, the Agent shall, in
accordance with 

  

 69 

 
the instructions provided by the Holder thereof on the applicable form of Election to Settle Early on the reverse of the Certificate evidencing the related
Units, (i) transfer to the Holder the Pledged Notes, Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, forming a part of such Units, 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 5.12. 
  
 (e) In the event that Early Settlement is effected with respect to Purchase Contracts underlying less than all the Units evidenced by a
Certificate, upon such Early Settlement the Company shall execute and the Agent shall authenticate, execute on behalf of the Holder and deliver to the Holder thereof, at the expense of the Company, a Certificate evidencing the Units as to which
Early Settlement was not effected. 
  
 (f) No
Early Settlement will be permitted under this Section 5.9 unless, at the time of delivery of the Election to Settle Early form or the time the Early Settlement is effected, there is an effective registration statement with respect to the shares of
Common Stock to be issued and delivered in connection with such Early Settlement, if such a registration statement is required (in the view of counsel, which need not be in the form of a written opinion, for either the Company or the Agent) under
the Securities Act. If such a registration statement is so required, the Company covenants and agrees to use its commercially reasonable efforts to (A) have in effect a registration statement covering the shares of Common Stock to be delivered in
respect of the Purchase Contracts being settled and (B) provide a prospectus in connection therewith, in each case in a form that the Agent may use in connection with such Early Settlement. 
  
 SECTION 5.10 Early Settlement Upon Cash Merger. 
  
 (a) In the event of a merger or consolidation of the Company
of the type described in clause (1) of Section 5.6(b) in which the shares of Common Stock outstanding immediately prior to such merger or consolidation are exchanged for consideration consisting of at least 30% cash or cash equivalents (any such
event a “Cash Merger”), then the Company (or the successor to the Company hereunder) shall be required to offer the Holder of each Unit the right to settle the Purchase Contract underlying such Unit prior to the Stock Purchase Date
(“Merger Early Settlement”) as provided herein. On or before the fifth Business Day after the consummation of a Cash Merger, the Company or, at the request and expense of the Company, the Agent, shall give all Holders notice of the
occurrence of the Cash Merger and of the right of Merger Early Settlement arising as a result thereof. The Company shall also deliver a copy of such notice to the Agent and the Collateral Agent. 
  

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 Each such notice shall contain: 
  
 (i) the date, which shall be not less than 20 nor more than 30 calendar days after the date of such notice,
on which the Merger Early Settlement will be effected (the “Merger Early Settlement Date”); 
  
 (ii) the date, which shall be on or one Business Day prior to the Merger Early Settlement Date, by which the Merger Early Settlement right
must be exercised; 
  
 (iii) the Settlement Rate
in effect as a result of such Cash Merger and the kind and amount of securities, cash and other property receivable by the Holder upon settlement of each Purchase Contract pursuant to Section 5.6(b); 
  
 (iv) a statement to the effect that all or a portion of the
Purchase Price payable by the Holder to settle the Purchase Contract will be offset against the amount of cash so receivable upon exercise of Merger Early Settlement, as applicable; and 
  
 (v) the instructions a Holder must follow to exercise the Merger Early Settlement right. 
  
 (b) To exercise a Merger Early Settlement right, a Holder
shall deliver to the Agent at the Corporate Trust Office on or before 5:00 p.m., New York City time, on the date specified in the notice the Certificate(s) evidencing the Units with respect to which the Merger Early Settlement right is being
exercised duly endorsed for transfer to the Company or in blank with the form of Election to Settle Early on the reverse thereof duly completed and accompanied by payment payable to the Company in immediately available funds in an amount equal to
the Early Settlement Amount less the amount of cash that otherwise would be deliverable by the Company or its successor upon settlement of the Purchase Contract in lieu of shares of Common Stock pursuant to Section 5.6(b) and as described in the
notice to Holders (the “Merger Early Settlement Amount”). 
  
 (c) On the Merger Early Settlement Date, the Company shall deliver or cause to be delivered (i) the net cash, securities and other property to be received by such exercising Holder, equal to the Settlement Rate as
adjusted pursuant to Section 5.6, in respect of the number of Purchase Contracts for which such Merger Early Settlement right was exercised, and (ii) the related Pledged Notes or Pledged Treasury Consideration, in the case of Normal Units, or
Pledged Treasury Securities, in the case of Stripped Units, to be released from the Pledge by the Collateral Agent and transferred, in each case, to the Corporate Trust Office for delivery to the Holder thereof or its designee. In the event a Merger
Early Settlement right shall be exercised by a Holder in accordance with the terms hereof, all references herein to Stock Purchase Date shall be deemed to refer to such Merger Early Settlement Date. 
  

 71 

 (d) Upon Merger Early Settlement of any Purchase Contracts, and subject to receipt of
such net cash, securities or other property from the Company and the Pledged Notes, Pledged Treasury Consideration or Pledged 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 on the reverse of the Certificate evidencing the related Units, (i) transfer to the Holder the Pledged Notes, Pledged Treasury Consideration or Pledged
Treasury Securities, as the case may be, forming a part of such Units, and (ii) deliver to the Holder such net cash, securities or other property issuable upon such Merger Early Settlement together with payment in lieu of any fraction of a share, as
provided in Section 5.12. The option to effect Merger Early Settlement may be exercised only with respect to Purchase Contracts underlying Units with an aggregate Stated Amount equal to $1,000 or an integral multiple thereof. 
  
 (e) In the event that Merger Early Settlement is effected
with respect to Purchase Contracts underlying less than all the Units evidenced by a Certificate, upon such Merger Early Settlement the Company (or the successor to the Company hereunder) shall execute and the Agent shall authenticate, execute on
behalf of the Holder and deliver to the Holder thereof, at the expense of the Company, a Certificate evidencing the Units as to which Merger Early Settlement was not effected. 
  
 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 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 Unit 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 Units 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 Certificate or share of Common Stock unless and 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. 
  
 SECTION 5.12 No Fractional Shares. 
  
 No fractional shares or scrip representing fractional shares of Common Stock shall be issued or delivered upon settlement on the Stock Purchase Date or
upon Early Settlement or 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 

  

 72 

 
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 applicable Settlement Date or upon Early Settlement or Merger Early Settlement, the Company, through the Agent, shall make
a cash payment in respect of such fractional shares in an amount equal to the value of such fractional shares times the Applicable Market Value. 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 5.12 in a timely manner. 
  
 ARTICLE VI 
  
 REMEDIES 
  
 SECTION 6.1 Unconditional Right of Holders to Receive Purchase Contract
Adjustment Payments and Purchase Common Stock. 
  
 The Holder
of any Unit shall have the right, which is absolute and unconditional, 
  
 (a) subject to the right of the Company to defer payment thereof pursuant to Section 5.3, and to the forfeiture of any Deferred Contract Adjustment Payments upon Early Settlement pursuant to Section 5.9 or upon Merger
Early Settlement pursuant to Section 5.10 or upon the occurrence of a Termination Event, to receive payment of each installment of the Contract Adjustment Payments, if any, with respect to the Purchase Contract constituting a part of such Unit on
the respective Payment Date for such Unit, and to institute suit for the enforcement of such right to receive Contract Adjustment Payments, and 
  
 (b) to purchase shares of Common Stock pursuant to the Purchase Contract constituting a part of such Unit and to institute suit for the
enforcement of any such right to purchase shares of 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. 
  

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 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 Section 3.11(f), 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 a Unit, by its acceptance of such Unit 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 Units, or to any suit instituted by any Holder for the enforcement of distributions on any Notes or Contract Adjustment Payments, if any, on any Purchase Contract on or after the
respective Payment Date therefor in respect of any Unit held by such Holder, or for enforcement of the right to purchase shares of Common Stock under the Purchase Contract constituting part of any Unit held by such Holder. 
  
 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, but will suffer and permit the execution of every such power as though no such law had been enacted.

  

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 SECTION 6.7 Liquidated Damages. 
  
 (a) The Company has agreed to pay Liquidated Damages with respect to the Units under the circumstances
described in the terms and conditions of Section 8 of the Registration Rights Agreement. If the Company is required to pay Liquidated Damages pursuant to the Registration Rights Agreement, such payments shall be made to the Holders of the Units, or,
if applicable, to the holders of Common Stock issued at settlement of the Purchase Contracts pursuant to the terms thereof, in accordance with the terms of the Registration Rights Agreement. 
  
 (b) The Company shall give the Agent prompt notice of the
occurrence of any Registration Default or Effective Failure under the Registration Rights Agreement and, at least two Business Days prior to each Payment Date, of the amount of Liquidated Damages per each Stated Amount of the Units payable on each
Payment Date. 
  
 (c) Whenever in this Agreement
there is a reference, in any context, to a Contract Adjustment Payment, such mention shall be deemed to include mention of the payment of Liquidated Damages payable as described in the preceding paragraph to the extent that, in such context,
Liquidated Damages are, were or would be payable in respect of the Units and express mention of the payment of Liquidated Damages (if applicable) in any provisions of this Agreement shall not be construed as excluding Liquidated Damages in those
provisions of this Agreement where such express mention is not made. 
  
 ARTICLE VII 
  
 THE AGENT 
  
 SECTION 7.1 Certain Duties and Responsibilities. 
  
 (a) (1) The Agent undertakes to perform, with respect to the
Units and Separate Notes, such duties and only such duties as are specifically set forth in this Agreement and the Pledge Agreement, and no implied covenants or obligations shall be read into this Agreement against the Agent; and 
  
 (2) in the absence of bad faith, willful misconduct or
negligence on its part, the Agent may, with respect to the Units and Separate Notes, conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, 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 (but need not 

  

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confirm or investigate the accuracy of the mathematical calculations or other facts stated therein). 
  
 (b) No provision of this Agreement shall be construed to
relieve the Agent from liability for its own negligent action, its own negligent failure to act, its own bad faith or its own willful misconduct, except that: 
  

(1) this paragraph (b) shall not be construed to limit the effect of paragraph (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 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. 
  
 (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 and deliver the Pledge Agreement in its capacity as Agent. 
  
 SECTION 7.2 Notice of Default. 
  
 Within 30 days after the occurrence of any default by the Company 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 Units, as their names and addresses appear in the applicable Register, notice of such default hereunder, unless such
default shall have been cured or waived. 
  
 SECTION 7.3
Certain Rights of Agent. 
  
 Subject to the provisions of
Section 7.1: 
  
 (a) the Agent may conclusively
rely and shall be fully 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 reasonably believed by it to be genuine and to have been signed or presented by the proper party or parties; 
  

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 (b) any request or direction of the Company mentioned herein shall be sufficiently
evidenced by an Officers’ 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 an Officers’ Certificate of the Company; 
  
 (d) the Agent may consult with counsel 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 of the Agent and the Agent shall not be responsible for any misconduct or negligence on the part of any agent or attorney or an affiliate of the Agent
appointed with due care hereunder; 
  
 (g) the
Agent shall be under no obligation to exercise any of the rights or powers vested in it by this Agreement solely at the request or direction of any of the Holders pursuant to this Agreement, unless such Holders shall have offered to the Agent
security or indemnity satisfactory to the Agent against the costs, expenses and liabilities which might be incurred by it in compliance with such request or direction; 
  
 (h) the Agent shall not be deemed to have notice of any default unless a Responsible Officer of the Agent
has actual knowledge thereof or unless written notice of any event which is in fact such a default is received by the Agent at the Corporate Trust Office of the Agent, and such notice references the Units and this Agreement and states that it is a
notice of default; and 
  

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 (i) the Agent may request that the Company deliver an Officers’ Certificate setting
forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Agreement, which Officers’ Certificate may be signed by any person authorized to sign an Officers’ Certificate,
including any person specified as so authorized in any such Certificate previously delivered and not superseded. 
  
 SECTION 7.4 Not Responsible for Recitals or Issuance of Units. 
  
 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 Units, or of the Pledge Agreement or the Pledge or of the Pledged Notes, the Pledged Treasury Consideration
or of the Pledged Treasury Securities. The Agent shall not be accountable for the use or application by the Company of the Units or the proceeds therefrom or in respect of the Purchase Contracts. The Purchase Contract Agent shall not be responsible
for the preparation or filing of any financing or continuation statements in any jurisdiction or responsible for the maintenance or perfection of any security interest granted under the Pledge Agreement. 
  
 SECTION 7.5 May Hold Units. 
  
 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 Units 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 Agent’s 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: 
  
 (a) to pay to the Agent from time to time reasonable
compensation for all services rendered by it hereunder; 
  
 (b) except as otherwise expressly provided herein, to reimburse the Agent upon its request for all reasonable expenses, disbursements and advances incurred or made by the Agent in accordance with any provision of this
Agreement (including the reasonable compensation and the reasonable expenses 

  

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and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to its 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 negligence, willful misconduct or bad faith on its part, arising out of or in connection with the acceptance or administration 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. The Agent shall promptly notify the Company of any
third-party claim which may give rise to the indemnity hereunder and give the Company the opportunity to control the defense of such claim with counsel reasonably satisfactory to the indemnified party, and no such claim shall be settled without the
written consent of the Company, which consent shall not be unreasonably withheld. 
  
 For purposes of this Section 7.7, “Agent” shall include any predecessor Agent; provided that the negligence, bad faith or willful misconduct of any Agent hereunder shall not affect the rights of any
other Agent hereunder. 
  
 The provisions of this Section 7.7
shall survive the termination of this Agreement, the satisfaction or discharge of the Units and/or the Separate Notes and/or the resignation or removal of the Agent. 
  
 SECTION 7.8 Corporate Agent Required; Eligibility. 
  
 There shall at all times be an Agent hereunder which shall be 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, subject to supervision or examination by federal or state authority and having a Corporate Trust Office in the Borough of Manhattan, The City of New York, if there be such a corporation, qualified and eligible under this Article and
willing to act on reasonable terms. 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. 
  
 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 

  

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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 Units 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 were 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 Unit 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, (x) the Company by a Board Resolution may remove the Agent, or (y) any Holder who has been a bona
fide Holder of a Unit 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. For purposes of Section
7.9(d)(1), to the extent permitted by the TIA, the Agent shall not be deemed to have a conflicting interest by virtue of being Trustee under the Indenture and Purchase Contract Agent under the Purchase Contract Agreement dated as of May 7, 2003,
between the Company and JPMorgan Chase Bank, as Purchase Contract 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 reason, 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 

  

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Agent shall have been so appointed by the Company and accepted appointment in the manner required by Section 7.10, any Holder who has been a bona fide Holder
of a Unit for at least six months may, on behalf of itself 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. 
  
 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. 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 

  

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executed on behalf of the Holders, but not delivered, by the Agent then in office, any successor to such Agent shall 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 Units. 
  
 SECTION 7.12 Preservation of Information. 
  
 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. 
  
 SECTION 7.13 No Obligations of Agent.

  
 Except to the extent otherwise provided in this Agreement,
the Agent assumes no obligation 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 Unit thereunder. The Company agrees, and each Holder of
a Certificate, by such Holder’s 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. 
  
 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 Units or (ii) based on consultation with the
Company, the issuance, delivery, holding, transfer, redemption or exercise of rights under the Units. 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 reasonable written direction timely received from the Company with respect to the execution or
certification of any required documentation and 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). 
  
 (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. 
  

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 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 (provided such covenants or such surrender shall not adversely affect the validity, perfection or priority of
the security interests granted or created under the Pledge Agreement); or 
  
 (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 5.10; 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. 
  
 (a)
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 Units;
provided that, except as contemplated herein, no such supplemental agreement shall, without the consent of the Holder of each Outstanding Unit affected thereby: 
  
 (1) change any Payment Date; 
  

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 (2) 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 Normal Units to substitute the Treasury Securities
for the Pledged Notes or Pledged Treasury Consideration or the rights of holders of Stripped Units to substitute Notes or appropriate Treasury Consideration for the Pledged Treasury Securities) or otherwise materially adversely affect the
Holder’s rights in or to such Collateral; 
  
 (3) 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 or increase any amounts payable in respect of
the Units or decrease any other amounts receivable by Holders in respect of the Units; 
  
 (4) impair the right to institute suit for the enforcement of any Purchase Contract, any Contract Adjustment Payment, if any, or any
Deferred Contract Adjustment Payment, if any; 
  
 (5) 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 Stock Purchase Date or otherwise
materially adversely affect the Holder’s rights under any Purchase Contract; or 
  
 (6) reduce the percentage of the outstanding Purchase Contracts the consent of whose Holders is required for any such supplemental
agreement; 
  
 provided that if any amendment or proposal
referred to above would adversely affect only the Normal Units or the Stripped Units, then only the affected class of Holder 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, however, that no such agreement, whether with or without the consent of Holders,
shall affect Section 3.17. 
  
 (b) It shall not
be necessary for any Act of 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. 
  

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 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 Officer’s
Certificate and an Opinion of Counsel stating that the execution of such supplemental agreement is authorized or permitted by this Agreement and that all conditions precedent to the execution of such supplemental agreement have been satisfied. The
Agent shall enter into any such supplemental agreement which does not materially adversely affect 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, so long as any Units are outstanding, it will not (a) merge with or into or consolidate with any other Person or (b) transfer, lease or convey all or substantially all its assets to any
Person or buy all or substantially all of the assets of another Person, unless (i) either the Company shall be the continuing entity, or the successor (if other than the Company) shall be a corporation, partnership or trust organized and existing
under the laws of the United States of America or a State thereof or the District of Columbia and such Person shall expressly assume all the obligations of the Company under the Purchase Contracts, this Agreement, the Remarketing Agreement 

  

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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, as the case may be, shall not, immediately after such merger or consolidation, or such transfer, lease or conveyance, be in default in the performance of
any covenant or condition hereunder, under any of the Purchase Contracts, under the Remarketing Agreement or under the Pledge Agreement. 
  
 SECTION 9.2 Rights and Duties of Successor Corporation. 
  

(a) In case of any such consolidation, merger, transfer, lease, purchase 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 the Company, any or all of the Certificates evidencing Units 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, execution on behalf of the Holder and delivery, and any Certificate evidencing Units 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. 
  
 (b) In case of any such consolidation, merger, transfer, lease, purchase or conveyance such change in phraseology and form (but not in
substance) may be made in the Certificates evidencing Units 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, transfer,
lease, purchase 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, purchase or conveyance
have been met. 
  

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 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 Units 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. 
  
 (a) 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 payment, for acquisition of shares of Common Stock upon settlement of the Purchase Contracts on any Settlement Date 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 reestablishment of Normal Units and where notices and demands to or upon the Company in respect of the Units 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. 
  
 (b) 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 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 Units the Corporate Trust Office and appoints the Agent at its Corporate Trust Office as paying agent in such city. 
  
 SECTION 10.3 Company to Reserve Common Stock. 
  
 The Company shall at all times prior to the Stock Purchase Date reserve and
keep available, free from preemptive rights, out of its authorized but unissued Common Stock the maximum number of shares of Common Stock issuable against 

  

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tender of payment in respect of all Purchase Contracts constituting a part of the Units evidenced by Outstanding Certificates. 
  
 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 Units will, upon issuance, be duly authorized, validly issued, fully paid and nonassessable. 
  
 SECTION 10.5 Statements of Officer of the Company as to Default.

  
 The Company will deliver to the Agent, within 120 days after
the end of each fiscal year of the Company ending after the date hereof, an Officers’ Certificate, stating whether or not to the best knowledge of the signers thereof the Company is in default in the performance and observance of any of the
terms, provisions and conditions hereof, and if the Company shall be in default, specifying all such defaults and the nature and status thereof of which such Officers may have knowledge. In the event the Company shall change its fiscal year at any
time the Units are Outstanding, the Company shall notify the Agent of the effective date of such change. 
  

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

			
	 UNUMPROVIDENT CORPORATION

		
	By:	 	 /s/ Susan N. Roth

	 	 	

	 Name:
	 	 Susan N. Roth

	 Title:
	 	 Vice President, Corporate Secretary and
 Assistant General Counsel

  

			
	JPMORGAN CHASE BANK,
	as Purchase Contract Agent
		
	By:	 	 /s/ James D. Heaney

	 	 	

	 Name:
	 	 James D. Heaney

	 Title:
	 	 Vice President

  

 EXHIBIT A 
 FORM OF NORMAL UNITS CERTIFICATE 
  
 [Restricted Security Legend: If the Unit is a Restricted Security, insert — THE UNITS, THE PURCHASE CONTRACTS, THE NOTES AND THE COMMON STOCK DELIVERABLE IN SETTLEMENT OF THE PURCHASE CONTRACTS (EACH, A
“SECURITY”, AND TOGETHER, THE “SECURITIES”) WERE SOLD IN A PRIVATE PLACEMENT, WITHOUT REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY OTHER APPLICABLE SECURITIES LAWS AND MAY NOT
BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER FURTHER AGREES THAT THESE SECURITIES SHALL NOT BE TRANSFERRED TO A SUBSEQUENT PURCHASER PURSUANT TO RULE 144A UNDER THE
SECURITIES ACT. EACH PURCHASER OF THIS SECURITY WILL BE DEEMED TO REPRESENT THAT IT HAS BEEN AFFORDED AN OPPORTUNITY TO INVESTIGATE MATTERS RELATING TO THE COMPANY AND THIS SECURITY, THAT IT IS NOT ACQUIRING THIS SECURITY WITH A VIEW TO ANY
DISTRIBUTION THEREOF AND THAT IT IS A QUALIFIED INSTITUTIONAL BUYER (“QIB”) WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT WHICH IS ACQUIRING THIS SECURITY FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF ONE OR MORE ACCOUNTS, EACH OF
WHICH IS A QIB AND WITH RESPECT TO WHICH IT HAS SOLE INVESTMENT DISCRETION.] 
  
 [If a Global Certificate, insert — THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE PURCHASE CONTRACT AGREEMENT (AS DEFINED ON THE REVERSE HEREOF) 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.] 
  
 [SO LONG AS DTC IS THE DEPOSITARY, INSERT — 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. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE 

  

 A-1 

 
DEPOSITORY TRUST COMPANY, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.] 
  
 [If a Global Certificate,
insert — UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR CERTIFICATES IN DEFINITIVE REGISTERED FORM IN THE LIMITED CIRCUMSTANCES REFERRED TO IN THE PURCHASE CONTRACT AGREEMENT, THIS GLOBAL CERTIFICATE MAY NOT BE
TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE
OF SUCH SUCCESSOR DEPOSITARY.] 
  

 A-2 

 (Form of Face of Normal Units Certificate) 
  
 UnumProvident Corporation 
  
 8.25% Adjustable Conversion-Rate Equity Security Unit 
  

			
	 No.
	  	CUSIP No. [                        ]
	 Number of Normal Units
	  	 

  
 This Normal Units
Certificate certifies that              (the “Holder”) is the registered Holder of the number of Normal Units set forth above [If the Certificate is a Global
Certificate, insert - , as such number may be increased or decreased as set forth on the Schedule of Increases or Decreases in Global Certificate annexed hereto]. Each Normal Unit represents (i) either (a) a 1/40, or 2.5%, beneficial ownership
interest of the Holder in one 5.085% Senior Note due 2009 (the “Note”) of UnumProvident Corporation, a Delaware corporation (the “Company”), having a principal amount of $1,000, subject to the Pledge of such Note by such Holder
pursuant to the Pledge Agreement, or (b) if the Notes have been remarketed by the Remarketing Agent (or if the Holder has elected not to have the Note represented by the Normal Units evidenced by this Normal Units Certificate remarketed or a Special
Event Redemption has occurred), the appropriate Treasury Consideration, subject to the Pledge of such Treasury Consideration by such Holder pursuant to the Pledge Agreement, and (ii) the rights and obligations of the Holder under one Purchase
Contract with the Company. Each Normal Unit will have a stated amount of $25 (the “Stated Amount”). All capitalized terms used herein which are defined in the Purchase Contract Agreement have the meaning set forth therein. 
  
 Pursuant to the Pledge Agreement, the interest in the Note or the appropriate
Treasury Consideration, as the case may be, constituting part of each Normal Unit evidenced hereby has 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 part of such Normal Unit to purchase shares of Common Stock of the Company. Prior to the purchase of shares of Common Stock under each Purchase Contract, such Purchase Contracts shall not entitle the Holders of Normal Units Certificates
to any of the rights of a holder of shares of Common Stock, including without limitation, the right to vote or receive any dividends or other payments or to consent or to receive notice as stockholders in respect of the meetings of stockholders, or
for the election of directors of the Company or for any other matter or any other rights whatsoever as stockholder of the Company. 
  
 The Pledge Agreement provides that all payments in respect of the Pledged Notes or Pledged Treasury Consideration 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) quarterly cash distributions on Normal Units which include Pledged Notes or Pledged Treasury Consideration, as the case may be, and (B) any payments in respect
of the Notes or Treasury Consideration, as the case may be, that have been released from the Pledge 

  

 A-3 

 
pursuant to the Pledge Agreement, to the Agent to the account designated by the Agent, no later than 11:00 a.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 9:00 a.m., New York City time, on a Business Day, then such payment shall be
made no later than 9:30 a.m., New York City time, on the next succeeding Business Day) and (ii) in the case of payments in respect of any Pledged Notes or Pledged Treasury Consideration, as the case may be, to be paid upon settlement of such
Holder’s obligations to purchase shares of Common Stock under the Purchase Contract, to the Company on the Stock Purchase 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 Normal Units of which such Pledged Notes or Pledged Treasury Consideration are a part under the Purchase Contracts forming a part of such Normal Units. Payments payable on each Payment Date (as defined below) with
respect to Pledged Notes or the appropriate Pledged Treasury Consideration included in the Normal Units shall be made quarterly in arrears on such Payment Date, subject to receipt thereof by the Agent from the Trustee or Collateral Agent, as the
case may be, to the Person in whose name this Normal Units Certificate (or a Predecessor Normal Units Certificate) is registered at the close of business on the Record Date for such Payment Date. 
  
 Each Purchase Contract evidenced hereby obligates the Holder of this Normal
Units Certificate to purchase, and the Company to sell, on May 15, 2007 (the “Stock Purchase Date”), at a price equal to $25 (the “Purchase Price”), a number of shares of Common Stock, par value $0.10 per share (“Common
Stock”), of the Company, equal to the Settlement Rate, unless on or prior to the Stock Purchase Date there shall have occurred a Termination Event or an Early Settlement or Merger Early Settlement with respect to the Normal Units of which such
Purchase Contract is a part, all as provided in the Purchase Contract Agreement, as defined and more fully described on the reverse hereof. The Purchase Price for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced
hereby, if not paid earlier, shall be satisfied on the Stock Purchase Date by either (i) the application of payments received with regard to Pledged Treasury Consideration, or (ii) the exercise of the Company’s rights as a secured party in
connection with the Pledged Notes, as the case may be. 
  
 The
Company shall pay on each February 15, May 15, August 15 and November 15 each year, commencing August 15, 2004 (a “Payment Date”) in respect of each Purchase Contract forming part of a Normal Unit evidenced hereby an amount (the
“Contract Adjustment Payments”) equal to 3.165% per year 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 on the reverse hereof (provided that if on any date on which Contract Adjustment Payments are to be made on the Purchase Contracts is not a Business Day, then payment of the Contract Adjustment Payments payable on
that date will be made on the next succeeding day which is a Business Day, and no interest or payment will be paid in respect of the delay, except that if such next succeeding Business Day is in the next 

  

 A-4 

 
succeeding calendar year, such payment will be made on the immediately preceding Business Day). Such Contract Adjustment Payments shall be payable to the
Person in whose name this Normal Units Certificate (or a Predecessor Normal Units Certificate) is registered at the close of business on the Record Date for such Payment Date. 
  
 Contract Adjustment Payments and payments on the Notes or the appropriate Treasury Consideration will be payable at the
office of the Agent in The City of New York or, at the option of the Company, by check mailed to the address of the Person entitled thereto as such address appears on the Normal Units Register or by wire transfer to the account designated by such
Person in writing. 
  
 Reference is hereby made to the further
provisions set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. 
  
 Unless the certificate of authentication hereon has been executed by the Agent by manual signature, this Normal Units 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. 
  

 A-5 

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

			
	UNUMPROVIDENT CORPORATION
		
	By:	 	 
	 	 	

	 	 	 Name:
 Title:

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

		
	By:	 	 JPMorgan Chase Bank,
 not individually but solely as Attorney-in-Fact
 of such Holder

					
			
	 	 	 By:
	 	 
	 	 	 	 	

	 	 	 	 	 Name:

	 	 	 	 	 Title:

  

 A-6 

 AGENT’S CERTIFICATE OF AUTHENTICATION 
  
 This is one of the Normal Units Certificates referred to in the within
mentioned Purchase Contract Agreement. 
  

									
	 	 	 	 	 JPMorgan Chase Bank,
 as Purchase Contract Agent

				
	Dated:                     	 	 	 	By:	 	 
	 	 	 	 	 	 	 	

	 	 	 	 	 	 	 	 	 Authorized Officer

  

 A-7 

 (Form of Reverse of Normal Units Certificate) 
  
 Each Purchase Contract evidenced hereby is governed by a Purchase Contract
Agreement, dated as of May 11, 2004, (as may be supplemented from time to time, the “Purchase Contract Agreement”), between the Company and JPMorgan Chase Bank, as Purchase Contract Agent (including its successors 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 Normal Units Certificates are, and are to be, executed and delivered. All defined terms used but not defined in this Certificate have the meanings ascribed to them in the Purchase Contract
Agreement. 
  
 Each Purchase Contract evidenced hereby obligates
the Holder of this Normal Units Certificate to purchase, and the Company to sell, on the Stock Purchase Date at a price equal to $25 (the “Purchase Price”), a number of shares of Common Stock of the Company equal to the Settlement Rate,
unless, on or prior to the Stock Purchase Date, there shall have occurred a Termination Event or a Cash Settlement, Early Settlement or Merger Early Settlement with respect to the Unit of which such Purchase Contract is a part. The “Settlement
Rate” is equal to (a) if the Applicable Market Value (as defined below) is equal to or greater than $16.95 (the “Threshold Appreciation Price”), 1.4748 shares of Common Stock per Purchase Contract, (b) if the Applicable Market Value
is less than the Threshold Appreciation Price but is greater than $14.74, the number of shares of Common Stock per Purchase Contract equal to the Purchase Price divided by the Applicable Market Value and (c) if the Applicable Market Value is equal
to or less than $14.74, 1.6961 shares of Common Stock per Purchase Contract, in each case subject to adjustment as provided in the Purchase Contract Agreement. No fractional shares of Common Stock will be issued upon settlement of Purchase
Contracts, as provided in the Purchase Contract Agreement. 
  
 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 Stock Purchase Date or, in the event of a Cash
Merger, the Cash Merger Date. 
  
 The “Closing Price” of
the Common Stock on any date of determination means the closing sale price (or, if no closing sale 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 securities exchange on which the Common Stock is so listed, or if the Common Stock is not so listed on a
United States national or regional securities exchange, 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, or, if such bid price is not available, the market value of 

  

 A-8 

 
the Common Stock on such date as determined by a nationally recognized independent investment banking firm retained for this purpose by the Company.

  
 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 at the close of business on such day. 
  
 Each Purchase Contract evidenced hereby may be settled prior to the Stock Purchase Date through Cash Settlement, Early Settlement or Merger Early
Settlement, in accordance with the terms of the Purchase Contract Agreement. 
  
 In accordance with the terms of the Purchase Contract Agreement, the Holder of this Normal Units Certificate shall pay the Purchase Price for the shares of Common Stock purchased pursuant to each Purchase Contract
evidenced hereby (i) by effecting a Cash Settlement, an Early Settlement or Merger Early Settlement, (ii) by application of payments received in respect of the Pledged Treasury Consideration acquired from the proceeds of a remarketing of the related
Pledged Notes underlying the Normal Units represented by this Normal Units Certificate as contemplated by Section 5.4 of the Purchase Contract Agreement, (iii) if the Holder has elected not to participate in the remarketing, by application of
payments received in respect of the Pledged Opt-out Treasury Consideration deposited by such Holder in respect of such Purchase Contract or (iv) if a Special Event Redemption has occurred prior to the successful remarketing of the Notes as
contemplated by Section 5.4 of the Purchase Contract Agreement, by application of payments received in respect of the Pledged Treasury Consideration purchased by the Collateral Agent on behalf of the Holder of this Normal Units Certificate. 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 aggregate Purchase Price for the shares of
Common Stock to be purchased thereunder or become entitled to exercise its rights as a secured party in the manner set forth in the Purchase Contract Agreement. If, as provided in the Purchase Contract Agreement, upon the occurrence of a Last Failed
Remarketing the Collateral Agent, for the benefit of the Company, exercises its rights as a secured creditor with respect to the Pledged Notes related to this Normal Units Certificate, any accrued and unpaid interest on such Pledged Notes will
become payable by the Company to the Holder of this Normal Units Certificate in the manner provided for 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 Notes, but only to the extent instructed by the Holders as described below. Upon receipt of notice of any meeting at which holders of Notes are entitled to vote or upon the solicitation of consents,
waivers or proxies of holders of Notes, the Agent shall, as soon as practicable thereafter, mail to the Holders of 

  

 A-9 

 
Normal Units a notice (a) containing such information as is contained in the notice or solicitation, (b) stating that each such 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 Notes entitled to vote) shall be entitled to instruct the Agent as to the exercise of the voting rights pertaining to the
Pledged Notes constituting a part of such Holder’s Normal Units and (c) stating the manner in which such instructions may be given. Upon the written request of any Holder of Normal Units 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 request the maximum number of Pledged Notes as to which any particular voting instructions are received. In the absence of specific instructions from the
Holder of a Normal Unit, the Agent shall abstain from voting the Pledged Note evidenced by such Normal Unit. 
  
 The Normal Units Certificates are issuable only in registered form and only in denominations of a single Normal Unit and any integral multiple thereof.
The transfer of any Normal Units Certificate will be registered and Normal Units Certificates may be exchanged as provided in the Purchase Contract Agreement. The Normal Units 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 of a Normal Units Certificate, but the Company and the Agent may
require payment 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 exchanges not involving any transfer as provided for in the
Purchase Contract Agreement. The Holder of a Normal Unit may substitute for the Pledged Notes or Pledged Treasury Consideration securing its obligations under the related Purchase Contract Treasury Securities in accordance with the terms of the
Purchase Contract Agreement and the Pledge Agreement. From and after such Collateral Substitution, the Unit for which such Pledged Treasury Securities secures the Holder’s obligation under the Purchase Contract shall be referred to as a
“Stripped Unit.” A Holder that elects to substitute Treasury Securities for Pledged Notes or Pledged Treasury Consideration, thereby creating Stripped Units, shall be responsible for any fees or expenses payable in connection therewith.
Except as provided in the Purchase Contract Agreement, for so long as the Purchase Contract underlying a Normal Unit remains in effect, such Normal Unit shall not be separable into its constituent parts, and the rights and obligations of the Holder
of such Normal Units in respect of the Pledged Note or Pledged Treasury Consideration and Purchase Contract comprising such Normal Unit may be acquired, and may be transferred and exchanged, only as a Normal Unit. 
  
 A Holder of Stripped Units may reestablish Normal Units at any time from and
after the date of the Purchase Contract Agreement and on or prior to the seventh Business Day immediately preceding the Stock Purchase Date by depositing with the Collateral Agent the Notes or the appropriate Treasury Consideration in exchange for
the release of the Pledged Treasury Securities in accordance with the terms of the Purchase Contract Agreement and the Pledge Agreement. 
  

 A-10 

 Subject to the next succeeding paragraph, the Company shall pay, on each Payment Date, the Contract
Adjustment Payments, if any, payable in respect of each Purchase Contract to the Person in whose name the Normal Units Certificate (or one or more Predecessor Normal Units Certificates) evidencing such Purchase Contract is registered on the Normal
Units Register at the close of business on the Record Date next preceding such Payment Date. The Contract Adjustment Payments, if any, will be payable at the Corporate Trust Office or such other office or agency designated as set forth in the
Purchase Contract Agreement 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 Normal Units Register or by wire transfer to the account designated by
such Person in writing. 
  
 The Company shall have the right, at
any time prior to the Stock Purchase 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 each such Contract Adjustment Payments as provided in the Purchase Contract Agreement. Any Contract Adjustment Payments so deferred shall, to the extent permitted by law, accrue additional Contract Adjustment Payments thereon at the rate of
8.25% per year (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, if any, 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 Stock Purchase Date and no such deferral period may end other than on a Payment Date.

  
 In the event that the Company elects to defer the payment of
Contract Adjustment Payments on the Purchase Contracts until a Payment Date prior to the Stock Purchase Date, then all Deferred Contract Adjustment Payments, if any, shall be payable to the registered Holders as of the close of business on the
Record Date immediately preceding such Payment Date. 
  
 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 in the manner and to the extent set forth in the Purchase Contract Agreement. 
  
 In the event that the Company elects to defer the payment of Contract Adjustment Payments on the Purchase Contracts until the Stock Purchase Date, the Holder of this Normal Units Certificate will receive on the Stock
Purchase Date, in lieu of a cash payment, a number of shares of Common Stock (in addition to the number of shares of Common Stock equal to the Settlement Rate) equal to (i) the aggregate amount 

  

 A-11 

 
of Deferred Contract Adjustment Payments payable to the Holder of this Normal Units Certificate divided by (ii) the Applicable Market Value. 
  
 In the event the Company exercises its option to defer the payment of
Contract Adjustment Payments, then, until the earlier of (x) the Termination Date and (y) the date on which the Deferred Contract Adjustment Payments have been paid, the Company shall not, and will not permit any subsidiary of the Company to,
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 other than (i) repurchases, redemptions or acquisitions of shares
of the Company’s Capital Stock 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 the Company exercises its rights to defer the Contract Adjustment Payments; (ii) as a result of a reclassification of the Company’s
Capital Stock or the exchange or conversion 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 any series of the
Company’s Capital Stock pursuant to the conversion or exchange provisions of such Capital Stock or the security being converted or exchanged; (iv) dividends or distributions in any series of the Company’s Capital Stock (or rights to
acquire Capital Stock) or repurchases, acquisitions or redemptions of the Company’s Capital Stock in connection with the issuance or exchange of any series of the Company’s Capital Stock (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 stockholder rights plan or the declaration or payment thereunder of a dividend or distribution of or with respect to rights
in the future, or the redemption or repurchase of any rights pursuant thereto. 
  
 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 accumulated Contract Adjustment Payments, if any, or
any Deferred Contract Adjustment Payments and the obligations of the Holders to purchase shares of 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 Stock Purchase 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 Normal Units Register. Upon and after the occurrence of a Termination Event, the Collateral Agent shall release the Pledged Notes or Pledged Treasury Consideration from
the Pledge in accordance with the provisions of the Pledge Agreement. 
  
 The Company has agreed to pay Liquidated Damages (as defined in the Registration Rights Agreement) with respect to the Units under the circumstances described in the terms and conditions of Section 8 of the Registration Rights Agreement.

  

 A-12 

 Whenever in this Normal Units Certificate there is a reference, in any context, to a Contract Adjustment
Payment, such mention shall be deemed to include mention of the payment of Liquidated Damages payable as described in the preceding paragraph to the extent that, in such context, Liquidated Damages are, were or would be payable in respect of such
Normal Units Certificate and express mention of the payment of Liquidated Damages (if applicable) in any provisions of this Normal Units Certificate shall not be construed as excluding Liquidated Damages in those provisions of this Normal Units
Certificate where such express mention is not made. If this Security is a Registrable Security and the Holder of this Normal Units Certificate [if this Normal Units Certificate is a Global Certificate, then insert – (including any Person
that has a beneficial interest in this Certificate)] elects to sell this Security pursuant to the Shelf Registration Statement then, by its acceptance hereof, such Holder of this Security agrees to be bound by the terms of the Registration Rights
Agreement relating to the Registrable Securities which are the subject of such election. 
  
 Upon registration of transfer of this Normal Units 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, the Purchase Contracts evidenced hereby and the Pledge Agreement and the transferor shall be released from the obligations under the Purchase Contract
Agreement, the Purchase Contracts evidenced by this Normal Units Certificate and the Pledge Agreement. 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 Normal Units Certificate, by its
acceptance hereof, irrevocably authorizes the Agent to enter into and perform the related Purchase Contracts forming part of the Normal Units evidenced hereby on his behalf as his attorney-in-fact, expressly withholds any consent to the assumption
(i.e., affirmance) of the Purchase Contracts by the Company or its trustee in the event that the Company becomes the subject of a case under the Bankruptcy Code, agrees to be bound by the terms and provisions thereof, covenants and agrees to
perform such Holder’s obligations under such Purchase Contracts, consents to the provisions of the Purchase Contract Agreement, irrevocably authorizes the Agent to enter into and perform the Pledge Agreement on such Holder’s behalf as
attorney-in-fact, and consents to the Pledge of the Notes or the appropriate Treasury Consideration underlying this Normal Units Certificate pursuant to the Pledge Agreement. The Holder 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 Pledged Notes or the Pledged Treasury Consideration to be paid upon settlement of such Holder’s
obligations to purchase shares of Common Stock under the Purchase Contract, shall be paid on the Stock Purchase Date 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 obligations of each Holder to pay the Purchase Price are non-recourse obligations and except to the extent paid by Cash 

  

 A-13 

 
Settlement, Early Settlement or Merger Early Settlement, are payable solely out of the proceeds of any Collateral pledged to secure the obligations of the
Holders and in no event will Holders be liable for any deficiency between such payments and the Purchase Price. Notwithstanding anything to the contrary herein, 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 of the related Unit unless the Company shall have (i) received payment in full of the aggregate Purchase Price for the shares of Common Stock to be purchased thereunder by such
Holder in the manner herein set forth or (ii) become entitled to exercise its rights as a secured party under Section 5.4(b)(iii) of the Purchase Contract Agreement. 
  
 Each Holder of any Units, and each Beneficial Owner thereof, by its acceptance thereof or of its interest therein, further
agrees (i) to treat itself as the owner of the related Notes, Treasury Consideration or Treasury Securities, as the case may be, (ii) to treat the Notes as indebtedness of the Company and (iii) to allocate 100.00% of the Unit issue price to the
Notes constituting part of the Units and 0.00% to the related Purchase Contracts, in each case, 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 outstanding Purchase Contracts. 
  
 The Purchase Contracts shall for all purposes be governed by, deemed to be a contract under, and construed in accordance with, the laws of the State of New York. 
  
 The Company, the Agent and its Affiliates and any agent of the Company or the Agent may treat the Person in whose name this
Normal Units Certificate is registered as the owner of the Normal Units evidenced hereby for the purpose of receiving quarterly payments of interest on the Notes or the Treasury Consideration, as the case may be, receiving payments of Contract
Adjustment Payments, if any, 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, such Affiliates nor any such agent shall be affected by notice to the contrary. 
  
 The Purchase Contracts shall not, prior to the settlement thereof, 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. 
  

 A-14 

 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. 
  

 A-15 

 ASSIGNMENT 
  

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 Normal Units Certificates and all rights thereunder, hereby irrevocably constituting and appointing
                                
                                       
                                      attorney to transfer
said Normal Units Certificates on the books of UnumProvident Corporation 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 Normal Units Certificates in every particular, without alteration or
enlargement or any change whatsoever.

  

			
	 Signature Guarantee:
	 	 
	 	 	

  

 A-16 

 SETTLEMENT INSTRUCTIONS 
  
 The undersigned Holder directs that a certificate for shares of Common Stock deliverable upon settlement on or after the
Stock Purchase Date of the Purchase Contracts underlying the number of Normal Units evidenced by this Normal Units 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)

			
	If shares are to be registered in the 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:	 	 	 	 REGISTERED HOLDER
  
 Please print name and address of Registered
 Holder:

			
	 	 	 	 	 
	
	 	 	 	

	Name	 	 	 	Name
			
	 	 	 	 	 
	
	 	 	 	

	Address	 	 	 	Address
			
	Social Security or other Taxpayer Identification Number, if any	 	 	 	 

  

 A-17 

 ELECTION TO SETTLE EARLY 
  
 The undersigned Holder of this Normal Units 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 Normal Units evidenced by this Normal Units Certificate specified below. The option to effect Early Settlement may be
exercised only with respect to Purchase Contracts underlying Normal Units with an aggregate Purchase Price equal to $1,000 or an integral multiple thereof. 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 Normal Units Certificate representing any Normal Units 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 Notes or Pledged Treasury Consideration and any net cash, securities or other property
deliverable upon such Early Settlement will be transferred in accordance with the transfer instructions set forth below. If shares of Common Stock 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:	 	 	 	 	 	Signature Guarantee:	 	 
	 	 	
	 	 	 	 	 	

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

			
	If shares of Common Stock are to be registered in the name of and delivered to and Pledged Notes or Pledged Treasury Consideration, net cash, securities or other property are to be transferred
to a Person other than the Holder, please print such Person’s name and address:	    	 REGISTERED HOLDER
  
 Please print name and address of Registered
 Holder:

		
	 	    	 
	

	Name	    	Name
		
	 	    	 
	

	Address	    	Address
		
	Social Security or other Taxpayer Identification Number, if any	    	 

  
 Transfer instructions for Pledged
Notes or Pledged Treasury Consideration transferable upon Early Settlement or a Termination Event: 
  

 A-18 

 [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: 
  

									
	 Date

	 	 Amount of
Decrease in
Stated Amount
of the Global
Certificate

	 	 Amount of
Increase in
Stated Amount
of the Global
Certificate

	  	Stated Amount
of the Global
Certificate
Following Such
Decrease or
Increase

	  	Signature of
Authorized
Officer of 
Agent

  

 A-19 

 EXHIBIT B 
 FORM OF STRIPPED UNITS CERTIFICATE 
  
 [Restricted Security Legend: If the Unit is a Restricted Security, insert — THE UNITS, THE PURCHASE CONTRACTS, THE NOTES AND THE COMMON STOCK DELIVERABLE IN SETTLEMENT OF THE PURCHASE CONTRACTS (EACH, A
“SECURITY”, AND TOGETHER, THE “SECURITIES”) WERE SOLD IN A PRIVATE PLACEMENT, WITHOUT REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY OTHER APPLICABLE SECURITIES LAWS AND MAY NOT
BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER FURTHER AGREES THAT THESE SECURITIES SHALL NOT BE TRANSFERRED TO A SUBSEQUENT PURCHASER PURSUANT TO RULE 144A UNDER THE
SECURITIES ACT. EACH PURCHASER OF THIS SECURITY WILL BE DEEMED TO REPRESENT THAT IT HAS BEEN AFFORDED AN OPPORTUNITY TO INVESTIGATE MATTERS RELATING TO THE COMPANY AND THIS SECURITY, THAT IT IS NOT ACQUIRING THIS SECURITY WITH A VIEW TO ANY
DISTRIBUTION THEREOF AND THAT IT IS A QUALIFIED INSTITUTIONAL BUYER (“QIB”) WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT WHICH IS ACQUIRING THIS SECURITY FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF ONE OR MORE ACCOUNTS, EACH OF
WHICH IS A QIB AND WITH RESPECT TO WHICH IT HAS SOLE INVESTMENT DISCRETION.] 
  
 [If a Global Certificate, insert — THIS CERTIFICATE IS A GLOBAL CERTIFICATE WITHIN THE MEANING OF THE PURCHASE CONTRACT AGREEMENT (AS DEFINED ON THE REVERSE HEREOF) AND IS REGISTERED IN THE NAME OF A 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.] 
  
 [SO LONG AS DTC IS THE DEPOSITARY, INSERT — 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. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE 

  

 B-1 

 
DEPOSITORY TRUST COMPANY, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.] 
  
 [If a Global Certificate, insert
— UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR CERTIFICATES IN DEFINITIVE REGISTERED FORM IN THE LIMITED CIRCUMSTANCES REFERRED TO IN THE PURCHASE CONTRACT AGREEMENT, THIS GLOBAL CERTIFICATE MAY NOT BE TRANSFERRED
EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH
SUCCESSOR DEPOSITARY.] 
  

 B-2 

 (Form of Face of Stripped Units Certificate) 
  
 UnumProvident Corporation 
  
 8.25% Adjustable Conversion-Rate Equity Security Unit 
  

			
	 No.
	  	CUSIP No. [                         ]
	 Number of Stripped Units
	  	 

  
 This Stripped Units
Certificate certifies that              (the “Holder”) is the registered Holder of the number of Stripped Units set forth above [If the Certificate is a Global
Certificate, insert - , as such number may be increased or decreased as set forth on the Schedule of Increases or Decreases in Global Certificate annexed hereto]. Each Stripped Unit represents (i) a 1/40 undivided beneficial ownership interest
in a Treasury Security, subject to the Pledge of such interest in such Treasury Security by such Holder pursuant to the Pledge Agreement, and (ii) the rights and obligations of the Holder under one Purchase Contract with UnumProvident Corporation, a
Delaware corporation (the “Company”). Each Stripped Unit will have a stated amount of $25 (the “Stated Amount”). All capitalized terms used herein which are defined in the Purchase Contract Agreement have the meaning set forth
therein. 
  
 Pursuant to the Pledge Agreement, the Treasury
Security constituting part of each Stripped Unit evidenced hereby has 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 part of such Stripped Unit
to purchase shares of Common Stock of the Company. Prior to the purchase of shares of Common Stock under each Purchase Contract, such Purchase Contracts shall not entitle the Holders of Stripped Units Certificates to any of the rights of a holder of
shares of Common Stock, including without limitation, the right to vote or receive any dividends or other payments or to consent or to receive notice as stockholders in respect of the meetings of stockholders, or for the election of directors of the
Company or for any other matter or any other rights whatsoever as stockholder of the Company. 
  
 Each Purchase Contract evidenced hereby obligates the Holder of this Stripped Units Certificate to purchase, and the Company to sell, on May 15, 2007 (the “Stock Purchase Date”), at a price equal to $25 (the
“Purchase Price”), a number of shares of Common Stock, par value $0.10 per share (“Common Stock”), of the Company, equal to the Settlement Rate, unless on or prior to the Stock Purchase Date there shall have occurred a
Termination Event or an Early Settlement or Merger Early Settlement with respect to the Stripped Units of which such Purchase Contract is a part, all as provided in the Purchase Contract Agreement and more fully described on the reverse hereof. The
Purchase Price (as defined herein) for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced hereby, if not paid earlier, shall be paid on the Stock Purchase Date by application of payments received in respect of the

  

 B-3 

 
Pledged Treasury Securities pledged to secure the obligations of the Holder under such Purchase Contract in accordance with the terms of the Pledge
Agreement. 
  
 The Company shall pay on each Payment Date in
respect of each Purchase Contract forming part of a Stripped Unit evidenced hereby an amount (the “Contract Adjustment Payments”) equal to 3.165% per year 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 on the reverse hereof (provided that if on any date on which Contract Adjustment Payments are to be made on the
Purchase Contracts is not a Business Day, then payment of the Contract Adjustment Payments payable on that date will be made on the next succeeding day which is a Business Day, and no interest or payment will be paid in respect of the delay, except
that if such next succeeding Business Day is in the next succeeding calendar year, such payment will be made on the immediately preceding Business Day). Such Contract Adjustment Payments shall be payable to the Person in whose name this Stripped
Units Certificate (or a Predecessor Stripped Units Certificate) is registered at the close of business on the Record Date for such Payment Date. 
  
 Contract Adjustment Payments will be payable at the office of the Agent in the City of New York or, at the option of the Company, by check mailed to the
address of the Person entitled thereto as such address appears on the Stripped Units Register or by wire transfer to the account designated by such Person in writing. 
  
 Reference is hereby made to the further provisions set forth on the reverse hereof, which further provisions shall for all
purposes have the same effect as if set forth at this place. 
  
 Unless the certificate of authentication hereon has been executed by the Agent by manual signature, this Stripped Units 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-4 

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

			
	 UNUMPROVIDENT CORPORATION

		
	 By:
	 	 
	 	 	

	 	 	 Name:

	 	 	 Title:

  

			
	HOLDER SPECIFIED ABOVE (as to obligations of such Holder under the Purchase Contracts evidenced hereby)
		
	 By:
	 	JPMorgan Chase Bank, not individually but solely as Attorney-in-Fact of such Holder

  

			
		
	 By:
	 	 
	 	 	

	 	 	 Name:

	 	 	 Title:

  

 B-5 

 AGENT’S CERTIFICATE OF AUTHENTICATION 
  
 This is one of the Stripped Units Certificates referred to in the
within-mentioned Purchase Contract Agreement. 
  
 Dated:
                     
  

			
	 JPMorgan Chase Bank,
 as Purchase
Contract Agent

		
	 By:
	 	 
	 	 	

	 	 	 Authorized Officer

  

 B-6 

 (Form of Reverse of Stripped Units Certificate) 
  
 Each Purchase Contract evidenced hereby is governed by a Purchase Contract
Agreement, dated as of May 11, 2004 (as may be supplemented from time to time, the “Purchase Contract Agreement”), between the Company and JPMorgan Chase Bank, as Purchase Contract Agent (including its successors thereunder, herein called
the “Agent”), to which the 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 Stripped Units Certificates are, and are to be, executed and delivered. All defined terms used but not defined in this Certificate have the meanings ascribed to them in the Purchase
Contract Agreement. 
  
 Each Purchase Contract evidenced hereby
obligates the Holder of this Stripped Units Certificate to purchase, and the Company to sell, on the Stock Purchase Date at a price equal to $25 (the “Purchase Price”), a number of shares of Common Stock of the Company equal to the
Settlement Rate, unless, on or prior to the Stock Purchase Date, there shall have occurred a Termination Event, an Early Settlement or Merger Early Settlement with respect to the Unit of which such Purchase Contract is a part. The “Settlement
Rate” is equal to (a) if the Applicable Market Value (as defined below) is equal to or greater than $16.95 (the “Threshold Appreciation Price”), 1.4748 shares of Common Stock per Purchase Contract, (b) if the Applicable Market Value
is less than the Threshold Appreciation Price but is greater than $14.74, the number of shares of Common Stock per Purchase Contract equal to the Purchase Price divided by the Applicable Market Value and (c) if the Applicable Market Value is equal
to or less than $14.74, 1.6961 shares of Common Stock per Purchase Contract, in each case subject to adjustment as provided in the Purchase Contract Agreement. No fractional shares of Common Stock will be issued upon settlement of Purchase
Contracts, as provided in the Purchase Contract Agreement. 
  
 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 Stock Purchase Date or in the event of a Cash
Merger, the Cash Merger Date. 
  
 The “Closing Price” of
the Common Stock on any date of determination means the closing sale price (or, if no closing sale 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 securities exchange on which the Common Stock is so listed, or if the Common Stock is not so listed on a
United States national or regional securities exchange, 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, or, if such bid price is not available, the market value of 

  

 B-7 

 
the Common Stock on such date as determined by a nationally recognized independent investment banking firm retained for this purpose by the Company.

  
 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 at the close of business of such day. 
  
 Each Purchase Contract evidenced hereby may be settled prior to the Stock Purchase Date through Early Settlement or Merger Early Settlement, in accordance
with the terms of the Purchase Contract Agreement. 
  
 In
accordance with the terms of the Purchase Contract Agreement, the Holder of this Stripped Units Certificate shall pay the Purchase Price for the shares of Common Stock purchased pursuant to each Purchase Contract evidenced hereby (i) by effecting an
Early Settlement or Merger Early Settlement or (ii) by application of payments received in respect of the Pledged Treasury Securities underlying the Stripped Units represented by this Stripped Units Certificate. 
  
 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 aggregate Purchase Price for the shares of Common Stock to be purchased thereunder in the manner herein set forth.

  
 The Stripped Units Certificates are issuable only in
registered form and only in denominations of a single Stripped Unit and any integral multiple thereof. The transfer of any Stripped Units Certificate will be registered and Stripped Units Certificates may be exchanged as provided in the Purchase
Contract Agreement. The Stripped Units 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 of a Stripped Units 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 exchanges not involving any transfer as provided for in the Purchase Contract Agreement. The Holder of a Stripped Unit may substitute for the Pledged Treasury Securities securing its
obligations under the related Purchase Contract Notes or the appropriate Treasury Consideration in accordance with the terms of the Purchase Contract Agreement and the Pledge Agreement. From and after such Collateral Substitution, the Unit for which
such Pledged Notes or Pledged Treasury Consideration secures the Holder’s obligation under the Purchase Contract shall be referred to as a “Normal Unit.” A Holder that elects to substitute Notes or the appropriate Treasury
Consideration for Pledged Treasury Securities, thereby reestablishing Normal Units, shall 

  

 B-8 

 
be responsible for any fees or expenses payable in connection therewith. Except as provided in the Purchase Contract Agreement, for so long as the Purchase
Contract underlying a Stripped Unit remains in effect, such Stripped Unit shall not be separable into its constituent parts, and the rights and obligations of the Holder of such Stripped Unit in respect of the Pledged Treasury Security and the
Purchase Contract comprising such Stripped Unit may be acquired, and may be transferred and exchanged, only as a Stripped Unit. 
  
 A Holder of Normal Units may establish Stripped Units at any time from and after the date of the Purchase Contract Agreement and on or prior to the
seventh Business Day immediately preceding the Stock Purchase Date by depositing with the Collateral Agent Treasury Securities in exchange for the release of the Pledged Notes or the appropriate Pledged Treasury Consideration 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, if any, payable in respect of each Purchase Contract to the Person in whose name the Stripped Units Certificate (or one
or more Predecessor Stripped Units Certificates) evidencing such Purchase Contract is registered on the Stripped Units Register at the close of business on the Record Date next preceding such Payment Date. Contract Adjustment Payments, if any, will
be payable at the Corporate Trust Office or such other office or agency designated as set forth in the Purchase Contract Agreement 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 Stripped Units Register or by wire transfer to the account designated by such Person in writing. 
  
 The Company shall have the right, at any time prior to the Stock Purchase 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 each such Contract Adjustment Payments as provided in the Purchase Contract Agreement. Any Contract
Adjustment Payments so deferred shall, to the extent permitted by law, accrue additional Contract Adjustment Payments thereon at the rate of 8.25% per year (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, if any, 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 Stock Purchase Date and no such deferral period may end other than on a Payment Date. 
  
 In the event that the Company elects to defer the payment of Contract Adjustment Payments on the Purchase Contracts until a Payment Date prior to the
Stock 

  

 B-9 

 
Purchase Date, then all Deferred Contract Adjustment Payments, if any, shall be payable to the registered Holders as of the close of business on the Record
Date immediately preceding such Payment Date. 
  
 In the event
that the Company elects to defer the payment of Contract Adjustment Payments on the Purchase Contracts until the Stock Purchase Date, the Holder of this Stripped Units Certificate will receive on the Stock Purchase Date, in lieu of a cash payment, a
number of shares of Common Stock (in addition to the number of shares of Common Stock equal to the Settlement Rate) equal to (i) the aggregate amount of Deferred Contract Adjustment Payments payable to the Holder of this Stripped Units Certificate
divided by (ii) the Applicable Market Value. 
  
 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 in the manner and to the extent set forth in the Purchase Contract Agreement. 
  
 In the event the Company exercises its option to defer the payment of Contract Adjustment Payments, then, until the earlier of (x) the Termination Date and (y) the date on which the Deferred Contract Adjustment
Payments have been paid, the Company shall not, and will not permit any subsidiary of the Company to, 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 other than (i) repurchases, redemptions or acquisitions of shares of the Company’s Capital Stock 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 the Company exercises its rights to
defer the Contract Adjustment Payments; (ii) as a result of a reclassification of the Company’s Capital Stock or the exchange or conversion 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 such Capital Stock or the security being converted or exchanged; (iv)
dividends or distributions in any series of the Company’s Capital Stock (or rights to acquire Capital Stock) or repurchases, acquisitions or redemptions of the Company’s Capital Stock in connection with the issuance or exchange of any
series of the Company’s Capital Stock (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 stockholder rights plan or the
declaration or payment thereunder of a dividend or distribution of or with respect to rights in the future, or the redemption or repurchase of any rights pursuant thereto. 
  
 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 

  

 B-10 

 
accumulated Contract Adjustment Payments, if any, or any Deferred Contract Adjustment Payments, and the obligations of the Holders to purchase shares of
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 Stock Purchase 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 Stripped Units
Register. Upon and after the occurrence of a Termination Event, the Collateral Agent shall release the Pledged Treasury Securities from the Pledge in accordance with the provisions of the Pledge Agreement. 
  
 The Company has agreed to pay Liquidated Damages (as defined in the
Registration Rights Agreement) with respect to the Units under the circumstances described in the terms and conditions of Section 8 of the Registration Rights Agreement. 
  
 Whenever in this Stripped Units Certificate there is a reference, in any context, to a Contract Adjustment Payment, such
mention shall be deemed to include mention of the payment of Liquidated Damages payable as described in the preceding paragraph to the extent that, in such context, Liquidated Damages are, were or would be payable in respect of such Stripped Units
Certificate and express mention of the payment of Liquidated Damages (if applicable) in any provisions of this Stripped Units Certificate shall not be construed as excluding Liquidated Damages in those provisions of this Stripped Units Certificate
where such express mention is not made. If this Stripped Units Certificate is a Registrable Security and the Holder of this Stripped Units Certificate [if this Certificate is a Global Certificate, then insert – (including any Person that
has a beneficial interest in this Certificate)] elects to sell this Security pursuant to the Shelf Registration Statement then, by its acceptance hereof, such Holder of this Security agrees to be bound by the terms of the Registration Rights
Agreement relating to the Registrable Securities which are the subject of such election. 
  
 Upon registration of transfer of this Stripped Units 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, the Purchase Contracts evidenced hereby and the Pledge Agreement and the transferor shall be released from the obligations under the Purchase Contract
Agreement, the Purchase Contracts evidenced by this Stripped Units Certificate and the Pledge Agreement. The Company covenants and agrees, and the Holder, by his acceptance hereof, likewise covenants and agrees, to be bound by the provisions of this
paragraph. 
  
 The Holder of this Stripped Units Certificate, by
its acceptance hereof, irrevocably authorizes the Agent to enter into and perform the related Purchase Contracts forming part of the Stripped Units evidenced hereby on his behalf as its attorney-in-fact, expressly withholds any consent to the
assumption (i.e., affirmance) of the Purchase 

  

 B-11 

 
Contracts by the Company or its trustee in the event that the Company becomes the subject of a case under the Bankruptcy Code, agrees to be bound by the
terms and provisions thereof, covenants and agrees to perform such Holder’s obligations under such Purchase Contracts, consents to the provisions of the Purchase Contract Agreement, irrevocably authorizes the Agent to enter into and perform the
Pledge Agreement on such Holder’s behalf as attorney-in-fact, and consents to the Pledge of the Treasury Securities underlying this Stripped Units Certificate pursuant to the Pledge Agreement. The Holder 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 Pledged Treasury Securities, to be paid upon settlement of such Holder’s obligations
to purchase shares of Common Stock under the Purchase Contract, shall be paid on the Stock Purchase Date 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 obligations of each Holder to pay the Purchase Price are non-recourse obligations and except to the extent paid by Early Settlement or Merger Early Settlement, are payable solely out of the
proceeds of any Collateral pledged to secure the obligations of the Holders and in no event will Holders be liable for any deficiency between such payments and the Purchase Price. 
  
 Each Holder of any Units, and each Beneficial Owner thereof, by its acceptance thereof or of its interest therein, further
agrees (i) to treat itself as the owner of the related Notes, Treasury Consideration or Treasury Securities, as the case may be, (ii) to treat the Notes as indebtedness of the Company and (iii) to allocate 100.00% of the Unit issue price to the
Notes constituting part of the Units and 0.00% to the related Purchase Contracts, in each case, 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. 
  
 The Purchase
Contracts shall for all purposes be governed by and deemed to be a contract under, and construed in accordance with, the laws of the State of New York. 
  
 The Company, the Agent and its Affiliates and any agent of the Company or the Agent may treat the Person in whose name this Stripped Units Certificate is
registered as the owner of the Stripped Units evidenced hereby for the purpose of receiving any 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, such Affiliate, nor any such agent shall be affected by notice to the contrary. 
  

 B-12 

 The Purchase Contracts shall not, prior to the settlement thereof, 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. 
  

 B-13 

 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. 
  

 B-14 

 ASSIGNMENT 
  

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 Stripped Units Certificates and all
rights thereunder, hereby irrevocably constituting and appointing
                                     attorney to transfer said
Stripped Units Certificates on the books of UnumProvident Corporation 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 Stripped Units Certificates in every particular, without alteration
or enlargement or any change whatsoever.

  

			
	 Signature Guarantee:
	  	 
	 	 	

  

 B-15 

 SETTLEMENT INSTRUCTIONS 
  
 The undersigned Holder directs that a certificate for shares of Common Stock deliverable upon settlement on or after the
Stock Purchase Date of the Purchase Contracts underlying the number of Stripped Units evidenced by this Stripped Units 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)

  

					
	If shares are to be registered in the 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:	 	 	 	 REGISTERED HOLDER
  
 Please print name and address of Registered Holder:

			
	  	 	 	 	  
	
	 	 	 	

	Name	 	 	 	Name
			
	  	 	 	 	  
	
	 	 	 	

	Address	 	 	 	Address
			
	Social Security or other Taxpayer Identification Number, if any	 	 	 	 

  

 B-16 

 ELECTION TO SETTLE EARLY 
  
 The undersigned Holder of this Stripped Units 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 Stripped Units evidenced by this Stripped Units Certificate specified below. The option to effect Early Settlement may be
exercised only with respect to Purchase Contracts underlying Stripped Units with an aggregate Purchase Price equal to $1,000 or an integral multiple thereof. 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 Stripped Units Certificate representing any Stripped Units 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 and any net cash, securities or other property deliverable upon
such Early Settlement will be transferred in accordance with the transfer instructions set forth below. If shares of Common Stock 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:	 	 
	 	 	 	 	 	 	 	 	

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

					
	If shares of Common Stock are to be registered in the name of and delivered to and Pledged Treasury Securities, net cash, securities or other property are to be transferred to a Person other
than the Holder, please print such Person’s name and address:	 	 	 	 REGISTERED HOLDER
  
 Please print name and address of Registered Holder:

			
	  	 	 	 	  
	
	 	 	 	

	Name	 	 	 	Name
			
	  	 	 	 	  
	
	 	 	 	

	Address	 	 	 	Address
			
	Social Security or other Taxpayer Identification Number, if any	 	 	 	 

  
 Transfer instructions for Pledged
Treasury Securities, transferable upon Early Settlement or a Termination Event: 
  

 B-17 

 [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: 
  

									
	 Date

	  	Amount of Decrease in
Stated Amount of the
Global Certificate

	  	Amount of Increase in
Stated Amount of the
Global Certificate

	  	Stated Amount of the
Global Certificate Following
Such Decrease or Increase

	  	Signature of Authorized
Officer of Agent

  

 B-18 

 EXHIBIT C 
  

INSTRUCTION FROM PURCHASE CONTRACT AGENT TO COLLATERAL AGENT 
  
 BNY Midwest Trust Company 
 2 North LaSalle
Street 
 Suite 1020 
 Chicago, Illinois 60602 
  
 Attention: Corporate Trust Administration 
  

	 	Re:	8.25% Adjustable Conversion-Rate Equity 

	 	    	Security Units of UnumProvident Corporation (the “Company”) 

  

We hereby notify you in accordance with Section [4.1][4.2] of the Pledge Agreement, dated as of May 11, 2004, among the Company, you, as Collateral
Agent, Custodial Agent and Securities Intermediary, and us, as Purchase Contract Agent and as attorney-in-fact for the holders of [Normal Units] [Stripped Units] from time to time, that the holder of securities listed below (the “Holder”)
has elected to substitute [$              aggregate principal amount of Treasury Securities (CUSIP No. [    ])]
[$             principal amount of Notes or the appropriate Treasury Consideration, as the case may be,] in exchange for the related [Pledged Notes or Pledged Treasury Consideration]
[Pledged Treasury Securities (CUSIP No. [            ]),] held by you in accordance with the Pledge Agreement and has delivered to us a notice stating that the Holder has transferred
[Treasury Securities] [Notes or the appropriate Treasury Consideration] to you, as Collateral Agent. We hereby instruct you, upon receipt of such [Pledged Treasury Securities] [Pledged Notes or Pledged Treasury Consideration], and upon the payment
by such Holder of any applicable fees, to release the [Notes or Treasury Consideration, as the case may be,] [Treasury Securities] related to such [Normal Units] [Stripped Units] to us in accordance with the Holder’s instructions. Capitalized
terms used herein but not defined shall have the meaning set forth in the Purchase Contract Agreement. 
  
 Date:                       
  

			
	 JPMorgan Chase Bank,
 As Purchase Contract Agent under the Purchase Contract Agreement, dated as of May 11, 2004, between the Company and the Purchase Contract Agent

		
	By:	 	 
	 	 	

	 	 	 Name:

	 	 	 Title:

  

 C-1 

 Please print name and address of Registered Holder electing to substitute [Treasury Securities] [Notes or Treasury
Consideration, as the case may be,] for the [Pledged Notes or Pledged Treasury Consideration, as the case may be,] [Pledged Treasury Securities]: 
  
 Name 
  
 Address 
  
 Social Security or other Taxpayer Identification 
 Number, if any 
  

 C-2 

 EXHIBIT D 
  

INSTRUCTION TO PURCHASE CONTRACT AGENT 
  
 JPMorgan Chase Bank, 
   as Purchase Contract Agent 
 4 New York Plaza New York, 
 New York 10004 
  
 Attention: Institutional Trust Services 
  

	 	Re:	8.25% Adjustable Conversion-Rate Equity 

	 	    	Security Units of UnumProvident Corporation (the “Company”) 

  

The undersigned Holder hereby notifies you, as Purchase Contract Agent under the Purchase Contract Agreement, dated as of May 11, 2004, between the
Company and you, that it has delivered to BNY Midwest Trust Company, as Collateral Agent, Custodial Agent and Securities Intermediary [$             aggregate principal amount of
Treasury Securities] [$             principal amount of Notes or the appropriate Treasury Consideration, as the case may be,] in exchange for the related [Pledged Notes or Pledged
Treasury Consideration, 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 11, 2004, among you, the Company and the Collateral Agent. The
undersigned Holder has paid the Collateral Agent all applicable fees relating to such exchange. The undersigned Holder hereby instructs you to instruct the Collateral Agent to release to you on behalf of the undersigned Holder the [Pledged Notes or
Pledged Treasury Consideration, as the case may be,] [Pledged Treasury Securities] related to such [Normal Units] [Stripped Units]. Capitalized terms used herein but not defined shall have the meaning set forth in the Purchase Contract Agreement.

  

									
	Date:	 	 	 	 
					
	 	 	 	 	 	 	By:	 	 
	 	 	 	 	 	 	 	 	

	 	 	 	 	 	 	Signature Guarantee:	 	 
	 	 	 	 	 	 	 	 	

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

  

 EXHIBIT E 
  

NOTICE TO SETTLE BY SEPARATE CASH 
  
 JPMorgan Chase Bank, as Purchase Contract Agent 
 4 New York Plaza New York,

 New York 10004 
  
 Attention: Institutional Trust Services 
  

	 	Re:	8.25% Adjustable Conversion-Rate Equity 

	 	    	Security Units of UnumProvident Corporation (the “Company”) 

  

The undersigned Holder hereby notifies you in accordance with Section 5.4 of the Purchase Contract Agreement, dated as of May 11, 2004, between the
Company and you, 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 Stock Purchase Date, (in lawful money of the United States by certified or
cashier’s check or wire transfer, in each case 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 Stock Purchase Date. The undersigned Holder hereby instructs you to notify promptly the Collateral Agent of the undersigned Holder’s election to make such cash settlement with respect to the
Purchase Contracts related to such Holder’s Normal Units. Capitalized terms used herein but not defined shall have the meaning set forth in the Purchase Contract Agreement. 
  
 Date:                     

			
		
	By:	 	 
	 	 	

		
	Signature Guarantee:	 	 
	 	 	

  
 Dated:
                     
  
 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
	 	 	 	 	 	 

  

 EXHIBIT F 
  

FORM OF CERTIFICATION FOR TRANSFER 
 OR
EXCHANGE OF CERTIFICATE 
 (Transfers and exchanges pursuant to Section 2.1(e) or 3.6 of the Purchase Contract Agreement) 
  
 UnumProvident Corporation 
 1 Fountain Square 
 Chattanooga, Tennessee 37402. 
  
 JPMorgan Chase Bank, 
   as Trustee

 4 New York Plaza 
 15th Floor 
 New York, New York 10004. 
  

	 	Re:	UnumProvident Corporation 

	 	    	8.25% Adjustable Conversion-Rate Equity Security Units 

	 	    	CUSIP No. [            ] 

  
 Reference is hereby made to the Purchase Contract Agreement, dated as of May 11, 2004 (together, the “Agreement”),
between UnumProvident Corporation and JPMorgan Chase Bank, as Purchase Contract Agent. Capitalized terms used but not defined herein shall have the meanings given to them in the Agreement. 
  
 This letter relates to
U.S.$                     stated amount of Units held in certificated form (CUSIP No.
[            ]) by [insert name of transferor] (the “Transferor”). The Transferor has requested an exchange or transfer of such Units. 
  
 In connection with such request and in respect of such Units, the Transferor
does hereby certify that (i) such Units are owned by the Transferor and are being exchanged without transfer or (ii) such transfer has been effected pursuant to and in accordance with (a) a registration statement filed with, and declared effective
by, the Securities and Exchange Commission (the “Registration Statement”), (b) an applicable exemption from the registration requirements under Securities Act of 1933, as amended (the “Act”), or (c) Rule 144 under the Act, and
accordingly the Transferor does hereby further certify that 
  
 [select as appropriate — 
  
 [the offer and
sale of such Units was made pursuant to the Registration Statement;] 
  

 [the offer and sale of such Units was made pursuant to an applicable exemption from the registration
requirements under the Act;] 
  
 [the Units have been transferred
in a transaction pursuant to Rule 144]; and 
  
 the transaction
is not part of a plan or scheme to evade the registration requirements of the Act. 
  
 We understand that this certificate is required in connection with certain securities laws of the United States. In connection therewith, if administrative or legal proceedings are commenced or threatened in
connection with which this certificate is or would be relevant, we irrevocably authorize you to produce this certificate to any interested party in such proceeding. This certificate and the statements contained herein are made for your benefit and
the benefit of the Company and the Agent. 
  

			
	Dated:                     
	
	[Insert Name of Transferor]
		
	By:	 	 
	 	 	

	 Name:
	 	 
	 Title:Pedge Agreement

 EXHIBIT 4.6 
  

  
 UNUMPROVIDENT
CORPORATION, 
  
 BNY MIDWEST TRUST COMPANY, 

 
 as Collateral Agent, Custodial Agent 
  
 and Securities Intermediary 
  
 AND 
  
 JPMORGAN CHASE BANK, 
  
 as Purchase Contract Agent 
  
 PLEDGE AGREEMENT 
  
 Dated as of May 11, 2004 
  

 TABLE OF CONTENTS 
  

					
	 ARTICLE I
	  	 
	 DEFINITIONS
	  	 
			
	 SECTION 1.1
	  	 Definitions
	  	2
		
	 ARTICLE II
	  	 
	 PLEDGE; CONTROL AND PERFECTION
	  	 
			
	 SECTION 2.1
	  	 The Pledge
	  	4
	 SECTION 2.2
	  	 Control and Perfection
	  	6
		
	 ARTICLE III
	  	 
	 PAYMENTS ON COLLATERAL
	  	 
			
	 SECTION 3.1
	  	 Payments
	  	8
	 SECTION 3.2
	  	 Application of Payments
	  	9
		
	 ARTICLE IV
	  	 
	 SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF NOTES
	  	 
			
	 SECTION 4.1
	  	 Collateral Substitution and the Creation of Stripped Units
	  	10
	 SECTION 4.2
	  	 Collateral Substitution and the Re-Creation of Normal Units
	  	10
	 SECTION 4.3
	  	 Termination Event
	  	11
	 SECTION 4.4
	  	 Early Settlement; Merger Early Settlement; Cash Settlement
	  	12
	 SECTION 4.5
	  	 Remarketing; Application of Proceeds; Settlement
	  	13
		
	 ARTICLE V
	  	 
	 VOTING RIGHTS — NOTES
	  	 
			
	 SECTION 5.1
	  	 Exercise by Purchase Contract Agent
	  	15
		
	 ARTICLE VI
	  	 
	 RIGHTS AND REMEDIES; SPECIAL EVENT REDEMPTION
	  	 
			
	 SECTION 6.1
	  	 Rights and Remedies of the Collateral Agent
	  	16
	 SECTION 6.2
	  	 Substitutions
	  	17
	 SECTION 6.3
	  	 Special Event Redemption
	  	17
		
	 ARTICLE VII
	  	 
	 REPRESENTATIONS AND WARRANTIES; COVENANTS
	  	 
			
	 SECTION 7.1
	  	 Representations and Warranties of the Holders
	  	18
	 SECTION 7.2
	  	 Representations and Warranties of the Collateral Agent, Custodial Agent and Securities Intermediary
	  	18

  

					
	 SECTION 7.3
	  	 Covenants
	  	19
		
	 ARTICLE VIII
	  	 
	 THE COLLATERAL AGENT
	  	 
			
	 SECTION 8.1
	  	 Appointment, Powers and Immunities
	  	20
	 SECTION 8.2
	  	 Instructions of the Company
	  	21
	 SECTION 8.3
	  	 Reliance
	  	21
	 SECTION 8.4
	  	 Rights in Other Capacities
	  	22
	 SECTION 8.5
	  	 Non-Reliance on Collateral Agent
	  	22
	 SECTION 8.6
	  	 Compensation and Indemnity
	  	22
	 SECTION 8.7
	  	 Failure to Act
	  	23
	 SECTION 8.8
	  	 Resignation
	  	24
	 SECTION 8.9
	  	 Right to Appoint Agent or Advisor
	  	25
	 SECTION 8.10
	  	 Survival
	  	25
	 SECTION 8.11
	  	 Exculpation
	  	25
		
	 ARTICLE IX
	  	 
	 AMENDMENT
	  	 
			
	 SECTION 9.1
	  	 Amendment Without Consent of Holders
	  	26
	 SECTION 9.2
	  	 Amendment with Consent of Holders
	  	26
	 SECTION 9.3
	  	 Execution of Amendments
	  	27
	 SECTION 9.4
	  	 Effect of Amendments
	  	27
	 SECTION 9.5
	  	 Reference to Amendments
	  	28
		
	 ARTICLE X
	  	 
	 MISCELLANEOUS
	  	 
			
	 SECTION 10.1
	  	 No Waiver
	  	28
	 SECTION 10.2
	  	 Governing Law
	  	28
	 SECTION 10.3
	  	 Notices
	  	29
	 SECTION 10.4
	  	 Successors and Assigns
	  	29
	 SECTION 10.5
	  	 Counterparts
	  	29
	 SECTION 10.6
	  	 Severability
	  	29
	 SECTION 10.7
	  	 Expenses, Etc.
	  	29
	 SECTION 10.8
	  	 Security Interest Absolute
	  	30
		
	 EXHIBIT A     Instruction from Purchase Contract Agent to Collateral Agent
	  	 
	 EXHIBIT B     Instruction to Purchase Contract Agent
	  	 
	 EXHIBIT C     Instruction to Custodial Agent Regarding Remarketing
	  	 
	 EXHIBIT D     Instruction to Custodial Agent Regarding Withdrawal from Remarketing
	  	 

  

 PLEDGE AGREEMENT 
  
 PLEDGE AGREEMENT, dated as of May 11, 2004 (this “Agreement”), among UnumProvident Corporation, a Delaware
corporation (the “Company”), 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 “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 JPMorgan Chase Bank, a New York banking corporation, not individually but solely as purchase contract agent and as attorney-in-fact of the Holders from time
to time of the Units (in such capacity, together with its successors in such capacity, the “Purchase Contract Agent”) under the Purchase Contract Agreement (as defined herein). 
  
 RECITALS 
  
 WHEREAS, 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 Units having a Stated Amount of $25 per Unit, all of which will initially be Normal Units. 
  
 WHEREAS, each Normal Unit will be comprised of (a) a Purchase Contract and
(b) either beneficial ownership of (i) a 1/40, or 2.5%, beneficial ownership interest in a Note having a $1,000 principal amount or (ii) following the remarketing of the Notes in accordance with the Purchase Contract Agreement and the Remarketing
Agreement or following a Special Event Redemption in accordance with the Purchase Contract Agreement and the terms of the Notes, beneficial ownership of the appropriate Treasury Consideration. 
  
 WHEREAS, in accordance with the terms of the Purchase Contract Agreement, a
Holder of Normal Units may separate the Notes or the appropriate Treasury Consideration, as applicable, from the related Purchase Contracts by substituting for such Notes or the appropriate Treasury Consideration, as the case may be, Treasury
Securities that will pay in the aggregate an amount equal to the aggregate Stated Amount of such Normal Units. Upon such separation, the Normal Units will become Stripped Units. Each Stripped Unit will be comprised of (a) a Purchase Contract and (b)
a 1/40 undivided beneficial interest in a Treasury Security. 
  
 WHEREAS, pursuant to the terms of the Purchase Contract Agreement and the Purchase Contracts, the Holders, from time to time, of the Units 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 such Holders and to grant the pledge provided hereby of the Notes, any Treasury Consideration and any Treasury 

  

 
Securities delivered in exchange therefor to secure each Holder’s obligations under the related Purchase Contract, as provided herein and subject to the
terms hereof. 
  
 NOW, THEREFORE, in consideration of the premises
and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, 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 Units, agree as follows: 
  
 ARTICLE I 
  
 DEFINITIONS

  
 SECTION 1.1 Definitions 
  
 For all purposes of this Agreement, except as otherwise expressly provided
or unless the context otherwise requires: 
  
 (a)
capitalized terms used but not defined herein are used as defined in the Purchase Contract Agreement; 
  
 (b) the defined terms in this Agreement have the meanings assigned to them in this Article and include the plural as well as the singular;
and 
  
 (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. 
  
 “Agreement” means this agreement 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. 
  
 “Code” has the meaning specified in Section 6.1 hereof. 
  

“Collateral” has the meaning specified in Section 2.1 (a) hereof. 
  
 “Collateral Account” means the securities account (number
[            ]) maintained at BNY Midwest Trust Company, 2 North LaSalle Street, Suite 1020, Chicago, Illinois 60602, in the name “JPMorgan Chase Bank, as Purchase Contract Agent on
behalf of the holders of certain securities of UnumProvident Corporation, Collateral Account subject to the security interest of BNY Midwest Trust Company, as Collateral Agent, for the benefit of UnumProvident Corporation, as pledgee” and any
successor account. 
  
 “Collateral Agent” has the
meaning specified in the first paragraph of this Agreement. 
  

 -2- 

 “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. 
  
 “Intermediary” means any entity that in the ordinary course of its
business maintains securities accounts for others and is acting in that capacity. 
  
 “Pledge” has the meaning specified in Section 2.1 hereof. 
  
 “Pledged Notes” has the meaning specified in Section 2.1 hereof. 
  
 “Pledged Treasury Consideration” has the meaning specified in Section 2.1 hereof. 
  
 “Pledged Treasury Securities” has the meaning specified in Section
2.1 hereof. 
  
 “Proceeds” means all interest,
dividends, cash, instruments, securities, financial assets (as defined in Section 8-102(a)(9) of the Code) and other property from time to time received, receivable or otherwise distributed upon the sale, exchange, collection or disposition of the
Collateral or any proceeds thereof. 
  
 “Purchase Contract
Agent” has the meaning specified in the first paragraph of this Agreement. 
  
 “Purchase Contract Agreement” has the meaning specified in the Recitals. 
  
 “Restricted Securities” means all or any portion of the Units and the securities constituting the Units (the “Underlying Securities”),
except any such Unit or Underlying Security that (i) has been effectively registered under the Securities Act and sold in a manner contemplated by the Shelf Registration Statement, (ii) has been transferred in compliance with Rule 144 under the
Securities Act (or any successor provision thereto) or is transferable pursuant to Rule 144(k) as if it was held by a non-affiliate of the Company (or any successor provision thereto), or (iii) such Unit or Underlying Security ceases to be
outstanding (whether as a result of redemption, repurchase, cancellation or conversion). 
  
 “Securities Act” means the Securities Act of 1933, as amended. 
  
 “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. 
  

 -3- 

 “Separate Notes” means any Notes that are not Pledged Notes. 
  
 “Shelf Registration Statement” means a registration statement for
the registration and resale under Rule 415 under the Securities Act of the Company’s Units and Underlying Securities, in accordance with the Registration Rights Agreement, dated as of May 11, 2004, between the Company and the Subscribers named
therein. 
  
 “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)	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; 

 

	 	(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
(a) credit a “security entitlement” (as defined in Section 8-102(a)(17) of the Code) 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 (b) 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. In addition, any Transfer of Treasury Securities and Treasury Consideration hereunder shall be made in accordance with the TRADES Regulations and other applicable law. 

  
 ARTICLE II 
  
 PLEDGE; CONTROL AND PERFECTION 
  
 SECTION 2.1 The Pledge 
  
 (a) 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 

  

 -4- 

 
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 the Purchase Contract Agent and such Holders in: 
  

	 	(i)	(A) the Notes, Treasury Consideration or Treasury Securities constituting a part of the Units, (B) any Treasury Securities delivered in exchange for any Notes or Treasury
Consideration, as applicable, in accordance with Section 4.1 hereof, and (C) any Notes or Treasury Consideration, as applicable, delivered in exchange for any Treasury Securities in accordance with Section 4.2 hereof, in each case that have been
Transferred to or otherwise received by the Collateral Agent and not released by the Collateral Agent to such Holders under the provisions of this Agreement; 

  

	 	(ii)	the Collateral Account and all securities, financial assets, security entitlements, cash and other property credited thereto and all Security Entitlements related thereto;

  

	 	(iii)	all Proceeds of the foregoing; and 

  

	 	(iv)	all powers and rights now owned or hereafter acquired under or with respect to any of the foregoing (all of the foregoing, collectively, the “Collateral”).

  
 (b) Prior to or concurrently with the execution
and delivery of this Agreement, the Purchase Contract Agent, on behalf of the initial Holders of the Units, shall cause the Notes comprising a part of the Normal Units to be Transferred to the Collateral Agent for the benefit of the Company.

  
 (c) The pledge provided in this Section 2.1 is herein referred
to as the “Pledge” and the Notes (including any Notes that are delivered pursuant to Section 6.2 hereof), Treasury Consideration and Treasury Securities subject to the Pledge, excluding any Notes, Treasury Consideration or Treasury
Securities released from the Pledge as provided in Sections 4.1 and 4.2 hereof, respectively, are hereinafter referred to as “Pledged Notes,” “Pledged Treasury Consideration” and “Pledged Treasury Securities,”
respectively. 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. 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. Whenever directed by the Collateral Agent acting on
behalf of the Company, the Securities Intermediary shall have the right to reregister the Notes or any other securities held in physical form in its name. 
  
 (d) Except as may be required in order to release Notes or Treasury Consideration, as applicable, in connection with a Special Event Redemption or with a

  

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Holder’s election to convert its investment from a Normal Unit to a Stripped Unit, or except as otherwise required to release Notes as specified herein,
neither the Collateral Agent, the Custodial Agent nor the Securities Intermediary shall relinquish physical possession of any certificate evidencing Notes, Treasury Securities or Treasury Consideration, as applicable, prior to the termination of
this Agreement. If it becomes necessary for the Securities Intermediary to relinquish physical possession of a certificate in order to release a portion of the Notes evidenced thereby from the Pledge, the Securities Intermediary shall use its best
efforts to obtain physical possession of a replacement certificate evidencing any Notes remaining subject to the Pledge hereunder registered to it or endorsed in blank within fifteen days of the date it relinquished possession. The Securities
Intermediary shall promptly notify the Company and the Collateral Agent of its inability 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 may deliver pursuant to the terms hereof or upon the written direction of the Company
with respect to the Collateral Account, the Collateral credited thereto and any Security Entitlements with respect to any thereof. In the event the Securities Intermediary receives from the Holders or the Purchase Contract Agent entitlement orders
which conflict with entitlement orders received from the Collateral Agent, the Securities Intermediary shall follow the entitlement orders received from the Collateral Agent. Such instructions and entitlement orders may, without limitation, direct
the Securities Intermediary to transfer, redeem, assign, or otherwise deliver the Notes, the Treasury Consideration and the Treasury Securities, and any Security Entitlements with respect thereto, or sell, liquidate or dispose of such assets through
a broker designated by the Company, and to pay and deliver any income, proceeds or other funds derived therefrom to the Company. The Holders from time to time acting through the Purchase Contract Agent hereby further authorize and direct the
Collateral Agent, as agent of the Company, to, pursuant to the terms hereof or upon written direction of the Company, 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, 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 only in accordance with the terms hereof or as otherwise directed in writing by the Company. Without limiting the generality of the foregoing, the Collateral Agent shall issue entitlement orders to the Securities Intermediary when and
as required by the terms hereof or as otherwise directed in writing by the Company. 
  

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 (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, or its nominee,
indorsed to the Securities Intermediary, or its nominee, 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 Collateral 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 indorsed to the Securities Intermediary or in blank; 

  

	 	(ii)	all property delivered to the Securities Intermediary pursuant to this Agreement (including, without limitation, any Notes, Treasury Consideration or 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 entitled to exercise the rights of any financial asset credited 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 or the
Purchase Contract Agent 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
thereof) and any other agreement now existing or hereafter entered into, the terms of this Agreement shall prevail. 
  

 -7- 

 (e) The Purchase Contract Agent hereby irrevocably constitutes and appoints the Collateral Agent and the
Company, 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. Notwithstanding the foregoing, in no event shall the Collateral Agent, the Custodial Agent or the Securities Intermediary be responsible for the preparation or filing of any financing or continuation statements in the
appropriate jurisdictions or responsible for maintenance or perfection of any security interest hereunder. 
  
 ARTICLE III 
  
 PAYMENTS ON COLLATERAL 
  
 SECTION 3.1 Payments

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

	 	(i)	in the case of (A) quarterly cash distributions on Normal Units which include Pledged Notes or Pledged Treasury Consideration, as the case may be, and (B) any payments with respect
to any Notes or Treasury Consideration, 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 the Normal Units, to the account
designated by the Purchase Contract Agent for such purpose no later than 11:00 a.m., New York City time, on the Business Day such payment is received by the Collateral Agent (provided that in the event such payment or payment instructions are
received by the Collateral Agent on a day that is not a Business Day or after 9:00 a.m., New York City time, on a Business Day, then such payment shall be made no later than 9:30 a.m., New York City time, on the next succeeding Business Day);

  

	 	(ii)	 in the case of any 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
Stripped Units, to the accounts and in such amounts 

  

 -8- 

	 	 
designated by the Purchase Contract Agent 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 or payment instructions are received by the Collateral Agent on a day that is not a Business Day or after 10:00 a.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); any payment to be made directly to the Holders of such Stripped Units shall be subject to applicable federal withholding law, including the
requirement that a Holder shall have provided to the Collateral Agent its certified taxpayer identification number by furnishing appropriate Forms W-9 (or such other forms as shall be applicable); and 

  

	 	(iii)	in the case of payments in respect of any Pledged Notes, Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, to be paid upon settlement of such
Holder’s obligations to purchase shares of Common Stock under the Purchase Contract, to the Company on the Stock Purchase Date in accordance with the procedure set forth in Section 4.5(a) or 4.5(b) hereof, in full satisfaction of the respective
obligations of the Holders under the related Purchase Contracts. 

  
 SECTION 3.2 Application of Payments 
  
 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 shall receive any payments of principal on account of any Notes or Treasury Consideration, as applicable, that, at the time of such payment, are Pledged Notes or Pledged Treasury Consideration, as the case may be (other than payments to which
it is entitled pursuant to the terms of the Purchase Contract Agreement), or a Holder of a Stripped Unit shall receive any payments of principal on account of any Treasury Securities that, at the time of such payment, are Pledged Treasury Securities
(other than payments to which it is entitled pursuant to the terms of the Purchase Contract Agreement), the Purchase Contract Agent or such Holder shall hold the same as trustee of an express trust for the benefit of the Company (and promptly
deliver the same over to the Company) for application to the obligations of the Holders under the related Purchase Contracts, and the Holders shall acquire no right, title or interest in any such payments of principal so received. 
  

 -9- 

 ARTICLE IV 
  
 SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF NOTES 
  
 SECTION 4.1 Collateral Substitution and the Creation of Stripped Units 
  
 At any time on or prior to the seventh Business Day immediately preceding the Stock Purchase Date, a Holder of Normal Units
shall have the right to substitute Treasury Securities for the Pledged Notes or Pledged Treasury Consideration, as the case may be, securing such Holder’s obligations under the Purchase Contracts comprising a part of such Normal Units, in
integral multiples of 40 Normal Units, or after a successful remarketing of the Notes pursuant to the Purchase Contract Agreement or a Special Event Redemption, in integral multiples of Normal Units so that Treasury Securities to be deposited and
the applicable Treasury Consideration, as the case may be, to be released are in integral multiples of $1,000, by (a) Transferring to the Collateral Agent Treasury Securities having an aggregate principal amount equal to the aggregate Stated Amount
of such Normal Units and (b) delivering such Normal Units to the Purchase Contract Agent, accompanied by a notice, substantially in the form of Exhibit B hereto, to the Purchase Contract Agent stating that such Holder has Transferred Treasury
Securities to the Collateral Agent pursuant to clause (a) above (stating the principal amount, the maturities and the CUSIP numbers of the Treasury Securities Transferred by such Holder) and requesting that the Purchase Contract Agent instruct the
Collateral Agent to release from the Pledge the Pledged Notes or Pledged Treasury Consideration related to such Normal Units, whereupon the Purchase Contract Agent shall promptly give such instruction to the Collateral Agent in the form provided in
Exhibit A; provided that such Holder may not substitute such Treasury Securities for such Pledged Notes or Pledged Treasury Consideration pursuant to this Section 4.1 during the period beginning on the fourth Business Day prior to the first
day of the first or second Remarketing Period and ending on the third Business Day after the end of such Remarketing Period. Upon receipt of Treasury Securities from a Holder of Normal Units and the related instruction from the Purchase Contract
Agent, the Collateral Agent shall release the Pledged Notes or Pledged Treasury Consideration and shall promptly Transfer such Pledged Notes or Pledged Treasury Consideration free and clear of any lien, pledge or security interest created hereby, to
the Purchase Contract Agent. All items Transferred and/or substituted by any Holder pursuant to this Section 4.1, Section 4.2 or any other Section of this Agreement shall be Transferred and/or substituted free and clear of all liens, claims and
encumbrances. 
  
 SECTION 4.2 Collateral Substitution and the
Re-Creation of Normal Units 
  
 At any time on or prior to the
seventh Business Day immediately preceding the Stock Purchase Date, a Holder of Stripped Units shall have the right to reestablish Normal Units (a) consisting of the Purchase Contracts and Notes in integral multiples of 40 Normal Units, or (b) after
a successful remarketing of the Notes pursuant to the Purchase Contract Agreement or a Special Event Redemption, consisting of the Purchase 

  

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Contracts and the appropriate Treasury Consideration (identified and calculated by reference to the Treasury Consideration then comprising Normal Units) or
the appropriate portion of the Treasury Portfolio in integral multiples of Stripped Units so that the Treasury Consideration to be deposited and the Treasury Securities to be released are in integral multiples of $1,000, by (x) Transferring to the
Collateral Agent Notes or the appropriate Treasury Consideration, as the case may be, then comprising such number of Normal Units as is equal to such Stripped Units and (y) delivering such Stripped Units to the Purchase Contract Agent, accompanied
by a notice, substantially in the form of Exhibit B hereto, to the Purchase Contract Agent stating that such Holder has transferred Notes or Treasury Consideration to the Collateral Agent pursuant to clause (a) above and requesting that the Purchase
Contract Agent instruct the Collateral Agent to release from the Pledge the Pledged Treasury Securities related to such Stripped Units, whereupon the Purchase Contract Agent shall give such instruction to the Collateral Agent in the form provided in
Exhibit A; provided that such Holder may not substitute such Notes or Treasury Consideration for such Pledged Treasury Securities pursuant to this Section 4.2 during the period beginning on the fourth Business Day prior to the first day of
the first or second Remarketing Period and ending on the third Business Day after the end of such Remarketing Period. Upon receipt of the Notes or the appropriate Treasury Consideration, as the case may be, from such Holder and the instruction from
the Purchase Contract Agent, the Collateral Agent shall release the Pledged Treasury Securities and shall promptly Transfer such Treasury Securities, free and clear of any lien, pledge or security interest created hereby, to the Purchase Contract
Agent. 
  
 SECTION 4.3 Termination Event 
  
 (a) Upon receipt by the Collateral Agent of written notice from the Company
or the Purchase Contract Agent that there has occurred a Termination Event and identifying the nature of the Termination Event, the Collateral Agent shall release all Collateral from the Pledge and shall promptly Transfer any Pledged Notes or
Pledged Treasury Consideration, as the case may be, and Pledged Treasury Securities to the Purchase Contract Agent for the benefit of the Holders of the Normal Units and the Stripped Units, respectively, free and clear of any lien, pledge or
security interest or other interest created in favor of the Collateral Agent hereby. 
  
 (b) If such Termination Event shall result from the Company’s becoming a debtor under the Bankruptcy Code, and if the Collateral Agent shall advise the Purchase Contract Agent in writing that the Collateral Agent
shall for any reason be prohibited from promptly effectuating the release and Transfer of all Pledged Notes, Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, as provided by this Section 4.3, the Purchase Contract
Agent shall: 
  

	 	(i)	 use its 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’s being the debtor in such a bankruptcy case, the Collateral Agent will not be prohibited from releasing or Transferring the 

  

 -11- 

	 	 
Collateral as provided in this Section 4.3, and shall deliver such opinion to the Collateral Agent within ten days after the receipt of such written notice
from the Collateral Agent, and if (y) 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 Notes, Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, as provided in this Section 4.3, then the Purchase Contract Agent shall within fifteen days after
the receipt of such written notice from the Collateral Agent 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 Notes, Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, as provided by this Section 4.3 or 

  

	 	(ii)	commence an action or proceeding like that described in subsection (i) hereof within ten days after the receipt of such written notice from the Collateral Agent.

  
 SECTION 4.4 Early Settlement; Merger Early
Settlement; Cash Settlement 
  
 Upon written notice to the
Collateral Agent by the Purchase Contract Agent that one or more Holders of Units have elected to effect Early Settlement, Merger Early Settlement or Cash Settlement of their respective obligations under the Purchase Contracts forming a part of such
Units in accordance with the terms of the Purchase Contracts and the Purchase Contract Agreement (setting forth the number of such Purchase Contracts as to which such Holders have elected to effect Early Settlement, Merger Early Settlement or Cash
Settlement), and that the Purchase Contract Agent has received from such Holders, and paid to the Company as confirmed by written notice to the Collateral Agent by the Company, the related Early Settlement Amounts, Merger Early Settlement Amounts or
Cash Settlement Amounts, as the case may be, pursuant to the terms of the Purchase Contracts and the Purchase Contract Agreement and that all conditions to such Early Settlement, Merger Early Settlement or Cash Settlement, as the case may be, have
been satisfied, then the Collateral Agent shall release from the Pledge (a) Pledged Notes or Pledged Treasury Consideration, as the case may be, in the case of a Holder of Normal Units or (b) Pledged Treasury Securities, in the case of a Holder of
Stripped Units, identified by the Purchase Contract Agent as relating to such Purchase Contracts as to which such Holders have elected to effect Early Settlement, Merger Early Settlement or Cash Settlement, and shall Transfer all such Pledged Notes,
Pledged Treasury Consideration or Pledged Treasury Securities, as the case may be, free and clear of any lien, pledge or security interest created hereby, to the Purchase Contract Agent for the benefit of the Holders. 
  

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 SECTION 4.5 Remarketing; Application of Proceeds; Settlement 
  
 (a) Pursuant to the Purchase Contract Agreement, the Purchase Contract Agent
shall notify, by 10:00 a.m., New York City time, on the third Business Day preceding the first day of any Remarketing Period, the Remarketing Agent and the Collateral Agent of the aggregate principal amount of Notes comprising part of Normal Units
to be remarketed. The Collateral Agent shall, by 10:00 a.m., New York City time, on the Business Day immediately preceding the first day of any Remarketing Period, without any instruction from Holders of Normal Units, deliver (i) the Pledged Notes
to be remarketed to the Remarketing Agent for remarketing and (ii) the remaining Pledged Notes to the Purchase Contract Agent for distribution to the Holders that have elected not to participate in the remarketing in accordance with the Purchase
Contract Agreement. The Remarketing Agent will agree pursuant to the Remarketing Agreement to deliver the Agent-purchased Treasury Consideration purchased from the proceeds of a successful remarketing to the Purchase Contract Agent, which shall
thereupon deliver such Agent-purchased Treasury Consideration to the Collateral Agent. Upon receipt of the Agent-purchased Treasury Consideration from the Purchase Contract Agent following a successful remarketing, the Collateral Agent, for the
benefit of the Company, shall thereupon hold such Agent-purchased Treasury Consideration to secure such Holders’ obligations under the Purchase Contracts. On the Stock Purchase Date, the Collateral Agent shall apply that portion of the payments
received in respect of the Pledged Treasury Consideration equal to the aggregate Stated Amount of the related Normal Units to satisfy in full the obligations of such Holders of Normal Units to pay the Purchase Price 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 each Holder of a Normal Unit a cash payment in an amount equal to 1/40, or 2.5%, of a quarterly
interest payment on the $1,000 principal amount of a Senior Note at the initial annual rate of 5.085%. 
  
 (b) Promptly following a Failed Remarketing, the Notes delivered to the Remarketing Agent and the Purchase Contract Agent pursuant to Section 4.5(a) shall
be returned to the Collateral Agent, together with written notice from the Remarketing Agent of the Failed Remarketing. The Collateral Agent, for the benefit of the Company, shall thereupon hold such Notes to secure the obligations of Holders of
Normal Units under the Purchase Contracts. The Remarketing Agent shall agree to make one or more attempts to remarket the Notes in accordance with the procedures set forth in the Purchase Contract Agreement and the Remarketing Agreement between the
Remarketing Date and the Stock Purchase Date, provided that the requirements of Section 5.4(b)(ii) of the Purchase Contract Agreement have been met. If by 4:00 p.m., New York City time, on the third Business Day immediately preceding the
Stock Purchase Date the Remarketing Agent has failed to remarket the Notes at a price equal to at least 100.25% of the Remarketing Value (or, if the Remarketing Agent is unable to remarket the Notes at such a price, at a price below 100.25% in the
discretion of the Remarketing Agent, but in no event less than 100.00% of the Remarketing Value), the “Last Failed Remarketing” shall be deemed to have occurred. In this case, the Remarketing Agent will agree to 

  

 -13- 

 
advise the Collateral Agent in writing that it cannot remarket the related Pledged Notes of such Holders of Normal Units and the Remarketing Agent will agree
pursuant to the Remarketing Agreement to promptly return to the Collateral Agent the Notes delivered to it pursuant to Section 4.5(a). The Collateral Agent, for the benefit of the Company will, at the written direction of the Company, deliver or
dispose of the Pledged Notes in accordance with the Company’s written instructions to satisfy in full, from any such disposition or retention, such Holders’ obligations to pay the Purchase Price for the Common Stock; provided that
if upon a Failed Remarketing or the Last Failed Remarketing, as the case may be, the Collateral Agent delivers or disposes of the Pledged Notes in accordance with the written instructions of the Company, any accrued and unpaid interest on such Notes
will become payable by the Company to the Purchase Contract Agent for payment to the Holder of the Normal Units to which such Notes relate in accordance with the Purchase Contract Agreement. 
  
 (c) In the event a Holder of Stripped Units has not made an Early Settlement
or Merger Early Settlement of the Purchase Contracts underlying its Stripped Units, 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 payments received in respect of
the related Pledged Treasury Securities. Without receiving any instruction from any such Holder of Stripped Units, the Collateral Agent shall apply such payments to the settlement of such Purchase Contracts on the Stock Purchase Date pursuant to
written instructions from the Purchase Contract Agent. In the event the payments received in respect of the related Pledged Treasury Securities are in excess of the aggregate Purchase Price of the Purchase Contracts being settled thereby, the
Collateral Agent shall distribute such excess, when received, to the Purchase Contract Agent for payment to such Holders of Stripped Units. 
  
 (d) Pursuant to the Remarketing Agreement and Purchase Contract Agreement, on or prior to the fourth Business Day preceding the first day of any
Remarketing Period, but no earlier than the Payment Date immediately preceding the first day of such Remarketing Period, holders of Separate Notes may elect to have their Separate Notes remarketed by delivering their Separate Notes, together with a
notice of such election, substantially in the form of Exhibit C hereto, to the Custodial Agent. On the third Business Day prior to the first day of any Remarketing Period, by 10:00 a.m., New York City time, the Custodial Agent shall notify the
Remarketing Agent of the principal amount of such Separate Notes to be remarketed. The Custodial Agent will hold such Separate Notes in an account separate from the Collateral Account. A holder of Separate Notes electing to have its Separate Notes
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 fourth Business Day immediately preceding the first day of any Remarketing
Period, upon which notice the Custodial Agent will return such Separate Notes to such holder. On the Business Day immediately preceding the first day of any Remarketing Period, the Custodial Agent will deliver to the Remarketing Agent for
remarketing all Separate Notes delivered to the Custodial Agent pursuant to this Section 4.5(d) and not withdrawn pursuant to the terms hereof prior to 

  

 -14- 

 
such date. The portion of the proceeds from such remarketing equal to the amount calculated in respect of such Separate Notes as set forth in Section 5.4(b)
of the Purchase Contract Agreement will automatically be remitted by the Remarketing Agent to the Custodial Agent for the benefit of the holders of such Separate Notes. In addition, after deducting as the remarketing fee an amount not exceeding 25
basis points (0.25%) of the Remarketing Value, the Remarketing Agent will remit to the Custodial Agent the remaining portion of the proceeds, if any, for payment to such holders. If, despite using commercially reasonable best efforts, the
Remarketing Agent advises the Custodial Agent in writing that there has been a Failed Remarketing, the Remarketing Agent will promptly return such Notes to the Custodial Agent for redelivery to the holders of such Separate Notes. For purposes of
this Section 4.5(d), a “holder” of Separate Notes shall mean the Person in whose name such Separate Notes is registered on the books of the registrar for the Notes. 
  
 (e) The Collateral Agent, Custodial Agent and Securities Intermediary each covenant and agree that any Collateral, if and
for so long as it is a Restricted Security, may not be sold or otherwise transferred in the absence of an effective registration statement under the Securities Act or an applicable exemption from the registration requirements under the Securities
Act. Each of the Collateral Agent, Custodial Agent and Securities Intermediary further covenant and agree that any such Pledged Note that is a Restricted Security may not be sold or otherwise transferred pursuant to Rule 144A under the Securities
Act. 
  
 ARTICLE V 
  
 VOTING RIGHTS — NOTES 
  
 SECTION 5.1 Exercise by Purchase Contract Agent 
  
 The Purchase Contract Agent may exercise, or refrain from exercising, any and
all voting and other consensual rights pertaining to the Pledged Notes 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 Notes; and provided, further, that the Purchase Contract Agent shall give the Company and the Collateral Agent at least five Business 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 Notes, including notice of any meeting at which holders of Notes are entitled to vote or solicitation of consents,
waivers or proxies of holders of Notes, 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 

  

 -15- 

 
Contract Agent, execute and deliver to the Purchase Contract Agent such proxies and other instruments in respect of such Pledged Notes (in form and substance
satisfactory to the Collateral Agent) as are prepared by the Purchase Contract Agent with respect to the Pledged Notes. 
  
 ARTICLE VI 
  
 RIGHTS AND REMEDIES; SPECIAL EVENT REDEMPTION 
  
 SECTION 6.1 Rights and Remedies of the Collateral Agent 
  
 (a) In addition to the rights and remedies available at law or in equity, after an event of default under the Purchase Contracts, 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 Notes or other Collateral in full satisfaction of the Holders’ obligations under the
Purchase Contracts or (ii) sale of the Pledged Notes or other Collateral in one or more public or private sales or otherwise at the written direction of the Company; provided, however, that in the event the Collateral is comprised of
securities that are restricted securities under Rule 144 under the Securities Act, any such transaction shall be either pursuant to an effective registration statement under the Securities Act or an exemption from such registration. 
  
 (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 any Pledged Treasury Consideration or Pledged Treasury Securities as provided in Article III hereof in satisfaction of the obligations
of the Holder of the Units of which such Pledged Treasury Consideration or Pledged Treasury Securities, as applicable, is a part under the related Purchase Contracts, the inability to make such payments shall constitute an event of default under the
Purchase Contracts and the Collateral Agent shall have and may exercise, with reference to such Pledged Treasury Securities or such Pledged Treasury Consideration, 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. 
  

 -16- 

 (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) the principal amount of, or interest on, the Pledged Notes, or (ii) the principal amount of the Pledged Treasury Consideration or Pledged Treasury
Securities, subject, in each case, to the provisions of Article III, and as otherwise granted herein. 
  
 (d) The Purchase Contract Agent, individually and as attorney-in-fact for each Holder of Units, agrees that, from time to time, upon the written request
of the Company or the Collateral Agent (acting upon the written request of the Company), the Purchase Contract Agent or such Holder shall execute and deliver such further documents and do such other acts and things as may be necessary, including as
the Company or the Collateral Agent (acting upon the written request of the Company) 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 Company or the Collateral Agent (acting upon the written request of the Company) hereunder, except for liability for
its own negligent act, its own negligent failure to act, its own bad faith or its own willful misconduct. 
  
 SECTION 6.2 Substitutions 
  
 Whenever a Holder has the right to substitute Treasury Securities, Notes, or Treasury Consideration, as the case may be, for Collateral held by the
Collateral Agent, such substitution shall not constitute a novation of the security interest created hereby. 
  
 SECTION 6.3 Special Event Redemption 
  
 Upon the occurrence of a Special Event Redemption prior to the Stock Purchase Date or the earlier successful remarketing of the Notes pursuant to Section
5.4 of the Purchase Contract Agreement and the receipt of the Redemption Price of the Pledged Notes by the Collateral Agent, the Collateral Agent will, at the written direction of the Company, apply the Redemption Price to purchase on behalf of the
Holders of Normal Units the Special Event Redemption Treasury Consideration. The Collateral Agent shall transfer the Special Event Redemption Treasury Consideration to the Collateral Account to secure the obligation of all Holders of Normal Units to
purchase shares of Common Stock of the Company under the Purchase Contracts constituting a part of such Normal Units, in substitution for the Pledged Notes. Thereafter, the Collateral Agent shall have such security interests, rights and obligations
with respect to the Special Event Redemption Treasury Consideration as it had in respect of the Pledged Notes as provided in Articles II, III, IV, V and VI, and any reference herein to the Notes shall be deemed to be reference to such Special Event
Redemption Treasury Consideration, and any reference herein to interest on the Notes shall be deemed to be a reference to corresponding distributions on such Special Event Redemption Treasury Consideration. 

  

 -17- 

 
Upon the occurrence of a Special Event Redemption, the Collateral Agent shall be authorized to surrender the Notes in accordance with the provisions of the
Indenture. 
  
 ARTICLE VII 
  
 REPRESENTATIONS AND WARRANTIES; COVENANTS 
  
 SECTION 7.1 Representations and Warranties of the Holders 
  
 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 Section 2.1; 
  
 (c) upon the Transfer of the Collateral to the Collateral Account, 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); 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 Section 2.1 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 Representations, Warranties and Covenants of the Collateral Agent, Custodial Agent and Securities Intermediary 
  
 The Collateral Agent, Custodial Agent and Securities Intermediary (each an “Agent”) hereby represents, warrants and covenants: 
  
 (a) The Collateral Agent, Custodial Agent and Securities Intermediary is a
trust company duly incorporated and validly existing under the laws of the State of Illinois; 
  

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 (b) The execution, delivery and performance by the Collateral Agent, the Custodial Agent and the
Securities Intermediary of this Agreement have each been duly authorized by all necessary corporate action on the part of each such Agent; this Agreement has been duly executed and delivered by the Collateral Agent, the Custodial Agent and the
Securities Intermediary and constitutes a valid and legally binding obligation of each of the Agents, enforceable against such Agents in accordance with its terms, subject, as to enforcement, to bankruptcy, insolvency, reorganization and other laws
of general applicability relating to or affecting creditors’ rights and to general equity principles; 
  
 (c) The execution, delivery and performance by the Collateral Agent, the Custodial Agent and the Securities Intermediary of this Agreement do not violate
or constitute a breach of the Articles of Incorporation or By-Laws of any of such Agents; 
  
 (d) No consent of any federal or state banking authority having regulatory authority over the Agents in their individual capacity is required for the execution and delivery of, or performance by the Agents of their
respective obligations under, this Agreement; and 
  
 (e) The
Collateral Agent, Custodial Agent and Securities Intermediary each covenant and agree that any Collateral, if and for so long as it is a Restricted Security, may not be sold or otherwise transferred in the absence of an effective registration
statement under the Securities Act or an applicable exemption from the registration requirements under the Securities Act. Each of the Collateral Agent, Custodial Agent and Securities Intermediary further covenant and agree that any Pledged Note
that is a Restricted Security may not be sold or otherwise transferred pursuant to Rule 144A under the Securities Act. 
  
 SECTION 7.3 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: 
  
 (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 

  

 -19- 

 
beneficial interest therein, subject to the pledge hereunder, transferred in connection with the Transfer of the Units. 
  
 ARTICLE VIII 
  
 THE COLLATERAL AGENT 
  
 SECTION 8.1 Appointment, Powers and Immunities 
  
 (a) 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: 
  

	 	(i)	shall have no duties or responsibilities except those expressly set forth in 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 terms hereof; 

  

	 	(ii)	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 Units or the Purchase Contract Agreement, or for the value, validity, effectiveness, genuineness, enforceability or sufficiency of this Agreement (other than as against the Collateral Agent), the Units or the Purchase Contract
Agreement or any other document referred to or provided for 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, except as expressly required hereby, for the existence, validity, perfection, priority or maintenance of any security interest created hereunder; 

  

	 	(iii)	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, subject to Section 8.6); 

  

	 	(iv)	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, bad faith or willful misconduct; and 

  

	 	(v)	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 Units or other property deposited
hereunder. 

  

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 Subject to the foregoing, during the term of this Agreement, each of the Collateral Agent, the Custodial Agent and the
Securities Intermediary, in connection with the safekeeping and preservation of the Collateral hereunder, shall use the same standard of care it applies for similar property held for its own account. 
  
 (b) 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, the Purchase Contract Agent and Securities Intermediary, each in its individual
capacity, hereby waive any right of set-off, banker’s lien, liens or perfection rights as securities intermediary or any counterclaim with respect to any of the Collateral. 
  
 (c) The Collateral Agent, Custodial Agent and Securities Intermediary shall have no liability whatsoever for the action or
inaction of any Clearing Agency or any book-entry system thereof. In no event shall any Clearing Agency or any book-entry system thereof be deemed an agent or subcustodian of the Collateral Agent, Custodial Agent and Securities Intermediary.

  
 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, the Custodial Agent or the Securities Intermediary, as the case may be, 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 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 each receive indemnity reasonably satisfactory to it as provided herein. Nothing in this Section 8.2 shall impair the right of each of the Collateral Agent, the Custodial Agent or the Securities Intermediary 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 
  
 Each of the Securities Intermediary, the Custodial Agent and the Collateral Agent shall be entitled conclusively to rely upon any certification, order,
judgment, instructions, opinion, notice or other communication (including, without limitation, any thereof by telephone or facsimile) reasonably 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 

  

 -21- 

 
required to determine the correctness of any fact stated therein), and upon advice and statements of legal counsel and other experts selected by the
Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be. As to any matters not expressly provided for by this Agreement, the Collateral Agent, the Custodial Agent and the Securities Intermediary shall in all cases be
fully protected in acting, or in refraining from acting, hereunder in accordance with instructions given by the Company in accordance with this Agreement. 
  
 SECTION 8.4 Rights in Other Capacities 
  
 The Collateral Agent, the Custodial Agent and the Securities Intermediary and their affiliates may (without having to account therefor to the Company)
accept deposits from, lend money to, make their investments in and generally engage in any kind of banking, trust or other business with the Purchase Contract Agent, any Holder of Units and any holder of Separate Notes (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, any Holder of Units or any holder of Separate Notes 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 waives any right of set-off or banker’s lien with respect to) 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 and the Collateral shall not be commingled with any other assets of any such
Person. 
  
 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 Units of this Agreement, the Purchase Contract Agreement, the Units 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 Units. The Collateral Agent, the Custodial Agent and the Securities Intermediary shall not have any duty or responsibility to
provide the Company or the Remarketing Agent with any credit or other information concerning the affairs, financial condition or business of the Purchase Contract Agent, any Holder of Units or any holder of Separate Notes (or any of their respective
subsidiaries or 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: 
  
 (a) to pay each of the Collateral Agent, the Custodial Agent and the Securities Intermediary from time to time such compensation as shall be agreed in
writing between the Company and the Collateral Agent, Custodial Agent or the Securities Intermediary, as the case may be, for all services rendered by each of them hereunder; and 
  

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 (b) to indemnify the Collateral Agent, the Custodial Agent and the Securities Intermediary for, and to
hold each of them harmless from and against, any loss, liability or reasonable out-of-pocket expense incurred without negligence, willful misconduct or bad faith on its part, arising out of or in connection with the acceptance or administration of
its powers and duties under this Agreement, including the reasonable out-of-pocket costs and expenses (including reasonable fees and expenses of counsel) of defending itself against any claim or liability in connection with the exercise or
performance of such powers and duties or collecting such amounts. 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 the indemnity
hereunder and give the Company the opportunity to control the defense of such claim with counsel reasonably satisfactory to the indemnified party, provided no conflict of interest exists, and if the Company so elects to assume such defense, the
Company shall in good faith defend the Collateral Agent, the Custodial Agent or the Securities Intermediary (in which case all attorney’s fees and expenses shall be borne by the Company). No compromise or settlement of any claims may be
effected by any party without the other parties’ consent unless (i) there is no finding or omission of any violation of law and no effect on any other claims that may be made against any of such other parties and (ii) the sole relief provided
is monetary damages that are paid in full by the party seeking the compromise or settlement. 
  
 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, Custodial
Agent and the Securities Intermediary 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, Custodial Agent nor the Securities Intermediary 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, Custodial Agent and the Securities Intermediary 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, reasonably satisfactory to the Collateral Agent, Custodial Agent or the Securities Intermediary, as the case may be,
or (ii) the Collateral Agent, the Custodial Agent or the Securities Intermediary, as the case may be, shall have received security or an indemnity reasonably satisfactory to the Collateral Agent, Custodial Agent or the Securities Intermediary, as
the case may be, sufficient to save the Collateral Agent, Custodial Agent or the Securities 

  

 -23- 

 
Intermediary, as the case may be, harmless from and against any and all loss, liability or reasonable out-of-pocket expense which the Collateral Agent,
Custodial Agent or the Securities Intermediary, as the case may be, may incur by reason of its acting without bad faith, willful misconduct or negligence. The Collateral Agent, Custodial Agent or the Securities Intermediary may in addition elect to
commence an interpleader action or seek other judicial relief or orders as the Collateral Agent, Custodial Agent or the Securities Intermediary, as the case may be, may deem necessary. Notwithstanding anything contained herein to the contrary,
neither the Collateral Agent, Custodial Agent nor the Securities Intermediary shall be required to take any action that is in its reasonable opinion contrary to law or to the terms of this Agreement, or which would in its reasonable opinion subject
it or any of its officers, employees or directors to liability. 
  
 SECTION 8.8 Resignation 
  
 Subject to the appointment
and acceptance of a successor Collateral Agent, Custodial Agent or Securities Intermediary, as provided below, (a) the Collateral Agent, Custodial Agent or the Securities Intermediary 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 Units, (b) the Collateral Agent, Custodial Agent or the Securities Intermediary may be removed at any time by the Company by notice to the Purchase Contract Agent and the
Collateral Agent, the Custodial Agent and the Securities Intermediary and (c) if the Collateral Agent, Custodial Agent or the Securities Intermediary 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, Custodial Agent or the Securities Intermediary may be removed by the Purchase Contract
Agent. The Purchase Contract Agent shall promptly notify the Company of any removal of the Collateral Agent, the Custodial Agent or the Securities Intermediary 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, Custodial Agent or Securities Intermediary, as the case may be. If no successor Collateral Agent, Custodial Agent or Securities Intermediary, as the case may be,
shall have been so appointed and shall have accepted such appointment within 30 days after any notice of such resignation or such removal, then the retiring Collateral Agent, Custodial Agent or Securities Intermediary, as the case may be, may at the
Company’s expense petition any court of competent jurisdiction for the appointment of a successor Collateral Agent, Custodial Agent or Securities Intermediary, as the case may be. Upon removal of the Collateral Agent, Custodial Agent or
Securities Intermediary, no fees paid to the retiring Collateral Agent, Custodial Agent or Securities Intermediary pursuant to Section 8.6(a) of this Agreement shall be refunded. Each successor Collateral Agent, Custodial Agent and the Securities
Intermediary shall be a bank which has an office or agency in New York, New York with a combined capital and surplus of at least $50,000,000. Upon the acceptance of any appointment as Collateral Agent, Custodial Agent or Securities Intermediary, as
the case may be, hereunder by a successor Collateral Agent, Custodial Agent or Securities Intermediary, as the case may be, such successor shall thereupon succeed to and become 

  

 -24- 

 
vested with all the rights, powers, privileges and duties of the retiring Collateral Agent, Custodial Agent or Securities Intermediary, as the case may be,
and the retiring Collateral Agent, Custodial Agent or Securities Intermediary, 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, Custodial Agent or Securities Intermediary shall, upon such succession, be discharged from its duties and obligations as Collateral Agent, Custodial Agent or Securities Intermediary hereunder. After any retiring Collateral
Agent’s, Custodial Agent’s or Securities Intermediary’s resignation hereunder as Collateral Agent, Custodial Agent or Securities Intermediary, the provisions of this Section 8.8 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, Custodial Agent or Securities Intermediary. 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 hereunder. 
  
 Any corporation into which the Collateral Agent, the Custodial Agent or the Securities Intermediary, in its individual capacity, may be merged or
converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Collateral Agent in its individual capacity shall be a party, or any corporation to which substantially all the
corporate trust business of the Collateral Agent in its individual capacity may be transferred, shall be the Collateral Agent, the Custodial Agent, or the Securities Intermediary, as the case may be, respectively, under this Agreement without
further act. 
  
 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
(other than legal counsel) pursuant to this Section 8.9 shall be subject to prior consent of the Company. 
  
 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, the Custodial
Agent or the Securities Intermediary. 
  
 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 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 lost profits or loss of business, relating to, arising from or in connection with this Agreement, whether or not the likelihood of such loss or damage was known to the 

  

 -25- 

 
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
negligence, bad faith or willful misconduct on the part of the Collateral Agent, the Custodial Agent or the Securities Intermediary. 
  
 ARTICLE IX 
  
 AMENDMENT 
  
 SECTION 9.1 Amendment Without Consent of Holders 
  
 Without the consent of any Holders or the holders of any Separate Notes, 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: 
  

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

  

	 	(ii)	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 

  

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

  

	 	(iv)	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, when duly authorized, 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 

  

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the Units; provided that no such supplemental agreement shall, without the consent of the Holder of each Outstanding Unit adversely affected thereby,

  

	 	(i)	change the amount or type of Collateral underlying a Unit (except for the rights of holders of Normal Units to substitute the Treasury Securities for the Pledged Notes or the
Pledged Treasury Consideration, as the case may be, or the rights of Holders of Stripped Units to substitute Notes or the appropriate Treasury Consideration, as applicable, for the Pledged Treasury Securities), impair the right of the Holder of any
Unit to receive distributions on the underlying Collateral or otherwise adversely affect the Holder’s rights in or to such Collateral; or 

  

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

  

	 	(iii)	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 Section 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 Article IX, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Purchase Contract
Agent shall be entitled to receive and (subject to Section 8.1 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 and, in the case of an
amendment pursuant to Section 9.1, that such amendment does not adversely affect the validity, perfection or priority of the security interests granted or created hereunder. 
  
 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 Certificates theretofore or thereafter authenticated, executed on behalf of the Holders and delivered under the Purchase Contract Agreement shall be bound thereby. 
  

 -27- 

 SECTION 9.5 Reference to Amendments 
  
 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 as to any matter provided for in such amendment. If the Company shall so determine,
new Certificates so modified as to conform, in the opinion of 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 Certificates. 
  
 ARTICLE X 
  
 MISCELLANEOUS 
  
 SECTION 10.1 No Waiver 
  
 No failure on the part of any party hereto 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 any party hereto 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 Securities Intermediary, the Collateral Agent, the Custodial 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, which law, for purposes of the Code, shall be deemed to be the law governing all Security Entitlements related thereto. In addition,
such parties agree that, for purposes of the Code, New York shall be the Securities Intermediary’s jurisdiction. The Company, the Collateral Agent and the Holders from time to time of the Units, 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 the Borough of Manhattan 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 Units, 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 

  

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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 
  
 Unless otherwise stated herein, all notices, requests, instructions, 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, as to any party, at such other address as shall be designated by such party in a notice to the other parties. Except as otherwise provided in
this Agreement, all such communications shall be deemed to have been duly given when personally delivered or, in the case of a mailed notice or notice transmitted by telecopier, upon receipt, in each case given or addressed as aforesaid. 

 
 SECTION 10.4 Successors and Assigns 
  
 This Agreement shall be binding upon and inure to the benefit of the
respective successors and assigns of the Company, the Collateral Agent, the Custodial Agent, the Securities Intermediary and the Purchase Contract Agent, and the Holders from time to time of the Units, 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, the Securities
Intermediary and the Custodial Agent for: 
  
 (a) all reasonable
out-of-pocket costs and all reasonable expenses of the Collateral Agent, the Custodial Agent and the Securities Intermediary (including, without limitation, the reasonable fees and expenses of counsel to the Collateral Agent, the Custodial Agent and
the Securities Intermediary), 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; 
  

 -29- 

 (b) all reasonable costs and expenses of the Collateral Agent, the Custodial Agent and the Securities
Intermediary (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 Units to satisfy its obligations under the
Purchase Contracts forming a part of the Units 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, if any, incurred in connection with any filing, registration, recording or perfection of any security interest to the extent
contemplated hereby. 
  
 SECTION 10.8 Security Interest Absolute

  
 All rights of the Collateral Agent and security interests
hereunder, and all obligations of the Holders from time to time hereunder, shall be absolute and unconditional irrespective of: 
  
 (a) any lack of validity or enforceability of any provision of the Purchase Contracts or the Units 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 Units 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.

  

 -30- 

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

			
	 UNUMPROVIDENT CORPORATION

		
	By:	 	 /s/ Susan N. Roth

	 	 	

	 	 	Name: Susan N. Roth
	 	 	Title:   Vice President and Corporate Secretary
	 
	 Address for Notices:

	 
	 UnumProvident Corporation

	 1 Fountain Square

	 Chattanooga, Tennessee 37402

			
	 Attention:
	 	Susan N. Roth, Vice President and
	 	 	Corporate Secretary
	 Telecopy:
	 	(423) 755-2590
	 Telephone:
	 	(423) 755-8913
	 	 	 
	 JPMorgan Chase Bank,
 as Purchase Contract Agent and as attorney-in-fact of the Holders from time to time of the Units

			
		
	By:	 	 /s/ James D. Heaney

	 	 	

	 	 	Name: James D. Heaney
	 	 	Title: Vice President
	
	 Address for Notices:

	
	JPMorgan Chase Bank
	4 New York Plaza, 15th Floor
	New York. New York 10004
	Attention: Institutional Trust Services
	Telecopy: (212) 623-6167
	Telephone: (212) 623-6747

  

			
	 BNY Midwest Trust Company,

	 as Collateral Agent, Custodial Agent

	 and Securities Intermediary

		
	By:	 	 /s/ D.G. Donovan

	 	 	

	 	 	Name: D.G. Donovan
	 	 	Title: Vice President
	 	 	 
	 Address for Notices:

	 
	BNY Midwest Trust Company
	2 N. LaSalle Street
	Suite 1020
	Chicago, Illinois 60602
	Attention: Corporate Trust Administration
	Telecopy: (312) 827-8547
	Telephone: (312) 827-8542

  

 EXHIBIT A 
  

INSTRUCTION FROM PURCHASE CONTRACT 
 AGENT TO COLLATERAL AGENT 
  
 BNY Midwest Trust Company

 2 North LaSalle Street 
 Suite 1020 
 Chicago, Illinois 60602 
  
 Attention: Corporate Trust Administration 
  

			
	 Re:
	  	8.25% Adjustable Conversion-Rate Equity
	 	  	Security Units of UnumProvident Corporation (the “Company”)

  
 We hereby notify you
in accordance with Section [4.1][4.2] of the Pledge Agreement, dated as of May 11, 2004, among the Company, you, as Collateral Agent, Custodial Agent and Securities Intermediary, and us, as Purchase Contract Agent and as attorney-in-fact for the
holders of [Normal Units] [Stripped Units] from time to time, that the holder of securities listed below (the “Holder”) has elected to substitute [$              aggregate
principal amount of Treasury Securities (CUSIP No. [                    ])]
[$             principal amount of Notes or the appropriate Treasury Consideration, as the case may be,] in exchange for the related [Pledged Notes or Pledged Treasury Consideration]
[Pledged Treasury Securities (CUSIP No. [            ]),] held by you in accordance with the Pledge Agreement and has delivered to us a notice stating that the Holder has transferred
[Treasury Securities] [Notes or the appropriate Treasury Consideration] to you, as Collateral Agent. We hereby instruct you, upon receipt of such [Pledged Treasury Securities] [Pledged Notes or Pledged Treasury Consideration], and upon the payment
by such Holder of any applicable fees, to release the [Notes or Treasury Consideration, as the case may be,] [Treasury Securities] related to such [Normal Units] [Stripped Units] to us in accordance with the Holder’s instructions. Capitalized
terms used herein but not defined shall have the meaning set forth in the Purchase Contract Agreement. 
  
 Date:                                  

  

			
	 JPMorgan Chase Bank,

	 
	As Purchase Contract Agent under the Purchase
	Contract Agreement, dated as of May 11, 2004,
	 between the Company and the Purchase Contract
 Agent

		
	By:	 	 
	 	 	

	 	 	Name:
	 	 	Title:

  

 A-1 

 Please print name and address of Registered Holder electing to substitute [Treasury Securities] [Notes or Treasury
Consideration] for the [Pledged Notes or the Pledged Treasury Consideration] [Pledged Treasury Securities]: 
  

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

  

 A-2 

 EXHIBIT B 
  

INSTRUCTION TO PURCHASE CONTRACT AGENT 
  
 JPMorgan Chase Bank, 
     as Purchase Contract Agent

 4 New York Plaza 
 New York, New York 10004 
  
 Attention: Institutional Trust Services 
  

			
	 Re:
	  	8.25% Adjustable Conversion-Rate Equity
	 	  	Security Units of UnumProvident Corporation (the “Company”)

  
 The undersigned Holder
hereby notifies you, as Purchase Contract Agent under the Purchase Contract Agreement, dated as of May 11, 2004, between the Company and you, that it has delivered to BNY Midwest Trust Company, as Collateral Agent, Custodial Agent and Securities
Intermediary [$             aggregate principal amount of Treasury Securities] [$             principal amount of
Notes or the appropriate Treasury Consideration, as the case may be,] in exchange for the related [Pledged Notes or Pledged Treasury Consideration, 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 11, 2004, among you, the Company and the Collateral Agent. The undersigned Holder has paid the Collateral Agent all applicable fees relating to such exchange. The undersigned Holder hereby
instructs you to instruct the Collateral Agent to release to you on behalf of the undersigned Holder the [Pledged Notes or Pledged Treasury Consideration, as the case may be,] [Pledged Treasury Securities] related to such [Normal Units] [Stripped
Units]. Capitalized terms used herein but not defined shall have the meaning set forth in the Pledge Agreement. 
  
 Date:                      

			
		
	By:	 	 
	 	 	

			
	 Signature Guarantee:
	 	 
	 	 	

  
 Dated: 
  

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

  

 B-1 

 EXHIBIT C 
  

INSTRUCTION TO CUSTODIAL AGENT REGARDING REMARKETING 
  
 BNY Midwest Trust Company 
 2 N. LaSalle Street 
 Suite 1020 
 Chicago, Illinois 60602 
  
 Attention: Corporate Trust Administration 
  

			
	 Re:
	  	Notes of UnumProvident Corporation

  
 The undersigned hereby
notifies you in accordance with Section 4.5(d) of the Pledge Agreement, dated as of May 11, 2004 (the “Pledge Agreement”), among UnumProvident Corporation, yourselves, as Collateral Agent, Securities Intermediary and Custodial Agent, and
JPMorgan Chase Bank, as Purchase Contract Agent and as attorney-in-fact for the Holders of Normal Units and Stripped Units from time to time, that the undersigned elects to deliver on the fourth Business Day immediately preceding the first day of
the Remarketing Period commencing on             , 2007 $             aggregate principal amount of Notes for
delivery to the Remarketing Agent for remarketing pursuant to Section 4.5(d) 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 Notes tendered hereby. 
  
 The undersigned hereby instructs you, upon receipt of the proceeds of such remarketing from the Remarketing Agent, net of amounts payable to the
Remarketing Agent in accordance with the Pledge Agreement, 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 [a/the Last] Failed Remarketing upon receipt of the Notes tendered herewith from the Remarketing Agent, to deliver such Notes 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 Notes tendered hereby and that the undersigned is the record owner of any Notes tendered herewith in physical form or a participant in The Depository Trust Company
(“DTC”) and the beneficial owner of any Notes tendered herewith by book-entry transfer to your account at DTC and (ii) agrees to be bound by the terms and conditions of Section 4.5(d) of the Pledge Agreement. Capitalized terms used herein
but not defined shall have the meaning set forth in the Pledge Agreement. 
  

 C-1 

			
	 Date:
	 	 
	 	 	

  

			
	 Signature:
	 	 
	 	 	

	
	 Signature Guarantee:

  

			
	 Name:
	 	 
	 	 	

	 	 	 (Please Print)

		
	 Address:
	 	 
	 	 	

	 	 	 (Please Print)

  
 Country: 
  
 Zip Code: 
  
 Telecopy (include country code if outside U.S.): 
  
 Telephone (include country code if outside U.S.): 
  
 (Tax Identification or Social Security Number): 
  
 A. PAYMENT INSTRUCTIONS 
  
 Proceeds of the remarketing should be paid by check in the name of the person(s) set forth below and mailed to the address set forth below. 
  

			
	 Name(s):
	 	 
	 	 	

	 	 	 (Please Print)

		
	 Address:
	 	 
	 	 	

	 	 	 (Please Print)

  
 Zip Code: 
  
 Country: 
  
 Telecopy (include country code if outside U.S.): 
  
 Telephone (include country code if outside U.S.): 
  
 (Tax Identification or Social Security Number): 
  

 C-2 

 B. DELIVERY INSTRUCTIONS 
  

In the event of [a/the Last] Failed Remarketing, Notes which are in physical form should be delivered to the person(s) set forth below and mailed to the address set
forth below. 
  

			
	 Name(s):
	 	 
	 	 	

	 	 	 (Please Print)

		
	 Address:
	 	 
	 	 	

	 	 	 (Please Print)

  
 Zip Code: 
  
 Country: 
  
 Telecopy (include country code if outside U.S.): 
  
 Telephone (include country code if outside U.S.): 
  
 (Tax Identification or Social Security Number): 
  
 In the event of [a/the Last] Failed Remarketing, Notes which are in book-entry form should be credited to the account at The Depository Trust Company set forth below.

  

			
	 Name of Account Party:
	  	DTC Account Number:

  

 C-3 

 EXHIBIT D 
  

INSTRUCTION TO CUSTODIAL AGENT REGARDING 
 WITHDRAWAL FROM REMARKETING 
  
 BNY Midwest Trust Company

 2 N. LaSalle Street 
 Suite 1020 
 Chicago, Illinois 60602 
  
 Attention: Corporate Trust Administration 
  

	 	Re:	Notes of UnumProvident Corporation  

  
 The undersigned hereby notifies you in accordance with Section 4.5(d) of the Pledge Agreement, dated as of May 11, 2004 (the “Pledge
Agreement”), among UnumProvident Corporation, yourselves, as Collateral Agent, Securities Intermediary and Custodial Agent, and JPMorgan Chase Bank, as Purchase Contract Agent and as attorney-in-fact for the Holders of Normal Units and Stripped
Units from time to time, that the undersigned elects to withdraw the $             aggregate principal amount of Notes delivered to the Custodial Agent on
                    , 2007 for remarketing pursuant to Section 4.5(d) of the Pledge Agreement. The undersigned hereby instructs you to return
such Notes 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 4.5(d) of the Pledge Agreement. Capitalized terms used herein
but not defined shall have the meaning set forth in the Pledge Agreement. 
  

									
	 Date:
                    
	 	 	 	 	 	 
					
	 	 	 	 	 	 	Signature:	 	 
	 	 	 	 	 	 	 	 	

	 	 	 	 	 	 	Signature Guarantee:	 	 
	 Name(s):
	 	 	 	 	 	 	 	 
	 	 	
	 	 	 	 	 	 
	 	 	 (Please Print)
	 	 	 	 	 	 
	 Address:
	 	 	 	 	 	 	 	 
	 	 	
	 	 	 	 	 	 
	 	 	 (Please Print)
	 	 	 	 	 	 

  
 Zip Code: 
  
 Country: 
  
 Telecopy (include country code if outside U.S.): 
  
 Telephone (include country code if outside U.S.): 
  
 (Tax Identification or Social Security Number): 
  

 D-1 

 A. DELIVERY INSTRUCTIONS 
  

Notes which are in physical form should be delivered to the person(s) set forth below and mailed to the address set forth below. 
  

			
		
	Name(s):	 	 
	 	 	

	 	 	 (Please Print)

		
	Address:	 	 
	 	 	

	 	 	 (Please Print)

  
 Zip Code: 
  
 Country: 
  
 Telecopy (include country code if outside U.S.): 
  
 Telephone (include country code if outside U.S.): 
  
 (Tax Identification or Social Security Number): 
  
 Notes which are in book-entry form should be credited to the account at The Depository Trust Company set forth below. 
  

									
	Name of Account Party:	 	 	 	 	 	DTC Account Number:	 	 

  

 D-2

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